Driving backplane, display panel and display device

Abstract

The present application provides a driving backplane, a display panel and a display device, wherein the driving backplane includes a substrate, a functional component layer, a wiring layer and a light adjustment layer. The functional component layer is arranged on one side of the substrate, the functional component layer includes a plurality of functional layers, adjacent functional layers are insulated, each functional layer includes a plurality of functional parts, and the functional parts are patterned in the corresponding functional layer; the wiring layer is arranged on the side of the functional component layer facing away from the substrate; the light adjustment layer is arranged between the functional component layer and the wiring layer, and in the thickness direction, the orthographic projection of the light adjustment layer on the substrate at least partially overlaps with the orthographic projection of the functional parts on the substrate. The embodiments of the present application can reduce the influence of ambient light and improve the uniformity of display brightness.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a driving backplane, a display panel and a display device. Background Art

[0002] Micro-LED (Micro-Light Emitting Diode) technology refers to the technology of realizing light-emitting display by using a high-density integrated array of tiny light-emitting diodes as pixels on the backplane. Currently, Micro-LED technology has gradually become a hot research topic, and the industry is looking forward to high-quality Micro-LED products entering the market.

[0003] However, when using a Micro-LED display device, the display panel will reflect ambient light to the human eye, affecting the display effect and user experience. Summary of the invention

[0004] The embodiments of the present application provide a driving backplane, a display panel and a display device, which can reduce the influence of ambient light and improve the uniformity of display brightness.

[0005] On the one hand, an embodiment of the present application proposes a driving backplane, including a substrate substrate, a functional component layer, a routing layer, and a light adjustment layer. The functional component layer is arranged on one side of the substrate substrate, the functional component layer includes a plurality of functional layers, adjacent functional layers are insulated, each functional layer includes a plurality of functional parts, and the functional parts are patterned in the corresponding functional layer. The routing layer is arranged on the side of the functional component layer facing away from the substrate substrate. The light adjustment layer is arranged between the functional component layer and the routing layer, and in the thickness direction, the orthographic projection of the light adjustment layer on the substrate substrate overlaps at least partially with the orthographic projection of the functional part on the substrate substrate.

[0006] On the other hand, an embodiment of the present application further provides a display panel, comprising the driving backplane of the first aspect.

[0007] On the other hand, an embodiment of the present application further provides a display device, comprising the display panel of the second aspect.

[0008] The embodiments of the present application provide a driving backplane, a display panel and a display device, wherein the driving backplane includes a substrate, a functional component layer, a wiring layer and a light adjustment layer. The functional component layer includes a plurality of functional layers, each of which includes a plurality of functional parts. The light adjustment layer is arranged between the functional component layer and the wiring layer, and the light adjustment layer can absorb or block the ambient light incident from the wiring layer away from the side of the substrate, so as to avoid the reflected light from entering the functional component layer and being reflected by the functional parts in the functional layer, resulting in poor display. In the thickness direction, the orthographic projection of the light adjustment layer on the substrate substrate at least partially overlaps with the orthographic projection of the functional parts on the substrate substrate, so that the light adjustment layer can effectively absorb or block part of the ambient light, thereby improving the display brightness and color contrast, so as to improve the display brightness uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0010] Figure 1 It is a structural schematic diagram of a display panel in the prior art;

[0011] Figure 2 is a schematic structural diagram of a driving backplane provided in an embodiment of the present application;

[0012] Figure 3 This is a schematic diagram of a planar structure of a light adjustment layer in a driving backplane provided in an embodiment of the present application;

[0013] Figure 4 is a schematic structural diagram of another driving backplane provided in an embodiment of the present application;

[0014] Figure 5 is a structural schematic diagram of another driving backplane provided in an embodiment of the present application;

[0015] Figure 6 is a structural schematic diagram of another driving backplane provided in an embodiment of the present application;

[0016] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at P in the middle;

[0017] Figure 8 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0018] Fig. 9 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0019] Marking Description:

[0020] 100- driver backplane;

[0021] 10-substrate substrate; 20-functional component layer; 20a-interlayer insulating layer; 201-first metal layer; 202-second metal layer; 203-third metal layer; 21-functional component; 211-first functional component; 212-second functional component; 213-third functional component; 30-wiring layer; 31-first electrode line; 32-second electrode line; 40-light adjustment layer; 41-polarizer group; 411-first polarizer; 412-second polarizer; 42-light shielding layer; 43-grating plate; 431-grating structure;

[0022] 200-light-emitting layer; 300-cover plate;

[0023] X-thickness direction.

[0024] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0026] It should be noted that, in this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0027] The following will be combined with the attached Figure 1 To Attachment Fig. 9 Various embodiments of a driving backplane, a display panel, and a display device are described.

[0028] See also Figure 1The applicant noted that the existing display panel usually includes a driving backplane 100', a light-emitting layer 200' and a cover plate 300' arranged on the driving backplane 100'. When there is external ambient light, the ambient light enters the interior of the display panel, and the metal area in the driving backplane 100' will reflect 100% of the ambient light entering this area. Among them, the solid arrow represents the light path of the external ambient light entering the interior of the display panel, and the dotted arrow represents the light path of the metal area of ​​the driving backplane 100' reflecting part of the ambient light. At this time, the ambient light reflected by the display panel and the display light emitted by the light-emitting unit in the light-emitting layer 200' will have a crosstalk problem, affecting the normal light emission of the light-emitting unit, thereby affecting the display quality. In addition, since the ambient light reflected by the display panel is different from the color of the display light emitted by the light-emitting unit in the light-emitting layer 200, the human eye will receive the display light and the reflected ambient light at the same time, which weakens the user's viewing experience.

[0029] In order to improve the uniformity of display brightness and enhance the user viewing experience, the applicant has found that the reflection of ambient light can be weakened by improving the driving backplane structure.

[0030] Based on the above considerations, the applicant has designed a driving backplane 100 after in-depth research.

[0031] See also Figure 2 The embodiment of the present application provides a driving backplane 100, including a base substrate 10, a functional component layer 20, a wiring layer 30 and a light adjustment layer 40. The functional component layer 20 is arranged on one side of the base substrate 10, and the functional component layer 20 includes a plurality of functional layers, and adjacent functional layers are insulated. Each functional layer includes a plurality of functional parts 21, and the functional parts 21 are patterned in the corresponding functional layer. The wiring layer 30 is arranged on the side of the functional component layer 20 facing away from the base substrate 10. The light adjustment layer 40 is arranged between the functional component layer 20 and the wiring layer 30, and in the thickness direction X, the orthographic projection of the light adjustment layer 40 on the base substrate 10 and the orthographic projection of the functional part 21 on the base substrate 10 at least partially overlap.

[0032] Optionally, the material of the substrate 10 may include glass, quartz, sapphire, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), rubber, glass fiber, ceramic, other suitable materials or a combination thereof, but not limited thereto. In some embodiments, the driving backplane 100 may include a metal-glass fiber composite plate, a metal-ceramic composite plate or a printed circuit board (PCB), a flexible printed circuit (FPC), etc., but not limited thereto.

[0033] In the functional component layer 20, the functional parts 21 corresponding to each functional layer are combined to form a driving circuit for driving the corresponding light-emitting diode to emit light. The light-emitting diode can be a micro light-emitting diode (Micro-LED). Micro-LED has the advantages of low power consumption, high brightness, long life, and fast response time, so that the display panel with Micro-LED has good display performance. For Micro-LED, the driving circuit includes at least a thin film transistor, and the Micro-LED is electrically connected to the thin film transistor. Optionally, the light-emitting diode can also be a sub-millimeter light-emitting diode (Mini-LED), and the present application does not limit the type of the light-emitting diode.

[0034] Optionally, the multiple functional layers in the functional component layer 20 may include a first metal layer 201, a second metal layer 202, and a third metal layer 203, wherein the first metal layer 201 includes a plurality of first functional parts 211 distributed in a pattern, the second metal layer 202 includes a plurality of second functional parts 212 distributed in a pattern, and the third metal layer 203 includes a plurality of third functional parts 213 distributed in a pattern. Optionally, the first metal layer 201 may also be provided with a capacitor. The functional component layer 20 may be made of a conductive metal material such as aluminum, copper, or molybdenum.

[0035] Insulation is provided between adjacent functional layers. Optionally, an insulating material may be provided between two adjacent functional layers to form an interlayer insulating layer 20a, so as to avoid electrical connection interference between functional components 21 of adjacent functional layers and improve reliability. Optionally, an interlayer insulating layer 20a may also be provided between the routing layer 30 and the functional component layer 20, so as to avoid electrical connection interference between the two layers.

[0036] Optionally, an insulating material may be disposed between each functional component 21 of each functional layer to form an interlayer insulating layer 20 a , so as to avoid electrical connection interference between each functional component 21 of the same functional layer and improve reliability.

[0037] Optionally, the functional components 21 include gate lines, data lines, common power lines, etc., wherein the gate lines are used to provide scanning signals, the data lines are used to provide data signals, and the common power lines are used to provide common voltage signals. Since the functional components 21 have a high reflectivity, they are prone to reflect external ambient light, thereby reducing the display effect.

[0038] By setting a light adjustment layer 40 between the functional component layer 20 and the wiring layer 30, the ambient light entering the driving backplane 100 from the side of the wiring layer 30 away from the functional component layer 20 first passes through the wiring layer 30 and the light adjustment layer 40, and the light adjustment layer 40 is used to absorb or block the ambient light entering the light adjustment layer 40 by utilizing the characteristic of absorbing ambient light, so as to cut off the path of the ambient light continuing to enter the functional component layer 20, and prevent the functional parts 21 in the functional component layer 20 from receiving the ambient light and reflecting it out. Through the above-mentioned arrangement, the display brightness and color contrast can be improved to improve the display brightness uniformity.

[0039] Optionally, the light adjustment layer 40 may be made of a light absorbing material so as to absorb ambient light, wherein the light absorbing material may be made of chromium oxide, chromium nitride, tungsten oxide, tungsten nitride, and the like.

[0040] Furthermore, the light adjustment layer 40 can also be made of an insulating light-absorbing material. Optionally, when the light adjustment layer 40 is set to an insulating light-absorbing material, because of its insulating properties, the light adjustment layer 40 can also be set between adjacent functional parts 21 of the functional component layer 20 set close to the wiring layer 30 to replace the interlayer insulating layer 20a, which can optimize the structure, reduce a manufacturing process, reduce costs, and make the driving backplane 10 thinner and lighter to achieve better use effects.

[0041] Furthermore, in the thickness direction X, since the orthographic projection of the light adjustment layer 40 on the base substrate 10 at least partially overlaps with the orthographic projection of the functional component 21 on the base substrate 10, when ambient light is incident, a portion of the ambient light can be absorbed by the light adjustment layer 40 to weaken the reflection effect of the functional component 21 on the functional component layer 20 on the ambient light, and a mirror effect is less likely to occur. This can eliminate the influence of ambient light on the display contrast to a certain extent, thereby improving the uniformity of display brightness.

[0042] Exemplarily, the orthographic projection of the light adjustment layer 40 on the base substrate 10 completely overlaps with the orthographic projections of all functional components 21 on the base substrate 10. It can be understood that the orthographic projections of all functional components 21 on the base substrate 10 are located within the orthographic projection of the light adjustment layer 40 on the base substrate 10, so that the light adjustment layer 40 can completely block the ambient light incident on the functional components 21 in the functional component layer 20, thereby preventing the functional components 21 from reflecting the ambient light.

[0043] See also Figure 3 As an optional implementation, the light adjustment layer 40 is a continuous whole-layer structural film layer.

[0044] In the embodiment of the present application, "continuous whole-layer structural film layer" means that the light adjustment layer 40 is a connected layer structure, and its orthographic projection in the thickness direction X may include a via hole opened for passing the solder foot of the routing layer 30 or for passing through the separated functional component 21. It is only necessary to ensure that in the thickness direction X, the orthographic projection of the light adjustment layer 40 on the base substrate 10 at least partially overlaps with the orthographic projection of the functional component 21 on the base substrate 10.

[0045] During manufacturing, a whole surface of the light adjustment layer 40 can be manufactured first, and then via holes can be opened at corresponding positions. The above arrangement can simplify the manufacturing process and improve the manufacturing efficiency.

[0046] As an optional implementation, the ratio of the reflected amount Q1 of the ambient light incident from the side of the base substrate 10 close to the wiring layer 30 in the light adjustment layer 40 to the incident amount Q2 satisfies: 0:1≤Q1:Q2≤1:2.

[0047] It can be understood that the light adjustment layer 40 can absorb or block 50% to 100% of the ambient light incident from the side of the wiring layer 30 away from the base substrate 10, that is, it can reduce the risk of 50% to 100% of the ambient light entering the functional component layer 20 and being reflected by the functional component 21, thereby reducing the interference of ambient light and improving the uniformity of display brightness.

[0048] If the ratio of the reflected amount Q1 to the incident amount Q2 of the ambient light incident from the side of the base substrate 10 close to the wiring layer 30 in the light adjustment layer 40 is greater than 1:2, that is, the light adjustment layer 40 can absorb or block less than 50% of the incident ambient light, most of the ambient light will still be able to enter the functional component layer 20 and be reflected by the functional component 21, thereby failing to effectively reduce the impact of ambient light on the display brightness uniformity. Therefore, based on the above considerations, the ratio of the reflected amount Q1 to the incident amount Q2 of the ambient light incident from the side of the base substrate 10 close to the wiring layer 30 in the light adjustment layer 40 is set to: 0:1≤Q1:Q2≤1:2. Please continue to refer to Figure 2 Optionally, the ratio of the reflected amount Q1 to the incident amount Q2 of the ambient light incident from the side of the base substrate 10 close to the wiring layer 30 in the light adjustment layer 40 can be set to any value between 0:1 and 1:2, including the two end values ​​of 0:1 and 1:2.

[0049] For example, the ratio of the reflected amount Q1 of the ambient light incident on the side of the base substrate 10 close to the wiring layer 30 to the incident amount Q2 of the light adjustment layer 40 can be 0:1, 1:4, etc.

[0050] Optionally, when the ratio of the reflection amount Q1 to the incident amount Q2 is set to 0:1, that is, the light adjustment layer 40 can absorb or block all ambient light incident on the functional parts 21 in the functional component layer 20, which can maximize the display brightness uniformity.

[0051] Optionally, when the ratio of the reflected amount Q1 to the incident amount Q2 is set to 1:4, the light adjustment layer 40 can absorb or block 75% of the ambient light incident on the functional parts 21 in the functional component layer 20. Through this setting, it is possible to simplify the precision requirements for the light adjustment layer 40 on the basis of effectively reducing the impact of ambient light on the uniformity of display brightness, thereby facilitating manufacturing and facilitating mass production.

[0052] As an optional implementation, the routing layer 30 includes a first electrode line 31 and a second electrode line 32 , and the first electrode line 31 and the second electrode line 32 are respectively connected to the corresponding functional component layer 20 via holes.

[0053] Optionally, the first electrode line 31 may penetrate the light adjustment layer 40 and the interlayer insulating layer 20a to connect with the functional component 21 of the corresponding functional component layer 20. Exemplarily, the first electrode line 31 may be connected to a third functional component 213 in the third metal layer 203 through a via located on the light adjustment layer 40. Of course, it may also be connected through a non-via form. This application does not specifically limit this. In practice, the penetration method needs to be selected according to the specific application.

[0054] Similarly, the second electrode line 32 can be connected to a second functional component 212 in its corresponding second metal layer 202 through vias located on the light adjustment layer 40 and the interlayer insulating layer 20a. Of course, it can also be connected through a non-via form of a through-hole connection. The present application does not make specific limitations on this. In practice, the through-hole method needs to be selected according to the specific application.

[0055] Optionally, the first electrode line 31 can also be connected to a second functional component 212 in the second metal layer 202. It can be understood that the first electrode line 31 can be directly connected to a second functional component 212, and the first electrode line 31 can also be first connected to a third functional component 213 of the third metal layer 203, and then connected to the second functional component 212 through the third functional component 213. This application is not limited to this.

[0056] Through the above arrangement, the functional component 21 can be connected to the light emitting diode through the first electrode line 31 and the second electrode line 32 , and drive the correspondingly connected light emitting diode to emit light, thereby realizing the effectiveness of driving the backplane 10 .

[0057] As an optional implementation, the light adjustment layer 40 includes a polarizer group 41 , and the polarizer group 41 includes two or more polarizers stacked together, and the two or more polarizers have different polarization directions.

[0058] Polarizers can filter ambient light, which means they allow ambient light with a specific vibration direction to pass through while blocking incident light with other vibration directions.

[0059] Exemplarily, a polarizer with a polarization direction of 0° and a polarizer with a polarization direction of 90° are selected to form the polarizer group 41, and the two polarizers are stacked. When the ambient light is incident on the light adjustment layer 40, the polarizer with a polarization direction of 0° can block the entry of ambient light with a polarization direction other than 0°, and the polarizer with a polarization direction of 90° can block the entry of ambient light with a polarization direction other than 90°. By setting in this way, the polarizer group 41 can absorb or block all ambient light incident on the light adjustment layer 40, and can maximize the uniformity of display brightness.

[0060] The polarizer group 41 is set to be two or more polarizers stacked in a stacked manner to improve the absorption effect of ambient light incident from the light adjustment layer 40 away from the driving backplane 100, thereby reducing the ambient light incident on the functional component layer 20, reducing the amount of ambient light reflected by the functional component 21, and improving the uniformity of display brightness. In addition, the number of polarizers and polarizers with polarization direction angles can be flexibly selected according to needs to select the polarizer group 41, which can improve flexibility and versatility.

[0061] Optionally, the polarizer group 41 may include two stacked polarizers, and of course, may also include a plurality of stacked polarizers.

[0062] As an optional implementation, the polarizer group 41 includes a first polarizer 411 and a second polarizer 412 , and an angle α is formed between the polarization direction of the first polarizer 411 and the polarization direction of the second polarizer 412 , and the angle α satisfies: 45°≤α≤90°.

[0063] Optionally, the angle α formed between the vibration direction of the ambient light allowed to pass through by the first polarizer 411 and the vibration direction of the ambient light allowed to pass through by the second polarizer 412 can be any value between 45° and 90°, including two end values ​​of 45° and 90°.

[0064] Setting the range of the angle α between 45° and 90° can effectively ensure that the light adjustment layer 40 can absorb or block 50% to 100% of the ambient light incident on the functional parts 21 in the functional component layer 20, so as to better weaken the influence of ambient light and improve the uniformity of display brightness.

[0065] Exemplarily, the angle α can be selected as 85°, 90°, etc. Optionally, the angle α is set to 85°, that is, the first polarizer 411 with a vibration direction of 5° and the second polarizer 412 with a vibration direction of 80° can be selected. This setting can ensure that the light adjustment layer 40 can absorb or block more than 75% of the ambient light incident on the functional component 21 in the functional component layer 20, and can simplify the precision requirements for the first polarizer 411 and the second polarizer 412 on the basis of effectively reducing the uniformity of the display brightness caused by the ambient light, so as to facilitate manufacturing and facilitate mass production. Of course, the above is only an embodiment in which the angle α satisfies 85°. The first polarizer 411 and the second polarizer 412 with other polarization direction angles can also be selected, and the present application does not limit this.

[0066] Optionally, the angle α is set to 90°, that is, the first polarizer 411 with a vibration direction of 0° and the second polarizer 412 with a vibration direction of 90° can be selected. This setting can ensure that the light adjustment layer 40 can absorb or block all ambient light incident on the functional component 21 in the functional component layer 20, and can maximize the display brightness uniformity. Of course, the above is only an embodiment in which the angle α satisfies 90°. The first polarizer 411 and the second polarizer 412 with other polarization direction angles can also be selected, and this application is not limited to this.

[0067] Based on the above example, further, in the thickness direction X, the orthographic projection of the light adjustment layer 40 on the base substrate 10 covers the orthographic projection of all functional parts 21 on the base substrate 10, that is, the polarizer group 41 can absorb or block all ambient light incident on all functional parts 21 in all functional component layers 20, and prevent the ambient light from being reflected by the functional parts 20, thereby better improving the uniformity of display brightness.

[0068] Of course, the above example is only a feasible implementation method. The angle α between the polarization direction of the first polarizer 411 and the polarization direction of the second polarizer 412 can be flexibly set according to needs, as well as the overlapping relationship between the orthographic projection of the adjustment layer 40 on the base substrate 10 and the orthographic projection of the functional component 21 on the base substrate 10 in the thickness direction, so as to flexibly improve the performance of the driving backplane 10 according to needs.

[0069] See also Figure 4As an optional implementation, the polarizer group 41 directly covers at least a portion of the functional component layer 20 adjacent to the routing layer 30, and the functional parts 21 in the functional component layer 20 are insulated by at least one polarizer.

[0070] Since the polarizer group 41 has insulating properties, it can also serve as an interlayer insulating layer 20a set between the routing layer 30 and the adjacent functional component layer 20 to optimize the structure, reduce a manufacturing process, reduce costs, and make the driving backplane 10 thinner and lighter to achieve better use effects.

[0071] Optionally, in order to ensure that the third functional elements 213 are insulated from each other, at least one polarizer is disposed between adjacent third functional elements 213 to replace the interlayer insulating layer 20a to prevent electrical connection problems. Optionally, one polarizer is disposed between adjacent third functional elements 213, and two polarizers may also be disposed.

[0072] During production, the required number of full-surface polarizers can be produced first, and then vias passing through the solder feet of the routing layer 30 can be opened at the corresponding positions, and then vias separating the third functional components 213 can be opened for the polarizers arranged between adjacent third functional components 213. The production process is simple and the cost is reduced. On the basis of ensuring the uniformity of the display brightness, the lightweight design of the driving backplane 10 can also be achieved.

[0073] See also Figure 5 As an optional embodiment, the light adjustment layer 40 includes an insulating shading layer 42, which directly covers at least a portion of the functional component layer 20 adjacent to the routing layer 30, and the functional parts 21 in the functional component layer 20 are insulated by the shading layer 42.

[0074] Optionally, the light shielding layer 42 can be made of a black resin material. Of course, the light shielding layer 42 can also be made of other materials that can absorb light well. Exemplarily, the light shielding layer 42 is made of black resin, which can reduce manufacturing costs.

[0075] The light adjustment layer 40 is set as an insulating shading layer 42. Because of its insulating property, it can directly cover at least part of the functional component layer 20 adjacent to the wiring layer 30, thereby reducing the interlayer insulating layer 20a set between the wiring layer 30 and the adjacent functional component layer 20, so as to optimize the structure, reduce a manufacturing process, reduce costs, and make the driving backplane 10 thinner and lighter to achieve better use effects.

[0076] See also Figure 6 and Figure 7As an optional embodiment, the light adjustment layer 40 includes a grating sheet 43, the grating sheet 43 includes a plurality of grating structures 431, the gap d1 between two adjacent grating structures 431 satisfies: 0.1μm≤d1≤5μm, and the width d2 of each of the grating structures satisfies: 0.01μm≤d2≤0.5μm.

[0077] The light adjustment layer 40 may include a grating sheet 43, and the grating sheet 43 includes a plurality of spaced grating structures 431. It can be understood that the light adjustment layer 40 having the grating structures 431 has the characteristic of absorbing incident ambient light to reduce reflection of the ambient light.

[0078] Through the above configuration, the grating sheet 43 in the light adjustment layer 40 absorbs the external ambient light, thereby reducing the degree of reflection of the ambient light, thereby improving the uniformity of display brightness. Optionally, the grating sheet 43 can be a simple grating, a multi-step grating or a holographic grating.

[0079] To further enhance the ability to absorb ambient light, the color of the grating sheet 43 can be set to black, or other relatively dark colors. Optionally, the cross-sectional shape of the grating structure 431 along the length direction perpendicular to the grating sheet 43 can be one of a rectangle, a rhombus, and a triangle.

[0080] Optionally, the plurality of grating structures 431 may be arranged at equal intervals along a specific direction. Of course, the plurality of grating structures 431 may be arranged at unequal intervals along a specific direction.

[0081] Optionally, the gap d1 between two adjacent grating structures 431 can be set to any value between 0.1 μm and 5 μm, including 0.1 μm and 5 μm. Optionally, the width d2 of each grating structure 431 can be set to any value between 0.01 μm and 0.5 μm, including 0.01 μm and 0.5 μm.

[0082] It can be understood that by setting the gap d1 to satisfy: 0.1μm≤d1≤5μ and the width d2 to satisfy: 0.01μm≤d2≤0.5μm, it can effectively ensure that the light adjustment layer 40 can absorb or block 50% to 100% of the ambient light incident on the functional parts 21 in the functional component layer 20, so as to better weaken the influence of ambient light and improve the uniformity of display brightness.

[0083] Exemplarily, the gap d1 between two adjacent grating structures 431 can be set to 0.1 μm, and the width d2 of each grating structure 431 can be set to 0.5 μm, or, the gap d1 between two adjacent grating structures 431 can be set to 0.15 μm, and the width d2 of each grating structure 431 can be set to 0.45 μm, so that the grating sheet 43 can better absorb ambient light and can achieve the effect of uniformly absorbing ambient light, thereby improving reliability.

[0084] The gap d1 between two adjacent grating structures 431 and the width d2 of the grating structure 431 can be arbitrarily matched within the range according to requirements, and the present application does not limit them.

[0085] In a second aspect, an embodiment of the present application further provides a display panel, comprising any one of the aforementioned driving backplanes 100 .

[0086] See also Figure 8 A display panel provided in an embodiment of the present application includes a driving backplane 100. The display panel also includes a light-emitting layer 200 and a cover plate 300 disposed on the driving backplane 100. The light-emitting layer 200 includes a plurality of light-emitting diodes 210. The driving backplane 100 is used to drive the plurality of light-emitting diodes 210 to emit light. The light-emitting diodes 210 can be used as the light source required by the display panel.

[0087] Optionally, the light emitting diode 210 may include a plurality of light emitting diodes 210 of different colors, such as a red light emitting diode 210a, a green light emitting diode 210b, and a blue light emitting diode 210c, which can respectively emit primary color light of red, green, and blue. Of course, the light emitting diodes 210 provided in the embodiment of the present application can also all be set to light emitting diodes 210 of the same color to emit light of the same color, for example, the light emitting colors of all the light emitting diodes 210 are white or blue, and the present application does not limit this.

[0088] Optionally, the cover plate 300 can be a light-transmitting cover plate or a color filter substrate. Of course, the cover plate 300 can also be a thin film package or a protective layer with protective and supporting effects, and this protective layer has the effect of a flat layer, which can fill the gaps in the display panel to make the surface of the display panel flat, and can also avoid water vapor interference to achieve a protective effect.

[0089] When the display panel is in use, the side of the cover plate 300 facing away from the driving back plate 100 can be used as the display surface, and the external ambient light will penetrate the cover plate 300 into the driving back plate 100. Since the light adjustment layer 40 is arranged on the side of the driving back plate 100 close to the cover plate 300, the light adjustment layer 40 can absorb or block the external ambient light incident from the outside, so as to weaken the reflection effect of the metal wiring in the driving back plate 100 on the ambient light, thereby avoiding the interference between the reflected light and the light emitted by the light-emitting diode 210, and the problem of poor display effect of the display panel caused by the reflected light.

[0090] Since the light adjustment layer 40 is arranged between the functional component layer 20 and the wiring layer 30, the risk of the light emitted by the light-emitting diode 210 in the light-emitting layer 200 being absorbed by the light adjustment layer 40 can be avoided. That is, the light adjustment layer 40 only absorbs or blocks the ambient light emitted from the wiring layer 30 away from the side of the driving backplane 100, and will not affect the normal light emission effect of the light-emitting layer 200, thereby ensuring the display brightness uniformity of the display panel.

[0091] Because the driving backplane 100 provided in the embodiment of the present application has the characteristic of reducing the influence of ambient light and thus improving the uniformity of display brightness, the display panel using this driving backplane 100 can reduce the interference problem of ambient reflected light entering the user's field of view, thereby improving the contrast of the display panel and the uniformity of display brightness, increasing the service life of the display panel, and improving the user's viewing experience.

[0092] See also Fig. 9 In a third aspect, an embodiment of the present application further provides a display device, comprising any one of the display panels described above.

[0093] Optionally, the display device may include a portion of elements of a flexible display device, a touch display device, a curved display device, or a free shape display device, but the present application is not limited thereto.

[0094] Optionally, the display device may be a mobile phone, a tablet computer, a television, a game console, or any wearable device or apparatus. The present application does not set any restrictions on the specific type of the display device, and it may be flexibly selected according to actual conditions.

[0095] Because the display panel provided in the embodiment of the present application can improve the uniformity of contrast and display brightness, the display quality, performance and market competitiveness of the display device using the display panel can be improved.

[0096] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0097] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A driving backplane, characterized in that: include: substrate substrate; A functional component layer is arranged on one side of the substrate, the functional component layer includes a plurality of functional layers, adjacent functional layers are insulated, each functional layer includes a plurality of functional parts, and the functional parts are distributed in a pattern in the corresponding functional layer; A wiring layer is arranged on a side of the functional component layer facing away from the substrate, the wiring layer includes a first electrode line and a second electrode line, the first electrode line and the second electrode line are respectively connected to the functional layer corresponding to themselves through via holes, A light adjustment layer is disposed between the functional component layer and the wiring layer, wherein in a thickness direction, an orthographic projection of the light adjustment layer on the base substrate at least partially overlaps with an orthographic projection of the functional component on the base substrate; The light adjustment layer includes an insulating light shielding layer, the light shielding layer directly covers at least a portion of the functional layer adjacent to the wiring layer, and the functional components in the functional layer are insulated by the light shielding layer.

2. The driving backplane according to claim 1, characterized in that: The light adjustment layer is a continuous whole-layer structural film layer.

3. The driving backplane according to claim 1, characterized in that: The ratio of the reflected amount Q1 and the incident amount Q2 of the ambient light incident from the side of the base substrate close to the wiring layer on the light adjustment layer satisfies: 0:1≤Q1:Q2≤1:

2.

4. The driving backplane according to claim 1, characterized in that: The light adjustment layer includes a polarizer group, and the polarizer group includes two or more polarizers that are stacked and arranged, and the two or more polarizers have different polarization directions.

5. The driving backplane according to claim 4, characterized in that: The polarizer group includes a first polarizer and a second polarizer, and an angle α is formed between the polarization direction of the first polarizer and the polarization direction of the second polarizer, and the angle α satisfies: 45°≤α≤90°.

6. The driving backplane according to claim 4, characterized in that: The polarizer group directly covers at least a portion of the functional layer adjacent to the wiring layer, and the functional components in the functional layer are insulated by at least one polarizer.

7. The driving backplane according to claim 1, characterized in that: The light adjustment layer includes a grating sheet, and the grating sheet includes a plurality of grating structures. The gap d1 between two adjacent grating structures satisfies: 0.1 μm≤d1≤5 μm, and the width d2 of each grating structure satisfies: 0.01 μm≤d2≤0.5 μm.

8. A display panel, characterized in that: Comprising a driving backplane as described in any one of claims 1 to 7.

9. A display device, characterized in that: Comprising the display panel as claimed in claim 8.

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