Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a display area, a driving circuit is arranged on a first side of the display area, and the display area comprises a plurality of pixels arranged in an array. The plurality of pixels comprise blue pixels, red pixels and green pixels. A direction between the first side and a side opposite to the first side is defined as a column direction, a direction perpendicular to the column direction is defined as a row direction, in the column direction away from the first side in the display area, the blue pixels have a first structural variation trend corresponding to a first structural compensation current, the green pixels have a second structural variation trend corresponding to a second structural compensation current, and the red pixels have a third structural variation trend corresponding to a third structural compensation current. The first structural compensation current is greater than the second structural compensation current, and the second structural compensation current is greater than the third structural compensation current. The luminance attenuation difference of different color pixels is effectively alleviated, and the chroma uniformity of the display panel is improved.

Description

TECHNICAL FIELD

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

[0002] The chromaticity uniformity of a display screen is an important index for determining the quality of the display screen, and the current display panel has the problem of uneven display chromaticity, which cannot meet the actual display requirements. SUMMARY

[0003] Therefore, the present application aims to provide a display panel and a display device to improve the chromaticity uniformity of the display panel.

[0004] The present application provides a display panel, comprising:

[0005] A display area, a driving circuit is arranged on a first side of the display area, a plurality of pixels arranged in an array are arranged in the display area, a direction between the first side and an opposite side of the first side is taken as a column direction, and a direction perpendicular to the column direction is taken as a row direction; the plurality of pixels comprise blue pixels, red pixels and green pixels;

[0006] In the column direction away from the first side in the display area, the blue pixels have a first structural variation trend to make the blue pixels of the i-th row correspond to a first structural compensation current, the green pixels have a second structural variation trend to make the green pixels of the i-th row correspond to a second structural compensation current, and the red pixels have a third structural variation trend to make the red pixels of the i-th row correspond to a third structural compensation current, and the first structural compensation current > the second structural compensation current > the third structural compensation current.

[0007] The present application provides a display device, comprising the display panel described in the above embodiments.

[0008] The embodiment of the present application provides a display panel and a display device, the display panel comprises a display area, the first side of the display area has a drive circuit, the display area comprises a plurality of pixels arranged in an array, and the plurality of pixels comprise blue pixels, red pixels and green pixels. The direction between the first side and the opposite side of the first side is regarded as the column direction, the direction perpendicular to the column direction is regarded as the row direction, in the column direction away from the first side in the display area, the blue pixel luminance attenuation is greater than the green pixel luminance attenuation which is greater than the red pixel luminance attenuation, therefore, the blue pixel has a first structure change trend to make the i-th row of blue pixels correspond to a first structure compensation current, the green pixel has a second structure change trend to make the i-th row of green pixels correspond to a second structure compensation current, and the red pixel has a third structure change trend to make the i-th row of red pixels correspond to a third structure compensation current, the first structure compensation current is greater than the second structure compensation current which is greater than the third structure compensation current, so that the current of the blue pixel is greatly improved to greatly slow down the luminance attenuation, the current of the green pixel is moderately improved to moderately slow down the luminance attenuation, and the current of the red pixel is slightly improved to slightly slow down the luminance attenuation, which can effectively alleviate the luminance difference of the red pixels, the green pixels and the blue pixels, and improve the chroma uniformity of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0010] Figure 1 A current bare screen light emitting unit yield distribution schematic diagram;

[0011] Figure 2 A structure schematic diagram of a display panel provided by the embodiment of the present application;

[0012] Figure 3 A luminance attenuation schematic diagram of a light emitting unit in a display panel provided by the embodiment of the present application;

[0013] Figure 4 A structure diagram of another display panel provided by the embodiment of the present application;

[0014] Figure 5 A pixel luminance attenuation schematic diagram provided by the embodiment of the present application;

[0015] Figure 6 A pixel capacitance influence on luminance schematic diagram provided by the embodiment of the present application;

[0016] Figure 7 This application provides a schematic diagram of the structure of a driving transistor;

[0017] Figure 8 This is a schematic diagram illustrating the effect of width-to-length ratio on current, provided in an embodiment of this application.

[0018] Figure 9 This is a schematic diagram of the planar structure of a display device provided in an embodiment of this application. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] Secondly, this application provides a detailed description in conjunction with schematic diagrams. When detailing the embodiments of this application, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this application. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] As described in the background section, color uniformity is a crucial indicator of display quality. Current display panels suffer from color uniformity issues, failing to meet practical display requirements. (Reference) Figure 1 The figure shows a current yield distribution of bare screen light units (LUs). The horizontal axis represents the yield, and the vertical axis represents the percentage corresponding to the yield. As can be seen from the figure, only 15% of the display panels have a yield greater than 90%, which cannot meet the actual needs.

[0023] Through research, the inventors discovered that the integrated circuit (IC) is often located on one side of the display panel. From the side closer to the IC to the side farther from the IC, the brightness of the light-emitting unit gradually decreases, and the decrease in brightness varies for different colors of light-emitting units.

[0024] refer to Figure 2 The diagram shown is a schematic diagram of a display panel provided in an embodiment of this application. The driving circuit (black part) is located at the bottom of the display area (gray part) of the display panel. The brightness of the light-emitting unit gradually decreases from bottom to top.

[0025] Reference is made to Figure 3 As shown in FIG. 1, which is a luminance attenuation diagram of a light emitting unit in a display panel provided by an embodiment of the present application, the abscissa represents the number of pixel rows in the direction from the near IC to the far IC, and the ordinate represents the luminance attenuation percentage. As can be seen from the diagram, the luminance attenuation of the red pixels is relatively slow, the luminance attenuation of the green pixels is second, and the luminance attenuation of the blue pixels is the largest, resulting in a color deviation of the synthesized light and a non-uniform chromaticity of the display panel.

[0026] Based on this, the present application provides a display panel and a display device. The display panel includes a display area, the first side of the display area has a driving circuit, and the display area includes a plurality of pixels arranged in an array. The plurality of pixels includes blue pixels, red pixels, and green pixels. The direction between the first side and the opposite side of the first side is taken as the column direction, and the direction perpendicular to the column direction is taken as the row direction. In the column direction away from the first side in the display area, the luminance attenuation of the blue pixels is greater than that of the green pixels, which is greater than that of the red pixels. Therefore, the blue pixels have a first structural change trend, the green pixels have a second structural change trend, and the red pixels have a third structural change trend. The first structural compensation current corresponding to the i-th row of blue pixels, the second structural compensation current corresponding to the i-th row of green pixels, and the third structural compensation current corresponding to the i-th row of red pixels. The first structural compensation current is greater than the second structural compensation current, which is greater than the third structural compensation current. The current of the blue pixels is greatly improved, thereby greatly slowing down the luminance attenuation. The current of the green pixels is moderately improved, thereby moderately slowing down the luminance attenuation. The current of the red pixels is slightly improved, thereby slightly slowing down the luminance attenuation. This can effectively alleviate the luminance difference between the red pixels, the green pixels, and the blue pixels, and improve the chromaticity uniformity of the display panel.

[0027] In order to better understand the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

[0028] Reference is made to Figure 4 As shown in FIG. 2, which is a structural diagram of another display panel provided by an embodiment of the present application, the display panel includes a display area (AA). The first side of the display area has a driving circuit, which can be arranged in a non-display area (NA) outside the display area. The display area includes a plurality of pixels arranged in an array. The plurality of pixels includes blue (B) pixels, red (R) pixels, and green (G) pixels.

[0029] As the direction between the first side and the opposite side of the first side is the column direction (i.e. the longitudinal direction in the figure), the direction perpendicular to the column direction is the row direction (i.e. the transverse direction in the figure), in the column direction away from the first side in the display area (i.e. the upward direction), the blue pixels generally have a large luminance attenuation, the green pixels generally have a moderate luminance attenuation, and the red pixels generally have a small luminance attenuation, that is, the luminance attenuation of the blue pixels is greater than that of the green pixels, which is greater than that of the red pixels, resulting in a color deviation of the synthesized light, and the display panel displays a non-uniform chromaticity. This is because the pixel circuit wiring connected between the pixel and the driving circuit has a voltage drop, and the voltage drops of pixels of different colors are different, and the current sizes are different, resulting in different luminance attenuations of pixels of different colors.

[0030] In the embodiments of the present application, the number of pixel rows in the column direction away from the first side in the display area (i.e. the upward direction) can be sorted, and the larger the number of rows, the farther away from the driving circuit. The blue pixels have a first structural variation trend to correspond to the first structural compensation current, the green pixels have a second structural variation trend to correspond to the second structural compensation current, and the red pixels have a third structural variation trend to correspond to the third structural compensation current, where i is a positive integer. It can be understood that as i increases, the pixel gradually moves away from the driving circuit. The first structural compensation current is greater than the second structural compensation current, which is greater than the third structural compensation current, so that the current of the blue pixel is greatly improved to greatly slow down the luminance attenuation, the current of the green pixel is moderately improved to moderately slow down the luminance attenuation, and the current of the red pixel is slightly improved to slightly slow down the luminance attenuation, which can effectively alleviate the luminance difference of the red, green and blue pixels and improve the chromaticity uniformity of the display panel.

[0031] Of course, in the column direction away from the first side in the display area, i increases, that is, the distance between the pixel and the driving circuit increases, and the first structural compensation current, the second structural compensation current and the third structural compensation current each have an increasing trend to slow down the respective luminance attenuation trend and alleviate the luminance difference between the near-IC end and the far-IC end.

[0032] As a current compensation method, the first structural variation trend, the second structural variation trend and the third structural variation trend can each be a gradual increase in the pixel capacitance (Cst), thereby compensating for the voltage drop of the pixel and causing the pixels of different colors to decrease at an equal rate. The pixel capacitance is the capacitance between the pixel electrode (M1) and the common electrode (Mc), and the greater the pixel capacitance, the greater the current of the corresponding pixel and the greater the luminance.

[0033] Specifically, the increasing amplitude of the pixel capacitance of the blue pixel in the first structure variation trend can be greater than the increasing amplitude of the pixel capacitance of the green pixel in the second structure variation trend, which is greater than the increasing amplitude of the pixel capacitance of the red pixel in the third structure variation trend, so that the first pixel capacitance of the blue pixel in the ith row is greater than the second pixel capacitance of the green pixel in the ith row, which is greater than the third pixel capacitance of the red pixel in the ith row. In this way, the first pixel capacitance of the blue pixel is greatly improved, and the current and brightness are also greatly improved; the second pixel capacitance of the green pixel is moderately improved, and the current and brightness are also moderately improved; the third pixel capacitance of the red pixel is slightly improved, and the current and brightness are also slightly improved.

[0034] Specifically, the increasing amplitude of the pixel capacitance of the blue pixel in the first structure variation trend can be greater than the increasing amplitude of the pixel capacitance of the green pixel in the second structure variation trend, which is greater than the increasing amplitude of the pixel capacitance of the red pixel in the third structure variation trend, so that the first pixel capacitance of the blue pixel in the ith row is greater than the second pixel capacitance of the green pixel in the ith row, which is greater than the third pixel capacitance of the red pixel in the ith row. In this way, the first pixel capacitance of the blue pixel is greatly improved, and the current and brightness are also greatly improved; the second pixel capacitance of the green pixel is moderately improved, and the current and brightness are also moderately improved; the third pixel capacitance of the red pixel is slightly improved, and the current and brightness are also slightly improved.

[0035] Specifically, in the column direction away from the first side in the display area, the brightness decay can be fitted as a first-order function, and correspondingly, the distance between the ith row of pixels in the plurality of pixels and the first side edge of the display area is denoted as the pixel distance x. In the ith row of pixels, the first pixel capacitance C1 of the blue pixel, the second pixel capacitance C2 of the green pixel, and the third pixel capacitance C3 of the red pixel have respective corresponding relationships with the pixel distance x as follows: C1=k1*x+b1; C2=k2*x+b2; C3=k3*x+b3; k1, k2, and k3 are respectively a first slope, a second slope, and a third slope; b1, b2, and b3 are respectively a first constant, a second constant, and a third constant; and the first slope > the second slope > the third slope. Thus, the pixel capacitance is set using a first-order function, the parameter variation of the pixel capacitance generates a structure variation current, and the foregoing voltage drop compensation is achieved.

[0036] The first slope is in the range of [0.16, 0.25], the second slope is in the range of [0.05, 0.15], the third slope is in the range of [0.01, 0.04], the first constant is in the range of [11.9, 12.1], the second constant is in the range of [12.2, 12.4], and the third constant is in the range of (12.4, 12.6], so as to achieve a better voltage drop compensation effect. For different pixel circuits and different light-emitting devices, different slopes and constants can be set.

[0037] As an example, see reference Figure 5 The diagram shown is a pixel brightness attenuation illustration provided in an embodiment of this application. The horizontal axis represents the x-value, and the vertical axis represents the brightness attenuation percentage. The lines of different colors correspond to pixels of different colors. The attenuation formula for red (R) pixels is y = -0.0012x + 1.0005, the attenuation formula for blue (B) pixels is y = -0.0112x + 1.0245, and the attenuation formula for green (G) pixels is y = -0.0069x + 1.0063.

[0038] refer to Figure 6 The figure shows a schematic diagram of the effect of pixel capacitance on brightness provided in an embodiment of this application. The horizontal axis is pixel capacitance (Cst), and the vertical axis is the percentage increase in brightness. The lines of different colors correspond to pixels of different colors. It can be seen from the figure that the effect of pixel capacitance on pixels of different colors is almost the same. The formula for compensating for brightness by pixel capacitance can be expressed as y = 0.0534 * Cst - 1.665.

[0039] For each pixel, the attenuation amount can be set to equal the compensation amount, meaning the pixel's attenuation percentage equals the percentage increase in brightness caused by the pixel's capacitance. Since the attenuation percentage and the increase percentage change in opposite directions, they are actually opposites. Therefore, for a red pixel, 0.0534*C3-1.665=0.0012x-1.0005 can be set, and the third pixel capacitance C3=0.0225x+12.4438 can be calculated, i.e., setting k3 to 0.0225 and b3 to 12.4438; for a green pixel, 0.0534*Cst-1.665=0.0069x-1.0063 can be calculated... The capacitance of the second pixel is C2 = 0.1292x + 12.3352, which means k2 is set to 0.1292 and b2 is set to 12.3352. For the blue pixel, we can set 0.0534*Cst - 1.665 = 0.0112x - 1.0245. We can then calculate the capacitance of the first pixel as C1 = 0.2097x + 11.9944, which means k1 is set to 0.2097 and b1 is set to 11.9944.

[0040] In this embodiment, each pixel in the plurality of pixels includes a light-emitting device and a pixel circuit. The pixel circuit includes a driving transistor, the channel width of the driving transistor is used as the width of the driving transistor, and the channel length of the driving transistor is used as the length of the driving transistor. (Refer to...) Figure 7As shown in the structure diagram of the driving transistor provided by the embodiment of the present application, the channel layer 10 and the gate layer 20 are arranged in an overlapping manner, the region of the channel layer 10 overlapping with the gate layer 20 is used as a channel, and then the channel width and the channel length are determined according to the size of the region of the channel layer overlapping with the gate layer. Generally, the channel length L is determined according to the width of the channel layer 10, the channel width W is determined according to the width of the gate layer 20, and the ratio of the channel width W to the channel length L is used as the aspect ratio W / L.

[0041] As an example, reference is made to Figure 8 As shown in the diagram of the influence of the aspect ratio on the current provided by the embodiment of the present application, the abscissa is the aspect ratio W / L, the ordinate is the current, and the lines of different colors correspond to pixels of different colors respectively. As can be seen from the diagram, the current of the green pixel becomes larger and larger with the increase of the aspect ratio, the current of the red pixel remains unchanged with the increase of the aspect ratio, and the current of the blue pixel becomes smaller and smaller with the increase of the aspect ratio. The current IG of the green pixel is represented as IG=y=1.6696x+22.447, the current IB of the blue pixel is represented as IB=y=-11.93x+128.45, and the current IR of the red pixel is represented as IR=y=40.

[0042] As a current compensation manner, the first structure change trend is that the aspect ratio of the driving transistor corresponding to the blue pixel gradually decreases, so that the current of the blue pixel gradually increases. The second structure change trend is that the aspect ratio of the driving transistor corresponding to the green pixel gradually increases, so that the current of the blue pixel gradually increases. Further, the first aspect ratio of the driving transistor corresponding to the blue pixel of the i-th row > the third aspect ratio of the driving transistor corresponding to the red pixel of the i-th row > the second aspect ratio of the driving transistor corresponding to the green pixel of the i-th row. The third structure change trend is that the aspect ratio of the driving transistor corresponding to the red pixel remains unchanged, which can also have the same change trend as the blue pixel or the same change trend as the green pixel. In this way, the brightness compensation can be realized by the aspect ratio of the driving transistor, and the color deviation caused by the voltage drop can be reduced.

[0043] Specifically, the aspect ratio of the driving transistor can be changed by changing the channel length, that is, the first structure change trend is that the channel length GL of the driving transistor corresponding to the blue pixel gradually increases, so that the aspect ratio of the driving transistor corresponding to the blue pixel gradually decreases and the current IG of the blue pixel gradually increases. The second structure change trend is that the channel length BL of the driving transistor corresponding to the green pixel gradually decreases, so that the aspect ratio of the driving transistor corresponding to the green pixel gradually increases and the current IB of the green pixel gradually increases. In this way, the brightness compensation can be realized by a smaller change difficulty.

[0044] In specific implementation, when the brightness attenuation is fitted as a linear function in the column direction away from the first side in the display area, the distance between the pixel in the i-th row and the first edge of the display area is denoted as pixel distance x. Among the pixels in the i-th row, the first width-to-length ratio WL1 of the driving transistor corresponding to the blue pixel and the second width-to-length ratio WL2 of the driving transistor corresponding to the green pixel are respectively related to pixel distance x as follows: WL1 = k4*x + b4; WL2 = k5*x + b5; k4 and k5 are the fourth and fifth slopes, respectively; b4 and b5 are the fourth and fifth constants, respectively; the fourth slope < 0, and the fifth slope > 0. Thus, the width-to-length ratio of the driving transistor is set using a linear function, causing the change in the width-to-length ratio to generate a structural change current, thereby achieving the aforementioned voltage drop compensation.

[0045] The fourth slope ranges from [-0.25, -0.05], the fifth slope ranges from [0.05, 0.25], the fourth constant ranges from [10, 35], and the fifth constant ranges from [-40, -10], to achieve better voltage drop compensation. Different slopes and constants can be set for different pixel circuits and different light-emitting devices.

[0046] As an example, see reference Figure 5 As shown, the attenuation formula for red (R) pixels is y = -0.0012x + 1.0005, for blue (B) pixels it is y = -0.0112x + 1.0245, and for green (G) pixels it is y = -0.0069x + 1.0063. Figure 8 The brightness change is converted into a percentage. The initial WL is recorded as 3 / 14. Then the initial current value of the blue pixel is IB0 = 125.8936, and the initial current value of the green pixel is IG0 = 22.8048. Therefore, the percentage increase in brightness corresponding to the width-to-length ratio of each pixel is: blue pixel IB / IB0 = IB / 125.8936 = (-11.93x+128.45) / 125.8936, green pixel IG / IG0 = IG / 22.8048 = (1.6696x+22.447) / 22.8048.

[0047] For each pixel, the attenuation amount can be set equal to the compensation amount, that is, the attenuation percentage of the pixel is equal to the brightness increase percentage caused by the pixel capacitance. Since the change directions of the attenuation percentage and the increase percentage are different, they are actually opposite numbers. Therefore, for the blue pixel, IB / 125.8936=(-11.93x+128.45) / 125.8936=0.0112x-1.0245 can be calculated to obtain the first width-length ratio WL1=-0.1183x+21.5924, that is, k4 is set to -0.1183 and b4 is set to 21.5924; for the green pixel, IG / 22.8048=(1.6696x+22.447) / 22.8048=0.0069x-1.0063 can be calculated to obtain the second width-length ratio WL2=0.0943x-27.194, that is, k5 is set to 0.0943 and b5 is set to -27.194.

[0048] In the embodiments of the present application, the pixel capacitance and the width-length ratio of the driving transistor of each pixel can also be detected, and the detection mode can include a microscope or a SEM to monitor the first structure compensation current, the second structure compensation current and the third structure compensation current.

[0049] The embodiments of the present application provide a display panel, which includes a display area, a driving circuit on a first side of the display area, and a plurality of pixels arranged in an array in the display area, the plurality of pixels including blue pixels, red pixels and green pixels. A direction between the first side and an opposite side of the first side is taken as a column direction, and a direction perpendicular to the column direction is taken as a row direction. In the column direction away from the first side in the display area, the brightness attenuation of the blue pixels is greater than that of the green pixels, and the brightness attenuation of the green pixels is greater than that of the red pixels. Therefore, the blue pixels have a first structure change trend, the green pixels have a second structure change trend, and the red pixels have a third structure change trend. The first structure change trend corresponds to a first structure compensation current, the second structure change trend corresponds to a second structure compensation current, and the third structure change trend corresponds to a third structure compensation current. The first structure compensation current is greater than the second structure compensation current, and the second structure compensation current is greater than the third structure compensation current. The current of the blue pixels is greatly improved, thereby greatly slowing down the brightness attenuation. The current of the green pixels is moderately improved, thereby moderately slowing down the brightness attenuation. The current of the red pixels is slightly improved, thereby slightly slowing down the brightness attenuation. The display panel can effectively alleviate the brightness difference among the red pixels, the green pixels and the blue pixels, and improve the chroma uniformity of the display panel.

[0050] The embodiments of the present application also provide a display device, which includes the display panel described in the above embodiments.

[0051] Reference Figure 9A schematic diagram of a planar structure of a display device provided in an embodiment of the present application is shown in FIG. 1. As shown in the figure, the display device 1000 includes a display panel 100, which is any of the display panels 100 described in the above embodiments. The display device 1000 provided in an embodiment of the present application can be a mobile phone, a computer, a television, a vehicle-mounted display device, or any other display device having a display function, which is not specifically limited in the present application. The display device 1000 provided in an embodiment of the present application has the beneficial effects of the display panel 100 provided in an embodiment of the present application, and specific descriptions can be made with reference to the specific descriptions of the display panel in the above embodiments, which are not repeated here.

[0052] The above merely provides the preferred embodiments of the present application, and the present application is not intended to be limited to the above. Any person skilled in the art, without departing from the scope of the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application, or modify equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the scope of the technical scheme of the present application, shall still fall within the scope of protection of the technical scheme of the present application.

Claims

1. A display panel, characterized by, The display region has a first side with a driving circuit, and includes an array of multiple pixels in the display region, a direction between the first side and an opposite side of the first side being a column direction, and a direction perpendicular to the column direction being a row direction; the multiple pixels include blue pixels, red pixels, and green pixels; In a column direction away from the first side in the display region, the blue pixels have a first structural variation trend to make a first structural compensation current corresponding to the blue pixels in the i-th row, the green pixels have a second structural variation trend to make a second structural compensation current corresponding to the green pixels in the i-th row, and the red pixels have a third structural variation trend to make a third structural compensation current corresponding to the red pixels in the i-th row, the first structural compensation current > the second structural compensation current > the third structural compensation current; The first structural variation trend, the second structural variation trend, and the third structural variation trend are all gradual increases in pixel capacitance; A distance of the pixels in the i-th row from an edge of the first side of the display region is denoted as a pixel distance x, and a first pixel capacitance C1 of a blue pixel, a second pixel capacitance C2 of a green pixel, and a third pixel capacitance C3 of a red pixel in the i-th row have respective corresponding relationships with the pixel distance x as follows: C1=k1*x+b1; C2=k2*x+b2; C3=k3*x+b3; The k1, the k2, and the k3 are respectively a first slope, a second slope, and a third slope; the b1, the b2, and the b3 are respectively a first constant, a second constant, and a third constant; and the first slope > the second slope > the third slope. In the column direction away from the first side in the display region, an increase amplitude of the pixel capacitance of the blue pixels > an increase amplitude of the pixel capacitance of the green pixels > an increase amplitude of the pixel capacitance of the red pixels, so that a first pixel capacitance of the blue pixels in the i-th row > a second pixel capacitance of the green pixels in the i-th row > a third pixel capacitance of the red pixels in the i-th row.

2. The display panel of claim 1, wherein, The first slope is in a range of [0.16, 0.25], the second slope is in a range of [0.05, 0.15], the third slope is in a range of [0.01, 0.04], the first constant is in a range of [11.9, 12.1], the second constant is in a range of [12.2, 12.4], and the third constant is in a range of (12.4, 12.6].

3. The display panel of claim 2, wherein, The first structural variation trend, the second structural variation trend, and the third structural variation trend are specifically gradual increases in a facing area of a pixel electrode and a common electrode, and / or gradual decreases in a thickness of a dielectric layer between the pixel electrode and the common electrode.

4. The display panel of claim 2, wherein, Each pixel in the multiple pixels includes a light-emitting device and a pixel circuit, and the pixel circuit includes a driving transistor.

5. The display panel of claim 1, wherein, ​ The first structural change trend is that the width-length ratio of the driving transistor corresponding to the blue pixel gradually decreases, and the second structural change trend is that the width-length ratio of the driving transistor corresponding to the green pixel gradually increases, so that the first width-length ratio of the driving transistor corresponding to the blue pixel in the i-th row > the third width-length ratio of the driving transistor corresponding to the red pixel in the i-th row > the second width-length ratio of the driving transistor corresponding to the green pixel in the i-th row.

6. The display panel of claim 5, wherein, The distance between the i-th row of pixels in the plurality of pixels and the first side edge of the display area is denoted as a pixel distance x, and the corresponding relationship between the first width-length ratio WL1 of the driving transistor corresponding to the blue pixel and the second width-length ratio WL2 of the driving transistor corresponding to the green pixel in the i-th row of pixels and the pixel distance x is: WL1=k4*x+b4; WL2=k5*x+b5. The k4 and the k5 are respectively a fourth slope and a fifth slope; the b4 and the b5 are respectively a fourth constant and a fifth constant; the fourth slope <0, and the fifth slope >0.

7. The display panel of claim 6, wherein, The fourth slope is in the range of [-0.25, -0.05], the fifth slope is in the range of [0.05, 0.25], the fourth constant is in the range of [10, 35], and the fifth constant is in the range of [-40, -10].

8. The display panel of claim 5, wherein, The first structural change trend is that the channel length of the driving transistor corresponding to the blue pixel gradually increases, and the second structural change trend is that the channel length of the driving transistor corresponding to the green pixel gradually decreases.

9. The display panel of any of claims 1-8, wherein, In the column direction away from the first side in the display area, the first structural compensation current, the second structural compensation current, and the third structural compensation current each have an increasing trend.

10. A display device, characterized by comprising: The display panel includes any one of claims 1-9.

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