CN111525043A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111525043A CN111525043A CN202010342430.7A CN202010342430A CN111525043A CN 111525043 A CN111525043 A CN 111525043A CN 202010342430 A CN202010342430 A CN 202010342430A CN 111525043 A CN111525043 A CN 111525043A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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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
Abstract
The invention discloses a display panel and a display device, which aim to solve the problems that bubbles are easy to generate at the position of a through hole when the display panel in the prior art is used for manufacturing the through hole, and further, poor roundness and dizzy grains are easy to generate at the position of the through hole. The display panel, in the outer side of the isolation stage, the first film layer having a first overlapping portion overlapping the second film layer of the first side, and a first extension portion extending from the first overlapping portion beyond the second film layer; in the inner side of the isolation stage, the first film ply has a second overlap only on the second inner half side that overlaps the second film ply of the second side, and a second outer extent extending from the second overlap beyond the second film ply.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Flat panel displays (F1at panel 1 Disp1ay, FPD) have become the mainstream products in the market, and the types of flat panel displays are increasing, such as Liquid crystal displays (Liquid crystal displays 1 Disp1ay, LCD), Organic Light Emitting Diode (OLED) displays, plasma Display panels (P1asma Disp1 aypanel 1, PDP), and Field Emission Displays (FED).
Organic Light Emitting Diode (OLED) displays are currently developed more rapidly than other display devices, and the full-screen of the OLED devices is becoming the next mainstream product. Such a full screen generally requires the fabrication of a through hole through the full screen for the placement of components such as a camera.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for solving the problems that bubbles are easy to generate at the position of a through hole when the display panel in the prior art is used for manufacturing the through hole, and further, poor roundness and dizzy grains are easy to generate at the position of the through hole.
The embodiment of the invention provides a display panel, which is provided with a through hole penetrating through the display panel;
the display panel includes: a substrate base, a hollow isolation stage surrounding the through hole on one side of the substrate base, the isolation stage having an inner side facing the through hole and an outer side facing away from the through hole, the inner side including a first inner half on a first radial first side and a second inner half on a first radial second side, the outer side including a first outer half on the first side and a second outer half on the second side, the first radial being a cross-sectional diameter of the isolation stage;
the isolation stage comprises a first film layer and a second film layer located on the side of the first film layer facing the substrate base plate, wherein in the outer side of the isolation stage, the first film layer only has a first overlapping portion on the first outer half side, which overlaps with the second film layer on the first side, and a first extension portion extending from the first overlapping portion beyond the second film layer; in the inner side of the isolation stage, the first film ply has a second overlap only on the second inner half side that overlaps the second film ply of the second side, and a second outer extent extending from the second overlap beyond the second film ply.
In a possible embodiment, in the outer side of the isolation stage, the side of the first film layer on the second outer half is at the same slope as the side of the second film layer on the second outer half;
in the inner side of the isolation stage, a side of the first film ply on the first inner half side is on a same slope as a side of the second film ply on the first inner half side.
In one possible embodiment, the isolation stage further comprises a third film layer on a side of the second film layer facing the substrate base plate;
on the first outer half side, an included angle between the surface of the first extension portion facing the second film layer and the side face of the second film layer is an acute angle, and an included angle between the surface of the third film layer facing the second film layer and the side face of the second film layer is an obtuse angle;
the second is half the side in the second, the second epitaxial portion towards the surface of second rete with the contained angle of the side of second rete is the acute angle, the facing of third rete the surface of second rete with the contained angle of the side of second rete is the obtuse angle.
In a possible embodiment, there is an overlap region between the first outer half side and the second inner half side in a direction perpendicular to the first radial direction.
In a possible embodiment, the length of the overlap region in a direction perpendicular to the first radial direction is 1um to 500 um.
In a possible embodiment, the isolation table has a cutout in the overlap region connecting the first outer half side and the second inner half side.
In a possible embodiment, the hollow portion has a hollow side located at the second side of the first radial direction, and an extension length of the first film layer at the hollow side is greater than an extension length of the second film layer at the hollow side.
In one possible embodiment, the isolation stage further comprises a third film layer on a side of the second film layer facing the substrate base plate.
In a possible embodiment, the display panel further comprises a passivation layer on a side of the isolation mesa facing away from the substrate base plate, the passivation layer covering an orthographic projection of the isolation mesa on the substrate base plate, wherein the passivation layer has corresponding recess structures on the first outer half side and the second inner half side.
In a possible implementation manner, the display panel further includes a source drain layer, and the isolation mesa and the source drain layer are located in the same layer.
The embodiment of the invention also provides a display device which comprises the display panel provided by the embodiment of the invention.
The embodiment of the invention has the following beneficial effects: in the display panel provided in the embodiment of the present invention, in the outer side of the isolation stage, the first film layer has a first overlapping portion overlapping with the second film layer on the first side only on the first outer half side, and a first outer extension portion extending from the first overlapping portion and exceeding the second film layer; in the inner side of the separating table, the first film layer has a second overlapping portion overlapping with the second film layer on the second side only on the second inner half side, and a second extending portion extending from the second overlapping portion beyond the second film layer, that is, in the embodiment of the present invention, a depression is formed only on the first outer half side in the outer side of the separating table, and a depression is not formed on the second outer half side and the first inner half side in the inner side of the separating table, that is, a depression is formed between the first film layer and the second film layer in a direction opposite to the glue applying direction, and a depression is not formed between the first film layer and the second film layer in a direction opposite to the glue applying direction, so that it is possible to avoid air entrainment during the glue applying process and formation of air bubbles (air wrapped by the glue) when the first film layer and the second film layer are depressed in a direction opposite to the glue applying direction, thereby making subsequent air impossible to be excluded, in the low-pressure environment in the subsequent panel manufacturing process, the volume of bubbles is rapidly increased, and the problems of poor roundness and Mura caused by explosion occur.
Drawings
FIG. 1 is a schematic view showing a process of generating a defect due to bubbles at a position of a through-hole in the related art;
fig. 2 is a schematic structural diagram of an isolation platform according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an isolation stage having an overlapping region between a first outer half side and a second inner half side according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an isolation platform further including a hollow portion according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel further including a passivation layer according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a process for fabricating an isolation stage according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view illustrating a process for manufacturing an isolation stage according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
Referring to fig. 1, in the related art, the OLED display device requires that the organic light emitting material around the through hole is isolated to be completely encapsulated, wherein one implementation scheme is that a backplane isolation mesa is formed, and a recess (underrout) is formed on the backplane isolation mesa, that is, as shown in a side cross-sectional view of the backplane isolation mesa at the leftmost side in fig. 1, the backplane isolation mesa includes a third film layer 023, a second film layer 022, and a first film layer 021, which are sequentially disposed on a substrate, wherein an extension length of the second film layer 022 (i.e., a cross-sectional width of the second film layer 022 in a radial direction of the isolation mesa) is less than extension lengths of the first film layer 021 and the third film layer 023, so as to form a recess on a lower surface of the first film layer 021 and a side surface of the second film layer 022, and the recess can block continuity of a subsequently manufactured organic light emitting layer at the position, thereby preventing external moisture from invading into the organic light emitting layer of the display region through the, thereby affecting the organic light emitting layer of the display area. However, in the isolation stage with the recess, after the recess (underrout) is formed, when the colloid for manufacturing the pixel defining layer is coated subsequently, due to the tension of the colloid, Air (Air) in the recess (underrout) in the reverse direction of the gluing cannot be removed, bubbles (colloid-wrapped Air) are formed, and in a low-pressure environment in the subsequent manufacturing process, the volume of the Air is rapidly increased, the bubbles explode, and poor roundness and halo Mura are formed. That is, in the related art display panel, when the through hole is formed, there is a problem that bubbles are easily generated at the through hole position, and the bubbles are easily exploded during the forming process, so that the display panel is easily subjected to rounding defect and moire (Mura) at the through hole position.
Accordingly, an embodiment of the present invention provides a display panel, referring to fig. 2, wherein a right diagram in fig. 2 is a schematic top view of an isolation platform 2, a left diagram in fig. 2 is a schematic cross-sectional view at a dotted line OO' in the right diagram, and the display panel includes a through hole 1 penetrating through the display panel, including: a substrate base plate is positioned in a hollow isolation stage 2 surrounding the through hole 1 on one side of the substrate base plate, the isolation stage 2 having an inner side facing the through hole 1 and an outer side facing away from the through hole 1, the inner side including a first inner half side S21 positioned on a first radial direction AB first side (left side in fig. 2) and a second inner half side S22 positioned on a first radial direction AB second side (right side in fig. 2), the outer side including a first outer half side S11 positioned on the first side and a second outer half side S12 positioned on the second side, the first radial direction AB being a cross-sectional diameter of the isolation stage 2 and being perpendicular to a glue application direction CD when the pixel defining layer is fabricated (i.e., the pixel defining layer is formed after the isolation stage is fabricated, the pixel defining layer may be specifically positioned in the display area, and the area of the through hole 1 may not be provided with the pixel defining layer), the first side (left side of the first radial direction AB in fig. 2) and the second side (right side of the first radial direction AB in fig. 2), the first side (e.g. the left side of the first radial direction AB in fig. 2) is the side through which glue is applied first, i.e. the side from the left to the right in fig. 2 is applied when glue is applied, first the first side and then the second side;
the isolation stage 2 includes a first film layer 21, and a second film layer 22 located on a side of the first film layer 21 facing the substrate, wherein, in an outer side of the isolation stage 1, the first film layer 21 has a first overlapping portion 211 where the second film layer 22 on the first side overlaps only on a first outer half side S11, and a first extending portion 212 extending from the first overlapping portion 211 beyond the second film layer 22, that is, the first film layer 21 has a greater extension length than an end face of the second film layer 22 on a side away from the substrate at the first outer half side S11 only on a first outer half side S11, and as shown in fig. 2, a recess E1(E) may be formed on the first outer half side S11 between a surface of the first film layer 21 opposite to the second film layer 22 (i.e., a lower surface of the first film layer 21) and a side of the second film layer 22, for blocking continuity of an organic light emitting layer on a left side of the through hole 1 when the organic light emitting layer is formed subsequently, so as to avoid the organic light emitting layer contacting the outside air when the organic light emitting layer continues at the position, thereby affecting the performance of the organic light emitting layer in the display area; in the inner side of the isolation stage 2, the first film layer 21 has a second overlapping portion (not shown in the figure, and similar to the structure of the first outer half side) overlapping with the second film layer 22 on the second side only on the second inner half side S22, and a second extension portion extending from the second overlapping portion beyond the second film layer, that is, the first film layer 21 has an extension length larger than that of the end surface of the second film layer 22 on the side away from the substrate at the second inner half side S22 only on the second inner half side S22, and a recess E2(E) is formed on the surface of the first film layer 21 opposite to the second film layer 22 (i.e., the lower surface of the first film layer 21) and the side surface of the second film layer 22 at the second inner half side S22.
The display panel according to the embodiment of the invention has the first film layer 21 having the first overlapping portion 211 overlapping the second film layer 22 of the first side only on the first outer half side S11 and the first extending portion 212 extending from the first overlapping portion 211 beyond the second film layer 22 in the outer side of the barrier table 1 in the outer side of the barrier table 2, the first film layer 21 having the second overlapping portion overlapping the second film layer 22 of the second side only on the second inner half side S22 and the second extending portion extending from the second overlapping portion beyond the second film layer in the inner side of the barrier table 2, that is, the recess E is formed only on the first outer half side S11 in the outer side of the barrier table 2 and the second inner half side S22 in the inner side of the barrier table 2, and the recess E is not formed on the second outer half side S12, the first inner half side S21, the recess E is formed between the first film layer 21 and the second film layer 22 in the direction facing the glue application direction CD, and make between first rete 21 and the second rete 22 not form sunken E in the direction that is carried on the back with rubber coating direction CD, and then can be when blocking the organic luminescent layer of through-hole 1 position department, also can avoid making first rete 21 and second rete 22 form sunken E in the direction that is carried on the back with the rubber coating, can have air to be drawn into in the rubber coating process, and then form the bubble (the air of colloid parcel) when leading to follow-up air can't get rid of, in the low pressure environment of follow-up panel manufacture in-process, the bubble volume increases rapidly, the problem of explosion formation circular bad and halo Mura.
It should be noted that, in the outer side of the isolation stage 2, the extension length of the first film layer 21 on the first outer half side S11 is greater than the extension length of the end face of the second film layer 22 on the side away from the substrate on the first outer half side S11, that is, as shown in fig. 2, a recess E1 (undectrut, specifically, an etching solution for etching only the second film layer 22 can be selected by a wet etching process on the first outer half side S11 (the left outer half side in fig. 1) so as to partially etch the second film layer 22 and further remove more portions of the second film layer 22 inward relative to the first film layer 21) so that when the organic light emitting layer is formed by evaporation later, the continuity on the left side of the through hole 1 in the organic light emitting layer formation can be blocked, and the external air at the through hole 1 can be prevented from continuously invading the organic light emitting layer in the display region, affecting the material properties of the organic light emitting layer in the display area; similarly, in the inner side of the isolation stage 2, the extension length of the first film layer 21 on the second inner half side S22 is greater than the extension length of the end face of the second film layer 22 on the side far from the substrate on the second inner half side S22, so that the continuity of the organic light emitting layer on the right side of the through hole 1at the position of the through hole 1 can be blocked, and the influence on the material performance of the organic light emitting layer in the display area when the external air at the through hole 1 continuously invades into the organic light emitting layer in the display area can be avoided. In addition, it can be understood that the uppermost side of the display panel may be further provided with a package cover plate, and the through hole is mainly for providing the camera, and the through hole may not particularly penetrate through the package cover plate, and the display panel may particularly be understood as a structure other than the package cover plate.
In particular implementation, referring to fig. 2, in the outer side of the isolation stage 2, the side of the first film layer 21 on the second outer half S12 is located at the same slope as the side of the second film layer 22 on the second outer half S12; in the inner side of the isolation stage 2, the side of the first film layer 21 on the first inner half side S21 and the side of the second film layer 22 on the first inner half side S21 are located on the same slope. That is, the entire side wall of the second outer half S12 is made a flat slope without forming a depression, and further, it is possible to apply glue without forming bubbles in the direction opposite to the applied glue, and similarly, in the inner side of the isolation stage 2, the side of the first film layer 21 on the first inner half S21 and the side of the second film layer 22 on the first inner half S21 are positioned on the same slope, that is, the entire side wall of the first inner half S21 is made a flat slope without forming a depression, and further, it is possible to apply glue without forming bubbles in the direction opposite to the applied glue on the first inner half S21.
In specific implementation, the display panel further includes a source drain electrode layer located between the substrate and the pixel defining layer, the isolation platform 2 may be located in the same layer as the source drain electrode layer, that is, the isolation platform 2 is formed when the source drain electrode layer of the display panel is manufactured, and the specific composition of the isolation platform 2 may be the same as the structure of the source drain electrode layer, for example, the source drain electrode layer is a titanium film layer, an aluminum film layer, and a titanium film layer that are sequentially stacked, and then the isolation platform 2 may also be a titanium film layer, an aluminum film layer, and a titanium film layer that are sequentially stacked, that is, the first film layer 21 may be a titanium film layer, the second film layer 22 may be an aluminum film layer, and the third film layer 23 is. In the embodiment of the invention, the isolation platform 2 and the source and drain electrodes are positioned on the same layer, so that the isolation platform 2 can be synchronously manufactured and formed when the source and drain electrodes are manufactured, and the problem that the manufacturing process of the display panel is complicated when the isolation platform 2 is independently manufactured can be solved.
In a specific implementation, as shown in fig. 2, the isolation stage 2 further includes a third film layer 23 located on a side of the second film layer 22 facing the substrate; at the first outer half side S11, an included angle α between a surface of the first extension portion 212 facing the second film layer 22 and a side surface of the second film layer 22 is acute, and an included angle β between a surface of the third film layer 23 facing the second film layer 22 and a side surface of the second film layer 22 is obtuse; at the second inner half side S22, the angle between the surface of the second extension facing the second film 22 and the side of the second film 22 is acute, and the angle between the surface of the third film 23 facing the second film 22 and the side of the second film 22 is obtuse. Specifically, the cross section of the second film layer 22 may be trapezoidal.
In particular implementation, referring to fig. 3, there is an overlapping region S of the first outer half side S11 and the second inner half side S22 in a direction perpendicular to the first radial direction. That is, since the extension lengths of the first film layer 21 on the first outer half side S11 and the second inner half side S22 are both greater than the extension length of the second film layer 22, that is, the recess E1 (underrout) on the outer side of the through hole 1 overlaps the recess E2 (underrout) on the inner side, it is avoided that the organic light emitting layer cannot be blocked in the first radial direction AB when the first outer half side S11 and the second inner half side S22 are exactly aligned, so that external moisture may intrude into the organic light emitting layer in the first radial direction AB.
In particular implementations, the length L of the overlap region S in a direction perpendicular to the first radial direction may be 1/5R, where R is the radius of the through hole. Specifically, the length L of the overlapping area S in the direction perpendicular to the first radial direction is 1um to 500 um. More specifically, it may be 1um to 10 um. The width H of the overlapping area S in the first radial direction AB may be 1um to 200um, and more specifically, the width H of the overlapping area S in the first radial direction AB may be 1um to 4 um.
In particular, with reference to fig. 4, the isolation station 2 has, in the area of overlap S, a hollowed-out portion K communicating the first outer half-side S11 and the second inner half-side S22. The hollow portion K has a hollow side located at a second side (i.e. the right side in fig. 4) of the first radial direction AB, and an extension length of the first film layer 21 at the hollow side is greater than an extension length of the second film layer 22 at the hollow side, that is, the hollow side also forms a recess E3. In the embodiment of the present invention, the isolation platform 2 has a hollow-out portion K in the overlapping region S to connect the first outer half side S11 and the second inner half side S22. The hollow part K has a hollow side located on the second side of the first radial direction AB, the extending length of the first film layer 21 on the hollow side is greater than the extending length of the second film layer 22 on the hollow side, that is, the organic light emitting layer can be blocked on the first radial direction AB perpendicular to the organic light emitting layer at the overlapping region S by the hollow part K and the setting of the recess E3 (underrout) on the hollow side of the hollow part K, and then the invasion of the organic light emitting layer by external water vapor at the position along the first radial direction AB perpendicular to the organic light emitting layer is avoided.
In specific implementation, referring to fig. 5, the display panel further includes a passivation layer 3 located on a side of the isolation platform 2 facing away from the substrate (specifically, an anode layer may be further disposed between the isolation platform 2 and the layer where the pixel defining layer is located, and the passivation layer 3 may be located between the isolation platform 2 and the anode layer, and it is understood that a positional relationship between the isolation platform, the pixel defining layer, the anode layer, and the passivation layer may be specifically understood as a sequential relationship during manufacturing, and since the pixel defining layer and the anode layer are generally patterned film layers, in a direction perpendicular to the substrate, the location where the isolation platform is located may not be provided with the pixel defining layer and the anode layer), where the passivation layer 3 covers an orthographic projection of the isolation platform 2 on the substrate, and the passivation layer 3 has corresponding recessed structures E0 on the first outer half side S11 and the second inner half side S22. In the embodiment of the invention, the display panel further includes the passivation layer 3, the passivation layer 3 can wrap and protect the isolation mesa 2, so that the second film layer 22 (aluminum film layer) in the isolation mesa 2 can be completely isolated from the subsequent anode (including Ag film layer) process, and Ag particles are prevented from being generated, that is, the problem that the recess (underrout) can not block the organic light emitting layer due to the Ag particles filled in the recess (underrout) formed by the second film layer relative to the first film layer 21 is avoided.
In order to more clearly understand the structure of the display panel provided by the embodiment of the present invention, the following describes in detail the manufacturing process of the isolation stage provided by the embodiment of the present invention with reference to fig. 6 and 7 as follows:
step a, forming a source drain layer on the substrate base plate 10, and simultaneously forming an SD film layer of the isolation platform 2, wherein the source drain layer comprises a source drain pattern located in the display area, and a film layer structure of the isolation platform 2 located in the isolation platform area, namely, the isolation platform 2 comprises a third film layer 23, a second film layer 22 and a first film layer 21 which are sequentially located on the substrate base plate 10;
step b, forming a patterned first photoresist layer, wherein the first photoresist layer is used for removing the film layer corresponding to the through hole 1 in the step c and the film layer in the overlapping area;
c, removing the film layer corresponding to the through hole 1 in the isolation platform 2 and the film layer in the overlapping area (so as to form a hollow part K);
d, forming a patterned second photoresist layer, wherein the second photoresist layer exposes the isolation platform 2 film layer corresponding to the positions of the recess E1, the recess E2 and the recess E3;
step E, removing a portion of the second film layer 22 of the isolation mesa 2 at the first outer half side S11 and the second inner half side S22 through a Wet etching process (Wet Etch) to form a recess E1, a recess E2 and a recess E3;
and f, removing the second photoresist layer.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the display panel provided by the embodiment of the invention.
The embodiment of the invention has the following beneficial effects: in the display panel provided by the embodiment of the invention, in the outer side of the isolation platform, the first film layer is only provided with a first overlapping part which is overlapped with the second film layer on the first side on the first outer half side, and a first extending part which extends out of the second film layer from the first overlapping part; in the inner side of the isolation table, the first film layer has a second overlapping portion overlapping with the second film layer of the second side only at the second inner half side, and a second extending portion extending from the second overlapping portion and exceeding the second film layer, that is, in the embodiment of the present invention, a depression is formed only at the first outer half side in the outer side of the isolation table and at the second inner half side in the inner side of the isolation table, and no depression is formed at the second outer half side and the first inner half side, that is, a depression is formed between the first film layer and the second film layer in a direction opposite to the glue application direction, and no depression is formed between the first film layer and the second film layer in a direction opposite to the glue application direction, so that it is possible to avoid air entrainment during the glue application process when the first film layer and the second film layer are depressed in a direction opposite to the glue application direction, and further air bubbles (glue-wrapped air) are formed when the subsequent air cannot be excluded, in the low-pressure environment in the subsequent panel manufacturing process, the volume of bubbles is rapidly increased, and the problems of poor roundness and Mura caused by explosion occur.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A display panel is characterized by comprising a through hole penetrating through the display panel;
the display panel includes: a substrate base, an isolation mesa surrounding the through hole on one side of the substrate base, the isolation mesa having an inner side facing the through hole and an outer side facing away from the through hole, the inner side including a first inner half on a first radial first side and a second inner half on a first radial second side, the outer side including a first outer half on the first side and a second outer half on the second side, the first radial being a cross-sectional diameter of the isolation mesa;
the isolation stage comprises a first film layer and a second film layer located on a side of the first film layer facing the substrate, wherein in the outer side of the isolation stage, the first film layer has a first overlapping portion at the first outer half side overlapping the second film layer at the first side, and a first extension portion extending from the first overlapping portion beyond the second film layer; in the inner side of the isolation stage, the first film ply has a second overlap at the second inner half side that overlaps the second film ply of the second side, and a second outer extent extending from the second overlap beyond the second film ply.
2. The display panel of claim 1, wherein, in the outer side of the isolation mesa, a side of the first film layer at the second outer half is at a same slope as a side of the second film layer at the second outer half;
in the inner side of the isolation stage, a side of the first film ply on the first inner half side is on a same slope as a side of the second film ply on the first inner half side.
3. The display panel of claim 1,
on the first outer half side, an included angle between the surface of the first extension portion facing the second film layer and the side face of the second film layer is an acute angle;
and on the second inner half side, the surface of the second extension part facing the second film layer and the side surface of the second film layer form an acute angle.
4. The display panel according to any one of claims 1 to 3, wherein there is an overlapping area of the first outer half side and the second inner half side in a direction perpendicular to the first radial direction.
5. The display panel according to claim 4, wherein a length of the overlap area in a direction perpendicular to the first radial direction is 1um to 500 um.
6. The display panel of claim 4, wherein the isolation stage has a hollowed-out portion connecting the first outer half side and the second inner half side at the overlap region.
7. The display panel of claim 6, wherein the hollow portion has a hollow side located at the second side of the first radial direction, and an extension length of the first film layer at the hollow side is greater than an extension length of the second film layer at the hollow side.
8. The display panel of claim 3, wherein the isolation stage further comprises a third film layer on a side of the second film layer facing the substrate base plate.
9. The display panel of claim 1, further comprising a passivation layer on a side of the isolation mesa facing away from the substrate base plate, the passivation layer covering an orthographic projection of the isolation mesa on the substrate base plate, wherein the passivation layer has corresponding recessed structures on the first outer half side and the second inner half side.
10. The display panel of claim 1, wherein the display panel further comprises a source drain layer, and the isolation mesa is in the same layer as the source drain layer.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110246984A (en) * | 2019-06-21 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of production method of display panel, display device and display panel |
| CN110739342A (en) * | 2019-11-28 | 2020-01-31 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN110767735A (en) * | 2019-11-06 | 2020-02-07 | 京东方科技集团股份有限公司 | Manufacturing method of display panel, display panel and display |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110246984A (en) * | 2019-06-21 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of production method of display panel, display device and display panel |
| CN110767735A (en) * | 2019-11-06 | 2020-02-07 | 京东方科技集团股份有限公司 | Manufacturing method of display panel, display panel and display |
| CN110739342A (en) * | 2019-11-28 | 2020-01-31 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
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