CN110289296B

CN110289296B - Display panel and display device

Info

Publication number: CN110289296B
Application number: CN201910572409.3A
Authority: CN
Inventors: 王佳骏
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2022-03-29
Anticipated expiration: 2039-06-28
Also published as: CN110289296A

Abstract

The invention provides a display panel and a display device. The display panel includes: a substrate base plate; a plurality of pixels including a first pixel and a second pixel; the display area comprises a first sub-display area and a second sub-display area, the first pixels are located in the first sub-display area, the second pixels are located in the second sub-display area, and the pixel density of the first sub-display area is smaller than that of the second sub-display area; the first pixels include first pixel defining walls, and at least two adjacent first pixel defining walls are independent of each other. In the present invention, the first pixel defining wall blocks a part of incident light. The light transmittance of the area where one first pixel defining wall is located is smaller than that of the area between two adjacent first pixel defining walls. The area between two adjacent first pixel defining walls is high in light transmittance. This further improves the light transmittance of the entire first sub-display region, so that optical components such as a camera provided under the first sub-display region receive sufficient optical signals.

Description

Display panel and display device

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

Among Display technologies, an Organic Light Emitting Diode (OLED) Display is considered as a third generation Display technology following a Liquid Crystal Display (LCD) due to its advantages of lightness, thinness, active Light emission, fast response speed, wide viewing angle, rich colors, high brightness, low power consumption, and high and low temperature resistance.

Fig. 1 is a schematic structural diagram of a display device in the prior art.

As shown in fig. 1, in the related art, a display device 100 includes a display panel 110 and an optical member 120. The display panel 110 covers the optical member 120. The display panel 110 includes a pixel defining layer 111 and an organic light emitting layer 112. Wherein the pixel defining layer 111 is provided with a pixel opening area. The organic light emitting layer 112 is positioned in the pixel opening area. The pixel defining layer 111 is continuously provided at a region other than the pixel opening area. However, the light transmittance of the pixel defining layer 111 is not so high that the optical member 120 cannot receive a sufficient optical signal.

[ summary of the invention ]

In order to solve the above technical problems, the present invention provides a display panel and a display device.

In a first aspect, the present invention provides a display panel comprising:

a substrate base plate;

a plurality of pixels including a first pixel and a second pixel;

the display area comprises a first sub-display area and a second sub-display area, the first pixels are located in the first sub-display area, the second pixels are located in the second sub-display area, and the pixel density of the first sub-display area is smaller than that of the second sub-display area;

the first pixels include first pixel defining walls, and at least two adjacent first pixel defining walls are independent of each other.

Optionally, in the first sub-display area, any two adjacent first pixel defining walls are independent of each other.

Optionally, the first pixel includes a pixel circuit overlapping the first pixel defining wall in a direction perpendicular to a plane of the substrate base plate.

Optionally, the first pixel further comprises a support ring located on the first pixel defining wall, the support ring overlapping the first pixel defining wall in a direction perpendicular to the plane of the substrate.

Optionally, the first pixel defining wall includes a first pixel opening, the first pixel opening penetrating the first pixel defining wall;

the display panel further comprises an organic light emitting layer, and the organic light emitting layer is at least positioned in the first pixel opening.

Optionally, the support ring has a shape of any one of a closed ring, an open ring, and a segment ring in a direction perpendicular to a plane of the substrate base plate.

Optionally, the support ring surrounds the organic light emitting layer in a direction perpendicular to a plane of the substrate base plate.

Optionally, the organic light emitting layer overlaps the support ring in a direction perpendicular to a plane of the substrate base plate.

Optionally, the organic light emitting layer is located between the support ring and the first pixel defining wall; alternatively, the first and second electrodes may be,

the organic light-emitting layer is positioned on one side of the support ring away from the first pixel defining wall.

In a second aspect, based on the same inventive concept, the present invention provides a display device including the display panel.

Optionally, the display device further comprises:

an optical member, the first display region covering the optical member.

In the invention, the pixels comprise a first pixel and a second pixel, the first pixel is positioned in the first sub-display area, the second pixel is positioned in the second sub-display area, and the pixel density of the first sub-display area is less than that of the second sub-display area. This allows the second sub-display section to be high-resolution and the display panel to display a good quality image. In the first sub-display area, the first pixels block part of incident light, the area where any one first pixel is located is low in light transmittance, and the area between any two adjacent first pixels is high in light transmittance. In the second sub-display area, the second pixels block part of incident light, the area where any one second pixel is located is low in light transmittance, and the area between any two adjacent second pixels is high in light transmittance. The average area between any two adjacent first pixels is larger than the average area between any two adjacent second pixels. The whole light transmittance of the first sub-display area is larger than that of the second sub-display area. Therefore, optical components such as a camera and the like are arranged under the first sub-display area, and the display panel is completely screened. The first pixel includes a first pixel defining wall. A first pixel defining wall defines an organic light emitting region of a first pixel. There are at least two adjacent first pixel defining walls independent of each other. The first pixel defining walls block a portion of incident light. The light transmittance of the area where one first pixel defining wall is located is smaller than that of the area between two adjacent first pixel defining walls. The area between two adjacent first pixel defining walls is high in light transmittance. This further improves the light transmittance of the entire first sub-display region, so that optical components such as a camera provided under the first sub-display region receive sufficient optical signals.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art display device;

FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 3 is a partial enlarged view of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the display panel of FIG. 3 according to the embodiment of the invention;

FIG. 5 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a pixel circuit in a display panel according to an embodiment of the invention;

FIG. 7 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of the display panel of FIG. 7 according to the embodiment of the invention;

FIG. 9 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of the display panel of FIG. 9 according to the embodiment of the invention;

FIG. 11 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 12 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 13 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view of the display panel of FIG. 13 according to the embodiment of the invention;

FIG. 15 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view of the display panel of FIG. 15 according to the embodiment of the invention;

FIG. 17 is a schematic diagram of a display device according to an embodiment of the present invention;

FIG. 18 is a schematic view of another structure of a display device according to an embodiment of the invention.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, etc. may be used herein to describe devices in accordance with embodiments of the present invention, these devices should not be limited by these terms. These terms are only used to distinguish one device from another. For example, a first device may also be referred to as a second device, and similarly, a second device may also be referred to as a first device, without departing from the scope of embodiments of the present invention.

FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention; FIG. 3 is a partial enlarged view of the display panel of FIG. 2 according to the embodiment of the present invention; fig. 4 is a schematic cross-sectional view of the display panel of fig. 3 according to the embodiment of the invention.

As shown in fig. 2 to 4, the display panel 200 includes: a substrate base plate BL; a plurality of pixels PX, the pixels PX including a first pixel PX1 and a second pixel PX 2; a display area AA including a first sub-display area AA1 and a second sub-display area AA2, wherein the first pixel PX1 is located in the first sub-display area AA1, the second pixel PX2 is located in the second sub-display area AA2, and the pixel density of the first sub-display area AA1 is less than that of the second sub-display area AA 2; the first pixels PX1 include first pixel defining walls PDL, and there are at least two adjacent first pixel defining walls PDL independent from each other.

In the embodiment of the present invention, the pixel PX includes a first pixel PX1 and a second pixel PX2, the first pixel PX1 is located in the first sub-display area AA1, the second pixel PX2 is located in the second sub-display area AA2, and the pixel density of the first sub-display area AA1 is less than the pixel density of the second sub-display area AA 2. This causes the second sub display area AA2 to be high-resolution and the display panel 200 to display a good quality image. In the first sub-display area AA1, the first pixels PX1 block a part of incident light, the area where any one of the first pixels PX1 is located has low transmittance, and the area between any two adjacent first pixels PX1 has high transmittance. In the second sub-display area AA2, the second pixels PX2 block a part of incident light, the area where any one of the second pixels PX2 is located has low light transmittance, and the area between any two adjacent second pixels PX2 has high light transmittance. The average area of the region between any two adjacent first pixels PX1 is larger than the average area between any two adjacent second pixels PX 2. The overall light transmittance of the first sub-display area AA1 is greater than that of the second sub-display area AA 2. This allows optical components such as a camera to be disposed under the first sub-display area AA1 and the display panel 200 to be fully screened. The first pixel PX1 includes a first pixel defining wall PDL. One first pixel defining wall PDL defines an organic light emitting region of one first pixel PX 1. There are at least two adjacent first pixel definition walls PDL independent of each other, i.e., not physically connected to each other. The first pixel defining walls PDL block a portion of the incident light. The light transmittance of an area where one first pixel defines the wall PDL is smaller than that of an area between two adjacent first pixels defining the wall PDL. The area between two adjacent first pixel definition wall PDLs is highly light transmissive. This further increases the light transmittance of the entire first sub-display area AA1, so that optical components such as a camera provided under the first sub-display area AA1 receive sufficient optical signals.

Fig. 5 is another enlarged view of a portion of the display panel of fig. 2 according to the embodiment of the invention.

Alternatively, as shown in fig. 5, any two adjacent first pixel defining walls PDL are independent of each other in the first sub display area AA 1.

In the embodiment of the present invention, any two adjacent first pixel defining walls PDL are independent of each other in the first sub display area AA 1. The light transmittance of the area between any adjacent two first pixels defining the wall PDL is increased. For example, the first sub display area AA1 includes N first pixels defining a wall PDL. The light transmittance of the region between the 1 st first pixel defining wall PDL and any other first pixel defining wall PDL adjacent to the 1 st first pixel defining wall PDL is increased. The light transmittance of the region between the 2 nd first pixel defining wall PDL and any other first pixel defining wall PDL adjacent to the 2 nd first pixel defining wall PDL is increased. The other first pixels define a wall PDL and so on. The light transmittance of the region between the nth first pixel defining wall PDL and any other first pixel defining wall PDL adjacent to the nth first pixel defining wall PDL is increased. This further increases the light transmittance of the entire first sub-display area AA1, so that optical components such as a camera provided under the first sub-display area AA1 receive more sufficient optical signals.

Alternatively, as shown in fig. 4, the first pixel PX1 includes a pixel circuit PD overlapping the first pixel defining wall PDL in a direction perpendicular to the plane of the substrate base BL.

Fig. 6 is a schematic structural diagram of a pixel circuit in a display panel according to an embodiment of the invention.

As shown in fig. 6, the display panel 200 includes a semiconductor layer PL, a first metal layer M1, a second metal layer M2, and a third metal layer M3. The display panel 200 further includes first scan lines SL1, second scan lines SL2, emission lines EL, reference lines RL, data lines DL, and power supply lines VL. The pixel circuit PD of the first pixel PX1 includes: a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor C1. The first pixel PX1 further includes an organic light emitting diode. The semiconductor layer PL, the first metal layer M1, the second metal layer M2, and the third metal layer M3 are sequentially disposed in a direction perpendicular to the plane of the display panel 200 and between the substrate base BL and the first pixel defining wall PDL. The control electrode (gate) of the transistor is located in the first metal layer M1, and the first electrode and the second electrode (source and drain) of the transistor are located in the semiconductor layer PL. Two electrode plates of the storage capacitor C1 are respectively located in the first metal layer M1 and the second metal layer M2. The electrode plate of the storage capacitor C1 located in the first metal layer M1 is multiplexed with the gate electrode of the third transistor T3 located in the first metal layer M1. The first scan line SL1, the second scan line SL2, and the emission line EL are located at the first metal layer M1. Reference line RL is located in second metal layer M2. The data line DL and the power line VL are located at the third metal layer M3. A control electrode of the fifth transistor T5 is electrically connected to the first scan line SL1, a first electrode of the fifth transistor T5 is electrically connected to a control electrode of the third transistor T3, and a second electrode of the fifth transistor T5 is electrically connected to the reference line RL. A control electrode of the seventh transistor T7 is electrically connected to the first scan line SL1, a first electrode of the seventh transistor T7 is electrically connected to the organic light emitting diode of the first pixel PX1, and a second electrode of the seventh transistor T7 is electrically connected to the reference line RL. A control electrode of the second transistor T2 is electrically connected to the second scan line SL2, a first electrode of the second transistor T2 is electrically connected to a first electrode of the third transistor T3, and a second electrode of the second transistor T2 is electrically connected to the data line DL. A control electrode of the fourth transistor T4 is electrically connected to the second scan line SL2, a first electrode of the fourth transistor T4 is electrically connected to a control electrode of the third transistor T3, and a second electrode of the fourth transistor T4 is electrically connected to a second electrode of the third transistor T3. A control electrode of the first transistor T1 is electrically connected to the emitter line EL, a first electrode of the first transistor T1 is electrically connected to a first electrode of the third transistor T3, and a second electrode of the first transistor T1 is electrically connected to the power supply line VL. A control electrode of the sixth transistor T6 is electrically connected to the emission line EL, a first electrode of the sixth transistor T6 is electrically connected to the second electrode of the third transistor T3, and a second electrode of the sixth transistor T6 is electrically connected to the organic light emitting diode of the first pixel PX 1. A first electrode of the storage capacitor C1 is electrically connected to a control electrode of the third transistor T3, and a second electrode of the storage capacitor C1 is electrically connected to the power supply line VL. The organic light emitting diode of the first pixel PX1 includes: an anode, an organic light emitting layer such as a hole injection layer HIL, a hole transport layer HTL, a light emitting layer EML, an electron transport layer ETL, and an electron injection layer EIL, and a cathode. In the first pixel PX1, the pixel circuit PD drives the organic light emitting diode to emit light.

In the embodiment of the present invention, the pixel circuit PD overlaps the first pixel defining wall PDL in a direction perpendicular to the plane of the substrate base BL. The pixel circuit PD includes an electrode plate of the storage capacitor C1, a first scan line SL1, a second scan line SL2, an emission line EL, a reference line RL, a data line DL, a power supply line VL, and so on, which are light-impermeable metals. The opaque metal of the pixel circuit PD overlaps the first pixel defining wall PDL. The opaque metal of the pixel circuit PD does not overlap the area between two adjacent first pixel defining walls PDL, or the overlapping area of the opaque metal of the pixel circuit PD and the area between two adjacent first pixel defining walls PDL becomes smaller. The light transmittance of the area between two adjacent first pixels defining the wall PDL is further improved. The light transmittance of the entire first sub-display area AA1 is further increased so that optical components such as a camera provided under the first sub-display area AA1 receive more sufficient optical signals.

FIG. 7 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention; FIG. 8 is a schematic cross-sectional view of the display panel of FIG. 7 according to the embodiment of the invention.

Alternatively, as shown in fig. 7 and 8, the first pixel PX1 further includes a support ring PS on the first pixel defining wall PDL, and the support ring PS overlaps the first pixel defining wall PDL in a direction perpendicular to the plane of the substrate base plate BL.

In the manufacturing process of the display panel 200, the first pixel defining walls PDL are formed on the substrate BL. Then, the support ring PS is formed on the side of the first pixel defining wall PDL away from the substrate base BL. Then, an organic light-emitting layer is formed by evaporation. The support ring PS may be used to support the evaporation mask on the first pixel defining wall PDL, so as to prevent the evaporation mask from scratching the film layer on the substrate BL.

In the embodiment of the present invention, the first pixel PX1 further includes a support ring PS on the first pixel defining wall PDL. The organic light emitting layer in the first pixel PX1 is formed by an evaporation process. In the evaporation process of the organic light emitting layer in the first pixel PX1, the support ring PS supports the evaporation mask on the first pixel defining wall PDL. The support ring PS overlaps the first pixel defining wall PDL in a direction perpendicular to the plane of the substrate base BL. The first pixel defines a wall PDL to support a support ring PS, and the support ring PS supports an evaporation mask plate. The support rings PS are not disposed in the region between two adjacent first pixel defining walls PDL. The light transmittance of the area between two adjacent first pixels defining the wall PDL is further improved. The light transmittance of the entire first sub-display area AA1 is further increased so that optical components such as a camera provided under the first sub-display area AA1 receive more sufficient optical signals.

FIG. 9 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention; FIG. 10 is a schematic cross-sectional view of the display panel of FIG. 9 according to the embodiment of the invention.

Alternatively, as shown in fig. 7 to 10, the first pixel defining wall PDL includes a first pixel opening PO, and the first pixel opening PO extends through the first pixel defining wall PDL; the display panel 200 further includes an organic light emitting layer OL at least located in the first pixel opening PO.

In the embodiment of the invention, the first pixel opening PO extends through the first pixel defining wall PDL, and the organic light emitting layer OL is at least located in the first pixel opening PO. The organic light emitting layer OL extends from the surface of the first pixel defining wall PDL on the side closer to the substrate base BL to the surface of the first pixel defining wall PDL on the side farther from the substrate base BL. The first pixel defining wall PDL is provided with an anode on a side close to the substrate base BL. The first pixel defining walls PDL are provided with cathodes on the side away from the substrate base BL. The organic light emitting layer OL is electrically connected to the anode electrode at a side of the first pixel defining wall PDL close to the substrate base BL. The organic light emitting layer OL and the cathode are electrically connected at the side of the first pixel defining wall PDL remote from the substrate base BL. The anode electrode is electrically connected to the pixel circuit PD at a side close to the substrate base BL. The pixel circuit PD transmits a driving current into the organic light emitting diode and drives the organic light emitting diode to emit light.

FIG. 11 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention; fig. 12 is another enlarged view of a portion of the display panel of fig. 2 according to the embodiment of the invention.

Alternatively, as shown in fig. 8 to 12, the support ring PS has any one of a closed ring shape, an open ring shape, and a segment ring shape in a direction perpendicular to the plane of the substrate base plate BL.

In the embodiment of the present invention, the support ring PS may be shaped in a closed ring shape in a direction perpendicular to the plane of the substrate base plate BL. After the support ring PS is formed on the side of the first pixel defining wall PDL away from the substrate BL, the organic light emitting layer OL is formed by evaporating an organic light emitting material; wherein the evaporated organic light emitting material may flow. In the process of evaporating the organic light emitting material, the support ring PS having a closed ring shape prevents the organic light emitting material from flowing from one first pixel defining wall PDL to another first pixel defining wall PDL. The support ring PS may also be shaped as an open ring in a direction perpendicular to the plane of the substrate base plate BL. The open ring-shaped support ring PS is suitable for the flexible display panel 200. The open ring-shaped support ring PS is easy to release bending stress when bending so as to prevent the bending stress in the open ring-shaped support ring PS from damaging the flexible display panel 200. The support ring PS may also be shaped as a segmented ring in a direction perpendicular to the plane of the substrate base plate BL. The segment ring-shaped support ring PS is suitable for the flexible display panel 200. The segment-shaped annular support ring PS releases bending stress in a segment manner when bending, so as to prevent the flexible display panel 200 from being damaged by the bending stress in the open annular support ring PS.

Alternatively, as shown in fig. 8 to 12, the support ring PS surrounds the organic light emitting layer OL in a direction perpendicular to the plane of the substrate base BL.

In the embodiment of the present invention, the support ring PS surrounds the organic light emitting layer OL in a direction perpendicular to the plane of the substrate base BL. After the support rings PS are formed on the sides of the first pixel defining walls PDL away from the substrate BL, the organic light emitting layer OL is formed in the region surrounded by the support rings PS by evaporation. The organic light emitting layer OL may be formed only in the first pixel opening PO. The support ring PS surrounds the organic light emitting layer OL in the first pixel opening PO. The organic light emitting layer OL may also be formed in the first pixel opening PO and the side of the first pixel defining wall PDL away from the substrate base BL. The support ring PS surrounds the organic light emitting layer OL located in the first pixel opening PO and on the side of the first pixel defining wall PDL away from the substrate base BL. The support ring PS does not cover the light emitting region of the organic light emitting layer OL. The support ring PS does not reduce the light emitted from the organic light-emitting layer OL. This ensures the image quality of the display panel 200.

FIG. 13 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention; FIG. 14 is a schematic cross-sectional view of the display panel of FIG. 13 according to the embodiment of the invention.

Alternatively, as shown in fig. 13 and 14, the organic light-emitting layer OL overlaps the support ring PS in a direction perpendicular to the plane of the substrate base BL.

In the embodiment of the present invention, the organic light emitting layer OL overlaps the support ring PS in a direction perpendicular to the plane of the substrate base BL. In the first pixel PX1, the organic light emitting layer OL is not only located in the region surrounded by the support ring PS, but also covers or is covered by the support ring PS. The light emitting region of the organic light emitting layer OL in the first pixel PX1 becomes large. This makes the luminance of the single first pixel PX1 large and larger than the luminance of the single second pixel PX 2. The density of the first pixels PX1 in the first sub display area AA1 is less than the density of the second pixels PX2 in the second sub display area AA 2. The number M of the first pixels PX1 per unit area of the first sub display area AA1 is smaller than the number N of the second pixels PX2 per unit area of the second sub display area AA 2. The M first pixels PX1 in the unit area of the first sub display area AA1 have luminance greater than the M second pixels PX2 in the unit area of the second sub display area AA2, and the difference between the two is equal to the first luminance difference. The luminance of the other N-M second pixels PX2 in the unit area of the second sub-display area AA2 is equal to the second luminance difference. The first luminance difference compensates for the second luminance difference, and the luminance per unit area of the first sub-display area AA1 is equal to the luminance per unit area of the second sub-display area AA 2. This makes the brightness of the display area AA uniform.

FIG. 15 is another enlarged view of a portion of the display panel of FIG. 2 according to the embodiment of the present invention; fig. 16 is a schematic cross-sectional view of the display panel of fig. 15 according to the embodiment of the invention.

Alternatively, as shown in fig. 13 to 16, the organic light emitting layer OL is located between the support ring PS and the first pixel defining wall PDL; alternatively, the organic light emitting layer OL is located on a side of the support ring PS away from the first pixel defining wall PDL.

In one embodiment of the present invention, the organic light emitting layer OL is located between the support ring PS and the first pixel defining wall PDL. First, a first pixel defining wall PDL is formed on a substrate BL. Then, an organic light emitting layer OL is formed in the first pixel opening PO and on the first pixel defining wall PDL by evaporation. Then, the support rings PS are formed on the first pixel defining walls PDL and on the organic light emitting layer OL. Then, a cathode is formed on the organic light emitting layer OL and the support ring PS by evaporation. The support ring PS supports the evaporation mask plate for the evaporation cathode on the first pixel definition wall PDL so as to prevent the evaporation mask plate for the evaporation cathode from scratching a film layer on the substrate BL. In another embodiment of the present invention, the organic light emitting layer OL is located on a side of the support ring PS away from the first pixel defining wall PDL. First, a first pixel defining wall PDL is formed on a substrate BL. Then, the support ring PS is formed on the side of the first pixel defining wall PDL away from the substrate base BL. The organic light emitting layer OL is then formed by evaporation. The support ring PS supports an evaporation mask for evaporating the organic light emitting layer OL on the first pixel defining wall PDL so as to prevent the evaporation mask for evaporating the organic light emitting layer OL from scratching a film layer on the substrate BL.

Fig. 17 is a schematic structural diagram of a display device according to an embodiment of the invention.

As shown in fig. 17, the display device 300 includes a display panel 200.

In the embodiment of the present invention, the display device 300 utilizes the display panel 200 to implement display, such as a smart phone or other electronic devices. The display panel 200 is described above and will not be described in detail.

Optionally, as shown in fig. 18, the display device 300 further includes: the optical member OD, the first display area AA1, covers the optical member OD.

In an embodiment of the invention, the display device 300 further comprises optical components OD, such as a camera, sensors (light sensors, distance sensors, iris recognition sensors, fingerprint recognition sensors). The first display area AA1 covers the optical member OD. The display panel 200 realizes a full-screen. The first sub-display area AA1 has high light transmittance. The optical component OD may receive a sufficient optical signal.

In summary, the present invention provides a display panel and a display device. The display panel includes: a substrate base plate; a plurality of pixels including a first pixel and a second pixel; the display area comprises a first sub-display area and a second sub-display area, the first pixels are located in the first sub-display area, the second pixels are located in the second sub-display area, and the pixel density of the first sub-display area is smaller than that of the second sub-display area; the first pixels include first pixel defining walls, and at least two adjacent first pixel defining walls are independent of each other. In the present invention, the first pixel defining wall blocks a part of incident light. The light transmittance of the area where one first pixel defining wall is located is smaller than that of the area between two adjacent first pixel defining walls. The area between two adjacent first pixel defining walls is high in light transmittance. This further improves the light transmittance of the entire first sub-display region, so that optical components such as a camera provided under the first sub-display region receive sufficient optical signals.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A display panel, comprising:

a substrate base plate;

a plurality of pixels including a first pixel and a second pixel;

the first pixels comprise first pixel defining walls, and at least two adjacent first pixel defining walls are independent;

one of the first pixel defining walls defines an organic light emitting region of one of the first pixels;

the first pixel further comprises a support ring on the first pixel defining wall, the support ring overlapping the first pixel defining wall in a direction perpendicular to a plane of the substrate;

the first pixel defining wall includes a first pixel opening, the first pixel opening penetrating the first pixel defining wall;

the display panel further comprises an organic light emitting layer, wherein the organic light emitting layer is at least positioned in the first pixel opening;

for the two adjacent first pixel defining walls which are independent from each other, the light transmittance of the area where the first pixel defining wall is located is smaller than that of the area between the two adjacent first pixel defining walls.

2. The display panel according to claim 1, wherein any two adjacent first pixel defining walls are independent of each other in the first sub-display region.

3. The display panel according to claim 1, wherein the first pixel includes a pixel circuit which overlaps with the first pixel defining wall in a direction perpendicular to a plane of the substrate base plate.

4. The display panel according to claim 1, wherein the support ring has a shape of any one of a closed ring shape, an open ring shape, and a segment ring shape in a direction perpendicular to a plane of the substrate base plate.

5. The display panel according to claim 1, wherein the support ring surrounds the organic light emitting layer in a direction perpendicular to a plane of the substrate base plate.

6. The display panel according to claim 1, wherein the organic light emitting layer overlaps the support ring in a direction perpendicular to a plane of the substrate base plate.

7. The display panel according to claim 6, wherein the organic light emitting layer is located between the support ring and the first pixel defining wall; alternatively, the first and second electrodes may be,

8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.

9. The display device according to claim 8, further comprising:

an optical member, the first sub-display area covering the optical member.