CN104157669A - Organic light emitting display panel and manufacturing method and display device thereof - Google Patents

Organic light emitting display panel and manufacturing method and display device thereof Download PDF

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Publication number
CN104157669A
CN104157669A CN201410157392.2A CN201410157392A CN104157669A CN 104157669 A CN104157669 A CN 104157669A CN 201410157392 A CN201410157392 A CN 201410157392A CN 104157669 A CN104157669 A CN 104157669A
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Prior art keywords
microprism
display panel
electroluminescence display
organic electroluminescence
pixel
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CN104157669B (en
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罗丽媛
吕伯彦
韩立静
王永志
沈永财
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Tianma Microelectronics Co Ltd
Shanghai Tianma AM OLED Co Ltd
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Tianma Microelectronics Co Ltd
Shanghai Tianma AM OLED Co Ltd
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Abstract

The invention provides an organic light emitting display panel, device and manufacturing method thereof. The organic light emitting display panel comprises an array substrate provided with a pixel light emitting region and a pixel spacing region, and composed of a lower micro prism disposed in the pixel light emitting region; a cover plate disposed opposite to the array substrate, provided with a light transmissive region corresponding to the pixel spacing region and a light shielding region corresponding to the pixel light emitting region, and composed of an upper micro prism at least disposed in the light transmissive region; and a medium filled in a gap between the array substrate and the cover plate. The organic light emitting display panel provided by the invention can be used for reducing reflective light of the front face of the panel, and improving display effects of the organic light emitting display panel.

Description

A kind of organic electroluminescence display panel and manufacture method thereof, display unit
Technical field
The present invention relates to Display Technique field, the display unit that especially relates to a kind of organic electroluminescence display panel and manufacture method thereof, comprises this organic electroluminescence display panel.
Background technology
Organic light emitting display (OLED, Organic Light Emitting Display) be a kind of thin-film light emitting device that organic semiconducting materials is made, that use direct voltage drive that utilizes, OLED Display Technique is different from traditional LCD display mode, without backlight, adopt very thin coating of organic material and glass substrate, in the time having electric current to pass through, these organic materials will be luminous.And OLED display screen can do lighter and thinnerly, visible angle is larger, and can significantly save electric energy.
In organic electroluminescence display panel, need to arrange many metal levels, the reflecting power of metal is strong, wherein the anode of organic illuminating element and negative electrode all adopt reflective or semi reflective material conventionally, simultaneously, region relative with organic illuminating element on cover plate is open area, make surround lighting can enter organic electroluminescence display panel and strong reflection occurs, affect the display effect of organic electroluminescence display panel.At present, conventionally on the cover board the fit method of a slice rotatory polarization sheet of employing plays good anti-reaction, but the negative effect of bringing is: module brightness reduces obviously; For realizing equal display brightness before module and paster, the corresponding increase of power consumption; The increase of power consumption can bring again the significantly shortening of display life; The thickness of whole panel also increased about 160um even more than.
At present, for promoting OLED display performance, improve brightness, increase useful life, people are devoted to study the whole bag of tricks of OLED device efficiency and life-span upgrading always.If any can be without rotatory polarization sheet, play anti-counteractive technology simultaneously and occur, by overcoming the defect of above employing rotatory polarization sheet, in high brightness, low-power consumption, long-life user demand, contribute.
In prior art, be full impregnated light because of the region corresponding with the pixel luminous zone of array base palte on cover plate, because its anode of organic light emission original paper or the negative electrode that are arranged on pixel luminous zone are reflective or semi reflective material, therefore the light that incides organic electroluminescence display panel inside from the external world can produce reflective phenomenon by the reflection of anode or negative electrode, affects the display effect of organic electroluminescence display panel.In the organic electroluminescence display panel that the embodiment of the present invention one provides, the pixel luminous zone 115 of array base palte is provided with organic illuminating element 113, region on cover plate corresponding to pixel luminous zone 115 is shading region 125, stop surround lighting, reflective the greatly reducing that therefore anode of organic illuminating element 113 or negative electrode cause; Meanwhile, corresponding with the transparent area 126 of cover plate is the pixel separation district 116 of array base palte, and the material in pixel separation district 116 is generally acrylic or resin material, and reflectivity is low, reduces the reflection of light to external world.Therefore the organic electroluminescence display panel that the embodiment of the present invention one provides has reduced reflective phenomenon effectively, has improved the display effect of organic electroluminescence display panel.
The organic electroluminescence display panel that the embodiment of the present invention one provides is to utilize the lower microprism 114 and the upper microprism 124 that are arranged on panel inside to realize demonstration, when the lower microprism 114 of the light sending when organic illuminating element 113 by 115 surfaces, pixel luminous zone, radiation direction deflects, make light can arrive the transparent area 126 of cover plate, when the light of arrival transparent area 126 passes through the upper microprism 124 in cover plate, can reflect again, levelling light path, more light can be appeared from the transparent area 126 of cover plate with the direction of vertical organic electroluminescence display panel.
Illustrate the operation principle of the organic electroluminescence display panel that the embodiment of the present invention one provides below in conjunction with accompanying drawing.Many light path schematic diagrames of the organic electroluminescence display panel that Fig. 2 provides for embodiment mono-, please refer to Fig. 2, the light that organic illuminating element 113 sends can penetrate from all directions, and the difference that in Fig. 2, light a, b, c, d, e have schematically provided the light of the different directions that an organic illuminating element 113 sends is moved towards situation.Light a and d have arrived the light shield layer 121 on cover plate after the refraction of lower microprism 114, cannot be transmitted to outside organic electroluminescence display panel.Light b appears organic electroluminescence display panel with tilted direction after the refraction of lower microprism 114 and upper microprism 124.Light c and e appear organic electroluminescence display panel with the direction perpendicular to organic electroluminescence display panel after the refraction of lower microprism 114 and upper microprism 124.Light c appears from the left side of the relative light shield layer 121 of organic illuminating element 113, and light e appears from the right side of the relative light shield layer 121 of organic illuminating element 113.
The Energy distribution of the light that organic illuminating element 113 sends in all angles approaches lambertian distribution, that is to say the light intensity maximum in the direction of vertical organic luminous panel, in addition, user observes and uses in the direction that is vertical or near perpendicular to organic electroluminescence display panel in normal circumstances, if the light perpendicular to organic electroluminescence display panel that organic illuminating element 113 sends is after the refraction of lower microprism 114 and upper microprism 124, still can appear with the direction perpendicular to organic luminous panel, its organic electroluminescence display panel providing can reach good display efficiency so, therefore can be with reference to shape and the refractive index etc. of selecting lower microprism 114 and upper microprism 124 perpendicular to the light of organic electroluminescence display panel.
Make the light perpendicular to organic electroluminescence display panel that organic illuminating element 113 sends after the refraction of lower microprism 114 and upper microprism 124, can appear with the direction perpendicular to organic luminous panel, need to meet following formula (1):
n p 1 cos α d cos α - L sin α = n p 2 cos β d cos β - L sin β Formula (1)
Wherein, n p1for the refractive index of lower microprism 114,
N p2for the refractive index of upper microprism 124,
α is that the side of refraction and the angle of vertical organic electroluminescence display panel direction occur lower microprism 114 light,
β is that the side of refraction and the angle of vertical organic electroluminescence display panel direction occur upper microprism 124 light,
The distance of the d point-to-point transmission that to be light at lower microprism 114 and upper microprism 124 refraction occurs in vertical organic electroluminescence display panel direction,
The distance of the L point-to-point transmission that to be light at lower microprism 114 and upper microprism 124 refraction occurs in parallel organic electroluminescence display panel direction.
Below in conjunction with accompanying drawing, formula (1) is specifically described.The light path schematic diagram of the light Z perpendicular to organic electroluminescence display panel that Fig. 3 (a) provides for embodiment mono-, Fig. 3 (b) is the cross section enlarged diagram of the lower microprism 114 in Fig. 3 (a), and Fig. 3 (c) is the cross section enlarged diagram of the upper microprism 124 in Fig. 3 (a).
As shown in Fig. 3 (a), light Z penetrates from the side A of lower microprism 114, and the side B of the upper microprism 124 on microprism 114 right sides, top enters upper microprism 124 from being positioned at, thereby appear organic electroluminescence display panel, the side A of lower microprism 114 and the side B of upper microprism 124 are two relative sides.
As shown in Fig. 3 (b), the side A of lower microprism 114 is α with the angle in vertical organic electroluminescence display panel direction.As shown in Fig. 3 (c), the angle in side B and the vertical panel direction of upper microprism 124 is β.The refractive index of lower microprism 114 and upper microprism 124 is respectively as n p1and n p2; The refractive index of medium 130 is n m.
First light Z exposes to the eye point X of the side A of lower microprism 114, now, and due to the refractive index n of lower microprism 114 p1refractive index n with medium 130 mdifference, light Z can reflect.At eye point X place, normal F1 is vertical with side A, and the angle between normal F1 and side A is between the incident direction of light Z and normal F1, angle i is incidence angle.Because light Z is also perpendicular to organic electroluminescence display panel direction in the direction of lower microprism 114 interior propagation, therefore the angle of the side A of light Z and lower microprism 114 is also α, incidence angle
Angle of emergence when light Z enters medium 130 from lower microprism 114 ejaculations is r, the namely angle between the direction of propagation and the normal F1 of light Z in medium 130, and the direction that wherein θ is light Z after an X refraction and the angle between vertical organic electroluminescence display panel direction.Particularly, descending as mentioned above the side A of microprism 114 is α with the angle in vertical organic electroluminescence display panel direction, the angle between normal F1 and vertical organic electroluminescence display panel direction there is again e=r+ θ according to triangle exterior angle theorem, simultaneously and after refraction, light Z transfers to the incidence point Y place of the side B of microprism 124 in medium 130.The distance being parallel in organic luminous panel direction of the incidence point Y point-to-point transmission of the eye point X of the side A of lower microprism 114 and the side B of upper microprism 124 is L, is d perpendicular to the distance in organic luminous panel direction.Please refer to formula (2) according to the law of refraction:
sin l sin r = n m n p 1 Formula (2)
The substitution such as i, r formula (2) is calculated to following equation, sees formula (3):
cos α √ L 2 + d 2 d cos α - L sin α = n m n p 1 Formula (3)
Light Z, after the refraction of lower microprism 114, arrives the incidence point Y of the side B of upper microprism 124 through medium 130, reflect again.At incidence point Y place, normal F2 is vertical with side B, and the angle between normal F2 and side B is between the direction of propagation of light Z and normal F2, angle i ' is incidence angle, and the direction that wherein θ is light Z after eye point X refraction and the angle between vertical organic electroluminescence display panel direction.Particularly, the side A that goes up as mentioned above microprism 124 is β with the angle in vertical organic electroluminescence display panel direction, the angle between normal F2 and vertical organic electroluminescence display panel direction there is again f=i'+ θ according to triangle exterior angle theorem, simultaneously i ' = π 2 - ( β + θ ) .
The angle of emergence of light Z when medium 130 enters microprism 124 is r ', the namely angle between the direction of propagation and the normal F2 of light Z in upper microprism 124, because light Z is also perpendicular to organic electroluminescence display panel direction in the direction of upper microprism 124 interior propagation, therefore the angle of the side B of light Z and upper microprism 124 is also β,
Please refer to formula (4) according to the law of refraction:
sin tl sin r 1 = n p 2 n m Formula (4)
The substitution such as i', r' formula (4) is calculated to following equation, sees formula (5):
d cos β - L sin β cos β L 2 + d 2 = n p 2 n m Formula (5)
By formula (3) and formula (5) cancellation n mcalculating can obtain formula (1).
From analytic process above, can find:
Due to i > r, light Z incidence angle i in the time that refraction occurs X point is greater than angle of emergence r, according to the law of refraction, has n m> n p1, i.e. the refractive index n of medium 130 mbe greater than the refractive index n of lower microprism 114 p1;
Due to i'< r', light Z incidence angle i ' in the time that refraction occurs Y point is less than angle of emergence r ', according to the law of refraction, has n p2< n m, go up the refractive index n of microprism 124 p2be less than the refractive index n of medium 130 m.
Thereby, select the refractive index of medium 130 to be greater than the refractive index of lower microprism 114 and upper microprism 124, the light perpendicular in panel direction that can more effectively allow organic illuminating element 113 send appears cover plate transparent area 126 in order to show.
Further, the d in formula (1) be between an X and some Y in the distance perpendicular in organic luminous panel direction, the distance between cover plate and the array base palte of d and organic electroluminescence display panel and the size of upper microprism 114 and lower microprism 124 are relevant.L in formula (1) be between an X and some Y in the distance being parallel in organic luminous panel direction, on the size of L and organic illuminating element on array base palte 113 and cover plate, the size of transparent area 126 is relevant.
According to above schematically explanation, can consider to do suitable selection to the refractive index of the Refractive Index of Material of lower microprism 114 and upper microprism 124, shape and medium 130.Material to lower microprism 114 and upper microprism 124, shape, size, the situation of arranging and manufacture method are described in more detail below.
In the organic luminous panel providing in the embodiment of the present invention one, lower microprism 114 and upper microprism 124 use transparent material, can use organic material, inorganic material or organic-inorganic composite material etc.As organic material, generally can use resin material, particularly ultraviolet curable resin, electron beam curing resin ionising radiation curable resin, thermosetting resin, thermoplastic resin or the analog etc. can.
For the manufacture method of lower microprism 114 and upper microprism 124, can adopt photoetching process, or use ultraviolet-curing resin micro-contact-printing etc.
For shape, size and the arrangement method of lower microprism 114 and upper microprism 124, there is no strict restriction, do not limit lower microprism 114 whether all identical with upper microprism 124 yet.Below enumerate the execution mode of shape, size and the arrangement method of several lower microprisms 114 and upper microprism 124.
If Fig. 4 (a) is the shape schematic diagram of lower microprism 114, described lower microprism 114 be shaped as the triangular prism bodily form, a side of the lower microprism 114 of the triangular prism bodily form contacts with organic illuminating element, a pixel luminous zone can arrange the lower microprism 114 of one or more triangular prism bodily forms, in order to allow more light that organic illuminating element sends appear the transparent area of cover plate, arranging of lower microprism 114 should be advisable to be covered with whole pixel luminous zone, therefore under tri-prismoid, the size of microprism 114 can be adjusted according to the number of the microprism of the size of pixel luminous zone and a pixel luminous zone setting, Fig. 4 (b) is the schematic diagram that a pixel luminous zone is provided with the lower microprism 114 of 3 triangular prism bodily forms.The size of the lower microprism 114 side angles of the triangular prism bodily form is determined according to aforementioned formula (1).
The shape of lower microprism 114 can be also the rectangular pyramid bodily form, if Fig. 5 (a) is the shape schematic diagram of microprism 114 under a kind of rectangular pyramid bodily form, under the described rectangular pyramid bodily form, the bottom surface quadrangle of microprism 114 is rectangle, its bottom surface contacts with organic illuminating element, a pixel luminous zone can arrange one or more lower microprisms 114, the arranging of lower microprism 114 is covered with whole pixel luminous zone is advisable, if Fig. 5 (b) is the schematic diagram that a pixel luminous zone is provided with microprism 114 under multiple rectangular pyramid bodily forms.
Fig. 6 (a) is the shape schematic diagram for microprism 114 under the another kind of rectangular pyramid bodily form, under the described rectangular pyramid bodily form, the bottom surface quadrangle of microprism 114 is square, its bottom surface contacts with organic illuminating element, a pixel luminous zone can arrange one or more lower microprisms 114, the arranging of lower microprism 114 is covered with whole pixel luminous zone is advisable, if Fig. 6 (b) is the schematic diagram that a pixel luminous zone is provided with microprism 114 under multiple rectangular pyramid bodily forms.
In addition, under the rectangular pyramid bodily form, the bottom surface quadrangle of microprism 114 can be also parallelogram or other quadrangles, but can make that lower microprism 114 appears at the arrangement method of pixel luminous zone and light through more complicated.Under rectangular pyramid, the size of microprism 114 side angles is determined according to aforementioned formula (1).
Fig. 7 (a) is microprism 114 shape schematic diagrames under the another kind of triangular prism bodily form, and a side of the lower microprism 114 of the triangular prism bodily form contacts with organic illuminating element, and the shape of lower microprism 114 is asymmetric in vertical panel direction.When the described lower microprism 114 with asymmetric shape is arranged in pixel luminous zone, can adopt the mode of single repeated arrangement, if Fig. 7 (b) is the single schematic diagram that repeats to arrange of microprism 114 under the another kind of triangular prism bodily form; Also can adopt the mode of symmetric arrays, along the middle alignment both sides symmetric arrays of pixel luminous zone 115, if Fig. 7 (c) is the symmetry arrangement schematic diagram of microprism 114 under the another kind of triangular prism bodily form.
For the upper microprism 124 on cover plate, can adopt the shape identical with lower microprism 114 to carry out corresponding arranging, also can take different shapes.
Below the organic electroluminescence display panel structure of the embodiment of the present invention one is carried out to demonstration emulation experiment.Please refer to Fig. 8 (a), Fig. 8 (b) and Fig. 8 (c), Fig. 8 (a) is the plan structure schematic diagram that embodiment mono-shows the array base palte in emulation experiment, Fig. 8 (b) is the plan structure schematic diagram that embodiment mono-shows emulation experiment cover plate, and Fig. 8 (c) is the cross section structure schematic diagram that embodiment mono-shows organic electroluminescence display panel in emulation experiment.As shown in the figure, the shading region 125 of the cover plate of the organic electroluminescence display panel in emulation experiment is product word structure, array base palte has pixel luminous zone 115 and pixel separation district 116, the size in pixel luminous zone 115 and pixel separation district 116 is 20mm × 20mm, is provided with the lower microprism 114 of multiple square cone shapes in each pixel luminous zone 115.Pixel luminous zone 116 on array base palte is provided with organic illuminating element 113, in the organic electroluminescence display panel adopting in emulation experiment, have 5 organic illuminating elements, the energy of the light that each organic illuminating element 113 sends is 1W, and the light that each organic illuminating element 113 sends meets lambertian distribution.Cover plate has shading region 125 and transparent area 126, and shading region 125 is corresponding with the pixel luminous zone 115 on array base palte, and the light shield layer of shading region 125 adopts light-proof material.Transparent area 126 is corresponding with the pixel separation district 116 on array base palte, is provided with the upper microprism 124 of multiple square cones in each transparent area 126, and lower microprism 114 is all identical with size, shape and the refractive index of upper microprism 124.Between array base palte and cover plate, be filled with medium 130, the refractive index of medium 130 is 1.9, the refractive index of lower microprism 114 and upper microprism 124 is 1.52, and photo-detector 10 is arranged on the outer surface of cover plate, can receive the light appearing from organic electroluminescence display panel surface.
Summary of the invention
In view of this, the invention provides a kind of organic electroluminescence display panel and manufacture method thereof, display unit.
A kind of organic electroluminescence display panel, described organic electroluminescence display panel comprises:
Array base palte, has pixel luminous zone and pixel separation district, comprises the lower microprism that is arranged on described pixel luminous zone;
Cover plate, is oppositely arranged with described array base palte, has transparent area and shading region, comprises the upper microprism that is at least arranged on described transparent area, corresponding described pixel separation district, described transparent area, corresponding described pixel luminous zone, described shading region;
Medium, is filled in the space between described array base palte and described cover plate.
A kind of display unit, comprises described organic electroluminescence display panel.
A manufacture method for organic electroluminescence display panel, is characterized in that:
Array basal plate is provided, and described array base palte has pixel luminous zone and pixel separation district, described pixel
Luminous zone is provided with lower microprism;
One cover plate is provided, and described cover plate has shading region and transparent area, is at least provided with microprism in described transparent area;
By described array base palte and the relative laminating in medium atmosphere of described cover plate, or spread medium on arbitrary in array base palte and cover plate, then fit relative with described cover plate described array base palte, described in when laminating, pixel luminous zone is corresponding with described shading region, and described pixel separation district is corresponding with described transparent area.
Organic electroluminescence display panel provided by the invention, can reduce the reverberation in organic electroluminescence display panel front, improve the display effect of organic electroluminescence display panel, improve the utilance of the light of organic illuminating element, thereby reduce the power consumption of organic electroluminescence display panel, and then can extend the useful life of organic illuminating element.
Brief description of the drawings
The schematic top plan view of a kind of organic electroluminescence display panel that Fig. 1 (a) provides for embodiment mono-;
The schematic top plan view of the another kind of organic electroluminescence display panel that Fig. 1 (b) provides for embodiment mono-;
The schematic top plan view of another organic electroluminescence display panel that Fig. 1 (c) provides for embodiment mono-;
The cross section structure schematic diagram of the organic electroluminescence display panel that Fig. 1 (d) provides for embodiment mono-;
Fig. 2 is the multiple light path schematic diagram of the organic electroluminescence display panel of embodiment mono-;
Fig. 3 (a) is the organic electroluminescence display panel light path schematic diagram of embodiment mono-;
Fig. 3 (b) is the cross section enlarged diagram of lower microprism 114 in Fig. 3 (a);
Fig. 3 (c) is the cross section enlarged diagram of upper microprism 124 in Fig. 3 (a);
Fig. 4 (a) is microprism shape schematic diagram under tri-prismoid;
Fig. 4 (b) is the schematic diagram of arranging of microprism under tri-prismoid
Fig. 5 (a) is microprism shape schematic diagram under a kind of rectangular pyramid;
Fig. 5 (b) is the schematic diagram of arranging of microprism under a kind of rectangular pyramid
Fig. 6 (a) is microprism shape schematic diagram under another kind of rectangular pyramid;
Fig. 6 (b) is the schematic diagram of arranging of microprism under another kind of rectangular pyramid
Fig. 7 (a) is microprism shape schematic diagram under another kind of tri-prismoid;
Fig. 7 (b) is the schematic diagram of arranging of microprism under another kind of tri-prismoid;
Fig. 7 (c) is the another kind of microprism under the another kind of tri-prismoid schematic diagram of arranging;
Fig. 8 (a) is the plan structure schematic diagram that embodiment mono-shows the array base palte in emulation experiment;
Fig. 8 (b) is the plan structure schematic diagram that embodiment mono-shows emulation experiment cover plate;
Fig. 8 (c) is the cross section structure schematic diagram that embodiment mono-shows organic electroluminescence display panel in emulation experiment;
Fig. 9 (a) is the received light energy angular distribution figure of embodiment mono-emulation experiment photo-detector;
Fig. 9 (b) is the received luminous flux angular distribution figure of embodiment mono-emulation experiment photo-detector;
The cross section structure schematic diagram of the organic electroluminescence display panel that Figure 10 provides for embodiment bis-;
The cross section structure schematic diagram of the organic electroluminescence display panel that Figure 11 provides for embodiment tri-;
Figure 12 (a) is the plan structure schematic diagram that embodiment tri-shows the array base palte in emulation experiment;
Figure 12 (b) is the plan structure schematic diagram that embodiment tri-shows emulation experiment cover plate;
Figure 12 (c) is the cross section structure schematic diagram that embodiment tri-shows organic electroluminescence display panel in emulation experiment;
Figure 13 (a) is the received light energy angular distribution figure of embodiment tri-emulation experiment photo-detectors;
Figure 13 (b) is the received luminous flux angular distribution figure of embodiment tri-emulation experiment photo-detectors;
Figure 14 is the cross section structure schematic diagram of the organic electroluminescence display panel of the another kind of execution mode of the embodiment of the present invention three;
Figure 15 is frustum of a pyramid shape schematic diagram;
Figure 16 (a) is the received light energy angular distribution figure of emulation experiment photo-detector of the another kind of execution mode of embodiment tri-;
Figure 16 (b) is the received luminous flux angular distribution figure of emulation experiment photo-detector of the another kind of execution mode of embodiment tri-;
Figure 17 is the schematic top plan view of the organic electroluminescence display panel of the embodiment of the present invention four;
Figure 18 is the flow chart of the manufacture method of embodiments of the invention organic electroluminescence display panel.
Embodiment
In order further to understand technology contents of the present invention; especially exemplified by specific embodiment and coordinate appended illustrate as follows; but the following drawings and embodiment are not limitation of 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 claims person of defining.
Embodiment mono-
With reference to figure 1 (a) to Fig. 1 (d), the partial top view of cover plate one side of the organic electroluminescence display panel that Fig. 1 (a) provides for the embodiment of the present invention one to Fig. 1 (c), on the cover plate of organic electroluminescence display panel, there is shading region 125 and transparent area 126, shading region 125 can adopt the RGB Stripe structure as shown in Fig. 1 (a), also the Delta structure as shown in Fig. 1 (b) can be adopted, the product word structure as shown in Fig. 1 (c) can also be adopted.
Organic electroluminescence display panel AA ' the schematic cross-section that Fig. 1 (d) provides for the embodiment of the present invention one is although organic electroluminescence display panel can adopt different structure, identical in the structure in AA ' cross section.As shown in Fig. 1 (d), described organic electroluminescence display panel comprise array base palte and the cover plate being oppositely arranged and be filled in array base palte and cover plate between medium 130.
Described array base palte has multiple spaced pixels luminous zone 115 and pixel separation district 116, described array base palte comprises substrate 110, be arranged on substrate 110 for organic illuminating element 113 provide signal wiring 111, be arranged on pixel luminous zone 115 organic illuminating element 113, cover lower microprism 114 on organic illuminating element 113, be arranged on the pixel defining layer 112 in pixel separation district 116.Multiple organic illuminating elements 113 are sequentially arranged in multiple pixels luminous zone 115 of substrate 110, be provided with pixel defining layer 112, and pixel defining layer 112 are centered around organic illuminating element 113 around between adjacent two organic illuminating elements 113.Multiple lower microprisms 114 are arranged on the organic illuminating element 213 of pixel luminous zone 215.
Described cover plate and described array base palte are oppositely arranged, and have transparent area 126 and shading region 125.Be provided with light shield layer 121 in shading region 125, can stop passing through of light, described light shield layer 121 can be black matrix.Multiple shading regions 125 are corresponding one by one with multiple pixels luminous zone 115 of array base palte, transparent area 126 is corresponding one by one with the pixel separation district 116 of array base palte, look up from the side perpendicular to organic electroluminescence display panel, shading region 125 is overlapping with pixel luminous zone 115, preferably, shading region 125 is identical with size with the shape of pixel luminous zone 115, looks up from the side perpendicular to organic electroluminescence display panel, and shading region 125 overlaps just completely with pixel luminous zone 115.The inner side of facing array base palte in the transparent area 126 of cover plate is provided with microprism 124.In space between array base palte and cover plate, be filled with medium 130, this medium 130 can be the transparent material such as inert gas or drier.
In the organic electroluminescence display panel of embodiment mono-emulation experiment, have 5 organic illuminating elements, the power of each organic illuminating element is 1W, therefore the light energy of this organic luminous panel is 5W altogether, and the light energy that photo-detector 10 detects is 1.8587W, the light energy that namely appears this organic electroluminescence display panel is 1.8587W, 1.8587W/5W=0.3717, thereby the organic electroluminescence display panel of embodiment mono-is 37.17% to the utilance of light.
Fig. 9 (a) is the received light energy angular distribution figure of embodiment mono-emulation experiment photo-detector, radius coordinate is light energy (W), angular coordinate be angle (°), from Fig. 9 (a), the light energy major part that photo-detector 10 detects is distributed in 90 ° of directions, namely in the direction of vertical organic electroluminescence display panel.The light that organic illuminating element 113 itself sends meets lambertian distribution, and the radiation intensity in 90 ° of directions is 1.3W/Sr.Fig. 9 (b) is the received luminous flux angular distribution figure of embodiment mono-emulation experiment photo-detector, in figure abscissa be angle (°), ordinate is radiation intensity (W/Sr), from Fig. 9 (b), the radiation intensity of the light that photo-detector 10 detects in 90 ° of directions is 2W/Sr, be greater than light that organic illuminating element 113 the sends radiation intensity in 90 ° of directions itself, illustrate that the light that this structure can allow organic illuminating element 113 send appears organic luminous panel by refraction, and the light appearing is gathered in the direction of vertical panel.
Embodiment bis-
With reference to Figure 10, the schematic cross-section of the organic electroluminescence display panel structure that Figure 10 provides for the embodiment of the present invention two.As shown in the figure, described organic electroluminescence display panel comprise array base palte and the cover plate being oppositely arranged and be filled in array base palte and cover plate between medium 230.
Described array base palte has multiple spaced pixels luminous zone 215 and pixel separation district 216, described array base palte comprises substrate 210, be arranged on substrate 210 for organic illuminating element 213 provide signal wiring 211, be arranged on pixel luminous zone 215 organic illuminating element 213, cover lower microprism 214 on organic illuminating element 113, be arranged on the pixel defining layer 212 in pixel separation district 216.Multiple organic illuminating elements 213 are sequentially arranged in multiple pixels luminous zone 215 of substrate 210, be provided with pixel defining layer 212, and pixel defining layer 212 are centered around organic illuminating element 213 around between adjacent two organic illuminating elements 213.Multiple lower microprisms 214 are arranged on the organic illuminating element 213 of pixel luminous zone 215.
Organic illuminating element 213 comprises anode layer 2131, luminous organic material layer 2132 and cathode layer 2133, and in organic illuminating element 213, the most close substrate 210 1 sides of anode layer 2131, adopt metal material, have the effect of reflection ray.Luminous organic material layer 2132 is clipped between anode layer 2131 and cathode layer 2133, and cathode layer 2133 adopts transparent conductive material, as tin indium oxide (ITO) etc.In the time laying cathode layer 2133, be patterned, remove in whole or in part the cathode layer 2133 in pixel separation district 216, cathode layer 2133 parts cover or do not cover pixel separation district 216.Although cathode layer 2133 is transparent materials, it also has certain reflex to light, reduces the laying area of cathode layer 2133 in pixel separation district 216, can weaken the reflex of pixel separation district 216 to surround lighting.
Pixel defining layer 212 covers in wiring 211, because wiring 211 adopts metallic conduction material conventionally, thereby it is very capable to reflection of light, adopt shading and antireflecting pixel defining layer 212 to cover on wiring 211, can greatly reduce array base palte to environment reflection of light.Pixel defining layer 212 can adopt black matrix material etc.Pixel defining layer can also be made into sandwich construction, and in the time that pixel defining layer has at least two-layer structure, that one deck of the most close cover plate can adopt antireflecting material, and described any one or more layers at least two-layer can adopt light screening material.
Described cover plate and described array base palte are oppositely arranged, and have transparent area 226 and shading region 225.Be provided with light shield layer 221 in shading region 225, can stop passing through of light, described light shield layer 121 can be black matrix.Multiple shading regions 225 are corresponding one by one with multiple pixels luminous zone 215 of array base palte, and transparent area 226 is corresponding one by one with the pixel separation district 216 of array base palte.The inner side of facing array base palte in the transparent area 226 of cover plate is provided with microprism 224.In space between array base palte and cover plate, be filled with medium 230, this medium 230 can be the transparent material such as inert gas or drier.
The displaying principle of this embodiment is identical with embodiment mono-, therefore, material, shape, size to upper microprism, lower microprism, arrange and the way to solve the problem such as manufacture method also identical with embodiment mono-, at this, the relevant issues of displaying principle, upper microprism, lower microprism are repeated no more.
Embodiment tri-
With reference to Figure 11, the schematic cross-section of the organic electroluminescence display panel structure that Figure 11 provides for the embodiment of the present invention three.As shown in the figure, described organic electroluminescence display panel comprise array base palte and the cover plate being oppositely arranged and be filled in array base palte and cover plate between medium 330.
Described array base palte has multiple spaced pixels luminous zone 315 and pixel separation district 316, described array base palte comprises substrate 310, be arranged on substrate 310 for organic illuminating element 313 provide signal wiring 311, be arranged on pixel luminous zone 315 organic illuminating element 313, cover lower microprism 314 on organic illuminating element 113, be arranged on the pixel defining layer 312 in pixel separation district 316.Multiple organic illuminating elements 313 are sequentially arranged in multiple pixels luminous zone 115 of substrate 310, be provided with pixel defining layer 312, and pixel defining layer 312 are centered around organic illuminating element 313 around between adjacent two organic illuminating elements 313.Multiple lower microprisms 314 are arranged on the organic illuminating element 313 of pixel luminous zone 315.
Described cover plate and described array base palte are oppositely arranged, and have transparent area 326 and shading region 325.Be provided with light shield layer 321 in shading region 325, can stop passing through of light, described light shield layer 321 can be black matrix.Multiple shading regions 325 are corresponding one by one with multiple pixels luminous zone 315 of array base palte, and transparent area 326 is corresponding one by one with the pixel separation district 316 of array base palte.The inner side of facing array base palte in the transparent area 326 of cover plate is provided with microprism 324.In space between array base palte and cover plate, be filled with medium 330, this medium 330 can be the transparent material such as inert gas or drier.
Further, light shield layer 321 at cover plate is provided with reflector 322 towards a side of array base palte, reflector 322 can adopt metal material, except 326 places, transparent area of cover plate are provided with upper microprism 324, the reflector 322 of cover plate is also provided with upper microprism 324 towards a side of array base palte, do not have strict restriction for reflector 322 towards shape, the size of the upper microprism 324 of a side of array base palte, can adopt the upper microprism 324 identical with transparent area 326 and identical arrangement mode.When the illumination that organic illuminating element 313 sends is mapped to the shading region 325 of cover plate, reflector 322 can be reflected back pixel luminous zone 315 by light and be used again, improves the utilance of light.
Below the organic electroluminescence display panel structure of the embodiment of the present invention three is carried out to demonstration emulation experiment.Please refer to Figure 12 (a), Figure 12 (b) and Figure 12 (c), Figure 12 (a) is the plan structure schematic diagram that embodiment tri-shows the array base palte in emulation experiment, Figure 12 (b) is the plan structure schematic diagram that embodiment tri-shows emulation experiment cover plate, and Figure 12 (c) is the cross section structure schematic diagram that embodiment tri-shows organic electroluminescence display panel in emulation experiment.As shown in the figure, array base palte has pixel luminous zone 315 and pixel separation district 316, the size in pixel luminous zone 315 and pixel separation district 316 is 20mm × 20mm, is provided with the lower microprism 314 of multiple square cone shapes in each pixel luminous zone 315.Pixel luminous zone 316 on array base palte is provided with organic illuminating element 313, in the organic electroluminescence display panel adopting in emulation experiment, have 5 organic illuminating elements, the energy of the light that each organic illuminating element 313 sends is 1W, and the light that each organic illuminating element 313 sends meets lambertian distribution.Cover plate has shading region 325 and transparent area 326, shading region 325 is corresponding with the pixel luminous zone 315 on array base palte, shading region 325 is provided with light shield layer 321, light shield layer 321 is provided with reflector 322 towards a side of array base palte, and transparent area 326 is corresponding with the pixel separation district 316 on array base palte.The shading region 325 of cover plate and transparent area 326 are provided with the upper microprism 324 of multiple square cones towards a side of array base palte, lower microprism 314 is all identical with size, shape and the refractive index of upper microprism 324.Between array base palte and cover plate, be filled with medium 330, the refractive index of medium 330 is 1.9, the refractive index of lower microprism 314 and upper microprism 324 is 1.52, and photo-detector 10 is arranged on the outer surface of cover plate, can receive the light appearing from organic electroluminescence display panel surface.
In the organic electroluminescence display panel of embodiment tri-emulation experiments, have 5 organic illuminating elements, the power of each organic illuminating element is 1W, therefore the light energy of this organic luminous panel is 5W altogether, and the light energy that photo-detector 10 detects is 2.0312W, the light energy that namely appears this organic electroluminescence display panel is 2.0312W, 2.0312W/5W=0.40624, thereby embodiment tri-ground organic electroluminescence display panels are 40.624% to the utilance of light.
Figure 13 (a) is the received light energy angular distribution figure of embodiment tri-emulation experiment photo-detectors, radius coordinate is light energy (W), angular coordinate be angle (°), from Figure 13 (a), the light energy major part that photo-detector 10 detects is distributed in 90 ° of directions, namely in the direction of vertical organic electroluminescence display panel.The light that organic illuminating element 313 itself sends meets lambertian distribution, and the radiation intensity in 90 ° of directions is 1.3W/Sr.Figure 13 (b) is the received luminous flux angular distribution figure of embodiment tri-emulation experiment photo-detectors, in figure abscissa be angle (°), ordinate is radiation intensity (W/Sr), from Figure 13 (b), the radiation intensity of the light that photo-detector 10 detects in 90 ° of directions is 2.1W/Sr, be greater than light that organic illuminating element 313 the sends radiation intensity in 90 ° of directions itself, illustrate that the light that this structure can allow organic illuminating element 313 send appears organic luminous panel by refraction, and the light appearing is gathered in the direction of vertical panel, and under simulated conditions, the structure of the organic electroluminescence display panel of embodiment tri-is higher than the utilance of a pair of light energy of embodiment.
In the another kind of execution mode of embodiment tri-, light shield layer 321 is made into the frustum of a pyramid bodily form, with reference to Figure 14, the schematic cross-section of the organic electroluminescence display panel structure that Figure 14 provides for the another kind of execution mode of the embodiment of the present invention three, wherein the cross sectional shape of light shield layer 321 is trapezoidal.Figure 15 is the shape schematic diagram of light shield layer 321, described light shield layer 321 be shaped as the frustum of a pyramid bodily form.Light shield layer 321 is bottom surface near a side of cover plate, base area is larger, to hide the shading region 325 of cover plate, light shield layer 321 is end face away from a side of cover plate, described top surface area is less than described base area, but do not have strict restriction for the size of end face, end face at light shield layer 321 arranges reflector 322 towards a side of array base palte, reflector is also provided with upper microprism 324 towards a side of array base palte, preferably, between the reflector 322 and upper microprism 324 of cover plate, also there is a planarization layer, planarization layer can improve the uneven of the lid surface that light shield layer 321 and reflector 322 causes, make to be easier to form microprism 324 at cover plate in the face of a side of array base palte, and make the upper microprism 324 of formation more even.。In present embodiment, because light shield layer 321 is the frustum of a pyramid bodily form, the light that edge blocks still less, can improve the light emission rate of organic electroluminescence display panel.The display effect of the organic electroluminescence display panel to present embodiment is carried out analog simulation, identical with the emulation mode of the first execution mode of embodiment tri-.
The light energy that photo-detector 10 detects is 2.3596W, the light energy that namely appears this organic electroluminescence display panel is 2.3596W, 2.3596W/5W=0.47192, thereby the organic electroluminescence display panel of the another kind of execution mode of embodiment tri-is 47.192% to the utilance of light.
Figure 16 (a) is the received light energy angular distribution figure of emulation experiment photo-detector of the another kind of execution mode of embodiment tri-, radius coordinate is light energy (W), angular coordinate be angle (°), from Figure 16 (a), the light energy major part that photo-detector 10 detects is distributed in 90 ° of directions, namely in the direction of vertical organic electroluminescence display panel.The light that organic illuminating element 313 itself sends meets lambertian distribution, and the radiation intensity in 90 ° of directions is 1.3W/Sr.Figure 16 (b) is the received luminous flux angular distribution figure of emulation experiment photo-detector of the another kind of execution mode of embodiment tri-, in figure abscissa be angle (°), ordinate is radiation intensity (W/Sr), from Figure 16 (b), the radiation intensity of the light that photo-detector 10 detects in 90 ° of directions is 2.1W/Sr, be greater than light that organic illuminating element 313 the sends radiation intensity in 90 ° of directions itself, illustrate that the light that this structure can allow organic illuminating element 313 send appears organic luminous panel by refraction, and the light appearing is gathered in the direction of vertical panel, and under simulated conditions, the structure of the organic electroluminescence display panel of the another kind of execution mode of embodiment tri-is higher to the utilance of light energy than the first execution mode of embodiment tri-.
Embodiment tetra-
Organic illuminating element in the organic electroluminescence display panel that the embodiment of the present invention provides can adopt the organic illuminating element of sending out colourama, also can adopt the organic illuminating element of the coloured light that turns white, embodiment tetra-provides the organic electroluminescence display panel of the organic illuminating element that a kind of employing turns white coloured light.The turn white structure of organic electroluminescence display panel of organic illuminating element of coloured light of the employing that embodiment tetra-provides is identical with other embodiment, difference is, in the time that the organic illuminating element of coloured light is turned white in employing, color film need to be set on the cover plate of organic electroluminescence display panel.Figure 17 is the schematic top plan view of the organic electroluminescence display panel of embodiment tetra-, with reference to Figure 17, color film is at least arranged on the transparent area 426 of cover plate around region 426R, 426G, the 426B of shading region 425, can red color film be set at region 426R, at region 426G, green tint film is set, at region 426B, blue color film is set, because shading region 425 is light tight, thereby also can color film be set in shading region 425, can not affect display effect.Remaining part on cover plate comprises that microprism, reflector should be arranged on the side near array base palte on color film, and light shield layer can be arranged on the side near array base palte on color film, also can be arranged on the side away from array base palte on color film.
Embodiment five
The embodiment of the present invention five provides a kind of manufacture method of organic electroluminescence display panel, and with reference to Figure 18, the manufacture method of described organic electroluminescence display panel comprises the following steps:
Step S1: array basal plate is provided, and described array base palte has pixel luminous zone and pixel separation district, and described pixel luminous zone is provided with lower microprism.
Step S2 a: cover plate is provided, and described cover plate has shading region and transparent area, is at least provided with microprism in described transparent area.
Step S3: by described array base palte and the relative laminating in medium atmosphere of described cover plate, or spread medium on arbitrary in array base palte and cover plate, then fit relative with described cover plate described array base palte, described in when laminating, pixel luminous zone is corresponding with described shading region, and described pixel separation district is corresponding with described transparent area.
Because step S1 and step S2 are two separate steps, therefore also can first carry out step S2, and then carry out step S1, or step S1 and step S2 carry out simultaneously.
Particularly, step S1 provides array basal plate to comprise the following steps:
Step S1.1 a: first substrate is provided, and described first substrate is selected transparent glass substrate conventionally, also can adopt resin substrate or flexible base, board.
Step S1.2: set pixel luminous zone and pixel separation district on described first substrate, divide certain region for the different parts of follow-up formation by first substrate.
Step S1.3: form pixel defining layer in described pixel separation district, by forming pixel defining layer and be patterned on substrate, only in pixel separation block reservation pixel defining layer.
Pixel defining layer can adopt shading and antireflecting material, such as black matrix material etc.
Pixel defining layer can also be made into sandwich construction, and in the time that pixel defining layer has at least two-layer structure, that one deck of the most close cover plate can adopt antireflecting material, and described any one or more layers at least two-layer can adopt light screening material.
Step S1.4: form organic illuminating element in described pixel luminous zone; first form anode layer in pixel luminous zone; anode layer adopts metal material conventionally; then on anode layer, form organic luminous layer; finally on organic luminous layer, form cathode layer; cathode layer adopts transparent conductive material conventionally, and as tin indium oxide (ITO) etc., cathode layer can cover pixel luminous zone and pixel separation district conventionally.
Preferably, target layer carries out patterning, removes in whole or in part the cathode layer in pixel separation district.
Step S1.5: microprism under forming in described pixel luminous zone, described lower microprism covers on described organic illuminating element.Lower microprism uses transparent material, can use organic material, inorganic material or organic-inorganic composite material etc.As organic material, generally can use resin material, particularly ultraviolet curable resin, electron beam curing resin ionising radiation curable resin, thermosetting resin, thermoplastic resin or analog etc., can adopt photoetching process, or use the lower microprism of the formation such as ultraviolet-curing resin micro-contact-printing.Preferably, lower microprism is covered with whole pixel luminous zone.
Particularly, provide a cover plate to comprise the following steps:
Step S2.1 a: second substrate is provided, and described second substrate is selected transparent glass substrate conventionally, also can adopt resin substrate or flexible base, board.
Step S2.2: set shading region and transparent area on described second substrate, divide certain region for the different parts of follow-up formation by second substrate.
Step S2.3: form light shield layer in described shading region, light shield layer can adopt black matrix, adopts photoetching process to make.
Preferably, the shape of light shield layer is made into the frustum of a pyramid bodily form, light shield layer is bottom surface near a side of transparent cover plate, base area is larger, to hide the predetermined shading region of cover plate, light shield layer is end face away from a side of cover plate, and described top surface area is less than described base area, but does not have strict restriction for the size of end face.
Step S2.4: at least form microprism in the transparent area of described cover plate, upper microprism uses transparent material, can use organic material, inorganic material or organic-inorganic composite material etc.As organic material, generally can use resin material, particularly ultraviolet curable resin, electron beam curing resin ionising radiation curable resin, thermosetting resin, thermoplastic resin or analog etc., can adopt photoetching process, or use the upper microprism of the formation such as ultraviolet-curing resin micro-contact-printing; Upper microprism is preferably covered with whole predetermined transparent area, preferably, all forms microprism in predetermined transparent area and the shading region of transparent cover plate.
Preferably, before step S2.4 arranges microprism on described second substrate, be also included in the light shield layer inner surface relative with described array base palte on described second substrate and arrange the step in reflector, reflector can be used metal material.

Claims (25)

1. an organic electroluminescence display panel, described organic electroluminescence display panel comprises:
Array base palte, has pixel luminous zone and pixel separation district, comprises the lower microprism that is arranged on described pixel luminous zone;
Cover plate, is oppositely arranged with described array base palte, has transparent area and shading region, comprises the upper microprism that is at least arranged on described transparent area, corresponding described pixel separation district, described transparent area, corresponding described pixel luminous zone, described shading region;
Medium, is filled in the space between described array base palte and described cover plate.
2. organic electroluminescence display panel according to claim 1, is characterized in that: described medium is transparent inert gas or drier.
3. organic electroluminescence display panel according to claim 1, is characterized in that: described organic electroluminescence display panel meets following formula:
Wherein, n p1for the refractive index of described lower microprism,
N p2for the refractive index of described upper microprism,
α is that the side of refraction and the angle of vertical described organic electroluminescence display panel direction occur described lower microprism light,
β is that the side of refraction and the angle of vertical described organic electroluminescence display panel direction occur described upper microprism light,
D be light described lower microprism with described on the microprism distance of point-to-point transmission in vertical organic electroluminescence display panel direction that refraction occurs,
L be light described lower microprism with described on the microprism distance of point-to-point transmission in parallel organic electroluminescence display panel direction that refraction occurs.
4. organic electroluminescence display panel according to claim 1, it is characterized in that: described array base palte comprises the organic illuminating element that is arranged on pixel luminous zone, described organic illuminating element comprises the anode layer, luminous organic material layer and the cathode layer that set gradually, and described upper microprism covers on organic illuminating element.
5. organic electroluminescence display panel according to claim 4, is characterized in that: the cathode layer of described organic illuminating element partly covers or do not cover the pixel separation district of described array base palte.
6. organic electroluminescence display panel according to claim 1, it is characterized in that: described array base palte is included as organic illuminating element and the wiring of signal is provided and is arranged on the pixel defining layer in pixel separation district, described pixel defining layer covers described for organic illuminating element provides on the wiring of signal, and described pixel defining layer adopts shading and antireflecting material.
7. organic electroluminescence display panel according to claim 1, is characterized in that: the shading region of described cover plate is also provided with microprism.
8. organic electroluminescence display panel according to claim 1, is characterized in that: the shading region of described cover plate is provided with black matrix.
9. organic electroluminescence display panel according to claim 8, is characterized in that: described black matrix be shaped as pyramid stage body.
10. organic electroluminescence display panel according to claim 1, is characterized in that: the refractive index of described lower microprism is less than the refractive index of described medium, and the refractive index of described upper microprism is less than the refractive index of described medium.
11. organic electroluminescence display panel according to claim 1, is characterized in that: described lower microprism be shaped as tri-prismoid or rectangular pyramid.
12. organic electroluminescence display panel according to claim 11, is characterized in that: the bottom surface quadrangle of described lower microprism rectangular pyramid is square or rectangle.
13. organic electroluminescence display panel according to claim 1, is characterized in that: described upper microprism be shaped as tri-prismoid or rectangular pyramid.
14. organic electroluminescence display panel according to claim 13, is characterized in that: the bottom surface quadrangle of described upper microprism rectangular pyramid is square or rectangle.
15. according to the arbitrary described organic electroluminescence display panel of claim 1-14, it is characterized in that: the shading region at described cover plate is provided with reflector towards a side of described array base palte.
16. a display unit, is characterized in that: described display unit comprises the organic electroluminescence display panel as described in as arbitrary in claim 1-15.
The manufacture method of 17. 1 kinds of organic electroluminescence display panels, is characterized in that:
Array basal plate is provided, and described array base palte has pixel luminous zone and pixel separation district, described picture
Element luminous zone is provided with lower microprism;
One cover plate is provided, and described cover plate has shading region and transparent area, is at least provided with microprism in described transparent area;
By described array base palte and the relative laminating in medium atmosphere of described cover plate, or spread medium on arbitrary in array base palte and cover plate, then fit relative with described cover plate described array base palte, described in when laminating, pixel luminous zone is corresponding with described shading region, and described pixel separation district is corresponding with described transparent area.
18. the manufacture method of organic electroluminescence display panel according to claim 17, is characterized in that: described in provide array basal plate to comprise the following steps,
One first substrate is provided;
On described first substrate, set pixel luminous zone and pixel separation district;
In described pixel luminous zone, form organic illuminating element;
Microprism under forming in described pixel luminous zone, described lower microprism covers on described organic illuminating element.
The manufacture method of 19. organic electroluminescence display panels according to claim 18, it is characterized in that: describedly in described pixel luminous zone, form organic illuminating element and comprise, form successively anode layer, luminous organic material layer, cathode layer, and target layer pattern, remove in whole or in part the cathode layer in described pixel separation district.
The manufacture method of 20. organic electroluminescence display panels according to claim 18, it is characterized in that: set pixel luminous zone and pixel separation district on described first substrate after, also be included in the step that forms pixel defining layer in described pixel separation district, described pixel defining layer adopts shading and antireflecting material.
21. the manufacture method of organic electroluminescence display panel according to claim 18, is characterized in that: described lower microprism adopts photoetching process or ultraviolet-curing resin micro-contact-printing to form.
22. the manufacture method of organic electroluminescence display panel according to claim 17, is characterized in that: described in provide a cover plate to comprise the following steps,
One second substrate is provided;
On described second substrate, set shading region and transparent area;
In described shading region, light shield layer is set;
Microprism is set in described transparent area.
The manufacture method of 23. organic electroluminescence display panels according to claim 22, is characterized in that: when described transparent area forms microprism, and microprism on described shading region also forms.
The manufacture method of 24. organic electroluminescence display panels according to claim 22, is characterized in that: after light shield layer being set in described shading region, be also included in described light shield layer and arrange towards a side of array base palte the step in reflector.
25. the manufacture method of organic electroluminescence display panel according to claim 22, is characterized in that: described upper microprism adopts photoetching process or ultraviolet-curing resin micro-contact-printing to form.
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