WO2016074361A1 - 用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法 - Google Patents

用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法 Download PDF

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Publication number
WO2016074361A1
WO2016074361A1 PCT/CN2015/072645 CN2015072645W WO2016074361A1 WO 2016074361 A1 WO2016074361 A1 WO 2016074361A1 CN 2015072645 W CN2015072645 W CN 2015072645W WO 2016074361 A1 WO2016074361 A1 WO 2016074361A1
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WIPO (PCT)
Prior art keywords
mask
channel
passage
glass
glass substrate
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PCT/CN2015/072645
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English (en)
French (fr)
Inventor
吴海东
Original Assignee
京东方科技集团股份有限公司
鄂尔多斯市源盛光电有限责任公司
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Application filed by 京东方科技集团股份有限公司, 鄂尔多斯市源盛光电有限责任公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/889,106 priority Critical patent/US9673426B2/en
Publication of WO2016074361A1 publication Critical patent/WO2016074361A1/zh

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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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
    • H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the present disclosure relates to the field of display packaging technology, and more particularly to a mask for glass glue coating and a coating method using the same.
  • the glass glue coating process is an indispensable process.
  • 1a and 1b are respectively a schematic plan view and a cross-sectional structural view of a mask used in the prior art OLED packaging process.
  • the mask 1 for glass glue coating in the prior art has a plurality of channel regions 2 for the passage of the glass glue, and the other regions are the shielding regions, and the region of the channel region 2 is surrounded.
  • the shape and size correspond to the shape and size of the display area of the display panel.
  • the glass paste needs to be transmitted through the channel region 2 of the mask 1 to be transferred onto the glass substrate 3.
  • the mask structure shown in the prior art is used.
  • the glass glue 4 coated on the glass substrate 3 is easily formed into a gap or a bubble, thereby causing a poor packaging effect, and the barrier property of the packaged display to water and oxygen is lowered. And ultimately affect the life of the various electronic components in the display.
  • the purpose of the technical solution of the present disclosure is to provide a mask for glass glue coating and a coating method using the same, and to solve the glass glue coated by the mask in the prior art. Easy to create problems with gaps and bubbles.
  • the present disclosure provides a mask for glass glue coating, through which a passage for a glass paste is formed through a first surface and a second surface, the passage extending over the first surface and the second surface Formed into a predetermined pattern, wherein an opening width of the channel at the first surface is greater than The width of the opening of the two surfaces.
  • the inner walls of the two sides of the channel are formed as a plane, the angle of inclination of the plane relative to the second surface being from about 40 degrees to about 50 degrees.
  • the inner walls of both sides of the channel are formed as curved surfaces, the curved surface is formed in an arc shape having a predetermined bending curvature, and the angle of inclination of the tangent plane of the curved surface with respect to the second surface is about 40 degrees to About 50 degrees.
  • the inner walls of both sides of the channel are formed as curved surfaces, the curved surface including a first planar portion that is inclined relative to the second surface and a second planar portion that is perpendicular relative to the second surface.
  • the channel is provided with a mesh of metal thin wires or polymer fine wires.
  • the polymeric filaments are nylon threads or polyethylene terephthalate threads.
  • the meshed metal fine wires or polymer fine wires have a pore diameter of 30 to 50 ⁇ m.
  • the shape of the predetermined pattern corresponds to the shape of the display area of the display panel to be packaged.
  • a plurality of the channels having the predetermined pattern are formed on the mask.
  • the predetermined pattern is formed as a rectangle, wherein the channel includes a first portion having a first extending direction and a second portion having a second extending direction perpendicular to the first extending direction.
  • the opening width of the channel at the first surface and the second surface is a fixed value, respectively, along the direction in which the channel extends.
  • the present disclosure also provides a glass glue coating method using the mask according to any one of the above, wherein the glass glue coating method comprises:
  • the mask is separated from the glass substrate in a direction perpendicular to the glass substrate, and the glass paste in the channel is partially retained on the glass substrate.
  • the opening width of the passage on the first surface is larger than the opening width on the second surface, when the side of the smaller width of the passage is made to face the glass substrate downward, the side of the larger opening width faces upward
  • the mask of the present disclosure is used in the channel, compared with the structure in which the upper and lower widths of the channel of the prior art mask plate are uniform.
  • the inner glass glue is more likely to fill the narrower portion, avoiding the occurrence of bubbles or gaps in the glass glue filled in the channel, and making the coating process of the entire glass glue more uniform.
  • 1a is a schematic plan view showing a planar structure of a mask used in a prior art OLED packaging process
  • FIG. 1b is a schematic cross-sectional structural view of a mask used in a prior art OLED packaging process
  • 2a is a schematic view of a process of coating a prior art glass glue
  • 2b is a schematic structural view of a glass paste formed on a glass substrate by using a mask of the prior art
  • FIG. 3 is a schematic plan view showing the structure of the mask according to the first embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional structural view of a mask according to a first embodiment of the present disclosure
  • FIG. 5 is a schematic cross-sectional structural view of a mask according to a second embodiment of the present disclosure.
  • FIG. 6 is a schematic cross-sectional structural view of a mask according to a third embodiment of the present disclosure.
  • Figure 7 is a schematic structural view of the passage
  • FIG. 8a to 8c are schematic views showing a process of coating a glass paste by using the mask of the embodiment of the present disclosure.
  • FIG. 3 is a schematic plan view of a mask according to a first embodiment of the present disclosure
  • FIG. 4 is a cross-sectional structural view of the mask according to the first embodiment of the present disclosure.
  • the mask 10 of the first embodiment of the present disclosure includes:
  • a passage 20 for the passage of the glass paste is formed through the first surface 11 and the second surface 12, and the passage 20 extends over the first surface 11 and the second surface 12 to form a predetermined pattern, wherein the passage 20
  • the opening width of the first surface 11 is greater than the opening width of the second surface 12.
  • the opening width of the passage on the first surface is larger than the opening width on the second surface, when the side of the smaller width of the passage is made to face the glass substrate downward, the side of the larger opening width faces upward
  • the mask of the present disclosure is used to form a glass glue in the channel, compared with the structure in which the upper and lower widths of the channel of the prior art mask board are uniform. It is easier to fill the narrower part and avoid the presence of bubbles in the glass glue filled in the channel. Or the case of a gap, and the coating process of the entire glass glue is more uniform.
  • the opening width of the channel 20 at the first surface 11 is a fixed first value
  • the opening width of the second surface 12 is a fixed second value, the first value being greater than the second value
  • the opening width of the channel 20 at the first surface 11 and the second surface 12 may not be fixed values, respectively, but the opening width of the channel 20 at each position of the first surface 11 is greater than that at the second surface.
  • the opening width of the corresponding position of 21 may not be fixed values, respectively, but the opening width of the channel 20 at each position of the first surface 11 is greater than that at the second surface.
  • the opening width of the channel 20 at one of the positions of the first surface 11 refers to the distance between the two sidewalls of the opening formed by the channel 20 on the first surface 11 in a section perpendicular to the direction in which the channel 20 extends;
  • the opening width of the passage 20 at one of the positions of the second surface 12 means the distance between the two side walls of the opening formed by the passage 20 on the second surface 12 in a section perpendicular to the direction in which the passage 20 extends.
  • the above extending direction refers to a direction in which the channel extends on the first surface and the second surface to form a predetermined pattern.
  • the inner walls of both sides of the channel 20 are formed into a planar structure, that is, in a section perpendicular to the direction in which the channel 20 extends, the cross section of the channel 20 is formed as a trapezoidal groove structure as shown in FIG.
  • the channel 20 is attached.
  • the opening of one side of the glass substrate is narrow, and the inclined planar structure is more favorable for the sliding of the glass glue. Therefore, comparing the cross-sectional structure diagram of the prior art mask shown in FIG.
  • the mask plate of the present disclosure is used in the channel 20
  • the inner glass glue is more likely to fill the narrower portion, avoiding the occurrence of bubbles or nicks in the glass glue filled in the channel 20, and making the coating process of the entire glass glue more uniform.
  • the plane formed by the inner walls of the two sides of the channel 20 is inclined at an angle of about 40 degrees to about 50 degrees with respect to the second surface 12.
  • the shape of the predetermined pattern formed by the extension of the channel 20 on the first surface 11 and the second surface 20 corresponds to the shape of the display area of the display panel to be packaged, and as shown in FIG. 3, the mask 10 is A plurality of the channels 20 having the predetermined pattern are formed thereon.
  • the display area of the display panel is formed in a rectangular shape, so that the predetermined pattern is also formed into a corresponding rectangle, and the sides of the rectangle are connected by a circular arc.
  • the channel 20 includes a first portion 21 having a first direction of extension and a second portion 22 having a second direction of extension perpendicular to the first direction of extension, correspondingly perpendicular to the first portion
  • the cross-section AA of 21 and the cross-section BB perpendicular to the second portion 22, the shape of the passage 20 is formed as shown in Fig. 4. Again, in the arc At the joint, perpendicular to the section C-C of the arc tangent, the shape of the passage 20 is also formed as shown in Fig. 4.
  • FIG. 5 is a schematic cross-sectional view of a mask according to a second embodiment of the present disclosure.
  • the mask plate 10 has a channel 20 formed through the first surface 11 and the second surface 12, and the channel 20 is on the first surface 11
  • the opening width is larger than the opening width of the second surface 12, however, unlike the first embodiment, the inner walls of both sides of the channel 20 are formed into a curved structure, and the curved surface is formed into a curved arc with a predetermined curvature. Curvature.
  • the angle of inclination of the tangent plane of the curved surface relative to the second surface 12 is from about 40 degrees to about 50 degrees.
  • the tangent plane is a point on the curved surface, and is used as a plane tangent to the curved surface. Those skilled in the art should be able to understand the manner in which the tangent plane is calculated from the curved surface, and will not be described in detail herein.
  • FIG. 6 is a schematic cross-sectional structural view of a mask according to a third embodiment of the present disclosure.
  • the inner walls of both sides of the passage 20 are formed into a curved structure, but the curved shape of the curved structure is different from that of the second embodiment.
  • the curved surface formed by the inner walls of the two sides of the channel 20 includes a first planar portion 23 that is inclined relative to the second surface 12 and a second planar portion 24 that is perpendicular to the second surface 12, wherein A planar portion 23 is further from the second planar portion 24 than the second surface 12.
  • the angle of inclination of the first planar portion 23 relative to the second surface 12 is from about 40 degrees to about 50 degrees.
  • the structure of the channel 20 in this embodiment is the same as that in the first embodiment.
  • the opening of the channel 20 is close to the opening of the glass substrate, and the present disclosure is adopted in comparison with the structure in which the upper and lower widths of the channel of the prior art mask are uniform.
  • the glass glue in the channel is more likely to fill the narrower portion, avoiding the occurrence of bubbles or gaps in the glass glue filled in the channel, and making the coating process of the entire glass glue more uniform.
  • the mask sheets of the first embodiment, the second embodiment, and the third embodiment of the present disclosure may be woven from a polymer or a metal thin wire.
  • the channel formed on the mask is provided with a mesh metal wire or a polymer wire
  • the polymer thin wire is a nylon wire or a polyethylene terephthalate wire, and typically
  • the meshed metal fine wires or polymer fine wires have a pore diameter of from about 30 micrometers to about 50 micrometers. As shown in Fig. 7, when the glass paste is applied by this structure, the effect of screen printing can be achieved.
  • Another embodiment of the present disclosure further provides a glass glue coating method using the above mask.
  • the mask structure of the first embodiment is taken as an example, in combination with FIG. 8a to FIG. 8c, wherein the glass glue coating method comprises:
  • the mask 10 is placed on the glass substrate 30, and the second surface 12 is adhered to the glass substrate 30, and the channel 20 of the predetermined pattern and the edge of the glass substrate 30 to be coated are applied. Aligned
  • the squeegee 40 is used to push the glass glue 50 on the first surface 11 in a direction parallel to the first surface 11 such that the pushed glass glue 50 fills into the channel as it passes through the channel 20 ;
  • the mask 10 is separated from the glass substrate 30 in a direction perpendicular to the glass substrate 30, and the glass paste in the channel 20 is partially retained on the glass substrate 30.
  • the width of the glass paste remaining on the glass substrate 30 is equal to the opening width of the channel at the second surface, because the mask plate 10 is in a direction perpendicular to the glass substrate 30 and the glass substrate 30.
  • the inner wall protruding on both sides of the channel 20 moves the upper glass tape, and only the glass glue of the channel 20 above the opening of the second surface remains on the glass substrate 30 to form a regular shape to satisfy the display. Coating requirements for glass glue in the panel.
  • the glass glue coating method of the mask according to the embodiment of the present disclosure can avoid the occurrence of bubbles or gaps in the glass glue filled in the channel, and make the coating process of the entire glass glue more uniform.

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Abstract

本公开提供一种用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法，该掩膜板包括贯通第一表面和第二表面形成有用于玻璃胶通过的通道，所述通道在所述第一表面和所述第二表面上延伸形成为预定图形，其中所述通道在所述第一表面的开口宽度大于在所述第二表面的开口宽度。

Description

用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法
相关申请的交叉引用
本公开主张在2014年11月10日在中国提交的中国专利申请号No.201410643443.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示器封装技术领域，尤其是指一种用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法。
背景技术
在有机发光二极管显示器(OLED)的封装过程中，玻璃胶涂布工艺是必不可少的工艺过程。
图1a和图1b分别为现有技术OLED封装过程中，所使用掩膜板的平面结构示意图和剖面结构示意图。结合图1a和图1b，现有技术中用于玻璃胶涂布的掩膜板1上具有多个用于玻璃胶通过的通道区域2，其他区域为遮挡区，该通道区域2的所围设的形状与大小和显示面板的显示区域的形状与大小对应。
如图2a和图2b所示，在封装过程中，需要使玻璃胶通过掩膜板1的通道区域2透过而转印到玻璃基板3上，然而采用现有技术所示的掩膜板结构，在涂布速度掌握不好的情况下，极易使涂布在玻璃基板3上的玻璃胶4形成缺口或气泡，从而导致封装效果变差，使封装后的显示器对水氧的阻隔能力下降，并最终影响到显示器内各电子部件的寿命。
发明内容
鉴于此，本公开技术方案的目的是提供一种用于玻璃胶涂布的掩膜板和采用该掩膜板的涂布方法，解决采用现有技术中的掩膜板所涂布的玻璃胶易产生缺口和气泡的问题。
本公开提供一种用于玻璃胶涂布的掩膜板，贯通第一表面和第二表面形成有用于玻璃胶通过的通道，所述通道在所述第一表面和所述第二表面上延伸形成为预定图形，其中所述通道在所述第一表面的开口宽度大于在所述第 二表面的开口宽度。
任选地，所述通道的两侧内壁形成为平面，所述平面相对于所述第二表面的倾斜角度为约40度至约50度。
任选地，所述通道的两侧内壁形成为曲面，所述曲面形成为弧形，具有预定弯曲曲率，且所述曲面的切平面相对于所述第二表面的倾斜角度为约40度至约50度。
任选地，所述通道的两侧内壁形成为曲面，所述曲面包括相对于所述第二表面倾斜的第一平面部分和相对于所述第二表面垂直的第二平面部分。
任选地，所述通道内布设有网状的金属细线或聚合物细线。
任选地，所述聚合物细线为尼龙线或聚对苯二甲酸乙二酯线。
任选地，所述网状的金属细线或聚合物细线的孔径为30至50微米。
任选地，所述预定图形的形状与待封装的显示面板的显示区域的形状对应。
任选地，所述掩膜板上形成有多个具有所述预定图形的所述通道。
任选地，所述预定图形形成为长方形，其中所述通道包括具有第一延伸方向的第一部分和具有与所述第一延伸方向相垂直的第二延伸方向的第二部分。
任选地，沿所述通道的延伸方向，所述通道在所述第一表面和所述第二表面的开口宽度分别为固定数值。
本公开还提供一种采用如上任一项所述掩膜板的玻璃胶涂布方法，其中，所述玻璃胶涂布方法包括：
将所述掩膜板放置于玻璃基板上，且使所述第二表面与所述玻璃基板相贴合，并使预定图形的所述通道与玻璃基板的待涂布边缘相对准；
利用刮板在所述第一表面上推动玻璃胶沿与所述第一表面平行的方向移动，使被推动的玻璃胶在经过所述通道时填充进入所述通道内；
使所述掩膜板沿垂直于玻璃基板的方向与玻璃基板分离，所述通道内的玻璃胶被部分地保留在玻璃基板上。
本公开具体实施例上述技术方案中的至少一个具有以下有益效果：
由于所述通道在所述第一表面的开口宽度大于在所述第二表面的开口宽度，因此当使通道较小宽度的一面朝下贴合玻璃基板，较大开口宽度的一面朝上进行玻璃胶涂布时，由于通道贴合玻璃基板的一面开口较窄，相较于现有技术掩膜板的通道上下宽度一致的结构，采用本公开所述掩膜板，在通道 内玻璃胶更容易使较窄部分填充满，避免填充在通道内的玻璃胶出现有气泡或缺口的情况，且使整个玻璃胶的涂布过程更加均匀。
附图说明
图1a为现有技术OLED封装过程中，所使用掩膜板的平面结构示意图；
图1b为现有技术OLED封装过程中，所使用掩膜板的剖面结构示意图；
图2a为现有技术玻璃胶涂布的过程示意图；
图2b为采用现有技术的掩膜板，在玻璃基板上形成的玻璃胶的结构示意图；
图3为发明第一实施例所述掩膜板的平面结构示意图；
图4为本公开第一实施例所述掩膜板的剖面结构示意图；
图5为本公开第二实施例所述掩膜板的剖面结构示意图；
图6为本公开第三实施例所述掩膜板的剖面结构示意图；
图7为所述通道内的结构示意图；
图8a至图8c为采用本公开实施例所述掩膜板，进行玻璃胶涂布的过程示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本公开进行详细描述。
图3为本公开第一实施例所述掩膜板的平面结构示意图，图4为本公开第一实施例所述掩膜板的剖面结构示意图。结合图3与图4，本公开第一实施例所述掩膜板10包括：
贯通第一表面11和第二表面12形成有用于玻璃胶通过的通道20，所述通道20在所述第一表面11和所述第二表面12上延伸形成为预定图形，其中所述通道20在所述第一表面11的开口宽度大于在所述第二表面12的开口宽度。
由于所述通道在所述第一表面的开口宽度大于在所述第二表面的开口宽度，因此当使通道较小宽度的一面朝下贴合玻璃基板，较大开口宽度的一面朝上进行玻璃胶涂布时，由于通道贴合玻璃基板的一面开口较窄，相较于现有技术掩膜板的通道上下宽度一致的结构，采用本公开所述掩膜板，在通道内玻璃胶更容易使较窄部分填充满，避免填充在通道内的玻璃胶出现有气泡 或缺口的情况，且使整个玻璃胶的涂布过程更加均匀。
任选地，所述通道20在第一表面11的开口宽度为固定的第一数值，在第二表面12的开口宽度为固定的第二数值，该第一数值大于第二数值。
另外，所述通道20在第一表面11和第二表面12的开口宽度也可以分别不为固定数值，但所述通道20在第一表面11的每一位置的开口宽度均大于在第二表面21的对应位置的开口宽度。
其中，通道20在第一表面11的其中一位置的开口宽度是指：在垂直于通道20延伸方向的截面上，通道20在第一表面11上所形成开口两侧壁之间的距离；同理，通道20在第二表面12的其中一位置的开口宽度是指：在垂直于通道20延伸方向的截面上，通道20在第二表面上12所形成开口两侧壁之间的距离。需要说明的是，上述延伸方向是指通道在第一表面和第二表面延伸形成预定图形的方向。
具体地，如图4所示，所述通道20的两侧内壁形成为平面结构，也即在垂直于通道20延伸方向的截面上，通道20的剖面形成为如图4的梯形凹槽结构，采用本公开实施例所述掩膜板，当使通道20的较小开口宽度的一面朝下贴合玻璃基板，较大开口宽度的一面朝上进行玻璃胶涂布时，由于通道20贴合玻璃基板的一面开口较窄，且倾斜的平面结构更利于玻璃胶的下滑，因此对比图1b所示现有技术掩膜板的剖面结构示意图，采用本公开所述掩膜板，在通道20内玻璃胶更容易使较窄部分填充满，避免填充在通道20内的玻璃胶出现有气泡或缺口的情况，且使整个玻璃胶的涂布过程更加均匀。
本领域技术人员能够了解，所述掩膜板10上形成通道20的其他区域为遮挡区，进行玻璃胶涂布时，玻璃胶仅能够透过通道20而通过。
进一步结合图4，为进一步保证玻璃胶涂布的均匀性，所述通道20的两侧内壁所形成平面相对于第二表面12的倾斜角度为约40度至约50度。
另外，所述通道20在第一表面11和第二表面20延伸所形成的预定图形的形状与待封装的显示面板的显示区域的形状对应，且如图3所示，所述掩膜板10上形成有多个具有所述预定图形的所述通道20。通常，显示面板的显示区域形成为长方形，因此所述预定图形也形成为对应的长方形，长方形的各边之间以圆弧连接。结合所述预定图形的该结构，所述通道20包括具有第一延伸方向的第一部分21和具有与第一延伸方向相垂直的第二延伸方向的第二部分22，相应的，垂直于第一部分21的截面A-A和垂直于第二部分22的截面B-B上，通道20的形状均形成为图4的所示结构。同样，在圆弧 连接处，垂直于圆弧切线的截面C-C上，通道20的形状也形成为图4的所示结构。
图5为本公开第二实施例所述掩膜板的剖面结构示意图。参阅图5，在第二实施例中，与第一实施例相同，所述掩膜板10上贯通第一表面11和第二表面12形成通道20，所述通道20在所述第一表面11的开口宽度大于在所述第二表面12的开口宽度，然而与第一实施例不同，所述通道20的两侧内壁形成为曲面结构，且该曲面结构形成为弯曲的弧形，具有预定弯曲曲率。
任选地，所述曲面的切平面相对于第二表面12的倾斜角度为约40度至约50度。其中，切平面为过曲面上的一点，所作为曲面相切的平面。本领域技术人员应该能够了解根据曲面计算切平面的方式，在此不详细描述。
采用该种设置方式，同样能够达到避免填充在通道20内的玻璃胶出现有气泡或缺口的情况，且使整个玻璃胶的涂布过程更加均匀的效果。
图6为本公开第三实施例所述掩膜板的剖面结构示意图。参阅图6，在第三实施例中，与第二实施例相同，所述通道20的两侧内壁形成为曲面结构，但该曲面结构的弯曲形状与第二实施例不同。第三实施例中，所述通道20的两侧内壁所形成的曲面结构包括相对于第二表面12倾斜的第一平面部分23和相对于第二表面12垂直的第二平面部分24，其中第一平面部分23较第二平面部分24与第二表面12的距离更远。
任选地，第一平面部分23相较于第二表面12的倾斜角度为约40度至约50度。
采用该实施例所述通道20的结构，与第一实施例相同，通道20贴合玻璃基板的一面开口较窄，相较于现有技术掩膜板的通道上下宽度一致的结构，采用本公开第三实施例时，在通道内玻璃胶更容易使较窄部分填充满，避免填充在通道内的玻璃胶出现有气泡或缺口的情况，且使整个玻璃胶的涂布过程更加均匀。
本公开第一实施例、第二实施例和第三实施例的掩膜板，可以由聚合物或金属细线编织而成。且典型地，掩膜板上所形成的所述通道内布设有网状的金属线或聚合物线，所述聚合物细线为尼龙线或聚对苯二甲酸乙二酯线，且典型地，所述网状的金属细线或聚合物细线的孔径为约30微米至约50微米。如图7所示，采用该种结构进行玻璃胶涂布时，能够达到丝网印刷的效果。
本公开具体实施例另一方面还提供一种采用上述掩膜板的玻璃胶涂布方 法，以第一实施例所述掩膜板结构为例，结合图8a至图8c，其中所述玻璃胶涂布方法包括：
将所述掩膜板10放置于玻璃基板30上，且使所述第二表面12与所述玻璃基板30相贴合，并使预定图形的所述通道20与玻璃基板30的待涂布边缘相对准；
利用刮板40在所述第一表面11上推动玻璃胶50沿与所述第一表面11平行的方向移动，使被推动的玻璃胶50在经过所述通道20时填充进入所述通道内20；
使所述掩膜板10沿垂直于玻璃基板30的方向与玻璃基板30相分离，所述通道20内的玻璃胶被部分地保留在玻璃基板30上。
具体地，被保留在玻璃基板30上玻璃胶的宽度等于所述通道在所述第二表面的开口宽度，这是由于在所述掩膜板10沿垂直于玻璃基板30的方向与玻璃基板30相分离的过程中，在通道20内部突出的两侧内壁将上方的玻璃胶带走，仅将通道20在第二表面的开口上方的玻璃胶保留在玻璃基板30上，形成规则形状，以满足显示面板中玻璃胶的涂布要求。
采用本公开实施例所述掩膜板的玻璃胶涂布方法，能够避免使填充在通道内的玻璃胶出现有气泡或缺口的情况，且使整个玻璃胶的涂布过程更加均匀。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (12)

  1. 一种用于玻璃胶涂布的掩膜板，贯通第一表面和第二表面形成有用于玻璃胶通过的通道，所述通道在所述第一表面和所述第二表面上延伸形成为预定图形，其中所述通道在所述第一表面的开口宽度大于在所述第二表面的开口宽度。
  2. 如权利要求1所述的掩膜板，其中所述通道的两侧内壁形成为平面，所述平面相对于所述第二表面的倾斜角度为约40度至约50度。
  3. 如权利要求1所述的掩膜板，其中所述通道的两侧内壁形成为曲面，所述曲面形成为弧形，具有预定弯曲曲率，且所述曲面的切平面相对于所述第二表面的倾斜角度为约40度至约50度。
  4. 如权利要求1所述的掩膜板，其中所述通道的两侧内壁形成为曲面，所述曲面包括相对于所述第二表面倾斜的第一平面部分和相对于所述第二表面垂直的第二平面部分。
  5. 如权利要求1至4任一所述的掩膜板，其中所述通道内布设有网状的金属细线或聚合物细线。
  6. 如权利要求5所述的掩膜板，其中所述聚合物细线为尼龙线或聚对苯二甲酸乙二酯线。
  7. 如权利要求5或6所述的掩膜板，其中所述网状的金属细线或聚合物细线的孔径为约30微米至约50微米。
  8. 如权利要求1-7任一项所述的掩膜板，其中所述预定图形的形状与待封装的显示面板的显示区域的形状对应。
  9. 如权利要求1-8任一项所述的掩膜板，其中所述掩膜板上形成有多个具有所述预定图形的所述通道。
  10. 如权利要求1-9任一项所述的掩膜板，其中所述预定图形形成为长方形，其中所述通道包括具有第一延伸方向的第一部分和具有与所述第一延伸方向相垂直的第二延伸方向的第二部分。
  11. 如权利要求1-10任一项所述的掩膜板，其中沿所述通道的延伸方向，所述通道在所述第一表面和所述第二表面的开口宽度分别为固定数值。
  12. 一种采用权利要求1至11任一项所述掩膜板的玻璃胶涂布方法，包括：
    将所述掩膜板放置于玻璃基板上，且使所述第二表面与所述玻璃基板相 贴合，并使预定图形的所述通道与玻璃基板的待涂布边缘相对准；
    利用刮板在所述第一表面上推动玻璃胶沿与所述第一表面平行的方向移动，使被推动的玻璃胶在经过所述通道时填充进入所述通道内；以及
    使所述掩膜板沿垂直于玻璃基板的方向与玻璃基板分离，所述通道内的玻璃胶被部分地保留在玻璃基板上。
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