Display panel, display device

Abstract

The application provides a display panel, a preparation method thereof and a display device to solve the problem of poor front viewing angle brightness improvement effect. The display panel comprises an array substrate, a first protruding structure arranged on one side of the array substrate, the first protruding structure comprising a first protruding platform and a first light adjusting side wall, the first protruding platform being connected with the first light adjusting side wall, and a first electrode, the first electrode covering the first protruding structure to form a second protruding structure, the orthographic projection of the second protruding structure on the array substrate covering the orthographic projection of the first protruding structure on the array substrate, the second protruding structure comprising a second protruding platform and a second light adjusting side wall, and the plane where the second protruding platform is located being parallel to the array substrate.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] With the increasing demands for screen brightness and low power consumption in terminals, improving the light emission efficiency of Organic Light Emitting Diodes (OLEDs) has become a key technological direction for the industry. Existing display layer structures are limited by the shape of the light-emitting area, resulting in poor brightness improvement at the viewing angle, necessitating optimization and improvement of the light-emitting area shape. Summary of the Invention

[0003] In view of this, this application proposes a display panel and display device to solve the problem of poor brightness improvement effect at the normal viewing angle.

[0004] To solve the above-mentioned technical problems, the following technical solutions are adopted in the embodiments of this application:

[0005] In a first aspect, this application provides a display panel, comprising: an array substrate; a first protrusion structure disposed on one side of the array substrate, the first protrusion structure including a first protrusion platform and a first dimming sidewall, the first protrusion platform being connected to the first dimming sidewall; a first electrode covering the first protrusion structure to form a second protrusion structure, the orthographic projection of the second protrusion structure on the array substrate covering the orthographic projection of the first protrusion structure on the array substrate, the second protrusion structure including a second protrusion platform and a second dimming sidewall, the plane of the second protrusion platform being parallel to the array substrate.

[0006] According to one embodiment of this application, the system further includes a first pixel defining layer, a second pixel defining layer, and a light-emitting functional layer. The first pixel defining layer is disposed on one side of the array substrate and includes a first sidewall that forms a first pixel opening. The second pixel defining layer is disposed on the side of the first pixel defining layer facing away from the array substrate. The orthogonal projection of the second pixel defining layer on the array substrate covers the orthogonal projection of the first pixel defining layer on the array substrate. The second pixel defining layer includes a second sidewall that forms a second pixel opening. The first pixel opening and the second pixel opening communicate to form a pixel opening. A first protrusion structure is disposed within the second pixel opening. The array substrate includes a first surface that is located within the second pixel opening and does not overlap with the first protrusion structure. An electrode covers a first protruding structure and extends to cover a first surface. A light-emitting functional layer is located within a pixel opening. The light-emitting functional layer is disposed on the side of the first electrode opposite to the first protruding structure and extends to cover the first electrode and a second sidewall. The light-emitting functional layer covers a second protruding structure to form a third protruding structure. The orthographic projection of the third protruding structure on the array substrate covers the orthographic projection of the second protruding structure on the array substrate. The third protruding structure includes a third protruding platform and a third dimming sidewall. The plane of the third protruding platform is parallel to the array substrate. The thickness of the first protruding structure is less than the sum of the thicknesses of the first pixel defining layer and the second pixel defining layer. The first pixel defining layer is manufactured using the same process as the first protruding structure, and the thickness of the first pixel defining layer is equal to the thickness of the first protruding structure.

[0007] According to one embodiment of this application, the shape of the first protrusion platform includes at least one of a rectangle, a cross, and a ring; the first protrusion structure within the same second pixel opening includes a plurality of first protrusion units; and the plurality of first protrusion units within the same second pixel opening are arranged in an array.

[0008] According to one embodiment of this application, it further includes a second electrode and a first encapsulation layer. The second electrode is disposed on the side of the light-emitting functional layer away from the first electrode. The second electrode covers the third protrusion structure to form a fourth protrusion structure. The orthographic projection of the fourth protrusion structure on the array substrate covers the orthographic projection of the third protrusion structure on the array substrate. The first encapsulation layer includes a first encapsulation portion and a second encapsulation portion. The first encapsulation portion is disposed on the side of the second electrode away from the light-emitting functional layer and extends to cover the second sidewall. The first encapsulation portion covers the fourth protrusion structure to form a fifth protrusion structure. The orthographic projection of the fifth protrusion structure on the array substrate covers the orthographic projection of the fourth protrusion structure on the array substrate. The second encapsulation portion connects to an adjacent first encapsulation portion. The second encapsulation portion is disposed on the side of the second pixel defining layer away from the first pixel defining layer. In a first direction, the thickness of the first encapsulation portion and the second encapsulation portion are equal, and the first direction is perpendicular to the array substrate.

[0009] According to one embodiment of this application, it further includes a first optical path adjustment layer and a second encapsulation layer. The first optical path adjustment layer is disposed on the side of the first encapsulation layer opposite to the array substrate, and the second encapsulation layer is disposed on the side of the first optical path adjustment layer opposite to the first encapsulation layer. The surface of the side of the first optical path adjustment layer opposite to the first encapsulation layer is flat and the first optical path adjustment layer is in contact with the second encapsulation layer. The refractive index of the first optical path adjustment layer is in the range of 1.6 to 2.0. The refractive index of the first optical path adjustment layer is different from the refractive index of the second encapsulation layer. The refractive index of the first optical path adjustment layer is the same as the refractive index of the first encapsulation layer.

[0010] According to one embodiment of this application, the system further includes a third encapsulation layer and an adhesive layer. The third encapsulation layer is disposed on the side of the second encapsulation layer away from the first optical path adjustment layer. The third encapsulation layer includes a sixth dimming sidewall, which encloses a dimming opening. The adhesive layer fills the dimming opening. The refractive index of the third encapsulation layer is different from that of the adhesive layer; the refractive index of the third encapsulation layer is greater than that of the adhesive layer. The plane containing the sixth dimming sidewall forms a first angle with the plane containing the array substrate. The opening direction of the first angle points away from the dimming opening. The angle range of the first angle is 50° to 80°. The orthographic projection of the dimming opening on the array substrate is offset from the orthographic projection of the light-emitting functional layer on the array substrate. There is a first gap between the orthographic projection of the dimming opening on the array substrate and the orthographic projection of the light-emitting functional layer on the array substrate. The width of the first gap ranges from 1 μm to 10 μm. The third encapsulation layer includes a plurality of dimming openings arranged in an array. The depth of the dimming opening is equal to the thickness of the second optical path adjustment layer. The depth of the dimming opening ranges from 1 μm to 5 μm. The adhesive layer is made of optically transparent adhesive.

[0011] According to one embodiment of this application, a second optical path adjustment layer is further included, disposed between the second encapsulation layer and the third encapsulation layer. The second optical path adjustment layer includes a groove, the orthographic projection of which onto the array substrate is located within the orthographic projection range of the dimming opening onto the array substrate. The third encapsulation layer includes a third encapsulation portion and a fourth encapsulation portion. The third encapsulation portion is located in the groove and extends to cover the sidewall of the groove, and the fourth encapsulation portion connects to an adjacent third encapsulation portion. The refractive index of the second optical path adjustment layer is the same as that of the second encapsulation layer. The refractive index of the second optical path adjustment layer is the same as that of the third encapsulation layer. The refractive index of the second optical path adjustment layer is between the refractive indices of the second and third encapsulation layers. In a first direction, the thickness of the third encapsulation portion and the thickness of the fourth encapsulation portion are equal.

[0012] According to one embodiment of this application, it further includes a reflective portion, which covers the first sidewall, and a second pixel defining layer covers the reflective portion; the first electrode and the reflective portion can be manufactured by the same process; the first electrode and the reflective portion are made of the same material; there is a second gap between the first electrode and the reflective portion, and the second gap is located at the inflection point where the plane where the first electrode is located and the plane where the reflective portion is located intersect; the material of the reflective portion includes a metallic material; the metallic material includes at least one of silver, gold, and copper.

[0013] According to one embodiment of this application, the plane containing the first sidewall forms a second angle with the plane containing the array substrate, the opening direction of the second angle pointing away from the direction of the light-emitting functional layer; the plane containing the first dimming sidewall forms a third angle with the array substrate, the opening direction of the third angle pointing away from the direction of the first pixel defining layer; the plane containing the second sidewall forms a fourth angle with the plane containing the array substrate, the opening direction of the fourth angle pointing away from the direction of the light-emitting functional layer; the angle of the second angle is in the range of 30° to 80°; the angle of the second angle is equal to the angle of the third angle; the angle of the second angle is equal to the angle of the fourth angle.

[0014] Secondly, this application provides a display device including the display panel of any one of claims 1 to 9.

[0015] The beneficial effects of this application are as follows: This application provides a display panel, including an array substrate; a first protrusion structure disposed on one side of the array substrate, the first protrusion structure including a first protrusion platform and a first dimming sidewall, the first protrusion platform being connected to the first dimming sidewall; a first electrode, the first electrode covering the first protrusion structure to form a second protrusion structure, the orthographic projection of the second protrusion structure on the array substrate covering the orthographic projection of the first protrusion structure on the array substrate, the second protrusion structure including a second protrusion platform and a second dimming sidewall, the plane of the second protrusion platform being parallel to the array substrate, the parallel second protrusion platform ensuring normal light emission from the frontal viewing angle of the light-emitting functional layer, the second dimming sidewall deflecting the angle of light, reducing the number of ineffective reflections of light, reducing light loss, and improving the brightness of the display product from the frontal viewing angle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 A partial structural schematic diagram of a display panel provided in an embodiment of this application. Figure 3 for Figure 2 A magnified schematic diagram of the structure within the dashed box at the location of the first protruding structure; Figure 4 A partial structural schematic diagram of another display panel provided in an embodiment of this application; Figure 5 A partial structural schematic diagram of another display panel provided in an embodiment of this application; Figure 6 A partial structural schematic diagram of a display panel provided for an embodiment of this application; Figure 7 A partial top view of a display panel provided in an embodiment of this application; Figure 8 A partial top view of another display panel provided in an embodiment of this application; Figure 9 A partial top view of a display panel provided for an embodiment of this application; Figure 10 A partial top view of a display panel provided in an embodiment of this application; Figure 11 A partial top view of another display panel provided in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures 1-Display device; 2-Display panel; 100-First light beam; 200-Second light beam; 300-Third light beam; 400-Fourth light beam; 20-Array substrate; 21-First pixel defining layer; 22-First protrusion structure; 23-First electrode; 24-Light-emitting functional layer; 25-Second pixel defining layer; 26-First encapsulation layer; 27-First optical path adjustment layer; 28-Second encapsulation layer; 29-Second electrode; 30-Third encapsulation layer; 31-Reflective portion; 32-Second optical path adjustment layer; 33-Adhesive layer; 34-Optical functional layer; 35-Cover plate; 209 - First surface; 210 - First pixel opening; 211 - First sidewall; 220 - First raised platform; 221 - First dimming sidewall; 2201 - First protruding unit; 230 - Second protruding structure; 2300 - Second protruding platform; 2302 - Second dimming sidewall; 240 - Third protrusion structure; 2400 - Third protrusion platform; 2403 - Third dimming sidewall; 290 - Fourth protrusion structure; 2900 - Fourth protrusion platform; 2904 - Fourth dimming sidewall; 260 - Fifth protrusion structure; 2600 - Fifth protrusion platform; 2605 - Fifth dimming sidewall; 250 - Second pixel opening; 252 - Second sidewall; 261 - First packaging section; 262 - Second packaging section; 3010 - Second Interval; 321 - Dimming opening; 3206 - Sixth dimming sidewall; d2 - First gap; 303 - Third package section; 304 - Fourth package section; α1 - First included angle; α2 - Second included angle; α3 - Third included angle; α4 - Fourth included angle; Y - First direction. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] Organic light-emitting diodes (OLEDs) are widely used in electronic devices such as smartphones and smartwatches. With the increasing demands for screen brightness and low power consumption in these devices, improving the light emission efficiency of OLEDs from the front viewing angle has become a key technological direction for the industry. Traditional flexible devices mostly employ planar stacked structures, resulting in low light emission efficiency from the front viewing angle. A significant amount of light is lost in waveguide mode. Existing structures are limited by the shape of the light-emitting area, making it difficult to fully utilize the reflected light from the interface between the high-refractive-index layer and the inkjet printing (IJP) layer. This leads to low light utilization and poor improvement in brightness from the front viewing angle, failing to meet the requirements for high brightness and low power consumption. Therefore, optimization and improvement of the light emission structure are urgently needed.

[0021] Firstly, according to one embodiment of this application, please refer to... Figure 1 This application provides a display panel 2, including an array substrate 20, which performs the driving task of the display panel 2; a first protrusion structure 22 disposed on one side of the array substrate 20; the first protrusion structure 22 including a first protrusion platform 220 and a first dimming sidewall 221; the first protrusion platform 220 being connected to the first dimming sidewall 221; the first protrusion structure 22 providing a pattern basis for the special design of a first electrode 23; and the first electrode 23 covering the first protrusion structure 22 to form a second protrusion structure 230. The orthographic projection of the two protrusions 230 on the array substrate 20 covers the orthographic projection of the first protrusion 22 on the array substrate 20. The second protrusion 230 includes a second protrusion platform 2300 and a second dimming sidewall 2302. The plane of the second protrusion platform 2300 is parallel to the array substrate 20. The second protrusion platform 2300 ensures normal light output of the display device 1, and the second dimming sidewall 2302 deflects the light reaching its surface, which helps to reduce the number of ineffective reflections of light on the surface of the first electrode 23 and improve the light utilization rate.

[0022] According to one embodiment of this application, the first electrode 23 can be an anode, which can provide holes for the light-emitting functional layer 24 to emit light.

[0023] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a first pixel limiting layer 21, which is disposed on one side of the array substrate 20. The first pixel limiting layer 21 includes a first sidewall 211, which surrounds a first pixel opening 210 and defines the area of ​​the light-emitting functional layer 24.

[0024] According to one embodiment of this application, the first pixel limiting layer 21 and the first protrusion structure 22 are manufactured by the same process, and the thickness of the first pixel limiting layer 21 is equal to the thickness of the first protrusion structure 22, which simplifies the process flow.

[0025] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a second pixel limiting layer 25, which is disposed on the side of the first pixel limiting layer 21 away from the array substrate 20. The orthographic projection of the second pixel limiting layer 25 on the array substrate 20 covers the orthographic projection of the first pixel limiting layer 21 on the array substrate 20. The second pixel limiting layer 25 includes a second sidewall 252, which forms a second pixel opening 250. The second pixel limiting layer 25 further defines the light-emitting area of ​​the display device 1 to avoid the risk of color mixing and ensure the display effect.

[0026] According to one embodiment of this application, please refer to Figure 1 The first protrusion structure 22 is disposed within the second pixel opening 250. By placing the first protrusion structure 22 in different positions, it can flexibly adapt to the light emission requirements of various display devices 1 and ensure the display effect.

[0027] According to one embodiment of this application, please refer to Figure 1 and Figure 4 The array substrate 20 includes a first surface 209, which is located within the second pixel opening 250 and does not overlap with the first protrusion structure 22. The first electrode 23 covers the first protrusion structure 22 and extends to cover the first surface 209, thereby realizing the irregular design of the first electrode 23 and ensuring the reliability of the device.

[0028] According to one embodiment of this application, please refer to Figure 4 The first pixel opening 210 and the second pixel opening 250 are connected to form a pixel opening. The light-emitting functional layer 24 is located inside the pixel opening. The light-emitting functional layer 24 is disposed on the side of the first electrode 23 away from the first protrusion structure 22 and extends to cover the first electrode 23 and the second sidewall 252. The light-emitting functional layer 24 covers the second protrusion structure 230 to form a third protrusion structure 240. The orthographic projection of the third protrusion structure 240 on the array substrate 20 covers the orthographic projection of the second protrusion structure 230 on the array substrate 20. The light-emitting functional layer 24 undertakes the display function of the display device 1.

[0029] According to one embodiment of this application, please refer to Figure 3 The third protrusion structure 240 includes a third protrusion platform 2400 and a third dimming sidewall 2403. The plane of the third protrusion platform 2400 is parallel to the array substrate 20, and emits light from the positive viewing angle to ensure the display effect.

[0030] According to one embodiment of this application, please refer to Figure 1The thickness of the first protrusion structure 22 is less than the sum of the thicknesses of the first pixel limiting layer 21 and the second pixel limiting layer 25. This limitation on the thickness of the first protrusion structure 22 can avoid the risk of color mixing in different light-emitting areas.

[0031] According to one embodiment of this application, please refer to Figure 7 The first raised platform 220 is rectangular in shape, which simplifies the process complexity.

[0032] According to one embodiment of this application, please refer to Figure 10 The first raised platform 220 is cross-shaped, which increases the proportion of the first dimming sidewalls 221 in the first raised structure 22, making it more conducive to adjusting the light emission from various directions within the first pixel opening 210.

[0033] According to one embodiment of this application, please refer to Figure 11 The first raised platform 220 is circular in shape, and the center of the circular ring retains the outgoing light path to ensure the vertical outgoing of the central light. The first dimming sidewall 221 can also ensure the outgoing of light.

[0034] According to one embodiment of this application, the first raised platform 220 is circular in shape. When the perimeter is equal, the circular area is the largest, and the area where the central light rays are emitted perpendicularly is the largest, thus reducing material costs.

[0035] According to one embodiment of this application, the first raised platform 220 is elliptical in shape to adapt to the light emission requirements under different pixel designs.

[0036] According to one embodiment of this application, the first protrusion structure 22 within the same second pixel opening 250 includes a plurality of first protrusion units 2201. The plurality of first protrusion units 2201 can regulate the reflected light at different spatial positions within the same second pixel opening 250, which is more conducive to reducing the number of invalid reflections of the reflected light.

[0037] According to one embodiment of this application, the shape of the first raised platform 220 also includes at least one of triangle, quadrilateral, pentagon, hexagon and polygon, and this design can flexibly adjust the number of the first dimming sidewalls 221.

[0038] According to one embodiment of this application, there is only one first dimming sidewall 221 in the same first protrusion unit 2201, which simplifies the process.

[0039] According to one embodiment of this application, in the same first protrusion unit 2201, there are only three first dimming sidewalls 221, and each first dimming sidewall 221 can be flexibly adjusted to increase the probability of deflecting the angle of reflected light.

[0040] According to one embodiment of this application, there are three or more first dimming sidewalls 221 in the same first protrusion unit 2201, which can be adapted to the needs of different display devices 11 for improving the brightness of the viewing angle.

[0041] According to one embodiment of this application, the surface of the first dimming sidewall 221 can be flat, allowing for precise control of the deflection angle.

[0042] According to one embodiment of this application, the surface of the first dimming sidewall 221 may be uneven, allowing for flexible adjustment of the light deflection angle.

[0043] According to one embodiment of this application, the shape of the first protruding platform 220 can be a combination of two or more of the above shapes, as long as it can meet the requirement of improving the brightness of the positive viewing angle.

[0044] According to one embodiment of this application, please refer to Figure 8 Multiple first protrusion units 2201 are arranged in an array within the same second pixel opening 250, simplifying the process complexity.

[0045] According to one embodiment of this application, please refer to Figure 9 Multiple first protrusion units 2201 form a row of first protrusion units 2201 within the same second pixel opening 250. At least two adjacent first protrusion units 2201 in each row of first protrusion units 2201 are misaligned, i.e. not in the same horizontal line, so that the deflection angle of light can be flexibly adjusted to adapt to the dimming requirements of different pixel designs.

[0046] According to one embodiment of this application, please refer to Figure 9 Multiple first raised units 2201 form a row of first raised units 2201 within the same second pixel opening 250, and at least two adjacent rows of first raised units 2201 are misaligned, that is, the rows of first raised units 2201 are not on the same horizontal line, thus meeting the display effect requirements of more products.

[0047] According to one embodiment of this application, the first protrusion structure 22 has only one first protrusion unit 2201, which is simple in process and highly controllable.

[0048] According to one embodiment of this application, the number and arrangement of the first protrusion unit 2201 in different pixel openings are not limited, as long as they can meet the requirement of improving the light output at the positive viewing angle.

[0049] According to one embodiment of this application, the first protrusion structure 22 can contact the second sidewall 252, and a groove is formed in the second pixel opening 250, which can also meet the requirement of the first dimming sidewall 221 deflecting light.

[0050] According to one embodiment of this application, the first protruding structure 22 and the second sidewall 252 may not be in contact, thus ensuring the reliability of the display device 1.

[0051] According to one embodiment of this application, the material of the first protrusion structure 22 includes at least one of organic and inorganic materials, which are readily available and reduce costs.

[0052] According to one embodiment of this application, the material of the first protrusion structure 22 is the same as the material of the first pixel limiting layer 21, which simplifies the process complexity.

[0053] According to one embodiment of this application, the position and size of the first protrusion unit 2201 within the second pixel opening 250 are not limited and can be flexibly adjusted according to actual product requirements.

[0054] According to one embodiment of this application, the plane of the first raised platform 220 forms an angle with the array substrate 20 to adapt to different display requirements.

[0055] According to one embodiment of this application, the plane where the first protrusion platform 220 is located is parallel to the array substrate 20, which is beneficial to subsequent process flows.

[0056] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a second electrode 29, which is disposed on the side of the light-emitting functional layer 24 away from the first electrode 23. The second electrode 29 covers the third protrusion structure 240 to form a fourth protrusion structure 290. The orthogonal projection of the fourth protrusion structure 290 on the array substrate 20 covers the orthogonal projection of the third protrusion structure 240 on the array substrate 20. The fourth protrusion structure 290 includes a fourth protrusion platform 2900 and a fourth dimming sidewall 2904. The fourth protrusion platform 2900 is connected to the fourth dimming sidewall 2904 to meet the display requirements of the display device 1.

[0057] According to one embodiment of this application, the second electrode 29 is a cathode that provides electrons to the light-emitting functional layer 24.

[0058] According to one embodiment of this application, please refer to Figure 1 and Figure 6The display panel 2 includes a first encapsulation layer 26, which includes a first encapsulation portion 261 and a second encapsulation portion 262. The first encapsulation portion 261 is disposed on the side of the second electrode 29 away from the light-emitting functional layer 24 and extends to cover the second sidewall 252. The first encapsulation portion 261 covers the fourth protrusion structure 290 to form a fifth protrusion structure 260. The orthographic projection of the fifth protrusion structure 260 on the array substrate 20 covers the orthographic projection of the fourth protrusion structure 290 on the array substrate 20. The fifth protrusion structure 260 includes a fifth protrusion platform 2600 and a fifth dimming sidewall 2605, which are connected. The second encapsulation portion 262 is connected to the adjacent first encapsulation portion 261 and is disposed on the side of the second pixel limiting layer 25 away from the first pixel limiting layer 21, protecting the display panel 2 from the risk of moisture intrusion. According to one embodiment of this application, the thickness of the first packaging portion 261 and the second packaging portion 262 is equal in the first direction Y. The first direction Y is perpendicular to the array substrate 20, which is beneficial to subsequent process flows and helps to achieve display uniformity.

[0059] According to one embodiment of this application, the first encapsulation layer 26 can be prepared by a film deposition process, and the film layer coverage is uniform, ensuring the reliability of the display device 1.

[0060] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a first optical path adjustment layer 27. The first optical path adjustment layer 27 is disposed on the side of the first encapsulation layer 26 away from the array substrate 20. The surface of the first optical path adjustment layer 27 away from the first encapsulation layer 26 is flat, which is beneficial to subsequent process flows.

[0061] According to one embodiment of this application, the first optical path adjustment layer 27 is embedded in the area of ​​the second pixel opening 250 and contacts the first encapsulation layer 26, thereby improving the adhesion between the film layers and ensuring the reliability of the display device 1.

[0062] According to one embodiment of this application, the first optical path adjustment layer 27 is made of a high refractive index material, which can reduce the driving current and reduce the power consumption of the display device 1 under the same brightness.

[0063] According to one embodiment of this application, the refractive index of the first optical path adjustment layer 27 is in the range of 1.6 to 2.0, which deflects the light at a large angle and adjusts the large-angle light to be emitted at the reflective interface, thereby improving the brightness of the light emitted at the positive viewing angle.

[0064] According to one embodiment of this application, the refractive index of the first optical path adjustment layer 27 is different from that of the second encapsulation layer 28. The refractive index difference between the two layers is used to create reflection, forming reflected light rays, such as the first light ray 100, the second light ray 200, and the third light ray 300. This improves the utilization rate of light rays at large angles, enhances display brightness and light utilization. The first light ray 100 is emitted from the light-emitting functional layer 24 at a positive angle without reflection. The second light ray 200 is reflected after being emitted and reaches the reflective part 31 before being reflected and emitted again. The third light ray 300 reaches the second dimming sidewall 2302 and is reflected. By optimizing the light emission structure, the number of ineffective reflections of the reflected light rays is effectively reduced, thereby improving the utilization rate of light.

[0065] According to one embodiment of this application, the refractive index of the first optical path adjustment layer 27 is the same as that of the first encapsulation layer 26, resulting in a small change in the angle of light emission and reducing light loss. It should be noted that the refractive index of the first optical path adjustment layer 27 can also be similar to that of the first encapsulation layer 26, as long as it does not cause unacceptable light loss.

[0066] According to one embodiment of this application, the display panel 2 further includes a second encapsulation layer 28, which is disposed on the side of the first optical path adjustment layer 27 away from the first encapsulation layer 26, and the first optical path adjustment layer 27 is in contact with the second encapsulation layer 28 to provide a reflective interface for reflecting light.

[0067] According to one embodiment of this application, the second encapsulation layer 28 can be an inkjet printing layer, which can further achieve the planarization of the film surface, which is beneficial to subsequent process flows.

[0068] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a third encapsulation layer 30. The third encapsulation layer 30 is disposed on the side of the second encapsulation layer 28 away from the first optical path adjustment layer 27. The third encapsulation layer 30 includes a sixth dimming sidewall 3206, which surrounds and forms a dimming opening 321. The refractive index of the third encapsulation layer 30 is different from that of the adhesive layer 33, so as to meet the light deflection requirements.

[0069] According to one embodiment of this application, the refractive index of the third encapsulation layer 30 is greater than that of the adhesive layer 33, which is beneficial for deflecting large-angle light and improving light utilization.

[0070] According to one embodiment of this application, the plane where the sixth dimming sidewall 3206 is located forms a first angle α1 with the plane where the array substrate 20 is located. The opening direction of the first angle α1 points away from the dimming opening 321, and the deflection angle of the light is adjusted according to the actual process requirements.

[0071] According to one embodiment of this application, please refer to Figure 1The angle range of the first included angle α1 is 50°~80°, including but not limited to 50°, 56°, 65°, 70° and 80°, to adapt to different display devices 1.

[0072] According to one embodiment of this application, the orthographic projection of the dimming opening 321 on the array substrate 20 is offset from the orthographic projection of the light-emitting functional layer 24 on the array substrate 20, thereby ensuring the display effect.

[0073] According to one embodiment of this application, please refer to Figure 1 There is a first gap d2 between the orthographic projection of the dimming opening 321 on the array substrate 20 and the orthographic projection of the light-emitting functional layer 24 on the array substrate 20, which further avoids affecting the display effect.

[0074] According to one embodiment of this application, the width of the first interval d2 is in the range of 1 μm to 10 μm, and the width of the first interval d2 includes, but is not limited to, 1 μm, 2.9 μm, 5 μm, 5.4 μm, and 10 μm, to meet the device requirements.

[0075] According to one embodiment of this application, the third encapsulation layer 30 includes a plurality of dimming openings 321, which are arranged in an array to meet the light emission requirements of different display devices 1.

[0076] According to one embodiment of this application, the depth of the dimming opening 321 is equal to the thickness of the second optical path adjustment layer 32, which simplifies the process complexity.

[0077] According to one embodiment of this application, the depth of the dimming opening 321 is in the range of 1 μm to 5 μm. The depth of the dimming opening 321 includes, but is not limited to, 1 μm, 1.8 μm, 2.5 μm, 4.2 μm, and 5 μm, to meet the device requirements.

[0078] According to one embodiment of this application, please refer to Figure 1 The display panel 2 includes an adhesive layer 33, which fills the dimming opening 321, which is beneficial to subsequent processes.

[0079] According to one embodiment of this application, the adhesive layer 33 is made of optically transparent adhesive, which has high light transmittance and ensures display effect.

[0080] According to one embodiment of this application, the refractive index of the adhesive layer 33 is less than that of the second optical path adjustment layer 32. The fourth light ray 400 enters the adhesive layer 33 after being deflected by the second optical path adjustment layer 32. The smaller refractive index of the adhesive layer 33 can make the deflection angle of the light ray smaller, reduce light loss, and improve light output efficiency.

[0081] According to one embodiment of this application, the adhesive layer 33 can only fill the dimming opening 321, which is beneficial to the thinning of the display device 1 and improves its market competitiveness.

[0082] According to one embodiment of this application, please refer to... Figure 1 The orthographic projection of the adhesive layer 33 on the array substrate 20 coincides with the orthographic projection of the cover plate 35 on the array substrate 20, which enhances the adhesion effect and avoids the risk of stress concentration.

[0083] According to one embodiment of this application, the material, type, and number of layers of the adhesive layer 33 are not limited, as long as they can meet the display and adhesion requirements.

[0084] According to one embodiment of this application, please refer to Figure 1 and Figure 2 The display panel 2 also includes a second optical path adjustment layer 32 disposed between the second encapsulation layer 28 and the third encapsulation layer 30. The second optical path adjustment layer 32 includes a groove, and the orthographic projection of the groove on the array substrate 20 is within the orthographic projection range of the dimming opening 321 on the array substrate 20. The third encapsulation layer 30 includes a third encapsulation portion 303 and a fourth encapsulation portion 304. The third encapsulation portion 303 is located in the groove and extends to cover the sidewall of the groove. The fourth encapsulation portion 304 connects to the adjacent third encapsulation portion 303, providing a basis for the patterning of the third encapsulation layer 30.

[0085] According to one embodiment of this application, the refractive index of the second optical path adjustment layer 32 is the same as that of the second encapsulation layer 28, thereby avoiding additional light loss.

[0086] According to one embodiment of this application, the refractive index of the second optical path adjustment layer 32 is the same as that of the third encapsulation layer 30, thereby avoiding additional light loss.

[0087] According to one embodiment of this application, the refractive index of the second optical path adjustment layer 32 is between the refractive index of the second encapsulation layer 28 and the refractive index of the third encapsulation layer 30. The second optical path adjustment layer 32 serves as a transition layer to further avoid additional light loss.

[0088] According to one embodiment of this application, in the first direction Y, the thickness of the third encapsulation portion 303 and the thickness of the fourth encapsulation portion 304 are equal, ensuring display uniformity.

[0089] According to one embodiment of this application, the second encapsulation layer 28 can be prepared by a deposition process, with the film layer uniformly covering and protecting the display panel 2.

[0090] According to one embodiment of this application, please refer to Figure 1 , Figure 2 and Figure 4It also includes a reflective part 31, which covers the first sidewall 211 and the second pixel limiting layer 25 covers the reflective part 31, reducing the risk of light leakage and reflecting the lateral light emitted by the light-emitting functional layer 24, thereby improving the light utilization rate.

[0091] According to one embodiment of this application, the first electrode 23 and the reflective part 31 can be manufactured simultaneously, simplifying the process complexity.

[0092] According to one embodiment of this application, the first electrode 23 and the reflective part 31 are made of the same material. Since the same material has basically the same physical and chemical properties, it is beneficial to the reliability of the display device 1.

[0093] According to one embodiment of this application, the materials of the first electrode 23 and the reflective part 31 can be different to adapt to the needs of different display devices 1.

[0094] According to one embodiment of this application, the reflectivity of the reflective portion 31 is in the range of 80% to 100%, thereby improving the light reflection capability.

[0095] According to one embodiment of this application, the material of the reflective part 31 includes a metallic material, which includes at least one of silver, gold, and copper, to meet the light reflection requirements.

[0096] According to one embodiment of this application, please refer to Figure 1 and Figure 2 There is a second gap 3010 between the first electrode 23 and the reflective part 31. The second gap 3010 is located at the inflection point where the plane where the first electrode 23 is located and the plane where the reflective part 31 is located intersect. Both the first electrode 23 and the reflective part 31 are conductive. The presence of the second gap 3010 can weaken the interface coupling effect between the first electrode 23 and the reflective part 31, reduce the accumulation of interface charge, reduce interface effect defects, and improve the reliability of the display device 1.

[0097] According to one embodiment of this application, please refer to Figure 4 The plane of the first sidewall 211 forms a second angle α2 with the plane of the array substrate 20. The opening direction of the second angle α2 points away from the direction of the light-emitting functional layer 24. The plane of the first dimming sidewall 221 forms a third angle α3 with the array substrate 20. The opening direction of the third angle α3 points away from the direction of the first pixel limiting layer 21. The plane of the second sidewall 252 forms a fourth angle α4 with the plane of the array substrate 20. The opening direction of the fourth angle α4 points away from the direction of the light-emitting functional layer 24. This simplifies the process complexity and optimizes the film coverage.

[0098] According to one embodiment of this application, the angle range of the second included angle α2 is 30° to 80°, and the angle of the second included angle α2 includes but is not limited to 30°, 31°, 37.2°, 56° and 80°, which is beneficial to the uniform coverage of the film layer in subsequent process flows.

[0099] According to one embodiment of this application, the angle of the second included angle α2 is equal to the angle of the third included angle α3, thereby increasing the coverage of the second pixel limiting layer 25 over the first pixel limiting layer 21 and simplifying the process complexity.

[0100] According to one embodiment of this application, the angle of the second included angle α2 is equal to the angle of the fourth included angle α4, which simplifies the process complexity.

[0101] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes an optical functional layer 34, which is disposed on the side of the adhesive layer 33 away from the second optical path adjustment layer 32. The optical functional layer 34 can further adjust the emitted light, optimize the display effect, and improve the customer experience.

[0102] According to one embodiment of this application, the optical functional layer 34 can be a polarizer, which has a mature process and high controllability.

[0103] According to one embodiment of this application, please refer to Figure 1 The display panel 2 also includes a cover plate 35, which helps to reduce process risks and process complexity, and improve the impact resistance of the display device 1.

[0104] According to one embodiment of this application, at least one of the first protrusion structure 22 and the second optical path adjustment layer 32 is present, which is beneficial to improving the light emission efficiency of the display device 1, and can be flexibly adjusted according to actual needs.

[0105] Secondly, this application provides a display device 1, including any of the above-mentioned display panels 2.

[0106] According to one embodiment of this application, the display device 1 includes, but is not limited to, electronic devices such as mobile terminals, vehicle-mounted display devices, portable computers, and tablet computers.

[0107] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0108] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

Claims

1. A display panel, characterized in that, include, Array substrate; A first protrusion structure is disposed on one side of the array substrate. The first protrusion structure includes a first protrusion platform and a first dimming sidewall. The first protrusion platform is connected to the first dimming sidewall. A first electrode is formed by covering the first protrusion structure to form a second protrusion structure. The orthographic projection of the second protrusion structure on the array substrate covers the orthographic projection of the first protrusion structure on the array substrate. The second protrusion structure includes a second protrusion platform and a second dimming sidewall. The plane of the second protrusion platform is parallel to the array substrate.

2. The display panel according to claim 1, characterized in that, The array also includes a first pixel defining layer, a second pixel defining layer, and a light-emitting functional layer. The first pixel defining layer is disposed on one side of the array substrate and includes a first sidewall that forms a first pixel opening. The second pixel defining layer is disposed on the side of the first pixel defining layer away from the array substrate, and the orthographic projection of the second pixel defining layer on the array substrate covers the orthographic projection of the first pixel defining layer on the array substrate. The second pixel defining layer includes a second sidewall that forms a second pixel opening. The first pixel opening and the second pixel opening are connected to form a pixel opening. A first protrusion structure is disposed within the second pixel opening. The array substrate includes a first surface that is located within the second pixel opening and does not overlap with the first protrusion structure. A first electrode covers the first protrusion structure and extends to cover the first surface. The light-emitting functional layer is located within the pixel opening and is disposed on the side of the first electrode away from the first electrode and away from the first protrusion structure, extending to cover the first electrode and the second sidewall. The light-emitting functional layer covers the second protrusion structure to form a third protrusion structure, and the orthographic projection of the third protrusion structure on the array substrate covers the orthographic projection of the second protrusion structure on the array substrate. Preferably, the third protrusion structure includes a third protrusion platform and a third dimming sidewall, wherein the plane of the third protrusion platform is parallel to the array substrate; Preferably, the thickness of the first protrusion structure is less than the sum of the thicknesses of the first pixel defining layer and the second pixel defining layer; Preferably, the first pixel defining layer and the first protrusion structure are manufactured using the same process, and the thickness of the first pixel defining layer is equal to the thickness of the first protrusion structure.

3. The display panel according to claim 2, characterized in that, The shape of the first protruding platform includes at least one of a rectangle, a cross, and a ring. Preferably, the first protrusion structure within the same second pixel opening includes multiple first protrusion units; Preferably, the plurality of first protrusion units are arranged in an array within the same second pixel opening.

4. The display panel according to claim 2, characterized in that, It also includes a second electrode and a first encapsulation layer. The second electrode is disposed on the side of the light-emitting functional layer opposite to the first electrode. The second electrode covers the third protrusion structure to form the fourth protrusion structure. The orthographic projection of the fourth protrusion structure on the array substrate covers the orthographic projection of the third protrusion structure on the array substrate. The first encapsulation layer includes a first encapsulation portion and a second encapsulation portion. The first encapsulation portion is disposed on the side of the second electrode opposite to the light-emitting functional layer and extends to cover the second sidewall. The first encapsulation portion covers the fourth protrusion structure to form the fifth protrusion structure. The orthographic projection of the fifth protrusion structure on the array substrate covers the orthographic projection of the fourth protrusion structure on the array substrate. The second encapsulation portion connects to an adjacent first encapsulation portion. The second encapsulation portion is disposed on the side of the second pixel limiting layer opposite to the first pixel limiting layer. Preferably, in the first direction, the thickness of the first encapsulation portion and the thickness of the second encapsulation portion are equal, and the first direction is perpendicular to the array substrate.

5. The display panel according to claim 4, characterized in that, It also includes a first optical path adjustment layer and a second encapsulation layer. The first optical path adjustment layer is disposed on the side of the first encapsulation layer away from the array substrate, and the second encapsulation layer is disposed on the side of the first optical path adjustment layer away from the first encapsulation layer. The surface of the first optical path adjustment layer away from the first encapsulation layer is flat and the first optical path adjustment layer is in contact with the second encapsulation layer. Preferably, the refractive index of the first optical path adjustment layer is in the range of 1.6 to 2.0; Preferably, the refractive index of the first optical path adjustment layer is different from the refractive index of the second encapsulation layer; Preferably, the refractive index of the first optical path adjustment layer is the same as the refractive index of the first encapsulation layer.

6. The display panel according to claim 5, characterized in that, It also includes a third encapsulation layer and an adhesive layer. The third encapsulation layer is disposed on the side of the second encapsulation layer away from the first optical path adjustment layer. The third encapsulation layer includes a sixth dimming sidewall, which encloses and forms a dimming opening. The adhesive layer fills the dimming opening. The refractive index of the third encapsulation layer is different from that of the adhesive layer. Preferably, the refractive index of the third encapsulation layer is greater than the refractive index of the adhesive layer; Preferably, the plane containing the sixth dimming sidewall forms a first angle with the plane containing the array substrate, and the opening direction of the first angle points away from the dimming opening direction; Preferably, the angle of the first included angle is in the range of 50° to 80°; Preferably, the orthographic projection of the dimming opening on the array substrate is offset from the orthographic projection of the light-emitting functional layer on the array substrate; Preferably, there is a first gap between the orthographic projection of the dimming opening on the array substrate and the orthographic projection of the light-emitting functional layer on the array substrate; Preferably, the width of the first interval is in the range of 1 μm to 10 μm; Preferably, the third encapsulation layer includes a plurality of dimming openings, which are arranged in an array; Preferably, the depth of the dimming opening is equal to the thickness of the second optical path adjustment layer; Preferably, the depth of the dimming opening is in the range of 1 μm to 5 μm; Preferably, the adhesive layer is made of optically transparent adhesive.

7. The display panel according to claim 6, characterized in that, It also includes a second optical path adjustment layer disposed between the second encapsulation layer and the third encapsulation layer. The second optical path adjustment layer includes a groove, and the orthographic projection of the groove on the array substrate is located within the orthographic projection range of the dimming opening on the array substrate. The third encapsulation layer includes a third encapsulation portion and a fourth encapsulation portion. The third encapsulation portion is located in the groove and extends to cover the sidewall of the groove. The fourth encapsulation portion connects to the adjacent third encapsulation portion. Preferably, the refractive index of the second optical path adjustment layer is the same as the refractive index of the second encapsulation layer; Preferably, the refractive index of the second optical path adjustment layer is the same as the refractive index of the third encapsulation layer; Preferably, the refractive index of the second optical path adjustment layer is between the refractive index of the second encapsulation layer and the refractive index of the third encapsulation layer; Preferably, in the first direction, the thickness of the third encapsulation portion and the thickness of the fourth encapsulation portion are equal.

8. The display panel according to claim 2, characterized in that, It also includes a reflective portion that covers the first sidewall, and the second pixel defining layer covers the reflective portion; Preferably, the first electrode and the reflective portion can be manufactured using the same process; Preferably, the first electrode and the reflective part are made of the same material; Preferably, there is a second gap between the first electrode and the reflective part, and the second gap is located at the inflection point where the plane where the first electrode is located and the plane where the reflective part is located intersect. Preferably, the reflective part is made of a metallic material; Preferably, the metallic material includes at least one of silver, gold, and copper.

9. The display panel according to claim 2, characterized in that, The plane containing the first sidewall forms a second angle with the plane containing the array substrate, and the opening direction of the second angle points away from the direction of the light-emitting functional layer. The plane containing the first dimming sidewall forms a third angle with the array substrate, and the opening direction of the third angle points away from the direction of the first pixel limiting layer. The plane containing the second sidewall forms a fourth angle with the plane containing the array substrate, and the opening direction of the fourth angle points away from the direction of the light-emitting functional layer. Preferably, the second included angle is in the range of 30° to 80°; Preferably, the angle of the second included angle is equal to the angle of the third included angle; Preferably, the angle of the second included angle is equal to the angle of the fourth included angle.

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

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