WO2021253724A1 - Carte mère de substrat d'affichage et son procédé de fabrication - Google Patents

Carte mère de substrat d'affichage et son procédé de fabrication Download PDF

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Publication number
WO2021253724A1
WO2021253724A1 PCT/CN2020/130556 CN2020130556W WO2021253724A1 WO 2021253724 A1 WO2021253724 A1 WO 2021253724A1 CN 2020130556 W CN2020130556 W CN 2020130556W WO 2021253724 A1 WO2021253724 A1 WO 2021253724A1
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WO
WIPO (PCT)
Prior art keywords
display substrate
sub
pixels
pixel
effective area
Prior art date
Application number
PCT/CN2020/130556
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English (en)
Chinese (zh)
Inventor
韩志斌
韩佰祥
肖翔
高阔
张晓东
Original Assignee
深圳市华星光电半导体显示技术有限公司
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.)
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Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Publication of WO2021253724A1 publication Critical patent/WO2021253724A1/fr

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Classifications

    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • 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
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing

Definitions

  • This application relates to the field of display technology, and in particular to a display substrate mother board and a preparation method thereof.
  • OLED displays have gradually become high-end displays that replace liquid crystals due to their ultra-high contrast, wide color gamut, fast response, and active light-emitting advantages.
  • the size of OLED displays and OLED TVs continues to increase, the size of their corresponding mass-produced glass substrates is also increasing.
  • OLED products of different sizes need to be prepared on the same glass substrate, that is, mixed arrangement.
  • the line-bank printing method of luminous ink will be restricted. It is necessary to rotate the OLED panel of one product after printing.
  • the OLED panel of another product is printed at 90° on the glass substrate. This has led to an increase in equipment costs and an increase in production time, which is unfavorable for mass production.
  • the present application provides a display substrate mother board and a preparation method thereof, which can solve the technical problem that when OLED products of different sizes (ie, display substrates) are mixed and arranged on the display substrate mother board, the equipment cost and production time increase.
  • the present application provides a display substrate mother board, which includes a first display substrate and a second display substrate;
  • At least two of the first display substrates are arranged at intervals along a first direction;
  • At least two of the second display substrates are arranged at intervals along a first direction, and the first display substrate is located on at least one side of the second display substrate in the second direction.
  • the two directions are perpendicular to each other;
  • the long axis of the first display substrate is parallel to the second direction, and the long axis of the second display substrate is parallel to the first direction;
  • the sub-pixels of the same color on the first display substrate are arranged at intervals along the first direction
  • the sub-pixels of the same color on the second display substrate are arranged at intervals along the first direction.
  • the long axis of the sub-pixel on the first display substrate is parallel to the short axis of the first display substrate
  • the long axis of the sub-pixel on the second display substrate is parallel to the long axis of the sub-pixel on the second display substrate.
  • the long axis of the second display substrate is parallel.
  • the sub-pixels of the same color on the first display substrate and the sub-pixels of the same color on the second display substrate are arranged at intervals along the first direction.
  • the first sub-pixels, the second sub-pixels, and the third sub-pixels on the first display substrate are sequentially arranged along the second direction, and the The first sub-pixels, the second sub-pixels, and the third sub-pixels are sequentially arranged along the second direction.
  • the first sub-pixels on the first display substrate and the first sub-pixels on the second display substrate have the same pixel opening width in the second direction;
  • the second sub-pixels on the first display substrate and the second sub-pixels on the second display substrate have the same pixel opening width in the second direction;
  • the third sub-pixels on the first display substrate and the second sub-pixels are equal.
  • the pixel opening widths in the second direction of the sub-pixels of the first display substrate and the sub-pixels of the second display substrate are equal.
  • the pixel opening area of the sub-pixels on the first display substrate is equal to the pixel opening area of the sub-pixels on the second display substrate.
  • the present application also provides a method for preparing a display substrate motherboard, the motherboard substrate includes a first effective area and a second effective area;
  • the method includes the following steps:
  • Step S1 preparing a pixel definition layer on the mother substrate, and patterning the pixel definition layer to form sub-pixel holes corresponding to the first effective area and the second effective area;
  • Step S2 using nozzles arranged in the row/column direction to linearly locate the sub-pixel holes in the first effective area and the sub-pixel holes in the second effective area on the mother substrate in the first direction.
  • Step S3 preparing a cathode layer on the luminescent material
  • Step S4 preparing a thin film encapsulation layer on the cathode layer to form a first display substrate corresponding to the first effective area and a second display substrate corresponding to the second effective area.
  • the sub-pixel holes corresponding to the first effective area and the sub-pixel holes corresponding to the second effective area are formed
  • the widths of the pixel openings in the second direction are all equal.
  • the pixel opening area corresponding to the sub-pixel hole in the first effective area is equal to the pixel opening area corresponding to the sub-pixel hole in the second effective area.
  • the nozzle simultaneously prepares the luminescent material of the same color in the first effective area and the second effective area along the first direction, so as to be in the first direction.
  • the luminescent materials of the same color are formed in the upward sub-pixel holes.
  • the size of the first effective area is different from that of the second effective area.
  • the long axis of the sub-pixel hole formed in the first effective area is the same as that of the The short axis of the first effective area is parallel, and the long axis of the sub-pixel hole formed in the second effective area is parallel to the long axis of the second effective area.
  • the size of the first display substrate and the second display substrate are different.
  • the present application also provides a display substrate mother board, including a first display substrate and a second display substrate, the first display substrate and the second display substrate have different sizes;
  • At least two of the first display substrates are arranged at intervals along a first direction;
  • At least two of the second display substrates are arranged at intervals along a first direction, and the first display substrate is located on at least one side of the second display substrate in the second direction.
  • the two directions are perpendicular to each other;
  • the long axis of the first display substrate is parallel to the second direction, and the long axis of the second display substrate is parallel to the first direction;
  • the sub-pixels of the same color on the first display substrate are arranged at intervals along the first direction
  • the sub-pixels of the same color on the second display substrate are arranged at intervals along the first direction.
  • the long axis of the sub-pixel on the first display substrate is parallel to the short axis of the first display substrate
  • the long axis of the sub-pixel on the second display substrate is parallel to the long axis of the sub-pixel on the second display substrate.
  • the long axis of the second display substrate is parallel.
  • the sub-pixels of the same color on the first display substrate and the sub-pixels of the same color on the second display substrate are arranged at intervals along the first direction.
  • the first sub-pixels, the second sub-pixels, and the third sub-pixels on the first display substrate are sequentially arranged along the second direction, and the The first sub-pixels, the second sub-pixels, and the third sub-pixels are sequentially arranged along the second direction.
  • the first sub-pixels on the first display substrate and the first sub-pixels on the second display substrate have the same pixel opening width in the second direction;
  • the second sub-pixels on the first display substrate and the second sub-pixels on the second display substrate have the same pixel opening width in the second direction;
  • the third sub-pixels on the first display substrate and the second sub-pixels are equal.
  • the pixel opening widths in the second direction of the sub-pixels of the first display substrate and the sub-pixels of the second display substrate are equal.
  • the pixel opening area of the sub-pixels on the first display substrate is equal to the pixel opening area of the sub-pixels on the second display substrate.
  • the beneficial effects of the present application are: the display substrate mother board provided by the present application and the preparation method thereof, by arranging the long axis of the sub-pixels on the first display substrate in parallel with the short axis of the first display substrate, and the second display substrate
  • the long axis of the sub-pixels on the upper side is arranged parallel to the long axis of the second display substrate, so that the display substrates arranged in different sizes on the display substrate mother board can achieve the purpose of printing luminescent ink in a linear manner at the same time, thereby reducing equipment cost and production time , Which is conducive to mass production of products.
  • FIG. 1 is a schematic diagram of the structure of a display substrate mother board provided by an embodiment of the application
  • FIG. 2 is a flow chart of a method for preparing a display substrate motherboard provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a pixel definition layer on a motherboard substrate provided by an embodiment of the application after patterning;
  • FIG. 4 is a schematic diagram of preparing a luminescent material on a mother board substrate provided by an embodiment of the application;
  • Fig. 5 is a schematic diagram of nozzles arranged along a row/column direction provided by an embodiment of the application.
  • the pixels of the display substrate are usually arranged in a uniform manner. Because the long axis (or long side) direction of the sub-pixels is parallel to the short axis (or short side) direction of the display substrate, the pixel arrangement directions of the two display substrates of different sizes are perpendicular to each other. Therefore, the line-bank printing method for printing luminescent inks/materials will be restricted. After printing a display substrate of one size, the display substrate mother board is rotated 90° and then another size display substrate is printed. This leads to an increase in equipment costs and an increase in production time, which is unfavorable for mass production.
  • a line-bank printing method of display substrate pixel arrangement design is provided.
  • display substrates of different sizes can be directly printed without rotating the display substrate mother board. Therefore, it is suitable for mass production without increasing equipment and time costs.
  • FIG. 1 is a schematic structural diagram of a display substrate motherboard provided by an embodiment of this application.
  • the display substrate mother board 1 includes a first display substrate 11 and a second display substrate 12; at least two of the first display substrates 11 are arranged at intervals along the first direction X; at least two of the second display substrates 12 are arranged along the first
  • the direction X is arranged at intervals, and the first display substrate 11 is located on at least one side of the second display substrate 12 in the second direction Y.
  • the first direction X and the second direction Y are perpendicular to each other.
  • the size of the first display substrate 11 and the second display substrate 12 are different.
  • the size of the first display substrate 11 is 65'’ 8K as an example
  • the size of the second display substrate 12 is 55’’ 4K as an example, but of course it is not limited thereto.
  • first display substrate 11 and the second display substrate 12 may be arranged in multiple rows in the second direction Y. In this embodiment, only the first display substrate 11 is located on the second display substrate. 12 The side in the second direction Y is taken as an example for description.
  • the arrangement of the first display substrate 11 and the second display substrate 12 on the display substrate mother board 1 is: the long axis a1 of the first display substrate 11 and the second direction Y Parallel, the long axis a2 of the second display substrate 12 is parallel to the first direction X. That is, two display substrates of different sizes are arranged perpendicular to each other.
  • the long axis c1 of the sub-pixel 111 on the first display substrate 11 is parallel to the short axis b1 of the first display substrate 11, and the long axis c2 of the sub-pixel 121 on the second display substrate 12 is parallel to the The long axis a2 of the second display substrate 12 is parallel, and the sub-pixels of the same color on the first display substrate 11 and the sub-pixels of the same color on the second display substrate 12 are arranged at intervals along the first direction X cloth.
  • first sub-pixel 1111, the second sub-pixel 1112, and the third sub-pixel 1113 on the first display substrate 11 are sequentially arranged along the second direction Y, and the first sub-pixel 1111 on the second display substrate 12
  • the sub-pixels 1211, the second sub-pixels 1212, and the third sub-pixels 1213 are sequentially arranged along the second direction Y.
  • the first sub-pixel 1111 on the first display substrate 11 and the first sub-pixel 1211 on the second display substrate 12 have the same pixel opening width in the second direction Y; the first display substrate 11 The second sub-pixel 1112 on the second display substrate 12 and the second sub-pixel 1212 on the second display substrate 12 have the same pixel opening width in the second direction Y; the third sub-pixel 1113 on the first display substrate 11 It is the same as the pixel opening width of the third sub-pixel 1213 on the second display substrate 12 in the second direction Y.
  • the pixel opening widths of the sub-pixels 111 of the first display substrate 11 and the sub-pixels 121 of the second display substrate 12 in the second direction Y are equal.
  • the pixel opening area of the sub-pixel 111 on the first display substrate 11 is equal to the pixel opening area of the sub-pixel 121 on the second display substrate 12.
  • this embodiment does not specifically limit the film layers and component structures of the first display substrate 11 and the second display substrate 12.
  • the display substrate mother board of this application is designed in the above-mentioned way, which can realize the simultaneous line-bank printing of display substrates of different sizes under the mixed arrangement of display substrates of different sizes, and can directly print without rotating the display substrate mother board. Display substrates of different sizes. Therefore, it is suitable for mass production without increasing equipment and time costs.
  • the present application also provides a method for preparing the above-mentioned display substrate mother board.
  • a mother board substrate 100 is provided.
  • the mother board substrate 100 includes a first effective area 1001 and a second effective area 1002;
  • the motherboard substrate 100 may be an array drive substrate, that is, the motherboard substrate 100 is provided with an array drive circuit and an array drive circuit corresponding to the first effective area 1001 and the second effective area 1002.
  • the anode of the electrical connection is provided.
  • the method includes the following steps:
  • Step S1 as shown in FIG. 3, a pixel definition layer 1003 is prepared on the mother substrate 100, and the pixel definition layer 1003 is patterned to form a corresponding first effective area 1001 and a corresponding The sub-pixel hole 1004 of the second effective area 1002.
  • the pixel opening area corresponding to the sub-pixel hole 1004 in the first effective area 1001 and the pixel opening area corresponding to the second effective area 1002 are formed.
  • the pixel opening areas of the sub-pixel holes 1004 are equal, and the pixel opening widths of the sub-pixel holes 1004 in the first effective area 1001 and the sub-pixel holes 1004 in the second effective area 1002 in the second direction Y Are equal.
  • the sizes of the first effective area 1001 and the second effective area 1002 are different. It can be understood that the first effective area 1001 and the second effective area 1002 respectively correspond to different sizes. Display substrate.
  • the long axis (i.e., the long side) of the sub-pixel hole 1004 formed in the first effective area 1001 is parallel to the short axis (i.e., the short side) of the first effective area 1001
  • the second The long axis of the sub-pixel hole 1004 formed in the second effective area 1002 is parallel to the long axis of the second effective area 1002.
  • Step S2 as shown in FIG. 4, using nozzles arranged in the row/column direction on the mother substrate 100 in a linear manner along the first direction X in the sub-pixel holes and all the sub-pixel holes in the first effective area 1001
  • a luminescent material is prepared in the sub-pixel holes of the second effective area 1002 to form a first luminescent material 1005, a second luminescent material 1006, and a third luminescent material 1007 that are sequentially arranged in the second direction Y, wherein the first The direction X and the second direction Y are perpendicular to each other.
  • FIG. 5 it is a schematic diagram of nozzles arranged along the row/column direction provided by the embodiment of this application.
  • FIG. 5 only one row of nozzles on an inkjet printing device is taken as an example.
  • One nozzle 200 corresponds to one sub-pixel hole 1004. It can be understood that multiple groups of nozzles 200 may be provided on the inkjet printing device.
  • the nozzle simultaneously prepares luminescent materials of the same color in the first effective area 1001 and the second effective area 1002 along the first direction X, so that the luminescent material in the first direction X
  • the sub-pixel holes 1004 are formed with luminescent materials of the same color.
  • the display substrate mother board is designed in the above-mentioned way, which can realize the line-bank printing of display substrates of different sizes at the same time when the display substrates of different sizes are arranged in a mixed arrangement, and can directly print different display substrates without rotating the display substrate mother board.
  • the size of the display substrate is designed in the above-mentioned way, which can realize the line-bank printing of display substrates of different sizes at the same time when the display substrates of different sizes are arranged in a mixed arrangement, and can directly print different display substrates without rotating the display substrate mother board.
  • Step S3 preparing a cathode layer on the luminescent material.
  • Step S4 preparing a thin film encapsulation layer on the cathode layer to form a first display substrate corresponding to the first effective area and a second display substrate corresponding to the second effective area.
  • the above method can be used to produce display substrate mother boards with different sizes.
  • the display substrate mother board is provided with cutting lanes.
  • the cutting lanes are respectively arranged around the first effective area and the second effective area.
  • the display substrate mother board is cut along the cutting path to obtain a plurality of first display substrates and a plurality of second display substrates.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne une carte mère de substrat d'affichage (1) et son procédé de fabrication. La carte mère de substrat d'affichage (1) comprend un premier substrat d'affichage (11) et un second substrat d'affichage (12). L'axe long (a2) du second substrat d'affichage (12) est parallèle à une première direction (X), et l'axe long (a1) du premier substrat d'affichage (11) est parallèle à une seconde direction (Y). La première direction (X) est perpendiculaire à la deuxième direction (Y). L'axe long (c1) d'un sous-pixel (111) sur le premier substrat d'affichage (11) est parallèle à l'axe court (b1) du premier substrat d'affichage (11). L'axe long (c2) d'un sous-pixel (121) sur le second substrat d'affichage (12) est parallèle à l'axe long (a2) du second substrat d'affichage (12).
PCT/CN2020/130556 2020-06-17 2020-11-20 Carte mère de substrat d'affichage et son procédé de fabrication WO2021253724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010552542.5 2020-06-17
CN202010552542.5A CN111739912A (zh) 2020-06-17 2020-06-17 显示基板母板及其制备方法

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WO2021253724A1 true WO2021253724A1 (fr) 2021-12-23

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PCT/CN2020/130556 WO2021253724A1 (fr) 2020-06-17 2020-11-20 Carte mère de substrat d'affichage et son procédé de fabrication

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111739912A (zh) * 2020-06-17 2020-10-02 深圳市华星光电半导体显示技术有限公司 显示基板母板及其制备方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
US20130286131A1 (en) * 2012-04-26 2013-10-31 Samsung Display Co. Ltd. Printing apparatus and method for manufacturing organic light emitting diode display
CN111048700A (zh) * 2019-12-17 2020-04-21 深圳市华星光电半导体显示技术有限公司 制备oled薄膜的打印装置及其打印方法
CN111162114A (zh) * 2020-03-05 2020-05-15 深圳市华星光电半导体显示技术有限公司 显示阵列基板、显示面板及显示装置
CN111200004A (zh) * 2020-02-27 2020-05-26 深圳市华星光电半导体显示技术有限公司 一种像素结构及其制备方法、显示面板
CN111739912A (zh) * 2020-06-17 2020-10-02 深圳市华星光电半导体显示技术有限公司 显示基板母板及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130286131A1 (en) * 2012-04-26 2013-10-31 Samsung Display Co. Ltd. Printing apparatus and method for manufacturing organic light emitting diode display
CN111048700A (zh) * 2019-12-17 2020-04-21 深圳市华星光电半导体显示技术有限公司 制备oled薄膜的打印装置及其打印方法
CN111200004A (zh) * 2020-02-27 2020-05-26 深圳市华星光电半导体显示技术有限公司 一种像素结构及其制备方法、显示面板
CN111162114A (zh) * 2020-03-05 2020-05-15 深圳市华星光电半导体显示技术有限公司 显示阵列基板、显示面板及显示装置
CN111739912A (zh) * 2020-06-17 2020-10-02 深圳市华星光电半导体显示技术有限公司 显示基板母板及其制备方法

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