CN111146265A - Display panel and preparation method thereof - Google Patents
Display panel and preparation method thereof Download PDFInfo
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- CN111146265A CN111146265A CN202010089598.1A CN202010089598A CN111146265A CN 111146265 A CN111146265 A CN 111146265A CN 202010089598 A CN202010089598 A CN 202010089598A CN 111146265 A CN111146265 A CN 111146265A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/127—Active-matrix OLED [AMOLED] displays comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/127—Active-matrix OLED [AMOLED] displays comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
- H10K59/1275—Electrical connections of the two substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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Abstract
The invention discloses a display panel and a preparation method thereof, wherein the display panel comprises a luminous region and a non-luminous region, and a first substrate, wherein one surface of the first substrate is provided with a lead wire; the second substrate is covered and connected with one surface of the first substrate, which is provided with the lead wires; the second substrate comprises a cover plate; the first electrode is arranged on one surface, facing the first substrate, of the cover plate, the luminescent layer is arranged on one surface, far away from the cover plate, of the first electrode in the luminescent region; the second electrode extends from the non-light-emitting region to the surface of the light-emitting layer far away from the cover plate, and the second electrode of the non-light-emitting region is connected with the lead wires. The display panel and the manufacturing method thereof have the beneficial effects that the anode and the cathode are manufactured on one side of the cover plate of the display panel, and the lead wires are manufactured at the position, corresponding to the cathode, on one side of the array substrate, so that the anode has good flatness, the luminous efficiency of the display panel is improved, and the service life of the display panel is prolonged.
Description
Technical Field
The invention relates to the field of display, in particular to a display panel and a preparation method thereof.
Background
AMOLED (Active-matrix organic light-emitting diode, or Active-matrix organic light-emitting diode) is a display screen technology. Among them, OLEDs (organic light emitting diodes) are a specific type describing thin film display technology: organic electroluminescent display; AM (active matrix or active matrix) refers to the pixel addressing technique behind.
With the high requirements of panel display quality, the AMOLED display gradually occupies a high-end display market due to its color gamut and contrast advantages, but there is still much room for improvement. At present, most OLED preparation adopts an evaporation mode, and in recent years, the printing type OLED preparation gradually shows a head corner, has the advantage of high material utilization rate, and becomes the main development direction of AMOLED display in the future.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a display panel and a manufacturing method thereof to solve the technical problem in the prior art that the flatness of the anode is affected due to too many wires on the array substrate.
The technical scheme for solving the technical problems is as follows: the invention provides a display panel, which comprises a luminous area, a non-luminous area surrounding the luminous area and a first substrate, wherein one surface of the first substrate is provided with a connecting wire; the second substrate is covered and connected with one surface of the first substrate, which is provided with the lead wires; the second substrate comprises a cover plate; the first electrode is arranged on one surface, facing the first substrate, of the cover plate and extends from the non-luminous area to the luminous area; the luminous layer is arranged on one surface, far away from the cover plate, of the first electrode of the luminous zone; and the second electrode extends from the non-luminous area to one surface of the luminous layer far away from the cover plate, and the second electrode of the non-luminous area is connected with the connecting wire.
Furthermore, the second substrate further comprises a retaining wall layer arranged on the first electrode, a plurality of openings are formed in the retaining wall layer, retaining wall structures are arranged in the non-light-emitting areas, the first electrode is exposed in the openings, a plurality of light-emitting units are arranged in the light-emitting layers, each light-emitting unit is correspondingly arranged in each opening, and the second electrode extends to the non-light-emitting areas from the corresponding surfaces of the light-emitting units on the retaining wall structures.
Further, the lead trace corresponds to the second electrode disposed in the non-light emitting region.
Further, the first base plate also comprises a substrate base plate; the shading metal layer is arranged in the non-luminous area on the substrate base plate; the buffer layer is arranged on the second substrate and covers the shading metal layer; an active layer disposed on the buffer layer; the first insulating layer is arranged on the active layer, wherein the orthographic projection of the first insulating layer on the substrate completely falls into the orthographic projection of the active layer on the substrate; the first metal layer is arranged on the first insulating layer; and the second insulating layer is arranged on the buffer layer and covers the active layer, the first insulating layer and the first metal layer.
Further, the active layer includes a first active layer disposed in the non-light emitting region and corresponding to the light shielding metal layer; a second active layer disposed in the light emitting region; the second metal layer is arranged on the second insulating layer and comprises a first metal section which is arranged in the non-luminous area and corresponds to the first active layer, wherein the first metal section comprises at least two pins, one pin penetrates through the second insulating layer and is connected with the first active layer, and the other pin penetrates through the second insulating layer and the buffer layer and is connected with the shading metal layer.
The second metal layer is arranged on the first metal section, and the second metal section is provided with a first metal layer; the connecting and leading wire is arranged on the inner wall of the opening and covers the area of the first metal section exposed out of the opening.
Further, the material of the lead wire comprises at least one of indium zinc oxide, indium tin oxide, aluminum and silver.
The invention also provides a preparation method of the display panel, the display panel comprises a luminous area and a non-luminous area surrounding the luminous area, the preparation method comprises the following steps of preparing a first substrate and a second substrate, and the preparation steps of the second substrate are as follows: providing a cover plate; preparing a first electrode on the cover plate; preparing a retaining wall layer in a non-luminous area on the first electrode, and forming a through hole in the retaining wall layer corresponding to the luminous area; preparing a light-emitting layer in the through hole in the barrier wall layer, wherein the light-emitting layer comprises light-emitting units with at least two colors, and the colors of the adjacent light-emitting units are different; preparing a second electrode on the light emitting unit, wherein the second electrode extends from the surface of the corresponding light emitting unit to the adjacent barrier wall; preparing a lead wire at a position of the first substrate corresponding to the second electrode; and combining the first substrate with the second substrate, wherein the second electrode is connected with the corresponding lead wire.
Further, the second substrate is specifically prepared by the following steps: providing a substrate base plate; preparing a layer of shading metal material on the substrate base plate, and patterning to form a shading metal layer; preparing a buffer layer on the second substrate, wherein the buffer layer covers the shading metal layer; preparing a layer of IGZO material on the buffer layer, and forming an active layer after patterning, wherein the active layer comprises a first active layer corresponding to the light-shielding metal layer and a second active layer arranged in the light-emitting region; preparing a first insulating layer on the active layer, and preparing a first metal layer on the first insulating layer; preparing a second insulating layer on the buffer layer, wherein the second insulating layer covers the active layer, the first insulating layer and the first metal layer; preparing a second metal layer on the second insulating layer, wherein the second metal layer arranged in the non-light-emitting region is respectively connected with the first active layer and the light-shielding metal layer through via holes; the second metal layer arranged in the light emitting area is connected with the second active layer through a through hole.
Further, the step of preparing the second substrate further includes preparing a third insulating layer on the second insulating layer, where the third insulating layer covers the second metal layer, and a hole is formed in the third insulating layer, where the hole corresponds to the second metal layer in the non-light-emitting region; and preparing a layer of conductive material in the opening, and forming the connecting and leading wire after patterning.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a first substrate in an embodiment.
Fig. 2 is a schematic view of a second substrate in the embodiment.
Fig. 3 is a schematic view of a display panel in an embodiment.
In the drawings
10 a display panel; 101 a light emitting region;
102 a non-light emitting region; 110 a first substrate;
120 a second substrate; a 111 substrate base plate;
112 a light-shielding metal layer; 113 a buffer layer;
114 an active layer; 115 a first insulating layer;
116 a first metal layer; 117 a second insulating layer;
118 a second metal layer; 1181 a first metal segment;
1182 a second metal segment; 119 a third insulating layer;
1141 a first active layer; 1142 a second active layer;
1191 opening a hole; 130 connecting and leading the wire;
121 a cover plate; 122 a first electrode;
123 a light emitting layer; 124 retaining wall structures;
125 a second electrode;
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
Examples
In this embodiment, the display panel 10 of the present invention includes a light emitting region 101 and a non-light emitting region 102 surrounding the light emitting region 101.
The display panel 10 further includes a first substrate 110 and a second substrate 120 disposed opposite to each other.
As shown in fig. 1, the first substrate 110 is an array substrate, and includes a substrate 111, a light-shielding metal layer 112, a buffer layer 113, an active layer 114, a first insulating layer 115, a first metal layer 116, a second insulating layer 117, a second metal layer 118, and a third insulating layer 119.
The substrate 111 is a glass substrate, and the glass is transparent glass, has a certain bearing capacity, can bear various functional layers on the array substrate, and can effectively prevent external water vapor from invading the array substrate to cause the loss of the functions of the array substrate, thereby affecting the service life of the display panel 10.
The light-shielding metal layer 112 is disposed on the substrate 111, and specifically, the light-shielding metal layer 112 is disposed in the non-light-emitting region 102 and is configured to reflect light emitted toward the substrate 111, so as to prevent light leakage from one side of the substrate 111 of the first substrate 110, which may cause abnormal display.
The buffer layer 113 is disposed on the substrate 111 and covers the light-shielding metal layer 112, and the buffer layer 113 is made of Polyimide (PI) or other buffer materials, so as to perform a buffer protection function and prevent the light-shielding metal layer 112 from short-circuiting.
The active layer 114 is disposed on the buffer layer 113, specifically, the active layer 114 includes a first active layer 1141 and a second active layer 1142, wherein the first active layer 1141 corresponds to the light-shielding metal layer 112, and in order to achieve the best light-shielding effect of the light-shielding metal layer 112, generally, the area of the light-shielding metal layer 112 is larger than the area of the first active layer 1141, that is, the projection of the first active layer 1141 on the substrate 111 completely falls within the projection of the light-shielding metal layer 112 on the substrate 111. The second active layer 1142 is disposed in the light emitting region 101 for providing an electrical signal required by the display panel 10 to emit light.
The first insulating layer 115 is disposed on the active layer 114, specifically, the first insulating layer 115 is disposed on the first active layer 1141 and the second active layer 1142, and an orthographic projection of the first insulating layer 115 completely falls into an area of the first active layer 1141 and the second active layer 1142.
The first metal layer 116 is disposed on the first insulating layer 115, and the first insulating layer 115 is used to prevent the first metal layer 116 and the active layer 114 from being in direct contact with each other, thereby preventing a short circuit.
The second insulating layer 117 is disposed on the buffer layer 113 and covers the active layer 114, the first insulating layer 115, and the first metal layer 116, so as to prevent external moisture from invading and improve the service life of the first substrate 110.
The second metal layer 118 is disposed on the second insulating layer 117, and specifically, the second metal layer includes a first metal segment 1181 and a second metal segment 1182, the first metal segment 1181 is correspondingly disposed on the first active layer 1141 in the non-light emitting region 102, the first metal segment 1181 includes at least two pins, and the pins penetrate through the second insulating layer 117 and are connected to the first active layer 1141 to form a source-drain electrode loop.
The second metal segment 1182 is correspondingly disposed on the second active layer 1142 in the light emitting region 101, and the second metal segment 1182 includes at least two pins, one of the pins penetrates through the second insulating layer 117 and is connected to the second active layer 1142, and the other pin penetrates through the second insulating layer 117 and the buffer layer 113 and is connected to the light-shielding metal layer 112.
The third insulating layer 119 is disposed on the second insulating layer 117 and covers the second metal layer 118, so as to prevent the second metal layer 118 from being damaged by the intrusion of external water vapor, and the third insulating layer 119 covers the second metal layer 118 to prevent the second metal layer 118 from being in contact with other metal layers to cause a short circuit phenomenon.
An opening 1191 is formed in the third insulating layer 119 corresponding to the second metal layer 118, the second metal layer 118 is partially exposed in the opening 1191, and a connection trace 130 is disposed in the opening 1191, wherein the connection trace 130 is disposed on an inner wall of the opening 1191 and connected to the exposed second metal layer 118.
As shown in fig. 2, the second substrate 120 includes a cover plate 121, a first electrode 122, a light emitting layer 123, a retaining wall structure 124, and a second electrode 125.
The cover plate 121 is a glass substrate, and glass is transparent glass, so that the cover plate has a certain bearing capacity, can bear various functional layers on the array substrate, and can effectively prevent external water vapor from invading the display panel 10, thereby affecting the service life of the display panel 10.
The first electrode 122 is an anode, the first electrode 122 is directly prepared on the cover plate 121, and the cover plate 121 is a flat and smooth plate-shaped structure, so that the anode can have high integrity, and the uniformity of the film thickness is improved, thereby improving the luminous efficiency and the service life of the display panel 10.
Retaining wall structure 124 is located on first electrode 122 and correspond non-luminous zone 102, and is concrete, retaining wall structure 124 includes a plurality of retaining wall units, and is adjacent the space that the retaining wall unit encloses is promptly luminous zone 101, luminous layer 123 locates promptly in the space, luminous layer 123 includes a plurality of luminescence units, luminescence unit's colour includes red, blue and green, and each luminescence unit corresponds locates in the space that the retaining wall unit encloses, and adjacent luminescence unit's colour is different, is used for the guarantee display panel 10 can show colored picture.
The second electrode 125 is a cathode, and is disposed on the light emitting layer 123 and extends to the adjacent barrier wall units, and the first electrode 122 and the second electrode 125 have a voltage difference, so that the light emitting layer 123 can emit light, and the display panel 10 can normally display images.
As shown in fig. 3, the first substrate 110 and the second substrate 120 are assembled oppositely to form the display panel 10, and the routing trace 130 connects the second metal layer 118 of the first substrate 110 and the second electrode 125 of the second substrate 120.
In order to better explain the present invention, the embodiment further provides a method for manufacturing the display panel, including preparing a first substrate and a second substrate, and the method includes the following specific steps:
the second substrate is prepared by the following steps:
a cover plate is provided.
A first electrode is prepared on the cover plate.
And preparing a plurality of retaining walls which are uniformly distributed in the non-luminous area on the first electrode.
Preparing a light-emitting layer between the retaining walls, wherein the light-emitting layer comprises light-emitting units with at least two colors, and the colors of the adjacent light-emitting units are different.
And preparing a second electrode on the light-emitting unit, wherein the second electrode extends from the surface of the corresponding light-emitting unit to the blocking wall of the non-light-emitting area.
The first substrate is prepared by the following specific steps:
a base substrate is provided.
And preparing a layer of shading metal material on the substrate base plate, and patterning to form a shading metal layer.
And preparing a buffer layer on the second substrate, wherein the buffer layer covers the shading metal layer.
And preparing a layer of IGZO material on the buffer layer, and forming an active layer after patterning, wherein the active layer comprises a first active layer corresponding to the light-shielding metal layer and a second active layer arranged in the light-emitting region.
A first insulating layer is prepared on the active layer, and a first metal layer is prepared on the first insulating layer.
Preparing a second insulating layer on the buffer layer, wherein the second insulating layer covers the active layer, the first insulating layer and the first metal layer.
Preparing a second metal layer on the second insulating layer, wherein the second metal layer arranged in the non-light-emitting region is respectively connected with the first active layer and the light-shielding metal layer through via holes; the second metal layer arranged in the light emitting area is connected with the second active layer through a through hole.
And combining the first substrate with the second substrate, wherein the second electrode is connected with the corresponding lead wire.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A display panel comprising a light-emitting region and a non-light-emitting region surrounding the light-emitting region, an
A first substrate, one surface of which is provided with a lead wire;
the second substrate is covered and connected with one surface of the first substrate, which is provided with the lead wires;
the second substrate comprises
A cover plate;
the first electrode is arranged on one surface, facing the first substrate, of the cover plate and extends from the non-luminous area to the luminous area;
the luminous layer is arranged on one surface, far away from the cover plate, of the first electrode of the luminous zone;
and the second electrode extends from the non-luminous area to one surface of the luminous layer far away from the cover plate, and the second electrode of the non-luminous area is connected with the connecting wire.
2. The display panel according to claim 1, wherein the second substrate further comprises a barrier layer disposed on the first electrode, the barrier layer has a plurality of openings therein and a barrier structure surrounding the openings, the barrier structure is disposed in the non-light emitting region, the first electrode is exposed in the openings, the light emitting layer has a plurality of light emitting units therein, each light emitting unit is correspondingly disposed in the opening, and the second electrode extends from the surface of the corresponding light emitting unit to the barrier structure of the non-light emitting region.
3. The display panel of claim 2, wherein the first substrate further comprises a substrate base;
the shading metal layer is arranged in the non-luminous area on the substrate base plate;
the buffer layer is arranged on the second substrate and covers the shading metal layer;
an active layer disposed on the buffer layer;
the first insulating layer is arranged on the active layer, wherein the orthographic projection of the first insulating layer on the substrate completely falls into the orthographic projection of the active layer on the substrate;
the first metal layer is arranged on the first insulating layer;
and the second insulating layer is arranged on the buffer layer and covers the active layer, the first insulating layer and the first metal layer.
4. The display panel according to claim 3,
the active layer comprises
The first active layer is arranged in the non-luminous area and corresponds to the shading metal layer;
a second active layer disposed in the light emitting region;
a second metal layer disposed on the second insulating layer, the second metal layer including
And the first metal section is arranged in the non-luminous area and corresponds to the first active layer, wherein the first metal section comprises at least two pins, one pin penetrates through the second insulating layer and is connected with the first active layer, and the other pin penetrates through the second insulating layer and the buffer layer and is connected with the shading metal layer.
5. The display panel according to claim 4, further comprising
The third insulating layer is arranged on the second insulating layer and covers the second metal layer, and an opening is formed in the second insulating layer corresponding to the first metal section;
the connecting and leading wire is arranged on the inner wall of the opening and covers the area of the first metal section exposed out of the opening.
6. The display panel according to claim 1,
the lead wire corresponds to the second electrode arranged in the non-light-emitting area.
7. The display panel according to claim 1,
the material of the lead wire comprises at least one of indium zinc oxide, indium tin oxide, aluminum and silver.
8. A method for preparing a display panel, wherein the display panel comprises a luminous area and a non-luminous area surrounding the luminous area, the method is characterized by comprising the steps of preparing a first substrate and a second substrate, and the step of preparing the second substrate is as follows:
providing a cover plate;
preparing a first electrode on the cover plate;
preparing a retaining wall layer in a non-luminous area on the first electrode, and forming a through hole in the retaining wall layer corresponding to the luminous area;
preparing a light-emitting layer in the through hole in the barrier wall layer, wherein the light-emitting layer comprises light-emitting units with at least two colors, and the colors of the adjacent light-emitting units are different;
preparing a second electrode on the light emitting unit, wherein the second electrode extends from the surface of the corresponding light emitting unit to the adjacent barrier wall;
preparing a lead wire at a position of the first substrate corresponding to the second electrode;
and combining the first substrate with the second substrate, wherein the second electrode is connected with the corresponding lead wire.
9. The method for manufacturing a display panel according to claim 8,
the second substrate is prepared by the following specific steps:
providing a substrate base plate;
preparing a layer of shading metal material on the substrate base plate, and patterning to form a shading metal layer;
preparing a buffer layer on the second substrate, wherein the buffer layer covers the shading metal layer;
preparing a layer of IGZO material on the buffer layer, and forming an active layer after patterning, wherein the active layer comprises a first active layer corresponding to the light-shielding metal layer and a second active layer arranged in the light-emitting region;
preparing a first insulating layer on the active layer, and preparing a first metal layer on the first insulating layer;
preparing a second insulating layer on the buffer layer, wherein the second insulating layer covers the active layer, the first insulating layer and the first metal layer;
preparing a second metal layer on the second insulating layer, wherein the second metal layer arranged in the non-light-emitting region is respectively connected with the first active layer and the light-shielding metal layer through via holes;
the second metal layer arranged in the light emitting area is connected with the second active layer through a through hole.
10. The method according to claim 8, wherein the step of preparing the second substrate further comprises
Preparing a third insulating layer on the second insulating layer, wherein the third insulating layer covers the second metal layer, and an opening is formed in the third insulating layer and corresponds to the second metal layer in the non-light-emitting area;
and preparing a layer of conductive material in the opening, and forming the connecting and leading wire after patterning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089598.1A CN111146265A (en) | 2020-02-11 | 2020-02-11 | Display panel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089598.1A CN111146265A (en) | 2020-02-11 | 2020-02-11 | Display panel and preparation method thereof |
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| CN111146265A true CN111146265A (en) | 2020-05-12 |
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| CN202010089598.1A Pending CN111146265A (en) | 2020-02-11 | 2020-02-11 | Display panel and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080082233A (en) * | 2007-03-08 | 2008-09-11 | 엘지디스플레이 주식회사 | Organic light emitting display device and method for fabricating the same |
| US20100026167A1 (en) * | 2008-07-31 | 2010-02-04 | Lg Display Co., Ltd. | Organic light emitting display device |
| CN107680993A (en) * | 2017-10-23 | 2018-02-09 | 深圳市华星光电半导体显示技术有限公司 | Oled panel and preparation method thereof |
-
2020
- 2020-02-11 CN CN202010089598.1A patent/CN111146265A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080082233A (en) * | 2007-03-08 | 2008-09-11 | 엘지디스플레이 주식회사 | Organic light emitting display device and method for fabricating the same |
| US20100026167A1 (en) * | 2008-07-31 | 2010-02-04 | Lg Display Co., Ltd. | Organic light emitting display device |
| CN107680993A (en) * | 2017-10-23 | 2018-02-09 | 深圳市华星光电半导体显示技术有限公司 | Oled panel and preparation method thereof |
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