Display panel, manufacturing method thereof, and electronic device

Abstract

The present disclosure provides a display panel, a preparation method thereof, and an electronic device. The display panel forms different anode patterns when setting the anode layer, so that a second anode pattern used for shielding is connected to a conductive light-emitting functional layer, providing a static discharge path for the second anode pattern to prevent static electricity from affecting the working state of the second transistor; at the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a manufacturing method thereof, and an electronic device. Background Art

[0002] As technology matures, AMOLED (Active-matrix organic light-emitting diode) display panels are increasingly used in various electronic devices. Figure 1 The schematic diagram of the hierarchical structure of a conventional AMOLED display panel is shown. In the AMOLED display panel, the TFT (Thin Film Transistor, corresponding to the TFT) used for pixel light emission control is removed. Figure 1 In addition to the TFT marked as A in the figure, the thin film transistor layer also includes TFTs for realizing other functions (corresponding to Figure 1 When the ambient light from the outside world shines into the panel, the anode layer on TFT A acts as a shield, while TFT B is prone to increase its Ioff under strong light stimulation, resulting in display flicker at low frame rates. Therefore, in conventional technology, the metal of the anode layer is often used as a shield for TFT B to avoid the low-frequency flicker problem. In actual implementation, since the anode metal used for shielding cannot be in a floating state, otherwise the electric field formed by the accumulated static electricity will affect the TFT channel, the anode metal used for this purpose must be connected to other non-floating circuits. If such a connection line is too long or too large, it will form a capacitor with other metal layers at the bottom of the panel, forming an additional load (RC loading), such as Figure 1 The capacitor mark is shown in the figure. Summary of the Invention

[0003] The purpose of the embodiments of the present disclosure is to provide a display panel and a method for manufacturing the same, and an electronic device, so as to solve the problem of increased load caused by the provision of shielding anode metal in the prior art.

[0004] The embodiments of the present disclosure adopt the following technical solutions: a display panel comprising: a substrate; a thin film transistor layer arranged on a surface of one side of the substrate, the thin film transistor layer comprising at least a plurality of first transistors and a plurality of second transistors; an anode layer arranged on a surface of the thin film transistor layer away from a side of the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode pattern and the second anode pattern being insulated from each other, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, and the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate; a pixel definition layer comprising a plurality of first openings and a plurality of second openings penetrating the pixel definition layer, the orthographic projection of the first opening on the substrate having an overlapping portion with the orthographic projection of the first anode pattern on the substrate, and the orthographic projection of the second opening on the substrate having an overlapping portion with the orthographic projection of the second anode pattern on the substrate; a light-emitting functional layer, the light-emitting functional layer covering the pixel definition layer, and the light-emitting functional layer being connected to the first anode pattern based on the first opening, and the light-emitting functional layer being connected to the second anode pattern based on the second opening.

[0005] In some embodiments, the light-emitting functional layer includes at least a light-emitting layer and a cathode layer which are sequentially arranged in a direction from the pixel definition layer to the anode layer.

[0006] In some embodiments, the anode layer is made of any one of magnesium, aluminum, and zinc or an alloy of multiple metals.

[0007] In some embodiments, the light-emitting layer includes a third opening that passes through the light-emitting layer, and the median projection of the third opening on the substrate overlaps with the orthographic projection of the second opening on the substrate, so that the cathode layer is connected to the second anode pattern based on the third opening.

[0008] The embodiment of the present disclosure also provides a display panel, comprising at least: a substrate; a thin film transistor layer arranged on a surface of one side of the substrate, the thin film transistor layer comprising at least a plurality of first transistors and a plurality of second transistors; an anode layer arranged on a surface of the thin film transistor layer away from a side of the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode pattern and the second anode pattern being insulated from each other, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate, and the second anode pattern is connected to a preset signal; a pixel definition layer, the pixel definition layer comprising a plurality of first openings penetrating the pixel definition layer, the orthographic projection of the first opening on the substrate having an overlapping portion with the orthographic projection of the first anode pattern on the substrate; a light-emitting functional layer, the light-emitting functional layer covering the pixel definition layer, and the light-emitting functional layer being connected to the first anode pattern based on the first opening.

[0009] In some embodiments, the preset signal includes at least one of the following: a reset voltage signal and an operating voltage signal.

[0010] In some embodiments, the second transistor includes at least the following layers arranged in sequence: a semiconductor layer, a gate insulating layer, a gate layer, an interlayer insulating layer, a metal layer, and a planar layer; the metal layer includes at least a first metal pattern and a second metal pattern, the first metal pattern and the second anode metal are insulated, the planar layer includes a fourth opening passing through the planar layer, the orthographic projection of the fourth opening on the substrate has an overlapping portion with the orthographic projection of the second metal pattern and the second anode pattern on the substrate, and the second anode pattern is connected to the second metal pattern based on the fourth opening.

[0011] An embodiment of the present disclosure also provides a method for preparing a display panel, comprising: providing a substrate, preparing a thin film transistor layer on a surface of one side of the substrate, the thin film transistor layer including at least a plurality of first transistors and a plurality of second transistors; preparing an anode layer on a surface of the thin film transistor layer away from the substrate, the anode layer including at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode pattern and the second anode pattern being insulated from each other, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, and the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate; preparing a pixel definition layer on a surface of the anode layer away from the thin film transistor, and providing a plurality of first openings and a plurality of second openings in the pixel definition layer, the orthographic projection of the first opening on the substrate having an overlapping portion with the orthographic projection of the first anode pattern on the substrate, and the orthographic projection of the second opening on the substrate having an overlapping portion with the orthographic projection of the second anode pattern on the substrate; preparing a light-emitting functional layer on a surface of the pixel definition layer away from the anode layer, so that the light-emitting functional layer is connected to the first anode pattern based on the first opening, and the light-emitting functional layer is connected to the second anode pattern based on the second opening.

[0012] An embodiment of the present disclosure also provides a method for preparing a display panel, which is characterized by comprising: providing a substrate, preparing a thin film transistor layer on a surface of one side of the substrate, the thin film transistor layer comprising at least a plurality of first transistors and a plurality of second transistors; preparing an anode layer on a surface of the thin film transistor layer away from the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode pattern and the second anode pattern being insulated, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate, and the second anode pattern is connected to a preset signal; preparing a pixel definition layer on a surface of the anode layer away from the thin film transistor, and opening a plurality of first openings in the pixel definition layer, the orthographic projection of the first opening on the substrate having an overlapping portion with the orthographic projection of the first anode pattern on the substrate; preparing a light-emitting functional layer on a surface of the pixel definition layer away from the anode layer, so that the light-emitting functional layer is connected to the first anode pattern based on the first opening.

[0013] An embodiment of the present disclosure further provides an electronic device, which at least includes the display panel as described above.

[0014] The beneficial effects of the embodiments of the present disclosure are: by forming different anode patterns when setting the anode layer, the second anode pattern used for shielding is connected to the conductive light-emitting functional layer, providing an electrostatic discharge path for the second anode pattern, thereby preventing static electricity from affecting the working state of the second transistor; at the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 Schematic diagram of the hierarchical structure of a conventional AMOLED display panel;

[0017] Figure 2 Schematic diagram of the hierarchical structure of the display panel in the first embodiment of the present disclosure;

[0018] Figure 3 A schematic top view of the anode layer design in the first embodiment of the present disclosure;

[0019] Figure 4 Schematic diagram of another hierarchical structure of the display panel in the first embodiment of the present disclosure;

[0020] Figure 5 Schematic diagram of the hierarchical structure of the display panel in the second embodiment of the present disclosure;

[0021] Figure 6 is a flow chart of a method for preparing a display panel in the third embodiment of the present disclosure;

[0022] Figure 7 4 is a flow chart of a method for manufacturing a display panel in the fourth embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] Various aspects and features of the present disclosure are described herein with reference to the accompanying drawings.

[0024] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0026] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0027] It should also be understood that although the present disclosure has been described with reference to certain specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features of the claims and are therefore within the scope of protection defined thereby.

[0028] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0029] Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant detail. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but rather serve merely as a basis and representative basis for teaching those skilled in the art to variously employ the present disclosure with substantially any suitable detailed structure.

[0030] This description may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," each of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0031] As technology matures, AMOLED display panels are increasingly used in various electronic devices. Figure 1 The schematic diagram of the hierarchical structure of a conventional AMOLED display panel is shown. In the AMOLED display panel, the TFT (corresponding to the TFT) used for pixel light emission control is removed. Figure 1 In addition to the TFT marked as A in the figure, the thin film transistor layer also includes TFTs for realizing other functions (corresponding to Figure 1When the ambient light from the outside world shines into the panel, the anode layer on TFT A acts as a shield, while TFT B is prone to increase its Ioff under strong light stimulation, resulting in display flicker at low frame rates. Therefore, in conventional technology, the metal of the anode layer is often used as a shield for TFT B to avoid the low-frequency flicker problem. In actual implementation, since the anode metal used for shielding cannot be in a floating state, otherwise the electric field formed by the accumulated static electricity will affect the TFT channel, the anode metal used for this purpose must be connected to other non-floating circuits. If such a connection line is too long or too large, it will form a capacitor with other metal layers at the bottom of the panel, forming an additional load (RC loading), such as Figure 1 The capacitor mark is shown in the figure.

[0032] In order to solve the above problems, a first embodiment of the present disclosure provides a display panel, which may be an AMOLED or other TFT-controlled display panel. Figure 2 FIG. 4 shows a schematic diagram of the hierarchical structure of the display panel in this embodiment. Figure 2 As shown, the display panel at least includes a substrate 10, a thin film transistor layer 20, an anode layer 30, a pixel definition layer 40 and a light-emitting function layer 50 arranged in sequence; wherein the substrate 10 can be directly prepared by selecting a material with supporting performance, or directly made of conventional materials in AMOLED panels; the thin film transistor layer 20 mainly includes a layer corresponding to the TFT structure, and the thin film transistors contained in the layer can be divided into a plurality of first transistors 21 for pixel light control and a plurality of second transistors 22 for realizing other functions according to their functions. The specific layered structures of the two transistors can directly use conventional designs, for example Figure 2 The thin film transistors shown are all TFTs with a double-layer gate structure. Other TFT structural designs may also be used in actual design, and this embodiment does not limit this.

[0033] In order to shield the second transistor 22, an anode layer 30 is prepared on the surface of the thin-film transistor layer 20 away from the substrate 10. At least two mutually insulated patterns are formed on the surface of the thin-film transistor layer 20, namely a first anode pattern 31 used as a pixel anode and a second anode pattern 32 used as a shielding metal for the second transistor 22. The two are arranged on the same layer and insulated from each other to avoid the formation of excessively long metal lines that affect the load size. Specifically, the orthographic projection of the first anode pattern 31 on the substrate 10 covers the orthographic projection of the first transistor 21 on the substrate, shielding the first transistor 21 while serving as an anode. The orthographic projection of the second anode pattern 32 on the substrate 10 covers the orthographic projection of the second transistor 22 on the substrate, ensuring that the second anode pattern 32 completely covers the second transistor 22, avoiding the influence of external ambient light on the working state of the second transistor 22. It should be noted that the shape and size of the first anode pattern 31 can be set according to the shape and size of the pixel to be set at the corresponding position, while the shape of the second anode pattern 32 is set according to the shape and size of the second transistor 22. When the shape and size of the second transistor 22 are different, the shape and size of the second anode pattern 32 corresponding to the second transistor 22 will also be different. In actual implementation, the anode layer 30 can be prepared using any one or more alloys formed from metals such as magnesium, aluminum, and zinc. The preparation process and the parameters of the final pattern can directly use conventional designs. As long as the anode layer 30 is a light-proof layer, a light-shielding effect can be achieved.

[0034] The pixel definition layer 40 is primarily used for setting pixel openings to distinguish pixels of different colors and locations. It also includes a plurality of first openings 61 and a plurality of second openings 62. The first openings 61 are used to define pixels, and their orthographic projections on the substrate 10 overlap with those of the first anode pattern 31. The second openings 62 are primarily used to prevent the second anode pattern 32 from floating. Their orthographic projections on the substrate 10 overlap with those of the second anode pattern 32. Furthermore, the shape and size of the first openings 61 can be determined based on the shape and size of the pixels to be positioned at the corresponding locations. Because further hierarchical structures are to be fabricated within the first openings to achieve pixel luminescence, the first openings 61 can be as large as possible without exceeding the area corresponding to the first anode pattern 31, thereby achieving a larger aperture ratio for the display panel and achieving a better display quality. The second openings 62, on the other hand, only need to ensure stable connection between subsequent layers and the second anode pattern 32. The specific configuration can be based on the shape and size of the second transistor 22, and this embodiment is not limited thereto.

[0035] Figure 3A schematic top view of the anode layer 30 is shown, wherein the area marked with R, G, and B is the area where the first transistor 21 is located (the actual first transistor 21 is blocked by the anode layer. Figure 3 The second transistor 22 is set between the R pixel and the B pixel and above the B pixel according to actual needs, and can also be set at other necessary positions; the area surrounded by solid lines within the range of the first anode pattern 31 and the second anode pattern 32 is the corresponding first opening 61 and second opening 62.

[0036] A light-emitting functional layer 50 is further provided on the side of the pixel definition layer 40 away from the anode layer 30, which mainly includes a light-emitting layer made of a light-emitting material and a cathode layer formed of a conductive material. Figure 2 The specific hierarchical structure of the light-emitting layer and the cathode layer is not shown, and in actual implementation, the light-emitting functional layer 50 may also include other functional layers such as an electron transport layer, a hole blocking layer, and a hole transport layer. The specific design can be based on the actual light-emitting structure of the AMOLED display panel, and this embodiment will not be described in detail here. Generally speaking, the light-emitting functional layer 50 is a hierarchical structure prepared on the front side, so after preparation, it can be connected to the first anode pattern 31 based on the first opening, and then form a complete light-emitting structure at the corresponding position, which can make the display panel present a display image when it is controlled to light up; at the same time, the light-emitting functional layer 50 is also connected to the second anode pattern 32 based on the second opening 62. Based on the conductive properties of the light-emitting functional layer 50, the second anode pattern 32 for light shielding that was originally floating can be connected to the first anode pattern 31 at the light-emitting position to provide an electrostatic discharge path for the second anode pattern 32, so as to avoid the accumulation of static electricity in the second anode pattern 32 and the impact on the working state of the second transistor 22. At the same time, combined with Figure 2 It can be seen that compared with Figure 1 The distance between the anode layer (Anode) and the metal layer (SD) contained in the thin film transistor layer below, Figure 2 The distance between the middle light-emitting functional layer 50 and the SD below is greater, so even if a capacitor is formed, its capacitance value is smaller, thereby achieving the purpose of reducing the load of the display panel and saving the power consumption of the display panel.

[0037] In some embodiments, as Figure 4As shown, the light-emitting functional layer 50 includes a light-emitting layer 51 and a cathode layer 52. The cathode layer 52 is generally a metal layer with light-transmitting properties. To achieve good light-transmitting performance, the thickness of the cathode layer 52 is minimized. However, in this case, the internal voltage drop of the cathode layer 52 increases accordingly, which can adversely affect the display effect of the display panel. Therefore, in this embodiment, a third opening 63 can be provided in the light-emitting layer 51, penetrating the light-emitting layer 51. The orthographic projection of the third opening 63 on the substrate 10 coincides with the orthographic projection of the second opening 62 on the substrate 10, so that the cathode layer 52 is connected to the second anode pattern 32 through the third opening 63. The second anode pattern 32 is then used as an auxiliary electrode for the cathode layer, thereby reducing the internal voltage drop of the cathode layer 52, thereby improving the display effect and further reducing the energy consumption of the display panel.

[0038] This embodiment forms different anode patterns when setting the anode layer, so that the second anode pattern used for shielding is connected to the conductive light-emitting functional layer, providing a static discharge path for the second anode pattern to prevent static electricity from affecting the working state of the second transistor; at the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel.

[0039] The second embodiment of the present disclosure provides another implementation of a display panel, and its hierarchical structure diagram is shown as follows: Figure 5 As shown. Figure 2 Similarly, Figure 5 The display panel shown also includes a layered structure such as a substrate 10, a thin film transistor layer 20, an anode layer 30, a pixel definition layer 40 and a light-emitting functional layer 50 arranged in sequence. The structural arrangement of the substrate 10 and the thin film transistor layer 20 are the same as the structures of the corresponding layers in the display panel provided in the first embodiment of the present disclosure, and are not repeated here. As for the anode layer 30, it also has a first anode pattern 31 used as a pixel anode and a second anode pattern 32 used as a shielding metal for the second transistor 22. The two are arranged in the same layer and insulated from each other. Their design positions and shapes are the same as those in the first embodiment. The difference is that the second anode pattern 32 in this embodiment is connected to a preset signal, which is a signal with a stable voltage, such as a reset signal, an operating signal of other devices in the display panel, etc., and a stable voltage is provided to the second anode pattern 32 through the preset signal to prevent its accumulated static electricity from affecting the working state of the second transistor 22.

[0040] In this embodiment, the second anode pattern 32 improves the floating state using a preset signal, and the corresponding pixel definition layer 40 only needs to open the first opening 61. The light-emitting functional layer 50 is also only connected to the first anode pattern 31 to achieve the normal display function of the pixel. The setting position of the first opening 61 is the same as that of the first embodiment and will not be repeated here.

[0041] like Figure 5 As shown, the second transistor 22 includes a semiconductor layer ploy, gate insulating layers GI1 and GI2, gate layers gate1 and gate2, an interlayer insulating layer ILD, a metal layer SD and a flat layer PLN, which are arranged in sequence, and the second anode pattern 32 is correspondingly arranged on the flat surface of the PLN; wherein the metal layer SD includes at least a first metal pattern SD1 and a second metal pattern SD2 serving as the source and drain of the second transistor 22. When realizing the connection between the second anode pattern 32 and the preset signal, the second metal pattern SD2 can be used as a jump. For example, a fourth opening 64 is opened in the flat layer and passes through the flat layer, wherein the orthographic projection of the fourth opening 64 on the substrate 10 and the orthographic projections of the second metal pattern SD2 and the second anode pattern 32 on the substrate 10 have overlapping parts, so as to realize the connection between the second anode pattern 32 and the second metal pattern SD2 through the fourth opening 64, and to improve the floating state of the second anode pattern 32 by applying a preset signal to the second metal pattern SD2.

[0042] This embodiment forms different anode patterns when setting the anode layer, and applies a stable voltage to the second anode pattern used for shielding, providing an electrostatic discharge path for the second anode pattern, thereby preventing static electricity from affecting the working state of the second transistor. At the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, so even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel. It should be noted that when applying a preset signal to the second anode pattern, additional circuit layout may be caused, and additional metal wiring is likely to form additional load between the TFT metal layer. Therefore, when designing a display panel using the solution of this embodiment, the circuit design should be considered as a whole to avoid the design and implementation of the second anode pattern causing additional load.

[0043] The third embodiment of the present disclosure provides a method for preparing a display panel, which is mainly used to prepare the display panel provided by the first embodiment of the present disclosure. The preparation process is as follows: Figure 6 As shown, it mainly includes the following steps:

[0044] S31, providing a substrate, and forming a thin film transistor layer on a surface of one side of the substrate, wherein the thin film transistor layer includes at least a plurality of first transistors and a plurality of second transistors;

[0045] S32, forming an anode layer on a surface of the thin film transistor layer away from the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode patterns and the second anode patterns being insulated from each other, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, and the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate;

[0046] S32, forming a pixel definition layer on a surface of the anode layer away from the thin film transistor, and forming a plurality of first openings and a plurality of second openings in the pixel definition layer, wherein the orthographic projections of the first openings on the substrate overlap with the orthographic projections of the first anode pattern on the substrate, and the orthographic projections of the second openings on the substrate overlap with the orthographic projections of the second anode pattern on the substrate;

[0047] S32, preparing a light-emitting functional layer on a surface of the pixel definition layer away from the anode layer, so that the light-emitting functional layer is connected to the first anode pattern based on the first opening, and the light-emitting functional layer is connected to the second anode pattern based on the second opening.

[0048] In some embodiments, the light-emitting functional layer includes at least a light-emitting layer made of a light-emitting material and a cathode layer formed of a conductive material. It may also include other functional layers such as an electron transport layer, a hole blocking layer, and a hole transport layer. The specific preparation method can be directly carried out using existing technologies. In addition, after the light-emitting layer is prepared, a third opening can be opened in it. The middle projection of the third opening on the substrate overlaps with the orthographic projection of the second opening on the substrate. The cathode layer is connected to the second anode pattern through the third opening, and the second anode pattern is used as an auxiliary electrode for the cathode layer, thereby reducing the cathode voltage drop and saving power consumption of the display panel.

[0049] In some embodiments, the preparation material of the anode layer can be any one or more alloys formed by metals such as magnesium, aluminum, zinc, etc., or other materials that can achieve the same effect can also be used. The preparation process and the parameters for the final pattern formation can directly use conventional designs. As long as the anode layer is ensured to be a light-proof layer, the shading effect can be achieved.

[0050] This embodiment forms different anode patterns when setting the anode layer, so that the second anode pattern used for shielding is connected to the conductive light-emitting functional layer, providing a static discharge path for the second anode pattern to prevent static electricity from affecting the working state of the second transistor; at the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel.

[0051] The third embodiment of the present disclosure provides a method for preparing a display panel, which is mainly used to prepare the display panel provided by the second embodiment of the present disclosure. The preparation process is as follows: Figure 7 As shown, it mainly includes the following steps:

[0052] S41, providing a substrate, and forming a thin film transistor layer on a surface of one side of the substrate, wherein the thin film transistor layer includes at least a plurality of first transistors and a plurality of second transistors;

[0053] S42, preparing an anode layer on a surface of the thin film transistor layer away from the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode patterns and the second anode patterns being insulated from each other, wherein the orthographic projection of the first anode pattern on the substrate overlaps the orthographic projection of the first transistor on the substrate, the orthographic projection of the second anode pattern on the substrate overlaps the orthographic projection of the second transistor on the substrate, and the second anode pattern is connected to a preset signal;

[0054] S43, forming a pixel definition layer on a surface of the anode layer away from the thin film transistor, and forming a plurality of first openings in the pixel definition layer, wherein the orthographic projections of the first openings on the substrate overlap with the orthographic projections of the first anode pattern on the substrate;

[0055] S44, preparing a light-emitting functional layer on a surface of the pixel definition layer away from the anode layer, so that the light-emitting functional layer is connected to the first anode pattern based on the first opening.

[0056] Specifically, the preset signal connected to the second anode pattern can be a reset voltage signal or an operating voltage signal. When it is actually connected, after the flat layer of the thin film transistor layer is completed, the fourth opening that passes through the flat layer can be opened, so that the fourth opening is connected to the second metal pattern used as the source or drain in the second transistor below, thereby achieving the purpose of signal connectivity.

[0057] This embodiment forms different anode patterns when setting the anode layer, and applies a stable voltage to the second anode pattern used for shielding, providing an electrostatic discharge path for the second anode pattern, thereby preventing static electricity from affecting the working state of the second transistor. At the same time, relative to the position of the anode layer, the distance between the light-emitting functional layer and the lower panel is farther, so even if a capacitor is formed, it has a smaller load, thereby reducing the overall load of the display panel and achieving the purpose of reducing the power consumption of the display panel. It should be noted that when applying a preset signal to the second anode pattern, additional circuit layout may be caused, and additional metal wiring is likely to form additional load between the TFT metal layer. Therefore, when designing a display panel using the solution of this embodiment, the circuit design should be considered as a whole to avoid the design and implementation of the second anode pattern causing additional load.

[0058] The fifth embodiment of the present disclosure provides an electronic device, which can be any device with a display function, such as a mobile phone, a television, a computer, a watch, etc. The electronic device is installed with the display panel provided by the first embodiment or the second embodiment of the present disclosure, so that the electronic device has a lower load and a better display effect.

[0059] The above describes in detail multiple embodiments of the present disclosure, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection claimed by the present disclosure.

Claims

1. A display panel, characterized in that: include: substrate; A thin film transistor layer is provided on one surface of the substrate, the thin film transistor layer comprising at least a plurality of first transistors and a plurality of second transistors, the first transistors being used for pixel light emission control, and the second transistors being used for non-pixel light emission control; an anode layer provided on a surface of the thin film transistor layer away from the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode patterns being insulated from the second anode patterns, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, and the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate; a pixel definition layer, the pixel definition layer comprising a plurality of first openings and a plurality of second openings penetrating the pixel definition layer, wherein an orthographic projection of the first openings on the substrate overlaps with an orthographic projection of the first anode pattern on the substrate, and an orthographic projection of the second openings on the substrate overlaps with an orthographic projection of the second anode pattern on the substrate; A light-emitting functional layer covers the pixel definition layer, and the light-emitting functional layer is connected to the first anode pattern based on the first opening, and the light-emitting functional layer is connected to the second anode pattern based on the second opening.

2. The display panel according to claim 1, wherein: The light-emitting functional layer at least includes a light-emitting layer and a cathode layer which are sequentially arranged in a direction from the pixel definition layer to the anode layer.

3. The display panel according to claim 1, wherein: The anode layer is made of any one metal selected from magnesium, aluminum, and zinc, or an alloy of multiple metals.

4. The display panel according to claim 2, wherein: The light emitting layer includes a third opening penetrating the light emitting layer, wherein a median projection of the third opening on the substrate overlaps with an orthographic projection of the second opening on the substrate, so that the cathode layer is connected to the second anode pattern based on the third opening.

5. A method for preparing a display panel, characterized in that: include: A substrate is provided, and a thin film transistor layer is formed on one surface of the substrate, wherein the thin film transistor layer includes at least a plurality of first transistors and a plurality of second transistors, wherein the first transistors are used for pixel light emission control, and the second transistors are used for non-pixel light emission control; An anode layer is formed on a surface of the thin film transistor layer away from the substrate, the anode layer comprising at least a plurality of first anode patterns and a plurality of second anode patterns, the first anode patterns being insulated from the second anode patterns, wherein the orthographic projection of the first anode pattern on the substrate covers the orthographic projection of the first transistor on the substrate, and the orthographic projection of the second anode pattern on the substrate covers the orthographic projection of the second transistor on the substrate; A pixel definition layer is formed on a surface of the anode layer away from the thin film transistor, and a plurality of first openings and a plurality of second openings are formed in the pixel definition layer, wherein the orthographic projections of the first openings on the substrate overlap with the orthographic projections of the first anode pattern on the substrate, and the orthographic projections of the second openings on the substrate overlap with the orthographic projections of the second anode pattern on the substrate; A light-emitting functional layer is prepared on the surface of the pixel definition layer away from the anode layer, so that the light-emitting functional layer is connected to the first anode pattern based on the first opening, and the light-emitting functional layer is connected to the second anode pattern based on the second opening.

6. An electronic device, characterized in that: The device comprises at least the display panel according to any one of claims 1 to 4.

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