CN105785576A - Display panel, preparation method thereof and 3D display device - Google Patents
Display panel, preparation method thereof and 3D display device Download PDFInfo
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- CN105785576A CN105785576A CN201610178880.0A CN201610178880A CN105785576A CN 105785576 A CN105785576 A CN 105785576A CN 201610178880 A CN201610178880 A CN 201610178880A CN 105785576 A CN105785576 A CN 105785576A
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- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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Abstract
The invention discloses a display panel, a preparation method thereof and a 3D display device. The display panel comprises a grating module, a first substrate, a luminescent module and a second substrate which are arranged successively; the grating module comprises slits and grating units which are arranged alternatively; any grating unit comprises a reflection layer and a transparent dielectric layer, the transparent dielectric layer is arranged in the upper surface of the first substrate, and the reflection layer is laminated on the upper surface of the transparent dielectric layer; and a concave curved mirror in which at least one mirror surface is orientated to the luminescent module is formed in the interface where the reflection layer intersects with the transparent dielectric layer, and the concave curved mirror is used to receive optical signals emitted by the luminescent module and reflect the received optical signals to the luminescent module, so that the optical signals reflected to the luminescent module can be recovered and reused. The display brightness of the display panel is improved.
Description
Technical field
The present embodiments relate to communication technical field, particularly relate to a kind of display floater, 3D display device and preparation method thereof.
Background technology
The bore hole 3D Display Technique of current active illuminating display device, mostly adopt the mode of fore or disparity barrier, the light path schematic diagram of the bore hole 3D display device possessing preposition disparity barrier as shown in Figure 1, because slit and the grating of disparity barrier are alternately arranged successively, realize entering after the view data that on display floater, odd column pixel cell receives shows the left eye visual angle of people, the view data that even column pixels unit receives enters the right-eye perspectives of people after showing, the eye image that the left-eye image that user's left eye is seen is seen with right eye is separated, left-eye image and eye image are through the process of the brain of people, user is made to experience 3D stereoscopic picture plane.
3D display device is when 3D shows pattern, the problem that right-eye perspectives is entered in left eye multi-view image crosstalk easily occurs, in order to prevent from entering the mutual crosstalk of the picture material of right and left eyes, the disparity barrier of 3D display device is usually with the material of black light-absorbing or liquid crystal grating, the light blocked can be sponged without because entering another eyes after reflection, can the crosstalk that enter the picture material of right and left eyes be preferably minimized.
But, always blocked the light that a part is launched from luminescent layer due to grating when the disparity barrier of 3D display device is fixed grating, no matter it is that 3D shows pattern, or 2D shows pattern, the light entering left eye and the light entering right eye respectively account for half, cause that the brightness of image that 3D display device shows is relatively low, affect the visual experience of people.
To sum up, prior art also exists the technical problem that the preposition fixed grating of 3D display device can cause 3D display device display brightness relatively low.
Summary of the invention
The embodiment of the present invention provides a kind of display floater, 3D display device and preparation method thereof, the technical problem that the preposition fixed grating in order to solve the 3D display device that prior art exists can cause 3D display device display brightness relatively low.
The embodiment of the present invention provides a kind of display floater, including:
Grating module, first substrate, illuminating module and the second substrate set gradually, described grating module includes the slit and the raster unit that are arranged alternately successively；
Arbitrary raster unit, including: reflecting layer and transparent dielectric layer；Described transparent dielectric layer is arranged on the upper surface of described first substrate, and described reflecting layer is stacked in the upper surface of described transparent dielectric layer；
Wherein, the intersection interface of described reflecting layer and described transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards described illuminating module, described concave curvatures mirror, for receiving the optical signal that described illuminating module sends, and is reflected back described illuminating module by the described optical signal received.Because of concave curvatures mirror, it is possible to receive the optical signal that described illuminating module sends, and the described optical signal received is reflected back described illuminating module so that the optical signal being reflected back illuminating module is recycled, and improves the display brightness of display floater.
Further, for any one concave curvatures mirror of described raster unit, the focus of the concave curvatures at described concave curvatures mirror place is positioned on the main shaft of described concave curvatures；
The string pixel of the concave curvatures at described concave curvatures mirror place uniquely corresponding described illuminating module, and the centrage of the string pixel cross section of described unique correspondence is through the main shaft of described concave curvatures, so that described concave curvatures mirror receives the optical signal that the string pixel of described unique correspondence sends, and the optical signal that the string pixel of the described unique correspondence received sends is reflected back into the string pixel of described unique correspondence, or reflect back into the row pixel identical with described unique corresponding string pixel odd even.
Further, the focal length of described concave curvatures meets claimed below:
nullThe focal length of described concave curvatures is equal to the half of the summit extremely distance of the string pixel of described unique correspondence of described concave curvatures，Namely the optical signal that uniquely corresponding with described concave curvatures string pixel sends incides the half of the distance of described concave curvatures mirror with the direction being parallel to described main shaft，Make the row pixel of described unique correspondence at big real images such as the opposite side formation of described concave curvatures，Pixel imaging also can as light source luminescent，Reversibility according to light path，The optical signal that every string pixel sends is made to occur reflection back reflection to return row pixel itself at each concave curvatures mirror，Or it is reflected back the row pixel identical with row pixel odd even，Namely the optical signal that odd column pixel sends occurs reflection back reflection to return row pixel itself or other odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return row pixel itself or other even column pixels at each concave curvatures mirror，The optical signal being reflected back illuminating module is recycled，Improve the display brightness of display floater，Simultaneously，The right and left eyes of the image that odd column pixel shows with even column pixels corresponding people respectively，The optical signal that odd column pixel sends occurs reflection back reflection to return odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return even column pixels at each concave curvatures mirror，It is possible to prevent enter the image at left eye visual angle and enter the image generation crosstalk of right-eye perspectives.
Further, described reflecting layer is the metal level of high reflectance, and described transparent dielectric layer is the organic layer of high permeability.The organic layer of high permeability can make the optical signal that illuminating module sends pass through transparent dielectric layer, less loss incide the concave curvatures mirror that reflecting layer and transparent dielectric layer are constituted, reflect at concave curvatures mirror, more many reflection light returns to illuminating module, more can effectively improve the brightness of display floater.
Further, described grating module is additionally provided with protective layer away from the surface of described second substrate.This protective layer can effectively protect grating module not oxidated
Further, the described protective layer of described grating module is additionally provided with rotatory polarization sheet, for reflexing to the light outside grating module from the outer surface in the reflecting layer of grating module, the outer surface in the reflecting layer of grating module, refer to that reflecting layer reflexes to after the light outside grating module enters to inject rotatory polarization sheet away from the surface of transparent dielectric layer from the outer surface in the reflecting layer of grating module, the light absorbing axle parallel vibrating with polaroid is predominantly absorbed, it is parallel to the light through axle and is changed into circularly polarized light, the phase delay layer being first circularly polarized on sheet after optical grating reflection is changed into the polarized light vertical with through axle, sponged by layer of polarizer, the light being possible to prevent this partially reflective light right and left eyes visual angle to entering people produces interference, thus avoiding these reflection light to affect display effect.
The embodiment of the present invention provides a kind of 3D display device, including above-mentioned display floater.
The preparation method that the embodiment of the present invention provides a kind of display floater, including:
Prepare on the first substrate and there is the initial transparent dielectric layer setting figure；
Second substrate is prepared grating module, when making described first substrate be fitted in described second substrate above, described initial transparent dielectric layer is at position one_to_one corresponding on described second substrate of each row pixel of the position of described first substrate and described illuminating module；
Described initial transparent dielectric layer is shaped as the transparent dielectric layer that multiple convex surface is connected, and each convex surface is corresponding with unique string pixel；
Deposition of reflective layer on the transparent dielectric layer that the plurality of convex surface is connected；
Etch the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface, form the grating module on described first substrate, described grating module includes slit and raster unit, and the region that the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface is etched forms described slit；The region that the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface is not etched forms described raster unit, reflecting layer and the intersection interface of transparent dielectric layer in described raster unit constitute at least one minute surface concave curvatures mirror towards described illuminating module, described concave curvatures mirror, for receiving the optical signal that described illuminating module sends, and the described optical signal received is reflected back described illuminating module.
Arbitrary raster unit of this grating module that above-mentioned preparation method is prepared includes: near the transparent dielectric layer of illuminating module, reflecting layer with transparent dielectric layer surface, the intersection interface of described reflecting layer and described transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards described illuminating module, because of the concave curvatures mirror towards grating module, the optical signal that described illuminating module sends can be received, and the described optical signal received is reflected back described illuminating module, the optical signal being reflected back illuminating module is recycled, improve the display brightness of display floater.
Further, the transparent dielectric layer that the described reflecting layer of described etching is connected with the plurality of convex surface, the grating module formed on described first substrate includes:
Described reflecting layer is coated with photoresist；
According to the mask of assignment graph, the photoresist being coated in described reflecting layer is carried out photoetching, form the first opening above described photoresist layer；
It is positioned at the described reflecting layer below described photoresist layer by the described first opening etching above described photoresist layer, generates second opening on the transparent dielectric layer surface that the degree of depth is connected to the plurality of convex surface；
Being positioned at, by described second opening oxidation, the transparent dielectric layer that the plurality of convex surface below described reflecting layer is connected, generate the degree of depth the 3rd opening to described first substrate surface, the position of described 3rd opening is corresponding with described second opening；
Remove the described photoresist on surface, described reflecting layer, form the grating module on described first substrate.
Further, after the described photoresist on surface, described removal described reflecting layer, also include:
Surface and described second opening, described 3rd opening part deposition protective layer in described reflecting layer.This protective layer can effectively protect grating module not oxidated, and this protective layer can not only increase the adhesion between grating module and first substrate, but also is avoided that reflecting layer is subject to the impact of external environment condition, and then improves the reliability of grating module.
In above-described embodiment, the preposition grating module that display floater includes includes the slit and the raster unit that are arranged alternately successively, arbitrary raster unit of this grating module includes: near the transparent dielectric layer of illuminating module, reflecting layer with transparent dielectric layer surface, the intersection interface of described reflecting layer and described transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards described illuminating module, because of the concave curvatures mirror towards grating module, the optical signal that described illuminating module sends can be received, and the described optical signal received is reflected back described illuminating module, the optical signal being reflected back illuminating module is recycled, improve the display brightness of display floater.
Accompanying drawing explanation
Fig. 1 is the light path schematic diagram of a kind of 3D display device possessing preposition disparity barrier of the prior art；
The structural representation of a kind of display floater that Fig. 2 provides for the embodiment of the present invention；
The light path schematic diagram of a kind of preposition grating module that Fig. 3 provides for the embodiment of the present invention；
The concave curvatures at the concave curvatures mirror place in the raster unit of a kind of preposition grating module that Fig. 4 provides for the embodiment of the present invention and the corresponding relation schematic diagram of pel array；
The principle of reflection schematic diagram of the concave curvatures mirror that raster unit is constituted in a kind of preposition grating module that Fig. 5 provides for the embodiment of the present invention；
The index path of a kind of concave mirror imaging that Fig. 6 a provides for the embodiment of the present invention；
The image-forming principle schematic diagram of the concave curvatures mirror that raster unit is constituted in a kind of preposition grating module that Fig. 6 b to Fig. 6 e provides for the embodiment of the present invention；
Each structural representation of a kind of display floater in the preparation process of grating module that Fig. 7 to Figure 15 provides for the embodiment of the present invention.
Detailed description of the invention
In order to solve the technical problem that in prior art, the preposition fixed grating of the 3D display device of existence can cause 3D display device display brightness relatively low.In order to improve the display brightness of display floater, embodiments provide a kind of new preposition fixed grating structure, i.e. grating module in following embodiment, this grating module includes the slit and the raster unit that are arranged alternately successively, arbitrary raster unit of this grating module includes: near the transparent dielectric layer of illuminating module, reflecting layer with transparent dielectric layer surface, the intersection interface of reflecting layer and transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards illuminating module, because of concave curvatures mirror, the optical signal that illuminating module sends can be received, and the optical signal received is reflected back illuminating module, the optical signal being reflected back illuminating module is recycled, improve the display brightness of display floater.
Embodiments provide display floater as shown in Figure 2, including:
Grating module 104, first substrate 101, illuminating module 103 and the second substrate 102 set gradually, grating module 104 includes the slit 401 and the raster unit 402 that are arranged alternately successively；Arbitrary raster unit 402, including: reflecting layer 205 and transparent dielectric layer 206, transparent dielectric layer 206 is arranged on the upper surface of first substrate 101, and reflecting layer 205 is stacked in the upper surface of transparent dielectric layer 206；Wherein, the intersection interface of reflecting layer 205 and transparent dielectric layer 206 constitutes at least one minute surface concave curvatures mirror towards illuminating module, concave curvatures mirror, for receiving the optical signal that illuminating module 103 sends, and the optical signal received is reflected back illuminating module 103.Wherein, the reflecting layer that lamination in any one raster unit is arranged and transparent dielectric layer, the intersection interface of reflecting layer and transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards illuminating module, refer to that the intersection interface of reflecting layer and transparent dielectric layer constitutes one or two (as shown in Figure 2, the reflecting layer of some raster units and the intersection interface of transparent dielectric layer constitute a concave curvatures mirror, the intersection interface of the reflecting layer of some raster units and transparent dielectric layer constitutes two concave curvatures mirrors) concave curvatures mirror in the first direction, first direction refers to that reflecting surface is pointed to the direction of the transparent dielectric layer that lamination is arranged by reflecting layer, namely first substrate 101 points to the direction of second substrate 102.
Wherein, as in figure 2 it is shown, first substrate 101 and second substrate 102 are oppositely arranged, grating module 104 is arranged on the first substrate 101 surface away from second substrate 102；Illuminating module 103 is arranged between first substrate 101 and second substrate 102；Illuminating module 103 is odd column pixel and the alternately arranged successively pel array of even column pixels, and the light emitting diode of the pixel cell of pel array issues optical signals in the control of gate drive signal.In order to realize 3D display effect, odd column pixel shows access into the picture material (in Fig. 2 the L of labelling) at left eye visual angle, even column pixels shows access into the picture material (in Fig. 2 the R of labelling) of right-eye perspectives, by the control of data signal, realize the image entering the left eye visual angle of people different with the image of the right-eye perspectives entering people, present the 3D display effect of display floater.
In order to realize 3D display effect, there is alignment in grating module 104 and illuminating module 103, as shown in Figure 3, every two row pixels of illuminating module 103 tilt a slit of corresponding grating module 104,1L row pixel first slit corresponding to 2R row pixel as adjacent, making the optical signal that 1L row pixel sends enter the left eye visual angle of people through this slit, the optical signal that 2R row pixel sends enters the right-eye perspectives of people through this slit；3L row pixel second slit corresponding to 4R row pixel, the optical signal that 3L row pixel sends is made to enter the left eye visual angle of people through this slit, the optical signal that 4R row pixel sends enters the right-eye perspectives of people through this slit, the rest may be inferred, therefore, the alignment of every two row pixels of illuminating module 103 and each slit of grating module 104, the left eye visual angle of the picture material entrance people that odd column pixel shows can be realized, the picture material that even column pixels shows enters the right-eye perspectives of people, it is achieved the separation of right and left eyes image.
As shown in Figure 2, grating module 104 in the embodiment of the present invention includes the raster unit 402 arranged between the slits, each raster unit 402 includes reflecting layer 205 and is positioned at the transparent dielectric layer 206 below reflecting layer, the intersection interface of reflecting layer 205 and transparent dielectric layer 206 constitutes at least one concave curvatures mirror, namely the reflecting layer 205 of a raster unit and the intersection interface of transparent dielectric layer 206 may be constructed a concave curvatures mirror, it is also possible to constitute two the concave curvatures mirrors being connected.Curved surface for the concave curvatures mirror in the raster unit of diverse location is likely to difference, this is because the inclination alignment of grating module 104 and illuminating module 103, causes that the mask pattern of grating module 104 is different from the mask pattern of illuminating module 103 and causes.
But the radian of the concave curvatures at these concave curvatures mirror places is identical, as shown in Figure 4, the concave curvatures at these concave curvatures mirror places refers to before preparing grating module 104, each concave curvatures that reflecting layer 203 on first substrate and transparent dielectric layer 202 are constituted.And the position of each concave curvatures that reflecting layer 203 on first substrate and transparent dielectric layer 202 are constituted, one-to-one relationship is there is with the position of each row pixel of illuminating module 103, reflecting layer 203 on first substrate is identical with the radian of each concave curvatures that transparent dielectric layer 202 is constituted, and the centrage of each concave curvatures cross section overlaps with the centrage of the cross section of corresponding row pixel.When the mask pattern according to grating module 104, after reflecting layer 203 on Fig. 4 first substrate and transparent dielectric layer 202 are performed etching, it is the formation of the grating module 104 shown in Fig. 2, wherein, the part that reflecting layer 203 on first substrate and transparent dielectric layer 202 are etched away is slit 401, and the part not being etched is raster unit 402.
Therefore, the concave curvatures mirror that in Fig. 2, in the raster unit 402 of grating module 104, the intersection interface of reflecting layer 205 and transparent dielectric layer 206 is constituted is the part curved surface of the concave curvatures shown in Fig. 4.Although the curved surface of 1 or 2 the concave curvatures mirror that the intersection interface of reflecting layer 205 and transparent dielectric layer 206 is constituted varies in size in the raster unit 402 of grating module 104 so that the concave curvatures at each concave curvatures mirror in Fig. 2 grating module 104 and these concave curvatures mirror places possesses identical optical property.
Below in conjunction with Fig. 5 and Fig. 6 b, the optical property of each concave curvatures mirror in Fig. 2 is illustrated.Fig. 5 is the reflected light path schematic diagram of the concave curvatures at each concave curvatures mirror place in Fig. 2, and Fig. 6 b is the imaging schematic diagram of the concave curvatures at each concave curvatures mirror place in Fig. 2.
The focus of the concave curvatures at each concave curvatures mirror place in Fig. 2 and focal length, relevant with the radian of concave curvatures, in the embodiment of the present invention, in order to while improving display floater brightness, prevent the light crosstalk of right and left eyes, for any one concave curvatures mirror of raster unit, the focus of the concave curvatures at concave curvatures mirror place and focal length is made to meet:
(1) the string pixel of the concave curvatures at concave curvatures mirror place uniquely corresponding illuminating module, and the centrage of unique corresponding string pixel cross section is through the main shaft of concave curvatures, and the focus of the concave curvatures at concave curvatures mirror place is positioned on the main shaft of concave curvatures；
For the reflected light signal of the optical signal that second L row pixel in Fig. 5 sends, the optical property that the above-mentioned corresponding relation of concave curvatures and row pixel reaches is described.The 3rd concave curvatures that 3L row pixel is constituted with the reflecting layer 203 on the first substrate shown in Fig. 5 and transparent dielectric layer 202 is corresponding, because reflecting layer 203 is the metal level of high reflectance, such as Ag, transparent dielectric layer 202 is the organic layer of high permeability, such as organic resin, therefore, this concave curvatures is equivalent to a concave mirror, and minute surface is towards 3L row pixel, the centrage of the cross section of 3L row pixel is through the main shaft of the 3rd concave curvatures, and the focal point F of the 3rd concave curvatures is positioned on the main shaft of this concave curvatures.
(2) focal length of concave curvatures incides the half of the distance of concave curvatures mirror equal to the optical signal that the string pixel uniquely corresponding with concave curvatures sends with the direction being parallel to main shaft, and namely the focal length of concave curvatures is equal to the concave curvatures uniquely corresponding string pixel half to the distance on the summit of this concave curvatures.
As shown in Figure 6 b, the summit of a concave curvatures is the central point of this concave curvatures, and this central point is through the main shaft of concave curvatures.The focal point F of one concave curvatures is positioned on the main shaft of this concave curvatures, and the size of focal distance f is equal to the half of the light path of the incident illumination being parallel to this concave curvatures main shaft, namely focal point F is to the distance of concave curvatures central point, and wherein, this concave curvatures main shaft is through the central point of concave curvatures and focal point F.It is to say, the distance at the string pixel concave curvatures center corresponding with this row pixel is equal to 2 times of focal lengths (2f in Fig. 6 b) of this concave curvatures.
Image-forming principle according to concave mirror, object distance U, image distance V and focal distance f meet following relation:Wherein, object distance U is the object distance to concave mirror summit, and image distance V is the imaging distance to concave mirror summit, and f is concave mirror focal length, and R is concave mirror radius of curvature, and the focal length of concave mirror and the relation of radius of curvature are f=R/2.As object distance U=2f, the big real image such as it is at concave mirror opposite side, and V=U=2f=R.As shown in Figure 6 a, object A is arranged on the reflecting surface side of concave mirror, and the focal length of concave mirror is f, and focus is F, and as object distance U=2f, object A is at the big real image A such as opposite side one-tenth of concave mirror, and image distance V=2f.The light being parallel to concave mirror incident meets in a focus after concave mirror, through overfocus incident ray through concave mirror be directional light.Therefore, the embodiment of the present invention is in conjunction with the above-mentioned image-forming principle of concave mirror, the corresponding relation of each row pixel and concave curvatures mirror place concave curvatures is set, make the vertical dimension 2 times of focal lengths equal to concave curvatures at each column pixel concave curvatures center corresponding with this row pixel, can make each column pixel the big real image such as is at the opposite side of each self-corresponding concave curvatures, reversibility according to light, the real image of each row pixel can return to each row pixel self as the light that light source sends.
In the embodiment of the present invention, focus and the focal length of the concave curvatures at any one concave curvatures mirror place of raster unit meet above-mentioned relation, and there is corresponding relation with each row pixel in the concave curvatures at any one concave curvatures mirror place of raster unit, make any one concave curvatures receive the optical signal that the string pixel uniquely corresponding with this concave curvatures sends, and the optical signal that the unique corresponding string pixel received sends is reflected back into unique corresponding string pixel.
As it is shown in figure 5, when the incident optical signal that 3L row pixel sends incides the concave curvatures corresponding with 3L row pixel, occur the reflection light of reflection to return to 3L row pixel in the concave curvatures corresponding with 3L row pixel.Reflection law below according to concave mirror, illustrate with the reflection characteristic of three special light, such as, as shown in Figure 6 b, for being parallel to the incident optical signal of the major axes orientation of this concave curvatures, after the concave curvatures corresponding with 3L row pixel reflects, reflection light returns 3L row pixel through focal point F back reflection；For inciding the incident ray on the summit of the concave curvatures corresponding with 3L row pixel after this concave curvatures reflects, reflection light must be reflected back 3L row pixel；For the incident ray through focal point F, after this concave curvatures reflects, reflection light returns to 3L row pixel with the direction being parallel to the main shaft of this concave curvatures.
Image-forming principle according to concave mirror, the distance on the summit that 3L row pixel arrives the concave curvatures corresponding with 3L row pixel is 2 times of focal lengths, therefore, 3L row pixel is at the big real image (3L shown in dotted portion as shown in Fig. 6 b and Fig. 6 c) such as opposite side Cheng Yu 3L row pixel of the concave curvatures corresponding with 3L row pixel, as fig. 6 c, the real image of 3L row pixel continues to incide 3L row pixel as the incident illumination that light source sends behind the summit of the concave curvatures corresponding with 3L row pixel, the incident illumination being parallel to this concave curvatures main shaft that the real image of 3L row pixel sends as light source, the reverse extending line that the reflection light of reflection occurs in this concave curvatures returns to 3L row pixel.Owing to the real image of 3L row pixel is that the incident optical signal sent according to 3L row pixel occurs the reflection light of reflection to be formed in this concave curvatures, therefore when using the real image (dotted line 3L) of 3L row pixel as luminous source, the light that the real image of 3L row pixel sends as light source can return to 3L row pixel, reversibility according to imaging optical path, when the incident optical signal that 3L row pixel sends incides the concave curvatures corresponding with 3L row pixel, the reflection light of reflection is occurred necessarily to return to the reason of 3L row pixel in the concave curvatures corresponding with 3L row pixel.In the embodiment of the present invention, focus and the focal length of the concave curvatures at any one concave curvatures mirror place of raster unit meet above-mentioned relation, and there is corresponding relation with each row pixel in the concave curvatures at any one concave curvatures mirror place of raster unit, make any one concave curvatures receive the optical signal that the string pixel uniquely corresponding with this concave curvatures sends, and the optical signal that the unique corresponding string pixel received sends is reflected back into unique corresponding string pixel.
Based on identical reason, when the light that 1L row pixel sends is incident on concave curvatures corresponding to 1L row pixel, at big real image 1L such as the opposite side one-tenth of concave curvatures that 1L row pixel is corresponding, when making the optical signal that 1L row pixel sends incide the concave curvatures corresponding with 1L row pixel, the reflection light of reflection is occurred necessarily to return to 1L row pixel in the concave curvatures corresponding with 1L row pixel；When the light that 2L row pixel sends is incident on concave curvatures corresponding to 2L row pixel, at big real image 2L such as the opposite side one-tenth of concave curvatures that 2L row pixel is corresponding, when making the optical signal that 2L row pixel sends incide the concave curvatures corresponding with 2L row pixel, the reflection light of reflection is occurred necessarily to return to 2L row pixel in the concave curvatures corresponding with 2L row pixel；The like, when the optical signal that every string pixel of illuminating module 103 sends incides the concave curvatures corresponding with this row pixel, occur the reflection light of reflection necessarily to return to this row pixel self in the concave curvatures corresponding with this row pixel.So, the optical signal being reflected back each row pixel is recycled, improve the display brightness of display floater, string pixel occurs the reflection light of reflection to return to this row pixel self in the concave curvatures corresponding with this row pixel, do not return to other row pixels, it is possible to prevent from entering the image generation crosstalk at right and left eyes visual angle.
In the embodiment of the present invention, focus and the focal length of the concave curvatures at any one concave curvatures mirror place of raster unit meet above-mentioned relation, and the corresponding relation that the concave curvatures at any one concave curvatures mirror place of raster unit exists with each row pixel, during except the optical signal that every string pixel sends can be made to incide the concave curvatures corresponding with this row pixel, outside the concave curvatures corresponding with this row pixel occurs the reflection light of reflection to return to this row pixel self, the reflection light of reflection is there is when this row pixel can also be incided other concave curvatures mirrors, reflect back into the row pixel identical with this row pixel odd even, also can reach improve display brightness and prevent the effect of right and left eyes picture crosstalk.
Such as, the optical signal example still sent with the 3L row pixel shown in Fig. 5, when the incident optical signal that 3L row pixel sends incides the concave curvatures corresponding with 2R row pixel, the reflection light of reflection is occurred to return to 1L row pixel in the concave curvatures corresponding with 2R row pixel.Below in conjunction with Fig. 6 b and Fig. 6 d, its principle is illustrated.Image-forming principle according to concave mirror, the distance on the summit that 3L row pixel arrives the concave curvatures corresponding with 2R row pixel is 2f, therefore, 3L row pixel is at the big real image (3L-a shown in dotted portion as shown in Fig. 6 b and Fig. 6 c such as opposite side Cheng Yu 3L row pixel of the concave curvatures corresponding with 2R row pixel, 3L-a is for distinguishing real image 3L corresponding with 3L row pixel in Fig. 6 b and Fig. 6 c), the position of the real image 3L-a big with 3L row pixel etc. is corresponding with the position of 1L row pixel；As shown in fig 6d, the real image 3L-a of 3L row pixel continues to incide 1L row pixel as the incident illumination that light source sends behind the summit of the concave curvatures corresponding with 1L row pixel, the incident illumination being parallel to concave curvatures main shaft corresponding to 1L row pixel that the real image 3L-a of 3L row pixel sends as light source, occurs the reverse extending line of the reflection light of reflection to return to 1L row pixel in the concave curvatures that 1L row pixel is corresponding.Owing to the real image 3L-a of 3L row pixel is that the incident optical signal sent according to 3L row pixel occurs the reflection light of reflection to be formed in the concave curvatures that 2R row pixel is corresponding, when using the real image (dotted line 3L-a) of 3L row pixel as luminous source, the light that the real image 3L-a of 3L row pixel sends can return to 1L row pixel, so, reversibility according to imaging optical path, when the optical signal that 3L row pixel sends incides the concave curvatures corresponding with 2R row pixel, the reflection light of reflection is occurred necessarily to return to 1L row pixel in the concave curvatures corresponding with 2R row pixel.
Based on identical principle, when the incident optical signal that 3L row pixel sends incides the concave curvatures corresponding with 4R row pixel, the reflection light of reflection is occurred to return to 5L row pixel in the concave curvatures corresponding with 4R row pixel.Below in conjunction with Fig. 6 b and Fig. 6 e, its principle is illustrated.Image-forming principle according to concave mirror, the vertical dimension on the summit that 3L row pixel arrives the concave curvatures corresponding with 4R row pixel is 2f, therefore, 3L row pixel is at the big real image (3L-b shown in dotted portion as shown in Fig. 6 b and Fig. 6 c such as opposite side Cheng Yu 3L row pixel of the concave curvatures corresponding with 4R row pixel, 3L-b is for distinguishing real image 3L in Fig. 6 b, Fig. 6 c and Fig. 6 d and real image 3L-a), the position of the real image 3L-b big with 3L row pixel etc. is corresponding with the position of 5L row pixel.As shown in fig 6e, the real image 3L-b of 3L row pixel continues to incide 5L row pixel as the incident illumination that light source sends behind the summit of the concave curvatures corresponding with 5L row pixel, the incident illumination being parallel to concave curvatures main shaft corresponding to 5L row pixel that the real image 3L-b of 3L row pixel sends as light source, occurs the reverse extending line of the reflection light of reflection to return to 5L row pixel in the concave curvatures that 5L row pixel is corresponding.Owing to the real image 3L-a of 3L row pixel is that the incident optical signal sent according to 3L row pixel occurs the reflection light of reflection to be formed in the concave curvatures that 4R row pixel is corresponding, when using the real image (dotted line 3L-b) of 3L row pixel as luminous source, the light that the real image 3L-b of 3L row pixel sends can return to 5L row pixel, so, reversibility according to imaging optical path, when the optical signal that 3L row pixel sends incides the concave curvatures corresponding with 4R row pixel, the reflection light of reflection is occurred necessarily to return to 5L row pixel in the concave curvatures corresponding with 4R row pixel.
nullTo sum up，When 3L row pixel incides concave curvatures corresponding to adjacent column pixel，The object distance all meeting 3L row pixel arrival concave curvatures row pixel corresponding to adjacent with 3L row pixel is 2f，Therefore，The optical signal that 3L row pixel sends，When inciding the concave curvatures corresponding to the row pixel adjacent with 3L row pixel，The big real images such as the opposite side Cheng Yu 3L row pixel in the concave curvatures corresponding to the row pixel adjacent with 3L row pixel，Make to occur the reflected light back of reflection to return in the row pixel (1L row pixel and 5L row pixel) identical with 3L row pixel odd even in the concave curvatures corresponding to the row pixel adjacent with 3L row pixel，So，The optical signal being reflected back each row pixel is recycled，Improve the display brightness of display floater，And 3L row pixel at the reflection light of each contiguous concave curvatures or returns 3L row pixel itself，Return in the row pixel identical with 3L row pixel odd even，Do not return in other row pixels different from 3L row pixel odd even，And then ensure that crosstalk does not occur the image entering right and left eyes visual angle.
The above-mentioned optical characteristics of 3L row pixel is only for example, in the embodiment of the present invention, the concave curvatures at arbitrary concave curvatures mirror place of grating module 104 meets the following conditions: one, the string pixel of the concave curvatures at arbitrary concave curvatures mirror place of grating module 104 uniquely corresponding illuminating module in the embodiment of the present invention, and the centrage of unique corresponding string pixel cross section is through the main shaft of concave curvatures, and the focus of the concave curvatures at concave curvatures mirror place is positioned on the main shaft of concave curvatures；Its two, the focal length of the concave curvatures at arbitrary concave curvatures mirror place of the grating module 104 string pixel uniquely corresponding equal to this concave curvatures is to the half of the distance on the summit of this concave curvatures.Therefore, the optical signal sent for illuminating module in the embodiment of the present invention 103 each row pixel all possesses above-mentioned optical characteristics, if the either rank pixel that X row pixel is illuminating module 103, for the X row pixel of illuminating module 103, all has following optical characteristics:
First, when the optical signal that the X row pixel of illuminating module 103 sends incides the concave curvatures corresponding with X row pixel, at big real images such as the opposite side one-tenth of concave curvatures that X row pixel is corresponding, when making the optical signal that X row pixel sends incide the concave curvatures corresponding with X row pixel, the reflection light that reflection occurs in the concave curvatures corresponding with X row pixel returns to X row pixel self, the optical signal returning to X row pixel self is recycled, improve the display brightness of display floater, this partially reflective light returns to X row pixel self, without returning to other row pixels, it is possible to prevent to enter the image generation crosstalk at right and left eyes visual angle.
nullSecond，When the optical signal that the X row pixel of illuminating module 103 sends incides the concave curvatures corresponding with the row pixel of X row pixel vicinity，The object distance all meeting the concave curvatures corresponding to row pixel that X row pixel arrives and X row pixel is contiguous is 2f，Therefore，The optical signal that X row pixel sends，When inciding the concave curvatures corresponding to the row pixel adjacent with X row pixel，The real image that opposite side Cheng Yu X row pixel in the concave curvatures corresponding to the row pixel contiguous with X row pixel etc. are big，Make to occur the reflected light back of reflection to return in the row pixel identical with 3L row pixel odd even in the concave curvatures corresponding to the row pixel contiguous with X row pixel，So，The optical signal being reflected back the row pixel identical with 3L row pixel odd even is recycled，Improve the display brightness of display floater，And this partially reflective light is only reflected back the row pixel identical with 3L row pixel odd even，Without returning in other row pixels different from 3L row pixel odd even，And then ensure that crosstalk does not occur the image entering right and left eyes visual angle.
In the embodiment of the present invention, if the row pixel uniquely corresponding with concave curvatures is odd column pixel, then this concave curvatures receives the optical signal that corresponding pel array sends, and the optical signal that this pel array sends is reflected back this pel array itself, or it is reflected back on other odd column pixel；If the row pixel uniquely corresponding with concave curvatures is even column pixels, then this concave curvatures receives the optical signal that corresponding pel array sends, and the optical signal that this pel array sends is reflected back this pel array itself, or it is reflected back on other even column pixels, the optical signal being reflected back illuminating module is so made to be recycled, improve the display brightness of display floater, and, because the right and left eyes of the image that odd column pixel shows with even column pixels corresponding people respectively, therefore, the optical signal launch that odd column pixel sends returns odd column pixel, the optical signal that even column pixels sends is reflected back even column pixels, it is possible to prevent enter the image at left eye visual angle and enter the image generation crosstalk of right-eye perspectives.
For the concave curvatures mirror in grating arbitrary in grating module 104, it it is a part of concave curvatures after each concave curvatures is etched, there is above-mentioned optical property equally, the optical signal launch sent by odd column pixel returns odd column pixel, the optical signal that even column pixels sends is reflected back the reflexive property of even column pixels, the optical signal being reflected back illuminating module is recycled, improve the display brightness of display floater, at the same time it can also be prevent from entering the image at left eye visual angle and entering the image generation crosstalk of right-eye perspectives.
nullThe optical signal that the above-mentioned condition that the focus of the concave curvatures at the concave curvatures mirror place of arbitrary raster unit of the grating module 104 of above-mentioned display floater meets with focal length sends except making either rank pixel reflects at the concave curvatures mirror that each row pixel is corresponding，Reflection light returns this row pixel or is reflected back the row pixel identical with this row pixel odd even，Reflection light can be reused，Improve display brightness，Can also ensure that either rank pixel is at big real images such as the opposite side one-tenth of concave curvatures mirror corresponding to this row pixel，Pixel imaging also can as light source luminescent，Reversibility according to light path，The optical signal that every string pixel sends is made to occur reflection back reflection to return row pixel itself at each concave curvatures mirror，Or it is reflected back the row pixel identical with row pixel odd even，Namely the optical signal that odd column pixel sends occurs reflection back reflection to return row pixel itself or other odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return row pixel itself or other even column pixels at each concave curvatures mirror，The optical signal being reflected back illuminating module is recycled，Improve the display brightness of display floater，Simultaneously，The right and left eyes of the image that odd column pixel shows with even column pixels corresponding people respectively，The optical signal that odd column pixel sends occurs reflection back reflection to return odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return even column pixels at each concave curvatures mirror，Realize entering between the image at left eye visual angle and the image entering right-eye perspectives and do not produce crosstalk.
Preferably, in arbitrary raster unit of the grating module 104 of above-mentioned display floater, reflecting layer is the metal level of high reflectance, one or more in silver, titanium, aluminum, silver alloy, aluminium alloy or titanium alloy.Transparent dielectric layer is the organic layer of high permeability.
Preferably, the grating module of above-mentioned display floater is additionally provided with protective layer away from the surface of second substrate.The protective layer 105 on surface, reflecting layer 205 and substrate 101 surface it is arranged in Figure 14.This protective layer can not only increase the adhesion between grating module and first substrate, but also is avoided that reflecting layer is subject to the impact of external environment condition, and then improves the reliability of grating module.Protective layer is transparent thin film layer, and its material includes one or more in tin indium oxide ITO, organic insulator, silicon oxide sio 2 and silicon nitride SiNx.
Preferably; the protective layer of grating module is additionally provided with rotatory polarization sheet; the light outside grating module is reflexed to for the outer surface absorbed from the reflecting layer of grating module; the outer surface in the reflecting layer of grating module; refer to the surface away from transparent dielectric layer, the reflecting layer, it is possible to prevent the light at this partially reflective light right and left eyes visual angle to entering people from producing interference.
In the embodiment of the present invention, as shown in figure 15, rotatory polarization sheet 106 is arranged on the upper surface of protective layer 105.The upper surface of grating module can also be set directly at.After the light outside the outer surface in the reflecting layer of grating module reflexes to grating module enters to inject rotatory polarization sheet, the light absorbing axle parallel vibrating with polaroid is predominantly absorbed, it is parallel to the light through axle and is changed into circularly polarized light, the phase delay layer being first circularly polarized on sheet after optical grating reflection is changed into the polarized light vertical with through axle, sponged by layer of polarizer, it is to avoid these reflection light affect display effect.
Based on identical inventive concept, the embodiment of the present invention also provides for a kind of 3D display device, including the display floater in above-described embodiment, it is possible to increase display brightness, moreover it is possible to ensure that crosstalk does not occur right and left eyes.
Based on identical inventive concept, the embodiment of the present invention additionally provides the manufacture method of above-mentioned display floater, especially the preparation method of grating module.Specifically include:
Step one, prepares on the first substrate and has the initial transparent dielectric layer setting figure；
Concrete, as it is shown in fig. 7, prepare on first substrate 101, there is the initial transparent dielectric layer 201 setting figure, initial transparent dielectric layer 201 is made up of resin material and sensitive material.
Step 2, prepares illuminating module so that when first substrate is fitted in second substrate above on second substrate, and initial transparent dielectric layer is at position one_to_one corresponding on second substrate of each row pixel of the position of first substrate and illuminating module；
Concrete, as shown in Figure 7, on second substrate 102, the illuminating module 103 of preparation is made up of each row pixel, odd column pixel and even column pixels is alternately arranged forms, odd column pixel is used for showing left-eye image, even column pixels is used for showing eye image, and the position that each row pixel of illuminating module 103 is on second substrate 102, with the initial transparent dielectric layer 201 position one_to_one corresponding on first substrate 101 so that the centrage of the initial transparent dielectric layer 201 that the centrage of string pixel is corresponding with this row pixel overlaps.
Step 3, is shaped as initial transparent dielectric layer the transparent dielectric layer that multiple convex surface is connected, and each convex surface is corresponding with unique string pixel；
Concrete, as shown in Figure 8, initial transparent dielectric layer 201 is shaped as the transparent dielectric layer 202 that multiple convex surface is connected, specifically at a set temperature, initial transparent dielectric layer 201 is toasted, sending elastic deformation after initial transparent dielectric layer 201 is heated, multiple convex surfaces of the upper surface of the transparent dielectric layer 202 after thermoplastic deformation are connected, and lower surface is communicated as one.Having the projection of transparent dielectric layer of convex surface in a second direction, second direction refers to the direction being pointed to first substrate 101 by second substrate 102.
In Fig. 8 there is corresponding relation in each row pixel and multiple convex surfaces, the centrage making the convex surface that the centrage of string pixel is corresponding with this row pixel overlaps, after the purpose of do so is to ensure that the light that each column pixel sends reflects on the concave curvatures mirror of the raster unit made in the future, or it is reflected back the row pixel that this row pixel itself is identical with the odd even of this row pixel, it is prevented that the crosstalk at right and left eyes visual angle.
Step 4, deposition of reflective layer on the transparent dielectric layer that multiple convex surfaces are connected；
Concrete, as it is shown in figure 9, the reflecting layer 203 deposited on the transparent dielectric layer 202 that multiple convex surfaces are connected, reflecting layer 203 can be Ag.The intersection interface of the transparent dielectric layer 202 that reflecting layer 203 is connected with multiple convex surfaces constitutes multiple concave curvatures towards illuminating module, and in the first direction, first direction refers to the direction being pointed to second substrate by first substrate 101 in the depression direction of each concave curvatures.Because reflecting layer is metal level, transparent dielectric layer is transparent with machine medium, the concave curvatures that the intersection interface of reflecting layer 203 and transparent dielectric layer 202 is constituted is made to be equivalent to a concave mirror, and a concave curvatures correspondence string pixel, the focal length of concave mirror arrives the half of the distance of the central point of the concave curvatures corresponding with row pixel equal to row pixel.In Fig. 9 there is corresponding relation in each row pixel and multiple concave curvatures so that the centrage of the concave curvatures that the centrage of string pixel is corresponding with this row pixel overlaps.Such corresponding relation makes each concave curvatures that reflecting layer 203 is constituted with transparent dielectric layer 202, the string pixel of unique corresponding illuminating module 103, and the centrage of the uniquely corresponding string pixel cross section of each concave curvatures is through the main shaft of this concave curvatures, and the focus of this concave curvatures is positioned on the main shaft of this concave curvatures.
Step 5, the transparent dielectric layer that etching reflecting layer is connected with multiple convex surfaces, form the grating module on first substrate；
Concrete, the transparent dielectric layer 202 that successively etching reflecting layer 203 is connected with multiple convex surfaces, on formation first substrate, the grating module of 101 is as shown in figure 13, grating module includes the region that the transparent dielectric layer 202 that slit 401 and raster unit 402, reflecting layer 203 and multiple convex surfaces are connected is etched and forms slit 401；The region that the transparent dielectric layer 202 that reflecting layer 203 is connected with multiple convex surfaces is not etched forms raster unit 402, each raster unit 402, it is made up of the reflecting layer 205 after etching and transparent dielectric layer 206, reflecting layer 205 and the intersection interface of transparent dielectric layer 206 in raster unit 402 constitute at least one minute surface concave curvatures mirror towards illuminating module, concave curvatures mirror, for receiving the optical signal that illuminating module sends, and the optical signal received is reflected back illuminating module.
In above-mentioned steps five, the transparent dielectric layer 202 that successively etching reflecting layer 203 is connected with multiple convex surfaces, form multiple raster units 402 of 101 and the detailed process of slit 401 on first substrate and comprise the following steps:
The first step, is coated with photoresist on reflecting layer 203；
Second step, carries out photoetching according to the mask of assignment graph to the photoresist being coated in reflecting layer 203, forms the first opening above photoresist layer；As shown in Figure 10, the photoresist 204 on reflecting layer 203 forms multiple first opening 301 after being photo-etched, the position of the first opening 301 is corresponding with the slit 401 of grating module.The position at the part place that photoresist 204 is not photo-etched is corresponding with the position at raster unit 402 place of grating module.
3rd step, by the first opening 301 that photoresist layer 204 is formed, etching is positioned at photoresist layer 204 reflecting layer 203 below, generates second opening 302 on transparent dielectric layer 202 surface that the degree of depth is connected to multiple convex surfaces；
Dotted portion as shown in figure 11 is the second opening 302 of signal, namely the region that reflecting layer 203 is etched, second opening 302 is corresponding with the position at the first opening 301 place, corresponding second opening of each first opening 301 that photoresist layer 204 is formed, the first opening 301 and the second opening 302 that show in Figure 11 are only signal.The reflecting layer 205 partly as raster unit 402 that reflecting layer 203 is not etched, the position of the part that reflecting layer 203 is etched is corresponding with the slit of raster unit 402.
4th step, is positioned at, by the second opening 302 oxidation, the transparent dielectric layer 202 that the multiple convex surfaces below reflecting layer are connected, generates the degree of depth the 3rd opening 303 to first substrate 101 surface, and the position of the 3rd opening 303 is corresponding with the second opening 302；
As shown in figure 12, the region of transparent dielectric layer 202 etching is the region that the 3rd opening is corresponding.Because transparent dielectric layer 202 is organic resin layer, therefore, the method that oxidation need to be adopted, transparent dielectric layer 202 ash in the region corresponding with the second opening 302 is melted, to form slit 401.The part that transparent dielectric layer 202 is not etched is the transparent dielectric layer 206 of raster unit 402.
5th step, as shown in figure 13, removes the photoresist on surface, reflecting layer 205, forms the grating module on first substrate 101.
Preferably, before the 4th step, also include: remove and form, in etching, the residue remaining in the second opening inwall in the process of the second opening.
Preferably, before the 5th step, also include: remove residual in the process forming the 3rd opening.
Preferably; in order to prevent the raster unit generated oxidized, after the 5th step, also include: the surface in the reflecting layer after etching and the second opening, the 3rd opening part deposition protective layer; as shown in figure 14, protective layer 105 is arranged on the surface in grating module slit and reflecting layer 205.
The display floater prepared according to the method described above, including the grating module being arranged on first substrate 101, grating module includes the slit 401 and the raster unit 402 that are arranged alternately successively；Arbitrary raster unit 402, including: reflecting layer 205 and transparent dielectric layer 206, the intersection interface of reflecting layer 205 and transparent dielectric layer 206 constitutes at least one minute surface concave curvatures mirror towards illuminating module, concave curvatures mirror, for receiving the optical signal that illuminating module 103 sends, and the optical signal received is reflected back illuminating module 103, so that the optical signal being reflected back illuminating module is recycled, improve the display brightness of display floater.
Based on above-mentioned preparation method, in display floater, at least one concave curvatures mirror that the reflecting layer 205 of raster unit and the intersection interface of transparent dielectric layer 206 are constituted, the concave curvatures at each concave curvatures mirror place is the concave curvatures towards illuminating module that the transparent dielectric layer 202 that reflecting layer 203 is connected with multiple convex surfaces is constituted.In order to ensure that above-mentioned display floater has good display effect, there is not crosstalk in the image particularly in the image and entrance right-eye perspectives that enter left eye visual angle under 3D display pattern, the radian of each concave curvatures that the thickness in the reflecting layer 203 and transparent dielectric layer 202 of preparing above-mentioned raster unit and transparent dielectric layer 202 are constituted with reflecting layer 203 can be carried out required design so that the focus of each concave curvatures that transparent dielectric layer 202 is constituted with reflecting layer 203 and focal length meet:
The focus of each concave curvatures is positioned on the centrage of the uniquely corresponding string pixel cross section of this concave curvatures, and the focal length of each concave curvatures incides the half of the light path of this concave curvatures equal to the optical signal that the string pixel uniquely corresponding with this concave curvatures sends with the direction being parallel to main shaft.
So, each concave curvatures is equivalent to a concave mirror, and there is corresponding relation with string pixel in grating module in a concave curvatures, the focus making each concave curvatures is positioned on the centrage of the uniquely corresponding string pixel cross section of this concave curvatures, so, the optical signal that display floater either rank pixel sends reflects at the concave curvatures mirror that each row pixel is corresponding, reflection light returns this row pixel or is reflected back the row pixel identical with this row pixel odd even, reflection light can be reused, improve display brightness.
nullAdditionally，In display floater，The focal length of each concave curvatures incides the half of the distance of this concave curvatures equal to the optical signal that the string pixel uniquely corresponding with this concave curvatures sends with the direction being parallel to main shaft，Make the distance 2 times of focal lengths equal to this concave curvatures at the either rank pixel concave curvatures center corresponding with this row pixel，Either rank pixel can be made at big real images such as the opposite side one-tenth of concave curvatures corresponding to this row pixel，The optical signal that odd column pixel sends is made to occur reflection back reflection to return odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return even column pixels at each concave curvatures mirror，The optical signal being reflected back illuminating module is recycled，Improve the display brightness of display floater，Simultaneously，The right and left eyes of the image that odd column pixel shows with even column pixels corresponding people respectively，The optical signal that odd column pixel sends occurs reflection back reflection to return odd column pixel at each concave curvatures mirror，The optical signal that even column pixels sends occurs reflection back reflection to return even column pixels at each concave curvatures mirror，It is possible to prevent enter the image at left eye visual angle and enter the image generation crosstalk of right-eye perspectives.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a display floater, it is characterised in that including:
Grating module, first substrate, illuminating module and the second substrate set gradually, described grating module includes the slit and the raster unit that are arranged alternately successively；
Arbitrary raster unit, including: reflecting layer and transparent dielectric layer；Described transparent dielectric layer is arranged on the upper surface of described first substrate, and described reflecting layer is stacked in the upper surface of described transparent dielectric layer；
Wherein, the intersection interface of described reflecting layer and described transparent dielectric layer constitutes at least one minute surface concave curvatures mirror towards described illuminating module, described concave curvatures mirror, for receiving the optical signal that described illuminating module sends, and is reflected back described illuminating module by the described optical signal received.
2. display floater as claimed in claim 1, it is characterised in that for any one concave curvatures mirror of described raster unit, the focus of the concave curvatures at described concave curvatures mirror place is positioned on the main shaft of described concave curvatures；
The string pixel of the concave curvatures at described concave curvatures mirror place uniquely corresponding described illuminating module, and the centrage of the string pixel cross section of described unique correspondence is through the main shaft of described concave curvatures.
3. display floater as claimed in claim 2, it is characterised in that the focal length of described concave curvatures meets claimed below:
The focal length of described concave curvatures is equal to the half of the summit extremely distance of the string pixel of described unique correspondence of described concave curvatures.
4. display floater as claimed in claim 1, it is characterised in that
Described reflecting layer is the metal level of high reflectance, and described transparent dielectric layer is the organic layer of high permeability.
5. display floater as claimed in claim 1, it is characterised in that described grating module is additionally provided with protective layer away from the surface of described second substrate.
6. display floater as claimed in claim 5, it is characterised in that the described protective layer of described grating module is additionally provided with rotatory polarization sheet.
7. a 3D display device, including the display floater according to any one of claim 1-6.
8. the preparation method of a display floater, it is characterised in that including:
Prepare on the first substrate and there is the initial transparent dielectric layer setting figure；
Second substrate is prepared grating module, when making described first substrate be fitted in described second substrate above, described initial transparent dielectric layer is at position one_to_one corresponding on described second substrate of each row pixel of the position of described first substrate and described illuminating module；
Described initial transparent dielectric layer is shaped as the transparent dielectric layer that multiple convex surface is connected, and each convex surface is corresponding with unique string pixel；
Deposition of reflective layer on the transparent dielectric layer that the plurality of convex surface is connected；
Etch the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface, form the grating module on described first substrate, described grating module includes slit and raster unit, and the region that the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface is etched forms described slit；The region that the transparent dielectric layer that described reflecting layer is connected with the plurality of convex surface is not etched forms described raster unit, reflecting layer and the intersection interface of transparent dielectric layer in described raster unit constitute at least one minute surface concave curvatures mirror towards described illuminating module, described concave curvatures mirror, for receiving the optical signal that described illuminating module sends, and the described optical signal received is reflected back described illuminating module.
9. method as claimed in claim 8, it is characterised in that the transparent dielectric layer that the described reflecting layer of described etching is connected with the plurality of convex surface, the grating module formed on described first substrate includes:
Described reflecting layer is coated with photoresist；
According to the mask of assignment graph, the photoresist being coated in described reflecting layer is carried out photoetching, form the first opening above described photoresist layer；
It is positioned at the described reflecting layer below described photoresist layer by the described first opening etching above described photoresist layer, generates second opening on the transparent dielectric layer surface that the degree of depth is connected to the plurality of convex surface；
Being positioned at, by described second opening oxidation, the transparent dielectric layer that the plurality of convex surface below described reflecting layer is connected, generate the degree of depth the 3rd opening to described first substrate surface, the position of described 3rd opening is corresponding with described second opening；
Remove the described photoresist on surface, described reflecting layer, form the grating module on described first substrate.
10. method as claimed in claim 9, it is characterised in that after the described photoresist on surface, described removal described reflecting layer, also include:
Surface and described second opening, described 3rd opening part deposition protective layer in described reflecting layer.
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