CN103727452A - Display device and light emitting module and light-guiding plate thereof - Google Patents

Display device and light emitting module and light-guiding plate thereof Download PDF

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Publication number
CN103727452A
CN103727452A CN201210389782.3A CN201210389782A CN103727452A CN 103727452 A CN103727452 A CN 103727452A CN 201210389782 A CN201210389782 A CN 201210389782A CN 103727452 A CN103727452 A CN 103727452A
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China
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light
guide device
lgp
display unit
emitting module
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CN201210389782.3A
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CN103727452B (en
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杨仁智
潘政晟
黄大晋
康宙煜
朱谱錞
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Innocom Technology Shenzhen Co Ltd
Innolux Shenzhen Co Ltd
Chi Mei Optoelectronics Corp
Innolux Corp
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Innolux Shenzhen Co Ltd
Chi Mei Optoelectronics Corp
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Abstract

The invention discloses a light emitting module which comprises a light-guiding plate, a plurality of light-guiding elements and a light emitting unit. The light-guiding plate can guide the light direction, and is provided with at least one incident plane and two opposite side faces. The light-guiding elements are arranged on one side face of the light-guiding plate, and when users observe in the direction perpendicular to one side face, each light-guiding element is a curve provided with at least one inflection point. The light emitting unit is arranged on the incident plane of the light-guiding plate. After light emitted by the light emitting unit enters the light-guiding plate, the light is guided out from one side face of the light-guiding plate in the form of staggered bright and dark shades after being guided through the light-guiding plate and the light-guiding elements. The invention further discloses a display device and the light-guiding plate.

Description

Display unit and light emitting module thereof and LGP
Technical field
The present invention relates to a kind of display unit and light emitting module thereof and LGP.
Background technology
In recent years, because light emitting diode (Light Emitting Diode, LED) is in the continuous improvement aspect technique and material, the luminous efficiency of light emitting diode is significantly promoted.Be different from general fluorescent lamp or Electricity-saving lamp bulb, the characteristic such as light emitting diode has low power consumption, long service life, safe, emission response time is short and volume is little, is therefore also little by little applied in lighting apparatus, lamp box or light emitting module.Wherein, lighting apparatus is for example head, taillight or other the lighting device of indoor and outdoor light fixture, flashlight, locomotive, and light emitting module for example can be applied and become backlight module or other purposes of display unit.
Please refer to shown in Figure 1A and Figure 1B, it is respectively schematic perspective view and the schematic side view of existing a kind of display unit 1.
Display unit 1 comprises a display floater 11 and a light emitting module 12.In this, light emitting module 12 is the backlight module of display unit 1, and the L that can emit beam is through display floater 11, with show image picture.
Light emitting module 12 is arranged at a side of display floater 11, and can comprise two side light sources 121, flat LGP 122 and a multiple light-guide device 123.Two side light sources 121 are respectively take LED optical strip as example, and are arranged at respectively the dual-side that LGP 122 is relative, and to emit beam respectively, L is incident to LGP 122 by an incidence surface I of LGP 122.Each light-guide device 123 is respectively the white ink of slanted bar shape (skew lines), and coats on a bottom surface B1 of LGP 122.Wherein, LGP 122 guides light to be passed to central authorities by both sides by total reflection.In addition, the function of light-guide device 123 is to destroy the total reflection of light, is penetrated and directive display floater 11, with show image picture with directing light by the exiting surface O of LGP 122.
But, when light L is by the exiting surface O directive display floater 11 of LGP 122, light form on exiting surface O is that bright inner room is every staggered skew lines figure, owing to thering is the staggered light shield layer of strip on display floater 11, (be black matrix", light tight, figure does not show), as shown in the region A of Fig. 1 C, (the vertical bar line M showing in Fig. 1 C is formed by light shield layer by light L, and the upper bright dark staggered skew lines light of the exiting surface O that slanted bar line N is LGP 122 is formed), can make the light that penetrates display floater 11 occur the interference phenomenon of optics diffraction and occur that (the region A of Fig. 1 C only indicates an interference fringe to interference fringe, all the other do not indicate), that is there is folded line (Moir é) phenomenon being commonly called as, cause the display quality of display unit 1 to reduce.
Therefore, how to provide a kind of light emitting module and display unit, can change bright dipping light shape, and destroy interference fringe and improve the display quality of display unit, become one of important topic.
Summary of the invention
Because above-mentioned problem, object of the present invention is for providing one can change bright dipping light shape, and destroys interference fringe and improve display unit and light emitting module and the LGP of the display quality of display unit.
For reaching above-mentioned purpose, according to a kind of light emitting module of the present invention, there is a LGP, multiple light-guide device and a luminescence unit.LGP can directing light direction, and has at least one incidence surface and two relative sides.These light-guide devices be arranged at LGP these sides one of them, by one of them direction of vertical these sides, observed, each light-guide device is a curve with at least one point of inflexion.Luminescence unit is arranged at the incidence surface of LGP.After the light that luminescence unit sends enters LGP, by the guiding of LGP and these light-guide devices, one of them derivation by these sides of LGP with bright dark staggered form by light.
In one embodiment, between any two adjacent light-guide devices apart between 0 with the width of the side of these light-guide devices settings between.
In one embodiment, the center line of each light-guide device has an angle with respect to the minor face of the side of these light-guide device settings, and angle is between 0 to 90 degree.
In one embodiment, each light-guide device of being observed by parallel incidence surface direction is groove shape or convex.
In one embodiment, on these light-guide devices, a reflecting material is set respectively.
In one embodiment, by the side surface direction of vertical these light-guide device settings, observed, the width of each light-guide device minor face is between 50 microns and 150 microns.
For reaching above-mentioned purpose, according to a kind of display unit of the present invention, comprise a display floater and a light emitting module.Light emitting module is relative with display floater and establish, and comprise a LGP, multiple light-guide devices and a luminescence unit, LGP can directing light direction, and there are at least one incidence surface and two relative sides, these light-guide devices be arranged at LGP these sides one of them, by one of them direction of vertical these sides, observed, each light-guide device is a curve with at least one point of inflexion, luminescence unit is arranged at the incidence surface of LGP, wherein, after the light that luminescence unit sends enters LGP, by the guiding of LGP and these light-guide devices, one of them derivation by these sides of LGP with bright dark staggered form by light.
In one embodiment, display floater has pixel multiple times, and the curve of each light-guide device is observed and had a peak swing by one of them direction of vertical these sides, and peak swing is greater than 0, and is less than or equal to 1.5 times of width of each pixel minor face.
In one embodiment, the parallax barrier element that light emitting module is display unit.
In one embodiment, display unit more comprises a backlight module, and light emitting module is between display floater and backlight module, and when display unit shows 3D image, backlight module is closed, and when display unit shows 2D image, backlight module is opened.
For reaching above-mentioned purpose, according to a kind of LGP of the present invention, comprise at least one incidence surface, two relative side and multiple light-guide devices.These light-guide devices be arranged at LGP these sides one of them, by one of them direction of vertical these sides, observed, each light-guide device is a curve with at least one point of inflexion.
From the above, because of foundation display unit of the present invention and light emitting module and LGP, because LGP has multiple light-guide devices, these light-guide devices are positioned at a wherein side of LGP, and each light-guide device is a curve with at least one point of inflexion.By this, when light is during by the side directive display floater of the LGP of light emitting module, the setting of the light-guide device by multiple curves, can be on side the bright dark staggered light of forming curves shape, and this curvilinear bright dark staggered light can reduce the interference fringe phenomenon of optics diffraction, therefore, can promote the display quality of display unit.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form limitation of the invention.In the accompanying drawings:
Figure 1A and Figure 1B are respectively schematic perspective view and the schematic side view of existing a kind of display unit;
Fig. 1 C is a kind of schematic diagram of optical interference striped;
Fig. 2 A and Fig. 2 B are respectively schematic perspective view and the schematic side view of a kind of light emitting module of preferred embodiment of the present invention;
Fig. 2 C is another schematic side view of implementing the light emitting module of aspect;
Fig. 3 A and Fig. 3 B are respectively schematic perspective view and the schematic side view of a kind of display unit of preferred embodiment of the present invention;
Fig. 3 C is the pel array of display floater of Fig. 3 A and the relative schematic diagram of these light-guide devices of LGP;
Fig. 3 D is the schematic diagram of the trend curve of a light-guide device; And
Fig. 4 A and Fig. 4 B are respectively the schematic side view of a kind of display unit of another enforcement aspect of the present invention.
Drawing reference numeral:
1,3,3a, 3b: display unit
11,4: display floater
12,2,2a, 2b: light emitting module
121: light source
122: LGP
123,211,211a: light-guide device
21: LGP
22: luminescence unit
224: reflecting material
24: reflecting material
25: light attenuation element
A: region
B, G, R: inferior pixel
B1: bottom surface
BL: backlight module
C: curve
D: distance
I: incidence surface
L: light
L1, L2: straight line
L3: center line
M: vertical bar line
N: slanted bar line
O: exiting surface
S1, S2: side
P, W: width
R: the point of inflexion
X, Y: direction
The specific embodiment
Hereinafter with reference to correlative type, a kind of display unit and light emitting module and LGP according to preferred embodiment of the present invention are described, wherein identical element will be illustrated with identical reference marks.
Please refer to shown in Fig. 2 A and Fig. 2 B, it is respectively schematic perspective view and the schematic side view of a kind of light emitting module 2 of preferred embodiment of the present invention.In this, Fig. 2 A and Fig. 2 B be signal just, does not show real object ratio.In addition, light emitting module 2 of the present invention is for example applicable as a lighting device, or be applied as the backlight module of a flat display apparatus, or also can be a disparity barrier (parallax barrier) element or be that a parallax prism element is applied to a 3 d display device, so that the effect of disparity barrier or parallax prism to be provided, make display unit can show stereopsis.In this, be not limited its purposes.In addition, each module of the present invention or each device all have drive unit and drive signal, are below not described herein.
Light emitting module 2 comprises a LGP 21, multiple light-guide device 211 and a luminescence unit 22.
LGP 21 has at least one incidence surface I and two relative sides.In the present embodiment, as shown in Figure 2 B, LGP 21 has two relative side S1, S2.Wherein, LGP 21(light-guiding plate) in order to guide light going direction, and make with light transmissive material, and light transmissive material for example can be acrylic resin, Merlon, polyvinyl resin or glass, is not limited.The refractive index of light transmissive material is greater than periphery material (for example air, refractive index is about 1), the light with special angle can form total reflection effect in LGP 21 and the boundary of periphery material, and can will guide to middle body by the light of LGP 21 side light inlets, form comparatively equally distributed bright dipping form.In addition, the section shape of LGP 21 can be for example tabular or wedge shape.In this, take flat LGP 21 as example.
Two sides S1, S2 are oppositely arranged, and in this, two sides S1, S2 instruct the surface that the area of tabula rasa 21 is larger, and side S1 is the lower surface of LGP 21, and side S2 is the upper surface of LGP 21.Wherein, incidence surface I and the orthogonal setting of two side faces S1, S2.Wherein, the quantity of the corresponding luminescence unit 22 of the quantity of incidence surface I, and be at least one, also can be multiple.In addition, observer is generally positioned at vertical side S2(and overlooks LGP 21) direction observe light emitting module 2.
These light-guide devices 211 are at least arranged at these sides S1 of LGP 21, one of them side of S2, and use the modes such as scattering or reflection guide or change light path, so that required bright dipping form to be provided.Wherein, these light-guide devices 211 can be arranged in LGP 21, other positions except incidence surface I, for example all there is light-guide device 211 all sides of LGP 21 except incidence surface I, and even the part on the LGP 21 non-surfaces of bosom also can arrange light-guide device 211.In this, as shown in Fig. 2 A, 2B, these light-guide devices 211 are arranged at the side S1(lower surface of LGP 21) be example.Wherein, light-guide device 211 observes by the direction (or direction of parallel side S1) that is parallel to incidence surface I the micro-structural (microstructures) that is in fact groove shape or convex, and while observing (overlooking) LGP 21 by vertical side S2, light-guide device 211 can be considered as respectively in fact a curve.Wherein, each curve at least comprises the more than one point of inflexion (inflection point, also be called flex point, curvilinear figure is turned recessed or is turned protruding by recessed by protruding at this point, and the second derivative of this point is 0 or does not exist), the plural center of curvature (center of circle of one of them osculating circle of line segment between two points of inflexion) and more than one curvature (inverse of osculating circle radius).Direction by vertical side S2 is observed, and the curve of each light-guide device 211 has two immediate parallel lines that can this curve of inner clip, wherein, is called a center line of these light-guide device 211 curves with the equidistant center line of these two parallel lines.
As shown in Figure 2 A, in the present embodiment, the center line of light-guide device 211 is essentially the oblique line of a not parallel direction X and a direction Y (in this, direction Y is the direction on the long limit of incidence surface I, and direction X and direction Y are orthogonal in fact, and be the direction on S1Chang limit, side, or contrary).Wherein, the center line of light-guide device 211 and direction Y or direction X have an angle (acute angle), and angle can be between 0 to 90 degree.In the present embodiment, the center line of each light-guide device 211 is respectively toward left side, and in other enforcement aspect, the center line of each light-guide device 211 also can be respectively the inclination of turning right certainly.In addition, as shown in Figure 2 B, each light-guide device 211 is observed (direction X) in the direction of parallel side S 1, have a curve minor face width P, and width P can be between 50 microns (um) and 150 microns (um).In addition, the long limit total length of each light-guide device 211 curves is between between a times to five times of the long edge lengths of side S1, and preferably is between a times to two times between the long edge lengths of side S1.
Any two light-guide devices 211 are non-intersect, namely between any two light-guide devices 211, do not contact, do not communicate and be also not overlapping.In other words, the spacing at any two light-guide device 211 edges between 0 and the minor face width of the side S1 that arranges of these light-guide devices 211 between, and be not equal to 0.In addition, the section of each light guide 211 (is observed by parallel side S1 direction, direction X) shape can be respectively arc, polygon (can comprise triangle, square, rectangle, trapezoidal, regular polygon) or irregular shape, this shape can cause this interface to have scattering effect, form the total reflection effect of different LGP 21 other interfaces, reach and form region and go out the light pattern that outes of luminous intensity difference (clear zone or dark space).In this, the section shape of each light-guide device 211 is respectively take arc (semicircle) as example.Special one carries, and the section shape (the side-looking direction by parallel side S is observed) of each light-guide device 211 can be identical or not identical.In addition, the center line of these light-guide device curves can have identical or not identical curvature, and the present invention is all limited.In the present embodiment, with interval and curvature homogeneous phase thereof between section shape, two light-guide devices 211 of all light-guide devices 211, be all example.
Luminescence unit is arranged at the incidence surface I of LGP 21.In the present embodiment, the incidence surface I of relative two sides that is adjacent to respectively LGP 21 take two luminescence units 22 is as example.Wherein, the light that luminescence unit 22 sends enters LGP 21 by incidence surface I respectively, and is penetrated by side S1.Luminescence unit 22 can for example comprise at least one light emitting diode, at least one Organic Light Emitting Diode (organic light-emitting diode, OLED), at least one cathode fluorescent tube (cold cathode fluorescent lamp, CCFL) or at least one thermal cathode fluorescent tube (hot cathode fluorescent lamp, HCFL), using respectively as the light source in luminescence unit 22.In this, luminescence unit 22 is respectively take a LED optical strip (light bar) as example, and it has respectively multiple light emitting diodes and is arranged on circuit board.In other enforcement aspect, one group of luminescence unit also can be only set, and be incident to LGP 21 by a side of LGP 21.
Reflecting material 24 is arranged at respectively on these light-guide devices 211, and can reflect the light that luminescence unit 22 sends.Reflecting material 24 can be arranged at respectively on the inwall of these light-guide device 211 grooves or the outer wall of projection, or can fill up respectively the groove of these light-guide devices 211.In this, reflecting material 24 is take the groove that fills up respectively these light-guide devices 211 as example.In the present embodiment, the reflecting material 24 that is positioned at light-guide device 211 can destroy the total reflection of light L, so that light L is penetrated (if reflecting material 24 is positioned on protruding outer wall by the side S2 of LGP 21, reflecting material 24 can stop advancing of light, recycles after making light L by offside reflection).Wherein, reflecting material 24 can comprise oxide, and for example can be white silica (SiO 2), titanium dioxide (TiO 2) or the material of other high reflectance.It is worth mentioning that, light-guide device 211 can select not have reflecting material 24, only relies on scattering effect directing light L to be penetrated by one of them side, and can to cause the light of ejaculation be bright dark staggered form.
Therefore, the light L that luminescence unit 22 sends enters (incident) to LGP 21 by incidence surface I, by the total reflection effect in LGP 21, light can be passed to whole LGP 21, and can be by light scattering by the multiple curve-like light-guide devices 211 with at least one point of inflexion that are positioned at a side wherein, make light by a wherein side of LGP 21, derive (can be side S1 that light-guide device 211 arranges or relative another side S2) with bright dark staggered form.Wherein, be brightly secretly defined as, it is high that bright area represents that dark areas is compared in the brightness in this region, and be greater than 0 compared with the brightness of dark areas.
In addition, please refer to shown in Fig. 2 C, it is the schematic side view of the light emitting module of another enforcement aspect.
In this enforcement aspect, light-guide device 211a is arranged at side S2 upper (on the upper surface of LGP 21), and is observed by the direction of parallel side S2 (or be parallel to incidence surface I direction), and these light-guide devices 211a is actually the micro-structural of convex.In addition, reflecting material 24 is arranged at respectively on the outer wall of these light-guide devices 211a projection.
In addition, other technical characterictic of the light emitting module of Fig. 2 C can, with reference to Fig. 2 B, repeat no more.
Please refer to shown in Fig. 3 A and Fig. 3 B, it is respectively schematic perspective view and the schematic side view of a kind of display unit 3 of preferred embodiment of the present invention.
Light emitting module 2 is relative with display floater 4 and establish, and comprises a LGP 21 and a luminescence unit.
LGP 21 has multiple light-guide devices 211, and these light-guide devices 211 are positioned at a wherein side of LGP 21, in this, to be positioned at the side S1(lower surface of LGP 21) as example.Because in fact light-guide device 211 can be groove or protruding micro-structural, the width of its section is quite little, and when the direction of vertical side S2 is overlooked LGP 21, light-guide device 211 is respectively in fact a curve.In this, as shown in Figure 3A, the light-guide device 211 of curve shape, its center line can be in fact the oblique line of not parallel direction X and direction Y, and in other words, the angle between itself and direction X and direction Y can be between 0 to 90 degree.But, in other embodiments, the center line of light-guide device 211 also can be parallel with direction X or direction Y, and in other words, the angle between itself and direction X and direction Y can be 0 degree or 90 degree.In addition, any two light-guide devices 211 are non-intersect, and between any two adjacent light-guide device 211 edges apart between 0 and the minor face width of the side S1 that arranges of these light-guide devices 211 between, and the section shape that each light-guide device 211 is observed (side-looking, direction X) by parallel side S1 direction can be respectively arc, polygon (can comprise triangle, square, rectangle, trapezoidal, regular polygon) or irregular shape.In this, the section shape of each light-guide device 211 is respectively take arc (semicircle) as example.Special one carries, and the section shape of each light-guide device 211 can be identical or not identical.In addition, the center line of these light-guide devices 211 can have respectively identical or not identical curvature, and the present invention is all limited.In the present embodiment, with interval and curvature homogeneous phase between section shape, the two adjacent light-guide devices 211 of all light-guide devices 211, be all example.In addition, as shown in Figure 3 B, each light-guide device 211 is observed and is had respectively a minor face width P by vertical side S1 direction (direction X), and width P can be between 50 microns and 150 microns.
In addition, luminescence unit is arranged at an incidence surface I of LGP 21, and the L that emits beam enters (incident) to LGP 21 by incidence surface I, via the guiding of LGP 21 and light-guide device 211, can make light L by one of them side S2, derive (ejaculation) with bright dark staggered form.In this, take two luminescence units 22, be adjacent to respectively the incidence surface I of relative two sides of LGP 21 as example.Wherein, the light that luminescence unit 22 sends enters LGP 21 by incidence surface I respectively, and is penetrated by side S2.The luminescence unit 22 of the present embodiment is respectively take a LED optical strip (light bar) as example.In addition, reflecting material 24 is arranged at respectively in these light-guide devices 211.In this, to fill up respectively these light-guide devices 211 as example.In addition, other technical characterictic of light emitting module 2 can, with reference to above-mentioned, repeat no more.
Please refer to shown in Fig. 3 C, it is the pel array of display floater 4 of Fig. 3 A and the relative schematic diagram of these light-guide devices 211 of LGP 21.In this, only show part time pixel and the light-guide device 211 of display floater 4.
Display floater 4 has multiple pixels, and these pixels become a pel array at a direction X and a direction Y shape.Wherein, direction X is orthogonal (identical with direction Y with the direction X of previous embodiment) with direction Y, and each pixel has respectively pixel multiple times, and inferior pixel forms an array equally.In this, it is example that each pixel has respectively three pixel R, G, B.What remind is, these light-guide devices 211 of the present embodiment are just given an example with the relative position relation of time pixel R, G, B, certainly, in other enforcement aspect, these light-guide devices 211 can be different (slope of trend curve and curvature can change) from the relative position relation of time pixel R, G, B.The for example center line of light-guide device 211 can more tilt and be partial to direction X, or can be partial to direction Y.
In addition, the shape that each light-guide device 211 is observed (overlooking) by the direction of vertical side S2 is respectively in fact a curve, and this curve has a peak swing (ultimate range swinging, for two spacing that approach parallel lines most that can this curve of inner clip), and peak swing is less than or equal to 1.5 times of one pixel minor face width, and be greater than 0.In other words, as shown in Figure 3 D, the trend curve of each light-guide device 211 represents with curve C, the point of inflexion of curve C is as shown in the R in figure, and the curve C of each light-guide device 211 has two immediate parallel lines L1, L2 that can this curve C of inner clip, wherein, be called the centre line L 3 of these light-guide device 211 curve C with the equidistant center line of two parallel lines L1, L2.In addition, the peak swing (being the distance B of Fig. 3 D) that curve C swings is less than or equal to 1.5 times of one pixel minor face width W, and is greater than 0.In this, peak swing is the ultimate range that curve C swings, i.e. distance between the tangent line of curve C peak and minimum point (straight line) L1, L2.Wherein, the width on the long limit of inferior pixel is generally 3 times of minor face width, but the long limit of inferior pixel and minor face width be not take this ratio as restriction.In addition, the angle (acute angle) that the centre line L 3 of light-guide device 211 and direction Y or direction X have can be between 0 to 90 degree.
By experimental results show that of reality, in display unit 3 of the present invention, when light L is during by the side S2 directive display floater 4 of the LGP 21 of light emitting module 2, the reflection of light-guide device 211(and the reflecting material 224 of multiple trend curves is set) by the side S1 at LGP 21, can make to penetrate the L shaped one-tenth curve of light of LGP 21 and the light of bright dark alternative form, when by display floater 4, the light of this form can lower with display floater 4 on light shield layer (being black matrix") produce the interference phenomenon of optics diffraction and reduce interference fringe, therefore, can promote the display quality of display unit 3.
Explanation is again, at another, implement in aspect, the light emitting module 2 of display unit more can comprise a reflecting plate and or at least one blooming piece (figure do not show), reflecting plate can be arranged at a wherein side (with the opposition side of display floater 4) of the side of LGP 21, so that the light that penetrates side is reflexed in LGP 21 again.In addition, blooming piece can be for example a diffusion sheet, and can be arranged between light emitting module 2 and display floater 4, so that penetrate the light of light emitting module 2, can form a uniform area source after by diffusion sheet.Wherein, between reflecting plate and blooming piece and LGP 21, can there is gap.
In addition, in another enforcement aspect, light emitting module 2 can be used as parallax (parallax) control element of a 3 d display device, to become a parallax barrier element, the left-eye images that the light of the upper staggered bright dark form of side S2 can be exported the pixel on display floater 4 can be transferred into beholder's left eye, and the right-eye image that on display floater 4, pixel is exported can be transferred into beholder's right eye, two of beholder can be received respectively there is binocular parallax the different images of (binocular parallax), and then allow beholder not need to wear auxiliary eyeglasses just can be with bore hole perception stereopsis.Wherein, when the parallax barrier element as 3 d display device, the curvature of all light-guide devices 211 needs identical, and identical every also needing between two adjacent LGPs 211.
In addition, please refer to shown in Fig. 4 A, for the present invention, another implements the schematic side view of a kind of display unit 3a of aspect for it.
Different be main from display unit 3, when light emitting module 2a makes display unit 3a can show 3D image as the parallax barrier element of display unit 3a, light emitting module 2a more can have a light attenuation element (attenuator) 25 and be arranged at a side of LGP 21 side S1.When light passes the side S1 of LGP 21 and enters light attenuation element 25, light attenuation element 25 can lower (or absorption) its energy, to avoid the light that penetrates side S1 to reflect again the bright dipping that enters LGP 21 and disturb light emitting module 2a, and then affect the stereoscopic display effect of display unit 3.
In addition, please refer to shown in Fig. 4 B the schematic side view of its a kind of display unit 3b that is the another enforcement aspect of the present invention.
When light emitting module 2a is during as the parallax barrier element of display unit 3b, display unit 3b more can comprise a backlight module BL, backlight module BL is arranged at a side (light emitting module 2a is between display floater 4 and backlight module BL) of light emitting module 2a, to provide light to display floater 4.Wherein, when display unit 3b will show 3D image, backlight module BL can be closed and only by light emitting module 2a luminous.In addition, when making light emitting module 2a and backlight module BL luminous (backlight module BL unlatching), can make display unit 3b show the image of 2D simultaneously.By this, can switch and make display unit 3b can show the image of 2D or 3D.
In addition, other technical characterictic of display unit 3a and display unit 3b can, with reference to the similar elements of display unit 3, repeat no more in this.
In sum, because of foundation display unit of the present invention and light emitting module and LGP, because LGP has multiple light-guide devices, these light-guide devices are positioned at a wherein side of LGP, and each light-guide device is a curve with at least one point of inflexion.By this, when light is during by the side directive display floater of the LGP of light emitting module, the setting of the light-guide device by multiple curves, can be on side the bright dark staggered light of forming curves shape, and this curvilinear bright dark staggered light can reduce the interference fringe phenomenon of optics diffraction, therefore, can promote the display quality of display unit.
The foregoing is only illustrative, but not be restricted.Anyly do not depart from spirit of the present invention and category, and equivalent modifications or change that it is carried out all should be contained in claim scope.

Claims (20)

1. a light emitting module, is characterized in that, comprising:
One LGP, it can directing light direction, and has at least one incidence surface and two relative sides;
Multiple light-guide devices, be arranged at described LGP described side one of them, by one of them direction of vertical described side, observed, each described light-guide device is a curve with at least one point of inflexion; And
One luminescence unit, is arranged at the described incidence surface of described LGP;
Wherein, after the light that described luminescence unit sends enters described LGP, by the guiding of described LGP and the light-guide device such as described, one of them derivation by the described side of described LGP with bright dark staggered form by light.
2. light emitting module as claimed in claim 1, is characterized in that, the spacing of any two adjacent light-guide devices between 0 and the width of described side that arranges of described light-guide device between.
3. light emitting module as claimed in claim 1, is characterized in that, the center line of each described light-guide device has an angle with respect to the minor face of the described side of described light-guide device setting, and described angle is between 0 to 90 degree.
4. light emitting module as claimed in claim 1, is characterized in that, the each described light-guide device of being observed by parallel described incidence surface direction is groove shape or convex.
5. light emitting module as claimed in claim 4, is characterized in that, a reflecting material is set respectively on described light-guide device.
6. light emitting module as claimed in claim 1, is characterized in that, by the described side surface direction of vertical described light-guide device setting, is observed, and the width of each described light-guide device minor face is between 50 microns and 150 microns.
7. a display unit, is characterized in that, comprising:
One display floater; And
One light emitting module, relative with described display floater and establish, and comprise a LGP, multiple light-guide device and a luminescence unit, described LGP can directing light direction, and has at least one incidence surface and two relative sides, described light-guide device be arranged at described LGP described side one of them, by one of them direction of vertical described side, observed, each described light-guide device is a curve with at least one point of inflexion, and described luminescence unit is arranged at the described incidence surface of described LGP
Wherein, after the light that described luminescence unit sends enters described LGP, by the guiding of described LGP and described light-guide device, one of them derivation by the described side of described LGP with bright dark staggered form by light.
8. display unit as claimed in claim 7, is characterized in that, the spacing of any two adjacent light-guide devices between 0 and the width of described side that arranges of described light-guide device between.
9. display unit as claimed in claim 7, is characterized in that, the center line of each described light-guide device has an angle with respect to the minor face of the described side of described light-guide device setting, and described angle is between 0 to 90 degree.
10. display unit as claimed in claim 7, is characterized in that, the each described light-guide device of being observed by parallel described incidence surface direction is groove shape or convex.
11. display unit as claimed in claim 10, is characterized in that, a reflecting material is set respectively on described light-guide device.
12. display unit as claimed in claim 7, is characterized in that, by the described side surface direction of vertical described light-guide device setting, are observed, and the width of each described light-guide device minor face is between 50 microns and 150 microns.
13. display unit as claimed in claim 7, it is characterized in that, described display floater has pixel multiple times, the described curve of each described light-guide device is observed and is had a peak swing by one of them direction of vertical described side, described peak swing is greater than 0, and is less than or equal to 1.5 times of width of each described pixel minor face.
14. display unit as claimed in claim 7, is characterized in that, the parallax barrier element that described light emitting module is described display unit.
15. display unit as claimed in claim 14, it is characterized in that, described display unit more comprises a backlight module, described light emitting module is between described display floater and described backlight module, when described display unit shows 3D image, described backlight module is closed, and when described display unit shows 2D image, described backlight module is opened.
16. 1 kinds of LGPs, is characterized in that, comprising:
At least one incidence surface;
Two relative sides; And
Multiple light-guide devices, be arranged at described LGP described side one of them, by one of them direction of vertical described side, observed, each described light-guide device is a curve with at least one point of inflexion.
17. LGPs as claimed in claim 16, is characterized in that, by the described side surface direction of vertical described light-guide device setting, are observed, and the width of each described light-guide device minor face is between 50 microns and 150 microns.
18. LGPs as claimed in claim 16, is characterized in that, the center line of each described light-guide device has an angle with respect to the minor face of the described side of described light-guide device setting, and described angle is between 0 to 90 degree.
19. LGPs as claimed in claim 16, is characterized in that, the described light-guide device of being observed by parallel described incidence surface direction is groove shape or convex.
20. LGPs as claimed in claim 19, is characterized in that, a reflecting material is set respectively on described light-guide device.
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