WO2017049822A1 - 印刷网版及封框胶的印刷方法 - Google Patents

印刷网版及封框胶的印刷方法 Download PDF

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Publication number
WO2017049822A1
WO2017049822A1 PCT/CN2016/072011 CN2016072011W WO2017049822A1 WO 2017049822 A1 WO2017049822 A1 WO 2017049822A1 CN 2016072011 W CN2016072011 W CN 2016072011W WO 2017049822 A1 WO2017049822 A1 WO 2017049822A1
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WO
WIPO (PCT)
Prior art keywords
cross
section
width
printing screen
sealant
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/072011
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English (en)
French (fr)
Inventor
王选生
靳福江
崔富毅
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.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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Publication date
Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US15/517,053 priority Critical patent/US10052863B2/en
Publication of WO2017049822A1 publication Critical patent/WO2017049822A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/24—Stencils; Stencil materials; Carriers therefor
    • B41N1/248—Mechanical details, e.g. fixation holes, reinforcement or guiding means; Perforation lines; Ink holding means; Visually or otherwise detectable marking means; Stencil units
    • 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

Definitions

  • Embodiments of the present disclosure relate to a printing method for a printing screen and a sealant.
  • Existing displays generally include an upper substrate and a lower substrate, the upper substrate and the lower substrate being bonded by an encapsulant in the package area.
  • the encapsulant is generally formed on the upper substrate or the lower substrate by printing screen printing, and the upper substrate and the lower substrate are correspondingly bonded to be bonded together.
  • Embodiments of the present disclosure provide a printing method for printing a screen and a sealant, and printing with the screen can improve the height uniformity of the printed pattern.
  • Embodiments of the present disclosure provide a printing screen comprising: a mesh frame, a wire mesh fixed on the wire frame, a film formed on the wire mesh, the wire mesh is not formed by a portion covered by the film a rectangular annular feed opening; the rectangular ring includes two opposite first sides and two opposite second sides;
  • the width of the upper opening of the first side cross section is less than or equal to the width of the upper opening of the second side cross section, and at the first height, the area of the cross section of the first side is larger than the second The area of the cross section of the side, wherein the first height is less than the thickness of the film.
  • the first side has a right trapezoidal cross section and the second side has an inverted trapezoidal cross section.
  • the width of the upper opening of the cross section of the first side is equal to the width of the lower opening of the cross section of the second side
  • the width of the lower opening of the cross section of the first side is equal to the first The width of the upper opening of the cross section of the two sides.
  • the cross section of the first side is a regular trapezoid, and the cross section of the second side is a rectangle;
  • the first side has a rectangular cross section
  • the second side has an inverted trapezoidal cross section.
  • the trapezoid is an isosceles trapezoid.
  • the cross section of the first side is a positive trapezoid
  • the cross section of the second side In the case of a rectangle, the angle formed by the waist of the positive trapezoid and the lower base of the positive trapezoid ranges from 2 degrees to 19 degrees.
  • At least one side of the cross section of the first side is stepped; and/or,
  • At least one side of the cross section of the second side is stepped.
  • the two sides of the cross section of the first side are symmetrical stepped; and/or,
  • the two sides of the cross section of the second side are symmetrical stepped shapes.
  • Embodiments of the present disclosure also provide a method for printing a sealant, comprising:
  • the feeding opening of the above printing screen provided by the embodiment of the present disclosure corresponds to the packaging area on the substrate to be printed;
  • the printing screen is separated from the substrate to be printed.
  • Figure 1 is a schematic exploded view of a printing screen
  • Figure 2 is a schematic view showing the use of a printing screen printing frame sealant
  • FIG. 3 is a schematic view showing a sealant formed by printing on a substrate using a printing screen
  • Figure 4 is a schematic cross-sectional view of the sealant of Figure 3;
  • FIG. 5 is a schematic diagram of a printing screen provided by an embodiment of the present disclosure.
  • FIG. 6 is a cross-sectional view showing another first side and a second side of a printing screen according to an embodiment of the present disclosure
  • FIG. 7 is a cross-sectional view showing another first side and a second side of a printing screen according to an embodiment of the present disclosure
  • FIG. 8 is a schematic cross-sectional view showing another first side and a second side of a printing screen according to an embodiment of the present disclosure
  • FIG. 9 is a cross-sectional view showing the first side and the second side of another printing screen according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic cross-sectional view showing another first side and a second side of a printing screen according to an embodiment of the present disclosure
  • Figure 11 is a schematic view of the sealant at a unit length formed by using the printing screen shown in Figure 6;
  • FIG. 12 is a schematic cross-sectional view showing another first side and a second side of a printing screen according to an embodiment of the present disclosure.
  • a printing screen 10 is produced as shown in Fig. 1.
  • a screen 12 is stretched over the frame 11, as shown in Fig. 1(a); after that, a film 13 is formed on the screen.
  • the film 13 is generally partially removed after exposure, and the printed screen of the sealant is as shown in FIG. 1(b), and the portion of the film not covering the screen forms a "rectangular ring" pattern, and the cross-sectional shape of the rectangular ring The same, generally rectangular.
  • Printing the sealant on the substrate precisely aligns the printed screen with the substrate, so that the uncovered area of the printed screen (ie, the rectangular ring) corresponds to the position of the package area of the substrate, and the frame is placed on the printed screen.
  • the glue as shown in FIG. 2, is pressed and scraped on the printing screen by the doctor blade 20.
  • the sealant 31 is transferred to the package area of the substrate 30 by the screen, as shown in FIG. Shown.
  • the inventors have noticed that when the doctor blade 20 is once from one side of the printing screen to the other side in the direction shown by the arrow in FIG. 2, the second frame sealant 312 perpendicular to the direction of movement of the blade 20 is subjected to the pressure of the blade. As shown in FIG. 4, the formed second sealant 311 is lower; the first sealant 311 parallel to the direction of movement of the scraper 20 is less stressed by the scraper, and the second sealant 311 is formed. High, that is, h1>h2, therefore, the height uniformity of the sealant is poor, which reduces the packaging effect of the substrate.
  • the embodiment of the present disclosure provides a printing screen 10, as shown in FIG. 5, comprising: a frame 11, a screen 12 fixed on the frame 11, a film 13 formed on the screen 12, and a screen 12 not
  • the portion covered by the film 13 forms a rectangular annular feed opening.
  • the rectangular ring includes two opposing first sides 101 and two opposing second sides 102.
  • the width of the upper opening of the cross section of the first side 101 is less than or equal to the width of the upper opening of the cross section of the second side 102, and at the first height, the area of the cross section of the first side 101 is larger than the cross section of the second side 102.
  • the area in which the first height is less than the thickness of the film.
  • the symmetrical centers coincide, and the portion defined between the two rectangles whose four sides are respectively parallel is called a “rectangular ring”.
  • the screen is laminated with a plurality of net wires, and the illustration of the screen 12 as a flat plate in the drawing will be described as an example.
  • the width of the upper opening of the cross section (A-A') of the first side 101 shown in Fig. 7 is smaller than the width of the upper opening of the cross section (B-B') of the second side 102, that is, d1 ⁇ d2.
  • the upper base, h3 is the height of the shadow trapezoid.
  • orientation terms such as “upper” and “lower” are defined relative to the orientation of the printed screen in the drawing, and it should be understood that these directional terms are relative concepts. For relative description and clarification, which may vary accordingly depending on the orientation in which the printing screen is placed.
  • a printing screen provided by an embodiment of the present disclosure on the one hand, in the case where the width of the upper opening of the cross section of the first side is smaller than the width of the upper opening of the cross section of the second side, the lower opening of the first side is smaller than The second side of the feed opening is beneficial to reduce the amount of material discharged on the first side.
  • the area of the cross section of the first side is larger than the area of the cross section of the second side, that is, if the area of the cross section is equal, the height of the first side is smaller than the height of the second side .
  • the printing screen in combination with the printing screen printing sealant, the printing screen provided by the embodiment of the present disclosure is used to improve the uniformity of the sealant.
  • Embodiments of the present disclosure provide a method for printing a sealant, comprising:
  • the feeding opening of the printing screen corresponds to the packaging area on the substrate to be printed; the sealing frame glue is placed on the feeding opening of the printing screen; the scraper is parallel to the second side, and sequentially passes through two The two sides are scraped with a sealant; the printing screen is separated from the substrate to be printed.
  • the scraper is parallel to the second side, and sequentially passes through the two second sides to scrape the sealant, and the sealant on the second side is subjected to the pressure of the scraper greater than the sealant on the first side. The pressure of the scraper.
  • the width of the upper opening of the first side cross section is equal to the width of the upper opening of the second side cross section, since the area of the cross section of the first side is larger than the area of the cross section of the second side at the first height
  • the height of the cross section of the first side is smaller than the height of the cross section of the second side;
  • the sealant on the first side is subjected to the pressure of the scraper larger than the second side. The sealant is subjected to the pressure of the scraper, and the two factors are combined.
  • the height of the sealant on the second side can be lowered, so that the height of the sealant formed on the first side and the second side can be Close to the same.
  • the width of the upper opening of the cross section of the first side is smaller than the width of the upper opening of the cross section of the second side, on the other hand, the amount of blanking of the sealant on the first side is reduced, In terms of factors, the height of the sealant on the second side can be lowered relative to the prior art, so that the height of the sealant formed on the first side and the second side can be nearly uniform.
  • the printed screen can achieve the above beneficial effects, and there are many different ways. The following examples are described in detail.
  • the cross section (A-A') of the first side is a positive trapezoid
  • the cross section (B-B') of the second side is an inverted trapezoid.
  • the cross section is a positive trapezoid, that is, the width of the upper opening of the cross section is smaller than the width of the lower opening of the cross section, that is, d1 ⁇ d3
  • the cross section is an inverted trapezoid, that is, the width of the upper opening of the cross section is larger than the width of the lower opening of the cross section. , that is, d4 ⁇ d2.
  • the area S1 of the cross section (AA') of the first side that is, the area of the positive trapezoid in Fig.
  • the width of the lower opening of the cross section is greater than the width of the lower opening of the cross section of the second side, ie d3 > d4.
  • the area S1 of the cross section (AA') of the first side that is, the area of the positive trapezoid in Fig.
  • the cross section (AA') of the side is a positive trapezoid, and the cross section (BB') of the second side is a rectangle.
  • the first side (AA') The cross section of the cross section is rectangular
  • the cross section of the second side (BB') is an inverted trapezoid.
  • the first height h3 is smaller than the thickness H of the film.
  • At least one side of the cross section of the first side is stepped; and/or at least one side of the cross section of the second side is stepped.
  • the two sides of the cross section of the first side are symmetrical stepped; and/or the two sides of the cross section of the second side are symmetrical stepped.
  • the two sides of the cross section (A-A') of the first side are symmetrical stepped, and the two sides of the cross section (B-B') of the second side are symmetrical stepped.
  • the cross section of the first side (AA') is an isosceles trapezoid
  • the cross section of the second side is rectangular.
  • the angle between the waist of the isosceles trapezoid and the lower base of the isosceles trapezoid is 2 °-19°.
  • the first side has a trapezoidal cross section, and the formed sealant is trapezoidal, and the first side includes N square-length flats of unit length, as shown in FIG. 11 . a) shown.
  • the second side has a rectangular cross section, and the second side includes M rectangular parallelepipeds, as shown in Fig. 11(b).
  • the unit length can be determined according to actual needs.
  • the volume of the sealant formed on the first side at the unit length is more than the sealant formed on the second side, and the volume is assumed to be existing.
  • the first sealant is a ⁇ m higher than the second sealant, then:
  • the value of a ranges from 1.0 to 2.0 ⁇ m.
  • the range of values of ⁇ can be obtained by calculation.
  • the height h ranges from 2 to 8 ⁇ m
  • the value of w ranges from 50 ⁇ m.
  • the value of ⁇ ranges from 2° to 19°.
  • the upper opening width and the lower opening width of the first side cross section, The upper opening width, the lower opening width, and the frame seal rubber height of the two-side cross-section, combined with the height difference between the first frame sealant and the second frame sealant in the prior art, can also find the first side and the second side in The relative angular relationship of the different cross-sectional shapes, the embodiment of the present disclosure is described by way of example only, but the invention is not limited thereto.
  • Embodiments of the present disclosure provide a printing method for a printing screen and a sealant.
  • the scraper is parallel to the second side, and sequentially passes through the two second sides to scrape the sealant, and the sealant on the second side is received.
  • the pressure of the scraper is greater than the pressure of the scraper received by the sealant on the first side.
  • the width of the upper opening of the first side cross section of the upper side of the first side is equal to the width of the upper opening of the cross section of the second side
  • the area of the cross section of the first side is larger than the second at the first height
  • the height of the cross section of the first side is smaller than the height of the cross section of the second side; on the other hand, the sealant on the first side is subjected to the scraper
  • the pressure of the sealant on the second side is greater than the pressure of the scraper, so that the two factors can be combined, and the height of the sealant on the second side can be lowered relative to the prior art, so that the first side and the second side are formed.
  • the height of the sealant can be nearly uniform.
  • the width of the upper opening of the cross section of the first side is smaller than the width of the upper opening of the cross section of the second side, on the other hand, the amount of blanking of the sealant on the first side is reduced, In terms of factors, the height of the sealant on the second side can be lowered relative to the prior art, so that the height of the sealant formed on the first side and the second side can be nearly uniform.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Screen Printers (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

一种印刷网版及封框胶的印刷方法，该印刷网版(10)包括：网框(11)、固定在所述网框(11)上的丝网(12)、形成在所述丝网(12)上的薄膜(13)，所述丝网(12)未被所述薄膜(13)覆盖的部分形成矩形环状的下料口；矩形环包括相对的两个第一边(101)和相对的两个第二边(102)；所述第一边(101)的横截面的上开口的宽度小于或等于所述第二边(102)的横截面的上开口的宽度，且在第一高度下，所述第一边(101)的横截面的面积大于所述第二边(102)的横截面的面积，所述第一高度小于所述薄膜的厚度。印刷网版及封框胶的印刷方法解决了封框胶高度均一性差的问题。

Description

印刷网版及封框胶的印刷方法 技术领域
本公开的实施例涉及一种印刷网版及封框胶的印刷方法。
背景技术
现有的显示器一般包括上基板和下基板，上基板和下基板在封装区通过封装胶粘合。封装胶一般通过印刷网版印刷形成在上基板或下基板上，再将上基板与下基板对应贴合以粘合在一起。
发明内容
本公开的实施例提供一种印刷网版及封框胶的印刷方法，采用该印刷网版进行印刷能够提高印刷图案的高度均一性。
本公开的实施例采用如下技术方案：
本公开实施例提供了一种印刷网版，包括：网框、固定在所述网框上的丝网、形成在所述丝网上的薄膜，所述丝网未被所述薄膜覆盖的部分形成矩形环状的下料口；矩形环包括相对的两个第一边和相对的两个第二边；
所述第一边横截面的上开口的宽度小于或等于所述第二边横截面的上开口的宽度，且在第一高度下，所述第一边的横截面的面积大于所述第二边的横截面的面积，其中，所述第一高度小于所述薄膜的厚度。
在一示例中，所述第一边的横截面为正梯形，所述第二边的横截面为倒梯形。
在一示例中，所述第一边的横截面的上开口的宽度等于所述第二边的横截面的下开口的宽度，所述第一边的横截面的下开口的宽度等于所述第二边的横截面的上开口的宽度。
在一示例中，在所述第一边横截面的上开口的宽度等于所述第二边横截面的上开口的宽度的情况下；
所述第一边的横截面为正梯形，所述第二边的横截面为矩形；或者，
所述第一边的横截面为矩形，所述第二边的横截面为倒梯形。
在一示例中，所述梯形为等腰梯形。
在一示例中，在所述第一边的横截面为正梯形，所述第二边的横截面 为矩形的情况下，所述正梯形的腰与所述正梯形的下底形成的夹角的取值范围为2度-19度。
在一示例中，所述第一边的横截面的至少一个侧边为阶梯形；和/或，
所述第二边的横截面的至少一个侧边为阶梯形。
在一示例中，所述第一边的横截面的两个侧边为对称的阶梯形；和/或，
所述第二边的横截面的两个侧边为对称的阶梯形。
本公开的实施例还提供了一种封框胶的印刷方法，包括：
将本公开实施例提供的上述印刷网版的下料口与待印刷的基板上的封装区域对应；
在印刷网版的下料口放置封框胶；
利用刮刀沿与所述第二边平行的方向一次刮涂所述封框胶；以及
将所述印刷网版与所述待印刷的基板分离。
附图说明
以下将结合附图对本公开的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本公开的实施例，其中：
图1为一印刷网版制作分解示意图；
图2为采用一印刷网版印刷封框胶的示意图；
图3为采用一印刷网版在基板上印刷形成的封框胶示意图；
图4为图3所示封框胶的截面示意图；
图5为本公开实施例提供的一种印刷网版示意图；
图6为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图；
图7为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图；
图8为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图；
图9为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图；
图10为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图；
图11为采用图6所示的印刷网版形成的单位长度下的封框胶示意图；
图12为本公开实施例提供的另一种印刷网版第一边和第二边的横截面示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在无需做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，本文使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其它元件或者物件。“上”、“下”、等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
一种印刷网版10的制作如图1所示，首先在网框11上绷上丝网12，如图1(a)所示；之后，再在丝网上形成薄膜13。薄膜13一般经曝光之后部分被去除，封框胶的印刷网版如图1(b)所示，薄膜未覆盖丝网的部分形成“矩形环”状的图案，且该矩形环的横截面形状相同，一般为矩形。在基板上印刷封框胶，是将印刷网版与基板精准对位，使得印刷网版上薄膜未覆盖的区域(即矩形环)与基板的封装区域位置对应，在印刷网版上放置封框胶，如图2所示，利用刮刀20在印刷网版上施压刮动，在印刷网版未覆盖薄膜的部分，封框胶31通过丝网转印在基板30的封装区域，如图3所示。
发明人注意到，当刮刀20沿如图2箭头所示的方向一次从印刷网版的一侧至另一侧，则与刮刀20的运动方向垂直的第二封框胶312受到刮刀的压力较大，如图4所示，形成的第二封框胶311较低；与刮刀20的运动方向平行的第一封框胶311受到刮刀的压力较小，形成的第二封框胶311较 高，即h1＞h2，因此，封框胶的高度均一性差，降低了基板的封装效果。
本公开实施例提供了一种印刷网版10，如图5所示，包括：网框11、固定在网框11上的丝网12、形成在丝网12上的薄膜13，丝网12未被薄膜13覆盖的部分形成矩形环状的下料口。矩形环包括相对的两个第一边101和相对的两个第二边102。第一边101横截面的上开口的宽度小于或等于第二边102横截面的上开口的宽度，且在第一高度下，第一边101的横截面的面积大于第二边102的横截面的面积，其中，第一高度小于薄膜的厚度。
需要说明的是，本公开实施例中，对称中心重合，四边分别平行的两个矩形之间限定的部分叫做“矩形环”。丝网为多根网线压叠在一起，附图中以丝网12为平板状为示例进行说明。
图6所示的第一边101横截面(A-A′)的上开口的宽度等于第二边102横截面(B-B′)的上开口的宽度，即d1＝d2。在第一高度h3下，第一边的横截面(A-A′)的面积S1，即图6中的阴影梯形的面积，S1＝(d3+f1)×h3÷2，其中，d3为阴影梯形的下底，f1为阴影梯形的上底，h3为阴影梯形的高。在第一高度h3下，第二边的横截面(B-B′)的面积S2，即图6中的阴影矩形的面积，S2＝d4×h3，其中，d4为阴影矩形的长，h3为阴影矩形的高。由于d1＝d2，d2＝d4，f1＞d1，则d3＞d4，f1＞d4，(d3+f1)÷2＞d4，即S1＞S2，其中，第一高度h3小于薄膜的厚度H。
图7所示的第一边101横截面(A-A′)的上开口的宽度小于第二边102横截面(B-B′)的上开口的宽度，即d1＜d2。第一边的横截面(A-A′)的面积S1，即图7中的阴影梯形的面积，S1＝(d3+f1)×h3÷2，其中，d3为阴影梯形的下底，f1为阴影梯形的上底，h3为阴影梯形的高。在第一高度h3下，第二边的横截面(B-B′)的面积S2，即图7中的阴影矩形的面积，S2＝d4×h3，其中，d4为阴影矩形的长，h3为阴影矩形的高。为了使得S1＞S2，则(d3+f1)÷2＞d4。
在第一边和第二边的横截面不局限于图6、图7所示的方式，以上仅为示例说明，本领域普通技术人员还可以想到其他的方式。
此外，本公开实施例中，“上”和“下”等方位术语是相对于附图中的印刷网版示意置放的方位来定义的，应当理解，这些方向性术语是相对的概念，它们用于相对的描述和澄清，其可以根据印刷网版所放置的方位的变化而相应地发生变化。
本公开实施例提供的一种印刷网版，一方面，在第一边横截面的上开口的宽度小于第二边横截面的上开口的宽度的情况下，则第一边的下料口小于第二边的下料口，有利于减少第一边的下料量。另一方面，在第一高度下，第一边的横截面的面积大于第二边的横截面的面积，即在横截面的面积相等的情况下，第一边的高度小于第二边的高度。
下面，结合利用该印刷网版印刷封框胶，详细说明本公开实施例提供的印刷网版如何提高封框胶的均一性。
本公开实施例提供了一种封框胶的印刷方法，包括：
将本公开实施例提供的印刷网版的下料口与待印刷的基板上的封装区域对应；在印刷网版的下料口放置封框胶；刮刀与第二边平行，依次经过两个第二边以刮涂封框胶；将印刷网版与待印刷的基板分离。
需要说明的是，刮刀与第二边平行，依次经过两个第二边以刮涂封框胶，则第二边上的封框胶受到刮刀的压力大于第一边上的封框胶受到的刮刀的压力。在第一边横截面的上开口的宽度等于第二边横截面的上开口的宽度的情况下，由于在第一高度下，第一边的横截面的面积大于第二边的横截面的面积，一方面，相同面积的情况下，第一边的横截面的高度要小于第二边的横截面的高度；另一方面，第一边上的封框胶受到刮刀的压力大于第二边上的封框胶受到刮刀的压力，则综合两方面因素，相对于现有技术能够降低第二边上的封框胶的高度，从而第一边和第二边上形成的封框胶的高度能够接近一致。或者，在第一边横截面的上开口的宽度小于第二边横截面的上开口的宽度的情况下，再一方面，减小了第一边上的封框胶的下料量，综合三方面因素，相对于现有技术能够降低第二边上的封框胶的高度，从而使得第一边和第二边上形成的封框胶的高度能够接近一致。
印刷网版可以实现以上有益效果，可以有多种不同方式，以下示例几种进行详细说明。
例如，如图8、图9所示，第一边的横截面(A-A′)为正梯形，第二边的横截面(B-B′)为倒梯形。横截面为正梯形，即横截面的上开口的宽度小于横截面的下开口的宽度，即d1＜d3；横截面为倒梯形，即横截面的上开口的宽度大于横截面的下开口的宽度，即d4＜d2。
例如，图8所示，第一边的横截面(A-A′)的上开口的宽度等于第二边的横截面(B-B′)的下开口的宽度，即d1＝d4；且大于第一边的横截面 的下开口宽度，即d1＜d3；第一边的横截面的下开口的宽度等于第二边的横截面的上开口的宽度，即d3＝d2。在第一高度h3下，第一边的横截面(A-A′)的面积S1，即图8中的正梯形的面积，S1＝(d3+f1)×h3÷2，其中，d3为正梯形的下底，f1为正梯形的上底，h3为正梯形的高。在第一高度h3下，第二边的横截面(B-B′)的面积S2，即图8中的倒梯形的面积，S2＝(d4+f2)×h3÷2，其中，d4为倒梯形的下底，f2为倒梯形的上底，h3为阴影矩形的高。由于d3＝d2，d3＞f1＞d1，d1＝d4，f2＞d4，则d3＞f2，f1＞d4，(d3+f1)＞(d4+f2)，即S1＞S2，其中，第一高度h3小于薄膜的厚度H。
或者，如图9所示，第一边的横截面(A-A′)的上开口的宽度等于第二边的横截面(B-B′)的上开口的宽度，即d1＝d2；且第一边的横截面的下开口的宽度大于第二边的横截面的下开口的宽度，即d3＞d4。在第一高度h3下，第一边的横截面(A-A′)的面积S1，即图8中的正梯形的面积，S1＝(d3+f1)×h3÷2，其中，d3为正梯形的下底，f1为正梯形的上底，h3为正梯形的高。在第一高度h3下，第二边的横截面(B-B′)的面积S2，即图8中的倒梯形的面积，S2＝(d4+f2)×h3÷2，其中，d4为倒梯形的下底，f2为倒梯形的上底，h3为倒梯形的高。由于d1＝d2，d3＞f1＞d1，d2＞f2＞d4，则f1＞d4，d3＞f2，即S1＞S2，其中，第一高度h3小于薄膜的厚度H。
例如，如图6所示，在第一边横截面(A-A′)的上开口的宽度等于第二边横截面(B-B′)的上开口的宽度(即d1＝d2)的情况下；第一边的横截面(A-A′)为正梯形，第二边的横截面(B-B′)为矩形。
或者，如图10所示，在第一边(A-A′)横截面的上开口的宽度等于第二边横截面的上开口的宽度(即d1＝d2)的情况下，第一边(A-A′)的横截面为矩形，第二边(B-B′)的横截面为倒梯形。在第一高度h3下，第一边的横截面(A-A′)的面积S1，即图10中的矩形的面积，S1＝d3×h3，其中，d3为矩形的长，h3为矩形的高。在第一高度h3下，第二边的横截面(B-B′)的面积S2，即图10中的倒梯形的面积，S2＝(d4+f2)×h3÷2，其中，d4为倒梯形的下底，f2为倒梯形的上底，h3为倒梯形的高。由于d1＝d2＝d3，d2＞f2＞d4，则d3＞f2，d3＞d4，即S1＞S2。其中第一高度h3小于薄膜的厚度H。
可选的，第一边的横截面的至少一个侧边为阶梯形；和/或，第二边的横截面的至少一个侧边为阶梯形。或者，进一步的，第一边的横截面的两个侧边为对称的阶梯形；和/或，第二边的横截面的两个侧边为对称的阶梯形。
如图11所示，第一边的横截面(A-A′)的两个侧边为对称的阶梯形，第二边的横截面(B-B′)的两个侧边为对称的阶梯形。
且进一步，例如，如图6所示，在第一边(A-A′)横截面的上开口的宽度等于第二边(B-B′)横截面的上开口的宽度(即d1＝d2)的情况下；第一边(A-A′)的横截面为正等腰梯形，第二边的横截面为矩形的情况下，正等腰梯形的腰与正等腰梯形的下底形成的夹角范围为2°-19°。
结合图11，详细说明正等腰梯形的腰与正等腰梯形的下底形成的夹角与下料量的关系。
在参照图1-图4的技术中，第一边和第二边的横截面均为矩形的情况下，发明人发现，第一封框胶311比第二封框胶312高大概1.0-2.0μm，即h1-h2＝a＝(1.0-2.0)μm。
本公开实施例中，以图6所示的为例，第一边的横截面为梯形，形成的封框胶为梯形，则第一边包括N个单位长度的四棱台，如图11(a)所示。第二边的横截面为矩形，第二边包括M个单位长度的长方体，如图11(b)所示。单位长度可以根据实际需要确定。
假设d1＝d4＝d2＝w，则在单位长度为w的情况下，在单位长度下第一边形成的封框胶比第二边形成的封框胶多出来的体积为V，假设现有的第一封框胶比第二封框胶高aμm，则：
Figure PCTCN2016072011-appb-000001
由以上公式得到：
Figure PCTCN2016072011-appb-000002
其中，a的取值范围为1.0-2.0μm，在w和高度h一定的情况下，通过计算可以得到θ的取值范围。本公开实施例中，示例的，高度h的取值范围为2-8μm，w的取值范围为50μm，则根据以上公式可以得到θ的取值范围为2°-19°。
当然，根据以上原理，第一边横截面的上开口宽度、下开口宽度，第 二边横截面的上开口宽度、下开口宽度，封框胶高度，结合现有技术中第一封框胶和第二封框胶的高度差，还可以求得第一边和第二边在不同截面形状时其相对的角度关系，本公开实施例仅以上述为例进行说明，但是，本发明并不限于此。
本公开的实施例提供一种印刷网版及封框胶的印刷方法，刮刀与第二边平行，依次经过两个第二边以刮涂封框胶，则第二边上的封框胶受到刮刀的压力大于第一边上的封框胶受到的刮刀的压力。在第一边的上开口第一边横截面的上开口的宽度等于第二边横截面的上开口的宽度的情况下，由于在第一高度下，第一边的横截面的面积大于第二边的横截面的面积，一方面，相同面积的情况下，第一边的横截面的高度要小于第二边的横截面的高度；另一方面，第一边上的封框胶受到刮刀的压力大于第二边上的封框胶受到刮刀的压力，因此综合两方面因素，相对于现有技术能够降低第二边上的封框胶的高度，从而第一边和第二边上形成的封框胶的高度能够接近一致。或者，在第一边横截面的上开口的宽度小于第二边横截面的上开口的宽度的情况下，再一方面，减小了第一边上的封框胶的下料量，综合三方面因素，相对于现有技术能够降低第二边上的封框胶的高度，从而使得第一边和第二边上形成的封框胶的高度能够接近一致。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。
本申请要求于2015年09月24日提交的名称为“一种印刷网板及封框胶的印刷方法”的中国专利申请No.201510618106.2的优先权，其全文通过引用合并于本文。

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  1. 一种印刷网版，包括：网框、固定在所述网框上的丝网、形成在所述丝网上的薄膜，所述丝网未被所述薄膜覆盖的部分形成矩形环状的下料口；其中，
    矩形环包括相对的两个第一边和相对的两个第二边；所述第一边的横截面的上开口的宽度小于或等于所述第二边的横截面的上开口的宽度，且在第一高度下，所述第一边的横截面的面积大于所述第二边的横截面的面积，所述第一高度小于所述薄膜的厚度。
  2. 根据权利要求1所述的印刷网版，其中，所述第一边的横截面为正梯形，所述第二边的横截面为倒梯形。
  3. 根据权利要求2所述的印刷网版，其中，所述第一边的横截面的上开口的宽度等于所述第二边的横截面的下开口的宽度，所述第一边的横截面的下开口的宽度等于所述第二边的横截面的上开口的宽度。
  4. 根据权利要求1所述的印刷网版，其中，在所述第一边横截面的上开口的宽度等于所述第二边横截面的上开口的宽度的情况下；
    所述第一边的横截面为正梯形，所述第二边的横截面为矩形；或者，
    所述第一边的横截面为矩形，所述第二边的横截面为倒梯形。
  5. 根据权利要求2-4任一项所述的印刷网版，其中，所述梯形为等腰梯形。
  6. 根据权利要求5所述的印刷网版，其中，在所述第一边的横截面为正梯形，所述第二边的横截面为矩形的情况下，所述正梯形的腰与所述正梯形的下底形成的夹角的取值范围为2°-19°。
  7. 根据权利要求1所述的印刷网版，其中，所述第一边的横截面的至少一个侧边为阶梯形；和/或，
    所述第二边的横截面的至少一个侧边为阶梯形。
  8. 根据权利要求7所述的印刷网版，其中，所述第一边的横截面的两个侧边为对称的阶梯形；和/或，
    所述第二边的横截面的两个侧边为对称的阶梯形。
  9. 一种封框胶的印刷方法，包括：
    将权利要求1-8任一项所述的印刷网版的下料口与待印刷的基板上的 封装区域对应；
    在印刷网版的下料口放置封框胶；
    利用刮刀沿与所述第二边平行的方向一次刮涂所述封框胶；以及
    将所述印刷网版与所述待印刷的基板分离。
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