CN105679796A - Display panel and preparation method - Google Patents
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- CN105679796A CN105679796A CN201610038259.4A CN201610038259A CN105679796A CN 105679796 A CN105679796 A CN 105679796A CN 201610038259 A CN201610038259 A CN 201610038259A CN 105679796 A CN105679796 A CN 105679796A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 53
- 238000010025 steaming Methods 0.000 claims description 91
- 239000000463 material Substances 0.000 claims description 38
- 230000002093 peripheral effect Effects 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 11
- 238000000059 patterning Methods 0.000 claims description 5
- 239000003086 colorant Substances 0.000 abstract description 14
- 239000010410 layer Substances 0.000 description 99
- 238000007747 plating Methods 0.000 description 28
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000010422 painting Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000011368 organic material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- -1 and such as Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a display panel, which comprises a plurality of pixels, a substrate, a pixel definition layer and light-emitting layers, wherein the plurality of pixels are used for displaying images; the pixel definition layer is arranged on the substrate and comprises a plurality of openings corresponding to the plurality of pixels; the openings include first openings and second openings; the first openings are located in the surrounding region; the second openings are located in the middle region; the distance between two adjacent first openings is greater than that between two adjacent second openings; and the light-emitting layers are formed in the openings corresponding to the pixels. According to the display panel, the distance between two adjacent first openings of the pixel definition layer is greater than that between two adjacent second openings, so that the problem of color mixing of the light-emitting layers in the adjacent pixel regions with different colors can be avoided. The invention further provides a preparation method of the display panel.
Description
Technical field
The present invention relates to a kind of technique of display field, particularly relate to a kind of display panel and preparation method.
Background technology
Organic electroluminescent LED (OrganicLight-EmittingDiodes, it is called for short OLED) it is selfluminous element, it is not necessary to backlight, outward appearance is light, thin, and traditional liquid-crystal display (LCD) needs backlight to work, apparent size is thicker. Organic light emitting diode display low in energy consumption, visual angle width, screen response is fast, is to meet the following technology to display function requirement of people. Therefore, Organic Light Emitting Diode is expected to replace in the near future liquid-crystal display, has very high market potential.
Organic molecule photodiode is in making processes, relatively proven technique adopts vacuum evaporation technology at present, in device fabrication process, organic materials can be deposited on and be positioned on the substrate above evaporation source, for forming distinctive pattern, below substrate, it is glued with mask, mask leaves and designs typesetted opening in advance, final organic materials by the open area on mask plate, can be deposited to above substrate.
The realization of OLED multicolor regions is generally steam the different organic material layer of plating by region to realize, and steam be coated with do be undertaken by the mode of mask, so plating is steamed in region just needs mask plate region openings, and therefore OLED multicolor regions just needs to use different mask plates to make distinct colors respectively. And existing technology, in whole mask plate region, the size of the mask plate sub-pixel opening light-emitting zone effective in sub-pixel of homochromy luminous organic layer is consistent. In process of production, by positioning mechanism make mask plate sub-pixel open area and substrate steam plating pattern corresponding and tightly after laminating, organic materials is exactly steamed by the open area of mask plate to be plated on counterpart substrate pattern; But in actual production process, it is limited in the Flatness of mask plate carrying platform, substrate distortion amount and positioning mechanism the impact of the factor such as magnetic force size and magnetic force homogeneity, gap is there is between local mask plate and baseplate-laminating, other adjacent color pattern regions can not effectively be blocked in mask plate shielding region when steaming a kind of color of plating in the region causing existing gap like this, the pattern of other colors is made to be coated with the organic materials not needed in evaporate process, when causing lighting there is colour mixture defect in whole substrate, causes substrate to scrap.
Summary of the invention
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of display panel and preparation method, to improve the colour mixture defect of display panel, promote good rate.
A kind of display panel, comprises multiple pixel for showing image, comprising:
Substrate;
Pixel defining layer, it is arranged at described substrate, described pixel defining layer has the multiple openings corresponding with multiple pixel, described opening comprises the first opening being positioned at peripheral regions, and it is positioned at the 2nd opening of region intermediate, wherein, the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings;
Luminescent layer, is formed in the described opening corresponding with described pixel.
Wherein in an embodiment, the width of described first opening is less than the width of described 2nd opening.
Wherein in an embodiment, the spacing of adjacent two described first openings of described pixel defining layer is 1.01～1.20 with the spacing ratio of adjacent two described 2nd openings.
Wherein in an embodiment, described opening is array distribution.
A preparation method for display panel, comprises the steps:
Forming the pixel defining layer with multiple opening on substrate, described opening comprises the first opening being positioned at peripheral regions, and is positioned at the 2nd opening of region intermediate;
Mask plate is utilized to make luminescent layer be formed in the opening corresponding with described pixel, described mask plate comprises multiple steaming plated hole, luminescent material is deposited in described opening by the described steaming plated hole of described mask plate, form luminescent layer, described steaming plated hole is array distribution, comprise the first steaming plated hole being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole of region intermediate;
Wherein, the spacing of adjacent two described first openings of described pixel defining layer is greater than the spacing of adjacent two described 2nd openings; Or, the width of the described first steaming plated hole of described mask plate is less than the width of described 2nd steaming plated hole.
Wherein in an embodiment, the spacing of adjacent two described first openings of described pixel defining layer is 1.01～1.20 with the spacing ratio of adjacent two described 2nd openings.
Wherein in an embodiment, the spacing of adjacent two the described first steaming plated hole of described mask plate is greater than the spacing of adjacent two described 2nd steaming plated hole.
Wherein in an embodiment, the ratio of the width of the described first steaming plated hole of described mask plate and the width of described 2nd steaming plated hole is 0.80～0.99.
Wherein in an embodiment, the top width of the described steaming plated hole of described mask plate is less than the width bottom described steaming plated hole.
Wherein in an embodiment, substrate forms the pixel defining layer with multiple opening, realizes as follows:
Substrate is formed pixel definition material layer;
By pixel definition material layer described in composition for patterning, to form the pixel defining layer with multiple opening.
The preparation method of above-mentioned display panel, by making the spacing of adjacent first opening of pixel defining layer be less than the spacing of adjacent 2nd opening, or, the width making mask plate first steam plated hole is less than the width of the 2nd steaming plated hole, the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours can be effectively prevent, improve and steam the good rate of plating.
Accompanying drawing explanation
Fig. 1 is the structural representation of display panel in one embodiment of the invention;
Fig. 2 is the partial schematic diagram of another angle of display panel in one embodiment of the invention;
Fig. 3 is prior art display panel and the mask plate local structure schematic diagram in display panel preparation process;
Fig. 4 is local structure schematic diagram in display panel preparation process of display panel and mask plate in one embodiment of the invention;
Fig. 5 is the structural representation of mask plate in one embodiment of the invention;
Fig. 6 is local structure schematic diagram in display panel preparation process of display panel and mask plate in another embodiment of the present invention;
Fig. 7 is local structure schematic diagram in display panel preparation process of display panel and mask plate in another embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose, the feature and advantage of the present invention more become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail. Set forth a lot of detail in the following description so that fully understanding the present invention. But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar improvement when not running counter to intension of the present invention, therefore the present invention is not by the restriction of following public specific embodiment.
Referring to Fig. 1 and Fig. 2, it is respectively in one embodiment of the invention the structural representation of display panel and the partial schematic diagram of another angle.
Display panel 10, comprise multiple pixel for showing image, comprise: substrate 100, pixel defining layer 200 and luminescent layer 300, pixel defining layer 200 is arranged at substrate 100, pixel defining layer 200 has the multiple openings 210 corresponding with multiple pixel, opening 210 comprises the first opening 211 being positioned at peripheral regions, and it is positioned at the 2nd opening 212 of region intermediate, the spacing of adjacent two the first openings 211 is greater than the spacing of adjacent two the 2nd openings 212, and luminescent layer 300 is formed in the opening 210 corresponding with pixel.
Specifically, the spacing of adjacent two the first openings 211 of pixel defining layer 200 is 1.01～1.20 with the ratio of the spacing of adjacent two the 2nd openings 212, further, the spacing of adjacent two the first openings 211 of pixel defining layer 200 is 1.01～1.10 with the ratio of the spacing of adjacent two the 2nd openings 212, like this, display panel region intermediate and the problem of peripheral regions non-uniform light can be avoided, the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours can also be avoided simultaneously.
In an embodiment of the present invention, the spacing between the adjacent apertures 210 of pixel defining layer 200 increases from region intermediate gradually to peripheral regions, avoids the problem of the luminescent layer colour mixture of the pixel region of the adjacent different colours of peripheral regions better.
Referring to Fig. 2, the width of the first opening 211 is less than the width of the 2nd opening 212. In other words, by distance to increase between adjacent two the first openings 211 of the width that reduces by the first opening 211, that is, make peripheral regions equal with the open amount in the unit surface of region intermediate, to avoid display panel peripheral regions and the problem of region intermediate non-uniform light.
In the present embodiment, pixel defining layer 200 is also provided with cushion block 220, to support display panel, prevents from display panel is caused damage by encapsulation process.
Above-mentioned display panel, the spacing being positioned at adjacent two the first openings due to pixel defining layer is greater than the spacing of adjacent two the 2nd openings, it is possible to avoid the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours.
The present invention provides the preparation method of a kind of display panel, comprises the steps:
S110, substrate is formed there is the pixel defining layer of multiple opening.
Specifically, step S110 comprises the steps:
S111, on substrate, form pixel definition material layer.
Specifically, on substrate, pixel definition material layer is formed by revolving painting, scrape the methods such as painting. Such as, described pixel definition material layer is photoresist layer.
It should be noted that, the substrate in the embodiment of the present invention forms the substrate before pixel defining layer, and it can be substrate can also be the structure obtained forming multiple film or layer on substrate, and such as, substrate is glass, silicon chip, quartz etc.
S112, by pixel definition material layer described in composition for patterning, to form the pixel defining layer with multiple opening, described opening is made to comprise the first opening being positioned at peripheral regions, and be positioned at the 2nd opening of region intermediate, and the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings.
Such as, mask plate is utilized by composition technique, described pixel definition material layer to be exposed, developed, to form the pixel defining layer with multiple opening on described pixel definition material layer, described opening is made to comprise the first opening being positioned at peripheral regions, and be positioned at the 2nd opening of region intermediate, and the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings. Specifically, the spacing of adjacent two the first openings is 1.01～1.20 with the ratio of the spacing of adjacent two the 2nd openings, and further, the spacing of adjacent two the first openings is 1.01～1.10 with the ratio of the spacing of adjacent two the 2nd openings.
It should be noted that, for the ease of encapsulation, it is to increase encapsulate good rate, after forming pixel defining layer, also it is included in pixel defining layer and forms cushion block, to support display panel, prevent from display panel is caused damage by encapsulation process.
S120, mask plate is utilized to make luminescent layer be formed in the opening corresponding with described pixel, described mask plate comprises the steaming plated hole steaming the multiple distribution in array of plated hole, luminescent material is deposited in described opening by the described steaming plated hole of described mask plate, forms luminescent layer.
It is appreciated that, in actual production, it is limited to the factor such as magnetic force size and magnetic force homogeneity impact in the distortion amount of substrate, the Flatness of mask plate carrying platform, positioning mechanism, gap is there is, and the not good region of substrate and attaching mask is generally positioned at the surrounding of substrate between substrate and mask plate. referring to Fig. 3, it is prior art display panel and the mask plate local structure schematic diagram in display panel preparation process. due in prior art, in display panel, spacing between the opening 210 of pixel defining layer 200 peripheral regions is equal with the spacing of the opening 210 of region intermediate, luminescent material is steamed the opening 210 being plating to pixel to be deposited when forming luminescent layer, refer to Fig. 3, the luminescent material of peripheral regions can enter the region of the non-opening 210 steaming plating pixel beyond the opening 210 of pixel to be deposited by the steaming plating track that the steaming plated hole 201 of mask plate 20 is formed, such as, when red illuminating material needs steaming to be plating in opening corresponding to red pixel 210, due to the laminating gap between substrate 100 and mask plate 20, red illuminating material may be steamed by the steaming plated hole 201 of mask plate 20 and be plating in the adjacent green pixel of the opening 210 corresponding with red pixel or opening 210 corresponding to blue pixel, cause mixed color phenomenon.
Referring to Fig. 4, it is local structure schematic diagram in display panel preparation process of display panel and mask plate in one embodiment of the invention. see also Fig. 5, due to the spacing that the spacing between adjacent two the first openings 211 of pixel defining layer 200 is greater than between adjacent two the 2nd openings 212, the width of pixel defining layer 200 first opening 211 is less than the width of the 2nd opening 212 simultaneously, luminescent material is steamed the opening 210 being plating to pixel to be deposited when forming luminescent layer, peripheral regions luminescent material can not enter in other non-first openings 211 steaming plating pixel by the steaming plating track that the steaming plated hole 201 of mask plate 20 is formed, effectively prevent the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours, improve and steam the good rate of plating.
Further, the ratio of spacing between adjacent two the first openings 211 of described pixel defining layer and the spacing between adjacent two the 2nd openings is 1.01～1.20, further, the ratio of spacing between adjacent two the first openings 211 of described pixel defining layer and the spacing between adjacent two the 2nd openings is 1.01～1.10, to avoid display panel region intermediate and the problem of peripheral regions non-uniform light, the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours can also be avoided simultaneously.
In the present embodiment, the first opening 211 is arranged around the 2nd opening 212, and the area ratio of the peripheral regions at the first opening 211 place and the region intermediate at the 2nd opening 212 place is 1:2. In other embodiments, the area ratio of peripheral regions and region intermediate can according to substrate and attaching mask gap, mask plate Flatness, mask plate steams the precision of plated hole position, the precision of the steaming plated hole size of mask, the precision of pixel defining layer position, the size accuracy of pixel defining layer calculates.
The preparation method of above-mentioned display panel, by the spacing making the spacing between adjacent first opening be greater than between adjacent 2nd opening, it is possible to effectively prevent the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours, improves and steams the good rate of plating.
In another embodiment of the present invention, the preparation method of display panel, comprises the steps:
S210, substrate is formed comprise the pixel defining layer of multiple opening.
Specifically, step S210 comprises the steps:
S211, on substrate, form pixel definition material layer.
Specifically, on substrate, pixel definition material layer is formed by revolving painting, scrape the methods such as painting. Such as, described pixel definition material layer is photoresist layer.
It should be noted that, the substrate in the embodiment of the present invention forms the substrate before pixel defining layer, and it can be substrate can also be the structure obtained forming multiple film or layer on substrate.
S212, by pixel definition material layer described in composition for patterning, to form the pixel defining layer comprising multiple openings in array distribution.
Such as, utilizing mask plate by composition technique, described pixel definition material layer to be exposed, developed, to form the pixel defining layer of multiple opening on described pixel definition material layer, and the described opening of described pixel defining layer is all equal.
S220, mask plate is utilized to make luminescent layer be formed in the opening corresponding with described pixel, described mask plate comprises multiple steaming plated hole, luminescent material is deposited in described opening by the described steaming plated hole of described mask plate, form luminescent layer, described steaming plated hole is array distribution, comprise the first steaming plated hole being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole of region intermediate.
Referring to Fig. 5, it is the structural representation of mask plate in one embodiment of the invention. Mask plate 20 comprises the steaming plated hole of the distribution in array, comprise the first steaming plated hole 201 being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole 202 of region intermediate, and first the width of steaming plated hole 201 be less than the width of the 2nd steaming plated hole 202, adjacent two first spacing steamed between plated hole 201 are greater than adjacent two the 2nd and steam the spacing between plated hole 202. Specifically, the ratio of the width of the first steaming plated hole 201 and the width of the 2nd steaming plated hole 202 is 0.80～0.99. Further, the ratio of the width of the first steaming plated hole 201 and the width of the 2nd steaming plated hole 202 is 0.90～0.99.
In an embodiment of the present invention, the top width of the described steaming plated hole of mask plate 20 is less than the width bottom described steaming plated hole, that is, the width of described steaming plated hole near described substrate side is less than the width steaming plated hole away from described substrate side.
In the present embodiment, mask plate first steams the both sides that plated hole 201 is positioned at the 2nd steaming plating empty 202, and the area ratio of the peripheral regions at the first steaming plated hole 201 place and the region intermediate at the 2nd steaming plated hole 202 place is 1:3. In other embodiments, the area ratio that mask plate first steams plated hole region and the 2nd steaming plated hole region can according to substrate and attaching mask gap, mask plate Flatness, mask plate steams the precision of plated hole position, the precision of the steaming plated hole size of mask, the precision of pixel defining layer position, the size accuracy of pixel defining layer calculates.
Referring to Fig. 6, it is local structure schematic diagram in display panel preparation process of display panel and mask plate in one embodiment of the invention. Luminescent material is steamed the opening 210 being plating to pixel to be deposited when forming luminescent layer, the width steaming plated hole 201 due to mask plate 20 first is less than the width that the 2nd steams plated hole 202, the spacing that spacing between adjacent first steaming plated hole 201 is greater than between the 2nd steaming plated hole 202, peripheral regions luminescent material can not enter in other non-first openings 211 steaming plating pixel by the steaming plating track that the steaming plated hole 201 of mask plate 20 is formed, effectively prevent the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours, improve and steam the good rate of plating.
The preparation method of above-mentioned display panel, is less than the width of the 2nd steaming plated hole, it is possible to effectively prevent the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours, improves and steam the good rate of plating by the width making mask plate first steam plated hole.
In another embodiment of the present invention, the preparation method of display panel, comprises the steps:
S310, substrate is formed comprise the pixel defining layer of multiple opening.
Specifically, step S310 comprises the steps:
S311, on substrate, form pixel definition material layer.
Specifically, on substrate, pixel definition material layer is formed by revolving painting, scrape the methods such as painting. Such as, described pixel definition material layer is photoresist layer.
It should be noted that, the substrate in the embodiment of the present invention forms the substrate before pixel defining layer, and it can be substrate can also be the structure obtained forming multiple film or layer on substrate.
S312, by pixel definition material layer described in composition for patterning, to form the pixel defining layer comprising multiple openings in array distribution, described opening is made to comprise the first opening being positioned at peripheral regions, and be positioned at the 2nd opening of region intermediate, and the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings.
Such as, mask plate is utilized by composition technique, described pixel definition material layer to be exposed, developed, to form the pixel defining layer with multiple opening on described pixel definition material layer, described opening is made to comprise the first opening being positioned at peripheral regions, and be positioned at the 2nd opening of region intermediate, and the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings. Specifically, the spacing of adjacent two the first openings is 1.01～1.20 with the ratio of the spacing of adjacent two the 2nd openings. Further, the spacing of adjacent two the first openings is 1.01～1.10 with the ratio of the spacing of adjacent two the 2nd openings.
S320, mask plate is utilized to make luminescent layer be formed in the opening corresponding with described pixel, described mask plate comprises multiple steaming plated hole, luminescent material is deposited in described opening by the described steaming plated hole of described mask plate, form luminescent layer, described steaming plated hole is array distribution, comprise the first steaming plated hole being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole of region intermediate.
Specifically, mask plate 20 comprises the steaming plated hole of the distribution in array, comprise the first steaming plated hole 201 being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole 202 of region intermediate, and first the width of steaming plated hole 201 be less than the width of the 2nd steaming plated hole 202, adjacent two first spacing steamed between plated hole 201 are greater than adjacent two the 2nd and steam the spacing between plated hole 202.
Referring to Fig. 7, it is local structure schematic diagram in display panel preparation process of display panel and mask plate in one embodiment of the invention. luminescent material is steamed the opening 210 being plating to pixel to be deposited when forming luminescent layer, the width steaming plated hole 201 due to mask plate 20 first is less than the width that the 2nd steams plated hole 202, the spacing that spacing between adjacent first steaming plated hole 201 is greater than between the 2nd steaming plated hole 202, the spacing that simultaneously spacing between adjacent two the first openings 211 of pixel defining layer 200 is greater than between adjacent two the 2nd openings 212, the width of pixel defining layer 200 first opening 211 is less than the width of the 2nd opening 212 simultaneously, the luminescent material of peripheral regions can not enter in other non-first openings 211 steaming plating pixel by the steaming plating track that the steaming plated hole 201 of mask plate 20 is formed, effectively prevent the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours, improve and steam the good rate of plating.
Such as, spacing between adjacent two the first openings 211 of pixel defining layer is 1.05 with the ratio of the spacing of adjacent two the 2nd openings 212; Further, mask plate 20 first steams the ratio of the width of plated hole 201 and the width of the 2nd steaming plated hole 202 is 0.95; Like this, overall formation two layers of buffer structure, the luminescent material avoiding peripheral regions enters the region of the non-opening steaming plating pixel beyond the opening of pixel to be deposited by the steaming plating track that the steaming plated hole of mask plate is formed, thus prevent mixed color phenomenon ingeniously, there is good using value, the display panel being particularly suitable for intelligent terminal, is also applicable to large screen display.
The preparation method of above-mentioned display panel, by the spacing making the spacing between adjacent two the first openings of pixel defining layer be greater than between adjacent two the 2nd openings, or the width making mask plate first steam plated hole is less than the width of the 2nd steaming plated hole, the problem of the luminescent layer colour mixture of the pixel region of adjacent different colours can be effectively prevent, improve and steam the good rate of plating.
Each technology feature of the above embodiment can combine arbitrarily, for making description succinct, each all possible combination of technology feature in above-described embodiment is not all described, but, as long as the combination of these technology features does not exist contradiction, all it is considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several enforcement modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the inventive concept of the premise these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a display panel, comprises multiple pixel for showing image, it is characterised in that, comprising:
Substrate;
Pixel defining layer, it is arranged at described substrate, described pixel defining layer has the multiple openings corresponding with multiple pixel, described opening comprises the first opening being positioned at peripheral regions, and it is positioned at the 2nd opening of region intermediate, wherein, the spacing of adjacent two described first openings is greater than the spacing of adjacent two described 2nd openings;
Luminescent layer, is formed in the described opening corresponding with described pixel.
2. display panel according to claim 1, it is characterised in that, the width of described first opening is less than the width of described 2nd opening.
3. display panel according to claim 1, it is characterised in that, the spacing of adjacent two described first openings of described pixel defining layer is 1.01～1.20 with the spacing ratio of adjacent two described 2nd openings.
4. display panel according to claim 1, it is characterised in that, described opening is array distribution.
5. the preparation method of a display panel, it is characterised in that, comprise the steps:
Forming the pixel defining layer with multiple opening on substrate, described opening comprises the first opening being positioned at peripheral regions, and is positioned at the 2nd opening of region intermediate;
Mask plate is utilized to make luminescent layer be formed in the opening corresponding with described pixel, described mask plate comprises multiple steaming plated hole, luminescent material is deposited in described opening by the described steaming plated hole of described mask plate, form luminescent layer, described steaming plated hole is array distribution, comprise the first steaming plated hole being positioned at peripheral regions, and it is positioned at the 2nd steaming plated hole of region intermediate;
Wherein, the spacing of adjacent two described first openings of described pixel defining layer is greater than the spacing of adjacent two described 2nd openings; Or, the width of the described first steaming plated hole of described mask plate is less than the width of described 2nd steaming plated hole.
6. the preparation method of display panel according to claim 5, it is characterised in that, the spacing of adjacent two described first openings of described pixel defining layer is 1.01～1.2 with the spacing ratio of adjacent two described 2nd openings.
7. the preparation method of display panel according to claim 5, it is characterised in that, the spacing of adjacent two the described first steaming plated hole of described mask plate is greater than the spacing of adjacent two described 2nd steaming plated hole.
8. the preparation method of display panel according to claim 5, it is characterised in that, the ratio of the width of the described first steaming plated hole of described mask plate and the width of described 2nd steaming plated hole is 0.80～0.99.
9. the preparation method of display panel according to claim 5, it is characterised in that, the top width of the described steaming plated hole of described mask plate is less than the width bottom described steaming plated hole.
10. the preparation method of display panel according to claim 5, it is characterised in that, substrate is formed the pixel defining layer with multiple opening, realizes as follows:
Substrate is formed pixel definition material layer;
By pixel definition material layer described in composition for patterning, to form the pixel defining layer with multiple opening.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108598271A (en) * | 2018-04-19 | 2018-09-28 | 信利半导体有限公司 | The production method and color OLED substrate of color OLED substrate |
| CN108986676A (en) * | 2018-07-25 | 2018-12-11 | 京东方科技集团股份有限公司 | Mask plate, oled display substrate and preparation method thereof, display device |
| CN110098239A (en) * | 2019-05-17 | 2019-08-06 | 京东方科技集团股份有限公司 | Dot structure, display base plate, mask plate and evaporation coating method |
| CN111524932A (en) * | 2019-02-01 | 2020-08-11 | Oppo广东移动通信有限公司 | Electronic equipment, pixel structure and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106356395A (en) * | 2016-11-23 | 2017-01-25 | 信利（惠州）智能显示有限公司 | OLED image-forming device and preparation method thereof |
| CN106356395B (en) * | 2016-11-23 | 2019-01-18 | 信利（惠州）智能显示有限公司 | A kind of OLED imaging device and preparation method |
| CN107742638A (en) * | 2017-11-16 | 2018-02-27 | 信利（惠州）智能显示有限公司 | Pixel arrangement structure, organic electroluminescence device and display device |
| CN108598271A (en) * | 2018-04-19 | 2018-09-28 | 信利半导体有限公司 | The production method and color OLED substrate of color OLED substrate |
| CN108986676A (en) * | 2018-07-25 | 2018-12-11 | 京东方科技集团股份有限公司 | Mask plate, oled display substrate and preparation method thereof, display device |
| CN111524932A (en) * | 2019-02-01 | 2020-08-11 | Oppo广东移动通信有限公司 | Electronic equipment, pixel structure and display device |
| CN110098239A (en) * | 2019-05-17 | 2019-08-06 | 京东方科技集团股份有限公司 | Dot structure, display base plate, mask plate and evaporation coating method |
| US11626560B2 (en) | 2019-05-17 | 2023-04-11 | Mianyang Boe Optoelectronics Technology Co., Ltd. | Pixel structure, display substrate, mask and evaporation method |
| CN113630926A (en) * | 2020-05-07 | 2021-11-09 | 固安翌光科技有限公司 | Organic electroluminescent screen and preparation method thereof |
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