WO2019056792A1 - 封装掩膜板、封装方法及显示面板 - Google Patents

封装掩膜板、封装方法及显示面板 Download PDF

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Publication number
WO2019056792A1
WO2019056792A1 PCT/CN2018/089083 CN2018089083W WO2019056792A1 WO 2019056792 A1 WO2019056792 A1 WO 2019056792A1 CN 2018089083 W CN2018089083 W CN 2018089083W WO 2019056792 A1 WO2019056792 A1 WO 2019056792A1
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WIPO (PCT)
Prior art keywords
slit
package
width
line
slits
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Ceased
Application number
PCT/CN2018/089083
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English (en)
French (fr)
Inventor
邹敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Govisionox Optoelectronics Co Ltd
Original Assignee
Kunshan Govisionox Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Govisionox Optoelectronics Co Ltd filed Critical Kunshan Govisionox Optoelectronics Co Ltd
Priority to KR1020197022057A priority Critical patent/KR102373535B1/ko
Priority to JP2019541221A priority patent/JP7038127B2/ja
Priority to EP18859516.9A priority patent/EP3564933B1/en
Priority to US16/342,195 priority patent/US20190322580A1/en
Publication of WO2019056792A1 publication Critical patent/WO2019056792A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
    • H10W70/69—Insulating materials thereof
    • H10W70/692—Ceramics or glasses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties

Definitions

  • the present application relates to the field of display device technologies, and in particular, to a package mask, a package method, and a display panel.
  • display panels have been encapsulated with glass glue.
  • the glass glue is coated/printed on the edge of one of the substrates to form a package glue line, and then the other substrate is packaged with the previous substrate by the package glue line to protect the electron between the two substrates. element.
  • the height of the prepared package glue line may deviate from the design height, resulting in different height deviations of the package glue lines at the four edges of the substrate, resulting in inconsistent heights of the package edges of the four edges. .
  • the spacing between the two substrates after packaging is inconsistent everywhere, which causes the display panel to have a Newtonian ring phenomenon, which affects the quality of the product.
  • the present invention provides a package mask comprising a body and a package slit formed on the body, the package slit including a first slit group extending in a first direction and a second extending in a second direction a second slit group, the first slit group includes at least two first slits, and the second slit group includes at least two second slits, a width of the first slit in a second direction Greater than the width of the second slit group in the first direction.
  • the first slit group and the second slit group are in communication with each other.
  • the first slit set and the second package slit set are in a closed regular quadrilateral shape.
  • a ratio of a width of the first slit in the second direction to a width of the second slit in the first direction is 1.15:1 to 1.25:1.
  • the first slit has a width in the second direction of 300 ⁇ m to 700 ⁇ m
  • the second slit has a width in the first direction of 240 ⁇ m to 609 ⁇ m.
  • the present application also provides a packaging method for preparing a packaged region by using a mask as described above.
  • the encapsulating material glass glue is employed.
  • the present application also provides a display panel prepared by the encapsulation method as described above.
  • the first package line height and the second package line height are less than 5%.
  • the height of the first package line and the height of the second package line are 5.2 ⁇ m to 5.7 ⁇ m.
  • the package mask includes a body and a package slit formed through the body, the package slit includes a first slit group extending in a first direction and a second slit group extending in a second direction, the first slit The slit group includes at least two first slits, and the second slit group includes at least two second slits by making the width of the first slit in the second direction larger than the width of the second slit in the first direction When the material is printed on the substrate in the first direction, the second slit can have a smaller amount of ink permeation relative to the first slit, and a smaller amount of ink can be reduced.
  • FIG. 1 is a schematic view of a package mask and a direction of travel of a material scraping according to an embodiment of the present application.
  • IPS panel in-plane switching panel
  • the slit width is determined such that four package glue lines are respectively formed on the four edges of the first substrate, and the first substrate and the second substrate are packaged together by four glass glue lines, but often on the first substrate and the second substrate A Newtonian ring phenomenon occurs between them, which affects the packaging effect of the display panel.
  • the inventors of the present application have found that, in the display panel prepared by the above scheme, the final heights of the four package glue lines are inconsistent, resulting in a gap between the first substrate and the second substrate after being packaged, thereby generating a Newton's ring phenomenon.
  • the inventors have also unexpectedly discovered that there is a deviation between the final width of the four package glue lines and the design width, and the tendency of the deviation is inconsistent. Even if the design width of the four package lines is the same, the deviation of the final width of the four package lines is different after printing with the mask. On the basis of this finding, the inventors have proposed this application through further research.
  • the present application provides a package mask comprising a body and a package slit formed on the body, the package slit including a first slit group extending in a first direction and a second direction a second slit group extending, the first slit group includes at least a first slit, and the second slit group includes at least two second slits, the width of the first slit in the second direction is greater than the second slit The width in the first direction.
  • the first package line is prepared corresponding to the first slit
  • the second package line is prepared corresponding to the second slit.
  • the body may be in the shape of a plate.
  • the second slit By making the width of the first slit in the second direction larger than the width of the second slit in the first direction, when the material is printed onto the substrate in the first direction, the second slit can be made opposite to the second slit
  • the first slit has a small amount of ink permeation, and the small amount of ink permeation can reduce the contact area with the scraping, thereby reducing the pressure of the scraped material, thereby improving the second encapsulation formed based on the second slit.
  • the height of the glue line is equal to the height of the first package line formed by the first slit, so that the distance between the two substrates of the display panel is equal, and the Newton ring is avoided to improve the quality of the display panel.
  • the first slit group and the second slit group are in communication with each other.
  • the plurality of first slits included in the first slit group and the plurality of second slits included in the second slit group cross each other to form a mesh structure on the mask, and the shape of the mesh structure is performed according to packaging requirements.
  • the first set of slits and the second set of package slits are in the form of a closed regular quadrilateral to form a closed regular quadrilateral glue line on the substrate.
  • FIG. 1 a mask of a printed structural unit having a closed regular quadrilateral is shown.
  • the direction of the arrow indicates the printing direction of the material scraper 3, and the printing direction is the same as the first direction.
  • the process of printing the glass glue on the substrate is to set the mask plate on the substrate, and apply the sealing glue in the first slit group and the second slit group, and then scrape the surface on the mask surface according to the first In one direction, the encapsulant is pressed into the first slit 10 of the first slit group and the second slit 20 of the second slit group while scraping excess package glue. Thereby, an end-to-end package glue line is formed in the first slit group and the second slit group of the mask of one package structure unit.
  • the first package line is prepared based on the first slit 10
  • the second package line is prepared based on the second slit 20.
  • the contact area ratio of the scraper 3 to the first slit 10 is smaller than the contact area of the second slit 20, and the sealant in the first slit 10 is subjected to the pressure of the scraper 3. Also relatively small, such that the final width of the first package line deviates from the width of the first slit 10 in the second direction relative to the final width of the second package line from the second slit 20 in the first direction The extent of the width is low, and the final height of the first package line is higher relative to the final height of the second package line.
  • the contact area of the first slit 10 and the scraper 3 can be increased for compensating the first slit 10 along the edge.
  • the first direction extends the difference between the contact area of the scraper 3 and the contact area of the second slit 20 extending in the second direction and the scraper 3, so that the amount of ink permeation in the first slit 10 can be increased. That is, the amount of the encapsulant entering the first slit 10 is increased, thereby increasing the pressure of the material scraping 3 entering the encapsulant in the first slit 10 to reduce the first formation of the encapsulant in the first slit 10.
  • the height of the package glue line ultimately makes the final height of the first package line and the final height of the second package line uniform.
  • the width ratio of the first slit 10 in the second direction to the width of the second slit 20 in the first direction is 1.15:1 to 1.25:1.
  • the present application has found through research that the final width obtained has a certain relationship with the final height under the same slit width.
  • Further adjusting the width of the first slit 10 in the second direction by adjusting the different influences of the first slit group and the package line prepared based on the second slit group according to the printing direction (the direction in which the scraper 3 travels)
  • the width ratio of the second slit 20 in the first direction is 1.15:1 to 1.25:1 to finally offset the different influences of the printing direction on the package line based on the first slit group and the second slit group.
  • the final width of the first package glue line is the same as the final width of the second package glue line, the final height of the first package glue line and the final height of the second package glue line, thereby avoiding the first package line and the first package line.
  • the distance between the two substrates after the two package glue line package is inconsistent everywhere and the Newton ring phenomenon occurs.
  • the width of the first slit 10 in the second direction is 300 ⁇ m to 700 ⁇ m
  • the width of the second slit 20 in the first direction is 240 ⁇ m to 609 ⁇ m.
  • the width of the first slit 10 in the second direction 300 ⁇ m to 700 ⁇ m is 240 ⁇ m to 609 ⁇ m, and the first package line and the second layer can be made after printing.
  • the final width of the package glue line is within a suitable range, which satisfies the packaging requirements of the display panel, and further improves the packaging effect.
  • the width of the first slit 10 in the second direction and the width of the second slit 20 in the first direction are designed according to the product size and the size of the product frame, or are designed according to the packaging effect. Generally, the larger the slit width, the larger the corresponding sealant line width and the better the sealing effect.
  • the second aspect of the present application further provides a packaging method, wherein the package area is prepared by using the mask plate, the first package line is formed corresponding to the first slit group, and the second package glue is formed corresponding to the second slit group. line. Since the above mask has the above technical effects, the packaging method using the above mask for packaging should also have the same technical effect, and will not be described in detail herein.
  • the encapsulation method comprises the following steps:
  • the scraper 3 is advanced in the first direction on the surface of the mask, and the encapsulant is pressed into the first slit group and the second slit group, and the excess encapsulant is scraped off.
  • the encapsulating material used is glass glue.
  • the viscosity of the glass glue is from 40,000 cps to 200,000 cps.
  • the flowability of the glass glue is controlled within a certain range to ensure that the final height of the package line is within the required range.
  • the third direction of the present application also provides a display panel which is prepared by the above packaging method. Since the above packaging method has the above technical effects, the display panel prepared by the above packaging method should also have the same technical effect, and will not be described in detail herein.
  • the uniformity of the first package line height and the second package line height is ⁇ 5%.
  • the display panel adopts the above packaging method, and can significantly improve the uniformity of the height of the first package rubber line and the second package glue line, and the uniformity of the height of the first package glue line and the second package glue line is reduced to 5%, and the package is packaged.
  • the pitches of the two substrates of the obtained display panel are equal, and it is possible to avoid the generation of Newton's rings due to the uneven pitch, thereby improving the quality of the display panel.
  • the height of the first package glue line and the height of the second package glue line are 5.2 ⁇ m to 5.7 ⁇ m. It can meet the packaging requirements of the display panel and further improve the packaging effect.
  • a mask package having a width of the first slit 10 in the second direction of 450 ⁇ m and a width of the second slit 20 in the first direction of 450 ⁇ m was subjected to bulk packaging production, and the obtained statistical data is shown in Table 1.
  • a mask package having a width of the first slit 10 in the second direction of 550 ⁇ m and a width of the second slit 20 in the first direction of 450 ⁇ m was subjected to bulk packaging production, and the obtained statistical data is shown in Table 2.
  • the slits are the first slit 10 and the second slit 20 corresponding to the first package line and the second package line, respectively.
  • the final value is the average of the final width/height of the batch product.
  • the deviation value is the difference between the final value minus the preset value.
  • homogeneity (maximum-minimum value) / (maximum value + minimum value)
  • the maximum value is the maximum value of the final width/height in the batch product
  • the minimum value is the minimum of the final width/height in the batch product.
  • the value by calculating the uniformity, can be used to know the deviation of the final width/height of the package line from the preset width/height.
  • the preset width is a corresponding slit width
  • the preset height is a corresponding slit depth.
  • the first prepared 10 in the case where the width of the first slit 10 of the mask in the second direction is the same as the width of the second slit 20 in the first direction The final width of the package glue line and the second package glue line are different, and the deviation trend of the final width is also different. Further, the final heights of the first package rubber line and the second package glue line are different, and the deviation trend of the final height is also different. Further, the final width of the first package line and the second package line have a certain relationship with the final height. The larger the final width of the package line, the lower the final height. Conversely, the smaller the final width of the package line, the higher the final height.
  • the present application performs the width of the first slit 10 in the second direction and the width of the second slit 20 in the first direction based on the final width of the first package glue line, the second package glue line, and the final height analysis. Derivation.
  • the slit width is the width of the first slit 10 corresponding to the first package line and the second package line in the second direction, and the second slit 20 is in the first direction. width.
  • the cross-sectional area of the glue line is a longitudinal cross-sectional area of the first package glue line in the second direction or a longitudinal cross-sectional area of the second package glue line in the first direction.
  • V 2 V 4
  • L 2 L 4
  • H 2 H 4 .
  • the second package line of Comparative Example 1 and the second package line of Embodiment 1 are both package lines extending in the second direction perpendicular to the printing direction, and the final width is in the first direction with respect to the second slit 20.
  • the width of the width is consistent, and the resulting final width is also close.
  • the first package line of Comparative Example 1 and the first package line of Embodiment 1 are both package lines extending in the first direction parallel to the printing direction, and the final width of the package width should be consistent with respect to the slit width. The final width obtained is also close.
  • the widths of the slits corresponding to the mutually parallel package lines can be made the same, so that the final width and final height of the two mutually parallel package lines are the same.
  • the first package glue line of Comparative Example 1 is a package glue line extending in a first direction parallel to the printing direction
  • the second package glue line is a package glue line extending in a second direction perpendicular to the printing direction, respectively corresponding to
  • the width of the first slit 10 in the second direction is the same as the width of the second slit 20 in the first direction, but the final width and final height of the first package line and the second package line are different.
  • the final width of a package line is narrower than the final width of the second package line, and the final height of the first package line is higher than the final height of the second package line.
  • the final width of the first package line needs to be increased according to the concept of the present application, that is, the first package line needs to be relatively increased.
  • the width of the first slit 10 in the second direction is the width of the first slit 10 in the second direction.
  • the first encapsulant line of Embodiment 1 is an encapsulant line extending in a first direction parallel to the printing direction
  • the second encapsulant line of Embodiment 1 is a package line extending in a second direction perpendicular to the printing direction.
  • the width of the first slit 10 corresponding to the two in the second direction is different from the width of the second slit 20 in the first direction, but the obtained first package line is closer to the final height of the second package line. Therefore, if it is proved that the final height of the first package line and the second package line are the same, the width of the corresponding first slit 10 in the second direction and the second slit 20 in the first direction need to be adjusted accordingly. width.
  • the present application finds that the ratio of the width of the first slit 10 in the second direction to the width of the second slit 20 in the first direction is set to be 1.15:1 to 1.25:1 by a large amount of data statistics, which can offset the first
  • the sealing material in a slit 10 and the material scraping 3 received by the encapsulating material in the second slit 20 have different degrees of pressure, so that the final height of the obtained first encapsulant line and the second encapsulant line are uniform, preventing The Newton ring is produced.
  • the final height of the first package glue line and the second package glue line are also consistent, which also helps to improve the packaging effect, improve the sealing effect, and improve water blocking and oxygen resistance.
  • the ratio of the width of the first slit 10 in the second direction to the width of the second slit 20 in the first direction is 1.15:1 to 1.25:1, so that the first package line and the second package line can be made.
  • the final height is 5.2 ⁇ m ⁇ 5.7 ⁇ m, which meets the sealing requirements.
  • the ratio of the width of the first slit 10 in the second direction to the width of the second slit 20 in the first direction is set to 1.2:1, and the first package line and the second package line can be further improved.
  • the final height uniformity controls the final height of the first package line and the second package line to be between 5.3 ⁇ m and 5.6 ⁇ m.
  • the first slit 10 and the second slit group are closed regular quadrangles, and the first slit 10 has a width of 550 ⁇ m in the second direction and the second slit 20 has a width of 450 ⁇ m in the first direction.
  • the package is produced in batches, and the obtained statistical data is shown in Table 4.
  • the slits are the first slit 10 and the second slit 20 corresponding to the first package rubber line and the second package glue line, respectively.
  • the final value is the average of the final width/height of the batch product.
  • the deviation value is the difference between the final value minus the preset value.

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Abstract

一种封装掩膜板，包括主体和形成在主体上的封装狭缝，封装狭缝包括沿第一方向延伸的第一狭缝组和沿第二方向延伸的第二狭缝组，第一狭缝组包括至少两条第一狭缝（10），第二狭缝组包括至少两条第二狭缝（20），第一狭缝（10）在第二方向上的宽度大于第二狭缝（20）在第一方向上的宽度。在料刮（3）沿第一方向将封装材料印刷到基板上时，能够使第二狭缝（20）相对于第一狭缝（10）具有较小的透墨量，较小的透墨量能够减小与料刮（3）的接触面积，从而降低收到的料刮（3）的压力，因而能够提高基于第二狭缝（20）形成的第二封装胶线的高度与基于第一狭缝（10）形成的第一封装胶线的高度均一性，使显示面板的两块基板封装后各处的间距相等，避免产生牛顿环，提高显示面板的品质。

Description

封装掩膜板、封装方法及显示面板 技术领域
本申请涉及显示器件技术领域，特别是涉及一种封装掩膜板、封装方法及显示面板。
背景技术
传统地，显示面板采用玻璃胶进行封装。玻璃胶按设计宽度被涂布/印刷在其中一基板的边缘，以形成封装胶线，之后利用该封装胶线将另一基板与前一基板封装在一起，以保护位于两基板之间的电子元件。
在实际生产过程中，制备的封装胶线的高度可能会偏离设计高度，从而在基板的四个边缘处产生各异的封装胶线的高度偏差，最终导致四个边缘的封装胶线的高度不一致。这样，两块基板封装后之间的间距在各处不一致，从而使显示面板产生牛顿环现象，影响产品的质量。
发明内容
基于此，有必要针对玻璃胶封装时封装胶线高度与设计高度具有不同趋势的偏差所导致的显示面板产生牛顿环现象的问题，提供一种封装掩膜板、封装方法及显示面板。
本申请提供的一种封装掩膜板，包括主体和形成在所述主体上的封装狭缝，所述封装狭缝包括沿第一方向延伸的第一狭缝组和沿第二方向延伸的第二狭缝组，所述第一狭缝组包括至少两条第一狭缝，所述第二狭缝组包括至少两条第二狭缝，所述第一狭缝在第二方向上的宽度大于所述第二狭缝组在第一方向上的宽度。
在其中一个实施例中，所述第一狭缝组和所述第二狭缝组相互连通。
在其中一个实施例中，所述第一狭缝组和所述第二封装狭缝组呈闭合的规则四边形。
在其中一个实施例中，所述第一狭缝在第二方向上的宽度与所述第二狭缝在第一方向上的宽度比为1.15:1-1.25:1。
在其中一个实施例中，所述第一狭缝在第二方向上的宽度为300μm～700μm，所述第二狭缝在第一方向上的宽度为240μm～609μm。
本申请还提供了一种封装方法，采用如上所述掩膜板制备得到封装区域。
在其中一个实施例中，采用的封装材料玻璃胶。
本申请还提供了一种显示面板，采用如上所述的封装方法制备得到。
在其中一个实施例中，所述第一封装胶线高度与所述第二封装胶线高度的均一性＜5％。
在其中一个实施例中，所述第一封装胶线的高度以及所述第二封装胶线的高度为5.2μm～5.7μm。
上述封装掩膜板，包括主体和贯穿形成在主体上的封装狭缝，封装狭缝包括沿第一方向延伸的第一狭缝组和沿第二方向延伸的第二狭缝组，第一狭缝组包括至少两条第一狭缝，第二狭缝组包括至少两条第二狭缝，通过使第一狭缝在第二方向上的宽度大于第二狭缝在第一方向上的宽度，在料刮沿第一方向将封装材料印刷到基板上时，能够使第二狭缝相对于第一狭缝具有较小的透墨量，较小的透墨量能够减小与料刮的接触面积，从而降低受到的料刮的压力，由此能够提高基于第二狭缝形成的第二封装胶线的高度与基于第一狭缝形成的第一封装胶线的高度均一性，使显示面板的两块基板封装后各处的间距相等，避免产生牛顿环，提高显示面板的品质。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请中记载的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
图1为本申请一个实施例的封装掩膜板以及料刮行进方向示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下通过实施例，并结合附图，对本申请的封装掩膜板、封装方法及显示面板进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
传统地，显示面板往往会产生牛顿环。例如，硬屏显示面板(In-plane switching panel，IPS panel)采用玻璃胶封装，将玻璃胶按设计宽度印刷在第一基板的四个边缘以形成封装胶线，其中设计宽度由掩膜板的狭缝宽度决定，从而在第一基板的四个边缘分别形成四条封装胶线，并利用四条玻璃胶线将第一基板与第二基板封装在一起，然而往往会在第一基板与第 二基板之间产生牛顿环现象，影响显示面板的封装效果。本申请的发明人研究发现，采用上述方案制备的显示面板，四条封装胶线的最终高度不一致导致第一基板与第二基板封装后间距在各处不等，从而产生牛顿环现象。
发明人还意外地发现，四条封装胶线的最终宽度与设计宽度之间存在偏差，且偏差的趋势不一致。即使四条封装胶线的设计宽度相同，但是在利用掩膜板印刷后，四条封装胶线的最终宽度的偏差趋势也不相同。发明人在此发现的基础上，通过进一步研究，提出了本申请。
请参阅图1所示，本申请提供了一种封装掩膜板，包括主体和形成在主体上的封装狭缝，封装狭缝包括沿第一方向延伸的第一狭缝组和沿第二方向延伸的第二狭缝组，第一狭缝组包括至少第一狭缝，第二狭缝组包括至少两条第二狭缝，第一狭缝在第二方向上的宽度大于第二狭缝在第一方向上的宽度。利用该封装掩膜板封装时，对应第一狭缝制得第一封装胶线，对应第二狭缝制得第二封装胶线。所述主体可以是板状。
通过使第一狭缝在第二方向上的宽度大于第二狭缝在第一方向上的宽度，在料刮沿第一方向将封装材料印刷到基板上时，能够使第二狭缝相对于第一狭缝具有较小的透墨量，较小的透墨量能够减小与料刮的接触面积，从而降低受到的料刮的压力，从而能够提高基于第二狭缝形成的第二封装胶线的高度与基于第一狭缝形成的第一封装胶线的高度均一性，使显示面板的两块基板封装后各处的间距相等，避免产生牛顿环，提高显示面板的品质。
作为一种可选实施方式，第一狭缝组和第二狭缝组相互连通。第一狭缝组包括的多条第一狭缝与第二狭缝组包括的多条第二狭缝相互交叉连通，在掩膜板上形成网状结构，网状结构的形状根据封装要求进行设置，以便利用该掩膜板形成网状连接的封装胶线。
可选地，第一狭缝组和第二封装狭缝组呈闭合的规则四边形，以便在基板上形成闭合的规则的四边形胶线。
请参阅图1所示，显示了一个印刷结构单元的具有呈闭合的规则四边形的掩膜板。其中箭头方向表示料刮3的印刷方向，印刷方向与第一方向相同。
在基板上印刷玻璃胶的过程是将掩膜板设置在基板上，将封装胶涂覆在第一狭缝组以及第二狭缝组中，随之料刮3在掩膜板上表面按照第一方向运行，将封装胶压入第一狭缝组的第一狭缝10中以及第二狭缝组的第二狭缝20中，同时将多余的封装胶刮除。从而在一个封装结构单元的掩膜板的第一狭缝组以及第二狭缝组中形成首尾相接的封装胶线。其中，基于第一狭缝10制得第一封装胶线，基于第二狭缝20制得第二封装胶线。
比较第一封装胶线、第二封装胶线的印制过程。在料刮3沿第一方向行进过程中，料刮3与第一狭缝10的接触面积比与第二狭缝20的接触面积小，第一狭缝10中封装胶受到料刮3的压力也相对较小，以致第一封装胶线的最终宽度偏离第一狭缝10在第二方向上的宽度的程度相对于第二封装胶线的最终宽度偏离第二狭缝20在第一方向上的宽度的程度低，而第一封装胶线的最终高度相对于第二封装胶线的最终高度高。在本申请中通过使第一狭缝组单位长度面积大于第二狭缝组的单位长度面积，能够增大第一狭缝10与料刮3的接触面积，用于补偿第一狭缝10沿第一方向延伸与刮料3的接触面积与与第二狭缝20沿第二方向延伸与料刮3的接触面积之间的差值，从而能够提高第一狭缝10中的透墨量，即增加了进入第一狭缝10中封装胶的量，从而增大进入第一狭缝10中封装胶的受到的料刮3的压力，以降低第一狭缝10中封装胶形成的第一封装胶线高度，最终使第一封装胶线的最终高度与第二封装胶线的最终高度的均一性好。
作为一种可选实施方式，第一狭缝10在第二方向上的宽度与第二狭缝20在第一方向上的宽度比为1.15:1～1.25:1。
本申请通过研究发现，在相同的狭缝宽度下，得到的最终宽度与最终高度具有一定的关系。封装胶线的最终宽度越大，最终高度就越低。相反，封装胶线的最终宽度越小，最终高度就越高。更进一步根据印刷方向(料刮3行进方向)对基于第一狭缝组以及基于第二狭缝组制备的封装胶线的不同影响，通过调节第一狭缝10在第二方向上的宽度与第二狭缝20在第一方向的宽度比为1.15:1～1.25:1，以最终抵消印刷方向对基于第一狭缝组以及基于第二狭缝组制备的封装胶线的不同影响，使制得的第一封装胶线的最终宽度与第二封装胶线的最终宽度、第一封装胶线的最终高度与第二封装胶线的最终高度均一，从而避免基于第一封装胶线和第二封装胶线封装后两基板之间的距离在各处不一致而出现牛顿环现象。
作为一种可选实施方式，进一步地，第一狭缝10在第二方向上的宽度为300μm～700μm，第二狭缝20在第一方向上的宽度为240μm～609μm。
通过进一步使第一狭缝10在第二方向上的宽度为300μm～700μm，第二狭缝20在第一方向上的宽度为240μm～609μm，在印刷后能够使第一封装胶线以及第二封装胶线的最终宽度在适宜的范围内，满足显示面板的封装要求，进一步提高封装效果。
需要说明的是，第一狭缝10在第二方向的宽度以及第二狭缝20在第一方向的宽度是根据产品尺寸以及产品边框大小不同而设计的，或根据封装效果需要设计的。一般地，狭缝宽 度越大，相应的密封胶线宽度越大，密封效果越好。
本申请的第二方面还提供了一种封装方法，采用上述掩膜板制备得到封装区域，对应于第一狭缝组形成第一封装胶线，对应于第二狭缝组形成第二封装胶线。由于上述掩膜板具有上述技术效果，采用上述掩膜板进行封装的封装方法也应具有同样的技术效果，在此不再详细介绍。
可选地，封装方法包括以下步骤：
提供第一基板；
在第一基板设置上述掩膜板；
将封装胶涂覆在掩膜板的第一狭缝组以及第二狭缝组中；
使料刮3在掩膜板上表面沿第一方向行进，将封装胶压入第一狭缝组以及第二狭缝组中，并将多余的封装胶刮除。
作为一种可选实施方式，采用的封装材料为玻璃胶。可选地，玻璃胶的粘度为40000cps～200000cps。通过控制玻璃胶的粘度，从而控制玻璃胶的流动性在一定范围内，以确保封装胶线的最终高度在需要范围内。
本申请的第三方向还提供了一种显示面板，采用上述封装方法制备得到。由于上述封装方法具有上述技术效果，采用上述封装方法制备的显示面板也应具有同样的技术效果，在此不再详细介绍。
作为一种可选实施方式，第一封装胶线高度与第二封装胶线高度的均一性＜5％。显示面板采用上述封装方法，能能够显著提高第一封装胶线与第二封装胶线的高度的均一性，使第一封装胶线以及第二封装胶线高度的均一性降低至5％，封装得到的显示面板的两基板的间距相等，能够避免由于间距不等产生牛顿环，提高了显示面板的品质。
作为一种可选实施方式，第一封装胶线的高度以及第二封装胶线的高度为5.2μm～5.7μm。能够满足显示面板的封装要求，进一步提高封装效果。
对比例1
以第一狭缝10在第二方向上的宽度为450μm、第二狭缝20在第一方向上的宽度为450μm的掩膜板进行批量封装生产，得到的统计数据如表1所示。
实施例2
以第一狭缝10在第二方向上的宽度为550μm、第二狭缝20在第一方向上的宽度为450 μm的掩膜板进行批量封装生产，得到的统计数据如表2所示。
表1对比例1批量产品的统计数据
Figure PCTCN2018089083-appb-000001
表2实施例1批量产品的统计数据
Figure PCTCN2018089083-appb-000002
需要说明的是，在表1、表2中，狭缝分别为与第一封装胶线以及第二封装胶线对应的第一狭缝10以及第二狭缝20。最终值为该批量产品的最终宽度/高度的平均值。偏差值为最终值减去预设值的差值。
在本申请中，均一性＝(最大值-最小值)/(最大值+最小值)，最大值是批量产品中最终宽度/高度的最大值，最小值是批量产品中最终宽度/高度的最小值，通过计算均一性能够获知封装胶线最终宽度/高度的偏离预设宽度/高度。其中，预设宽度为对应的狭缝宽度，预设高度为对应的狭缝深度。
从表1、表2测得的数据分析可知，在掩膜板的第一狭缝10在第二方向的宽度与第二狭缝20在第一方向的宽度相同的情况下，制备的第一封装胶线、第二封装胶线最终宽度不同，最终宽度的偏差趋势也不相同。进一步地，第一封装胶线、第二封装胶线的最终高度不同，最终高度的偏差趋势也不相同。进一步地，第一封装胶线与第二封装胶线的最终宽度与最终 高度具有一定的关系，封装胶线的最终宽度越大，最终高度就越低。相反，封装胶线的最终宽度越小，最终高度就越高。
进一步地，本申请基于第一封装胶线、第二封装胶线的最终宽度以及最终高度分析，对第一狭缝10在第二方向的宽度以及第二狭缝20在第一方向的宽度进行推导。
表3批量产品的封装胶线的截面积的计算数据
Figure PCTCN2018089083-appb-000003
需要说明的是，在表3中，狭缝宽度分别为第一封装胶线以及第二封装胶线对应的第一狭缝10在第二方向的宽度以及第二狭缝20在第一方向的宽度。胶线截面积为第一封装胶线在第二方向的纵截面面积或第二封装胶线在第一方向的纵截面面积。
请参阅表3所示，批量产品的封装胶线的纵截面面积的计算数据，设对比例1的第一封装胶线、对比例1的第二封装胶线、实施例1的第一封装胶线、实施例1的第二封装胶线的实际纵截面面积分别为V 1、V 2、V 3、V 4，最终宽度分别为L 1、L 2、L 3、L 4，最终高度分别为H 1、H 2、H 3、H 4，其中，V 1＝L 1*H 1，V 2＝L 2*H 2，V 3＝L 3*H 3，V 4＝L 4*H 4。
其中，V 2＝V 4，L 2＝L 4，H 2＝H 4。
对比例1的第二封装胶线与实施例1的第二封装胶线均为与印刷方向垂直的沿第二方向延伸的封装胶线，其最终宽度相对于第二狭缝20在第一方向的宽度的偏差程度一致，得到的最终宽度也接近。
假设V 1＝V 3，L 1＝L 3时，则H 1＝H 3。
对比例1的第一封装胶线与实施例1的第一封装胶线均为与印刷方向平行的沿第一方向延伸的封装胶线，其最终宽度相对于狭缝宽度的偏差程度也应一致，得到的最终宽度也接近。
因此，可使互相平行的封装胶线对应的狭缝宽度相同，以期两条互相平行的封装胶线的 最终宽度、最终高度相同。
其中，当V 2＝V 1，L 1/L 2＝H 2/H 1＝0.917，即L 1≠L 2，且H 2≠H 1。
对比例1的第一封装胶线为与印刷方向平行的沿第一方向延伸的封装胶线，第二封装胶线为与印刷方向垂直的沿第二方向延伸的封装胶线，二者分别对应的第一狭缝10在第二方向的宽度与第二狭缝20在第一方向的宽度相同，但得到的第一封装胶线与第二封装胶线的最终宽度及最终高度均不同，第一封装胶线的最终宽度比第二封装胶线的最终宽度窄，第一封装胶线的最终高度比第二封装胶线的最终高度高。
因此，若欲使第一封装胶线与第二封装胶线的最终高度相同，则根据本申请构思需要增大第一封装胶线的最终宽度，即需要相对地增大第一封装胶线对应的第一狭缝10在第二方向的宽度。
其中，当H 4＝H 3时，V 3V 4＝(H 3*L 3)/(H 4*L 44)＝V 3/V 4＝L 3/L 4＝564.0/504.3＝1.19。
实施例1的第一封装胶线为与印刷方向平行的沿第一方向延伸的封装胶线，实施例1的第二封装胶线为与印刷方向垂直的沿第二方向延伸的封装胶线，二者分别对应的第一狭缝10在第二方向的宽度与第二狭缝20在第一方向的宽度不同，但得到的第一封装胶线与第二封装胶线的最终高度更接近。因此，证明若欲使第一封装胶线与第二封装胶线的最终高度相同，则需要相应调整对应的第一狭缝10在第二方向的宽度与第二狭缝20在第一方向的宽度。
进一步地，本申请通过大量的数据统计，发现将第一狭缝10在第二方向的宽度与第二狭缝20宽度在第一方向的比设置为1.15:1～1.25:1，能够抵消第一狭缝10中封装材料与第二狭缝20中封装材料受到的料刮3不同程度的压力作用，使制得的第一封装胶线与第二封装胶线的最终高度均一性高，防止产生牛顿环，同时，第一封装胶线与第二封装胶线的最终高度一致，也有助于提高封装效果，提高密封效果，提高阻水、氧性。并且通过使第一狭缝10在第二方向的宽度与第二狭缝20在第一方向的宽度比为1.15:1～1.25:1，能够使第一封装胶线以及第二封装胶线的最终高度为5.2μm～5.7μm，满足密封需求。
更进一步地，使第一狭缝10在第二方向的宽度与第二狭缝20宽度在第一方向的比设置为1.2:1，能够更进一步提高第一封装胶线与第二封装胶线最终高度的均一性，使第一封装胶线以及第二封装胶线的最终高度控制在5.3μm～5.6μm。
以下，以实施例2进一步验证本申请的掩膜板制得的第一封装胶线与第二封装胶线的实际高度均一性更好的技术效果。
实施例2
以第一狭缝组和第二狭缝组呈闭合的规则四边形，第一狭缝10在第二方向的宽度为550μm、第二狭缝20在第一方向的宽度为450μm的掩膜板进行批量封装生产，得到的统计数据如表4所示。
表4本申请实施例2批量产品的统计数据
Figure PCTCN2018089083-appb-000004
需要说明的是，在表4中，狭缝分别为与第一封装胶线以及第二封装胶线对应的第一狭缝10以及第二狭缝20。最终值为该批量产品的最终宽度/高度的平均值。偏差值为最终值减去预设值的差值。
表4的统计结果进一步验证了，采用本申请掩膜板制备的封装胶线的最终高度的均一性提高，能够使显示面板的两基板封装后的间距相等，避免产生牛顿环，提高显示面板的品质。
在本申请描述中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本申请可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本申请可实施的范畴。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种封装掩膜板，其特征在于，包括主体和形成在所述主体上的封装狭缝，所述封装狭缝包括沿第一方向延伸的第一狭缝组和沿第二方向延伸的第二狭缝组，所述第一狭缝组包括至少两条第一狭缝，所述第二狭缝组包括至少两条第二狭缝，所述第一狭缝在第二方向上的宽度大于所述第二狭缝在第一方向上的宽度。
  2. 根据权利要求1所述的封装掩膜板，其中，所述第一狭缝组和所述第二狭缝组相互连通。
  3. 根据权利要求2所述的封装掩膜板，其中，所述第一狭缝组和所述第二封装狭缝组呈闭合的规则四边形。
  4. 根据权利要求3所述的封装掩膜板，其中，所述第一狭缝在第二方向上的宽度与所述第二狭缝在第一方向上的宽度比为1.15:1～1.25:1。
  5. 根据权利要求4所述的封装掩膜板其中，所述第一狭缝在第二方向上的宽度为300μm～700μm，所述第二狭缝在第一方向上的宽度为240μm～609μm。
  6. 一种封装方法，其特征在于，采用如权利要求1至5任一项所述封装掩膜板制备得到封装区域，对应于所述第一狭缝组形成第一封装胶线，对应于所述第二狭缝组形成第二封装胶线。
  7. 根据权利要求6所述的封装方法，其特征在于，采用的封装材料为玻璃胶。
  8. 一种显示面板，其特征在于，采用如权利要求6或7所述的封装方法制备得到。
  9. 根据权利要求8所述的显示面板，其中，所述第一封装胶线高度与所述第二封装胶线高度的均一性＜5％。
  10. 根据权利要求8所述的显示面板，其中，所述第一封装胶线的高度以及所述第二封装胶线的高度为5.2μm～5.7μm。
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