Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a plurality of first pixels arranged in an array, the plurality of first pixels at least comprise blue pixels, at least one of the plurality of first pixels comprises a plurality of light-emitting elements connected in series, and the plurality of light-emitting elements belonging to the same pixel are used for emitting light of the same color. The first pixels are of a series connection structure. And the channels of the driving transistors corresponding to the plurality of first pixels are n-shaped, the width range of the channels is [2.5, 3] microns, and the length range of the channels is (20, 36) microns, so that the width-to-length ratio is reduced, which is equivalent to the increase of a conducting channel or a gate electrode, the sensitivity difference caused by SS fluctuation is reduced, and the low-gray-scale visual effect is optimized. Or, the channels of the driving transistors corresponding to the plurality of first pixels are linear, the width range of the channels is [5, 11] micrometers, and the length range of the channels is [10, 15] micrometers, so that the width-length ratio is increased, the larger the width-length ratio is, the larger the charging current is, the better the threshold compensation is, the charging is quickened, and the low-gray-scale visual effect is optimized.

Description

Technical Field

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

[0002] The color uniformity of a display screen is an important indicator for determining the quality of the display screen. As display panels become more and more mature, the demand for display screens is also increasing. Currently, multiple light-emitting units can be connected in series to form a tandem structure. This structure includes two or more light-emitting layers, each of which is equivalent to a light-emitting unit. The overall light-emitting effect is the superposition of the light-emitting effects of multiple light-emitting units, so the brightness is higher than that of a single device (Single) structure. However, the color uniformity of the tandem structure is also worse than that of a single device, especially the uniformity is poor at low grayscale, so the low grayscale visual effect of the tandem structure needs to be improved. Summary of the Invention

[0003] In view of this, the purpose of the present application is to provide a display panel and a display device, which improve the adaptability of the polarizer and the protective adhesive by setting the edge shape of the polarizer.

[0004] An embodiment of the present application provides a display panel, comprising:

[0005] A plurality of first pixels arranged in an array, the plurality of first pixels including at least a blue pixel; at least one of the plurality of first pixels including a plurality of light-emitting elements connected in series, the plurality of light-emitting elements belonging to the same pixel being configured to emit light of the same color;

[0006] The channels of the driving transistors corresponding to the plurality of first pixels are in the shape of an X, with a channel width ranging from [2.5, 3] microns and a channel length ranging from (20, 36] microns; or, the channels of the driving transistors corresponding to the plurality of first pixels are in the shape of a straight line, with a channel width ranging from [5, 11] microns and a channel length ranging from [10, 15] microns.

[0007] An embodiment of the present application provides a display device, comprising the display panel described in the above embodiment.

[0008] An embodiment of the present application provides a display panel and a display device, wherein the display panel includes a plurality of first pixels arranged in an array, the plurality of first pixels include at least a blue pixel, and at least one of the plurality of first pixels includes a plurality of light-emitting elements connected in series. The plurality of light-emitting elements belonging to the same pixel are used to emit light of the same color, that is, the first pixel is a series structure.

[0009] The channels of the driving transistors corresponding to the multiple first pixels are in the shape of a cross, with a channel width ranging from [2.5, 3] microns and a channel length ranging from (20, 36] microns. Compared with the traditional aspect ratio of 3 / 19, the channel length is increased, and the channel width remains unchanged or decreases, so that the aspect ratio is reduced, which is equivalent to increasing the conductive channel or gate electrode. Therefore, the current change is small under the same voltage change, and the subthreshold slope (SS) is increased, thereby reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0010] Alternatively, the channels of the driving transistors corresponding to the multiple first pixels are linear, with a channel width range of [5,11] microns and a channel length range of [10,15] microns. Compared with the traditional aspect ratio of 3 / 19, the width is widened and the length is reduced, thereby increasing the aspect ratio. The larger the channel width, the less affected it is by process fluctuations. The larger the aspect ratio, the greater the charging current, the better the threshold compensation, and the faster the charging. Therefore, the subthreshold slope (SS) increases, reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 A schematic diagram showing how brightness changes with SS according to an embodiment of the present application is shown;

[0013] Figure 2 A structural diagram of a display panel provided in an embodiment of the present application;

[0014] Figure 3A A schematic diagram of a channel structure of a driving transistor provided in an embodiment of the present application;

[0015] Figure 3B A schematic diagram of a channel structure of another driving transistor provided in an embodiment of the present application;

[0016] Figure 4 A current-voltage correspondence diagram provided in an embodiment of the present application;

[0017] Figure 5 A schematic diagram showing how brightness changes with SS according to an embodiment of the present application;

[0018] Figure 6 A schematic diagram showing how chromaticity uniformity changes with SS provided in an embodiment of the present application;

[0019] Figure 7 A schematic diagram of a channel structure of another driving transistor provided in an embodiment of the present application;

[0020] Figure 8 Another current-voltage correspondence diagram provided in an embodiment of the present application;

[0021] Figure 9 Another schematic diagram of brightness changing with SS provided in an embodiment of the present application;

[0022] Figure 10 A schematic diagram showing how chromaticity uniformity changes with SS provided in an embodiment of the present application;

[0023] Figure 11 It is a structural schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] Secondly, this application is described in detail with reference to schematic diagrams. When describing the embodiments of this application, for ease of explanation, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of this application. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0027] As described in the background technology, multiple light-emitting units are connected in series to form a tandem structure. This structure includes two or more light-emitting layers, each of which is equivalent to a light-emitting unit. The overall light-emitting effect is the superposition of the light-emitting effects of multiple light-emitting units, so the brightness is higher than that of a single device (Single) structure.

[0028] However, the color uniformity of the series structure is also worse than that of a single device, especially the uniformity at low grayscale is poor, so the low grayscale visual effect of the series structure needs to be improved. Among them, the grayscale of the display panel refers to the brightness level from the darkest (black) to the brightest (white) in the image. The more grayscale there are, the richer the brightness details of the image and the more natural the transition. Low grayscale usually refers to the grayscale level in the lower part of the grayscale range, which is used to show image details in dark areas, such as shadows in night scenes, darker corners in the room, and other objects. In the grayscale representation of 0 to 255, 0 represents pure black, and low grayscale may involve lower numerical ranges such as 0 to 32 or 0 to 64.

[0029] This is because the series structure has high luminous efficiency, so the current is relatively small, and the sensitivity to threshold voltage (Vth) and SS (subthreshold slope) is poor, so the low grayscale visual effect is poor. Where SS refers to the gate-source voltage change required for the current to change by one order of magnitude (ΔVgs). Figure 1 The figure shows a schematic diagram of brightness changes with SS shifts, according to an embodiment of the present application. SS is plotted on the horizontal axis and brightness is plotted on the vertical axis. As can be seen from the figure, a tandem structure achieves higher brightness than a single device at the same SS. Therefore, a change in SS results in a greater brightness shift. Furthermore, the tandem structure requires a higher turn-on voltage and a slower turn-on time, further degrading visual quality.

[0030] Based on this, an embodiment of the present application provides a display panel and a display device, wherein the display panel includes a plurality of first pixels arranged in an array, the plurality of first pixels include at least a blue pixel, and at least one of the plurality of first pixels includes a plurality of light-emitting elements connected in series. The plurality of light-emitting elements belonging to the same pixel are used to emit light of the same color, that is, the first pixel is a series structure.

[0031] The channels of the driving transistors corresponding to the multiple first pixels are in the shape of a cross, with a channel width ranging from [2.5, 3] microns and a channel length ranging from (20, 36] microns. Compared with the traditional aspect ratio of 3 / 19, the channel length is increased, and the channel width remains unchanged or decreases, so that the aspect ratio is reduced, which is equivalent to increasing the conductive channel or gate electrode. Therefore, the current change is small under the same voltage change, and the subthreshold slope (SS) is increased, thereby reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0032] Alternatively, the channels of the driving transistors corresponding to the multiple first pixels are linear, with a channel width range of [5,11] microns and a channel length range of [10,15] microns. Compared with the traditional aspect ratio of 3 / 19, the width is widened and the length is reduced, thereby increasing the aspect ratio. The larger the channel width, the less affected it is by process fluctuations. The larger the aspect ratio, the greater the charging current, the better the threshold compensation, and the faster the charging. Therefore, the subthreshold slope (SS) increases, reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0033] 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.

[0034] refer to Figure 2 As shown, this is a structural diagram of a display panel provided in an embodiment of the present application. The display panel may include a plurality of pixels arranged in an array. The plurality of pixels may include a red pixel 120, a green pixel 130 and a blue pixel 110. The plurality of pixels are used to realize the display function of the display panel.

[0035] The display panel includes a display area AA for displaying images, which can be used to accommodate light-emitting elements to enable the display panel's image display function. The light-emitting elements can be organic light-emitting diodes (OLEDs) or liquid crystal display devices. The display panel may also include a non-display area surrounding the display area, which is used to accommodate circuit structures that drive the light-emitting elements in the display panel to display images.

[0036] When the display panel is an OLED display panel, the OLED display panel 110 includes: an array substrate and a pixel definition layer located on the array substrate. Within the pixel definition region of the pixel definition layer, an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and a cathode are sequentially arranged. When the display panel is a liquid crystal display panel, the liquid crystal display panel includes an array substrate and a color filter substrate arranged in a cell-to-cell configuration, and a liquid crystal layer located between the array substrate and the color filter substrate.

[0037] The multiple pixels may include multiple first pixels arranged in an array, the multiple first pixels include at least a blue pixel 110, at least one pixel among the multiple first pixels includes multiple light-emitting elements connected in series, and the multiple light-emitting elements belonging to the same pixel are used to emit light of the same color, that is, the first pixel is a series structure, and at this time, one first pixel may include multiple light-emitting elements connected in series.

[0038] The inventors have discovered that a tandem structure offers high luminous efficiency, resulting in a relatively lower current. However, this structure is less sensitive to threshold voltage (Vth) and subthreshold slope (SS), leading to poorer visual quality. The current is even lower at low grayscale levels, resulting in even worse visual quality at low grayscales. Furthermore, the tandem structure has a higher turn-on voltage and slower turn-on, further degrading visual quality. SS refers to the change in gate-source voltage (ΔVgs) required for a one-order-of-magnitude change in current.

[0039] Therefore, a positive shift in SS (or an increase in SS) increases the gate-source voltage change required for a one-order-of-magnitude current change. This reduces sensitivity differences caused by SS fluctuations, thereby optimizing visual effects, especially at low grayscales. Therefore, by adjusting the characteristics of the pixel's corresponding drive transistor, namely Vth and SS, sensitivity differences can be reduced, thereby optimizing low grayscale visual effects.

[0040] As a possible implementation, the channels of the driving transistors corresponding to the multiple first pixels are in the shape of an X, with a channel width range of [2.5, 3] microns and a channel length range of (20, 36] microns. Compared with the traditional aspect ratio of 3 / 19, the channel length is increased, and the channel width remains unchanged or decreases, so that the aspect ratio is reduced, which is equivalent to an increase in the conductive channel or gate electrode. Therefore, the current change is small under the same voltage change, and the subthreshold slope (SS) is increased, thereby reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0041] Specifically, the channel size (channel width and channel length) can be determined in combination with the physical layout space of the display panel. The larger the resolution of the display panel, the more pixels there are overall, the greater the loading, and theoretically the worse the charging. Therefore, a larger channel length can be set, which is equivalent to setting a larger conductive channel or gate resistance. Therefore, the smaller the current change under the same voltage change, that is, the more SS increases.

[0042] Specifically, if the display panel is a Full High Definition (FHD) type with a resolution of 1920×1080 pixels, the channel width range is [2.5, 3] microns, and the channel length range is (20, 30] microns; if the display panel is a Full High Definition Plus (FHD+) type with a resolution higher than 1920×1080 pixels, such as 2400×1080 pixels, etc., which maintains the basic characteristics of Full High Definition and improves the fineness of the picture by increasing the number of pixels, then the channel width range is [2.5, 3] microns, and the channel length range is [22, 33] microns; if the display panel is a Wide Quad High Definition type (WQUHD+), the channel width range is [2.5, 3] microns, and the channel length range is [22, 33] microns. The resolution of WQHD is 2560×1440 pixels, and the number of pixels in both horizontal and vertical directions is significantly increased compared to FHD, which can provide more delicate and clearer images. The channel width range is [2.5, 3] microns, and the channel length range is [25, 36] microns.

[0043] In the embodiment of the present application, the plurality of first pixels include blue pixels (B) 110 and do not include red pixels (R) 120 and green pixels (G) 130. The display panel further includes red pixels 120 and green pixels 130. At least one of the red pixels 120 includes multiple red light-emitting elements connected in series, and at least one of the green pixels 130 includes multiple green light-emitting elements connected in series. The channel lengths of the red pixels 120 and the green pixels 130 are shorter than the channel length of the blue pixel 110. The channels of the red pixels 120 and the green pixels 130 can be in the shape of a triangle or a straight line.

[0044] In other words, the aforementioned channel size is used to limit the size of blue pixels 110, but not red pixels 120 and green pixels 130. Red pixels 120 and green pixels 130 can have a smaller channel length than blue pixels 110 within the aforementioned channel size range, or they can have a smaller channel length outside the aforementioned channel size range, thereby achieving differentiated settings for blue pixels 110. This is because blue pixels 110 typically light up the slowest, so differentiated settings for blue pixels 110 can significantly increase the SS of blue pixels 110, further optimizing low-grayscale visual effects.

[0045] refer to Figure 3A , which is a schematic diagram of a channel structure of a driving transistor provided by an embodiment of the present application. The channel structure is the area where the semiconductor layer 11 and the gate 12 are aligned. The red pixel 120 and the green pixel 130 can adopt this arrangement. Figure 3B, which is a schematic diagram of a channel structure of another driving transistor provided in an embodiment of the present application. The channel structure is the area where the semiconductor layer 11 and the gate 12 are aligned, as indicated by the dotted line. The blue pixel 110 can adopt this arrangement.

[0046] In a specific implementation, the number of bends in the channels of the red pixel 120 and the green pixel 130 is smaller than the number of bends in the channel of the blue pixel 110, or the length of the bends in the channels of the red pixel 120 and the green pixel 130 is smaller than the length of the bends in the channel of the blue pixel 110. Figure 3A and Figure 3B As shown, the channel structures of the red pixel 120 and the green pixel 130 are as shown in FIG. Figure 3A As shown, the channel structure of the blue pixel 110 is as follows Figure 3B As shown, the bent parts of the channel structure of the red pixel 120 and the green pixel 130 are the lower left, upper left, upper right and lower right four, and the bent parts of the channel structure of the blue pixel 110 are the lower left, upper left, upper right and lower right four. The length of the bent part of the blue pixel 110 is greater than the length of the bent parts of the red pixel 120 and the green pixel 130, so that the channel length of the blue pixel 110 is greater than the channel length of the red pixel 120 and the green pixel 130.

[0047] For example, the channel widths of the red pixel 120, the green pixel 130, and the blue pixel 110 are all 3 micrometers, the channel lengths of the red pixel 120 and the green pixel 130 are all 19 micrometers, and the channel length of the blue pixel 110 is 30 micrometers. Figure 3A As shown, in the red pixel 120 and the green pixel 130, the length (Length) of the channel structure is 2.5 microns, and the width (Width) of the marked position shown by the black triangle is 19.54 microns; Figure 3B As shown, in the blue pixel 110 , the length (Length) of the channel structure is 2.5 microns, and the width (Width) at the marked position indicated by the black triangle is 29.39 microns.

[0048] refer to Figure 4 As shown, a current-voltage correspondence diagram provided in an embodiment of the present application is shown, where the horizontal axis is the gate voltage Vg and the vertical axis is the drain current Id. It can be seen from the figure that when the blue pixel 110 has a channel width-to-length ratio of 3 / 19 and 3 / 30, the drain current changes from 1E-10 to 1E-9. The 3 / 30 structure corresponds to a larger gate voltage Vg difference, and therefore has a larger SS.

[0049] refer to Figure 5As shown, a schematic diagram of brightness variation with SS provided in an embodiment of the present application is provided. As can be seen from the figure, the channel width-to-length ratio of 3 / 30 of the blue pixel 110 at low grayscale has a higher SS. Therefore, compared with the channel size of 3 / 19 of the blue pixel 110, the brightness change is less sensitive to SS, thereby improving the low grayscale visual effect.

[0050] refer to Figure 6 As shown, a schematic diagram of the change of chromaticity uniformity with SS provided in an embodiment of the present application is shown, where the horizontal axis is SS and the vertical axis is chromaticity uniformity (CU). It can be seen from the figure that when the blue pixel 110 is differentially set to a channel size of 3 / 30, the change of chromaticity uniformity with SS is small, thereby improving the low grayscale visual effect.

[0051] As another possible implementation, the channels of the driving transistors corresponding to the multiple first pixels are linear, with a channel width range of [5,11] microns and a channel length range of [10,15] microns. Compared with the traditional aspect ratio of 3 / 19, the channel width is widened, and the channel length is reduced by straightening the channel, thereby increasing the aspect ratio. The larger the channel width, the less affected it is by process fluctuations. The larger the aspect ratio, the greater the charging current, the better the threshold compensation, and the faster the charging. Therefore, the subthreshold slope (SS) is increased, the sensitivity difference caused by SS fluctuations is reduced, and the low grayscale visual effect is optimized.

[0052] Specifically, the channel size (channel width and channel length) can be determined in combination with the physical layout space of the display panel. The larger the resolution of the display panel, the more pixels there are overall, the greater the loading, and theoretically the worse the charging. Therefore, a larger channel width can be set, which is less affected by process fluctuations, and the larger the aspect ratio, the larger the charging current, the better the threshold compensation, and the faster the charging, that is, the more SS increases.

[0053] Specifically, if the display panel is a full HD type with a resolution of 1920×1080 pixels, the channel width range is [5, 7] microns, and the channel length range is [10, 15] microns; if the display panel is a full HD enhanced type with a resolution higher than 1920×1080 pixels, for example, it can be 2400×1080 pixels, etc., which improves the fineness of the picture by increasing the number of pixels while maintaining the basic characteristics of full HD, then the channel width range is [7, 9] microns, and the channel length range is [10, 15] microns; if the display panel is a widescreen ultra-HD type with a resolution of, for example, 2560×1440 pixels, the number of pixels in the horizontal and vertical directions are significantly increased compared to the FHD type, and can provide a finer and clearer image, then the channel width range is [9, 11] microns, and the channel length range is [10, 15] microns.

[0054] In the embodiment of the present application, the plurality of first pixels include blue pixels 110 and do not include red pixels 120 and green pixels 130. The display panel further includes red pixels 120 and green pixels 130. At least one of the red pixels 120 includes multiple red light-emitting elements connected in series, and at least one of the green pixels 130 includes multiple green light-emitting elements connected in series. The channel widths of the red pixels 120 and the green pixels 130 are smaller than the channel width of the blue pixel 110. The channels of the red pixels 120 and the green pixels 130 can be in the shape of a triangle or a straight line.

[0055] In other words, the aforementioned channel size is used to limit the size of blue pixels 110, but not red pixels 120 and green pixels 130. Red pixels 120 and green pixels 130 can have a smaller channel width than blue pixels 110 within the aforementioned channel size range, or they can have a smaller channel width outside the aforementioned channel size range, thereby achieving differentiated settings for blue pixels 110. This is because blue pixels 110 typically light up the slowest, so differentiated settings for blue pixels 110 can significantly increase the SS of blue pixels 110, further optimizing low-grayscale visual effects.

[0056] refer to Figure 7 As shown in FIG. 1 , another channel structure diagram of a driving transistor provided in an embodiment of the present application is provided. The blue pixel 110 can adopt this configuration. The red pixel 120 and the green pixel 130 can be configured as shown in FIG. Figure 3A shown.

[0057] For example, the channel widths of the red pixel 120 and the green pixel 130 are both 3 microns, the channel width of the blue pixel 110 is 7 microns, the channel lengths of the red pixel 120 and the green pixel 130 are both 19 microns, and the channel length of the blue pixel 110 is 13 microns. Figure 7 As shown, the length (Length) of the channel structure of the blue pixel 110 is 13 microns, and the width (Width) of the marked position indicated by the black triangle is 7 microns. Figure 3A As shown, in the red pixel 120 and the green pixel 130 , the length (Length) of the channel structure is 2.5 microns, and the width (Width) at the marked position indicated by the black triangle is 19.54 microns.

[0058] refer to Figure 8As shown, this is another current-voltage correspondence diagram provided in an embodiment of the present application, where the horizontal axis is the gate voltage Vg and the vertical axis is the drain current Id. It can be seen from the figure that when the blue pixel 110 has a channel width-to-length ratio of 3 / 19 and 7 / 13, the drain current changes from 1E-10 to 1E-9. The 7 / 13 structure corresponds to a larger gate voltage Vg difference, and therefore has a larger SS.

[0059] refer to Figure 9 As shown, another schematic diagram of brightness changing with SS provided in an embodiment of the present application. It can be seen from the figure that the channel width-to-length ratio of 7 / 13 of the blue pixel 110 at low grayscale has a higher SS. Therefore, compared with the channel size of 3 / 19 of the blue pixel 110, the brightness change is less sensitive to SS, thereby improving the low grayscale visual effect.

[0060] refer to Figure 10 As shown, another schematic diagram of the variation of chromaticity uniformity with SS provided in an embodiment of the present application is shown, where the horizontal axis is SS and the vertical axis is chromaticity uniformity. It can be seen from the figure that when the blue pixel 110 is differentially set to a channel size of 7 / 13, the variation of chromaticity uniformity with SS is small, thereby improving the low grayscale visual effect.

[0061] An embodiment of the present application provides a display panel, including a plurality of first pixels arranged in an array, the plurality of first pixels including at least a blue pixel, at least one of the plurality of first pixels including a plurality of light-emitting elements connected in series, and the plurality of light-emitting elements belonging to the same pixel are used to emit light of the same color, that is, the first pixel is a series structure.

[0062] The channels of the driving transistors corresponding to the multiple first pixels are in the shape of a cross, with a channel width ranging from [2.5, 3] microns and a channel length ranging from (20, 36] microns. Compared with the traditional aspect ratio of 3 / 19, the channel length is increased, and the channel width remains unchanged or decreases, so that the aspect ratio is reduced, which is equivalent to increasing the conductive channel or gate electrode. Therefore, the current change is small under the same voltage change, and the subthreshold slope (SS) is increased, thereby reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0063] Alternatively, the channels of the driving transistors corresponding to the multiple first pixels are linear, with a channel width range of [5,11] microns and a channel length range of [10,15] microns. Compared with the traditional aspect ratio of 3 / 19, the width is widened and the length is reduced, thereby increasing the aspect ratio. The larger the channel width, the less affected it is by process fluctuations. The larger the aspect ratio, the greater the charging current, the better the threshold compensation, and the faster the charging. Therefore, the subthreshold slope (SS) increases, reducing the sensitivity difference caused by SS fluctuations and optimizing low grayscale visual effects.

[0064] An embodiment of the present application also provides a display device, including the display panel described in the above embodiment.

[0065] refer to Figure 11 , is a schematic diagram of the planar structure of a display device provided in an embodiment of the present application. As can be seen from the figure, the display device 1000 includes a display panel 100, and the display panel 100 is the display panel 100 described in any of the above embodiments. The display device 1000 provided in the embodiment of the present application can be a display device with a display function such as a mobile phone, a computer, a television, a car display device, etc., and the embodiment of the present application does not make specific limitations. The display device 1000 provided in the embodiment of the present application has the beneficial effects of the display panel 100 provided in the embodiment of the present application. For details, please refer to the specific description of the display panel in the above embodiment, and the embodiment of the present application will not be repeated here.

[0066] The above is only a preferred embodiment of the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of protection of the technical solution of the present application.

Claims

1. A display panel, characterized in that: include: A plurality of first pixels arranged in an array, the plurality of first pixels including at least a blue pixel; at least one of the plurality of first pixels including a plurality of light-emitting elements connected in series, the plurality of light-emitting elements belonging to the same pixel being configured to emit light of the same color; The channels of the driving transistors corresponding to the plurality of first pixels are in the shape of an X, with a channel width ranging from [2.5, 3] microns and a channel length ranging from (20, 36] microns; or, the channels of the driving transistors corresponding to the plurality of first pixels are in the shape of a straight line, with a channel width ranging from [5, 11] microns and a channel length ranging from [10, 15] microns.

2. The display panel according to claim 1, wherein: The channels of the driving transistors corresponding to the plurality of first pixels are in the shape of an X; If the display panel is a full high-definition type, the channel width range is [2.5, 3] microns, and the channel length range is (20, 30] microns; if the display panel is a full high-definition enhanced type, the channel width range is [2.5, 3] microns, and the channel length range is [22, 33] microns; if the display panel is a widescreen ultra-high-definition type, the channel width range is [2.5, 3] microns, and the channel length range is [25, 36] microns.

3. The display panel according to claim 2, wherein: The multiple first pixels include blue pixels but do not include red pixels and green pixels. The display panel also includes red pixels and green pixels. At least one of the red pixels includes multiple red light-emitting elements connected in series, and at least one of the green pixels includes multiple green light-emitting elements connected in series. The channel lengths of the red pixels and the green pixels are smaller than the channel length of the blue pixel.

4. The display panel according to claim 3, wherein: The number of bends in the channels of the red pixel and the green pixel is smaller than the number of bends in the channel of the blue pixel, or the lengths of the bends in the channels of the red pixel and the green pixel are smaller than the length of the bends in the channel of the blue pixel.

5. The display panel according to claim 3, wherein: The channel widths of the red pixel, the green pixel, and the blue pixel are all 3 micrometers, the channel lengths of the red pixel and the green pixel are all 19 micrometers, and the channel length of the blue pixel is 30 micrometers.

6. The display panel according to claim 1, wherein: The channels of the driving transistors corresponding to the plurality of first pixels are linear; If the display panel is a full HD type, the channel width range is [5, 7] microns and the channel length range is [10, 15] microns; if the display panel is a full HD enhanced type, the channel width range is [7, 9] microns and the channel length range is [10, 15] microns; if the display panel is a widescreen ultra HD type, the channel width range is [9, 11] microns and the channel length range is [10, 15] microns.

7. The display panel according to claim 6, wherein: The multiple first pixels include blue pixels but do not include red pixels and green pixels. The display panel also includes red pixels and green pixels. At least one of the red pixels includes multiple red light-emitting elements connected in series, and at least one of the green pixels includes multiple green light-emitting elements connected in series. The channel widths of the red pixels and the green pixels are smaller than the channel width of the blue pixel.

8. The display panel according to claim 7, wherein: The channels of the red pixel and the green pixel are in a zigzag shape or a straight line shape.

9. The display panel according to claim 8, wherein: The channel widths of the red pixel and the green pixel are both 3 micrometers, the channel width of the blue pixel is 7 micrometers, the channel lengths of the red pixel and the green pixel are both 19 micrometers, and the channel length of the blue pixel is 13 micrometers.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

Images