CN200944140Y - Straight waveguide display panel - Google Patents
Straight waveguide display panel Download PDFInfo
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- CN200944140Y CN200944140Y CN 200620119441 CN200620119441U CN200944140Y CN 200944140 Y CN200944140 Y CN 200944140Y CN 200620119441 CN200620119441 CN 200620119441 CN 200620119441 U CN200620119441 U CN 200620119441U CN 200944140 Y CN200944140 Y CN 200944140Y
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Abstract
The utility model relates to a flat waveguide display panel, which is characterized in that the utility model consists of a flat waveguide and a covering layer, wherein the covering layer is arranged at one side of the flat waveguide. Compared with the existing technology, the utility model has a simple structure with all solid state instruments has the advantages of low energy consumption and plentiful colors, which can be made into a transparent display.
Description
Technical field
The utility model relates to a kind of flat wave-guide display apparatus panel, specifically, relates to a kind of flat-panel display panel made from waveguide material.
Background technology
Divide by principle of work, flat-panel monitor can be divided into LCD, plasma display, organic light emitting diode display, light emitting diode indicator, electroluminescence panel display, vacuum fluorescence tube display and Field Emission Display.
Can comprise as wherein having of graphic presentation product use at present: LCD, plasma display, organic light emitting diode display and light emitting diode indicator.
The range of application of LCD is the widest, and the problem of its existence is: manufacturing process complexity, accuracy requirement height, and manufacturing cost is higher, conditions of streaking is arranged when showing dynamic image, cisco unity malfunction during low temperature, and the light source power of LCD fixes, and utilization factor backlight is lower.Plasma display cost height, resolving power are low, and luminescence efficiency is low, and power consumption is higher.The manufacture process requirement height of organic light emitting diode display, the display sizes that processes is little, can only be as the miniscope such as mobile phone etc.The Pixel Dimensions of light emitting diode indicator is big, can only as watch at a distance such as giant displays such as advertisement prompting boards.
The sharp Travis of Britain inventor Adrien Robert has been applied for multinomial relevant flat-panel monitor in China patent.These patents all are to utilize projector that image is dropped into the taper waveguide plate basically, and light reaches after the critical angle from waveguide plate and injects on the cutout screen of being close to waveguide plate and form image.This flat panel display configuration complexity, and can not calculate the flat-panel monitor of doing truly, and be a kind of projection display.
At present, close at the display color effect of the display color of LCD and plasma display and CRT monitor, but the too high problem of manufacturing cost, relevant enterprise such as Sony, Mitsubishi etc. are both at home and abroad all developing laser writer energetically.The optical maser wavelength that laser writer produces is single, and three looks all purer, can synthesize the color that other display can not show.Need powerful laser instrument but laser writer will reach desired brightness, thereby bring heat dissipation problem, cost is also high; And the display thickness size is bigger.
Summary of the invention
The purpose of this utility model be provide at the defective of aspects such as the described display fabrication process that exists in the prior art, cost that a kind of simple in structure, full solid-state device, energy consumption are low, rich color and can be made into transparent display.
For this reason, the utility model is by the following technical solutions:
A kind of flat wave-guide display apparatus panel is characterized in that: comprise flat wave-guide and overlayer, described overlayer is positioned at a side of described flat wave-guide.
A kind of optimal technical scheme is characterized in that: also comprise substrate and coupled waveguide, described coupled waveguide is between described overlayer and described flat wave-guide; Described substrate is positioned at the opposite side of described flat wave-guide; The both sides of described coupled waveguide are provided with transparency electrode.
A kind of optimal technical scheme is characterized in that: described flat wave-guide is the electric light flat wave-guide; The both sides of described electric light flat wave-guide are provided with electrode.
A kind of optimal technical scheme is characterized in that: also comprise substrate, described flat wave-guide is the electric light flat wave-guide; The both sides of described electric light flat wave-guide are provided with electrode.
A kind of optimal technical scheme is characterized in that: also comprise coupled waveguide, microdrive support plate and microdrive; Described coupled waveguide and has a gap between described coupled waveguide and the described flat wave-guide between described flat wave-guide and described microdrive; Be provided with microdrive between described coupled waveguide and the described microdrive support plate, the adhesive surface of described coupled waveguide and described microdrive is little rib reflecting surface.
A kind of optimal technical scheme is characterized in that: described flat wave-guide and coupled waveguide are straight rectangle cube.
A kind of optimal technical scheme is characterized in that: described microdrive is static, electromagnetism, electrostriction or magnetostriction drive form.After loading electric signal, described coupled waveguide is subjected to displacement under described microdrive effect, and light is coupled in the coupled waveguide after flat wave-guide contacts.
A kind of optimal technical scheme is characterized in that: described substrate is straight rectangle cube.
A kind of optimal technical scheme is characterized in that: described flat wave-guide is bar shaped, and the xsect of described slab waveguide is a rectangle, and the radical of slab waveguide equals the columns of display picture element.
Described microdrive preferably has the transparent polymer of electrostriction function.
Compared with prior art, flat wave-guide display apparatus panel of the present utility model has following characteristics:
1) because flat wave-guide display apparatus panel simple in structure, it adopts the line scanning mode, pixel does not need active driving elements such as integrated thin-film transistor, electric capacity, does not need color filter or fluorescent powder etc., so can be easy to produce large-sized waveguide flat-panel monitor yet.
2) because flat wave-guide display apparatus panel adopts full solid-state device, do not have liquid crystal or discharge gas, so it is not subjected to low temperature effect, response speed is fast.Have flexible polymeric material if select for use, then flat wave-guide display apparatus can have good flexibility.
3) flat wave-guide display apparatus panel can place the light source of selecting for use the side of display, because dimension of light source is less to the pixel size impact, so the arbitrary source that can adopt the bigger light source of power or a plurality of luminous point to form, thereby the luminosity of raising light source.And, also can improve the luminosity of pixel because the area of pixel is far smaller than the light-emitting area of light source.In addition, the luminescence efficiency of flat wave-guide display apparatus is higher, and waveguide and coupling loss are less, and whole display energy consumption is low.
4) because flat wave-guide display apparatus panel can adopt low power semiconductor laser tube to make light source, and the optical maser wavelength that laser tube produced is single, and three colour purities are clean, so the rich color that shows.If flat wave-guide display apparatus adopts Organic Light Emitting Diode to make light source, then can avoid the difficulty that machining large-sized organic LED panel brings, and can produce the Organic Light Emitting Diode flat wave-guide display apparatus panel of giant-screen.
5) can be made into transparent display.
Below by the drawings and specific embodiments the utility model is described further, but and does not mean that restriction the utility model protection domain.
Description of drawings
Fig. 1 is the fundamental diagram of one of the utility model embodiment flat wave-guide display apparatus panel;
Fig. 2 is the fundamental diagram of two (not containing coupled waveguide) flat wave-guide display apparatus panel of the utility model embodiment;
Fig. 3 is the fundamental diagram of three flat wave-guide display apparatus panels of the utility model embodiment;
Fig. 4 is the fundamental diagram of Siping City's straight wave guide display pannel of the utility model embodiment;
Fig. 5 is one of the utility model embodiment electric light coupling planar waveguide display () structural representation;
Fig. 6 is one of the utility model embodiment electric light coupling slab waveguide display (a two) structural representation;
Fig. 7 is one of the utility model embodiment electric light coupling bar shaped conductive wave-guide display (a three) structural representation;
Fig. 8 is the structural representation of the two bar shaped electro-optical transducer displays of the utility model embodiment;
Fig. 9 is the structural representation of the three electric light coupling bar shaped electro-optical transducer display of the utility model embodiment;
Figure 10 is the structural representation of four little driving coupling slab waveguide displays of the utility model embodiment;
Figure 11 is one of the utility model embodiment, two, three the tectal structural representation of trapezoidal little rib;
Figure 12 is the structural representation of four the little rib reflection coupled waves sliver of the utility model embodiment.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing and embodiment.Described embodiment all is 1920mm*1080mm with the manufactured size, and resolution is that the panel of 1920*1080 carries out.
At first, the used light source assembly of the utility model comprises two kinds:
1, evenly distribute luminous
Light source is semiconductor laser tube, semiconductor light-emitting-diode, organic electroluminescence device or electroluminescent device, and redgreenblue light is divided into three rows, is integrated in the lens bar.Luminous counting (number of pipe) in the lens bar can be determined according to required brightness and luminous point watt level.
The lens bar is exported the dual mode that is coupled with of light and flat wave-guide:
(1) prism-coupled is that the light that the lens bar sends is injected flat wave-guide by prism.When flat wave-guide was selected glass, polymkeric substance for use, prism material was selected heavy flint glass for use, and refractive index is 2.009 (0.633 μ m).
When flat wave-guide was selected LiNO3, LiTaO3, ZnO, Si3N4 for use, prism material was selected TiO2 for use, and its refractive index is: n0=2.584, ne=2.872.Prism is done into strips, and length is consistent with the lens bar.
(2) grating coupling
Be that the light that the lens bar sends is injected flat wave-guide by grating.On glue film against corrosion, utilize conventional methods such as two-beam interference or electron beam direct write to make grating.
2, discrete alignment light emitting
Light source is semiconductor laser tube, semiconductor light-emitting-diode, organic luminescent device or electroluminescent device.Light source is integrated in the dimpling lens arra, the corresponding dimpling lens of each luminous point, and its output light is directional light.
The coupling of itself and flat wave-guide has dual mode equally: prism-coupled and grating coupling.
Secondly, circuit control mode comprises two kinds:
One, when display adopted even distribution luminous, display control circuit was: controller one end is connected with a preface circuit, and the other end is connected with sweep circuit; Sweep circuit connects the indicator screen scan electrode; Controller is to the synchronizing circuit output signal, and synchronizing circuit output connects the data electrode of indicator screen.
Its two, when display adopted discrete alignment light emitting mode, display control circuit is: controller was connected with sweep circuit, sweep circuit output connects the scan electrode of indicator screen; Controller is to the synchronizing circuit output signal, and the light source of indicator screen is controlled in synchronizing circuit output.
As shown in Figure 1, be the fundamental diagram of one of the utility model embodiment flat wave-guide display apparatus panel; This flat wave-guide display apparatus panel comprises overlayer 1, electric light coupled waveguide 2, flat wave-guide 3 and substrate 4.Described electric light coupled waveguide 2 is between described overlayer 1 and described flat wave-guide 3; Described substrate 4 is positioned at the opposite side of described flat wave-guide 3; Be provided with transparent scan electrode 5 between described coupled waveguide 2 and the described overlayer 1, be provided with transparent data electrode 6 between described coupled waveguide 2 and the described flat wave-guide 3, described transparent scan electrode 5 is vertical mutually with described transparent data electrode 6; Described overlayer 1 is trapezoidal little rib transmission layer (being trapezoidal little rib overlayer).The critical angle that the light total reflection is propagated in the flat wave-guide 3 is to be determined by the refractive index of coupled waveguide 2, flat wave-guide 3 and substrate 4, and the refractive index of described flat wave-guide 3 is greater than the refractive index of described substrate 4 and described electric light coupled waveguide 2; By calculating the critical angle of light, selected on this basis angle of incidence of light, incident angle is greater than critical angle.When scanning voltage signal is chosen position shown in the figure, it is big that the refractive index of coupled waveguide 2 herein or propagation constant become, make the critical angle that the light total reflection is propagated in the flat wave-guide become big in this position, propagate light so far because incident angle causes light to produce refraction or coupling in the position herein less than critical angle, thereby light enters coupled waveguide, the light that overlayer 1 with trapezoidal little rib will enter this layer transmits with the direction perpendicular to aspect, makes this position become luminous point.
As shown in Figure 2, be the fundamental diagram of two flat wave-guide display apparatus panels of the utility model embodiment; This planar waveguide display pannel comprises overlayer 1, transparent scan electrode 5, electric light flat wave-guide 3, data electrode 6 and substrate 4.Described transparent scan electrode 5 is between described electric light flat wave-guide 3 and described overlayer 1; Described data electrode 6 can be transparency electrode or metallic reflection electrode, uses transparency electrode can make the transparent display panel, and it is between described electric light flat wave-guide 3 and described substrate 4, and described transparent scan electrode 5 is mutual vertical with described data electrode 6.The flat wave-guide that transparent material constituted of described electric light flat wave-guide 3 for having the electric light function, its refractive index changes behind the making alive; Described overlayer 1 is trapezoidal little rib transmission layer.The critical angle that the light total reflection is propagated in the electric light flat wave-guide 3 is to be determined by the refractive index of overlayer 1, electric light flat wave-guide 3 and substrate 4, the refractive index of described electric light flat wave-guide 3 is greater than the refractive index of described overlayer 1 and described substrate 4, and the refractive index of described overlayer 1 is greater than the refractive index of described substrate 4; By calculating the critical angle of light, selected on this basis angle of incidence of light, incident angle is greater than critical angle.When signal voltage is chosen position shown in the figure, the refractive index of this locational electric light flat wave-guide reduces, make the critical angle that the light total reflection is propagated in the electric light flat wave-guide become big in this position, in the electric light flat wave-guide, do light that total reflection propagates in this locational incident angle less than critical angle, therefore light reflects on this position, because the refractive index of overlayer 1 is greater than the refractive index of substrate 4, guarantee that light can not enter substrate 4, light refraction enters overlayer 1, the light that overlayer 1 with trapezoidal little rib will enter this layer transmits with the direction perpendicular to aspect, makes this position become luminous point.
As shown in Figure 3, be the fundamental diagram of three flat wave-guide display apparatus panels of the utility model embodiment; This flat wave-guide display apparatus panel comprises overlayer 1, electric light coupled waveguide 2, electric light flat wave-guide 3 and substrate 4.Described electric light coupled waveguide 2 is between described overlayer 1 and described electric light flat wave-guide 3; Described substrate 4 is positioned at the opposite side of described electric light flat wave-guide 3; The flat wave-guide that transparent material constituted of described electric light flat wave-guide 3 for having the electric light function, its refractive index changes behind the making alive; Be provided with transparent scan electrode 5 between described coupled waveguide 2 and the described overlayer 1, be provided with transparent data electrode 6 between described coupled waveguide 2 and the described electric light flat wave-guide 3; Be provided with transparent scan electrode 7 between described electric light flat wave-guide 3 and the described substrate 4; Described transparent scan electrode 5 is relative with described transparent scan electrode 7, consistent size; Described transparent scan electrode 5,7 is vertical mutually with described transparent data electrode 6; Described overlayer 1 is trapezoidal little rib transmission layer.The critical angle that the light total reflection is propagated in the electric light flat wave-guide 3 is to be determined by the refractive index of electric light coupled waveguide 2, electric light flat wave-guide 3 and substrate 4, the refractive index of described electric light flat wave-guide 3 is greater than the refractive index of described substrate 4 and described electric light coupled waveguide 2, and the refractive index of described electric light coupled waveguide 2 is greater than the refractive index of described substrate 4; By calculating the critical angle of light, selected on this basis angle of incidence of light, incident angle is greater than critical angle.When scanning voltage signal is chosen position shown in the figure, it is big that the refractive index of coupled waveguide 2 herein or propagation constant become, and the refractive index of electric light flat wave-guide 3 or propagation constant diminish, make the critical angle that the light total reflection is propagated in the electric light flat wave-guide become big in this position, propagate light so far because incident angle causes light to produce refraction or coupling in the position herein less than critical angle, because the refractive index of electric light coupled waveguide 2 is greater than the refractive index of substrate 4, guarantee that light can not enter substrate 4, thereby light enters coupled waveguide, the light that overlayer 1 with trapezoidal little rib will enter this layer transmits with the direction perpendicular to aspect, makes this position become luminous point.
As shown in Figure 4, be the fundamental diagram of Siping City's straight wave guide display pannel of the utility model embodiment; Comprise overlayer 1, flat wave-guide 3, coupled waveguide 2, microdrive support plate 7 and microdrive 8, electrode 5; Described coupled waveguide 2 and has a gap between described coupled waveguide 2 and the described flat wave-guide 3 between described flat wave-guide 3 and described microdrive 8; Be provided with microdrive 8 between described coupled waveguide 2 and the described microdrive support plate 7, described coupled waveguide 2 is little rib reflecting surface with the adhesive surface of described microdrive 8.The critical angle that the light total reflection is propagated in the flat wave-guide 3 is to be determined by the refractive index of overlayer 1, flat wave-guide 3 and microdrive support plate 7, by calculating the critical angle of light, and selected on this basis angle of incidence of light, incident angle is greater than critical angle.Light is done total reflection and is propagated in flat wave-guide 3, microdrive 8 makes coupled waveguide 2 contact with flat wave-guide 3 under the voltage effect, because the refractive index of described coupled waveguide 2 is greater than the refractive index of overlayer 1 and microdrive support plate 7, make the critical angle of flat wave-guide 3 become big in this position, in flat wave-guide 3, do light that total reflection propagates in this locational incident angle less than critical angle, after light refraction enters little rib reflector layer of coupled waveguide 2, light is reflected with the direction perpendicular to aspect, makes this position become luminous point.
As shown in Figure 5, be one of the utility model embodiment electric light coupling planar waveguide display () structural representation; Comprise overlayer 1, electric light coupled waveguide 2, plate flat wave-guide 3, light source assembly 9 and substrate 4; Described electric light coupled waveguide 2 is between described overlayer 1 and described plate flat wave-guide 3; Described substrate 4 is positioned at the opposite side of described plate flat wave-guide 3; The refractive index of selected plate flat wave-guide 3 is greater than the refractive index of substrate 4 and electric light coupled waveguide 2; Be provided with transparent scan electrode 5 between described coupled waveguide 2 and the described overlayer 1, be provided with transparent data electrode 6 between described coupled waveguide 2 and the described plate flat wave-guide 3; Described overlayer 1 is trapezoidal little rib transmission layer.Light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, plate flat wave-guide and substrate
Choose thick 1mm, length and width 1950mm * 1100mm, refractive index is that 1.47 float glass is as substrate; Choose thick 0.12mm, length and width 1950mm * 1100mm, refractive index is that 1.6 float glass is as plate flat wave-guide; With refractive index is that 1.34 fluorine-containing alicyclic ring polymkeric substance optical cement is bonded together the two.
2, data electrode
On plate flat wave-guide, make 1920 ITO transparent data electrodes 6 with sputtering method, strip width 0.99mm, long 1100mm, thick 0.1 μ m, interspace 10 μ m, refractive index is 1.85.
3, the preparation of electric light coupled waveguide
The electrooptical material polymethylmethacrylate is dissolved in the polar solvent, forms the electric light coupling waveguide layer of a bed thickness 5 μ m with spin coating method on data electrode Y6, refractive index is 1.492; For improving electro-optical properties, the electric light coupled waveguide is polarized with the corona polarizing method.
4, scan electrode
On the direction vertical, go out 1080 transparent scan electrodes 5 of ITO in the surface preparation of electric light coupled waveguide with sputtering method with data electrode, strip width 0.99mm, long 1950mm, thick 0.1 μ m, interspace 10 μ m, refractive index is 1.85.
5, overlayer
Choose refractive index and be 1.6 glass, make thick 0.15mm in the casting mode, trapezoidal little rib overlayer of length and width 1950mm * 1100mm is seen accompanying drawing 11, and trapezoidal little rib both sides interior angle is respectively 125 ° and 20 °, and following bottom width is 0.25mm; With refractive index is that 1.555 epoxy resin optical cement is bonded in it on scan electrode.
Two, light source assembly
Adopt the uniformly light-emitting mode, light source is a semiconductor laser diode.The luminous red, green, blue of counting is respectively 1920 points in the lens bar, and every luminous power is 5mw.The input of employing prism-coupled, the incident angle of light in flat wave-guide is 70 ° ± 1 °.
Three, control circuit
Control circuit adopts first kind of mode.The RGB light source inserts a preface circuit output end respectively; Synchronizing circuit is exported the data electrode 6 corresponding connections with display pannel, and sweep circuit is exported the scan electrode 5 corresponding connections with panel, the about 15V of sweep signal high level.Frame frequency is 100Hz, and line-scanning frequency is 100 * 1080=10800Hz.This row was selected when scan electrode 5 was high level, and pixel was luminous when data electrode 6 was low level.
As shown in Figure 6, be the structural representation of one of the utility model embodiment electric light coupling slab waveguide display (two); Comprise overlayer 1, electric light coupled waveguide 2, bar shaped flat wave-guide 3, light source assembly 9 and substrate 4; Described electric light coupled waveguide 2 is between described overlayer 1 and described bar shaped flat wave-guide 3; Described substrate 4 is positioned at the opposite side of described bar shaped flat wave-guide 3; The refractive index of selected bar shaped flat wave-guide 3 is greater than the refractive index of electric light coupled waveguide 2 and substrate 4; Be provided with transparent scan electrode 5 between described coupled waveguide 2 and the described overlayer 1, be provided with transparent data electrode 6 between described coupled waveguide 2 and the described bar shaped flat wave-guide 3; Described overlayer 1 is trapezoidal little rib transmission layer; Described light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, bar shaped flat wave-guide and substrate
Choose thick 1mm, length and width 1950mm * 1100mm, refractive index is that 1.47 float glass is as substrate; Choose thick 0.12mm, length and width 1950mm * 1100mm, refractive index is that 1.6 float glass is as bar shaped flat wave-guide substrate; With refractive index is that 1.34 fluorine-containing alicyclic ring polymkeric substance optical cement is bonded together the two.Is that 1.85 ITO is deposited on the bar shaped flat wave-guide substrate with sputtering method or cladding process with refractive index, forms the thick transparent electrode layer of 0.1 μ m.On transparent electrode layer and bar shaped flat wave-guide substrate, make 1920 wide 0.99mm with etching method, long 1100mm, thick 0.15 μ m, the gap is bar shaped flat wave-guide 3 and the transparent data electrode 6 of 10 μ m between bar.With refractive index is that 1.41 polymethylacrylic acid trifluoro ethyl ester is dissolved in the polar solvent, with spin coating method it is filled in the flat wave-guide interspace, behind the evaporating solvent gap is filled and led up.
2, electric light coupled waveguide and scan electrode
After the polymer poly methyl methacrylate that will have an electric light function is dissolved in polar solvent, produce the electric light coupling waveguide layer that a layer thickness is 5 μ m with spin coating method on transparency electrode, refractive index is 1.492; For improving electro-optical properties, the electric light coupled waveguide is polarized with the corona polarizing method.
On direction, on the surface of electric light coupled waveguide, make 1080 wide 0.99mm with sputtering method or cladding process, long 1950mm, thick 0.1 μ m, the transparent scan electrode 5 of the ITO of interspace 10 μ m perpendicular to transparent data electrode 6.
3, overlayer
Choose refractive index and be 1.6 glass, make thick 0.15mm in the casting mode, trapezoidal little rib overlayer of length and width 1950mm * 1100mm is seen accompanying drawing 11, and trapezoidal little rib both sides interior angle is respectively 125 ° and 20 °, and following bottom width is 0.25mm; With refractive index is that 1.555 epoxy resin optical cement is bonded in it on scan electrode.
Two, light source assembly
Present embodiment both can adopt the uniformly light-emitting mode; Also can adopt discrete alignment light emitting mode.Be respectively described below:
1, luminous (power supply the is positioned at panel one end) light source that evenly distributes is a semiconductor laser tube, and the luminous red, green, blue of counting is respectively 1920 points in the lens bar, and every luminous power is 5mw.Adopt grating coupling input, the incident angle of light in flat wave-guide is 70 ° ± 1 °.
2, discrete alignment light emitting
Light source is a semiconductor laser tube, and the red, green, blue three look semiconductor laser tube numbers in the lens arra are respectively 1920, and the power of single semiconductor laser tube is 5mw.Adopt grating coupling input, the incident angle of light in slab waveguide is 70 ° ± 1 °.
Three, control circuit
1, adopt the luminous control circuit control circuit that evenly distributes to adopt first kind of mode.The RGB light source inserts a preface circuit output end respectively; Synchronizing circuit is exported the data electrode 6 corresponding connections with display pannel, and sweep circuit is exported the scan electrode 5 corresponding connections with panel, and the signal high level is 15V.Frame frequency is 100Hz, and line-scanning frequency is 100 * 1080=10800Hz.This row was selected when scan electrode 5 was high level, and pixel was luminous when data electrode 6 was low level.
2, adopt the control circuit control circuit of discrete alignment light emitting to adopt the second way.The corresponding semiconductor laser diode that connects of synchronizing circuit output, the corresponding scan electrode 5 that connects on the panel of sweep circuit output, data electrode 6 connects low level, and the scan electrode high level is 15V, and this row was selected when scan electrode 5 was high level.Frame frequency is 100Hz, and sweep frequency is 100 * 1080=10800Hz.
As shown in Figure 7, be the structural representation of one of the utility model embodiment electric light coupling bar shaped conductive wave-guide display (three); Comprise overlayer 1, electric light coupled waveguide 2, bar shaped conduction flat wave-guide 3, light source assembly 9 and substrate 4; Described electric light coupled waveguide 2 is between described overlayer 1 and described bar shaped conduction flat wave-guide 3; Described substrate 4 is positioned at the opposite side of described bar shaped conduction flat wave-guide 3; Be provided with transparent scan electrode 5 between described coupled waveguide 2 and the described overlayer 1, be provided with data electrode 6 between described substrate 4 and the described bar shaped conduction flat wave-guide 3; The refractive index of selected bar shaped conduction flat wave-guide 3 is greater than the refractive index of electric light coupled waveguide 2 and substrate 4; Described overlayer 1 is trapezoidal little rib transmission layer; Described light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, substrate and electrode
It is thick to choose 1mm, length and width 1950mm * 1100mm, and refractive index is 1.47 float glass, makes the ito transparent electrode of thick 0.1 μ m in its surface with sputtering method or cladding process.
2, bar shaped conductive wave-guide is made
After the transparent material polystyrene that will have a conducting function is dissolved in polar solvent, on plane electrode, form the plasticon of 0.1mm with spin coating method; With machine cuts or etching method this layer film being made the slivering number is 1920, and bar is wide to be 0.99mm, and interspace is 10 μ m, and refractive index is 1.591 bar shaped conductive wave-guide 3 and data electrode 6.
3, fill in the waveguide gap
With refractive index is that 1.41 polymethylacrylic acid trifluoro ethyl ester is dissolved in polar solvent, with spin coating method the polymethylacrylic acid trifluoro ethyl ester is filled in the gap of slab waveguide, behind the evaporating solvent gap is filled and led up.
4, electric light coupled waveguide and scan electrode
After the transparent material polymethylmethacrylate that will have an electric light function is dissolved in polar solvent, produce the electric light coupling waveguide layer that a layer thickness is 5 μ m with spin coating method on the bar shaped conductive wave-guide, refractive index is 1.492; For improving electro-optical properties, the electric light coupled waveguide is polarized with the corona polarizing method.With machine cuts or etching method this layer electric light coupled waveguide film being made the slivering number perpendicular to the direction of bar shaped conductive wave-guide is 1080, wide 0.99mm, long 1950mm, the electric light coupled waves sliver of interspace 10 μ m.
On the surface of electric light coupled waves sliver, make the transparent scan electrode 5 of ITO of thick 0.1 μ m with sputtering method or cladding process.
5, overlayer
Choose refractive index and be 1.6 glass, make thick 0.15mm in the casting mode, trapezoidal little rib overlayer of length and width 1950mm * 1100mm is seen accompanying drawing 11, and trapezoidal little rib both sides interior angle is respectively 125 ° and 20 °, and following bottom width is 0.2mm; With refractive index is that 1.555 epoxy resin optical cement is bonded in it on scan electrode 5.
Two, light source assembly is made
Adopt discrete alignment light emitting mode (power supply module 9 is positioned at display panel one side):
Three, control circuit
Control circuit adopts the second way.Synchronizing circuit output and corresponding connections of laser tube in the lens arra, sweep circuit is exported the scan electrode on the correspondence connection panel, and the sweep signal high level is 20V, and data electrode 6 connects low level.Frame frequency is 100Hz, and line-scanning frequency is 100 * 1080=10800Hz.
As shown in Figure 8, be the structural representation of the two bar shaped electric light flat wave-guide display apparatus of the utility model embodiment; This electric light flat wave-guide display apparatus panel is followed successively by little rib overlayer 1, the transparent scan electrode 5 of ITO, electric light slab waveguide 3, data electrode 6, substrate 4 from top to bottom.The transparent scan electrode 5 of described ITO is between described electric light slab waveguide 3 and described little rib overlayer 1, and described data electrode 6 is between described electric light slab waveguide 3 and described substrate 4.The refractive index of selected electric light slab waveguide 3 is greater than the refractive index of little rib overlayer 1 and substrate 4; And the refractive index of selected little rib overlayer 1 is greater than the refractive index of substrate 4.Light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, substrate and electrode
It is thick to choose 1mm, length and width 1950mm * 1100mm, and refractive index is that 1.44 float glass is as substrate 4, produce layer of transparent electrode ito thin film with sputtering method on substrate 4 surfaces, the thick 0.1 μ m of film, refractive index is 1.85, this transparency electrode is a data electrode 6, as public electrode.
2, the bar shaped electro-optical transducer is made
After the polymer poly carbonic ester that will have an electric light function is dissolved in polar solvent, on plane electrode, form the polycarbonate film of 0.1mm with spin coating method; In polycarbonate glass temperature district with the corona polarization method to the processing that polarizes of this layer film; With etching method this layer film being made the slivering number is 1920, and bar is wide to be 0.99mm, and interspace is 10 μ m, and refractive index is 1.586 bar shaped electro-optical transducer.
3, fill in the waveguide gap
With refractive index is that 1.41 polymethylacrylic acid trifluoro ethyl ester is dissolved in polar solvent, with spin coating method the polymethylacrylic acid trifluoro ethyl ester is filled in the gap of slab waveguide, behind the evaporating solvent gap is filled and led up.
4, scan electrode
Produce layer of transparent electrode ito thin film with sputtering method on bar shaped electro-optical transducer surface, the thick 0.1 μ m of film, refractive index is 1.85.
Make scan electrode 5 with etching method on transparent electrode layer, scan electrode is perpendicular to slab waveguide, and the scan electrode number is 1080, and the wide 0.99mm of electrode, long 1950mm, electrode gap are 10 μ m.
5, overlayer
Choose refractive index and be 1.492 transparent material polymethylmethacrylate and be dissolved in polar solvent, on the bar shaped conductive wave-guide, produce the overlayer that a layer thickness is 0.15mm with spin coating method, on overlayer, extrude trapezoidal little rib, see accompanying drawing 11, the both sides interior angle is respectively 129 ° and 13 °, and following bottom width is 0.2mm.
Two, the making of light source assembly 9
Adopt discrete alignment light emitting mode (power supply is positioned at panel one end):
Light source is a semiconductor laser tube, and red, green, blue three look laser tube numbers are respectively 1920 points, and the power of single semiconductor laser tube is 5mw.The input of employing prism-coupled, the incident angle of light in slab waveguide is 71 ° ± 1 °.
Three, control circuit
Control circuit adopts the second way.Synchronizing circuit output and corresponding connections of laser tube in the lens arra, sweep circuit is exported the scan electrode 5 on the correspondence connection panel, and the sweep signal high level is 30V, and data electrode 6 connects low level.Frame frequency is 100Hz, and line-scanning frequency is 100 * 1080=10800Hz.
As shown in Figure 9, be the structural representation of three electric light of the utility model embodiment coupling bar shaped electro-optical transducer display; This flat wave-guide display apparatus panel is followed successively by little rib overlayer 1, transparent scan electrode 5, electric light coupled waveguide 2, transparent data electrode 6, electric light flat wave-guide 3, transparent scan electrode 7 and substrate 4 from top to bottom.Described transparent scan electrode 5 is relative with described transparent scan electrode 7, consistent size.The refractive index of selected electric light flat wave-guide 3 is greater than the refractive index of substrate 4 and electric light coupled waveguide 2; The refractive index of selected electric light coupled waveguide 2 is greater than the refractive index of substrate 4; Described overlayer 1 is trapezoidal little rib transmission layer.Light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, substrate, scan electrode, bar shaped electric light flat wave-guide and data electrode
Choose thick 1mm, length and width 1950mm * 1100mm, refractive index is that 1.47 float glass is as substrate; With refractive index is that 1.41 polymethylacrylic acid trifluoro ethyl ester is dissolved in the polar solvent, with spin coating method it is coated on the substrate, forms the substrate 4 of thick 10 μ m behind the evaporating solvent.Is that 1.85 ITO is deposited on the substrate 4 with sputtering method or cladding process with refractive index, forms the thick transparent electrode layer of 0.1 μ m, makes 1080 wide 0.99mm with etching method on transparent electrode layer, and long 1950mm, interspace are the transparent scan electrode 7 of 10 μ m.After the polymer poly carbonic ester that will have an electric light function is dissolved in polar solvent, on transparent scan electrode 7, form the polycarbonate film of 0.1mm with spin coating method, in polycarbonate glass temperature district with the corona polarization method to the processing that polarizes of this layer film; Is that 1.85 ITO is deposited on the polycarbonate film with sputtering method or cladding process with refractive index, forms the thick transparent electrode layer of 0.1 μ m; Is 1920 with etching method with transparent electrode layer and polycarbonate film layer making slivering number, and bar is wide to be 0.99mm, and interspace is 10 μ m, and refractive index is 1.586 bar shaped electric light flat wave-guide 3 and transparent data electrode 6.With refractive index is that 1.41 polymethylacrylic acid trifluoro ethyl ester is dissolved in the polar solvent, with spin coating method it is filled in the interspace of bar shaped electric light flat wave-guide bar and transparent data electrode 6, behind the evaporating solvent gap is filled and led up.
2, electric light coupled waveguide and scan electrode
After the polymer poly methyl methacrylate that will have an electric light function is dissolved in polar solvent, produce the electric light coupling waveguide layer that a layer thickness is 5 μ m with spin coating method on transparency electrode, refractive index is 1.492; For improving electro-optical properties, the electric light coupled waveguide is polarized with the corona polarizing method.
On direction, on the surface of electric light coupled waveguide, make 1080 wide 0.99mm with sputtering method or cladding process, long 1950mm, thick 0.1 μ m, the transparent scan electrode 5 of the ITO of interspace 10 μ m perpendicular to data electrode 6.
3, overlayer
Choose refractive index and be 1.6 glass, make thick 0.15mm in the casting mode, trapezoidal little rib overlayer of length and width 1950mm * 1100mm is seen accompanying drawing 11, and trapezoidal little rib both sides interior angle is respectively 123 ° and 24 °, and following bottom width is 0.2mm; With refractive index is that 1.555 epoxy resin optical cement is bonded in it on scan electrode.
Two, light source assembly
Adopt discrete alignment light emitting mode:
Light source is a semiconductor laser tube, and red, green, blue three look laser tube numbers are respectively 1920 points, and the power of single semiconductor laser tube is 5mw.The input of employing prism-coupled, the incident angle of light in slab waveguide is 71 ° ± 1 °.
Three, control circuit
Control circuit adopts the second way.Synchronizing circuit output and corresponding connections of laser tube in the lens arra, sweep circuit is exported the scan electrode 5 on the correspondence connection panel, and data electrode 6 connects low level, and the sweep signal high level is 15V.Frame frequency is 100Hz, and line-scanning frequency is 100 * 1080=10800Hz.
If selecting the sweep signal high level is 8V, low level is-8V, data electrode 6 connects 0 level, insert the selected row of behavior of high level, selected line is not owing to added reversed electric field, the refractive index that makes coupled waveguide diminishes and the refractive index of bar shaped electric light flat wave-guide becomes big, and the incident angle of light in bar shaped shape electric light flat wave-guide is 66 ° ± 1 ° in this case.
As shown in figure 10, be the structural representation of the four little drivings coupling slab waveguide displays of the utility model embodiment; Described panel is followed successively by overlayer 1, bar shaped flat wave-guide 3, coupled waveguide 2, electrode 5, microdrive (electrostriction material) 8, microdrive support plate 7 from top to bottom; Described coupled waveguide 2 and has a gap between described coupled waveguide 2 and the described bar shaped flat wave-guide 3 between described bar shaped flat wave-guide 3 and described microdrive 8; Be provided with microdrive 8 between described coupled waveguide 2 and the described microdrive support plate 7; Described coupled waveguide 2 is little rib reflecting surface with the adhesive surface of described microdrive 8; Be provided with electrode 5 between microdrive 8 and the described coupled waveguide 2, be provided with microdrive electrode 5 between described microdrive 8 and the described microdrive support plate 7.The refractive index of selected bar shaped flat wave-guide 3 is greater than the refractive index of overlayer 1 and microdrive support plate 7, light is done total reflection and is propagated in bar shaped flat wave-guide 3, described microdrive 8 makes coupled waveguide 2 contact with flat wave-guide 3 under the voltage effect, the refractive index of coupled waveguide 2 is greater than the refractive index of overlayer 1 and microdrive support plate 7, light refraction enters coupled waveguide 2, after arriving little rib reflective surface, light is reflected with the direction perpendicular to aspect, makes this position become luminous point.Light source assembly 9 is positioned at a side of display panel.
One, panel is made
1, bar shaped flat wave-guide
Choose thick 1mm, length and width 1950mm * 1100mm, refractive index is that 1.47 float glass is as overlayer; With refractive index is that 1.586 polycarbonate is dissolved in the polar solvent, produces the ducting layer of 0.12mm on the glass overlayer with spin coating method.Make 1920 with etching method on this ducting layer, wide 0.99mm, long 1100mm, interspace are the bar shaped flat wave-guide 3 of 10 μ m.
2, microdrive support plate
Make the microdrive support plate in the casting mode, supporting thickness of slab 1mm, length and width 1950mm * 1100mm, refractive index is 1.47, on its one side 1080 grooves is arranged, groove width 0.9mm, long 1950mm, dark 0.6mm, groove is wide 0.1mm at interval.
3, microdrive
Produce the aluminium electrode 5 of 0.2 μ m with sputtering method at the trench bottom of microdrive support plate, the electrostrictive polymers PVDF that will be dissolved in polar solvent then is cast in the groove, and thickness is 0.4mm, with the corona polarizing method PVDF is polarized; Sputtered aluminum electrode 5 on the PVDF surface, thick 0.2 μ m; Is that 2 of coupled waveguides of the little rib reflection of 1.591 polystyrene are bonded on the aluminium electrode with fluorine-containing alicyclic ring polymkeric substance optical cement with refractive index, the structure of little rib reflection coupled waves sliver is seen accompanying drawing 12, the cross section of little rib reflection coupled waves sliver is a triangle, sputtered aluminum reflection horizon on the little faceted pebble of triangle, the leg-of-mutton light incident length of side is 0.45mm, two interior angles as common edge are respectively 34 ° and 22 °, and little rib reflection coupled waves sliver is thick to be 0.15mm, and the displacement of microdrive is about 10 μ m.
4, bonding
With refractive index is that 1.34 fluorine-containing alicyclic ring polymkeric substance optical cement is applied on the interval of microdrive support plate, then that itself and 3 of bar shaped flat wave-guides is bonding.
Two, light source assembly
Adopt discrete alignment light emitting mode (power supply is positioned at panel one end):
Light source is a semiconductor laser tube, and red, green, blue three look laser tube numbers are respectively 1920 points, and the power of single semiconductor laser tube is 5mw.The input of employing prism-coupled, the incident angle of light in slab waveguide is 69 ° ± 1 °.
Three, control circuit
Control circuit adopts the second way.Synchronizing circuit output and corresponding connections of laser tube in the lens arra, sweep circuit is exported the scan electrode on the correspondence connection panel, and the sweep signal high level is 40V.Frame frequency is 100Hz, and sweep frequency is 100 * 1080=10800Hz.
No matter need to prove, be planar waveguide or slab waveguide, and its maximum thickness is all determined by the size of pixel.Pixel Dimensions is more little, needs waveguide thin more.Under the prerequisite that guarantees the light total reflection, primary event takes place in light at least on each pixel, reduces duct thickness and can increase order of reflection, but cross the loss that multiple reflection can strengthen light.All be designed to 2 secondary reflections in an embodiment.In order to enlarge angular field of view, also should before panel, add a diffuse scattering film viewing screen, but this is a known technology in the industry, so the utility model is not mentioned.
Flat wave-guide display apparatus of the present utility model is a passive matrix.Although there is the dutycycle problem, flat wave-guide display apparatus of the present utility model can solve the difficult problem of the brightness decline that brings thus.This is because the light that (1) light source sends is not to be evenly distributed on all pixels, but is focused on the pixel of selected row, does not have the waste of light, as long as the power of light source is enough, the brightness of panel just can guarantee; (2) light source places the display side, and dimension of light source is less to the pixel size impact, therefore can adopt the bigger light source of power, also can adopt a plurality of luminous points to form arbitrary source, makes the luminosity of light source reach requirement; (3) elemental area is much smaller than the light source luminescent area, and this has improved the luminosity of pixel virtually.
Claims (9)
1, a kind of flat wave-guide display apparatus panel is characterized in that: comprise flat wave-guide and overlayer, described overlayer is positioned at a side of described flat wave-guide.
2, flat wave-guide display apparatus panel according to claim 1 is characterized in that: also comprise substrate and coupled waveguide, described coupled waveguide is between described overlayer and described flat wave-guide; Described substrate is positioned at the opposite side of described flat wave-guide; Described coupled waveguide is an electro-optical transducer; The both sides of described coupled waveguide are provided with transparency electrode.
3, flat wave-guide display apparatus panel according to claim 2 is characterized in that: described flat wave-guide is the electric light flat wave-guide; The both sides of described electric light flat wave-guide are provided with transparency electrode.
4, flat wave-guide display apparatus panel according to claim 2 is characterized in that: also comprise substrate, described flat wave-guide is the electric light flat wave-guide; The both sides of described electric light flat wave-guide are provided with transparency electrode.
5, flat wave-guide display apparatus panel according to claim 1 is characterized in that: also comprise coupled waveguide, microdrive support plate and microdrive; Described coupled waveguide and has a gap between described coupled waveguide and the described flat wave-guide between described flat wave-guide and described microdrive; Be provided with microdrive between described coupled waveguide and the described microdrive support plate, the adhesive surface of described coupled waveguide and described microdrive is little rib reflecting surface.
6, flat wave-guide display apparatus panel according to claim 3 is characterized in that: described flat wave-guide and coupled waveguide are straight rectangle cube.
7, flat wave-guide display apparatus panel according to claim 5 is characterized in that: described microdrive is static, electromagnetism, electrostriction or magnetostriction drive form.
8, according to each described flat wave-guide display apparatus panel in the claim 2,3,4,6, it is characterized in that: described substrate is straight rectangle cube.
9, according to each described flat wave-guide display apparatus panel in the claim 3,4,5,6,7, it is characterized in that: described flat wave-guide is bar shaped, and the xsect of described slab waveguide is a rectangle, and the radical of slab waveguide equals the columns of display picture element.
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| CN 200620119441 CN200944140Y (en) | 2006-09-08 | 2006-09-08 | Straight waveguide display panel |
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| CN 200620119441 CN200944140Y (en) | 2006-09-08 | 2006-09-08 | Straight waveguide display panel |
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| US11747568B2 (en) | 2019-06-07 | 2023-09-05 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
| US11681143B2 (en) | 2019-07-29 | 2023-06-20 | Digilens Inc. | Methods and apparatus for multiplying the image resolution and field-of-view of a pixelated display |
| US11592614B2 (en) | 2019-08-29 | 2023-02-28 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11442222B2 (en) | 2019-08-29 | 2022-09-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11899238B2 (en) | 2019-08-29 | 2024-02-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
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