A display panel, a manufacturing method and a driving method thereof

Abstract

The application discloses a display panel, a preparation method and a driving method thereof. The display panel comprises a substrate, an anode layer, a white light emitting layer and a color filter layer. The anode layer comprises a plurality of first anodes and a plurality of second anodes arranged in an array. A second anode is arranged around a first anode. The second anode is insulated from the first anode. The number of the second anodes is less than that of the first anodes. The white light emitting layer is arranged on the side of the anode layer away from the substrate. The color filter layer is arranged on the side of the white light emitting layer away from the anode layer. The color filter layer comprises a plurality of filter parts and a plurality of hollow parts arranged around part of the filter parts. The hollow part is arranged directly above the second anode, and the filter part is arranged directly above the first anode. The technical scheme of the embodiment of the application improves the overall display brightness of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel, a method for preparing the display panel, and a driving method for the display panel. Background Technology

[0002] With the development of display technology, silicon-based organic light-emitting display technology (hereinafter referred to as silicon-based OLED technology) may become the next generation of micro-display technology. Silicon-based OLED has the advantages of small size, light weight, low power consumption and high resolution, and is the core component of near-eye display systems and the trend of next-generation micro-display technology.

[0003] Traditional methods of achieving colorization using precision photomask evaporation are limited by the precision of the photomask fabrication and the size of the aperture. Because silicon-based OLED microdisplays require high display resolution, photomask evaporation cannot meet these requirements. Therefore, existing silicon-based organic light-emitting display devices primarily employ a structure combining white light and color filters to achieve colorization. However, this combination sacrifices a significant portion of brightness during the colorization process. Furthermore, using a top-emitting structure with a single optical microcavity thickness (like a white OLED) as the backlight cannot maximize the luminous intensity of the red, green, and blue sub-pixels.

[0004] Therefore, improving and enhancing the overall brightness of display panels has become an urgent problem to be solved in the industry. Summary of the Invention

[0005] This invention provides a display panel, a method for manufacturing the display panel, and a driving method to improve the overall display brightness of the display panel.

[0006] According to one aspect of the present invention, a display panel is provided, comprising:

[0007] Substrate;

[0008] The anode layer includes a plurality of first anodes and a plurality of second anodes arranged in an array, a second anode surrounding a first anode, the second anodes being insulated from the first anodes, and the number of second anodes being less than the number of first anodes;

[0009] A white light emitting layer is disposed on the side of the anode layer away from the substrate;

[0010] A color filter layer is disposed on the side of the white light emitting layer away from the anode layer. The color filter layer includes a plurality of filter portions and a plurality of cutout portions respectively surrounding a portion of the filter portions. The cutout portions are disposed directly above the second anode, and the filter portions are disposed directly above the first anode.

[0011] Optionally, the plurality of first anodes comprises a plurality of first sub-anodes, a plurality of second sub-anodes and a plurality of third sub-anodes, and the light filtering part comprises a red light filtering unit, a green light filtering unit and a blue light filtering unit; a vertical projection of the red light filtering unit on the substrate covers a vertical projection of the first sub-anode on the substrate, a vertical projection of the green light filtering unit on the substrate covers a vertical projection of the second sub-anode on the substrate, and a vertical projection of the blue light filtering unit on the substrate covers a vertical projection of the third sub-anode on the substrate.

[0012] Optionally, the hollow part is arranged around the red light filtering unit and the green light filtering unit.

[0013] Optionally, the shape of the first anode is at least one of a hexagon, a rhombus and / or a square, and the shape of the second anode is at least one of a hexagonal ring, a rhombic ring and / or a square ring.

[0014] Optionally, the display panel further comprises a cathode layer; the cathode layer is arranged between the white light emitting layer and the color light filtering layer.

[0015] According to another aspect of the present application, a preparation method of a display panel is provided, the preparation method comprising:

[0016] providing a substrate;

[0017] forming an anode layer on one side of the substrate; wherein the anode layer comprises a plurality of first anodes and a plurality of second anodes arranged in an array, one second anode surrounds one first anode, the number of the second anodes is less than the number of the first anodes;

[0018] forming a white light emitting layer on the side of the anode layer away from the substrate;

[0019] forming a color light filtering layer on the side of the white light emitting layer away from the anode layer; wherein the color light filtering layer comprises a plurality of light filtering parts and a plurality of hollow parts arranged above the second anodes respectively, the light filtering parts are arranged above the first anodes.

[0020] Optionally, the forming of the anode layer comprises:

[0021] forming a metal anode film on one side of the substrate, spin-coating a photoresist on the surface of the metal anode film, etching the metal anode film through an exposure and development process to form the plurality of first anodes and the plurality of second anodes on the anode layer.

[0022] Optionally, after the white light emitting layer is formed, the method further comprises:

[0023] A cathode layer is formed on a side of the white light emitting layer away from the anode layer.

[0024] According to another aspect of the present application, there is also provided a driving method of a display panel for driving the display panel according to the first aspect;

[0025] The driving method of the display panel comprises:

[0026] When displaying a white picture, driving signals are output to each of the first anodes and the second anodes to drive the white light emitting layer on each of the first anodes and the second anodes to emit light.

[0027] When displaying a non-white picture, driving signals are output to part of the first anodes to drive the white light emitting layer on part of the first anodes to emit light, and the white light emitting layer on the second anodes is not driven to emit light.

[0028] Optionally, the plurality of first anodes comprises a plurality of first sub-anodes, a plurality of second sub-anodes and a plurality of third sub-anodes, and the light filtering part comprises a red light filtering unit, a green light filtering unit and a blue light filtering unit.

[0029] The driving method of the display panel for displaying a non-white picture comprises:

[0030] When displaying a red picture, driving signals are output to each of the first sub-anodes to drive the white light emitting layer on the first sub-anodes to emit light, and the white light passes through the red light filtering unit to perform monochromatic red display.

[0031] When displaying a green picture, driving signals are output to each of the second sub-anodes to drive the white light emitting layer on the second sub-anodes to emit light, and the white light passes through the green light filtering unit to perform monochromatic green display.

[0032] When displaying a blue picture, driving signals are output to each of the third sub-anodes to drive the white light emitting layer on the third sub-anodes to emit light, and the white light passes through the blue light filtering unit to perform monochromatic blue display.

[0033] The display panel provided by the technical scheme of the embodiment of the present application is characterized in that a plurality of first anodes and a plurality of second anodes are arranged in an array on the anode layer, the second anodes are arranged around part of the first anodes, and a certain interval is arranged between the second anodes and the first anodes to keep insulation. The white light emitting layer is arranged on the side of the anode layer away from the substrate, and the white light emitting layer can overlap the anode layer. The color filter layer is provided with a plurality of light filtering parts and a plurality of hollow parts, the plurality of hollow parts are arranged around part of the light filtering parts, the light filtering parts are arranged directly above the first anodes, and the hollow parts are arranged directly above the second anodes. The technical scheme of the embodiment of the present application can drive the white light emitting layer arranged directly above by the second anode to emit light when the display panel displays a white picture, and the white light directly emits out through the hollow part, so as to improve the overall brightness of the display panel.

[0034] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 is a structural schematic diagram of a display panel provided according to an embodiment of the present application;

[0037] Figure 2 is a top view structural diagram of an anode layer in a display panel provided according to an embodiment of the present application;

[0038] Figure 3 is a structural schematic diagram of another display panel provided according to an embodiment of the present application;

[0039] Figure 4 is a flowchart of a preparation method of a display panel provided according to an embodiment of the present application;

[0040] Figure 5 is a top view structural diagram of each step of a preparation method of a display panel provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts should fall within the scope of the present application.

[0042] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0043] The embodiment of the present application provides a display panel. Figure 1 A structural schematic diagram of a display panel is provided in the embodiment of the present application. As shown in the figure, Figure 1 The display panel comprises a substrate 10, an anode layer 20, a white light emitting layer 30 and a color filter layer 40.

[0044] The anode layer 20 comprises a plurality of first anodes 21 and a plurality of second anodes 22 arranged in an array, a second anode 22 is arranged around a first anode 21, the second anode 22 is insulated from the first anode 21, and the number of the second anodes 22 is less than the number of the first anodes 21.

[0045] The white light emitting layer 30 is arranged on the side of the anode layer 20 away from the substrate 10; the color filter layer 40 is arranged on the side of the white light emitting layer 30 away from the anode layer 20, the color filter layer 40 comprises a plurality of filter parts 41 and a plurality of hollow parts 42 arranged around part of the filter parts 41 respectively; the hollow part 42 is arranged directly above the second anode 22, and the filter part 41 is arranged directly above the first anode 21.

[0046] Specifically, the display panel can comprise a silicon-based OLED display panel, and the substrate 10 can be a silicon-based backplane. The display panel adopts the structure of the combination of the white light emitting layer 30 and the color filter layer 40 to realize colorization. The anode layer 20 is arranged on the surface of the substrate 10, the white light emitting layer 30 is arranged on the side of the anode layer 20 away from the substrate 10, and the color filter layer 40 is arranged in the light emitting direction of the white light emitting layer 30.

[0047] The anode layer 20 includes a plurality of first anodes 21 and a plurality of second anodes 22, and the plurality of first anodes 21 and the plurality of second anodes 22 are arranged in an array. Figure 1 Only two groups of the first anodes 21 and the second anodes 22 are shown by way of example. The first anodes 21 and the second anodes 22 are spaced apart from each other, so that the first anodes 21 and the second anodes 22 are insulated from each other and can receive driving signals separately to drive the white light emitting layer 30 in corresponding parts to emit light.

[0048] The white light emitting layer 30 includes a plurality of light emitting areas, and the vertical projection of each light emitting area on the white light emitting layer 30 completely overlaps each first anode 21 and each second anode 22 on the anode layer 20. The first anodes 21 are configured to drive the white light emitting layer 30 arranged directly above the first anodes 21 to emit light, and the second anodes 22 are configured to drive the white light emitting layer 30 arranged directly above the second anodes 22 to emit light.

[0049] The color filter layer 40 includes a plurality of filter parts 41, each filter part 41 is arranged directly above the white light emitting layer 30 whose vertical projection completely overlaps each first anode 21, and each filter part 41 is provided with a color filter film of different color. The first anodes 21 drive the white light emitted by the white light emitting layer 30 to pass through the corresponding filter parts 41 to convert into light of different colors to realize colorization. The color filter layer 40 also includes a plurality of hollow parts 42, and no color filter film is arranged at the hollow parts 42. The hollow parts 42 are arranged directly above each second anode 22. Since the second anodes 22 are arranged around only part of the first anodes 21, the number of the second anodes 22 is less than the number of the first anodes 21, and therefore the hollow parts 42 are arranged around only part of the filter parts 41, and the number of the hollow parts 42 is less than the number of the filter parts 41. Therefore, the white light emitting layer 30 directly above the second anodes 22 is driven by the second anodes 22 to emit light, and the white light directly passes through the hollow parts 42 to improve the overall brightness of the display panel.

[0050] In addition, since the color filter film arranged on part of the filter parts 41 decays relatively fast, the intensity of light of this color also decays relatively fast. Therefore, in order to balance the decay trend of light of different colors and achieve good display effect, the hollow parts 42 are arranged around the filter parts 41 corresponding to the color filter film which decays relatively slow, and the sum of the area of the hollow parts 42 and the area of the color filter film which decays relatively slow is equal to the area of the color filter film which decays relatively fast, that is, the area of the filter part 41 with the color filter film which decays relatively slow is reduced, so as to balance the filter part 41 with the color filter film which decays relatively fast as much as possible.

[0051] The display panel provided by the technical scheme of the embodiment is characterized in that a plurality of first anodes and a plurality of second anodes are arranged in an array on the anode layer, the second anodes are arranged around part of the first anodes, and a certain interval is arranged between the second anodes and the first anodes to keep insulation. The white light emitting layer is arranged on the side of the anode layer away from the substrate, and the white light emitting layer can overlap the anode layer. The color filter layer is provided with a plurality of light filtering parts and a plurality of hollow parts, the plurality of hollow parts are arranged around part of the light filtering parts, the light filtering parts are arranged directly above the first anodes, and the hollow parts are arranged directly above the second anodes. The technical scheme of the embodiment can drive the white light emitting layer arranged directly above the second anodes to emit light when the display panel displays a white picture, and the white light directly exits through the hollow parts, so that the brightness of the display panel as a whole is improved.

[0052] Optionally, on the basis of the above-mentioned embodiment, continuing to refer to Figure 1 The plurality of first anodes 21 include a plurality of first sub-anodes 211, a plurality of second sub-anodes 212 and a plurality of third sub-anodes 213, and the light filtering part 41 includes a red light filtering unit 411, a green light filtering unit 412 and a blue light filtering unit 413. The vertical projection of the red light filtering unit 411 on the substrate 10 covers the vertical projection of the first sub-anode 211 on the substrate 10, the vertical projection of the green light filtering unit 412 on the substrate 10 covers the vertical projection of the second sub-anode 212 on the substrate 10, and the vertical projection of the blue light filtering unit 413 on the substrate 10 covers the vertical projection of the third sub-anode 213 on the substrate 10.

[0053] Specifically, the first sub-anode 211, the second sub-anode 212 and the third sub-anode 213 included in the first anode 21 are respectively arranged in vertical correspondence with light filtering units of different colors to independently drive the white light emitting layer 30 arranged directly above each sub-anode, so that the white light emitted by the white light emitting layer 30 passes through the light filtering units of different colors to realize the color display of the display panel.

[0054] Exemplarily, the red filter unit 411 vertically corresponds to the directly above of the first sub-anode 211, and the first sub-anode 211 drives the white light emitting layer 30 arranged in the region directly above the first sub-anode 211 to emit light after receiving the driving signal, so that the emitted white light passes through the red filter unit 411 directly above, and the display panel realizes red display. The green filter unit 412 vertically corresponds to the directly above of the second sub-anode 212, and the second sub-anode 212 drives the white light emitting layer 30 arranged in the region directly above the second sub-anode 212 to emit light after receiving the driving signal, so that the emitted white light passes through the green filter unit 412 directly above, and the display panel realizes green display. The blue filter unit 413 vertically corresponds to the directly above of the third sub-anode 213, and the third sub-anode 213 drives the white light emitting layer 30 arranged in the region directly above the third sub-anode 213 to emit light after receiving the driving signal, so that the emitted white light passes through the blue filter unit 413 directly above, and the display panel realizes blue display.

[0055] Optionally, on the basis of each of the above embodiments, continuing to refer to Figure 1 , the hollow part 42 is arranged around the red filter unit 411 and the green filter unit 412.

[0056] Specifically, since the attenuation speed of blue light is greater than that of red light and that of green light, in order to ensure that the display panel is not prone to color deviation, the possibility of color deviation can be reduced by increasing the light-emitting area of blue light. Therefore, as Figure 2 indicated, the area of the red filter unit 411, the first sub-anode 211 and the part of the white light emitting layer 30 arranged directly above the first sub-anode 211 is reduced, and the area of the green filter unit 412, the second sub-anode 212 and the part of the white light emitting layer 30 arranged directly above the second sub-anode 212 is reduced, so that the number of blue light emitted by the blue filter unit 413 is greater than the number of red light emitted by the red filter unit 411, and greater than the number of green light emitted by the green filter unit 412, so that the display panel maintains the attenuation balance of light lines of different colors.

[0057] On the color filter layer 40, the hollow part 42 is arranged around the red filter unit 411 and the green filter unit 412, and there is a certain interval between the hollow part 42 and the red filter unit 411 and between the hollow part 42 and the green filter unit 412, and the vertical projection of the interval coincides with the interval between the first anode 21 and the second anode 22. The sum of the areas of the red filter unit 411, the hollow part 42 and the interval between the red filter unit 411 and the hollow part 42 is equal to the area of the blue filter unit 413, and the sum of the areas of the green filter unit 412, the hollow part 42 and the interval between the green filter unit 412 and the hollow part 42 is equal to the area of the blue filter unit 413, so that the red filter unit 411, the green filter unit 412 and the blue filter unit 413 with different areas can still be simply arranged in an array.

[0058] The vertical projection between the second anode 22 and the first anode 21 keeps the second anode 22 and the first anode 21 insulated. When the display panel displays a white picture, each first anode 21 receives a driving signal and drives the white light emitting layer 30 arranged directly above the first anode 21 to emit light, so that the display panel emits red, green and blue light, and emits white light after mixing, thereby displaying a white picture. At the same time, each second anode 22 receives a corresponding driving signal and drives the white light emitting layer 30 arranged directly above the second anode 22 to emit light, and the white light is directly emitted through the hollow part 42, thereby improving the overall brightness of the display panel.

[0059] Optionally, Figure 2 is a top view of an anode layer in a display panel provided by an embodiment of the present application. Based on the above embodiments, as shown in Figure 2 the shape of the first anode 21 is at least one of a hexagon, a rhombus and / or a square, and the shape of the second anode 22 is at least one of a hexagonal ring, a rhombic ring and / or a square ring.

[0060] Specifically, the shape of the first anode 21 is not fixed, and then the shape of the filter part 41 is also not fixed and can be set according to actual conditions, which is not limited here. Exemplarily, Figure 1 a case where the first anode 21 is a hexagon is shown, Figure 2 a case where the first anode 21 is a rhombus is shown, and a case where the first anode 21 is a square is similar to the above two cases and is not shown in the figure. Since the second anode 22 is arranged around the first anode 21, the shape of the second anode 22 is related to the shape of the first anode 21, and the second anode 22 is a ring structure corresponding to the shape of the first anode 21. Exemplarily, Figure 1 a case where the second anode 22 is a hexagonal ring is shown, Figure 2 a case where the second anode 22 is a rhombic ring is shown, and a case where the second anode 22 is a square ring is similar to the above two cases and is not shown in the figure.

[0061] Optionally, Figure 3 is another structural schematic diagram of a display panel provided by an embodiment of the present application. Based on the above-mentioned embodiments, as shown in the figure, the display panel further comprises a cathode layer 50; the cathode layer 50 is arranged between the white light emitting layer 30 and the color filter layer 40. Figure 3

[0062] Specifically, the cathode layer 50 is used to provide electrons. When the anode layer 20 receives a driving signal, an electric field is formed between the anode layer 20 and the cathode layer 50, so that the white light emitting layer 30 arranged between the anode layer 20 and the cathode layer 50 emits white light, so as to realize picture display of the display panel. Exemplarily, the cathode layer 50 can be formed by a metal material with low work function, for example, aluminum or the like.

[0063] An embodiment of the present application further provides a preparation method of a display panel. Figure 4 is a flowchart of a preparation method of a display panel provided by an embodiment of the present application, Figure 5 is a top view structural schematic diagram of each step of the preparation method of the display panel provided by an embodiment of the present application. In combination with Figure 4 and Figure 5 , the preparation method of the display panel comprises the following steps.

[0064] S110, providing a substrate 10.

[0065] Specifically, a silicon-based backplane is used as the substrate 10 of the display panel.

[0066] S120, forming an anode layer 20 on one side of the substrate 10; wherein the anode layer 20 comprises: a plurality of first anodes 21 and a plurality of second anodes 22 arranged in an array, a second anode 22 surrounds a first anode 21, the number of the second anodes 22 is less than the number of the first anodes 21.

[0067] Specifically, the anode layer 20 is made of a material with relatively high work function, for example, gold or the like. The anode material film is formed on the surface of the substrate 10 by a vacuum evaporation method, and the plurality of first anodes 21 and the plurality of second anodes 22 arranged in an array are formed on the anode material film by a patterning process.

[0068] S130, forming a white light emitting layer 30 on the side of the anode layer 20 away from the substrate 10.

[0069] Specifically, the white light emitting material film is formed on the side of the anode layer 20 away from the substrate 10 by a vacuum evaporation method, and the white light emitting layer 30 is formed by a patterning process on the white light emitting material film.

[0070] ​S140, forming a color filter layer 40 on the side of the white light emitting layer 30 away from the anode layer 20; wherein the color filter layer 40 comprises a plurality of filter portions 41 and a plurality of hollow portions 42 respectively arranged around part of the filter portions 41, the hollow portions 42 are arranged directly above the second anodes 22, and the filter portions 41 are arranged directly above the first anodes 21.

[0071] Specifically, on the side of the white light emitting layer 30 away from the anode layer 20, a vacuum evaporation method is used to form the color filter material. Since the color filter layer 40 comprises a plurality of filter portions 41, and the plurality of filter portions 41 comprises three kinds of filter materials. Therefore, each kind of filter material is evaporated in turn, and a patterning process is performed to form the color filter layer 40. Exemplarily, a red filter material film is first evaporated, and the red filter material film is patterned to retain the corresponding red filter material film directly above the first sub-anode, thereby forming a red filter unit; then a green filter material film is evaporated, and the green filter material film is patterned to retain the corresponding green filter material film directly above the second sub-anode, thereby forming a green filter unit; finally, a blue filter material film is evaporated, and the blue filter material film is patterned to retain the corresponding blue filter material film directly above the third sub-anode, thereby forming a blue filter unit, thereby forming the color filter layer 40.

[0072] The above preparation method can prepare the display panel provided by any of the embodiments of the present application. The prepared display panel can improve the overall display brightness of the display panel, and can balance the attenuation trend of red light, green light and blue light, and reduce the occurrence of color deviation phenomenon.

[0073] Optionally, on the basis of the above-mentioned embodiments, the anode layer comprises:

[0074] A layer of metal anode film is formed on one side of the substrate 10, a layer of photoresist is spin-coated on the surface of the metal anode film, and the metal anode film is etched by an exposure and development process to form a plurality of first anodes 21 and a plurality of second anodes 22 on the anode layer 20.

[0075] Specifically, after forming the metal anode thin film, a photoresist film is formed on the surface of the metal anode thin film by spin coating. The photoresist can be positive photoresist or negative photoresist, which is not limited herein. The photoresist film is exposed and developed to etch the anode layer 20, and the first anode 21 and the second anode 22 are reserved. After removing the photoresist, a plurality of first anodes 21 and a plurality of second anodes 22 are obtained. If the positive photoresist is used, the first anode 21 and the second anode 22 are exposed, and the photoresist film in the regions of the first anode 21 and the second anode 22 is reserved after development. If the negative photoresist is used, the regions other than the first anode 21 and the second anode 22 are exposed, and the photoresist film in the regions of the first anode 21 and the second anode 22 is reserved after development.

[0076] Optionally, on the basis of the above-mentioned embodiments, after forming the white light emitting layer, further comprising:

[0077] forming a cathode layer 50 on the side of the white light emitting layer 30 away from the anode layer 20.

[0078] Specifically, the cathode layer 50 is formed on the side of the white light emitting layer 30 away from the anode layer 20, so that the cathode layer 50 and the anode layer 20 form an electric field, thereby controlling the white light emitting layer 30 in the middle to emit light.

[0079] The embodiment of the present application also provides a driving method of a display panel. The driving method of the display panel is used for driving the display panel as described in any of the above-mentioned embodiments, and the driving method of the display panel comprises:

[0080] when displaying a white picture, outputting a driving signal to each of the first anode and the second anode to drive the white light emitting layer on each of the first anode and the second anode to emit light;

[0081] when displaying a non-white picture, outputting a driving signal to part of the first anode to drive the white light emitting layer on part of the first anode to emit light, and not driving the white light emitting layer on the second anode to emit light.

[0082] Specifically, when the display panel displays a white picture, the first anode part corresponding to each filter part drives the partial region of the white light emitting layer corresponding to each filter part to emit light according to the received driving signal, and the white light transmits through each filter part to emit red light, green light and blue light. The red light, the green light and the blue light are mixed to form white light, and the white light is emitted from the light emitting surface of the display panel to realize white picture display. In addition, the second anode part corresponding to the hollow part also receives the driving signal to drive the white light emitting layer directly above the second anode to emit light, and the white light directly transmits through the hollow part to be emitted from the light emitting surface of the display panel, thereby improving the overall brightness of the display panel.

[0083] When displaying a non-white picture, only the first anodes corresponding to the color filter units are outputted with driving signals to drive the white light emitting layers corresponding to the color filter units to emit light, while the first anodes corresponding to other color filter units and the second anodes corresponding to the hollow parts are not inputted with driving signals, so that the white light emitting layers corresponding to the other color filter units and the hollow parts do not emit light, thereby ensuring that the color picture displayed by the display panel has good color accuracy.

[0084] Optionally, on the basis of the above-mentioned embodiments, the plurality of first anodes comprises a plurality of first sub-anodes, a plurality of second sub-anodes and a plurality of third sub-anodes, and the filter part comprises a red color filter unit, a green color filter unit and a blue color filter unit.

[0085] The driving method of the display panel for displaying a non-white picture comprises:

[0086] When displaying a red picture, the first sub-anodes are outputted with driving signals to drive the white light emitting layers on the first sub-anodes to emit light, and the white light passes through the red color filter unit to perform monochromatic red display.

[0087] When displaying a green picture, the second sub-anodes are outputted with driving signals to drive the white light emitting layers on the second sub-anodes to emit light, and the white light passes through the green color filter unit to perform monochromatic green display.

[0088] When displaying a blue picture, the third sub-anodes are outputted with driving signals to drive the white light emitting layers on the third sub-anodes to emit light, and the white light passes through the blue color filter unit to perform monochromatic blue display.

[0089] Specifically, when performing monochromatic red display, only the first sub-anodes are outputted with driving signals to make the white light pass through the red color filter unit to emit red light; when performing monochromatic green display, only the second sub-anodes are outputted with driving signals to make the white light pass through the green color filter unit to emit green light; and when performing monochromatic blue display, only the third sub-anodes are outputted with driving signals to make the white light pass through the blue color filter unit to emit blue light. When performing dual-color picture display, only the corresponding sub-anodes are outputted with driving signals to emit light of corresponding colors. Exemplarily, when displaying a red and green picture, only the first sub-anodes and the second sub-anodes are outputted with driving signals, so that the emitted white light passes through the red color filter unit and the green color filter unit to perform red and green picture display.

[0090] The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that, include: Substrate; The anode layer includes a plurality of first anodes and a plurality of second anodes arranged in an array, a second anode surrounding a first anode, the second anodes being insulated from the first anodes, and the number of second anodes being less than the number of first anodes; A white light emitting layer is disposed on the side of the anode layer away from the substrate; A color filter layer is disposed on the side of the white light emitting layer away from the anode layer. The color filter layer includes a plurality of filter portions and a plurality of cutout portions respectively surrounding a portion of the filter portions. The cutout portions are disposed directly above the second anode, and the filter portions are disposed directly above the first anode.

2. The display panel according to claim 1, characterized in that, The plurality of first anodes includes a plurality of first sub-anodes, a plurality of second sub-anodes, and a plurality of third sub-anodes. The filter section includes a red filter unit, a green filter unit, and a blue filter unit. The vertical projection of the red filter unit on the substrate covers the vertical projection of the first sub-anodes on the substrate, the vertical projection of the green filter unit on the substrate covers the vertical projection of the second sub-anodes on the substrate, and the vertical projection of the blue filter unit on the substrate covers the vertical projection of the third sub-anodes on the substrate.

3. The display panel according to claim 2, characterized in that, The cutout portion is arranged around the red filter unit and the green filter unit.

4. The display panel according to claim 1, characterized in that, The first anode is in the shape of at least one of hexagon, rhombus and / or square, and the second anode is in the shape of at least one of hexagonal ring, rhombus ring and / or square ring.

5. The display panel according to claim 1, characterized in that, Also includes: A cathode layer is disposed between the white light emitting layer and the color filter layer.

6. A method for manufacturing a display panel, characterized in that, include: Provide a substrate; An anode layer is formed on one side of the substrate; wherein the anode layer includes: a plurality of first anodes and a plurality of second anodes arranged in an array, a second anode surrounding a first anode, the second anode being insulated from the first anode, and the number of second anodes being less than the number of first anodes; A white light-emitting layer is formed on the side of the anode layer away from the substrate; A color filter layer is formed on the side of the white light emitting layer away from the anode layer; wherein the color filter layer includes a plurality of filter portions and a plurality of cutout portions respectively disposed around a portion of the filter portions, the cutout portions being disposed directly above the second anode, and the filter portions being disposed directly above the first anode.

7. The method for manufacturing a display panel according to claim 6, characterized in that, The formation of the anode layer includes: A metal anode thin film is formed on one side of the substrate, and a photoresist layer is spin-coated on the surface of the metal anode thin film. The metal anode thin film is etched by exposure and development processes to form a plurality of first anodes and a plurality of second anodes on the anode layer.

8. The method for manufacturing a display panel according to claim 6, characterized in that, After forming the white light emitting layer, the method further includes: A cathode layer is formed on the side of the white light emitting layer away from the anode layer.

9. A driving method for a display panel, characterized in that, For driving the display panel as described in any one of claims 1-5; The driving method for the display panel includes: When displaying a white screen, drive signals are output to each of the first anodes and second anodes to drive the white light-emitting layers on each of the first anodes and second anodes to emit light. When displaying a non-white image, a drive signal is output to a portion of the first anode to drive the white light emitting layer on the portion of the first anode to emit light, and to drive the white light emitting layer on the second anode not to emit light.

10. The driving method for a display panel according to claim 9, characterized in that, The plurality of first anodes includes a plurality of first sub-anodes, a plurality of second sub-anodes, and a plurality of third sub-anodes, and the filter section includes a red filter unit, a green filter unit, and a blue filter unit; The driving method for displaying a non-white image on the display panel includes: When displaying a red image, a driving signal is output to each of the first sub-anodes to drive the white light emitting layer on the first sub-anode to emit light. The white light passes through the red filter unit to display a monochrome red image. When displaying a green image, a driving signal is output to each of the second sub-anodes to drive the white light emitting layer on the second sub-anodes to emit light. The white light passes through the green filter unit to display a monochrome green image. When displaying a blue image, a driving signal is output to each of the third sub-anodes to drive the white light emitting layer on the third sub-anode to emit light. The white light passes through the blue filter unit to display a monochrome blue image.

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