Display panel, display device, and method for manufacturing display panel

Abstract

The present invention discloses a display panel 100, a display device 10 and a manufacturing method of the display panel 100, in which an undersubstrate 200, an anode 300, a pixel defining layer 400, an emitting layer 500 and a cathode 600 are sequentially disposed, the cathode 600 covers the emitting layer 500 and the pixel defining layer 400, a filter layer 700 is disposed on one side of the cathode 600 remote from the undersubstrate 200, a second emitting region 520 corresponds to a blue color resist 730, and the second emitting region 520 includes a blue emitting layer 521 made of a blue emitting material.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS The present invention claims priority to a Chinese patent application filed on July 22, 2022, by the China Patent Office, application number 202210865861.0, entitled "Display panel, display device and method for manufacturing display panel", the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of display technology, and more particularly to a display panel, a display device, and a method for manufacturing a display panel. [Background technology]

[0003] The discussion herein merely provides background information related to the present invention and does not necessarily constitute prior art.

[0004] OLED (Organic Light Emitting Display) has excellent characteristics such as self-luminescence, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response speed, usability in flexible panels, wide operating temperature range, and simple structure and manufacturing process. Therefore, it is considered to be the next-generation mainstream flat panel display technology and is currently one of the most notable flat panel display technologies.

[0005] In the conventional full-color method of OLED display panel, the optical filter method uses white organic light emitting diodes as a backlight and needs to add filters on it to display red, green, and blue lights. However, the luminance attenuation of the blue pixels is serious, which reduces the luminous efficiency and service life of the display device, resulting in poor product performance. Summary of the Invention [Problem to be solved by the invention]

[0006] The objective of the present invention is to provide a display panel, a display device and a manufacturing method for the display panel, so as to mitigate the luminance decay of the blue pixel, increase the luminous efficiency of the display device and extend the service life of the OLED display panel. [Means for solving the problem]

[0007] The present invention discloses a display panel including: an undersubstrate; anodes arranged in a matrix on the undersubstrate; a pixel definition layer arranged on the undersubstrate, the pixel definition layer including an aperture region and a non-aperture region, the non-aperture region being arranged between two adjacent anodes; a light-emitting layer arranged in the aperture region; a cathode covering the light-emitting layer and the pixel definition layer; and a filter layer arranged on one side of the cathode away from the undersubstrate, the light-emitting layer including a first light-emitting region and a second light-emitting region, the first light-emitting region being arranged corresponding to a red color resist and a green color resist in the filter layer, the second light-emitting region being arranged corresponding to a blue color resist in the filter layer, the second light-emitting region including a blue light-emitting layer, and the blue light-emitting layer being made of a blue light-emitting material.

[0008] The present invention further discloses a display device, comprising: a circuit board and a display panel, the circuit board being electrically connected to the display panel, the display panel comprising: a base substrate; anodes arranged in a matrix on the base substrate; a pixel definition layer arranged on the base substrate, the pixel definition layer including an opening region and a non-opening region, the non-opening region being arranged between two adjacent anodes; a light-emitting layer arranged in the opening region; a cathode covering the light-emitting layer and the pixel definition layer; and a filter layer arranged on one side of the cathode away from the base substrate, the light-emitting layer comprising a first light-emitting region and a second light-emitting region, the first light-emitting region being arranged corresponding to a red color resist and a green color resist in the filter layer, the second light-emitting region being arranged corresponding to a blue color resist in the filter layer, the second light-emitting region comprising a blue light-emitting layer, the blue light-emitting layer being made of a blue light-emitting material.

[0009] The present invention further discloses a method for manufacturing the display panel for manufacturing the above-mentioned display panel, comprising the steps of: manufacturing anodes arranged in a plurality of arrays on a base substrate; depositing a light-shielding material on the anodes, and forming a pixel definition layer disposed on the base substrate by a mask blank, the pixel definition layer located between two adjacent anodes is a non-aperture region, and an aperture region is formed between two adjacent non-aperture regions of the pixel definition layer; forming a light-emitting layer in which a first light-emitting region and a second light-emitting region are configured in parallel in the aperture region, the first light-emitting region includes a white light-emitting layer made of a white light-emitting material, the second light-emitting region includes a blue light-emitting layer, and the blue light-emitting layer is made of a blue light-emitting material; forming a cathode on the light-emitting layer; and forming a filter layer on the cathode, so that the blue color resist in the filter layer is disposed on the blue light-emitting layer in the second light-emitting region, and the green color resist and the red color resist in the filter layer are disposed on the white light-emitting layer in the first light-emitting region.

[0010] In contrast to the solution in which the light-emitting layers corresponding to the three kinds of color resists of red, green and blue are all white light-emitting layers, the present invention makes the second light-emitting region corresponding to the blue color resist from a blue light-emitting material, and makes the first light-emitting region corresponding to the red and green color resists from a white light-emitting material, so that in the operation state of the display panel, the light emitted from the second light-emitting region corresponding to the blue color resist is blue light, and the problem of blue luminance attenuation of the display panel can be alleviated, thereby increasing the light-emitting efficiency of the display device and extending the service life of the display panel. [Brief description of the drawings]

[0011] The drawings included in this specification are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, illustrate the embodiments of the present application, and are used to explain the principles of the present invention together with the written description. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative labor. [Figure 1] 1 is a schematic diagram of a display device of the present invention. [Diagram 2] FIG. 1 is a schematic diagram disclosing a display panel according to a first embodiment of the present invention. [Diagram 3] FIG. 11 is a schematic diagram disclosing a display panel according to a second embodiment of the present invention. [Figure 4] FIG. 11 is a schematic diagram disclosing a display panel according to a third embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic diagram disclosing a display panel according to a fourth embodiment of the present invention. [Figure 6] FIG. 13 is a schematic diagram disclosing a display panel according to a fifth embodiment of the present invention. [Figure 7] 1 is a flow chart disclosing a manufacturing method for a first type of display panel of the present invention. [Figure 8] 1A to 1C are diagrams illustrating a manufacturing process of the first type of display panel of the present invention. [Figure 9] 1A to 1C are diagrams illustrating a manufacturing process of a second type of display panel of the present invention. [Figure 10] 11A to 11C are diagrams illustrating a manufacturing process of a third type of display panel of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] It should be understood that the terminology used herein and the specific structural and functional details disclosed are merely for the purpose of describing specific embodiments and are representative, however, the present invention can be specifically embodied in many permutations and should not be construed as being limited to only the embodiments described herein.

[0013] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood to indicate the relative importance or to imply the number of the indicated technical features. Thus, unless otherwise stated, a "first" or "second" feature may explicitly or implicitly include one or more of the features, and "plurality" means two or more. The term "comprises" and any variation thereof means exclusive and does not include, and may include or add one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0014] Furthermore, terms of orientation or positional relationship such as "center," "lateral," "up," "down," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," etc. are described based on the orientation or relative positional relationship shown in the drawings, and are intended only to facilitate simplified explanation of the invention, and are not intended to indicate that the designated device or element must have a particular orientation or be constructed or operated in a particular orientation, and should not be understood as limiting the invention.

[0015] Unless otherwise specified and limited, the terms "attached", "connected" and "connected" should be understood in a broad sense, for example, may be fixedly connected, detachably connected, or integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected via an intermediate medium, or may be internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific situation.

[0016] The present invention will now be described in detail with reference to the drawings and optional embodiments.

[0017] FIG. 1 is a schematic diagram of a display device disclosed in the present invention. As shown in FIG. 1, the present invention discloses a display device 10, which includes a circuit board 20 and a display panel 100, and the circuit board 20 is electrically connected to the display panel 100, typically by a flexible circuit board 20.

[0018] The present invention further discloses a display panel, which can be used in the display device as mentioned above, for which the present invention provides the following design.

[0019] FIG. 2 discloses a schematic diagram of a display panel according to a first embodiment of the present invention. As shown in FIG. 2, a display panel 100 is disclosed, which is an OLED display panel 100, and includes an undersubstrate 200, an anode 300, a pixel defining layer 400, an emitting layer 500, a cathode 600, a filter layer 700, and an encapsulating layer 800.

[0020] Here, the anodes 300 are arranged in a matrix on the undersubstrate 200, the pixel definition layer 400 is disposed on the undersubstrate 200 and includes an open region and a non-open region, a non-open region is located between two adjacent anodes 300, and two adjacent non-open regions of the pixel definition layer 400 form an open region, an emission layer 500 is disposed in the open region, a cathode 600 covers the emission layer 500 and the pixel definition layer 400, a filter layer 700 is disposed on one side of the cathode 600 away from the undersubstrate 200, and a sealing layer 800 covers the filter layer 700.

[0021] The filter layer 700 includes three types of color resists, i.e., red, green, and blue (abbreviated as RGB), and may further include yellow and white color resists. The different color resists are separated by the pixel definition layer 400. This is not limiting, and a typical filter layer 700 includes three types of color resists, i.e., red, green, and blue, as an example.

[0022] The light-emitting layer 500 includes a first light-emitting region 510 and a second light-emitting region 520, the first light-emitting region 510 corresponds to the red color resist 710 and the green color resist 720 in the filter layer 700, the first light-emitting region 510 includes a white light-emitting layer 511 made of a white light-emitting material, and the light emitted from the white light-emitting material is white light, and the white light-emitting layer 511 is disposed corresponding to the red color resist 710 and the green color resist 720 respectively, the second light-emitting region 520 corresponds to the blue color resist 730 in the filter layer 700, and the second light-emitting region 520 includes a blue light-emitting layer 521, and the blue light-emitting layer 521 is made of a blue light-emitting material, and the light emitted from the blue light-emitting material is blue light.

[0023] In contrast to the solution in which the light-emitting layers 500 corresponding to the three types of color resists of red, green, and blue all adopt the white light-emitting layer 511, the present invention makes the second light-emitting region 520 corresponding to the blue color resist 730 from a blue light-emitting material, and makes the first light-emitting region 510 corresponding to the red color resist 710 and the green color resist 720 from a white light-emitting material, so that when the display panel 100 is in operation, the light emitted from the second light-emitting region 520 corresponding to the blue color resist 730 is blue light, which can alleviate the problem of blue brightness attenuation of the display panel 100, and thereby increase the light-emitting efficiency of the display device and extend the service life of the display panel 100.

[0024] In addition, the industry generally increases the voltage between the cathode 600 and the anode 300 corresponding to the blue color resist 730 to improve the brightness of the blue pixel of the display panel 100. However, this makes the circuit of the display panel 100 more complicated and increases the burden on the driving chip. In addition, the aperture ratio of the red color resist 710 and the green color resist 720 is reduced, i.e., the aperture ratio of the blue color resist 730 is improved in the opposite direction to alleviate the problem of blue brightness attenuation of the display panel 100. However, this reduces the brightness of the entire display panel 100, which is detrimental to the display of the display panel 100.

[0025] The present invention alleviates the problem of blue brightness attenuation in the display panel 100, while not changing the driving circuit and not reducing the overall brightness of the display panel 100, thereby increasing the luminous efficiency of the display device and extending the service life of the display panel 100.

[0026] The following will specifically illustrate the improvements of the present invention by giving several examples, which are as follows:

[0027] <Example 1> As shown in FIG. 2, the light-emitting layer 500 includes a first light-emitting region 510 and a second light-emitting region 520, the first light-emitting region 510 corresponds to the red color resist 710 and the green color resist 720 in the filter layer 700, the first light-emitting region 510 is a white light-emitting layer 511 made of a white light-emitting material, and the white light-emitting layer 511 is provided corresponding to the red color resist 710 and the green color resist 720 respectively, the second light-emitting region 520 corresponds to the blue color resist 730 in the filter layer 700, and the second light-emitting region 520 includes a blue light-emitting layer 521, and the blue light-emitting layer 521 is made of a blue light-emitting material.

[0028] That is, the first light-emitting region 510 corresponding to the red color resist 710 and the green color resist 720 emits only white light, and the second light-emitting layer 500 region corresponding to the blue color resist 730 emits only blue light. Although the brightness of the first light-emitting region 510 and the second light-emitting region 520 is the same, the second light-emitting region 520 emits only blue light, so that the blue brightness of the display panel 100 can be improved, and the problem of blue brightness attenuation of the display panel 100 can be alleviated.

[0029] Furthermore, the thickness of the blue color resist 730 in the filter layer 700 can be reduced, that is, the thicknesses of the color resists of other colors, for example, the thickness of the green color resist 720 and the thickness of the red color resist 710, are all greater than the thickness of the blue color resist 730. In this way, the transmittance of the blue light-emitting layer 521 can be further improved, and the blue luminance of the display panel 100 can be improved. Furthermore, the blue color resist 730 is not required, and thus the problem of low blue luminance of the display panel 100 can be greatly alleviated.

[0030] <Example 2> FIG. 3 discloses a schematic diagram of a display panel according to a second embodiment of the present invention. As shown in FIG. 3, different from the first embodiment, the second light-emitting region 520 further includes a main light-emitting layer 522, which is made of a white light-emitting material, and the main light-emitting layer 522 is disposed between the anode 300 and the blue light-emitting layer 521.

[0031] By further overlapping the blue light-emitting layer 521 on the main light-emitting layer 522, the luminance of the second light-emitting region 520 is further improved, and the blue luminance of the corresponding display panel 100 is correspondingly improved.

[0032] When manufacturing the display panel 100, the main light-emitting layer 522 in this embodiment is installed in the same layer as the white light-emitting layer 511 in the first light-emitting region 510, which is equivalent to adding a blue light-emitting layer 521 between the main light-emitting layer 522 corresponding to the blue color resist 730 and the cathode 600, thereby reducing the manufacturing process and improving manufacturing efficiency.

[0033] The blue pixel corresponds to increasing the blue light emitting layer 521, and the thickness of the blue light emitting layer 521 is 5-15 nm, so in this embodiment, the color resists of other colors are made thicker, for example, the thickness of the red color resist 710 and the thickness of the green color resist 720 are both greater than the sum of the thickness of the blue light emitting layer 521 and the thickness of the blue color resist 730. If the thickness of the red color resist 710 and the thickness of the green color resist 720 are both greater than the sum of the thickness of the blue light emitting layer 521 and the thickness of the blue color resist 730, the blue brightness of the display panel 100 is further improved; if the thickness of the red color resist 710 and the thickness of the green color resist 720 are both equal to the sum of the thickness of the blue light emitting layer 521 and the thickness of the blue color resist 730, the film layer of the display panel 100 is more flat.

[0034] In addition, since this embodiment has a single optical filter, when the blue light-emitting layer 521 is manufactured between the main light-emitting layer 522 and the cathode 600, even if the blue light-emitting layer 521 is printed between the white light-emitting layer 511 of the adjacent first light-emitting region 510 and the cathode 600, the phenomenon of color mixing due to blue light appearing in the region corresponding to the color resist of another color does not occur.

[0035] <Example 3> 4 discloses a schematic diagram of a display panel according to a third embodiment of the present invention, as shown in FIG. 4, different from the first embodiment, the second light-emitting region 520 further includes an auxiliary light-emitting layer 523, which is disposed between the anode 300 and the main light-emitting layer 522, and the auxiliary light-emitting layer 523 is made of a blue light-emitting material. That is, a blue light-emitting layer 521 is disposed between the cathode 600 and the main light-emitting layer 522, and the auxiliary light-emitting layer 523 is disposed between the anode 300 and the main light-emitting layer 522, and the auxiliary light-emitting layer 523 also corresponds to the blue light-emitting layer 521, which can further improve the blue brightness of the display panel 100.

[0036] In addition, the sum of the thickness of the red color resist 710 and the thickness of the white light-emitting layer 511 is greater than or equal to the sum of the thicknesses of the blue color resist 730, the main light-emitting layer 522, the auxiliary light-emitting layer 523 and the blue light-emitting layer 521, and the sum of the thickness of the green color resist 720 and the white light-emitting layer 511 is greater than or equal to the sum of the thicknesses of the blue color resist 730, the main light-emitting layer 522, the auxiliary light-emitting layer 523 and the blue light-emitting layer 521, where the thickness of the white light-emitting layer 511 is equal to the thickness of the main light-emitting layer 522.

[0037] When the thickness of the red color resist 710 and the thickness of the green color resist 720 are all greater than the sum of the thickness of the blue color resist 730, the thickness of the auxiliary light-emitting layer 523 and the thickness of the blue light-emitting layer 521, the blue brightness of the display panel 100 is further improved, and when the thickness of the red color resist 710 and the thickness of the green color resist 720 are all equal to the sum of the thickness of the blue color resist 730, the thickness of the auxiliary light-emitting layer 523 and the thickness of the blue light-emitting layer 521, the film layer of the display panel 100 is smoother.

[0038] <Example 4> FIG. 5 discloses a schematic diagram of a display panel according to the fourth embodiment of the present invention. As shown in FIG. 5, different from the second embodiment, the main light-emitting layer 522 is disposed between the blue light-emitting layer 521 and the cathode 600.

[0039] Specifically, a blue light-emitting material is disposed between the main light-emitting layer 522 and the anode 300, which corresponds to manufacturing the anode 300 in a matrix arrangement on the base substrate 200 during the manufacturing process of the display panel 100, and further manufacturing the blue light-emitting layer 521 on the anode 300 corresponding to the blue color resist 730. Compared with the solution of the first embodiment, the solution of this embodiment does not allow the blue light-emitting material to enter the main light-emitting layer 522, which affects the white light-emitting layer 511 in the first light-emitting region 510 to emit white light.

[0040] <Example 5> FIG. 6 discloses a schematic diagram of a display panel according to the fifth embodiment of the present invention. As shown in FIG. 6, unlike the second embodiment of the present invention, a green light-emitting layer 513 is further installed between the white light-emitting layer 511 corresponding to the green color resist 720 in the first light-emitting area 510 and the cathode 600, and a red light-emitting layer 512 is further installed between the white light-emitting layer 511 corresponding to the red color resist 710 in the first light-emitting area 510 and the cathode 600.

[0041] Specifically, the first light-emitting region 510 further includes a red light-emitting layer 512 and a green light-emitting layer 513, the red light-emitting layer 512 being made of a red light-emitting material, the green light-emitting layer 513 being made of a green light-emitting material, the red light-emitting layer 512 corresponding to the red color resist 710 in the filter layer 700 and being disposed between the white light-emitting layer 511 and the cathode 600, and the green light-emitting layer 513 corresponding to the green color resist 720 in the filter layer 700 and being disposed between the white light-emitting layer 511 and the cathode 600.

[0042] By increasing the number of light-emitting layers 500 of the corresponding colors to the corresponding color resists, the brightness attenuation of each color resist in the display panel 100 can be mitigated, the service life of the display panel 100 can be improved, and the brightness of the entire display panel 100 can be improved.

[0043] Of course, a green light-emitting layer 513 may be further installed between the white light-emitting layer 511 corresponding to the green color resist 720 in the first light-emitting region 510 and the anode 300, and a red light-emitting layer 512 may be further installed between the white light-emitting layer 511 corresponding to the red color resist 710 in the first light-emitting region 510 and the anode 300.

[0044] A green light-emitting layer 513 may be provided between the white light-emitting layer 511 corresponding to the green color resist 720 in the first light-emitting region 510 and the cathode 600, and between the white light-emitting layer 511 and the anode 300. A red light-emitting layer 512 may be provided between the white light-emitting layer 511 corresponding to the red color resist 710 in the first light-emitting region 510 and the cathode 600, and between the white light-emitting layer 511 and the anode 300.

[0045] The present invention further discloses a manufacturing method for a display panel, which can be used to manufacture the above-mentioned display panel, for which the present invention provides the following design: As shown in FIG. 7 and FIG. 8, the present invention further discloses a method for manufacturing a display panel 100, which is a method for manufacturing a display panel according to a first embodiment of the present invention, S1, forming a plurality of arrayed anodes on a base substrate; S2 depositing a light-shielding material on the anode, and forming a pixel definition layer disposed on the underlying substrate by a mask blank, the pixel definition layer located between two adjacent anodes is a non-aperture region, and an aperture region is formed between two adjacent non-aperture regions of the pixel definition layer; S3, in which a light-emitting layer is formed in the opening region, in which a first light-emitting region and a second light-emitting region are arranged in parallel, the first light-emitting region includes a white light-emitting layer made of a white light-emitting material, the second light-emitting region includes a blue light-emitting layer, and the blue light-emitting layer is made of a blue light-emitting material; S4 forming a cathode on the light-emitting layer; S5 forming a filter layer on the cathode, so that the blue color resist of the filter layer is disposed on the blue light-emitting layer in the second light-emitting region, and the green color resist and the red color resist of the filter layer are disposed on the white light-emitting layer in the first light-emitting region; and S6 forming a sealing layer on the optical filter to obtain a display panel.

[0046] As shown in FIG. 9, a manufacturing method for a display panel according to a second embodiment of the present invention is disclosed. The difference from the manufacturing method according to the first embodiment is that a main light-emitting layer 522 is formed between a blue light-emitting layer 521 and an anode 300, and the main light-emitting layer 522 and the white light-emitting layer 511 in the first light-emitting region 510 are manufactured in the same layer.

[0047] Specifically, in step S3, S31, forming a light-emitting layer in parallel with a first light-emitting region and a second light-emitting region in the opening, the first light-emitting region including a white light-emitting layer made of a white light-emitting material, and the second light-emitting region including a main light-emitting layer, the main light-emitting layer being made of a white light-emitting material; A blue light-emitting layer is disposed on the main light-emitting layer, and the blue light-emitting layer is made of a blue light-emitting material. S32.

[0048] The white light-emitting layer 511 in the first light-emitting region 510 and the main light-emitting layer 522 in the second light-emitting region 520 are fabricated as the same layer, and the blue light-emitting layer 521 is fabricated on the main light-emitting layer 522 by a printing process.

[0049] Furthermore, as shown in FIG. 10, a manufacturing method for a display panel according to a third embodiment of the present invention is disclosed, which differs from the manufacturing method according to the second embodiment in that a step of forming an auxiliary light-emitting layer 523 is further added before forming the main light-emitting layer 522.

[0050] Specifically, before step S31, An auxiliary light-emitting layer is formed in the opening region, and the auxiliary light-emitting layer includes S30 made of a blue light-emitting material.

[0051] S31: Forming a light-emitting layer in which a first light-emitting region and a second light-emitting region are arranged in parallel within the opening region, the first light-emitting region includes a white light-emitting layer made of a white light-emitting material, and the second light-emitting region includes a main light-emitting layer, the main light-emitting layer being made of a white light-emitting material.

[0052] The auxiliary light-emitting layer 523 is disposed between the anode 300 and the main light-emitting layer 522 .

[0053] It should be explained that the limitations on each step of the present solution do not limit the order of the steps, provided that they do not affect the implementation of the specific solution; the steps written in front may be executed first, later, or even simultaneously; as long as the present solution can be implemented, any of them should be considered to fall within the scope of protection of the present invention.

[0054] It should be noted that the inventive concept of the present invention can be formed into numerous embodiments, but due to the limited space of the application documents, it is not possible to list them all. Therefore, under the premise that there are no conflicts, new embodiments can be formed by arbitrarily combining each of the embodiments or each of the technical features described above, and after combining each of the embodiments or technical features, the conventional technical effects can be enhanced.

[0055] The above is a further detailed description of the present invention with reference to specific preferred embodiments, and the specific implementation of the present invention cannot be deemed to be limited to these descriptions alone. Those skilled in the art to which the present invention pertains may make some simple deductions or substitutions without departing from the concept of the present invention, and all of them should be considered to fall within the protection scope of the present invention.

Claims

1. A base substrate; anodes arranged in a matrix on the base substrate; a pixel definition layer disposed on the underlying substrate, the pixel definition layer including an aperture region and a non-aperture region, the non-aperture region being disposed between two adjacent anodes; a light-emitting layer disposed within the open region; a cathode covering the light-emitting layer and the pixel-defining layer; a filter layer disposed on one side of the cathode away from the base substrate; the light-emitting layer includes a first light-emitting region and a second light-emitting region, the first light-emitting region is disposed corresponding to a red color resist and a green color resist in the filter layer, the second light-emitting region is disposed corresponding to a blue color resist in the filter layer, and the second light-emitting region includes a blue light-emitting layer, the blue light-emitting layer is made of a blue light-emitting material; The first light-emitting region includes a white light-emitting layer made of a white light-emitting material, the white light-emitting layer is disposed corresponding to the red color resist and the green color resist respectively; the second light-emitting region further includes a main light-emitting layer, the main light-emitting layer is made of a white light-emitting material, and the main light-emitting layer is disposed between the anode and the blue light-emitting layer; A display panel characterized by:

2. The first light-emitting region includes a white light-emitting layer made of a white light-emitting material, and the white light-emitting layer is disposed corresponding to the red color resist and the green color resist, respectively; 2. The display panel according to claim 1 .

3. The luminance of the first light-emitting region is the same as that of the second light-emitting region.

2. The display panel according to claim 1 .

4. The second light-emitting region further includes an auxiliary light-emitting layer, the auxiliary light-emitting layer is disposed between the anode and the main light-emitting layer, and the auxiliary light-emitting layer is made of a blue light-emitting material; 4. The display panel according to claim 3.

5. the sum of the thickness of the red color resist and the thickness of the white light emitting layer is equal to or greater than the sum of the thicknesses of the blue color resist, the main light emitting layer, the auxiliary light emitting layer and the blue light emitting layer; the sum of the thickness of the green color resist and the thickness of the white light emitting layer is equal to or greater than the sum of the thicknesses of the blue color resist, the main light emitting layer, the auxiliary light emitting layer and the blue light emitting layer; Wherein, the thickness of the white light emitting layer is equal to the thickness of the main light emitting layer; 5. The display panel according to claim 4.

6. the second light-emitting region includes a primary light-emitting layer, the primary light-emitting layer is made of a white light-emitting material, and the primary light-emitting layer is disposed between the blue light-emitting layer and a cathode; 2. The display panel according to claim 1 .

7. The main light-emitting layer is disposed in the same layer as the white light-emitting layer in the first light-emitting region.

2. The display panel according to claim 1 .

8. The thickness of the green color resist and the thickness of the red color resist in the filter layer are both greater than the thickness of the blue color resist.

2. The display panel according to claim 1 .

9. a thickness of the red color resist is equal to a sum of a thickness of the blue light-emitting layer and a thickness of the blue color resist, and a thickness of the green color resist is equal to a sum of a thickness of the blue light-emitting layer and a thickness of the blue color resist; 2. The display panel according to claim 1 .

10. the first light-emitting region further comprises a red light-emitting layer and a green light-emitting layer, the red light-emitting layer being made of a red light-emitting material and the green light-emitting layer being made of a green light-emitting material; The red light emitting layer corresponds to the red color resist in the filter layer and is disposed between the white light emitting layer and the cathode, and the green light emitting layer corresponds to the green color resist in the filter layer and is disposed between the white light emitting layer and the cathode; 2. The display panel according to claim 1 .

11. the green light-emitting layer is also provided between the white light-emitting layer corresponding to the green color resist and the anode; The red light emitting layer is also provided between the white light emitting layer corresponding to the red color resist and the anode.

11. The display panel according to claim 10.

12. The thickness of the blue light-emitting layer is 5 nm-15 nm; 2. The display panel according to claim 1 .

13. A display panel according to any one of claims 1 to 12; a circuit board electrically connected to the display panel, The display panel includes: A base substrate; anodes arranged in a matrix on the base substrate; a pixel definition layer disposed on the underlying substrate, the pixel definition layer including an aperture region and a non-aperture region, the non-aperture region being disposed between two adjacent anodes; a light-emitting layer disposed within the open region; a cathode covering the light-emitting layer and the pixel-defining layer; a filter layer disposed on one side of the cathode away from the base substrate; the light-emitting layer includes a first light-emitting region and a second light-emitting region, the first light-emitting region is disposed corresponding to a red color resist and a green color resist in the filter layer, the second light-emitting region is disposed corresponding to a blue color resist in the filter layer, and the second light-emitting region includes a blue light-emitting layer, and the blue light-emitting layer is made of a blue light-emitting material; A display device comprising:

14. A method for manufacturing a display panel, comprising the steps of: fabricating a plurality of arrayed anodes on an underlying substrate; depositing a light-shielding material on the anode, and forming a pixel definition layer disposed on the underlying substrate by a mask blank, the pixel definition layer located between two adjacent anodes is a non-aperture region, and an aperture region is formed between two adjacent non-aperture regions of the pixel definition layer; forming a light-emitting layer in the opening region, the light-emitting layer including a first light-emitting region and a second light-emitting region arranged in parallel, the first light-emitting region including a white light-emitting layer made of a white light-emitting material, the second light-emitting region including a blue light-emitting layer made of a blue light-emitting material; forming a cathode on the light-emitting layer; forming a filter layer on the cathode, so that the blue color resist of the filter layer is disposed on the blue light-emitting layer in the second light-emitting region, and the green color resist and the red color resist of the filter layer are disposed on the white light-emitting layer in the first light-emitting region; forming a light-emitting layer in which a first light-emitting region and a second light-emitting region are arranged in parallel in the opening region, the first light-emitting region includes a white light-emitting layer made of a white light-emitting material, the second light-emitting region includes a blue light-emitting layer, and the blue light-emitting layer is made of a blue light-emitting material; forming a light-emitting layer in the opening, the light-emitting layer including a first light-emitting region and a second light-emitting region arranged in parallel, the first light-emitting region including a white light-emitting layer made of a white light-emitting material, the second light-emitting region including a main light-emitting layer made of a white light-emitting material; and disposing a blue light-emitting layer on the primary light-emitting layer. A method for manufacturing a display panel comprising the steps of:

15. forming the filter layer on the cathode, so that the blue color resist of the filter layer is disposed on the blue light-emitting layer in the second light-emitting region, and the green color resist and the red color resist of the filter layer are disposed on the white light-emitting layer in the first light-emitting region; and forming a sealing layer on the filter to obtain a display panel. The method for manufacturing a display panel according to claim 14 .

16. The white light-emitting layer in the first light-emitting region and the main light-emitting layer in the second light-emitting region are manufactured as the same layer, and the blue light-emitting layer is manufactured on the main light-emitting layer by a printing process; The method for manufacturing a display panel according to claim 15 .

17. forming a light-emitting layer in the opening, the light-emitting layer including a first light-emitting region and a second light-emitting region arranged in parallel, the first light-emitting region including a white light-emitting layer made of a white light-emitting material, the second light-emitting region including a main light-emitting layer, the main light-emitting layer being made of a white light-emitting material; forming an auxiliary light-emitting layer in the opening region, the auxiliary light-emitting layer being made of a blue light-emitting material; forming a light-emitting layer in the opening region, the light-emitting layer including a first light-emitting region and a second light-emitting region arranged in parallel, the first light-emitting region including a white light-emitting layer made of a white light-emitting material, the second light-emitting region including a main light-emitting layer made of a white light-emitting material; The auxiliary light-emitting layer is disposed between the anode and the main light-emitting layer. The method for manufacturing a display panel according to claim 15 .

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