CN105572787B - Light guide plate, backlight module and display including the light guide plate - Google Patents
Light guide plate, backlight module and display including the light guide plate Download PDFInfo
- Publication number
- CN105572787B CN105572787B CN201510506647.6A CN201510506647A CN105572787B CN 105572787 B CN105572787 B CN 105572787B CN 201510506647 A CN201510506647 A CN 201510506647A CN 105572787 B CN105572787 B CN 105572787B
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- China
- Prior art keywords
- light
- reflecting surface
- guide plate
- sunk area
- light guide
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—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
- G02B6/0033—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
- G02B6/0013—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
- G02B6/0035—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
- G02B6/0023—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
Abstract
Backlight module and display the present invention relates to light guide plate, including the light guide plate.According to an aspect of the present invention, the present invention provides a kind of light guide plate comprising: light-emitting surface is used for outside output light；Reflecting surface is located at the back side of the light-emitting surface；Incidence surface is located at least one side in the side for connecting the light-emitting surface and reflecting surface and receives by light source irradiation and the light of incidence；And reflective graphics, have to the positive quarter portion of the outer projection of the reflecting surface and around the portion of positive quarter and toward the ring-type negative quarter portion of the inner recess of the reflecting surface, the sun quarter portion has sunk area.
Description
Technical field
Backlight module and display the present invention relates to light guide plate, including the light guide plate.More specifically it relates to
The light guide plate that light diffusance is improved, backlight module and display including the light guide plate.
Background technique
Backlight module (BLU:Back Light Unit) refers to the screen rear positioned at liquid crystal display and for providing
One kind of the light supply apparatus of light can not only directly affect the figure such as brightness, color reproduction, visual angle, contrast, readability of image
Image quality amount and consumption electricity, life of product etc., and its price also accounts for about the 20~50% of the total unit price of liquid crystal display, therefore belongs to
In 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 for being located at screen dead astern to project to liquid crystal display panel, and side-light backlight
Mould group be from the light at the light source for being located at screen edge to side project light and light guide plate guide the light into liquid crystal display panel and
Light is provided to the panel of display.Due to there are these structural differences, brightness, contrast, the uniformity of picture,
Image reproducing etc. down straight aphototropism mode set can advantageously, and product thickness or in terms of side-light type then more have it is excellent
Gesture.
Recently, outstanding day by day as the value of interior decoration article due to display product, in product in display industry
The proportion of the sidelight type backlight module with greater advantages is increasing in appearance.In particular, as consumer is to ultrathin type
The demand of display product increasingly increases, and in order to closely follow the paces of this trend, actively research to reduce display to the maximum extent
About 3~5 diffusion sheets that panel rear is loaded with, however there may be following problems for such display product, such as by
Hot spot is aggravated in not can guarantee the light diffusance being responsible for originally by diffusion sheet.Therefore, what exploitation light diffusance was improved leads
The technology of tabula rasa is increasingly becoming core technology.
Summary of the invention
Technical problem
A technical problem of the invention is, provides a kind of light guide plate that smooth diffusance is improved, its backlight module
And display.
Another technical problem of the invention is, provides a kind of light guide plate that hot spot is inhibited, its backlight module and aobvious
Show device.
Technical solution
According to one embodiment of present invention, the present invention provides a kind of light guide plate comprising: light-emitting surface is used for outward
Output light；Reflecting surface is located at the back side of the light-emitting surface；Incidence surface is located at and connects the light-emitting surface and reflecting surface
On at least one side in side and receive by light source irradiation and the light of incidence；And reflective graphics, have to the reflection
The positive quarter portion of the outer projection in face and the ring-type negative quarter portion for surrounding the portion of positive quarter and the inner recess of the past reflecting surface,
In, the sun quarter portion has sunk area.
In addition, according to another embodiment of the invention, the present invention provides a kind of backlight module, which includes using
In the light source and light guide plate of irradiation light.Wherein, the light guide plate has incidence surface, light-emitting surface, reflecting surface and reflective graphics, wherein
The incidence surface and the light source opposite thirty years of age and the wherein incident light irradiated by light source, the light-emitting surface perpendicular to it is described enter light
Face and incident light can be exported outward, the reflecting surface is located at the back side of the light-emitting surface, and has on the reflecting surface
Reflective graphics.In addition, the reflective graphics include, from the reflecting surface protrusion when side vertical from the reflecting surface looks up
Inner-concave circle positive quarter portion and surround the portion of positive quarter and the past reflecting surface when looking up from the vertical side of the reflecting surface
Sunken ring-type negative quarter portion.In addition, the sun quarter portion has sunk area.
Beneficial effect
According to the present invention, scatter light according to recessed portion, to improve the nephelometric turbidity unit of the light exported by light guide plate
Or diffusance.
In addition, according to the present invention, due to the light guide plate being improved using light nephelometric turbidity unit, so as to improve hot spot.
Detailed description of the invention
Fig. 1 is the exploded perspective view according to the display of the embodiment of the present invention.
Fig. 2 is the sectional view according to the display of the embodiment of the present invention.
Fig. 3 is the oblique view according to the light guide plate of the embodiment of the present invention.
Fig. 4 is the back view according to the light guide plate of the even density of the reflective graphics of the embodiment of the present invention.
Fig. 5 is the back view according to the light guide plate of the Density inhomogeneity of the reflective graphics of the embodiment of the present invention.
Fig. 6 is the sectional view according to the light guide plate of the embodiment of the present invention.
Fig. 7 is the oblique view according to the light guide plate for having figure on incidence surface of the embodiment of the present invention.
Fig. 8 is the oblique view according to the light guide plate for having figure on light-emitting surface of the embodiment of the present invention.
Fig. 9 is the oblique view according to the first embodiment of the reflective graphics of the embodiment of the present invention.
Figure 10 is the plan view according to the first embodiment of the reflective graphics of the embodiment of the present invention.
Figure 11 is the sectional view according to the first embodiment of the reflective graphics of the embodiment of the present invention.
Figure 12 is the oblique view according to the second embodiment of the reflective graphics of the embodiment of the present invention.
Figure 13 is the plan view according to the second embodiment of the reflective graphics of the embodiment of the present invention.
Figure 14 is the sectional view according to the second embodiment of the reflective graphics of the embodiment of the present invention.
Figure 15 is the sectional view according to the light guide plate with asymmetrical reflective graphics of the embodiment of the present invention.
Figure 16 is the oblique view according to the 3rd embodiment of the reflective graphics of the embodiment of the present invention.
Figure 17 is the plan view according to the 3rd embodiment of the reflective graphics of the embodiment of the present invention.
Figure 18 is the sectional view according to the 3rd embodiment of the reflective graphics of the embodiment of the present invention.
Figure 19 is the oblique view according to the fourth embodiment of the reflective graphics of the embodiment of the present invention.
Figure 20 is the plan view according to the fourth embodiment of the reflective graphics of the embodiment of the present invention.
Figure 21 is the sectional view according to the fourth embodiment of the reflective graphics of the embodiment of the present invention.
[explanation of reference numeral]
1000: display
1200: shell
1400: display panel
1600: backlight module
2000: light guide plate
2200: reflective graphics
2220: positive quarter portion
2222: sunk area
2240: negative quarter portion
2260: outer part.
Specific embodiment
In the following, the light guide plate of one embodiment of the present of invention will be explained in conjunction with attached drawing in detail, including the back of the light guide plate
Optical mode group and display.
In addition, being that will give the same or similar reference to identical or corresponding composition important document regardless of reference numeral
Symbol simultaneously omits repeated explanation to this, for purposes of illustration only, the size and shape of each shown building block can be amplified or
It reduces.
In one aspect of the invention, the present invention provides a kind of light guide plate comprising: light-emitting surface is used for outside output light
Line；Reflecting surface is located at the back side of the light-emitting surface；Incidence surface is located in the side for connecting the light-emitting surface and reflecting surface
At least one side on and receive by light source irradiation and incidence light；And reflective graphics, have to the outer of the reflecting surface
The positive quarter portion of portion's protrusion and the ring-type negative quarter portion for surrounding the portion of positive quarter and the inner recess of the past reflecting surface.Wherein, described
Positive quarter portion has sunk area.
In addition, in the sunk area, be parallel to length ratio on the direction of the incidence surface perpendicular to it is described enter light
Length on the direction in face can be longer.
In addition, in the sunk area, be parallel to length ratio on the direction of the incidence surface perpendicular to it is described enter light
Length on the direction in face can be shorter.
In addition, when looking up from the side perpendicular to the reflecting surface, the sunk area can be for long axis and short
The shape of axis.
In addition, the sunk area is essentially elliptical shape when looking up from the side perpendicular to the reflecting surface.
In addition, the long axis of the sunk area can be by described when looking up from the side perpendicular to the reflecting surface
The center in positive quarter portion.
In addition, the long axis of the sunk area can be with the sun when looking up from the side perpendicular to the reflecting surface
Quarter portion center predetermined distance.
In addition, being based on the sunk area on section vertical with the long axis of the reflecting surface and sunk area respectively
The positive quarter portion side height of projection and the height of projection of its other side can not be identical.
In addition, the long axis of the sunk area can be parallel to incidence surface, and the higher side of the height of projection and institute
It is close to state incidence surface.
In addition, the long axis of the sunk area can be perpendicular to the incidence surface.
In addition, the minimum point of the sunk area is in position more higher than the reflecting surface.
In addition, the sunk area substantially can be circular shape when looking up from the side perpendicular to reflecting surface.
In addition, the reflective graphics can have the annular shape around portion of negative quarter when the side perpendicular to reflecting surface looks up
Shape, and may further include the outer part from reflecting surface outwardly convex.
In addition, in another aspect of this invention, the present invention provides a kind of backlight module, which includes for irradiating
The light source and light guide plate of light.Wherein, the light guide plate has incidence surface, light-emitting surface, reflecting surface and reflective graphics, wherein it is described enter
Smooth surface and the light source opposite thirty years of age and the wherein incident light irradiated by light source, the light-emitting surface is perpendicular to the incidence surface and energy
Incident light is exported outward, the reflecting surface is located at the back side of the light-emitting surface, and has reflectogram on the reflecting surface
Shape.In addition, the reflective graphics include, the side vertical from reflecting surface circle raised from the reflecting surface when looking up
Positive quarter portion is with the portion of positive quarter circular when looking up from the vertical side of the reflecting surface simultaneously toward the inner recess of the reflecting surface
Annular yin quarter portion.In addition, the sun quarter portion has sunk area.
In addition, in the sunk area, be parallel to length ratio on the direction of the incidence surface perpendicular to it is described enter light
Length on the direction in face can be longer.
In addition, in the sunk area, be parallel to length ratio on the direction of the incidence surface perpendicular to it is described enter light
Length on the direction in face can be shorter.
In addition, the sunk area can be for long axis and short axle when looking up from the side perpendicular to the reflecting surface
Elliptical shape.
In addition, being based on the sunk area on section vertical with the long axis of the reflecting surface and sunk area respectively
The positive quarter portion side height of projection and the height of projection of its other side can not be identical.
In addition, the long axis of the sunk area can be parallel to incidence surface and the higher side of the height of projection with it is described
Incidence surface is close.
In addition, the minimum point of the sunk area is in position more higher than the reflecting surface.
Specific embodiment mode
In the following, will illustrate display according to an embodiment of the present invention (1000).Wherein, the display (1000) refers to,
Including the various displays (1000) that can export image such as LCD display, PDP display, OLED display it is all general
It reads, should be made explanations with generalized way.However, for convenient for following explanation, mainly centered on liquid crystal display (1000) into
The following explanation of row.
Fig. 1 is according to the exploded perspective view of the display (1000) of the embodiment of the present invention, and Fig. 2 is according to the embodiment of the present invention
Display (1000) sectional view.
As illustrated in fig. 1 and 2, display (1000) may include shell (1200), display panel (1400) and backlight module
(1600).
Shell (1200) is to make display surface and accommodating display panel (1400) and backlight module (1600) inside it
Plate (1400) and backlight module (1600) are from external impact.In addition, shell (1200) have can allow display panel (1400) and
The function that backlight module (1600) is integrated.
Shell (1200) may include (1220) at the top of box, guide frame (1240) and base portion (1260).At the top of box
(1220) it combines with base portion (1260) to be covered each by the front and back of display (1000), guide frame (1240) is then pacified
Loaded between the two.This guide frame (1240) fixed display panel (1400) together with the frame of (1220) at the top of box, also
With base portion (1260) lightguide plate fixing (2000) and otpical leaf (1620) together.
Display panel (1400) is by showing image using the light provided by backlight module (1600).
Display panel (1400) may include two transparent substrates and the liquid crystal layer between two transparent substrates
(1420).Wherein, transparent substrate can be respectively color filter (1460) and thin film transistor (TFT) (TFT) (1440).When passing through
The grid line (gate line) and data line (data line) of thin film transistor (TFT) (1440) apply electric signal to liquid crystal layer (1420)
When, liquid crystal arrangement can change, so that allow backlight module (1600) to project light with selecting pool property as unit of pixel is worn
It crosses, those light penetrated catch color by color filter (1460), to export image.Wherein, thin film transistor (TFT)
(1440) printed circuit board (PCB, not shown) and flip chip (COF:Chip On Film) or thin-film package can be passed through
Panel drivings portions (not shown) such as (TCP:Tape Carrier Package) is electrically coupled, to receive control signal.
Backlight module (1600) can provide light to the rear of display panel (1400) and display panel (1400) is allowed to export
Image.
Backlight module (1600) may include optical thin film (1620), array of source (1640), light guide plate (2000) and anti-
Penetrate plate (1680).
Array of source (1640) may include the light source substrate for luminous light source (1642) and setting light source (1642)
(1644).As light source (1642), cold-cathode fluorescence lamp (CCFL:Cold Cathode Fluorescent can be used
Lamp), external electrode fluorescent lamp (EEFL:External Electrode Fluorescent Lamp) or light emitting diode
(LED:Light Emitting Diode) etc..When the array of source (1640) are sidelight type backlight module (1600),
The edge of display (1000) is arranged array of source (1640) and makes light source (1642) towards side, so that light can be from light guide plate
(2000) side is incident.When the array of source (1640) are down straight aphototropism mode set (1600), by array of source
(1640) base portion (1260) are located at, so that light source (1642) is towards display panel (1400) rear output light.At this point, can incite somebody to action
Light source substrate (1644) is set to base portion (1260), or can be omitted light source substrate (1644) and be directly arranged in light source (1642)
In base portion (1260).
Light guide plate (2000) is set in opposite directions in the backlight module (1600), with the rear of display panel (1400).It is described to lead
The light directing display panel (1400) that tabula rasa (2000) can will be exported from light source (1642) to side.In addition, in light guide plate
(2000) side of above and below and light source (1642) is respectively formed figure, to improve the uniformity of light, such as improves brightness or changes
Kind hot spot etc..PMMA material (PMMA:Poly Methly can be used in material as light guide plate (2000)
Methacrylate) or MS, MMA, or using glass etc. material.It can illustrate light guide plate in more detail below
(2000).In addition, the diffuser plate of diffusing light can be equipped with when as utilized down straight aphototropism mode set (1600) to replace for leaded light
Light guide plate (2000).
Optical thin film (1620) is set to the rear of display panel (1400) and opposite with display panel (1400) and set, when matching
When standby light guide plate (2000), optical thin film (1620) can be set between display panel (1400) and light guide plate (2000).Light
The example for learning film (1620) has, diffusion sheet (1624) or prismatic lens (1622).Diffusion sheet (1624) can allow from light guide plate
(2000) or in diffuser plate the light exported is uniformly spread, to improve the uniformity of light output distribution, and can be alleviated or be prevented
The generation of light and shade (dark/bright) pattern or hot spot as moir (Moire) phenomenon.Prismatic lens (1622) can be by light
Path is adjusted to the direction perpendicular to display panel (1400).It can be to by the light of light guide plate (2000) or diffusion sheet (1624)
Front dispersion is projected, and prismatic lens (1622) can make the light of these dispersions towards display panel (1400) vertical output, to mention
The brightness of high display (1000) and visual angle.It, as illustrated in fig. 1 and 2, can as optical thin film (1620) according to one embodiment
With from display panel (1400) mutually nearby one by one place vertical prism sheets (1622a), horizon prism piece (1622b) and diffusion
Piece (1624).However, the sequence of putting of these optical thin films (1620) is not limited only to this.In other words, optical thin film (1620)
In part can be omitted or part by the form of multiple arrange (e.g., settable two or two or more diffusion sheets
(1624)) or changed, and suitably as needed.
Reflecting plate (1680) Pasting is in base portion (1260).The reflecting plate (1680) can be anti-to display panel (1400)
Penetrate the light projected backward in the light that those light sources (1642) are exported.The reflecting plate (1680) can improve on the whole leads
The display brightness of tabula rasa (2000) and diffuser plate.
In the following, more in detail light guide plate according to an embodiment of the present invention (2000) will be explained.
Fig. 3 is according to the oblique view of the light guide plate (2000) of the embodiment of the present invention, and Fig. 4 is the tool according to the embodiment of the present invention
There is the back view of the light guide plate (2000) of uniform reflective graphics (2200) density, Fig. 5 is having according to the embodiment of the present invention
The back view of the light guide plate (2000) of non-uniform reflective graphics (2200) density, Fig. 6 are the leaded light according to the embodiment of the present invention
The sectional view of plate (2000), Fig. 7 are the light guide plate (2000) for having figure on incidence surface (2060) according to the embodiment of the present invention
Oblique view, and Fig. 8 is the strabismus according to the light guide plate (2000) for having figure on light-emitting surface (2020) of the embodiment of the present invention
Figure.
As shown in Fig. 3~8, plate light guide plate (2000) can be provided.At this point, light guide plate (2000) have a pair of of cylinder and
Connect the side of the two cylinders.In a pair of of cylinder, with similar in display panel (1400) above for display panel
(1400) light-emitting surface (2020) of output light, the back side are the reflecting surface (2040) for reflected light.In addition, in side
At least one side will be set in opposite directions with light source (1642), and become the incidence surface (2060) for receiving incident light.In general, display
(1000) there is cubic shaped screen, therefore light guide plate (2000) also correspondingly has square plate structure.Such as light guide plate
(2000) when being square plate structure, any surface in four sides or from opposite up and down and a pair of of side for setting or from
A pair of of side that left and right is opposite and sets can become incidence surface (2060).In addition, in Fig. 3, although light guide plate (2000) is illustrated
For the plate that thickness is unified, but it should not be limited only to this.It can be taken to improve into light rate in leaded light according to one embodiment
The adjacent domain of side opposite with light source (1642) and setting has thicker shape than other regions in plate (2000).
The light guide plate (2000) receives the light projected by light source (1642) by incidence surface (2060), then in light guide plate
(2000) leaded light is carried out in, then exports these light in the form of area source (1642) by light-emitting surface (2020).Reflecting surface
(2040) can play the role of reflecting the light leaked from light guide plate (2000) back side to light-emitting surface (2020).In incidence surface
(2060), figure can be respectively formed on light-emitting surface (2020) and reflecting surface (2040), be used to be effectively performed into light, go out light and
Reflected light.In particular, reflective graphics (2200) can be formed on reflecting surface (2040), carried on the back with being used to reflect from light guide plate (2000)
Face, i.e., the light leaked from reflecting surface (2040).
Multiple reflective graphics (2200) can be formed on reflecting surface (2040).At this point, as shown in figure 4, in reflecting surface
(2040) reflective graphics (2200) of even density can be formed on, or as shown in figure 5, can form the reflection of Density inhomogeneity
Figure (2200).In particular, when being applied to large screen, with the closer region of incidence surface (2060) of light guide plate (2000) and farther out
Region luminance difference may occur.Therefore, compared with from incidence surface (2060) closer region, in farther away region therewith
Denser reflective graphics (2200) are formed, to reduce the luminance difference.Wherein, the density of reflective graphics (2200) is
Refer to, according to coverage rate shared by reflective graphics (2200) in reflecting surface (2040), the size of reflective graphics (2200), reflective graphics
(2200) spacing etc. is come the definition made.
The reflective graphics (2200) can be by utilizing stencil, print process or laser-etching process, sedimentation, compacting
(pressing) method, roller punching press (roll stamping) method etc. are formed.By these techniques, reflective graphics (2200) can shape
As specific shape, released with that effectively can reflect to light-emitting surface (2020) or reflect those from light guide plate (2000) back side
Light.In aftermentioned, reflective graphics (2200) will be explained in greater detail.
In addition, zigzag pattern (2400) are formed on the incidence surface (2060) of light guide plate (2000), to improve from light source
(1642) the light distribution angle and enhanced diffustion effect of incident light.As shown in fig. 7, zigzag pattern (2400) mainly from
Positive quarter portion and negative quarter the portion repeated arrangement on the width direction along incidence surface (2060) that upper and lower direction extends out, and shape
At on incidence surface (2060).In addition, light guiding graphics (2600) can be formed on the light-emitting surface (2020) of light guide plate (2000),
With will be in all areas by the incident light directing light guide plate (2000) of incidence surface (2060).Light guiding graphics (2600) repeat
It is formed on light-emitting surface (2020) and makes it to be extended perpendicular to incidence surface (2060).As shown in figure 8, light guiding graphics
(2600) it can be convex-concave pattern, or be formed the form of triangle or square prism patterns.
Light guide plate (2000) may include above-mentioned zigzag pattern (2400) or light guiding graphics (2600) and reflective graphics
(2200).As needed, can be formed simultaneously on light guide plate (2000) zigzag pattern (2400), light guiding graphics (2600) and
Reflective graphics (2200).
In the following, will illustrate reflective graphics according to an embodiment of the present invention (2200).
Reflective graphics (2200) can be formed as specific shape according to raised or sunken on reflecting surface (2040), so as to
Reflect those light for being intended to leak from light guide plate (2000) back side.Such reflected light as a result, due to passing through light guide plate
(2000) amount of the light of light-emitting surface (2020) output has increase, to improve the brightness of display (1000).
In the present invention, the reflective graphics (2200) with site graphic form can be substantially provided.From with reflecting surface
(2040) when vertical side looks up, reflective graphics (2200) are can have on reflecting surface (2040) on the whole with round convex
The position risen and the position for surrounding the region and being recessed.
Reflective graphics (2200) are mainly formed by roller pressing or pressing.Specifically, depressed area is by roller
Punching press or pressing cut out reflecting surface (2040) and are formed, and boss is formed around the depressed area is pushed to.
At this point, passing through the roller pressing or pressing of hot pressing mode, patterning process can be effectively performed.
The reflective graphics (2200) can reflect on respective region, reflect or scatter those and enter from incidence surface (2060)
Penetrate and to reflecting surface (2040) project light or light-emitting surface (2020) reflect and to reflecting surface (2040) injection light
Line, so as to which the reflection of light is effectively performed.Specifically, reflective graphics (2200) can center positive quarter portion (2220) and
Change opticpath twice on the negative quarter portion (2240) on its periphery, to improve on the whole bright on light-emitting surface (2020)
Spend uniformity.
In the following, will illustrate the first embodiment in the various shape of reflective graphics according to an embodiment of the present invention (2200).
Fig. 9 is according to the oblique view of the first embodiment of the reflective graphics (2200) of the embodiment of the present invention, according to Figure 10
The plan view of the first embodiment of the reflective graphics (2200) of the embodiment of the present invention, and Figure 11 is according to the anti-of the embodiment of the present invention
Penetrate the sectional view of the first embodiment of figure (2200).
As shown in Fig. 9~11, the first kind of reflective graphics (2200) according to an embodiment of the present invention may include positive quarter
Portion (2220) and negative quarter portion (2240).
Positive quarter portion (2220) is located at the center of reflective graphics (2200), is than the basal plane outwardly convex of reflecting surface (2040)
Part.Wherein, the sunk area (2222) being recessed inward can be formed at the center of positive quarter portion (2220).
Positive quarter portion when looking up from the side vertical with reflecting surface (2040), in the first kind of reflective graphics (2200)
(2220) circular shape can be formed.In addition, its three-dimensional shape can be semi-spherical shape.Also that is, positive quarter portion (2220) can adopt
With following shape, i.e., when from its edge (boundary met with negative quarter portion (2240)), the heart is close thereto, height be will increase.
Sunk area (2222) can be formed at the center of the reflective graphics (2200).The sunk area (2222) be
The central part on the surface (2224) for the semi-spherical shape that height gradually increases in reflective graphics (2200) is recessed inward and is formed.
When looking up from the side vertical with reflecting surface (2040), the sunk area (2222) is formed as elliptical shape.So
And the sunk area (2222) is not that have to form elliptical shape, as long as the shape with long axis and short axle, not by spy
It does not limit.For example, sunk area (2222) is formed as the various of elliptical shape wrinkly or the shape with long hole etc.
Shape.In addition, the long axis of sunk area (2222) can pass through the center of positive quarter portion (2220).
In addition, from the boundary of sunk area (2222) towards the center of reflective graphics (2200) close to when, sunk area
(2222) depth can gradually increase.At this point, the minimum point of sunk area (2222) can be at the basal plane than reflecting surface (2040)
Higher position.In addition, sunk area (2222) central part can form flat plane.Negative quarter portion (2240) internal diameter (with
The connected boundary of positive quarter portion (2220)) there is the height equal with reflecting surface (2040) basal plane, and to one from the inner radius
Remoter from internal diameter within set a distance, depth also will increase, and be finally reached depth capacity, and after reaching depth capacity, with close
Outer diameter (boundary being connected with outer part (2260)), depth can gradually become shallower as, yin quarter portion (2240) and reflecting surface at outer diameter
(2040) basal plane height having the same.At this point, can be provided in place of reaching depth capacity identical flat with depth
Portion.In addition, the gradient of inner radius is bigger than the gradient at its outer diameter in negative quarter portion (2240).Implemented according to one
Example, when from section, negative quarter portion (2240) can form the curved surface of circular arc type, oval arc-shaped, parabolic type etc. and in reflecting surface
(2040) it is sunken inward on basal plane.Refraction is readily susceptible to the surface treated negative quarter portion (2240) of the curved surface, is dissipated
It penetrates, reflect incident light in wider range.
In the following, will illustrate the second embodiment in the various shape of reflective graphics according to an embodiment of the present invention (2200).
Figure 12 is according to the oblique view of the second embodiment of the reflective graphics (2200) of the embodiment of the present invention, according to Figure 13
The plan view of the second embodiment of the reflective graphics (2200) of the embodiment of the present invention, Figure 14 are the reflection according to the embodiment of the present invention
The sectional view of the second embodiment of figure (2200), and Figure 15 is to have asymmetrical reflective graphics according to the embodiment of the present invention
(2200) sectional view of light guide plate (2000).
As shown in Figure 12~14, the Second Type and first kind phase of reflective graphics (2200) according to an embodiment of the present invention
It seemingly, may include portion of middle heart-yang quarter (2220) and negative quarter portion (2240).However, in the first kind, positive quarter portion (2220) can be with
It is symmetrical and formed centered on sunk area (2222), and the positive quarter portion (2220) of Second Type is to sunk area (2222) right and wrong
It is symmetrically formed.The shape of negative quarter portion (2240) in the reflective graphics (2200) of Second Type on the whole can be with reflectogram
The shape of negative quarter portion (2240) in the first kind of shape (2200) is similar, thus omits the explanation to this herein.
In the Second Type of reflective graphics (2200), positive quarter portion (2220) can be non-right for sunk area (2222)
Claim to be formed, as it can be seen that its height highest in one direction as shown in Figure 12~14 and on section, with highly gradually dropping
Low, its height is minimum in the opposite direction.At this point, the region with relatively high height can become the first elevated regions
(2224a), and the region with relatively low height becomes the second elevated regions (2224b).From the first elevated regions (2224a)
When gradually moving towards the second elevated regions (2224b), height can be gradually decreased, and in the height of the second elevated regions (2224b)
Become minimum.Moreover, between the part that sunk area (2222) and negative quarter portion (2240) are met in the first elevated regions (2224a)
Spacing away from the part met with the sunk area (2222) in the second elevated regions (2224b) and negative quarter portion (2240) can phase
Deng.
The shape of the Second Type of the reflective graphics (2200) is asymmetry, so that its optical characteristics does not have respectively
To the same sex, there is anisotropy instead.Specifically, the first elevated regions (2224a) have more than the second elevated regions (2224b)
Strong light scattering effect.In addition, the second elevated regions (2224b) provide visual angle more better than the first elevated regions (2224a).Cause
This can improve brightness uniformity or the visual angle of display (1000) by utilizing anisotropic optical characteristics.
In addition, as shown in figure 15, multiple reflective graphics (2200) can be formed on reflecting surface (2040).In reflective graphics
(2200) in Second Type, the first elevated regions (2224a) can be formed on incidence surface (2060).Therefore, anti-at one
It penetrates in figure (2200), remoter from incidence surface (2060), the height of elevated regions (2224) is lower.
Direction of the side of the high positive quarter portion (2220) of height towards close incidence surface (2060) in reflective graphics (2200)
It is arranged on reflecting surface (2040).It is reflected in general, mainly entering into the light in reflective graphics (2200) from incidence surface (2060)
Figure (2200), therefore the higher region of height by arranging positive quarter portion (2220) on the direction of light incidence, thus maximum
Strengthen to limit the effect of the diffusion and scattering of light possessed by positive quarter portion (2220).
In addition, in display (1000), lateral visual angle serve than vertical visual angle it is bigger, therefore in viewing display
(1000) when, the higher region of maximum height in positive quarter portion (2220) is ordered in vertically, to prevent the reduction at visual angle.Into one
Step, the lower section visual angle weighed in vertical visual angle first more wants important with which kind of visual angle in the visual angle of top, then towards display
(1000) maximum high higher region in positive quarter portion (2220) is arranged above or below.
In addition, optical arrays (1640) can according to circumstances be placed to realize brightness uniformity simultaneously and guarantee visual angle
In lower section, and while forming reflective graphics (2200) make positive quarter portion (2220) it is bigger be partially toward lower section, so as to real simultaneously
Existing brightness uniformity and guarantee visual angle.
In the following, will illustrate the 3rd embodiment in the various shape of reflective graphics according to an embodiment of the present invention (2200).
Figure 16 is according to the oblique view of the 3rd embodiment of the reflective graphics (2200) of the embodiment of the present invention, according to Figure 17
The plan view of the 3rd embodiment of the reflective graphics (2200) of the embodiment of the present invention, and Figure 18 is according to the anti-of the embodiment of the present invention
Penetrate the sectional view of the 3rd embodiment of figure (2200).
As shown in Figure 16~18, the third type and first kind phase of reflective graphics (2200) according to an embodiment of the present invention
It seemingly, may include portion of middle heart-yang quarter (2220) and negative quarter portion (2240).However, shape on reflecting surface (2040) in the first kind
At positive quarter portion (2220) and negative quarter portion (2240), and the reflective graphics (2200) in third type further comprise outer part
(2260), the outer part (2260) is around negative quarter portion (2240) and than the basal plane outwardly convex of reflecting surface (2040).In third class
The shape of the positive quarter portion (2220) of reflective graphics (2200) in type and negative quarter portion (2240) is on the whole and in reflective graphics
(2200) the positive quarter portion (2220) in the first kind is similar with the shape of negative quarter portion (2240), therefore omits the explanation to this.
Outer part (2260) is set around negative quarter portion (2240), is than the portion of the basal plane outwardly convex of reflecting surface (2040)
Point.Wherein, when looking up from the side vertical with reflecting surface (2040), outer part (2260) can be formed as annular shape.It is formed
It the center of the ring of outer part (2260) can be with the center of the circle for forming positive quarter portion (2220) and the ring for forming negative quarter portion (2240)
It overlaps.
In the third type of reflective graphics (2200), outer part (2260) is in its inner radius (with negative quarter portion (2240) phase
Boundary even) there is height identical with the basal plane of reflecting surface (2040), and within certain distance from the inner radius, from
Internal diameter is remoter, and the height also will increase, and is finally reached maximum height, and after reaching maximum height, it can highly be gradually reduced, most
Reach height identical with the basal plane of reflecting surface (2040) eventually and forms outer diameter.At this point, in outer part (2260), inner radius
Gradient it is bigger than the gradient at its outer diameter.According to one embodiment, when from section, outer part (2260) can be with shape
Get up at the curved surface of circular arc type, oval arc-shaped, parabolic type etc. and from convex on the basal plane of reflecting surface (2040).With the curved surface
Surface treated outer part (2260) is readily susceptible to refraction, scatters, the incident light in reflection wider range.In particular, by peripheral
Portion (2260) is set in the outermost of reflective graphics (2200), and disposably to the light for being incident on reflective graphics (2200)
It is scattered, those spread after being scattered by the light that reflective graphics (2200) reflect to front, and from light-emitting surface (2020)
It projects, so that the raising to brightness uniformity makes a significant contribution.
In addition, when looking up from the side vertical with reflecting surface (2040), in the third type of reflective graphics (2200)
Outer part (2260) forms tubular shape, and formed the center of the ring of outer part (2260) and formed positive quarter portion (2220) circle and
The center of the ring of negative quarter portion (2240) is formed without identical.The shape for the outer part (2260) being thusly-formed is due to being asymmetric
, optical characteristics non-isotropy with anisotropy.Specifically, thickness is thicker, the higher side ratio of maximum height with
The side of opposite direction have the effect of the scattering of stronger light.Moreover, with thickness is thicker, the higher side phase of maximum height
Than the side in direction provides better visual angle in contrast.Therefore, by utilizing anisotropic optical characteristics, can improve
The brightness uniformity of display (1000) or visual angle.
In the following, will illustrate the fourth embodiment in the various shape of reflective graphics according to an embodiment of the present invention (2200).
Figure 19 is according to the oblique view of the fourth embodiment of the reflective graphics (2200) of the embodiment of the present invention, according to Figure 20
The plan view of the fourth embodiment of the reflective graphics (2200) of the embodiment of the present invention, and Figure 21 is according to the anti-of the embodiment of the present invention
Penetrate the sectional view of the fourth embodiment of figure (2200).
As shown in Figure 19~21, the 4th type and Second Type phase of reflective graphics (2200) according to an embodiment of the present invention
It seemingly, may include portion of middle heart-yang quarter (2220) and negative quarter portion (2240).However, in Second Type, on reflecting surface (2040)
Positive quarter portion (2220) and negative quarter portion (2240) are formed, and the reflective graphics (2200) in the 4th type further comprise outer part
(2260), the outer part (2260) is around negative quarter portion (2240) and than the basal plane outwardly convex of reflecting surface (2040).In the 4th class
The shape of the positive quarter portion (2220) of reflective graphics (2200) in type and negative quarter portion (2240) is on the whole and in reflective graphics
(2200) the positive quarter portion (2220) in Second Type is similar with the shape of negative quarter portion (2240), therefore omits the explanation to this.
Outer part (2260) is set around negative quarter portion (2240), is than the portion of the basal plane outwardly convex of reflecting surface (2040)
Point.Wherein, when looking up from the side vertical with reflecting surface (2040), outer part (2260) can be formed as annular shape.It is formed
It the center of the ring of outer part (2260) can be with the center of the circle for forming positive quarter portion (2220) and the ring for forming negative quarter portion (2240)
It overlaps.
In the 4th type of reflective graphics (2200), the internal diameter of outer part (2260) (is connected with negative quarter portion (2240)
Boundary) there is the height equal with reflecting surface (2040) basal plane, and got over within certain distance from internal diameter from the inner radius
Far, height also will increase, and be finally reached maximum height, and after reaching depth capacity, it highly gradually becomes smaller, is finally reached and reflects
The identical height of basal plane in face (2040) and form outer diameter.At this point, the gradient of inner radius is than it in outer part (2260)
Gradient at outer diameter is bigger.According to one embodiment, when from section, outer part (2260) can form circular arc type, ellipse
The curved surface of circular arc type, parabolic type etc. simultaneously gets up from convex on the basal plane of reflecting surface (2040).With the curved surface by surface at
The outer part (2260) of reason is readily susceptible to refraction, scatters, the incident light in reflection wider range.In particular, outer part (2260) is set
It is placed in the outermost of reflective graphics (2200), and disposably the light for being incident on reflective graphics (2200) is scattered,
Those spread after being scattered by the light that reflective graphics (2200) reflect to front, and project from light-emitting surface (2020), thus
It makes a significant contribution to the raising of brightness uniformity.
In addition, when looking up from the side vertical with reflecting surface (2040), in the 4th type of reflective graphics (2200)
Outer part (2260) forms tubular shape, and formed the center of the ring of outer part (2260) and formed positive quarter portion (2220) circle and
The center of the ring of negative quarter portion (2240) is formed without identical.The shape for the outer part (2260) being thusly-formed is due to being asymmetric
, optical characteristics non-isotropy with anisotropy.Specifically, thickness is thicker, the higher side ratio of maximum height with
The side of opposite direction have the effect of the scattering of stronger light.Moreover, with thickness is thicker, the higher side phase of maximum height
Than the side in direction provides better visual angle in contrast.Therefore, by utilizing anisotropic optical characteristics, can improve
The brightness uniformity of display (1000) or visual angle.
The embodiment of the present invention reflective graphics (2200) in vertical direction distance (height or height it is absolute
Value) in, the maximum height of negative quarter portion (2240) is maximum, and positive quarter portion (2220) ranked second position, and the highest of outer part (2260) is high
Degree is minimum.Specifically, the height of positive quarter portion (2220) is about 1.2~8 times of height of outer part (2260), and portion of negative quarter
(2240) depth is about 2~14 times of the height of outer part (2260).In addition, the sunk area (2222) of positive quarter portion (2220)
When compared with outer part (2260), the height of the height of the minimum point of sunk area (2222) than the highest point of outer part (2260)
Du Genggao.In addition, the depth gone that is recessed from the highest point of positive quarter portion (2220) to sunk area (2222) is outer part (2260)
About 0.8 ~ 5 times of height.
In addition, positive quarter portion (2220) diameter accounts for about the 60~85% of overall diameter, negative quarter portion in reflective graphics (2200)
(2240) diameter accounts for about the 80~98% of overall diameter, and outer part (2260) diameter accounts for about the 85~100% of overall diameter.In addition,
In reflective graphics (2200), the area of sunk area (2222) accounts for about the 20 ~ 40% of the area of positive quarter portion (2220), i.e., carves in sun
The area in inclined region accounts for about the 20 ~ 40% of the area of positive quarter portion (2220) inward in portion (2220).
According to one embodiment, by roller Sheet Metal Forming Technology, reflective graphics (2200) formed the maximum height with 1~7,
(radius is the height for reaching the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to its height to 35~55 diameter
The distance between position when spending, i.e. the 2 of the radius times) positive quarter portion (2220), sunk area (2222) formed recess
Depth be the gap between the highest point and the lowest point of positive quarter portion (2220) be about 0.3~4, with 2~13 maximum it is deep
Degree, 40~65 outer diameter (reach the height of the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to its height
When 2 times of the distance between position) negative quarter portion (2240) and with 0.5~5 maximum height, 40~70 outer diameter
(the distance between position when reaching the height of the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to its height
2 times) outer part (2260).
In addition, when reflective graphics (2200) are formed as curved surface, for the inclination angle of inclining of each section, negative quarter portion
(2240) inclination angle for connecting the position of outer part (2260) is maximum, and positive quarter portion (2220) connects the position of negative quarter portion (2240)
Inclination angle occupies second, and the inclination angle that outer part (2260) connects the position of reflecting surface (2040) is minimum.
In addition, in above-mentioned attached drawing, reflective graphics (2200) though surface be illustrated as smooth, however reflective graphics
(2200) surface can have certain roughness.In particular, negative quarter portion (2240) and outer part (2260) all have certain value
Or above roughness.
It is to be noted, however, that the size of above-mentioned reflective graphics (2200) is not limited by above-mentioned height, depth
In degree, diameter, gradient, roughness etc., can suitably it change as needed.
All reflective graphics (2200) on the reflecting surface (2040) can be formed substantially the same size, or
The difference at as needed and reflecting surface (2040) position, can form various sizes of reflective graphics (2200).For example, when all
Reflective graphics (2200) when being formed identical size, since there are advantages in technique, so as to reduce production cost
Deng.Example has in contrast to this, and reflective graphics (2200) are adjusted to incidence surface (2060) its nearlyr diameter with regard to smaller, thus
The brightness uniformity on the light-emitting surface (2020) of light guide plate (2000) can be improved on the whole.
As described above, the preferred embodiment of the present invention is only to illustrate and the disclosure made, those skilled in the art can be
It does not depart from and carry out various modifications, changes and add under conditions of spirit and scope of the invention, and this modification, change and add
Add in the range that should be considered as falling into the attached claims.
Claims (15)
1. a kind of light guide plate comprising:
Light-emitting surface is used for outside output light；
Reflecting surface is located at the back side of the light-emitting surface；
Incidence surface, at least one side in the side for connecting the light-emitting surface and reflecting surface and reception is shone by light source
It penetrates and incident light；With
Reflective graphics have to the positive quarter portion of the outer projection of the reflecting surface and around the positive quarter portion and toward described anti-
The ring-type negative quarter portion of the inner recess in face is penetrated,
Wherein, the positive quarter portion has sunk area,
Wherein, when looking up from the side perpendicular to the reflecting surface, the sunk area is the shape with long axis and short axle, and
Wherein, on section vertical with the long axis of the reflecting surface and sunk area respectively, the institute based on the sunk area
The height of projection for stating positive quarter portion side is not identical as the height of projection of its other side.
2. light guide plate according to claim 1, which is characterized in that in the sunk area, be parallel to the incidence surface
Direction on length it is longer than the length on the direction perpendicular to the incidence surface.
3. light guide plate according to claim 1, which is characterized in that in the sunk area, be parallel to the incidence surface
Direction on length it is more shorter than the length on the direction perpendicular to the incidence surface.
4. light guide plate according to claim 1, which is characterized in that when looking up from the side perpendicular to the reflecting surface, institute
Stating sunk area is essentially elliptical shape.
5. light guide plate according to claim 1, which is characterized in that when looking up from the side perpendicular to the reflecting surface,
The long axis of the sunk area can pass through the center in the portion of positive quarter.
6. light guide plate according to claim 1, which is characterized in that when looking up from the side perpendicular to the reflecting surface,
The center predetermined distance of the long axis of the sunk area and the portion of positive quarter.
7. light guide plate according to claim 1, which is characterized in that the long axis of the sunk area is parallel to incidence surface, and
The higher side of height of projection is close with the incidence surface.
8. light guide plate according to claim 1, which is characterized in that the long axis of the sunk area perpendicular to it is described enter light
Face.
9. light guide plate according to claim 1, which is characterized in that the minimum point of the sunk area is in than the reflection
The higher position in face.
10. light guide plate according to claim 1, which is characterized in that described anti-when looking up from the side perpendicular to reflecting surface
Penetrating figure has the annular shape around portion of negative quarter, and further comprises the outer part from reflecting surface outwardly convex.
11. a kind of backlight module comprising:
Light source for irradiation light；With
Light guide plate,
Wherein, the light guide plate has incidence surface, light-emitting surface, reflecting surface and reflective graphics, the incidence surface and the light source phase
To thirty years of age and by the light of light source irradiation can the incident incidence surface, the light-emitting surface is perpendicular to the incidence surface and can be incident by institute
Light export outward, the reflecting surface is located at the back side of the light-emitting surface, and has reflective graphics on the reflecting surface,
The reflective graphics include that circle sun raised from the reflecting surface is carved when the side vertical from the reflecting surface looks up
The ring-type in portion and the inner recess that the portion of positive quarter and the past reflecting surface are surround when looking up from the vertical side of the reflecting surface
Negative quarter portion,
Wherein, the positive quarter portion has sunk area,
Wherein, when looking up from the side perpendicular to the reflecting surface, the sunk area is the shape with long axis and short axle, and
Wherein, on section vertical with the long axis of the reflecting surface and sunk area respectively, the institute based on the sunk area
The height of projection for stating positive quarter portion side is not identical as the height of projection of its other side.
12. backlight module according to claim 11, which is characterized in that in the sunk area, be parallel to it is described enter
Length on the direction of smooth surface is longer than the length on the direction perpendicular to the incidence surface.
13. backlight module according to claim 11, which is characterized in that in the sunk area, be parallel to it is described enter
Length on the direction of smooth surface is more shorter than the length on the direction perpendicular to the incidence surface.
14. backlight module according to claim 11, which is characterized in that the long axis of the sunk area is parallel into light
Face, and the higher side of the height of projection is close with the incidence surface.
15. backlight module according to claim 11, which is characterized in that the minimum point of the sunk area is in than described
The higher position of reflecting surface.
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| US201462038723P | 2014-08-18 | 2014-08-18 | |
| US62/038,723 | 2014-08-18 | ||
| KR1020150045733A KR20160022212A (en) | 2014-08-18 | 2015-03-31 | Light guide plate, backlight unit and display device having the same |
| KR10-2015-0045733 | 2015-03-31 |
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| Publication Number | Publication Date |
|---|---|
| CN105572787A CN105572787A (en) | 2016-05-11 |
| CN105572787B true CN105572787B (en) | 2019-01-15 |
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| CN201510506652.7A Active CN105572788B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device including the light guide plate |
| CN201510506581.0A Active CN105572785B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506484.1A Active CN105572784B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506481.8A Active CN105572783B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device containing the light guide plate |
| CN201510506503.0A Active CN105572963B (en) | 2014-08-18 | 2015-08-18 | A kind of display and its light guide plate |
| CN201510506647.6A Active CN105572787B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506593.3A Active CN105572786B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate and the backlight module including the light guide plate |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510506652.7A Active CN105572788B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device including the light guide plate |
| CN201510506581.0A Active CN105572785B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506484.1A Active CN105572784B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506481.8A Active CN105572783B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device containing the light guide plate |
| CN201510506503.0A Active CN105572963B (en) | 2014-08-18 | 2015-08-18 | A kind of display and its light guide plate |
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| CN201510506593.3A Active CN105572786B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate and the backlight module including the light guide plate |
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| KR (15) | KR20160022223A (en) |
| CN (7) | CN105572788B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105572787A (en) | 2016-05-11 |
| CN105572786A (en) | 2016-05-11 |
| KR20160022218A (en) | 2016-02-29 |
| KR20160022221A (en) | 2016-02-29 |
| KR20160022213A (en) | 2016-02-29 |
| KR20160022211A (en) | 2016-02-29 |
| CN105572963B (en) | 2019-04-19 |
| KR20160022222A (en) | 2016-02-29 |
| CN105572963A (en) | 2016-05-11 |
| KR20160022215A (en) | 2016-02-29 |
| KR20160022220A (en) | 2016-02-29 |
| KR20160022217A (en) | 2016-02-29 |
| KR20160022225A (en) | 2016-02-29 |
| KR20160022216A (en) | 2016-02-29 |
| KR20160022224A (en) | 2016-02-29 |
| CN105572788A (en) | 2016-05-11 |
| CN105572783B (en) | 2019-01-15 |
| KR20160022212A (en) | 2016-02-29 |
| KR20160022219A (en) | 2016-02-29 |
| CN105572786B (en) | 2019-01-15 |
| CN105572785B (en) | 2019-01-15 |
| CN105572784A (en) | 2016-05-11 |
| CN105572784B (en) | 2019-01-15 |
| KR20160022223A (en) | 2016-02-29 |
| CN105572785A (en) | 2016-05-11 |
| CN105572783A (en) | 2016-05-11 |
| CN105572788B (en) | 2019-01-15 |
| KR20160022214A (en) | 2016-02-29 |
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