CN118019384A - Display panel - Google Patents

Abstract

The application provides a display panel, which comprises an array substrate, light emitting units arranged on one side of the array substrate in an array manner, a packaging layer arranged on one side of the light emitting units far away from the array substrate, a color filter layer arranged on one side of the packaging layer far away from the light emitting units, and a touch electrode layer arranged on one side of the color filter layer far away from the packaging layer, wherein the color filter layer comprises a shading layer and a color film, the shading layer is provided with a first opening at a position corresponding to the light emitting units, the color film is arranged in the first opening, the touch electrode layer comprises a touch electrode and a reflecting electrode, the touch electrode is arranged on one side of the shading layer far away from the packaging layer, and the reflecting electrode is arranged on the side wall of the shading layer exposed by the first opening; according to the application, the polarizer is replaced by the color filter layer, and the touch electrode layer and the color filter layer are integrated, so that the light emitting efficiency of the light emitting unit is improved, the thickness of the film layer above the packaging layer is reduced, and the dynamic bending of the OLED display panel is more facilitated.

Description

Display panel

Technical Field

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

Background

With the development of display technology, an Organic Light-Emitting Diode (OLED) display has many advantages of self-luminescence, wide viewing angle, wide color gamut, fast response speed, high luminous efficiency, low operating voltage, thin thickness, capability of manufacturing a large-sized and flexible display, simple manufacturing process, and the like, and is widely applied in the fields of display, lighting, intelligent wearing, and the like. In order to prevent the reflection of the elements in the OLED display panel to the ambient light and affect the display quality, a polarizer with an anti-reflection function is generally attached to the light-emitting side of the OLED display panel, and the Polarizer (POL) can effectively reduce the reflectivity of the OLED display panel under strong light, but loses light-emitting close to 58%. This greatly increases the lifetime burden of the OLED display; on the other hand, the polaroid has thicker thickness and crisp material, and is not beneficial to realizing the dynamic bending of the OLED display panel.

In addition, in order to improve the light-emitting efficiency of the OLED display panel, microlens patterns (Micro LENS PATTERN, MLP) are arranged in the OLED display panel, so that more divergent light emitted by the OLED display panel is converged right above the OLED display panel. The microlens pattern is usually formed by first forming a low refractive index layer over the thin film encapsulation layer, forming an opening in the low refractive index layer corresponding to the position of the light emitting unit below, and then forming a high refractive index layer over the low refractive index layer and in the opening by a coating or inkjet Printing (IJP) process, so as to planarize the surface of the OLED display panel.

Disclosure of Invention

The application provides a display panel, which is used for solving the technical problem that the dynamic bending of an OLED display panel is not easy to realize due to the fact that the thickness of the existing polaroid and microlens pattern is thicker.

In order to solve the problems, the technical scheme provided by the application is as follows:

an embodiment of the present application provides a display panel including:

an array substrate;

the light-emitting units are arranged on one side of the array substrate in an array manner;

the packaging layer is arranged on one side of the light-emitting unit far away from the array substrate;

The color filter layer is arranged on one side, far away from the light-emitting unit, of the packaging layer, the color filter layer comprises a shading layer and a color film, a first opening is formed in the position, corresponding to the light-emitting unit, of the shading layer, and the color film is arranged in the first opening; and

The touch electrode layer comprises a touch electrode and a reflecting electrode, the touch electrode is arranged on one side, far away from the packaging layer, of the shading layer, and the reflecting electrode is arranged on the side wall, exposed out of the first opening, of the shading layer.

In the display panel provided by the embodiment of the application, the reflective electrode and the touch electrode are integrally arranged.

In the display panel provided by the embodiment of the application, a second opening is arranged between the reflective electrode and the touch electrode, and the second opening exposes a part of the light shielding layer.

In the display panel provided by the embodiment of the application, the opening size of the second opening ranges from 5 micrometers to 15 micrometers, and the distance between the second opening and the first opening ranges from 5 micrometers to 10 micrometers.

In the display panel provided by the embodiment of the application, the display panel further comprises a bridging layer positioned between the light shielding layer and the packaging layer, the bridging layer comprises bridging electrodes arranged corresponding to the light shielding layer, and part of the touch electrodes are electrically connected with the bridging electrodes through via holes on the light shielding layer.

In the display panel provided by the embodiment of the application, the display panel further comprises a first planarization layer, wherein the first planarization layer is arranged on one side of the color film and the touch electrode far away from the packaging layer; the refractive index of the first planarization layer is larger than that of the color film, and the refractive index of the color film is larger than that of the packaging layer.

In the display panel provided by the embodiment of the application, the display panel further comprises an anti-reflection layer positioned between the touch electrode layer and the first planarization layer, and the anti-reflection layer is arranged corresponding to the touch electrode.

In the display panel provided by the embodiment of the application, the display panel further comprises a first interlayer insulating layer positioned between the packaging layer and the color film, wherein the refractive index of the first interlayer insulating layer is larger than that of the packaging layer and smaller than that of the color film.

In the display panel provided by the embodiment of the application, the packaging layer comprises a first inorganic packaging layer, an organic packaging layer and a second inorganic packaging layer, the organic packaging layer is positioned between the first inorganic packaging layer and the second inorganic packaging layer, and the second inorganic packaging layer is positioned at one side of the first inorganic packaging layer far away from the light emitting unit, wherein the refractive index of the first inorganic packaging layer is smaller than that of the organic packaging layer, and the refractive index of the organic packaging layer is smaller than that of the second inorganic packaging layer.

In the display panel provided by the embodiment of the application, the display panel further comprises a pixel definition layer positioned between the array substrate and the packaging layer, a third opening is arranged on the pixel definition layer at a position corresponding to the first opening, and the light emitting unit is positioned in the third opening; the longitudinal section shapes of the first opening and the third opening are inverted trapezoids, the orthographic projection of the largest opening of the third opening on the array substrate is positioned in the range of orthographic projection of the smallest opening of the first opening on the array substrate, a first gap is formed between orthographic projection of the largest opening of the third opening on the array substrate and orthographic projection of the smallest opening of the first opening on the array substrate, and the range of the first gap is 1-10 microns.

The beneficial effects of the application are as follows: in the display panel provided by the application, the display panel comprises an array substrate, a light emitting unit arranged on one side of the array substrate in an array manner, a packaging layer arranged on one side of the light emitting unit far away from the array substrate, a color filter layer arranged on one side of the packaging layer far away from the light emitting unit, and a touch electrode layer arranged on one side of the color filter layer far away from the packaging layer, wherein the color filter layer comprises a shading layer and a color film, a first opening is arranged at a position of the shading layer corresponding to the light emitting unit, the color film is arranged in the first opening, the touch electrode layer comprises a touch electrode and a reflecting electrode, the touch electrode is arranged on one side of the shading layer far away from the packaging layer, and the reflecting electrode is arranged on the side wall of the shading layer exposed by the first opening; according to the application, the polarizer is replaced by the color filter layer, the touch electrode layer is integrated with the color filter layer, the thickness of the film layer above the packaging layer is reduced, the dynamic bending of the OLED display panel is more facilitated, the reflective electrode of the touch electrode layer can reflect light rays emitted by the light emitting unit back into the first opening, the light rays are prevented from being absorbed by the shading layer, so that the light emitting efficiency of the light emitting unit can be improved, the thickness of the display panel can be reduced while the light emitting efficiency of the display panel is improved, and the technical problem that the dynamic bending of the OLED display panel is not facilitated due to thicker patterns of the existing polarizer and micro lenses is solved.

Drawings

In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic cross-sectional structure of an OLED display panel according to the related art.

Fig. 2 is a schematic cross-sectional structure of a display panel according to an embodiment of the application.

Fig. 3 is a schematic diagram of an optical path of a portion of light emitted from the light emitting unit in fig. 2.

Fig. 4 is a schematic diagram of a detailed structure of the array substrate in fig. 2.

Fig. 5 is a schematic cross-sectional view of a display panel according to an embodiment of the application.

Fig. 6 is a schematic diagram of an optical path of a portion of light emitted from the light emitting unit in fig. 5.

Fig. 7 is a schematic diagram showing the comparison of the light emitting efficiency of the display panel of the present application and the OLED display panel of the related art.

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. The directional terms mentioned in the present application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., are only referring to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the application and is not limiting of the application. In the drawings, like elements are designated by like reference numerals. In the drawings, the thickness of some layers and regions are exaggerated for clarity of understanding and ease of description. I.e., the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited thereto.

Referring to fig. 1, fig. 1 is a schematic cross-sectional structure of an OLED display panel in the related art, and the OLED display panel includes an array substrate 10' and light emitting units 20' arrayed on the array substrate 10 '. The OLED display panel further includes a package layer 30' disposed at a side of the light emitting unit 20' away from the array substrate 10', a low refractive index layer 41' disposed at a side of the package layer 30' away from the light emitting unit 20', and a high refractive index layer 40', the low refractive index layer 41' being provided with an opening at a position corresponding to the light emitting unit 20', the high refractive index layer 40' being coated on the low refractive index layer 41' and filled in the opening to form a micro lens pattern, thereby improving light emitting efficiency of the OLED display panel, but in order to level the low refractive index layer 41' and the opening, a thicker high refractive index layer 40' is required, and the thicker film layer is not beneficial to realizing dynamic bending of the OLED display panel. On the other hand, the OLED display panel further includes a polarizer 50 'disposed on the side of the high refractive index layer 40' away from the light emitting unit 20', where the polarizer 50' is thicker and brittle, which is also not beneficial to dynamic bending of the OLED display panel. In addition, the OLED display panel further includes a touch structure 60' directly prepared on the encapsulation layer 30', and the touch structure 60' may be located between the encapsulation layer 30' and the low refractive index layer 41 '. Therefore, more and thicker film layers exist above the encapsulation layer 30' of the OLED display panel, which is not beneficial to realizing dynamic bending of the OLED display panel, and the more and thicker film layers also affect the light-emitting efficiency of the OLED display panel.

To this end, the present application provides a display panel, which has solved the above-mentioned problems.

Referring to fig. 2 to 4, fig. 2 is a schematic cross-sectional structure of a display panel according to an embodiment of the application, fig. 3 is a schematic light path of a portion of light emitted from the light emitting unit in fig. 2, and fig. 4 is a schematic detailed structure of the array substrate in fig. 2. The display panel 100 comprises an array substrate 10, light emitting units 20 arranged on one side of the array substrate 10 in an array manner, a packaging layer 30 arranged on one side of the light emitting units 20 away from the array substrate 10, a color filter layer 40 arranged on one side of the packaging layer 30 away from the light emitting units 20, and a touch electrode layer 60 arranged on one side of the color filter layer 40 away from the packaging layer 30.

The color filter layer 40 includes a light shielding layer 41 and a color film 42, the light shielding layer 41 is provided with a first opening 411 at a position corresponding to the light emitting unit 20, and the color film 42 is disposed in the first opening 411. The touch electrode layer 60 includes a touch electrode 61 and a reflective electrode 62, the touch electrode 61 is disposed on a side of the light shielding layer 41 away from the encapsulation layer 30, and the reflective electrode 62 is disposed on a sidewall of the light shielding layer 41 exposed by the first opening 411.

In this embodiment, the color filter layer 40 is adopted to replace the polarizer, and the touch electrode layer 60 is integrated with the color filter layer 40, so that the thickness of the film layer above the packaging layer 30 is reduced, and the dynamic bending of the display panel is more facilitated; moreover, the reflective electrode 62 of the touch electrode layer 60 can reflect the light emitted by the light emitting unit 20 back into the first opening 411 and close to the central light emitting area of the light emitting unit 20, so that the light emitted by the light emitting unit 20 is converged, and the light is prevented from being absorbed by the light shielding layer 41, thereby improving the light emitting efficiency of the light emitting unit 20; thus, the thickness of the display panel 100 can be reduced while the light-emitting efficiency of the display panel 100 is improved, so that the technical problem that the dynamic bending of the OLED display panel is not facilitated due to the fact that the thickness of the existing polaroid and microlens pattern is thicker is solved.

Specifically, referring to fig. 2, the light emitting units 20 are arranged on the array substrate 10 in an array manner, the light emitting units 20 include a first light emitting unit 21, a second light emitting unit 22, and a third light emitting unit 23, the light emitting colors of the first light emitting unit 21, the second light emitting unit 22, and the third light emitting unit 23 are different, for example, the first light emitting unit 21 emits red light, the first light emitting unit 21 is a red light emitting unit R, the second light emitting unit 22 emits green light, the second light emitting unit 22 is a green light emitting unit G, the third light emitting unit 23 emits blue light, and the third light emitting unit 23 is a blue light emitting unit B.

The packaging layer 30 is disposed on a side of the light emitting unit 20 away from the array substrate 10, and the packaging layer 30 is used for isolating water and oxygen to protect the light emitting unit 20, so as to avoid the failure of the light emitting unit 20 caused by water and oxygen invasion. Optionally, the encapsulation layer 30 includes a first inorganic encapsulation layer 31, an organic encapsulation layer 32, and a second inorganic encapsulation layer 33, the organic encapsulation layer 32 is located between the first inorganic encapsulation layer 31 and the second inorganic encapsulation layer 33, and the second inorganic encapsulation layer 33 is located on a side of the first inorganic encapsulation layer 31 away from the light emitting unit 20. Wherein, the refractive index of the first inorganic encapsulation layer 31 is smaller than the refractive index of the organic encapsulation layer 32, and the refractive index of the organic encapsulation layer 32 is smaller than the refractive index of the second inorganic encapsulation layer 33. The materials of the first inorganic encapsulation layer 31 and the second inorganic encapsulation layer 33 include inorganic materials such as silicon oxide and silicon nitride, and the material of the organic encapsulation layer 32 is an organic material with high light transmittance, for example, may be an organic photoresist.

The color filter layer 40 is disposed on a side of the encapsulation layer 30 away from the light emitting unit 20, the color filter layer 40 includes a light shielding layer 41 and a color film 42, the light shielding layer 41 is disposed with the first opening 411 at a position corresponding to the light emitting unit 20, a longitudinal section of the first opening 411 is in an inverted trapezoid shape, an orthographic projection of a minimum opening of the first opening 411 on the array substrate 10 covers an orthographic projection of the light emitting unit 20 on the array substrate 10, and a gap is formed between an orthographic projection of the minimum opening of the first opening 411 on the array substrate 10 and an orthographic projection of the light emitting unit 20 on the array substrate 10, so as to avoid the light shielding layer 41 from affecting a light emitting angle of the light emitting unit 20. The smallest opening of the first opening 411 is a position where the caliber of the first opening 411 is smallest, and because the longitudinal section of the first opening 411 is inverted trapezoid, the smallest opening of the first opening 411 is located at a position where the first opening 411 is close to the encapsulation layer 30.

The material of the light shielding layer 41 includes Black Matrix (BM) and the like. The color film 42 is disposed in the first opening 411, and the thickness of the color film 42 is greater than the thickness of the light shielding layer 41 in the thickness direction of the display panel 100. The color film 42 includes a first color film 421 corresponding to the first light emitting unit 21, a second color film 422 corresponding to the second light emitting unit 22, and a third color film 423 corresponding to the third light emitting unit 23, where the first color film 421 is a red color film, the second color film 422 is a green color film, and the third color film 423 is a blue color film. The color films 42 with different colors are color resistances with different colors, and the color films 42 with different colors allow the light with corresponding colors to pass through and filter the light with other colors, for example, the red color film allows the red light to pass through and filters the light with other colors.

The color filter layer 40 can significantly improve the transmittance of light compared to the polarizer in the related art, and has a smaller thickness, thereby facilitating the dynamic bending of the display panel 100. In order to planarize the surface of the color filter layer 40, the display panel further includes a first planarization layer 50, where the first planarization layer 50 is disposed on a side of the color filter layer 40 away from the encapsulation layer 30, and more specifically, on a side of the color film 42 and the touch electrode 61 away from the encapsulation layer 30. The material of the first planarization layer 50 includes an organic material having high light transmittance, such as PAS insulating paste. The refractive index of the first planarization layer 50 is greater than that of the color film 42, the refractive index of the color film 42 is greater than that of the encapsulation layer 30, and in the encapsulation layer 30, the refractive index of the first inorganic encapsulation layer 31 is less than that of the organic encapsulation layer 32, and the refractive index of the organic encapsulation layer 32 is less than that of the second inorganic encapsulation layer 33, so that the outgoing light of the light-emitting unit 20 sequentially passes through the encapsulation layer 30, the color film 42 and the first planarization layer 50 and then is gathered towards the central light-emitting area of the light-emitting unit 20, so that the light emitted by the light-emitting unit 20 is further gathered, the light-emitting efficiency of the light-emitting unit 20 is improved, and the light-emitting efficiency of the display panel 100 is further improved.

Optionally, the display panel 100 further includes a cover window 51 disposed on a side of the first planarization layer 50 away from the color filter layer 40, and the cover window 51 may be attached to a top surface of the display panel 100 by a transparent optical adhesive, such as OCA, to protect the display panel 100. The cover window 51 may be made of a flexible transparent material such as ultra-thin glass or polyimide.

Further, the touch electrode layer 60 includes a touch electrode 61 disposed on a side of the light shielding layer 41 away from the encapsulation layer 30, and the first planarization layer 50 is further disposed on a side of the touch electrode 61 away from the light shielding layer 41, that is, the first planarization layer 50 may cover the touch electrode 61 and the color film 42.

Optionally, referring to fig. 2 and 3, the touch electrode layer 60 further includes a reflective electrode 62, the reflective electrode 62 is disposed on a sidewall of the light shielding layer 41 exposed by the first opening 411, and the color film 42 is located in the first opening 411 and covers a surface of the reflective electrode 62 away from the light shielding layer 41. Alternatively, the reflective electrode 62 is integrally disposed with the touch electrode 61, that is, the touch electrode 61 is disposed on the upper surface of the light shielding layer 41 and extends from the upper surface to the sidewall of the light shielding layer 41 to form the reflective electrode 62, more specifically, the touch electrode 61 is disposed on the upper surface of the light shielding layer 41, and the reflective electrode 62 is disposed on the sidewall of the light shielding layer 41 and is located in the first opening 411. Wherein, the upper surface of the light shielding layer 41 refers to the surface of the light shielding layer 41 facing away from the encapsulation layer 30, the surface near the encapsulation layer 30 is the lower surface of the light shielding layer 41, the side wall connects the upper surface and the lower surface, and the side wall refers to the surface of the light shielding layer 41 exposed by the first opening 411.

Referring to fig. 3, the reflective electrode 62 is located in the first opening 411, when the light emitted from the light emitting unit 20 enters the first opening 411 from the packaging layer 30, the light is reflected on the surface of the reflective electrode 62, and the reflective electrode 62 reflects the light back into the first opening 411 and passes through the color film 42 in the first opening 411 to be emitted, so as to avoid the light emitted from the light emitting unit 20 with a large angle from being absorbed by the light shielding layer 41, thereby improving the utilization rate of the light emitted from the light emitting unit 20, wherein the straight line with an arrow in fig. 3 indicates the transmission path of the light. It is understood that, in order to improve the reflective performance of the reflective electrode 62, the material of the touch electrode layer 60 may be a conductive metal material with high reflectivity, for example, the touch electrode layer 60 may be TiAlTi or an ITO/IZO stack.

Optionally, the display panel 100 further includes a bridge layer between the light shielding layer 41 and the encapsulation layer 30, where the bridge layer includes a bridge electrode 71 disposed corresponding to the light shielding layer 41, and a portion of the touch electrode 61 is electrically connected to the bridge electrode 71 through a via hole on the light shielding layer 41. The touch electrode 61 includes a driving electrode and a sensing electrode, which are mutually cross-insulated to form a metal mesh structure, wherein one of the driving electrode and the sensing electrode is electrically connected to the bridging electrode 71.

It should be noted that, when the touch electrode layer 60 includes the reflective electrode 62 integrally disposed with the touch electrode 61, the reflective electrode 62 needs to have a high surface reflection performance, but the touch electrode 61 needs to have a low surface reflection performance, so that the display quality of the display panel 100 is affected when the surface reflection performance of the touch electrode 61 is high. Moreover, even if the touch electrode layer 60 does not include the reflective electrode 62, the touch electrode layer 60 is not required to have a high surface reflection performance, but the touch electrode 61 located on the upper surface of the light shielding layer 41 is made of a metal material, which may cause the touch electrode 61 to reflect the external ambient light, and may also affect the display quality of the display panel 100. For this reason, the display panel 100 of the present application further includes an anti-reflection layer 72 between the touch electrode layer 60 and the first planarization layer 50, the anti-reflection layer 72 is disposed corresponding to the touch electrode 61, and the anti-reflection layer 72 can reduce the surface reflection of the touch electrode 61 and improve the display quality of the display panel 100. The anti-reflection layer 72 may be formed by disposing anti-reflection films such as MoOx and TiOx on the touch electrode layer 60, and bombarding the surface thereof by using a Dry process to form a nano-scale periodic protruding structure, so as to further achieve the effect of reducing reflection.

Optionally, the display panel 100 further includes a first interlayer insulating layer 63 between the encapsulation layer 30 and the color film 42, wherein a refractive index of the first interlayer insulating layer 63 is greater than a refractive index of the encapsulation layer 30 and less than a refractive index of the color film 42. Therefore, after the outgoing light of the light emitting unit 20 sequentially passes through the encapsulation layer 30, the first interlayer insulating layer 63, the color film 42 and the first planarization layer 50, the outgoing light is further drawn toward the central light emitting area of the light emitting unit 20, so that the light emitted by the light emitting unit 20 is further concentrated, thereby further improving the light emitting efficiency of the light emitting unit 20, and further improving the light emitting efficiency of the display panel 100. Wherein the refractive indexes of the encapsulation layer 30, the first interlayer insulating layer 63, the color film 42 and the first planarization layer 50 are between 1.2 and 1.9. The material of the first interlayer insulating layer 63 includes an inorganic material such as silicon oxide or silicon nitride.

Further, referring to fig. 3 and 4 in combination, the display panel 100 further includes a pixel defining layer 80 between the array substrate 10 and the encapsulation layer 30, the pixel defining layer 80 is provided with a third opening 801 at a position corresponding to the first opening 411, and the light emitting unit 20 is located within the third opening 801; the longitudinal cross-sectional shapes of the first opening 411 and the third opening 801 are inverted trapezoids, the orthographic projection of the largest opening of the third opening 801 on the array substrate 10 is located in the range of the orthographic projection of the smallest opening of the first opening 411 on the array substrate 10, and a first gap is formed between the orthographic projection of the largest opening of the third opening 801 on the array substrate 10 and the orthographic projection of the smallest opening of the first opening 411 on the array substrate 10, and the range of the first gap is 1 micrometer to 10 micrometers, so as to further avoid the influence of the light shielding layer 41 on the light emitting angle of the light emitting unit 20. The largest opening of the third opening 801 is a position with the largest caliber of the third opening 801, and because the longitudinal section of the third opening 801 is in an inverted trapezoid shape, the largest opening of the third opening 801 is located at a position where the third opening 801 is close to the encapsulation layer 30.

The structure of the array substrate 10 is specifically described below:

Referring to fig. 4, the array substrate 10 includes a substrate 11 and a transistor 12 disposed at one side of the substrate 11, the transistor 12 including an active layer 121, a gate electrode 122, a source electrode 123, and a drain electrode 124. The display panel 100 further includes a first electrode 90 and a second electrode 91 opposite to each other, the light emitting unit 20 is disposed between the first electrode 90 and the second electrode 91, the first electrode 90 is electrically connected to the transistor 12, and the light emitting unit 20 emits light under the combined action of the first electrode 90 and the second electrode 91. Wherein the first electrode 90 is an anode, and the second electrode 91 is a cathode.

In order to shield the transistor 12 from light, the display panel 100 further includes a light shielding electrode 120 between the transistor 12 and the substrate 11. Of course, the array substrate 10 further includes a plurality of insulating layers between the elements of the transistor 12 and the first electrode 90, and the plurality of insulating layers include a buffer layer 13, a gate insulating layer 14, a second interlayer insulating layer 15, a passivation layer 16, and a second planarization layer 17.

Specifically, the light shielding electrode 120 is disposed on the substrate 11, and the buffer layer 13 covers the light shielding electrode 120 and the substrate 11. The material of the buffer layer 13 may include an inorganic material such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiON), etc., and the buffer layer 13 may prevent unwanted impurities or contaminants (e.g., moisture, oxygen, etc.) from diffusing from the substrate 11 into devices that may be damaged by such impurities or contaminants, while also providing a flat top surface. The material of the substrate 11 includes a flexible substrate 11 such as polyimide. The material of the light shielding electrode 120 includes a metal having light shielding property, and the like.

The active layer 121 is disposed on the buffer layer 13, and the active layer 121 includes a channel and source and drain regions located at both sides of the channel. The gate insulating layer 14 covers the active layer and is disposed corresponding to the channel. The gate electrode 122 is disposed on the gate insulating layer 14, and is also disposed corresponding to the channel. The second interlayer insulating layer 15 covers the gate electrode 122, a portion of the active layer 121, and the buffer layer 13.

The source electrode 123 and the drain electrode 124 are disposed on the second interlayer insulating layer 15, the source electrode 123 is electrically connected to the source region, the drain electrode 124 is electrically connected to the drain region, and the drain electrode 124 is also electrically connected to the light shielding electrode 120. The passivation layer 16 and the second planarization layer 17 are sequentially stacked to cover the source electrode 123, the drain electrode 124, and the second interlayer insulating layer 15.

The first electrode 90 is disposed on the second planarization layer 17 and is electrically connected to the drain electrode 124 through a via hole of the second planarization layer 17. The pixel defining layer 80 covers the first electrode 90 and the second planarization layer 17, and the third opening 801 is disposed at a position corresponding to the first electrode 90, and the third opening 801 exposes a portion of the first electrode 90. The light emitting unit 20 is disposed in the third opening 801 and is located on the first electrode 90. The second electrode 91 is disposed at a side of the light emitting unit 20 remote from the first electrode 90. The encapsulation layer 30 covers the second electrode 91.

In an embodiment, referring to fig. 5 and fig. 6, fig. 5 is a schematic cross-sectional structure of a display panel 100 according to an embodiment of the application, and fig. 6 is a schematic light path of a portion of light emitted from the light emitting unit 20 in fig. 5. Unlike the above embodiment, the touch electrode layer 60 further includes a reflective electrode 62, where the reflective electrode 62 is disposed on a sidewall of the light shielding layer 41 exposed by the first opening 411, and a second opening 611 is disposed between the reflective electrode 62 and the touch electrode 61, and the second opening 611 exposes a portion of the light shielding layer 41 to further reduce surface reflection of the touch electrode 61. Wherein the opening size of the second opening 611 ranges from 5 micrometers to 15 micrometers, and the distance between the second opening 611 and the first opening 411 ranges from 5 micrometers to 10 micrometers. The other descriptions refer to the above embodiments, and are not repeated here.

It should be noted that, the inventor of the present application further verifies the effect provided by the display panel 100 of the present application on the light extraction efficiency through the simulation. Referring to fig. 7, fig. 7 is a schematic diagram showing the comparison of the light-emitting efficiency of the display panel 100 according to the present application and the OLED display panel according to the related art, in fig. 7, "ref" refers to the light-emitting efficiency improvement data corresponding to the OLED display panel in fig. 1, "blend" refers to the provided data of the light-emitting efficiency corresponding to the display panel 100 according to the present application, and "W, R, G, B" respectively represents the improvement comparison of the light-emitting efficiencies of white light, red light, green light and blue light, and as can be seen from fig. 7, the light-emitting efficiency of the display panel 100 according to the present application is improved by 40.8% compared with the OLED display panel according to the related art, wherein the red light-emitting efficiency is improved by 56.9% to the maximum extent, the green light-emitting efficiency is improved by 23.8%, the blue light-emitting efficiency is improved by 30.2%, and the overall light-emitting efficiency is improved remarkably.

Based on the same inventive concept, the present application also provides an electronic device including the display panel of one of the foregoing embodiments.

As can be seen from the above embodiments:

The application provides a display panel, which comprises an array substrate, a light emitting unit, a packaging layer, a color filter layer and a touch electrode layer, wherein the light emitting unit is arranged on one side of the array substrate in an array manner, the packaging layer is arranged on one side of the light emitting unit away from the array substrate, the color filter layer is arranged on one side of the packaging layer away from the light emitting unit, the touch electrode layer is arranged on one side of the color filter layer away from the packaging layer, the color filter layer comprises a shading layer and a color film, a first opening is arranged at a position corresponding to the light emitting unit on the shading layer, the color film is arranged in the first opening, the touch electrode layer comprises a touch electrode and a reflecting electrode, the touch electrode is arranged on one side of the shading layer away from the packaging layer, and the reflecting electrode is arranged on the side wall of the shading layer exposed by the first opening; according to the application, the polarizer is replaced by the color filter layer, the touch electrode layer is integrated with the color filter layer, the thickness of the film layer above the packaging layer is reduced, the dynamic bending of the OLED display panel is more facilitated, the reflective electrode of the touch electrode layer can reflect light rays emitted by the light emitting unit back into the first opening, the light rays are prevented from being absorbed by the shading layer, so that the light emitting efficiency of the light emitting unit can be improved, the thickness of the display panel can be reduced while the light emitting efficiency of the display panel is improved, and the technical problem that the dynamic bending of the OLED display panel is not facilitated due to thicker patterns of the existing polarizer and micro lenses is solved.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The foregoing has described in detail embodiments of the present application, and specific examples have been employed herein to illustrate the principles and embodiments of the present application, the above description of the embodiments being only for the purpose of aiding in the understanding of the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A display panel, comprising:

an array substrate;

the light-emitting units are arranged on one side of the array substrate in an array manner;

the packaging layer is arranged on one side of the light-emitting unit far away from the array substrate;

The color filter layer is arranged on one side, far away from the light-emitting unit, of the packaging layer, the color filter layer comprises a shading layer and a color film, a first opening is formed in the position, corresponding to the light-emitting unit, of the shading layer, and the color film is arranged in the first opening; and

The touch electrode layer is arranged on one side, far away from the packaging layer, of the color filter layer, the touch electrode layer comprises a touch electrode and a reflecting electrode, the touch electrode is arranged on one side, far away from the packaging layer, of the shading layer, and the reflecting electrode is arranged on the side wall, exposed out of the first opening, of the shading layer.

2. The display panel of claim 1, wherein the reflective electrode is integrally provided with the touch electrode.

3. The display panel of claim 1, wherein a second opening is provided between the reflective electrode and the touch electrode, and the second opening exposes a portion of the light shielding layer.

4. A display panel according to claim 3, wherein the second opening has an opening size in the range of 5 to 15 microns and a distance between the second opening and the first opening in the range of 5 to 10 microns.

5. The display panel of claim 1, further comprising a bridge layer between the light shielding layer and the encapsulation layer, the bridge layer including bridge electrodes disposed corresponding to the light shielding layer, a portion of the touch electrodes being electrically connected to the bridge electrodes through vias in the light shielding layer.

6. The display panel according to any one of claims 1 to 5, further comprising a first planarization layer disposed on a side of the color film and the touch electrode away from the encapsulation layer; the refractive index of the first planarization layer is larger than that of the color film, and the refractive index of the color film is larger than that of the packaging layer.

7. The display panel of claim 6, further comprising an anti-reflective layer between the touch electrode layer and the first planarization layer, the anti-reflective layer disposed corresponding to the touch electrode.

8. The display panel of claim 6, further comprising a first interlayer insulating layer between the encapsulation layer and the color film, the first interlayer insulating layer having a refractive index greater than a refractive index of the encapsulation layer and less than a refractive index of the color film.

9. The display panel of claim 6, wherein the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, the organic encapsulation layer being located between the first inorganic encapsulation layer and the second inorganic encapsulation layer, the second inorganic encapsulation layer being located on a side of the first inorganic encapsulation layer away from the light emitting unit, wherein a refractive index of the first inorganic encapsulation layer is less than a refractive index of the organic encapsulation layer, and a refractive index of the organic encapsulation layer is less than a refractive index of the second inorganic encapsulation layer.

10. The display panel according to claim 6, further comprising a pixel definition layer between the array substrate and the encapsulation layer, the pixel definition layer being provided with a third opening at a position corresponding to the first opening, the light emitting unit being located within the third opening; the longitudinal section shapes of the first opening and the third opening are inverted trapezoids, the orthographic projection of the largest opening of the third opening on the array substrate is positioned in the range of orthographic projection of the smallest opening of the first opening on the array substrate, a first gap is formed between orthographic projection of the largest opening of the third opening on the array substrate and orthographic projection of the smallest opening of the first opening on the array substrate, and the range of the first gap is 1-10 microns.