CN116916695A

CN116916695A - Display panel and display device

Info

Publication number: CN116916695A
Application number: CN202311134638.XA
Authority: CN
Inventors: 许传志; 胡思明; 王欢; 卢慧玲
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2023-10-20
Anticipated expiration: 2043-09-05
Also published as: CN116916695B

Abstract

The application discloses a display panel and a display device. The isolation structure is arranged on the substrate and surrounds the substrate to form a plurality of isolation openings so as to separate the light-emitting layers to form mutually disconnected light-emitting units, so that the crosstalk of carriers in the light-emitting layers is reduced, the display effect of the display panel is improved, the light-emitting units are prepared without adopting a precise mask plate, the development and the use of the precise mask plate can be reduced, and the preparation cost is reduced. That is, the first through hole is communicated with the light-transmitting opening, the number of film layers of the display panel at the first through hole and the light-transmitting opening is reduced, the transmittance of the display panel at the first through hole and the light-transmitting opening is improved, and therefore the usability of the OLED display product is improved.

Description

Display panel and display device

Technical Field

The application relates to the field of display, in particular to a display panel and a display device.

Background

Organic light emitting diodes (Organic Light Emitting Display, OLEDs) and flat display devices based on the technologies of light emitting diodes (Light Emitting Diode, LEDs) are widely used in various consumer electronic products such as mobile phones, televisions, notebook computers, and desktop computers, and become the mainstream of display devices, because of their advantages such as high image quality, power saving, thin body, and wide application range.

However, the service performance of the current OLED display product needs to be improved.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device, which aim to improve the service performance of OLED display products.

An embodiment of a first aspect of the present application provides a display panel, including a substrate, where a light-transmitting opening is formed on the substrate; the isolation structure is positioned on one side of the substrate, the isolation structure is enclosed to form an isolation opening and a first through hole, the first through hole is communicated with the light transmission opening, and the light transmission opening is orthographic projected on the substrate in the orthographic projection of the first through hole; and the light-emitting layer is positioned on one side of the substrate and comprises light-emitting units positioned in the isolation openings.

According to an embodiment of the first aspect of the present application, the substrate comprises: a substrate; the array layer is positioned on one side of the substrate close to the light-emitting layer, and the light-transmitting opening comprises a second through hole penetrating through the array layer.

According to any one of the foregoing embodiments of the first aspect of the present application, the isolation structure includes a first conductive layer, and the display panel further includes: the first electrode layer is positioned on one side of the light-emitting layer, which is away from the substrate, and comprises a first electrode positioned at the isolation opening, and the first electrode is electrically connected with the first conductive layer.

According to any one of the preceding embodiments of the first aspect of the present application, the substrate comprises: a second electrode layer including a second electrode provided corresponding to each light emitting unit; the insulating layer comprises a covering part and a first opening formed by enclosing the covering part, the covering part covers the side surface of the second electrode, part of the area of the second electrode is exposed out of the first opening, and the first opening is communicated with the isolation opening.

According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure is located on the covering portion; or the covering part is provided with a containing opening, and the isolation structure is positioned in the containing opening; or, the number of the covering parts is multiple, one covering part covers the side edge of one second electrode and is annularly arranged around the side edge of the second electrode, and the isolation structure is positioned in the interval between the adjacent covering parts.

According to any one of the foregoing embodiments of the first aspect of the present application, the isolation structure includes a covering portion extending toward the first through hole, the covering portion covering an inner wall surface of the covering portion toward the light-transmitting opening.

According to any of the foregoing embodiments of the first aspect of the present application, the light-transmitting opening includes a third through hole penetrating the insulating layer, and the first through hole and the third through hole communicate.

According to any one of the foregoing embodiments of the first aspect of the present application, a display panel includes: the first sub-layer is positioned at one side of the light emitting unit, which is away from the substrate; the second sub-layer is positioned on one side of the first sub-layer, which is away from the substrate; the third sub-layer is positioned on one side of the second sub-layer, which is away from the substrate, and covers the inner wall surface of the covering part, which faces the light-transmitting opening.

According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further includes: and a transparent filling part for filling the first through hole.

An embodiment of a second aspect of the present application provides a display device including the display panel of any one of the above embodiments.

According to the display panel provided by the embodiment of the application, the display panel comprises a substrate, an isolation structure and a light-emitting layer. The isolation structure is arranged on the substrate and surrounds the substrate to form a plurality of isolation openings so as to separate the light-emitting layers to form mutually disconnected light-emitting units, so that the crosstalk of carriers in the light-emitting layers is reduced, the display effect of the display panel is improved, the light-emitting units are prepared without adopting a precise mask plate, the development and the use of the precise mask plate can be reduced, and the preparation cost is reduced. The first through hole and the printing opacity opening intercommunication set up, and printing opacity opening is in first through hole at base plate orthographic projection within base plate orthographic projection, reduces the rete quantity of display panel in first through hole and printing opacity opening part, improves display panel in first through hole and printing opacity opening part transmissivity to promote OLED and show the performance of product.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.

Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic top view of a display panel according to an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of a display panel in another embodiment;

FIG. 4 is a partial cross-sectional view of a display panel in yet another embodiment;

FIG. 5 is a partial cross-sectional view of a display panel in yet another embodiment;

FIG. 6 is a partial cross-sectional view of a display panel in yet another embodiment;

FIG. 7 is a partial cross-sectional view of a display panel in yet another embodiment;

FIG. 8 is a partial cross-sectional view of a display panel in yet another embodiment;

fig. 9 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application.

Reference numerals illustrate:

10. a display panel;

100. a substrate; 110. A light-transmitting opening;

200. an array layer; 210. A second through hole;

300. an isolation structure; 301. a first conductive layer; 302. a second layer; 303. a third layer; 304. a cover part; 310. an isolation opening; 320. a first through hole;

400. a light emitting layer; 410. a light emitting unit;

500. a first electrode layer; 510. a first electrode;

600. an insulating layer; 610. a covering portion; 620. a first opening; 630. a third through hole; 640. a receiving opening;

700. an encapsulation layer; 710. a first sub-layer; 720. a second sub-layer; 730. a third sub-layer; 740. a fourth sub-layer;

800. a transparent filling part;

900. a second electrode layer; 910. a second electrode;

1000. a substrate.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

Embodiments of the present application provide a display panel and a display device, and embodiments of the display panel, the display device, and a method for manufacturing the display panel will be described below with reference to the accompanying drawings.

Embodiments of the present application provide a display panel, which may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the application; fig. 2 is a schematic top view of a display panel according to an embodiment of the application.

As shown in fig. 1 and 2, a first aspect of the present application provides a display panel 10, the display panel 10 including a substrate 100; the substrate 100 is provided with a light-transmitting opening 110; the isolation structure 300 is positioned on one side of the substrate 100, the isolation structure 300 encloses to form an isolation opening 310 and a first through hole 320, the light-transmitting opening 110 is communicated with the first through hole 320, and the light-transmitting opening 110 is orthographically projected on the substrate 100 in the orthographic projection of the first through hole 320 on the substrate 100; the light emitting layer 400 is positioned at one side of the substrate 100, and the light emitting layer 400 includes the light emitting unit 410 positioned at the isolation opening 310.

According to the display panel 10 of the embodiment of the present application, the display panel 10 includes the substrate 100, the isolation structure 300, and the light emitting layer 400. The isolation structure 300 is disposed on the substrate 100 and encloses to form a plurality of isolation openings 310, so as to partition the light-emitting layer 400 to form the light-emitting units 410 that are disconnected from each other, thereby reducing crosstalk of carriers in the light-emitting layer 400, improving display effect of the display panel 10, and manufacturing the light-emitting units 410 without using a precise mask, so that development and use of the precise mask can be reduced, and manufacturing cost can be reduced. The first through holes 320 formed by enclosing the light-transmitting opening 110 of the substrate 100 and the isolation structure 300 are communicated, so that the number of film layers of the display panel 10 at the positions of the light-transmitting opening 110 and the first through holes 320 is reduced, the transmittance of the display panel 10 at the positions of the light-transmitting opening 110 and the first through holes 320 is improved, and the usability of OLED display products is improved.

The substrate 100 may be provided in various ways, and the substrate 100 may include, for example, a substrate and a protective film provided on the substrate. Or the substrate 100 includes a buffer layer and a support plate or the like on a side of the substrate facing away from the protective film.

Optionally, the shape of the first through hole 320 on the substrate 100 includes a circle or a square, so that the shape of the first through hole 320 is relatively regular, so that the mask structure for evaporating the isolation structure 300 is simple, the preparation of the mask is convenient, and the development difficulty is reduced.

Optionally, the display panel 10 is provided with a plurality of light-transmitting openings 110, so as to improve the overall transmittance of the display panel 10, thereby improving the usability of the display panel 10.

Referring to fig. 3, fig. 3 is a partial cross-sectional view of a display panel according to another embodiment.

As shown in fig. 3, optionally, the substrate 100 further includes a substrate 1000 and an array layer 200, where the array layer 200 is located on a side of the substrate 1000 near the light emitting layer 400, and the light-transmitting opening 110 includes a second through hole 210 penetrating through the array layer 200, so that the transmittance of the display panel 10 at the light-transmitting opening 110 can be improved.

Optionally, the second through hole 210 is orthographic projected on the substrate 100 within the orthographic projection of the first through hole 320 on the substrate 100, where the second through hole 210 is fully communicated with the first through hole 320, so as to increase the overlapping area of the orthographic projection of the second through hole 210 on the substrate 100 and the orthographic projection of the first through hole 320 on the substrate 100, i.e. increase the area of the position where the transmittance of the display panel 10 is higher, thereby improving the overall transmittance of the display panel 10.

In some alternative embodiments, the isolation structure 300 includes the first conductive layer 301, the display panel 10 further includes the first electrode layer 500, the first electrode layer 500 is located on a side of the light emitting layer 400 facing away from the substrate 100, the first electrode layer 500 includes the first electrode 510 located at the isolation opening 310, and the first electrode 510 is electrically connected to the first conductive layer 301.

In these alternative embodiments, the isolation structure 300 partitions the first electrode layer 500 to form first electrodes 510 spaced apart from each other, and the first electrodes 510 spaced apart from each other are electrically connected to form a whole electrode through the first conductive layer 301, so as to ensure normal light emission of the light emitting unit 410.

In some alternative embodiments, the front projection of each light emitting unit 410 on the substrate 100 is located within the front projection of each first electrode 510 on the substrate 100.

In these alternative embodiments, the front projection of the light emitting unit 410 on the substrate 100 is located within the front projection of the first electrode 510 on the substrate 100, that is, the first electrode 510 is disposed to cover the light emitting unit 410, so as to serve as an electrode of the light emitting unit 410, ensure the normal light emission of the light emitting unit 410, and improve the display effect of the display panel 10.

Optionally, the light emitting units 410 are spaced from the first conductive layer 301, and the light emitting layers 400 and the first conductive layer 301 are spaced from each other, that is, the light emitting units 410 are spaced from each other, so that crosstalk of carriers between the light emitting units 410 is reduced, and cross-color problem of the light emitting units 410 is improved.

In some alternative embodiments, isolation structure 300 further includes a second layer 302 on a side of first conductive layer 301 facing away from substrate 100, the orthographic projection of first conductive layer 301 on substrate 100 being within the orthographic projection of second layer 302 on substrate 100.

In these alternative embodiments, the first conductive layer 301 and the second layer 302 are arranged to form the isolation structure 300, the first conductive layer 301 arranged close to the substrate 100 is located within the front projection of the second layer 302 on the substrate 100, the area of the second layer 302 is larger than the area of the first conductive layer 301, the second layer 302 covers the surface of the first conductive layer 301 close to the second layer 302, and the first conductive layer 301 is recessed towards a direction away from the isolation opening 310 with respect to the second layer 302. When the light emitting layer 400 is prepared, the light emitting layer 400 generates a larger drop at the edge of the isolation structure 300, and the first conductive layer 301 is concavely disposed with respect to the second layer 302, the light emitting layer 400 is difficult to connect at the edge of the isolation structure 300, so that a break occurs, and the light emitting layer 400 breaks to form the light emitting units 410 that are disconnected from each other.

In some alternative embodiments, the second layer 302 includes a conductive material or an insulating material.

In these alternative embodiments, the second layer 302 comprises a conductive material, for example, the second layer 302 comprises a non-metallic conductive material or a metallic conductive material. When the second layer 302 is made of a non-metal conductive material or an insulating material, the second layer 302 is difficult to be etched in the process of wet etching the first conductive layer 301 by using the etching solution, so that the first conductive layer 301 is more easily arranged concavely relative to the second layer 302.

In some alternative embodiments, the second layer 302 comprises a metallic material, and the materials of the first conductive layer 301 and the second layer 302 are different.

In these alternative embodiments, when the first conductive layer 301 and the second layer 302 are both made of metal materials, the first conductive layer 301 may be wet etched using an etching solution, and the etching rate of the second layer 302 may be made smaller than that of the first conductive layer 301 by setting the etching solution. Because the etching rate of the first conductive layer 301 is relatively high, when the etching solution is used for wet etching, even if the second layer 302 is subjected to certain etching, the first conductive layer 301 etches faster, so that the first conductive layer 301 is concavely arranged relative to the second layer 302.

Referring to fig. 4, fig. 4 is a partial cross-sectional view of a display panel according to another embodiment.

In some alternative embodiments, as shown in fig. 4, the isolation structure 300 further includes a third layer 303 located on a side of the first conductive layer 301 facing the substrate 100, and the orthographic projection of the first conductive layer 301 on the substrate 100 is located within the orthographic projection of the third layer 303 on the substrate 100.

In these alternative embodiments, since the first conductive layer 301 is etched at a faster etch rate than the second layer 302 during etching to obtain the first conductive layer 301 disposed concave, the third layer 303 is etched at a faster etch rate to form the first conductive layer 301 concave. Since the etching rate of the first conductive layer 301 is faster, waste generated by etching is more likely to enter other positions of the display panel 10, thereby causing adverse effects. After the third layer 303 is arranged, the first conductive layer 301 can be well attached to the third layer 303, and generated etching waste falls on the third layer 303, so that cleaning is facilitated.

In some alternative embodiments, the substrate 100 further includes a second electrode layer 900 and an insulating layer 600, the second electrode layer 900 including a second electrode 910 disposed corresponding to each light emitting unit 410; the insulating layer 600 includes a cover portion 610 and a first opening 620 surrounded by the cover portion 610, the cover portion 610 covering a side surface of the second electrode 910, a partial region of the second electrode 910 being exposed by the first opening 620, the first opening 620 communicating with the isolation opening 310.

In these alternative embodiments, the second electrode 910 is exposed by the first opening 620. One of the second electrode 910 and the first electrode 510 serves as an anode of the light emitting unit 410, and the other serves as a cathode of the light emitting unit 410. The embodiment of the present application uses the second electrode 910 as the anode of the light emitting unit 410, and the first electrode 510 is illustrated as the cathode of the light emitting unit 410. The cover portion 610 of the insulating layer 600 is surrounded to form a first opening 620 to provide the light emitting unit 410, so that normal light emission of the light emitting unit 410 is achieved. And the cover portion 610 defines a disposition area of each light emitting unit 410, reducing cross color failure between each light emitting unit 410. The cover portion 610 covers the side surface of the second electrode 910, so that the cover portion 610 performs insulation taping on the side surface of the second electrode 910, so as to reduce intrusion of moisture through the cover portion 610 and improve the service life of the display panel 10.

In some alternative embodiments, as shown in fig. 3, the isolation structure 300 is located on the cover portion 610.

In these alternative embodiments, the isolation structure 300 is disposed on the cover portion 610, and the isolation structure 300 has a larger height drop than the first opening 620. When the light-emitting layer 400 is prepared, the light-emitting layer 400 is more easily broken at the position of the isolation structure 300 due to the larger drop height, so that the preparation difficulty of the light-emitting layer 400 is reduced.

As shown in fig. 4, optionally, the cover portion 610 is provided with a receiving opening 640, the isolation structure 300 is located in the receiving opening 640, the isolation structure 300 is disposed in the receiving opening 640 on the cover portion 610, and during the preparation process, the preparation step of the isolation structure 300 prepares the second electrode 910 on the substrate 100 before the preparation of the second electrode 910, that is, after the preparation of the isolation structure 300 on the substrate 100 is completed, so as to reduce the influence of the preparation of the isolation structure 300 on the second electrode 910, and ensure that the second electrode 910 is not damaged.

Optionally, the number of the shielding portions 610 is plural, one shielding portion 610 covers a side edge of one second electrode 920 and is annularly disposed around the side edge of the second electrode 920, the isolation structure 300 is located in a space between adjacent shielding portions 610, the isolation structure 300 is disposed in the space between adjacent shielding portions 610, and during the preparation process, the preparation step of the isolation structure 300 prepares the second electrode 910 on the substrate 100 before the preparation of the second electrode 910, that is, after the preparation of the isolation structure 300 on the substrate 100 is completed, so as to reduce the influence of the preparation of the isolation structure 300 on the second electrode 910 and ensure that the second electrode 910 is not damaged. And the plurality of cover portions 610 are arranged at intervals, so that water vapor is difficult to extend between the cover portions 610 to invade, and the service life of the display panel 10 is prolonged.

In some alternative embodiments, the insulating layer 600 includes a pixel defining layer, the insulating layer 600 is multiplexed as a pixel defining layer, the cover portion 610 is multiplexed as a pixel defining portion, the first opening 620 is multiplexed as a pixel opening, and the isolation structure 300 is located on a side of the pixel defining portion facing away from the substrate 100.

In these alternative embodiments, the isolation structure 300 is disposed on the pixel defining portion, and the isolation structure 300 has a larger height drop corresponding to the pixel opening. When the light-emitting layer 400 is prepared, the light-emitting layer 400 is more easily broken at the position of the isolation structure 300 due to the larger drop height, so that the preparation difficulty of the light-emitting layer 400 is reduced.

Optionally, the insulating layer 600 includes an organic material and/or an inorganic material, and when the insulating layer 600 includes an inorganic material, the inorganic material has better compactness and higher packaging performance.

Referring to fig. 5, fig. 5 is a partial cross-sectional view of a display panel according to another embodiment.

As shown in fig. 5, in some alternative embodiments, the isolation structure 300 includes a cover portion 304 extending toward the first through hole 320, the cover portion 304 covering an inner wall surface of the cover portion 610 toward the light-transmitting opening 110.

In these alternative embodiments, the isolation structure 300 extends towards the first through hole 320 to form the cover portion 304, and the cover portion 304 covers the inner wall surface of the cover portion towards the light-transmitting opening 110, so as to implement packaging of the cover portion by the cover portion 304, so that moisture is difficult to invade through the cover portion 610, so as to improve the service life of the display panel 10.

Referring to fig. 6, fig. 6 is a partial cross-sectional view of a display panel according to another embodiment.

In some alternative embodiments, as shown in fig. 6, the light transmissive opening includes a third via 630 extending through the insulating layer, the first via and the third via 630 communicating.

In these alternative embodiments, the covering portion 610 encloses to form a third through hole 630, the third through hole 630 communicates with the first through hole 320, and the orthographic projection of the first through hole 320 on the substrate 100 and the orthographic projection of the third through hole 630 on the substrate 100 at least partially overlap to form an overlapping region, where the number of layers of the display panel 10 is reduced, and the transmittance of the display panel 10 at the overlapping region is improved, so as to improve the usability of the OLED display product.

In some alternative embodiments, the orthographic projection of the third via 630 on the substrate 100 is located within the orthographic projection of the first via 320 on the substrate 100.

In these alternative embodiments, the third through hole 630 is completely communicated with the first through hole 320, so as to increase the area of the overlapping area between the front projection of the first through hole 320 on the substrate 100 and the front projection of the third through hole 630 on the substrate 100, i.e. increase the area of the position where the transmittance of the display panel 10 is higher, thereby improving the overall transmittance of the display panel 10.

With continued reference to fig. 6, in some alternative embodiments, the display panel 10 further includes an encapsulation layer 700, where the encapsulation layer 700 is located on a side of the first electrode layer 500 facing away from the substrate 100.

In these alternative embodiments, the encapsulation layer 700 is disposed on the side of the first electrode layer 500 away from the substrate 100, so as to encapsulate the first electrode layer 500 and the light emitting layer 400, thereby reducing the possibility of intrusion of water and oxygen and improving the service life of the display panel 10.

In some alternative embodiments, the encapsulation layer 700 includes a first sub-layer 710, the first sub-layer 710 being located at a side of the light emitting unit 410 facing away from the substrate 100.

In these alternative embodiments, the first sub-layer 710 is disposed on a side of the first electrode layer 500 facing away from the substrate 100, so as to encapsulate the first electrode layer 500 and the light emitting layer 400, thereby reducing the possibility of intrusion of water and oxygen and improving the service life of the display panel 10.

Optionally, the first sub-layer 710 includes an inorganic material, which has good compactness and good barrier property to water vapor and oxygen.

In some alternative embodiments, the encapsulation layer 700 further comprises a second sub-layer 720, the second sub-layer 720 being located on a side of the first sub-layer 710 facing away from the substrate 100.

In these alternative embodiments, the package layer 700 includes a first sub-layer 710 and a second sub-layer 720, and the package performance of the package layer 700 is further improved by performing multi-layer package using the first sub-layer 710 and the second sub-layer 720.

Optionally, the second sub-layer 720 includes an organic material, and the second sub-layer 720 is encapsulated by using the organic material, so as to further improve the encapsulation performance of the encapsulation layer 700.

Optionally, the front projection of the second sub-layer 720 on the substrate 100 and the light-transmitting opening 110 are staggered, that is, the portion of the second sub-layer 720 in the light-transmitting opening 110 is removed, so as to reduce the film thickness of the display panel 10 in the light-transmitting opening 110, thereby improving the transmittance of the display panel 10 in the light-transmitting opening 110.

Optionally, the packaging layer 700 further includes a third sub-layer 730, where the third sub-layer 730 is located on a side of the second sub-layer 720 away from the substrate 100, and the packaging layer 700 uses three layers of packaging, so that the packaging performance is better, and the possibility of water and oxygen invasion is reduced.

Optionally, the third sub-layer 730 includes an inorganic material, and the first sub-layer 710, the second sub-layer 720, and the third sub-layer 730 are respectively encapsulated by using an inorganic material, an organic material, and an inorganic material to form a TFE (Thin Film Encapsulation, TFE) thin film encapsulation structure, so as to further improve the encapsulation performance of the encapsulation layer 700.

Referring to fig. 7, fig. 7 is a partial cross-sectional view of a display panel according to another embodiment.

In some alternative embodiments, as shown in fig. 7, the third sub-layer 730 covers an inner wall surface of the cover portion 610 facing the light-transmitting opening 110.

In these alternative embodiments, the third sub-layer 730 covers the inner wall surface of the cover portion 610 facing the light-transmitting opening 110 to implement packaging of the cover portion 610 by the third sub-layer 730, so that moisture is difficult to invade through the cover portion 610, so as to improve the service life of the display panel 10.

In some alternative embodiments, the display panel 10 further includes a filter layer, where the filter layer is located on a side of the light emitting layer 400 facing away from the substrate, and the filter layer includes filter portions spaced from each other and a black matrix disposed between adjacent filter portions, where a fourth through hole is formed on the black matrix, and a front projection of the fourth through hole on the substrate at least partially overlaps the light-transmitting opening.

In these alternative embodiments, the filter portion of the filter layer is disposed corresponding to the light emitting unit 410, so that the light emitted from the light emitting unit 410 passes through the filter portion and is filtered by the filter portion, so that the light passing through the filter portion emits light having the same color as the filter portion, and the display effect of the display panel 10 is improved. A black matrix is arranged between the adjacent filtering parts so as to solve the problem of color mixing between the adjacent filtering parts. The black matrix is provided with a fourth through hole, and the orthographic projection of the fourth through hole on the substrate is at least partially overlapped with the light-transmitting opening 110, that is, the fourth through hole is communicated with the light-transmitting opening 110, so that the transmittance of the display panel 10 at the communication position of the fourth through hole and the light-transmitting opening 110 is improved.

Optionally, the isolation structure 300 has a grid shape in front projection of the substrate 100 and has grid crossing positions, and the first through holes 320 are disposed at the grid crossing positions. At the grid crossing position, the isolation structure 300 has a larger area in the orthographic projection of the substrate 100, so that the preparation of the first through holes 320 is facilitated, and the larger first through holes 320 can be prepared at the grid crossing position, so that the area of the high-transmittance area of the display panel 10 is improved.

Alternatively, the isolation structure 300 surrounding the first through hole 320 has a ring structure, so that the area of the first through hole 320 is sufficiently increased, and the area of the high-transmittance area of the display panel 10 is further increased. Referring to fig. 8, fig. 8 is a partial cross-sectional view of a display panel according to another embodiment.

As shown in fig. 8, in some alternative embodiments, the display panel 10 further includes a transparent filling portion 800, and the transparent filling portion 800 fills the light-transmitting opening 110.

In these alternative embodiments, the transparent filling portion 800 fills the light-transmitting opening 110, so that the light-transmitting opening 110 is relatively flat, so that other film layers can be prepared later. The transparent filling part 800 includes a transparent material, and in the case of flattening the display panel 10 at the light-transmitting opening 110, it is also possible to ensure that the display panel 10 has a high transmittance at the light-transmitting opening 110, improving the usability of the display panel 10.

Optionally, the transparent filling portion 800 fills the third through hole 630, and the transparent filling portion 800 fills the third through hole 630, so that the third through hole 630 is flattened, so that other film layers can be prepared later.

Optionally, the transparent filling portion 800 is provided to fill the first through hole 320, and the transparent filling portion 800 fills the first through hole 320, so that the first through hole 320 is flattened, so that other film layers can be prepared later.

Optionally, the transparent filling portion 800 and the second sub-layer 720 are formed of the same material, and when the covering portion 610 is covered by the covering portion 304 and then the second sub-layer 720 is prepared, a portion of the second sub-layer 720 falls into the light-transmitting opening 110 to fill the light-transmitting opening 110, so as to form the transparent filling portion 800.

Alternatively, the light emitting layer 400 includes an Electron Injection Layer (EIL), an Electron Transport Layer (ETL), a light emitting material layer, a Hole Injection Layer (HIL), and a Hole Transport Layer (HTL).

The structural design in the present embodiment can be applied to other display panels 10, and specifically can be selected according to practical situations, which is not limited in the present application.

Embodiments of the second aspect of the present application also provide a display device comprising the display panel 10 of any of the embodiments of the first aspect. Since the display device according to the second embodiment of the present application includes the display panel 10 according to any one of the first embodiment, the display device according to the second embodiment of the present application has the advantages of the display panel 10 according to any one of the first embodiment, and is not described herein.

The display device in the embodiment of the application comprises, but is not limited to, a mobile phone, a personal digital assistant (Personal Digital Assistant, abbreviated as PDA), a tablet computer, an electronic book, a television, an access control, a smart phone, a console and other devices with display functions.

An embodiment of the third aspect of the present application further provides a method for manufacturing a display panel 10, where the display panel 10 may be the display panel 10 provided in any one of the embodiments of the first aspect, please refer to fig. 1 to 8 together, and refer to fig. 9, and fig. 9 is a flow chart of a method for manufacturing a display panel provided in the embodiment of the present application. The preparation method comprises the following steps:

step S01: preparing a substrate, wherein a light-transmitting opening is formed in the substrate.

Step S02: and preparing an isolation structure on the substrate, wherein the isolation structure is enclosed to form an isolation opening and a first through hole, and the light transmission opening is communicated with the first through hole.

Step S03: a light emitting layer is prepared on the substrate, the light emitting layer including light emitting cells located at the isolation openings.

According to the manufacturing method of the embodiment of the third aspect of the present application, the substrate 100 is manufactured through step S01, and the substrate 100 includes the light-transmitting opening 110. Isolation structures 300 are then prepared, via step S02. Finally, the light-emitting layer 400 is prepared in step S03, the isolation structure 300 is disposed on the substrate 100 and surrounds the light-emitting layer 400 to form a plurality of isolation openings 310, so that the light-emitting layer 400 is isolated to form the light-emitting units 410 which are disconnected from each other, thereby reducing the crosstalk of carriers in the light-emitting layer 400, improving the display effect of the display panel 10, and the light-emitting units 410 are prepared without adopting a precise mask plate, so that the development and use of the precise mask plate can be reduced, and the preparation cost can be reduced. The orthographic projection of the light-transmitting opening 110 on the substrate 100 is located within the orthographic projection of the first through hole 320 on the substrate 100, that is, the light-transmitting opening 110 of the substrate 100 and the first through hole 320 formed by enclosing the isolation structure 300 are communicated, so that the number of film layers of the display panel 10 at the positions of the light-transmitting opening 110 and the first through hole 320 is reduced, the transmittance of the display panel 10 at the positions of the light-transmitting opening 110 and the first through hole 320 is improved, and the service performance of the OLED display product is improved.

In some alternative embodiments, after step S03, the method further comprises:

a transparent material layer is prepared on one side of the light emitting layer 400 away from the substrate 100, and the transparent material layer is patterned to obtain a transparent filling portion 800, where the transparent filling portion 800 is filled in the light-transmitting opening 110.

These embodiments are not exhaustive or to limit the application to the precise embodiments disclosed, and according to the application described above. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A display panel, the display panel further comprising:

the substrate is provided with a light-transmitting opening;

the isolation structure is positioned on one side of the substrate, an isolation opening and a first through hole are formed by enclosing the isolation structure, the first through hole is communicated with the light transmission opening, and the light transmission opening is orthographically projected on the substrate and is orthographically projected in the substrate;

and the light-emitting layer is positioned on one side of the substrate and comprises a light-emitting unit positioned at the isolation opening.

2. The display panel of claim 1, wherein the substrate comprises:

a substrate;

and the array layer is positioned on one side of the substrate close to the light-emitting layer, and the light-transmitting opening comprises a second through hole penetrating through the array layer.

3. The display panel of claim 1, wherein the isolation structure comprises a first conductive layer, the display panel further comprising:

the first electrode layer is positioned on one side of the light-emitting layer, which is away from the substrate, and comprises a first electrode positioned at the isolation opening, and the first electrode is electrically connected with the first conductive layer.

4. The display panel of claim 1, wherein the substrate comprises:

a second electrode layer including a second electrode provided corresponding to each of the light emitting units;

the insulating layer comprises a covering part and a first opening formed by encircling the covering part, the covering part covers the side surface of the second electrode, a part area of the second electrode is exposed out of the first opening, and the first opening is communicated with the isolation opening.

5. The display panel of claim 4, wherein the isolation structure is located on the cover portion; or alternatively, the process may be performed,

the shielding part is provided with an accommodating opening, and the isolation structure is positioned in the accommodating opening; or alternatively, the process may be performed,

the number of the covering parts is multiple, one covering part covers one side edge of the second electrode and is arranged annularly around the side edge of the second electrode, and the isolation structure is located in the interval between the adjacent covering parts.

6. The display panel according to claim 4, wherein the isolation structure includes a covering portion extending toward the first through hole, the covering portion covering an inner wall surface of the covering portion toward the light-transmitting opening.

7. The display panel of claim 4, wherein the light transmissive opening includes a third via through the insulating layer, the first via and the third via communicating.

8. The display panel of claim 4, further comprising:

the first sub-layer is positioned on one side of the light emitting unit, which is away from the substrate;

the second sub-layer is positioned on one side of the first sub-layer, which is away from the substrate;

the third sub-layer is positioned on one side of the second sub-layer, which is away from the substrate;

the third sub-layer covers the inner wall surface of the covering part facing the light-transmitting opening.

9. The display panel of claim 1, further comprising:

and the transparent filling part is used for filling the light-transmitting opening.

10. A display device comprising the display panel of any one of claims 1-9.