Display panel and display device

The double-layer display panel's alternating display and light-transmitting design solves the problem of insufficient charging of TFT-LCD pixels at high refresh rates, improves stability and brightness uniformity, and extends service life.

CN115793329BActive Publication Date: 2025-10-10HKC CORP LTD
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Patent Information

Application Number
CN202211631064.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-19
Publication Date
2025-10-10
Estimated Expiration
2042-12-19

AI Technical Summary

Technical Problem

At high refresh rates, pixels in TFT-LCD display devices frequently become undercharged, affecting display stability.

Method used

A double-layer display panel structure is adopted. The first sub-display panel and the second sub-display panel display and transmit light alternately. Only the alternate rows are charged, and the other rows are transmittance, which reduces the number of charging rows and the number of pixels per column and increases the charging time.

Benefits of technology

Without reducing the refresh rate, the probability of insufficient pixel charging is reduced, the display stability and brightness uniformity are improved, the aperture occlusion is reduced, and the service life is extended.

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Abstract

The application provides a display panel and a display device, and relates to the technical field of display technology. The display panel comprises a first polaroid, a first sub-display panel, a second sub-display panel and a second polaroid. Each row of pixel electrodes of the first sub-display panel and the second sub-display panel corresponds to each other, each row of pixel electrodes of the first sub-display panel and the corresponding row of pixel electrodes of the second sub-display panel overlap; the first sub-display panel comprises a plurality of first target rows, and the second sub-display panel comprises a plurality of second target rows; when the display panel displays, the first target rows and the second target rows are used for displaying a picture, and other rows of the first sub-display panel and the second sub-display panel are used for transmitting light; the pixel area of the first target rows and the projection area of the pixel area of other rows of the second sub-display panel except the second target rows overlap on the first polaroid. The technical scheme provided by the application can reduce the probability of insufficient charging of pixels.
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Description

Technical Field

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

[0002] As display technology continues to mature, display devices such as Thin Film Transistor Liquid Crystal Display (TFT-LCD) are increasingly being used in various fields.

[0003] For TFT-LCD, increasing the refresh rate can significantly improve the stability of the display image. However, the higher the refresh rate, the shorter the pixel charging time, and the greater the probability of insufficient pixel charging. Summary of the Invention

[0004] In view of this, the present application provides a display panel and a display device for reducing the probability of insufficient pixel charging without reducing the refresh rate.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a display panel, comprising: a first polarizer, a first sub-display panel, a second sub-display panel, and a second polarizer;

[0006] The first sub-display panel and the second sub-display panel are laminated and located between the first polarizer and the second polarizer;

[0007] Each row of pixel electrodes of the first sub-display panel corresponds to each row of pixel electrodes of the second sub-display panel one-to-one, and a projection area of ​​each row of pixel electrodes of the first sub-display panel on the first polarizer overlaps with a projection area of ​​the corresponding row of pixel electrodes of the second sub-display panel on the first polarizer;

[0008] The first sub-display panel includes multiple rows of first target rows, and the second sub-display panel includes multiple rows of second target rows. When the display panel is displaying, the first target rows and the second target rows are used to display the picture, and the other rows of the first sub-display panel and the second sub-display panel are used to transmit light; the projection area of ​​the pixel area of ​​the first target row on the first polarizer overlaps with the projection area of ​​the pixel area of ​​the other rows of the second sub-display panel except the second target row on the first polarizer.

[0009] As an optional implementation manner of the embodiment of the present application, the first target row is the odd row of the first sub-display panel, and the second target row is the even row of the second sub-display panel, or the first target row is the even row of the first sub-display panel, and the second target row is the odd row of the second sub-display panel.

[0010] As an optional implementation of the embodiment of the present application, the first target row and the second target row are adjustable.

[0011] As an optional implementation of the embodiment of the present application, the pixel electrodes of the first sub-display panel correspond one-to-one to the pixel electrodes of the second sub-display panel, and the projection area of ​​each pixel electrode of the first sub-display panel on the first polarizer overlaps with the projection area of ​​the corresponding pixel electrode of the second sub-display panel on the first polarizer.

[0012] As an optional implementation of the embodiment of the present application, the positions of the first target row and the second target row are fixed, the first sub-display panel has no corresponding gate lines and switches for other rows except the first target row, and the second sub-display panel has no corresponding gate lines and switches for other rows except the second target row.

[0013] As an optional implementation of the embodiment of the present application, the first sub-display panel is a COA display panel.

[0014] As an optional implementation of the embodiment of the present application, the first sub-display panel includes: a first substrate, a color resist layer, a first liquid crystal layer, a first pixel electrode, and a second substrate;

[0015] The first substrate and the second substrate are arranged opposite to each other, the first liquid crystal layer is located between the first substrate and the second substrate, the color resist layer is located on a side of the first substrate facing the second substrate, and the first pixel electrode is located on a side of the second substrate facing the first substrate;

[0016] The second sub-display panel includes: a third substrate, a second liquid crystal layer, a second pixel electrode and a fourth substrate;

[0017] The third substrate and the fourth substrate are arranged opposite to each other, the second liquid crystal layer is located between the third substrate and the fourth substrate, and the second pixel electrode is located on a side of the fourth substrate facing the third substrate.

[0018] As an optional implementation of the embodiment of the present application, the color resist layer includes multiple color resists corresponding to each first pixel electrode, a light shielding film is arranged between adjacent color resists, and the projection area of ​​the spacing area between each first pixel electrode on the first polarizer is located within the projection area of ​​the light shielding film on the first polarizer.

[0019] As an optional implementation of the embodiment of the present application, the axes of the first polarizer and the second polarizer are perpendicular.

[0020] In a second aspect, an embodiment of the present application provides a display device, comprising a backlight source and a display panel as described in the first aspect or any one of the first aspects above, wherein the backlight source is located on a side of the second polarizer facing away from the first polarizer.

[0021] The display panel and display device provided in the embodiments of the present application include a first polarizer, a first sub-display panel, a second sub-display panel, and a second polarizer. The first sub-display panel and the second sub-display panel are arranged in a laminated manner, with the first sub-display panel and the second sub-display panel located between the first polarizer and the second polarizer. Each row of pixel electrodes of the first sub-display panel corresponds one-to-one with each row of pixel electrodes of the second sub-display panel. The projection area of ​​each row of pixel electrodes of the first sub-display panel on the first polarizer overlaps with the projection area of ​​the corresponding row of pixel electrodes of the second sub-display panel on the first polarizer. The first sub-display panel includes multiple rows of first target rows, and the second sub-display panel includes multiple rows of second target rows. When the display panel is displaying, the first target rows and the second target rows are used to display the image, and the other rows of the first and second sub-display panels are used to transmit light. The projection area of ​​the pixel area of ​​the first target row on the first polarizer overlaps with the projection area of ​​the pixel area of ​​the other rows of the second sub-display panel except the second target row on the first polarizer. In the above technical solution, the projection area of ​​the pixel electrodes of the first target row on the first polarizer overlaps with the projection areas of the pixel electrodes of the other rows of the second sub-display panel, excluding the second target row, on the first polarizer. Thus, the first and second target rows correspond to all rows of the display device, and their corresponding rows do not overlap. Since only the pixel areas of the first and second target rows display the image during display, the other rows of the first and second sub-display panels only need to allow light to pass through. Therefore, when displaying an image, only the pixels of the first and second target rows need to be charged, while the other rows of the first and second sub-display panels do not need to be charged. This means that when displaying an image, the number of rows that need to be charged in both the first and second sub-display panels is reduced, and the number of pixels that need to be charged in each column of the first and second sub-display panels is reduced. While the refresh rate remains unchanged, the total charging time for each column of pixels in the first and second sub-display panels remains constant. As the number of pixels that need to be charged in each column decreases, the charging time for each pixel in each column increases. Therefore, this solution can reduce the probability of insufficient pixel charging in the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of a display panel in the row direction provided by an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the relationship between the first sub-display panel and the second sub-display panel provided in an embodiment of the present application when displaying an image.

[0025] Description of reference numerals:

[0026] 1- backlight; 2- first polarizer;

[0027] 3-first sub-display panel; 4-second sub-display panel;

[0028] 5- second polarizer;

[0029] 31-first target row; 32-first substrate;

[0030] 33-color resist layer; 34-first common electrode;

[0031] 35-first liquid crystal layer; 36-first pixel electrode;

[0032] 37- second substrate;

[0033] 41-second target row; 42-third substrate;

[0034] 43-second common electrode; 44-second liquid crystal layer;

[0035] 45-second pixel electrode; 46-fourth substrate;

[0036] 331-color resist; 332-light shield. DETAILED DESCRIPTION

[0037] The following describes the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. The terms used in the implementation methods of the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0038] The display device in the embodiment of the present application may be a liquid crystal display device or other non-liquid crystal display device. This application will hereinafter use the liquid crystal display device as an example for illustrative description.

[0039] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the display device provided in the embodiment of the present application may include a display panel and a backlight source 1.

[0040] The display panel may include: a first polarizer 2 , a first sub-display panel 3 , a second sub-display panel 4 and a second polarizer 5 .

[0041] The first sub-display panel 3 and the second sub-display panel 4 are laminated together, the first polarizer 2 is located on the side of the first sub-display panel 3 away from the second sub-display panel 4 , and the second polarizer 5 is located on the side of the second sub-display panel 4 away from the first sub-display panel 3 .

[0042] The first and second sub display panels can be twisted nematic (TN) display panels, vertical alignment (VA) display panels, in-plane switching (IPS) display panels, fringe field switching (FFS) display panels, or the like. In the following embodiments, the first and second sub display panels are taken as examples of TN display panels.

[0043] The backlight 1 is located on the side of the second polarizer 5 away from the first polarizer 2, and is configured to provide backlight for the display panel.

[0044] The first polarizer 2 can be perpendicular to the axis of the second polarizer 5.

[0045] Each row of pixel electrodes of the first sub display panel 3 can correspond to each row of pixel electrodes of the second sub display panel 4. The projection area of each row of pixel electrodes of the first sub display panel 3 on the first polarizer 2 can overlap the projection area of the corresponding row of pixel electrodes of the second sub display panel 4 on the first polarizer 2.

[0046] The first sub display panel can include a plurality of first target rows and a plurality of non-display rows, and the second sub display panel can include a plurality of second target rows and a plurality of non-display rows. When the display device displays, the first and second target rows are used to display the picture, and the other rows (i.e. non-display rows) of the first and second sub display panels are used to transmit light. For example, the non-display rows of the first and second sub display panels can be fully bright.

[0047] The projection areas of each pixel electrode of the first target row of the first sub-display panel 3 on the first polarizer 2 can overlap with the projection areas of each pixel electrode of the other rows of the second sub-display panel 4 except the second target row on the first polarizer 2; correspondingly, the projection areas of each pixel electrode of the other rows of the first sub-display panel 3 on the first polarizer 2 can overlap with the projection areas of the pixel electrode of the second target row of the second sub-display panel 4 on the first polarizer 2. In this way, the first target row and the second target row jointly correspond to all rows of the display device, and the corresponding rows do not overlap. In this way, when displaying an image, only the pixels of the first target row 1 and the second target row need to be charged, and the other rows of the first sub-display panel 3 and the second sub-display panel 4 do not need to be charged. That is, when displaying an image, the number of rows that need to be charged in the first sub-display panel 3 and the second sub-display panel 4 are reduced, and for each column of the first sub-display panel 3 and the second sub-display panel 4, the number of pixels that need to be charged is reduced. When the refresh rate remains unchanged, the total charging time of each column of pixels of the first sub-display panel 3 and the second sub-display panel 4 is fixed. Since the number of pixels that need to be charged in each column is reduced, the charging time of each pixel in each column will increase, thereby reducing the probability of insufficient charging of pixels in the display device.

[0048] Figure 2 A schematic diagram of the relationship between the first sub-display panel and the second sub-display panel when displaying a picture is provided in an embodiment of the present application, as shown in FIG. Figure 2 As shown, the odd-numbered rows of the first sub-display panel 3 are the first target rows 31, and the even-numbered rows of the second sub-display panel 4 are the second target rows 41. In this way, the rows of the display images of the first sub-display panel 3 and the second sub-display panel 4 (i.e., the first target rows 31 and the second target rows 41) are arranged alternately, which is beneficial to improving the uniformity of the brightness of the display image.

[0049] The first target row 31 may also be an even-numbered row of the first sub-display panel 3 , and correspondingly, the second target row 41 may be an odd-numbered row of the second sub-display panel 4 .

[0050] The first target rows 31 of the first sub-display panel 3 and the second target rows 41 of the second sub-display panel 4 may also be arranged in other ways. For example, the first target rows 31 of the first sub-display panel 3 are rows 1, 2, 5, 6, 9, 10, etc., and the corresponding second target rows 41 of the second sub-display panel 4 are rows 3, 4, 7, 8, 11, 12, etc. In the following description of this embodiment, the first target rows 31 of the first sub-display panel 3 are odd-numbered rows, and the second target rows 41 of the second sub-display panel 4 are even-numbered rows.

[0051] The positions of the first target row 31 and the second target row 41 can be adjusted. For example, after a period of use, the first target row 31 of the first sub-display panel 3 can be adjusted to an even row, and the second target row 41 of the second sub-display panel 4 can be adjusted to an odd row accordingly, so that after the devices corresponding to the odd rows of the first sub-display panel 3 (i.e., the original first target row 31) and the even rows of the second sub-display panel 4 (i.e., the original second target row 41) are aged due to use, they can still be displayed through the even rows of the first sub-display panel 3 and the odd rows of the second sub-display panel 4 (i.e., the original other rows), thereby extending the service life of the display device.

[0052] The positions of the first target row 31 and the second target row 41 can also be fixed, so that the other rows of the first sub-display panel 3 except the first target row 31 and the other rows of the second sub-display panel 4 except the second target row 41 can be used only to maintain constant brightness. Therefore, the other rows of the first sub-display panel 3 except the first target row 31 and the other rows of the second sub-display panel 4 except the second target row 41 can be provided with gate lines and switches. In this way, each pixel area of ​​the display device corresponds to only one set of switches and traces, compared with each pixel area of ​​the display device corresponding to two sets of switches and traces (i.e., the switches and traces of the first sub-display panel 3, and the switches and traces of the second sub-display panel 4), the occlusion of the switches and traces in each pixel area can be reduced (due to the existence of errors, the two sets of switches and traces will not completely overlap in the direction perpendicular to the display screen, so the occlusion of the pixel area by the two sets of switches and traces is greater than the occlusion of the pixel area by one set of switches and traces), thereby improving the aperture ratio of the display device.

[0053] This embodiment is described below by taking the adjustable positions of the first target row 31 and the second target row 41 as an example.

[0054] Figure 3 A schematic diagram of the structure of a display panel in the row direction provided by an embodiment of the present application is shown in FIG. Figure 3 As shown, the first sub-display panel 3 of the display panel may include: a first substrate 32 , a color resist layer 33 , a first common electrode 34 , a first liquid crystal layer 35 , a first pixel electrode 36 and a second substrate 37 .

[0055] The first substrate 32 and the second substrate 37 are disposed opposite to each other, and the first liquid crystal layer 35 is located between the first substrate 32 and the second substrate 37 .

[0056] The first substrate 32 and the second substrate 37 can be made of quartz, glass, organic polymer, silicon, metal or other semiconductor materials.

[0057] The color resist layer 33 is located on the side of the first substrate 32 facing the second substrate 37. The color resist layer 33 may include a plurality of spaced color resists 331. A light shielding film 332 (i.e., BM) may be provided at both ends of each color resist 331. The projection area of ​​the spaced area between each first pixel electrode 36 on the first polarizer 2 may be located within the projection area of ​​each light shielding film 332 on the first polarizer 2. In this way, light entering from the spaced area between each first pixel electrode 36 will be blocked by the corresponding light shielding film 332, thereby reducing the probability of light leakage from the first sub-display panel 3.

[0058] The color resist 331 may be a B color resist, a G color resist, or an R color resist, and the light shielding film 332 may be a black matrix formed of materials such as chromium, chromium oxide, and black resin.

[0059] The first common electrode 34 is located on a side of the color resist layer 33 facing the second substrate 37 , and covers each color resist 331 and each light shielding film 332 .

[0060] The first pixel electrodes 36 are located on a side of the second substrate 37 facing the first substrate 32 , and the first pixel electrodes may be arranged in an array.

[0061] The second sub-display panel 4 may include a third substrate 42 , a second common electrode 43 , a second liquid crystal layer 44 , a second pixel electrode 45 and a fourth substrate 46 .

[0062] The third substrate 42 and the fourth substrate 46 are disposed opposite to each other, and the second liquid crystal layer 44 is located between the third substrate 42 and the fourth substrate 46 .

[0063] The third substrate 42 and the fourth substrate 46 may be made of quartz, glass, organic polymer, silicon, metal or other semiconductor materials.

[0064] The second common electrode 43 is located on a side of the third substrate 42 facing the fourth substrate 46 .

[0065] The second pixel electrodes 45 are located on the side of the fourth substrate 46 facing the third substrate 42, and the second pixel electrodes 45 can be arranged in an array. The first pixel electrodes 36 can correspond one-to-one with the second pixel electrodes 45, and the projection area of ​​each first pixel electrode 36 on the first polarizer 2 can overlap with the projection area of ​​the corresponding second pixel electrode 45 on the first polarizer 2. In this way, the display areas of each first pixel electrode 36 and the corresponding second pixel electrode 45 overlap, so that a single color filter 331 of the color filter layer 33 can simultaneously filter the light corresponding to two pixel electrodes (i.e., the first pixel electrode 36 and the corresponding second pixel electrode 45), thereby reducing the complexity of the color filter layer 33.

[0066] The first sub-display panel 3 can be a COA display panel, so that the color resist layer 33 can be arranged on the side of the second substrate 37 facing the first substrate 32. This can reduce the impact caused by the alignment problem between the first substrate 32 and the second substrate 37, and reduce the difficulty of the box alignment process during the preparation of the first sub-display panel 3.

[0067] The display panel and display device provided in the embodiments of the present application include a first polarizer, a first sub-display panel, a second sub-display panel, and a second polarizer. The first sub-display panel and the second sub-display panel are arranged in a laminated manner, with the first sub-display panel and the second sub-display panel located between the first polarizer and the second polarizer. Each row of pixel electrodes of the first sub-display panel corresponds one-to-one with each row of pixel electrodes of the second sub-display panel. The projection area of ​​each row of pixel electrodes of the first sub-display panel on the first polarizer overlaps with the projection area of ​​the corresponding row of pixel electrodes of the second sub-display panel on the first polarizer. The first sub-display panel includes multiple rows of first target rows, and the second sub-display panel includes multiple rows of second target rows. When the display panel is displaying, the first target rows and the second target rows are used to display the image, and the other rows of the first and second sub-display panels are used to transmit light. The projection area of ​​the pixel area of ​​the first target row on the first polarizer overlaps with the projection area of ​​the pixel area of ​​the other rows of the second sub-display panel except the second target row on the first polarizer. In the above technical solution, the projection area of ​​the pixel electrodes of the first target row on the first polarizer overlaps with the projection areas of the pixel electrodes of the other rows of the second sub-display panel, excluding the second target row, on the first polarizer. Thus, the first and second target rows correspond to all rows of the display device, and their corresponding rows do not overlap. Since only the pixel areas of the first and second target rows display the image during display, the other rows of the first and second sub-display panels only need to allow light to pass through. Therefore, when displaying an image, only the pixels of the first and second target rows need to be charged, while the other rows of the first and second sub-display panels do not need to be charged. This means that when displaying an image, the number of rows that need to be charged in both the first and second sub-display panels is reduced, and the number of pixels that need to be charged in each column of the first and second sub-display panels is reduced. While the refresh rate remains unchanged, the total charging time for each column of pixels in the first and second sub-display panels remains constant. As the number of pixels that need to be charged in each column decreases, the charging time for each pixel in each column increases. Therefore, this solution can reduce the probability of insufficient pixel charging in the display device.

[0068] The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0069] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0070] In the embodiments provided in this application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0071] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0072] In the description of this application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0073] Furthermore, in the description of this application, unless otherwise specified, "plurality" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c" can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0074] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0075] In addition, in the description of this application specification and the appended claims, the terms "first," "second," "third," etc. are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that shown or described herein.

[0076] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: include: a first polarizer, a first sub-display panel, a second sub-display panel, and a second polarizer; The first sub-display panel and the second sub-display panel are laminated and located between the first polarizer and the second polarizer; Each row of pixel electrodes of the first sub-display panel corresponds to each row of pixel electrodes of the second sub-display panel one-to-one, and a projection area of ​​each row of pixel electrodes of the first sub-display panel on the first polarizer overlaps with a projection area of ​​the corresponding row of pixel electrodes of the second sub-display panel on the first polarizer; The first sub-display panel includes multiple rows of first target rows, and the second sub-display panel includes multiple rows of second target rows. When the display panel is displaying, the first target rows and the second target rows are used to display the picture, and the other rows of the first sub-display panel and the second sub-display panel are used to transmit light; the projection area of ​​the pixel area of ​​the first target row on the first polarizer overlaps with the projection area of ​​the pixel area of ​​the other rows of the second sub-display panel except the second target row on the first polarizer.

2. The display panel according to claim 1, wherein: The first target row is the odd row of the first sub-display panel and the second target row is the even row of the second sub-display panel, or the first target row is the even row of the first sub-display panel and the second target row is the odd row of the second sub-display panel.

3. The display panel according to claim 1, wherein: The first target row and the second target row are adjustable.

4. The display panel according to claim 3, wherein: The pixel electrodes of the first sub-display panel correspond one-to-one to the pixel electrodes of the second sub-display panel, and the projection area of ​​each pixel electrode of the first sub-display panel on the first polarizer overlaps with the projection area of ​​the corresponding pixel electrode of the second sub-display panel on the first polarizer.

5. The display panel according to claim 1, wherein: The positions of the first target row and the second target row are fixed, and the other rows of the first sub-display panel except the first target row have no corresponding gate lines and switches, and the other rows of the second sub-display panel except the second target row have no corresponding gate lines and switches.

6. The display panel according to claim 1, wherein: The first sub-display panel is a COA display panel.

7. The display panel according to claim 1, wherein: The first sub-display panel includes: a first substrate, a color resist layer, a first liquid crystal layer, a first pixel electrode and a second substrate; The first substrate and the second substrate are arranged opposite to each other, the first liquid crystal layer is located between the first substrate and the second substrate, the color resist layer is located on a side of the first substrate facing the second substrate, and the first pixel electrode is located on a side of the second substrate facing the first substrate; The second sub-display panel includes: a third substrate, a second liquid crystal layer, a second pixel electrode and a fourth substrate; The third substrate and the fourth substrate are arranged opposite to each other, the second liquid crystal layer is located between the third substrate and the fourth substrate, and the second pixel electrode is located on a side of the fourth substrate facing the third substrate.

8. The display panel according to claim 7, wherein: The color resist layer includes a plurality of color resists corresponding to each first pixel electrode, a light shielding film is arranged between adjacent color resists, and the projection area of ​​the spacing area between each first pixel electrode on the first polarizer is located in the projection area of ​​the light shielding film on the first polarizer.

9. The display panel according to any one of claims 1 to 8, wherein: The axes of the first polarizer and the second polarizer are perpendicular to each other.

10. A display device, characterized in that: The display panel comprises a backlight source and the display panel according to any one of claims 1 to 9, wherein the backlight source is located on a side of the second polarizer facing away from the first polarizer.

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