CN102162936B - display assembly - Google Patents
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- CN102162936B CN102162936B CN201110029892.4A CN201110029892A CN102162936B CN 102162936 B CN102162936 B CN 102162936B CN 201110029892 A CN201110029892 A CN 201110029892A CN 102162936 B CN102162936 B CN 102162936B
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- coloured light
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- optical waveguide
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
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Abstract
A display module includes a display substrate, an optical waveguide, a grating, and a first light emitting module. The display substrate has a plurality of light channels and a light incident side. The optical channels are parallel to each other and form a plurality of display pixels arranged in an array, wherein each optical channel is provided with an inlet positioned at the light inlet side of the display substrate. The light guide is arranged on the light incident side of the display substrate. The grating is arranged on the optical waveguide. The first light-emitting component provides first light. The first light enters the optical waveguide and is emitted to the light incident side of the display substrate after passing through the grating. The first light is diffracted into a plurality of first group of color lights which are emitted along different angles and have different wavelengths after passing through the grating. The first group of color lights comprise a plurality of lights with different wavelengths, and the lights with different wavelengths respectively enter the corresponding light channels to be used as light sources of the display pixels.
Description
[technical field]
The invention relates to a kind of display module, and relate to especially a kind of display module of Autoluminescence.
[background technology]
Existing display module comprises that display base plate, multiple sets of light sources module and multiple microwave lead.The light that light source module sends in display base plate, there are multiple optical channels that are arranged in parallel with each other, leads and aim at respectively corresponding optical channel by each microwave, so that can be led and is coupled to respectively in these corresponding optical channels by each microwave.In addition, under the optical channel of display base plate, dispose drive electrode, these drive electrodes can make the refraction index changing with the medium of optical path connection.So, the total reflection of light just can be destroyed in optical channel, and by the exiting surface outgoing of display base plate, and then reach the effect of demonstration.
But in the prior art, the light that light source module sends need lead to be coupled in optical channel by the microwave of aiming at optical channel, wherein microwave is led the precision of aiming at optical channel and can seriously have influence on light and be coupled to the efficiency of optical channel.In other words, requiring of its assembling precision of existing display module is high, and the complicacy of its assembling is increased.In addition, for showing full-color picture, existing display module need adopt multiple sets of light sources module, and this design also makes the material cost of existing display module higher.Hold above-mentionedly, how to develop the display module of a kind of assembling precision requirement lower (assembling complicacy is lower), desire most ardently one of target of reaching for current developer in fact.
[summary of the invention]
The invention provides a kind of display module, the assembling precision of this display module requires lower (assembling complicacy is lower).
The invention provides another kind of display module, the assembling precision of this display module requires also lower (assembling complicacy is lower).
The present invention proposes a kind of display module, and this display module comprises display base plate, optical waveguide, grating and the first luminescence component.Display base plate has multiple optical channels and light inlet side.Optical channel is parallel to each other and jointly forms multiple demonstration picture elements that array configures, and wherein each optical channel has the entrance that is positioned at display base plate light inlet side.Optical waveguide is arranged at the light inlet side of display base plate.Grating is arranged in optical waveguide.The first luminescence component provides the first light.The first light enter optical waveguide and after grating outgoing to the light inlet side of display base plate.The first light by grating after diffraction become multiple along different angles outgoing and there is first group of coloured light of different wave length.First group of coloured light comprises the light of multiple different wave lengths, and the light of these different wave lengths enters respectively corresponding optical channel, using the light source as showing picture element.
The present invention proposes another kind of display module, and this display module comprises display base plate and multiple light source module.Display base plate has multiple optical channels and light inlet side.Optical channel is parallel to each other and jointly forms multiple demonstration picture elements that array configures.Each optical channel has the entrance that is positioned at this display base plate light inlet side.Each light source module comprises optical waveguide, grating and luminescence component.Optical waveguide is arranged at the light inlet side of display base plate.Grating is arranged in optical waveguide.Luminescence component provides monochromatic light to enter optical waveguide.Monochromatic light enter optical waveguide and after grating outgoing to the light inlet side of display base plate.The luminescence component of different light source modules provides the light of different wave length, becomes the multiple coloured light along different angles outgoing with diffraction after by each self-corresponding grating, and these coloured light enter corresponding optical channel using the light source as showing picture element.
Based on above-mentioned, in display module of the present invention, the light diffraction that luminescence component can be sent by the grating being arranged in optical waveguide becomes along different angles outgoing and has many groups coloured light of different wave length.Because of the light in same group of coloured light parallel to each other, so in the time that optical waveguide (or grating) is subjected to displacement in the direction vertical with optical channel bearing of trend with the light inlet side at optical channel entrance place, light is coupled to that the efficiency of optical channel is unlikely is subject to serious impact.In other words, display module of the present invention is by above-mentioned grating, and the requirement of its assembling precision can be effectively reduced, and makes display module of the present invention be easy to assembling.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
[brief description of the drawings]
Fig. 1 is the display module schematic diagram of first embodiment of the invention.
Fig. 2 is the display module schematic diagram of one embodiment of the invention.
The grating diagrammatic cross-section that Fig. 3, Fig. 4, Fig. 6, Fig. 7 are one embodiment of the invention.
Fig. 5 looks schematic diagram on the grating of one embodiment of the invention.
Fig. 8 is the display module schematic diagram of second embodiment of the invention.
Fig. 9 is the display module schematic diagram of third embodiment of the invention.
Figure 10 is the display module schematic diagram of fourth embodiment of the invention.
[primary clustering symbol description]
100,100A, 100B, 100C, 200: display module
110,210: display base plate
110a, 210a, 210a ': light inlet side
112,114,116,212,214,216: optical channel
112a, 114a, 116a, 212a, 214a, 216a: optical channel entrance
120,222,222A, 222B, 222C: optical waveguide
120a: incidence surface
120b: exiting surface
120c: the optical waveguide back side
130,224: grating
132: microstructure
140,140 ', 226,226A, 226B, 226C: luminescence component
150: lenticule
150a: lenticule convex surface
160: reflector plate
220: light source module
P: show picture element
SE: select electrode
TE: transparency electrode
A1, A2, A3: overlapping
R1, R2, R3: optical channel part region
P1, P2, P3: son shows picture element
θ: angle
L, L,, L1, L2, L3, L1 ', L2 ', L3 ': light
D: pitch
D: the degree of depth
K: distance
K: spacing
W: width
X, y, z, D1, D2, D3: direction
G, G ': one group of coloured light
[embodiment]
[the first embodiment]
Fig. 1 is display module 100 schematic diagram of first embodiment of the invention.Please refer to Fig. 1, the display module 100 of the present embodiment comprises display base plate 110, optical waveguide 120, grating 130 and the first luminescence component 140.In the present embodiment, display base plate 110 can have multiple optical channels 112,114,116 and light inlet side 110a, these optical channels 112,114,116 are be for example parallel to each other and jointly form multiple demonstration picture element P of array configuration, and each optical channel 112,114,116 has entrance 112a, 114a, 116a and be positioned at the light inlet side 110a of display base plate 110.
In more detail, the below of the optical channel 112,114,116 of the present embodiment may be configured with many and selects electrode SE and transparency electrode TE, wherein select electrode SE parallel and overlapping with optical channel 112,114,116 respectively, transparency electrode TE is vertical and overlapping with optical channel 112,114,116 respectively.In the time selecting there is potential difference (PD) between electrode SE and transparency electrode TE, select therewith electrode SE therewith optical channel 112 part region R1 corresponding to overlapping A1 of transparency electrode TE just can scatter light, and become a son demonstration picture element P1.Similarly, the optical channel 114 part region R2s corresponding with another overlapping A2 of transparency electrode TE with selecting electrode SE also can scatter light, show picture element P2 and become another son.Similarly, also can scatter light with selecting electrode SE and the optical channel that an overlapping A3 the is corresponding again 116 part region R3 of transparency electrode TE, show picture element P3 and become a son again.For example, if subregion R1, the R2 of optical channel 112,114,116, R3 can scatter the coloured light of different colours separately, this little demonstration picture element P1, P2, P3 can form a demonstration picture element P.
In the present embodiment, optical waveguide 120 can be arranged at the light inlet side 110a of display base plate 110.Furthermore, the optical waveguide 120 of the present embodiment has incidence surface 120a and exiting surface 120b, and incidence surface 120a and exiting surface 120b have angle theta.In the present embodiment, angle theta is for example 90 °, but the invention is not restricted to this, and angle theta also can be done different designs according to actual design requirement.In addition, the first luminescence component 140 is arranged at incidence surface 120a, and exiting surface 120b is towards the light inlet side 110a of display base plate 110.In the present embodiment, the light L that optical waveguide 120 is suitable for the first luminescence component 140 to send transmits in the past toward entrance 112a, 114a, 116a by its exiting surface 120b equably.The material of the optical waveguide 120 of the present embodiment can be polymethylmethacrylate (polymethyl methacrylate, PMMA), polycarbonate (polycarbonate, PC) or glass, but the present invention is not as limit.
In the present embodiment, grating 130 arranges in optical waveguide 120.Furthermore, the grating 130 of the present embodiment can be arranged at the back side 120c relative with exiting surface 120b.So, the invention is not restricted to this, in other embodiments, grating 130 also can be arranged at the exiting surface 120b of optical waveguide 120, for example, be shown in Fig. 2.Certainly, the exiting surface 120b of optical waveguide 120 and back side 120c also can be provided with grating 130 simultaneously.In addition, pitch (pitch) D of the grating 130 of the present embodiment can be between 250 nanometer to 475 nanometers, for example, be shown in Fig. 3.Say in detail, the Wavelength distribution of the light L that the pitch D of grating can send according to the first luminescence component 140 designs.For example, when the Wavelength distribution of the light L that the first luminescence component 140 sends is between 400 nanometer to 700 nanometers when (being visible light wavelength distribution range), the pitch D of grating 130 is preferably between 325 nanometer to 400 nanometers.So the invention is not restricted to this, when the Wavelength distribution of the light L sending when the first luminescence component 140 comprises black light district (i.e. 320 nanometer to 400 nanometers), pitch (pitch) D of grating is also between 250 nanometer to 475 nanometers.
In the present embodiment, grating 130 can comprise multiple microstructures 132, and wherein the space D (being the pitch D of grating) of 132 of each microstructures is for example fixed value.So, the invention is not restricted to this, in other embodiments, the space D that each microstructure is 132 also can the light intensity distributions on optical waveguide 120 back side 120c design according to light L.For example, in the time that the light intensity distributions on the back side 120c apart from incidence surface 120a that end far away is weak, can be by the stronger region of the upper light intensity distributions of back side 120c, the space D that multiple microstructures on it are 132 designs narrower, so that can larger angle pass by the light L of the narrower microstructure 132 of these space D, and enter apart from incidence surface 120a optical channel 112,114,116 far away, and then increase the homogeneity of display module 100.Furthermore, the pitch D of grating (being the space D of 132 of each microstructures) can carry out various design according to actual design requirement.
In the present embodiment, grating 130 has fixing depth d, for example, be shown in Fig. 3.This means, grating 130 can comprise multiple microstructures 132, and wherein the depth d of each microstructure 132 is all identical.So, the invention is not restricted to this, in other embodiments, grating 130 also can have two or more depth d.For example, in other embodiments, grating 130 also can be had a gradual change depth d.This means, grating 130 can comprise multiple microstructures 132, and wherein the depth d of each microstructure 132 can be not identical.For example, the depth d of each microstructure 132 can deepen greatly and gradually along with the distance K of itself and incidence surface 120a becomes, for example, be shown in Fig. 4.Furthermore, the grating 130 of this kind of depth d gradual change, can make light L in optical waveguide 120, conduct more equably, and then light L is entered in each optical channel 112,114,116 more equably.In other words, the grating 130 of this depth d gradual change, can make the homogeneity of display module 100 better.
In the present embodiment, grating 130 can comprise multiple microstructures 132, and these microstructures 132 are for example multiple rectangular columns parallel to each other.In detail, if incidence surface 110a is positioned at x-z plane, these microstructures 132 can be the multiple rectangular columns that extend along x direction, for example, be shown in Fig. 5.So, the invention is not restricted to this, in other embodiments, microstructure 132 also can be isosceles triangle post (as shown in Figure 6), right-angle triangle post (as shown in Figure 7), other polygon post or erose cylinder.It is worth mentioning that, the shape of microstructure 132 and configuration mode can affect the diffraction efficiency (diffraction efficiency) of grating 130 to light L.In other words, deviser can optimize by changing the shape (or configuration mode) of microstructure 132 the diffraction efficiency of (optimax) grating 130.
For example, if these microstructures 132 are multiple isosceles triangle posts (shown in Fig. 6) parallel to each other and that extend in the x-direction, wherein the base width of each isosceles triangle post and the degree of depth are respectively W and d, the spacing of each isosceles triangle intercolumniation is k, when the depth d of isosceles triangle post is darker, (W/K) the larger or depth-to-width ratio (W/d) of filling up rate is when larger, the diffraction efficiency of grating 130 is better.Particularly, if the rate of filling up (W/K) of these microstructures 132 (isosceles triangle post) and depth-to-width ratio (W/d) are all greater than at 0.5 o'clock, the diffraction efficiency of grating 130 is good.
First luminescence component 140 of the present embodiment is suitable for providing the first light L to enter optical waveguide 120, and after grating 130 outgoing to the light inlet side 110a of display base plate 110, wherein the first light L becomes multiple along different angles outgoing and have first group of coloured light G of different wave length by the rear diffraction of grating 130, and in first group of coloured light G, include the light of multiple different wave lengths, the light of these different wave lengths also enters respectively corresponding optical channel (for example 112,114,116), using the light source as showing picture element P.In the present embodiment, the first luminescence component 140 can be white light emitting diode, but the present invention is not as limit.
For example, in the present embodiment, the first light L is entered after optical waveguide 120 by incidence surface 120a, and by grating 130, diffraction becomes first group of coloured light G of many groups.Embodiment with Fig. 2 illustrates, first group of coloured light G can comprise the first coloured light L1, the second coloured light L2 and the 3rd coloured light L3, and wherein the first coloured light L1, the second coloured light L2 and the 3rd coloured light L3 enter respectively corresponding the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light passage 116.Particularly, the first coloured light L1, the second coloured light L2 and the 3rd coloured light L3 can be respectively red light, green light and blue light, the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light passage 116 can be respectively red light channel, blue light channel and green light channel, red light enters corresponding red channels, blue light enters corresponding blue light passage, and green light enters corresponding green light passage.In addition, these optical channels (for example 112,114,116) are the order repeated arrangement with the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light channel 116.For example, in the present embodiment, red light channel, green light channel and blue light channel can be according to this sequentially along negative z direction repeated arrangement.
In the present embodiment, because the first coloured light L1, the second coloured light L2 in same group of first group of coloured light G of diffraction of grating 130 and the 3rd coloured light L3 can be respectively with three different direction D1, D2, D3 outgoing in optical waveguide 120, and then can enter respectively the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light passage 116 of three different positions.It is worth mentioning that, the direction of each first coloured light L1 (or each second coloured light L2, each the 3rd coloured light L3) outgoing in optical waveguide 120 in is not on the same group parallel to each other.Thus, in the time that optical waveguide 120 (or grating 130) has the displacement in a z direction with the light inlet side 110a of display base plate 110, be both along another first coloured light L1 (or second group of coloured light L2 or the 3rd group of coloured light L3) organizing in first group of coloured light G of direction D1 (or direction D2 or direction D3) outgoing and still can enter in the first coloured light passage 112 (or the second coloured light passage 114 or the 3rd coloured light passage 116) of former correspondence.In other words, the requirement that the display module 100 of the present embodiment can be assembled precision by grating 130 reduces effectively, and it is easily assembled.
The display module 100 of the present embodiment can further comprise multiple lenticules 150, and these lenticules 150 can be arranged at respectively entrance 112a, 114a, the 116a of optical channel.For example, the lenticule 150 of the present embodiment can be the plano-convex lens of radius-of-curvature between 0.25～0.33 centimetre, its convex surface 150a is towards exiting surface 120b, its convex surface 150a is towards entrance 112a, 114a, the 116a of optical channel, and wherein the focal plane of these lenticules 150 (focal plane) is entrance 112a, the 114a of optical channel, the light inlet side 110a at 116a place.
In the present embodiment, lenticule 150 is mainly for the first light L1 (or the second light L2 or the 3rd light L3) on the same group not being focused to in the entrance 112a (or 114a or 116a) of the first optical channel 112 (or the second optical channel 114 or the 3rd optical channel 116).In other words, these lenticules 150 can make the first light L1 (or the second light L2 or the 3rd light L3) enter more efficiently in the first optical channel 112 (or the second optical channel 114 or the 3rd optical channel 116), using the light source as showing picture element P.In the present embodiment, these lenticules 150 can stick together on light inlet side 110a by optical cement, the refractive index of optical cement can with the refractive index collocation of lenticule 150 so that the first light L1 (or the second light L2 or the 3rd light L3) enters efficiency in the first optical channel 112 (or the second optical channel 114 or the 3rd optical channel 116) is better.For example, the refractive index of lenticule 150 can be 1.58, and the refractive index of optical cement can be 1.2.
The display module 100 of the present embodiment more can comprise reflector plate 160, is arranged at the back side 120c with respect to exiting surface 120b of optical waveguide 120.In the present embodiment, reflector plate 160 can be by the light L reflected light waveguide 120 passing from back side 120c, and then increases the light utilization ratio of the display module 100 of the present embodiment.
[the second embodiment]
Fig. 8 is the display module 100A schematic diagram of second embodiment of the invention.Please refer to Fig. 8, the display module 100A of the present embodiment and the display module 100 of the first embodiment are similar, and therefore the assembly identical with Fig. 1 represents with identical symbol.Just both different locating explain below, and identical locating just no longer repeats.
The display module 100A of the present embodiment comprises display base plate 110, optical waveguide 120, grating 130 and the first luminescence component 140.The display module 100A of the present embodiment more comprises the second luminescence component 140 ', this second luminescence component 140 ' is arranged at the side 120d of relative incidence surface 120a, this second luminescence component 140 ' provides the second light L ' to enter optical waveguide 120, and after grating 130 outgoing to the light inlet side 110a of display base plate 110, the second light L ' becomes multiple along different angles outgoing and have second group of coloured light G ' of different wave length by the rear diffraction of grating 130, and in second group of coloured light G ', include the light of multiple different wave lengths, the light of these different wave lengths enters respectively corresponding optical channel (for example optical channel 112, 114, 116), using the light source as showing picture element P.In the present embodiment, the first luminescence component 140 and the second luminescence component 140 ' are all white-light emitting assembly, for example white light emitting diode.
In the present embodiment, the light L being sent by the first luminescence component 140 can go out first group of coloured light G of many groups by institute's diffraction by grating 130, the light L ' being sent by the second luminescence component 140 ' can go out second group of coloured light G ' of many groups by diffraction by grating 130, and wherein the color distribution of first group of coloured light G and second group of coloured light G ' is mirror image symmetry.Say in detail, first group of coloured light G can comprise the first coloured light L1, the second coloured light L2 and the 3rd coloured light L3, second group of coloured light G ' can comprise the first coloured light L1 ', the second coloured light L2 ' and the 3rd coloured light L3 ', wherein the 3rd coloured light L3 and the 3rd coloured light L3 ' can be overlapping and be left exiting surface 120b along y direction, the second coloured light L2 and the second coloured light L2 ' form mirror image symmetry taking the direction of the 3rd coloured light L3 (or the 3rd coloured light L3 ') outgoing exiting surface 120b as axle, the first coloured light L1 and the first coloured light L1 ' also form mirror image symmetry taking the direction of the 3rd coloured light L3 (or the 3rd coloured light L3 ') outgoing exiting surface 120b as axle.
In the present embodiment, the first coloured light L1 (or L1 '), the second coloured light L2 (or L2 ') and the 3rd coloured light L3 (or L3 ') enter respectively corresponding the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light passage 116.Particularly, the first coloured light L1 (or L1 '), the second coloured light L2 (or L2 ') and the 3rd coloured light L3 (or L3 ') can be respectively red light, green light and blue light, the first coloured light passage 112, the second coloured light passage 114 and the 3rd coloured light passage 116 can be respectively red light channel, blue light channel and green light channel, red light enters corresponding red channels, blue light enters corresponding blue light passage, and green light enters corresponding green light passage.
In the present embodiment, optical channel the 112,114, the 116th, with the order repeated arrangement of the first coloured light passage 112, the second coloured light passage 114, the 3rd coloured light passage 116 and the second optical channel 114.For example, optical channel 112,114,116,114 is respectively that order with red light channel, green light channel, blue light channel and green light channel is along negative z direction repeated arrangement.
It is worth mentioning that, in the present embodiment, the direction of each first coloured light L1 (or each second coloured light L2, each the 3rd coloured light L3) outgoing in optical waveguide 120 in different first group of coloured light G is parallel to each other.In addition, the direction of each the first coloured light L1 ' in different second group of coloured light G ' (or each second coloured light L2 ', each the 3rd coloured light L3 ') outgoing in optical waveguide 120 is also parallel to each other.So, in the time that optical waveguide 120 (or grating 130) has the displacement in a z direction with the light inlet side 110a of display base plate 110, each coloured light L1, L2, L3, L1 ', L2 ', L3 ' still can enter in corresponding the first coloured light passage 112 (or the second coloured light passage 114 or the 3rd coloured light passage 116).In other words, the requirement that the display module 100A of the present embodiment also can be assembled precision by grating 130 reduces effectively, and it is easily assembled.In addition, because the both sides of the optical waveguide 120 of the present embodiment are all provided with luminescence component, so the brightness of the display module 100A of the present embodiment and inhomogeneity performance are good.
So, the present embodiment only illustrates the each photochromic path of first group of coloured light G and second group of coloured light G ' apart from the grating 130 of D with particular sections, but the present invention is not as limit, can design different each photochromic paths according to the pitch D of different gratings 130, also can form the demonstration picture element P of different colours combination simultaneously.
[the 3rd embodiment]
Fig. 9 is the display module 100B schematic diagram of third embodiment of the invention.Please refer to Fig. 9, the display module 100B of the present embodiment and the display module 100 of the first embodiment are similar, and only the configuration mode of first luminescence component 140 of the present embodiment is different from the configuration mode in the first embodiment.
In the present embodiment, optical waveguide 120 has the incidence surface 120a of exiting surface 120b and relative exiting surface 120b, and the first luminescence component 140 is arranged at incidence surface 120a, and exiting surface 120b is towards the light inlet side 110a of display base plate 110.In addition, the grating 130 of the present embodiment is arranged at the exiting surface of optical waveguide 120.It is worth mentioning that, the light that first luminescence component 140 of the present embodiment sends can pass through colimated light system adjustment, so that the angle that light can be suitable is by grating 130.The display module 100B of the present embodiment and the display module 100 of the first embodiment have similar feature and benefit, just no longer repeat in this.
[the 4th embodiment]
Figure 10 is display module 200 schematic diagram of fourth embodiment of the invention.Please refer to Figure 10, the display module 200 of the present embodiment and the display module 100 of the first embodiment are similar, below just both different locating explain, identical locating just no longer repeats.
The display module 200 of the present embodiment can comprise display base plate 210 and multiple light source module 220.In the present embodiment, display base plate 210 has multiple optical channels 212,214,216 and light inlet side 210a, optical channel 212,214,216 is parallel to each other and jointly forms multiple demonstration picture element P of array configuration, and each optical channel 212 (or 214 or 216) has entrance 212a (or 214a or 216a) and be positioned at the light inlet side 210a of display base plate 210.Say in detail each optical channel 212 (or 214; Or 216) can there are two entrance 212a (or 214a or 216a) and lay respectively at light inlet side 210a another the light inlet side 210a ' relative with light inlet side 210a of display base plate 210.
In the present embodiment, each light source module 220 can comprise optical waveguide 222, grating 224 and luminescence component 226.Optical waveguide 222 is arranged at the light inlet side 210a of display base plate 210.Grating 224 is arranged in optical waveguide 222.Luminescence component 226 provides monochromatic light L to enter optical waveguide 222, and after grating 224 outgoing to the light inlet side 210 (or 210 ') of display base plate 210, wherein the luminescence component 226 of different light source modules 220 provides the light of different wave length, to become the multiple coloured light along different angles outgoing by the rear diffraction of each self-corresponding grating 224, these coloured light enter corresponding optical channel 212 (or 214 or 216), using the light source as showing picture element P.
For example, the display module 200 of the present embodiment can comprise three light source modules 220 (i.e. the first light source module 220A, secondary light source module 220B, the 3rd light source module 220C), wherein the first light source module 220A can comprise the first optical waveguide 222A, the first grating 224A and the first luminescence component 226A, secondary light source module 220B can comprise the second optical waveguide 222B, the first grating 224B and the second luminescence component 226B, and the 3rd light source module 220C can comprise the 3rd optical waveguide 222C, the 3rd grating 224C and the 3rd luminescence component 226C.In the present embodiment, the first light source module 220A and the 3rd light source module 220C can be arranged at the light inlet side 210a of display base plate 210, and secondary light source module 220B can be arranged at another the light inlet side 210a ' relative with light inlet side 210a.
In the present embodiment, the coloured light that the first luminescence component 226A sends is for example red light, and the coloured light that the second luminescence component 226B sends is for example green light, and the coloured light that the 3rd luminescence component 226C sends is for example blue light.In other words, the first light source module 220A, secondary light source module 220B can provide respectively red light, green light and blue light to enter in corresponding optical channel 112,114,116 with the 3rd light source module 220C, using the light source as showing picture element P.It is worth mentioning that, because the display module 200 of the present embodiment is to utilize different light source module 220 to provide respectively different coloured light to enter in display base plate 210, therefore the characteristic of display module 200 its color saturations (color saturation) of the present embodiment is good.The present invention is that to pass through optical grating construction by light multiple along different angles outgoing and have the coloured light of different wave length to produce, make have along different angles outgoing and there is the coloured light of different wave length in the exiting surface of optical waveguide, so, the diagram of instructions is only drawn coloured light explanation with the exiting surface of optical waveguide.
In sum, in the display module of one embodiment of the invention, the light diffraction that luminescence component can be sent by the grating being arranged in optical waveguide becomes along different angles outgoing and has many groups coloured light of different wave length.Because of the light in same group of coloured light parallel to each other, so in the time that optical waveguide (or grating) is subjected to displacement in the direction vertical with optical channel bearing of trend with the light inlet side at optical channel entrance place, light is coupled to that the efficiency of optical channel is unlikely is subject to serious impact.In other words, display module of the present invention is by above-mentioned grating, and the requirement of its assembling precision can be effectively reduced, and makes display module of the present invention be easy to assembling.
In addition,, in the display module of another embodiment of the present invention, each luminescence component can be sent to light of all kinds and go out with different angle diffraction by being arranged on grating in each light source module, and then can enter respectively in corresponding optical channel.The light that reason same light source module diffraction is gone out is parallel each other, so when light source module is subjected to displacement in the direction vertical with optical channel bearing of trend with light inlet side, light is coupled to that the efficiency of optical channel is unlikely is subject to serious impact.In other words, the display module of another embodiment of the present invention is by above-mentioned grating, and the requirement of its assembling precision also can be effectively reduced.In addition, because the display module of another embodiment of the present invention is to utilize different light source modules to provide respectively different coloured light to enter in display base plate, therefore the characteristic of its color saturation of the display module of another embodiment of the present invention (color saturation) is good.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; under any, in technical field, have and conventionally know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (9)
1. a display module, comprising:
One display base plate, has multiple optical channels and a light inlet side, and described optical channel is parallel to each other and jointly forms multiple demonstration picture elements of array configuration, and each optical channel has an entrance and be positioned at this light inlet side of this display base plate;
One optical waveguide, is arranged at this light inlet side of this display base plate;
One grating, is arranged in this optical waveguide; And
One first luminescence component, provide one first light to enter this optical waveguide, and after this grating outgoing to this light inlet side of this display base plate, wherein this first light by this grating after diffraction become multiple along different angles outgoing and there is one first group of coloured light of different wave length, and in this first group of coloured light, include the light of multiple different wave lengths, the light of described different wave length also enters respectively corresponding described optical channel, using the light source as described demonstration picture element;
Wherein, this optical waveguide has an exiting surface and an incidence surface, and this exiting surface and this incidence surface have an angle, and this first luminescence component is arranged at this incidence surface, and this exiting surface is towards this light inlet side of this display base plate; And
Described display module more comprises:
One second luminescence component, be arranged at the side of relative this incidence surface, this second luminescence component provides one second light to enter this optical waveguide, and after this grating outgoing to this light inlet side of this display base plate, this second light by this grating after diffraction become multiple along different angles outgoing and there is one second group of coloured light of different wave length, and in this second group of coloured light, include the light of multiple different wave lengths, the light of described different wave length enters respectively corresponding described optical channel, using the light source as described demonstration picture element;
Wherein, the color distribution of this first group of coloured light and this second group of coloured light is mirror image symmetry.
2. display module according to claim 1, is characterized in that, the pitch (pitch) of this grating is between 250 nanometer to 475 nanometers.
3. display module according to claim 1, is characterized in that, this grating has the single degree of depth.
4. display module according to claim 1, is characterized in that, this grating has the gradual change degree of depth.
5. display module according to claim 1, is characterized in that, more comprises multiple lenticules, is arranged at respectively the entrance of described optical channel.
6. display module according to claim 1, is characterized in that, this grating is arranged at this exiting surface or the back side with respect to this exiting surface of this optical waveguide.
7. display module according to claim 1, is characterized in that, more comprises a reflector plate, is arranged at the back side with respect to this exiting surface of this optical waveguide.
8. display module according to claim 7, it is characterized in that, this first group of coloured light and this second group of coloured light comprise one first coloured light, one second coloured light and one the 3rd coloured light separately, and described optical channel system is with the order repeated arrangement of the first coloured light passage, the second coloured light passage, the 3rd coloured light passage and one second optical channel.
9. display module according to claim 1, is characterized in that, this grating is arranged at this exiting surface of this optical waveguide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099142846A TWI452402B (en) | 2010-12-08 | 2010-12-08 | Display device |
| TW099142846 | 2010-12-08 |
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| Publication Number | Publication Date |
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| CN102162936A CN102162936A (en) | 2011-08-24 |
| CN102162936B true CN102162936B (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110029892.4A Expired - Fee Related CN102162936B (en) | 2010-12-08 | 2011-01-21 | display assembly |
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| Country | Link |
|---|---|
| CN (1) | CN102162936B (en) |
| TW (1) | TWI452402B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324898B (en) * | 2016-10-28 | 2017-08-25 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN106483751B (en) * | 2016-12-09 | 2018-10-23 | 上海天马微电子有限公司 | Light-source structure, 3 d display device |
| CN110320588A (en) | 2018-03-30 | 2019-10-11 | 中强光电股份有限公司 | Optical waveguide device and display |
| US20230194866A1 (en) * | 2021-12-16 | 2023-06-22 | Meta Platforms Technologies, Llc | Patterned light illuminator for a display panel |
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| CN101149445A (en) * | 2007-11-09 | 2008-03-26 | 清华大学 | Grating and its backlight module |
| CN101408673A (en) * | 2004-06-24 | 2009-04-15 | 奥林巴斯株式会社 | Image display apparatus |
| CN101676771A (en) * | 2008-09-17 | 2010-03-24 | 财团法人工业技术研究院 | Optical system for splitting colors and display unit using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6665027B1 (en) * | 1999-07-23 | 2003-12-16 | Bae Systems Information And Electronic System Integration Inc | Color liquid crystal display having diffractive color separation microlenses |
| GB0119176D0 (en) * | 2001-08-06 | 2001-09-26 | Ocuity Ltd | Optical switching apparatus |
| TWI251684B (en) * | 2003-08-21 | 2006-03-21 | Ind Tech Res Inst | Diffraction micro-structure color splitting device |
| TWI306963B (en) * | 2004-12-31 | 2009-03-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and backlight module having same |
| TWI334046B (en) * | 2007-07-10 | 2010-12-01 | Au Optronics Corp | Color filterless liquid crystal display device |
| TWI381218B (en) * | 2008-08-08 | 2013-01-01 | Ind Tech Res Inst | System for optical color division and displaying apparatus in application |
-
2010
- 2010-12-08 TW TW099142846A patent/TWI452402B/en not_active IP Right Cessation
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408673A (en) * | 2004-06-24 | 2009-04-15 | 奥林巴斯株式会社 | Image display apparatus |
| CN101149445A (en) * | 2007-11-09 | 2008-03-26 | 清华大学 | Grating and its backlight module |
| CN101676771A (en) * | 2008-09-17 | 2010-03-24 | 财团法人工业技术研究院 | Optical system for splitting colors and display unit using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102162936A (en) | 2011-08-24 |
| TW201224623A (en) | 2012-06-16 |
| TWI452402B (en) | 2014-09-11 |
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