Display panel and display device
By designing a green, blue, and red sub-pixel structure with overlapping rows and columns in the OLED display panel, simultaneous rendering of the sharp sub-pixel rendering algorithm was achieved, improving image clarity and display effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-27
AI Technical Summary
Existing OLED display panels cannot be rendered using a clear subpixel rendering algorithm in the column direction, resulting in insufficient image clarity.
Design a display panel in which a pixel unit includes multiple sub-pixels arranged along the row and column directions. Green, blue, and red sub-pixels overlap in both the row and column directions. The panel is rendered simultaneously using a sharp sub-pixel rendering algorithm to precisely adjust the brightness of each sub-pixel.
It improves image clarity, makes image edges smoother, and enhances display quality.
Smart Images
Figure CN121751931A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of display, and particularly relates to a display panel and a display device. BACKGROUND
[0002] An OLED (Organic Light-Emitting Diode) display panel does not need a backlight source, has advantages of being bendable, thin in thickness, high in brightness, low in power consumption, fast in response, wide in color gamut, etc., and is widely used in mobile phones, notebooks and other devices.
[0003] The OLED display panel comprises a plurality of pixel units arranged in a row direction and a column direction, each pixel unit comprising a red sub-pixel (R), a green sub-pixel (G) and a blue sub-pixel (B) to realize color display. A clear type sub-pixel rendering algorithm can improve the display precision of the pixel unit level to the sub-pixel level, that is, by accurately adjusting the brightness of each sub-pixel, the image edge is smoother, so as to improve the image clarity.
[0004] In the existing OLED display panel, the red sub-pixel, the green sub-pixel and the blue sub-pixel are arranged in the row direction. In the row direction, the clear type sub-pixel rendering algorithm can be rendered to improve the image clarity, but in the column direction, there is no three-color sub-pixel arranged in the column direction in the pixel unit, and the clear type sub-pixel rendering algorithm cannot be rendered. SUMMARY
[0005] The present application aims to provide a display panel and a display device, so that the row direction and the column direction can be simultaneously rendered by the clear type sub-pixel rendering algorithm, and the image clarity is improved.
[0006] In order to achieve the above-mentioned purpose, the present application provides a display panel comprising a plurality of pixel units arranged in a row direction and a column direction, the pixel unit comprising a plurality of sub-pixels, the plurality of sub-pixels being distributed in a rectangular frame, the edge of the sub-pixel far from the center of the rectangular frame being coincident with the rectangular frame, the plurality of sub-pixels comprising one green sub-pixel, at least two blue sub-pixels and at least two red sub-pixels, the green sub-pixel, the blue sub-pixel and the red sub-pixel having overlapping projections in the row direction, and the green sub-pixel, the blue sub-pixel and the red sub-pixel having overlapping projections in the column direction.
[0007] Optionally, in each pixel unit: the area ratio of all the red sub-pixels, the green sub-pixel and all the blue sub-pixels is 5±0.5:4±0.5:7±0.5.
[0008] Optionally, when the seven sub-pixels are spliced into a square pattern with the edges of the rectangular frame coinciding, the adjacent edges of the seven sub-pixels are seamlessly spliced, form a gap, or partially overlap.
[0009] Optionally, the adjacent edges of the seven sub-pixels are seamlessly spliced, the seven sub-pixels are a first sub-pixel, a second sub-pixel, a third sub-pixel, a fourth sub-pixel, a fifth sub-pixel, a sixth sub-pixel, and a seventh sub-pixel, the first sub-pixel is in the shape of a rhombus, the area of the first sub-pixel is 1 / 8 of the square pattern, the second sub-pixel is in the shape of a square, the area of the second sub-pixel is 1 / 8 of the square pattern, the third sub-pixel is in the shape of an isosceles right triangle, the area of the third sub-pixel is 1 / 16 of the square pattern, the fourth sub-pixel is in the shape of an isosceles right triangle, the area of the fourth sub-pixel is 1 / 4 of the square pattern, the fifth sub-pixel is in the shape of an isosceles right triangle, the area of the fifth sub-pixel is 1 / 4 of the square pattern, the sixth sub-pixel is in the shape of an isosceles right triangle, the area of the sixth sub-pixel is 1 / 16 of the square pattern, and the seventh sub-pixel is in the shape of an isosceles right triangle, the area of the seventh sub-pixel is 1 / 8 of the square pattern.
[0010] Optionally, the rectangular frame is divided into an upper region, a lower region, a left region, and a right region by a diagonal line of the rectangular frame, the fourth sub-pixel is the green sub-pixel, and the fourth sub-pixel is located in the upper region, and the fifth sub-pixel is the blue sub-pixel, and the fifth sub-pixel is located in the left region.
[0011] Optionally, the first sub-pixel, the second sub-pixel, and the third sub-pixel are the red sub-pixels, the sixth sub-pixel and the seventh sub-pixel are the blue sub-pixels, the first sub-pixel and the sixth sub-pixel are located in the lower region, the second sub-pixel and the third sub-pixel are located in the right region, the seventh sub-pixel is arranged at the lower right corner of the rectangular frame and spans the lower region and the right region, and the first sub-pixel, the sixth sub-pixel, the second sub-pixel, and the third sub-pixel are arranged in sequence along a diagonal line of the rectangular frame.
[0012] Optionally, distances between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel and the seventh sub-pixel are e, distances between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are e, distances between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel and the fifth sub-pixel are e, and distances between the first sub-pixel, the sixth sub-pixel, the second sub-pixel and the third sub-pixel are f, e > f.
[0013] Optionally, the display panel comprises a substrate and a driving circuit layer, the driving circuit layer is arranged on one side of the substrate, the sub-pixels are arranged on a side of the driving circuit layer away from the substrate, the driving circuit layer comprises a plurality of pixel driving circuits for driving the sub-pixels to emit light, the sub-pixels of the same color in each pixel unit are connected with the same pixel driving circuit, and the pixel driving circuit can control the combination of any one or more of the sub-pixels of the same color in the pixel unit to emit light.
[0014] Optionally, the pixel unit comprises three red sub-pixels and three blue sub-pixels, the pixel driving circuit for controlling the red sub-pixel or the blue sub-pixel comprises a light-emitting control module, a reset module, a data writing module, a compensation module, a switching module, a storage capacitor and a second transistor, the data writing module is connected with a second end of the second transistor through a third node, is configured to write the voltage of a data line to the third node in response to a second scan line signal, the light-emitting control module is connected with the third node, a second light-emitting control line and a fourth node, three transistors of the switching module are each connected with a second power supply through one of the sub-pixels, the reset module is connected with the fourth node, is configured to write the voltage of a reset signal line to the fourth node in response to a first scan line signal, the storage capacitor is connected with the fourth node and a first node, a control end of the second transistor is connected with the first node, and the compensation module is connected with the first node, a first end of the second transistor and a first power supply, is configured to write the threshold voltage of the second transistor to the first node in response to the first scan line and a first light-emitting control line signal.
[0015] The application further provides a display device comprising: the display panel; a mainboard connected with the display panel.
[0016] The display panel and the display device disclosed by the application have the following beneficial effects: In the present application, the display panel comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, the plurality of sub-pixels are distributed in a rectangular frame, the plurality of sub-pixels comprise one green sub-pixel, at least two blue sub-pixels and at least two red sub-pixels, the green sub-pixel, the blue sub-pixel and the red sub-pixel exist in overlap in the row direction and the column direction, that is, each pixel unit exists the red sub-pixel, the green sub-pixel and the blue sub-pixel arranged in the row direction, and exists the red sub-pixel, the green sub-pixel and the blue sub-pixel arranged in the column direction. In the row direction and the column direction, the clear sub-pixel rendering algorithm can be rendered at the same time to accurately adjust the brightness of each sub-pixel, make the image edge smoother, and thus improve the image clarity.
[0017] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.
[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings herein are incorporated into the specification and form a part of the specification, show embodiments consistent with the present application, and together with the specification serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0020] Figure 1 is a structural schematic diagram of a pixel unit in the embodiment one of the present application.
[0021] Figure 2 is a structural schematic diagram of a display panel in the embodiment one of the present application.
[0022] Figure 3 is a sub-pixel splicing schematic diagram of each pixel unit in the embodiment one of the present application.
[0023] Figure 4 is a structural schematic diagram of a pixel driving circuit in the embodiment one of the present application.
[0024] Figure 5 is a timing schematic diagram of a pixel driving circuit in the embodiment one of the present application.
[0025] Figure 6 is a schematic diagram of a pixel driving circuit in the reset stage in the embodiment one of the present application.
[0026] Figure 7 is a schematic diagram of a pixel driving circuit in the compensation stage in the embodiment one of the present application.
[0027] Figure 8 is a schematic diagram of a pixel driving circuit in a light emitting stage in Embodiment One of the present application.
[0028] Figure 9 is a schematic diagram of a structure of a display device in the present application.
[0029] Legend of reference signs: 10, display panel; 20, main board; 100, pixel unit; 111, first sub-pixel; 112, second sub-pixel; 113, third sub-pixel; 114, fourth sub-pixel; 115, fifth sub-pixel; 116, sixth sub-pixel; 117, seventh sub-pixel; 120, rectangular frame; 200, pixel driving circuit; 201, data writing module; 202, compensation module; 203, reset module; 204, light emitting control module; 205, switch module; 211, first transistor; 212, second transistor; 213, third transistor; 214, fourth transistor; 215, fifth transistor; 216, sixth transistor; 217, seventh transistor; 218, eighth transistor; 219, ninth transistor; 220, storage capacitor. DETAILED DESCRIPTION
[0030] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.
[0031] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the
[0032] The application will be further described with reference to the drawings and specific examples. It is to be understood that the specific examples are intended to be illustrative only and the application is not to be limited thereto.
[0033] Embodiment One Reference is made to Figures 1 to 3As shown, the display panel 10 in the embodiment includes a plurality of pixel units 100 arranged in a row direction and a column direction. The pixel unit 100 includes a plurality of sub-pixels, the plurality of sub-pixels are distributed in a rectangular frame 120, and the edges of the sub-pixels away from the center of the rectangular frame 120 coincide with the rectangular frame 120. The plurality of sub-pixels include one green sub-pixel, at least two blue sub-pixels, and at least two red sub-pixels, the green sub-pixel, the blue sub-pixel, and the red sub-pixel have overlapping projections in the row direction, and the green sub-pixel, the blue sub-pixel, and the red sub-pixel have overlapping projections in the column direction. That is, each pixel unit 100 has red sub-pixels, green sub-pixels, and blue sub-pixels arranged in the row direction, and has red sub-pixels, green sub-pixels, and blue sub-pixels arranged in the column direction.
[0034] In some embodiments, the pixel unit 100 includes one green sub-pixel, one blue sub-pixel, and one red sub-pixel, and the red sub-pixel, the green sub-pixel, and the blue sub-pixel are arranged in the row direction. In the row direction, the clear sub-pixel rendering algorithm can be used for rendering to improve image clarity, but in the column direction, there is no three-color sub-pixel arranged in the column direction in the pixel unit 100, and the clear sub-pixel rendering algorithm cannot be used for rendering.
[0035] In the embodiment, the display panel 10 includes a plurality of pixel units 100, each pixel unit 100 includes a plurality of sub-pixels, the plurality of sub-pixels are distributed in a rectangular frame 120, and the plurality of sub-pixels include one green sub-pixel, at least two blue sub-pixels, and at least two red sub-pixels. The green sub-pixel, the blue sub-pixel, and the red sub-pixel have overlapping projections in the row direction and the column direction, that is, each pixel unit 100 has red sub-pixels, green sub-pixels, and blue sub-pixels arranged in the row direction, and has red sub-pixels, green sub-pixels, and blue sub-pixels arranged in the column direction. In the row direction and the column direction, the clear sub-pixel rendering algorithm can be used for rendering at the same time to accurately adjust the brightness of each sub-pixel, make the image edge smoother, and thus improve the image clarity.
[0036] In some embodiments, in each pixel unit 100: the area ratio of all red sub-pixels, green sub-pixels, and all blue sub-pixels is 5±0.5:4±0.5:7±0.5. The display panel 10 includes a substrate, and the pixel unit 100 is arranged on one side of the substrate. The area of the red sub-pixel, the green sub-pixel, and the blue sub-pixel is the area of the projection of the red sub-pixel, the green sub-pixel, and the blue sub-pixel on the substrate.
[0037] The area ratio of all red sub-pixels, green sub-pixels and all blue sub-pixels is 5±0.5:4±0.5:7±0.5, and the area of the blue sub-pixels is the largest. Since the brightness and service life of the organic light-emitting material for making the blue sub-pixels are relatively low compared with other color sub-pixels, increasing the area of the blue sub-pixels can improve the brightness and service life of the blue sub-pixels.
[0038] In some embodiments, the pixel unit 100 includes seven sub-pixels, and when the edges of the seven sub-pixels coincide with the rectangular frame are spliced into a square pattern, the adjacent edges of the seven sub-pixels are seamlessly spliced, form a gap or partially overlap. When the edges of the seven sub-pixels coincide with the rectangular frame are spliced into a square pattern, the adjacent edges of the seven sub-pixels are seamlessly spliced, that is, when the adjacent edges of the seven sub-pixels are spliced, the seven sub-pixels can be spliced into a square pattern.
[0039] The pixel unit 100 includes seven sub-pixels, each of which can be independently turned on or off, and the number of sub-pixels turned on in the seven sub-pixels can be arbitrarily combined, which can not only improve the rendering effect of the clear sub-pixel rendering algorithm, but also enable different sub-pixels to work in time division, thereby improving the service life of the display panel 10. The seven sub-pixels can be spliced into a square pattern, and the seven sub-pixels are dispersed and form a certain gap between each other, and the area occupied is a rectangular frame 120. The spacing between the pixel units 100 can be reduced, thereby improving the pixel density of the display panel 10.
[0040] In some embodiments, the adjacent edges of the seven sub-pixels are seamlessly spliced, and in each pixel unit 100: the area ratio of all red sub-pixels, green sub-pixels and all blue sub-pixels is 5:4:7. The seven sub-pixels are respectively a first sub-pixel 111, a second sub-pixel 112, a third sub-pixel 113, a fourth sub-pixel 114, a fifth sub-pixel 115, a sixth sub-pixel 116 and a seventh sub-pixel 117. The shape of the first sub-pixel 111 is a rhombus, and the area of the first sub-pixel 111 is 1 / 8 of the square pattern; the shape of the second sub-pixel 112 is a square, and the area of the second sub-pixel 112 is 1 / 8 of the square pattern; the shape of the third sub-pixel 113 is an isosceles right triangle, and the area of the third sub-pixel 113 is 1 / 16 of the square pattern; the shape of the fourth sub-pixel 114 is an isosceles right triangle, and the area of the fourth sub-pixel 114 is 1 / 4 of the square pattern; the shape of the fifth sub-pixel 115 is an isosceles right triangle, and the area of the fifth sub-pixel 115 is 1 / 4 of the square pattern; the shape of the sixth sub-pixel 116 is an isosceles right triangle, and the area of the sixth sub-pixel 116 is 1 / 16 of the square pattern; and the shape of the seventh sub-pixel 117 is an isosceles right triangle, and the area of the seventh sub-pixel 117 is 1 / 8 of the square pattern.
[0041] The shapes of the seven sub-pixels are designed as a jigsaw puzzle. When the area ratios of all red sub-pixels, green sub-pixels and all blue sub-pixels are 5±0.5:4±0.5:7±0.5, and there are red sub-pixels, green sub-pixels and blue sub-pixels in the row direction and the column direction, the sub-pixels of the same color can be dispersed to improve the display effect of the display panel 10.
[0042] In some embodiments, the rectangular frame 120 is divided into an upper side region, a lower side region, a left side region and a right side region by a diagonal line of the rectangular frame 120. The fourth sub-pixel 114 is a green sub-pixel G, and the fourth sub-pixel 114 is located in the upper side region. The fifth sub-pixel 115 is a blue sub-pixel B(a), and the fifth sub-pixel 115 is located in the left side region.
[0043] The green sub-pixel G is located in the upper side region, which can ensure that there are green sub-pixels G in the row direction and the column direction. The area of all blue sub-pixels accounts for 7 / 16. The fifth sub-pixel 115 in the left side region is a blue sub-pixel B(a), which facilitates the dispersion of sub-pixels of the same color.
[0044] In some embodiments, the first sub-pixel 111, the second sub-pixel 112 and the third sub-pixel 113 are all red sub-pixels. The first sub-pixel 111 is a red sub-pixel R(a), the second sub-pixel 112 is a red sub-pixel R(b), and the third sub-pixel 113 is a red sub-pixel R(c). The sixth sub-pixel 116 and the seventh sub-pixel 117 are blue sub-pixels. The sixth sub-pixel 116 is a blue sub-pixel B(b), and the seventh sub-pixel 117 is a blue sub-pixel B(c).
[0045] The first sub-pixel 111 and the sixth sub-pixel 116 are located in the lower side region, the second sub-pixel 112 and the third sub-pixel 113 are located in the right side region, and the seventh sub-pixel 117 is arranged at the lower right corner of the rectangular frame 120 and spans the lower side region and the right side region. The first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112 and the third sub-pixel 113 are arranged in sequence along a diagonal line of the rectangular frame 120.
[0046] The red sub-pixel R(a), the blue sub-pixel B(b), the red sub-pixel R(b) and the red sub-pixel R(c) are arranged in sequence along a diagonal line of the rectangular frame 120, which ensures that there are red sub-pixels, green sub-pixels and blue sub-pixels in the row direction and the column direction, and the sub-pixels of the same color can be dispersed.
[0047] In some embodiments, the distance between the first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112, and the third sub-pixel 113 and the seventh sub-pixel 117 is e, the distance between the first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112, and the third sub-pixel 113 and the fourth sub-pixel 114 is e, the distance between the first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112, and the third sub-pixel 113 and the fifth sub-pixel 115 is e, the distance between the first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112, and the third sub-pixel 113 is f, the distance between the fourth sub-pixel 114 and the fifth sub-pixel 115 is f, and e > f.
[0048] When the display panel 10 is manufactured, the distance between the first sub-pixel 111, the sixth sub-pixel 116, the second sub-pixel 112, and the third sub-pixel 113 is ensured to be large enough, and the distance between any adjacent sub-pixels is ensured to be large enough.
[0049] In some embodiments, the display panel 10 includes a substrate and a driving circuit layer, the driving circuit layer is arranged on one side of the substrate, and the sub-pixels are arranged on the side of the driving circuit layer away from the substrate. The driving circuit layer includes a plurality of pixel driving circuits 200 for driving the sub-pixels to emit light. The same color sub-pixels in each pixel unit 100 are connected to the same pixel driving circuit 200, and the pixel driving circuit 200 can control the combination of any one or more of the same color sub-pixels in the pixel unit 100 to emit light.
[0050] The pixel driving circuit 200 can control the combination of any one or more of the same color sub-pixels in the pixel unit 100 to emit light, so that different sub-pixels can work in time-sharing mode, thereby improving the service life of the display panel 10. In addition, the pixel driving circuit 200 can control the combination of any one or more of the same color sub-pixels in the pixel unit 100 to emit light, so that users can adjust the color according to their personal preference for warm or cool color, thereby providing different visual experiences. When the service life of the red sub-pixel or the blue sub-pixel decays, the proportion of the red sub-pixel or the blue sub-pixel emitting light can be correspondingly increased to correct the display color deviation.
[0051] In some embodiments, the pixel unit 100 includes three red sub-pixels and three blue sub-pixels, and the pixel driving circuit 200 for controlling the red sub-pixel or the blue sub-pixel includes a light emission control module 204, a reset module 203, a data writing module 201, a compensation module 202, a switch module 205, a storage capacitor 220, and a second transistor 212, and the second transistor 212 is a driving transistor.
[0052] The data writing module 201 is connected with the second end of the second transistor 201 through the third node N3, and is configured to write the voltage of the data line Data into the third node N3 in response to the second scan line S2 signal. The light emitting control module 204 is connected with the third node N3, the second light emitting control line E2 and the fourth node N4, and the three transistors of the switch module 205 are each connected with the second power supply through a sub-pixel.
[0053] The reset module 203 is connected with the fourth node N4, and is configured to write the voltage of the reset signal line Int into the fourth node N4 in response to the first scan line S1 signal. The storage capacitor 220 is connected with the fourth node N4 and the first node N1, and the control end of the second transistor 212 is connected with the first node N1. The compensation module 202 is connected with the first node N1, the first end of the second transistor 212 and the first power supply, and is configured to write the threshold voltage of the second transistor 212 into the first node N1 in response to the first scan line S1 and the first light emitting control line E1 signal.
[0054] The data writing module 201 includes the first transistor 211, the compensation module 202 includes the third transistor 213 and the fifth transistor 215, the reset module 203 includes the fourth transistor 214, the light emitting control module 204 includes the sixth transistor 216, and the switch module 205 includes the seventh transistor 217, the eighth transistor 218 and the ninth transistor 219. The first transistor 211, the second transistor 212, the third transistor 213, the fourth transistor 214, the fifth transistor 215, the sixth transistor 216, the seventh transistor 217, the eighth transistor 218 and the ninth transistor 219 can each be an N-type field effect transistor or a P-type field effect transistor.
[0055] The first end of the fifth transistor 215 is connected with the first power supply, and the second end of the fifth transistor 215, the second node N2, the first end of the second transistor 212, the second end of the second transistor 212, the third node N3, the first end of the sixth transistor 216, the second end of the sixth transistor 216 and the fourth node N4 are connected in sequence. The control end of the fifth transistor 215 is connected with the first light emitting control line E1, and the control end of the sixth transistor 216 is connected with the second light emitting control line E2.
[0056] The control end of the third transistor 213 and the control end of the fourth transistor 214 are connected with the first scan line S1, the first end of the third transistor 213 is connected with the second node N2, the second end of the third transistor 213 is connected with the fourth node N4 through the first node N1 and the storage capacitor 220 in sequence, and the control end of the second transistor 212 is connected with the first node N1. The first end of the fourth transistor 214 is connected with the reset signal line Int, the second end of the fourth transistor 214 is connected with the fourth node N4, the control end of the first transistor 211 is connected with the second scan line S2, the first end of the first transistor 211 is connected with the data line Data, and the second end of the first transistor 211 is connected with the third node N3.
[0057] The control end of the seventh transistor 217 is connected with the third scan line S3, the control end of the eighth transistor 218 is connected with the fourth scan line S4, the control end of the ninth transistor 219 is connected with the fifth scan line S5, the first end of the seventh transistor 217, the first end of the eighth transistor 218 and the first end of the ninth transistor 219 are all connected with the fourth node N4, and the second end of the seventh transistor 217, the second end of the eighth transistor 218 and the second end of the ninth transistor 219 are respectively connected with the second power supply through a sub-pixel.
[0058] The voltage Vdd of the first power supply is greater than the voltage Vss of the second power supply, the voltage Vss of the second power supply is less than or equal to 0, for example, the voltage Vss of the second power supply is 0 or -1V, and the voltage of the reset signal line Int is less than or equal to the voltage Vss of the second power supply.
[0059] Referring to Figures 5 to 8 As shown in the figure, when the pixel driving circuit 200 works: In the reset stage T1, the first scan line S1 controls the third transistor 213 and the fourth transistor 214 to be turned on, the voltage of the fourth node N4 is pulled down to the voltage of the reset signal line Int, and at the same time, the first light-emitting control line E1 controls the first transistor 211 to be turned on, and the voltage Vdd of the first power supply is written into the first node N1 and the second node N2: In the compensation stage T2, the second scan line S2 controls the first transistor 211 to be turned on, the voltage of the data line Data is written into the third node N3, the second transistor 212 is turned on and discharged, and the gate voltage of the second transistor 212 (i.e. the voltage of the first node N1) is Vdata+Vth, Vdata is the voltage of the data line Data, and Vth is the threshold voltage of the second transistor 212; In the light emitting stage T3, the first scan line S1 controls the third transistor 213 and the fourth transistor 214 to be closed, the second scan line S2 controls the first transistor 211 to be closed, the first light emitting control line E1 controls the first transistor 211 to be opened, the second light emitting control line E2 controls the sixth transistor 216 to be opened, and at least one sub-pixel between the fourth node N4 and the second power supply emits light.
[0060] In the light emitting stage T3, the driving current I = K x (Vgs-Vth) 2 = K x Vdata 2 , Vgs is the gate-source voltage difference of the second transistor 212, that is, the voltage difference between the first node N1 and the fourth node N4, and K is a constant coefficient. The size of the driving current I is irrelevant to the threshold voltage of the driving transistor (the second transistor 212) and the power supply voltage, that is, the influence of the threshold voltage and the power supply voltage is eliminated.
[0061] It should be noted that each pixel unit 100 has only one green sub-pixel, and the pixel driving circuit 200 of the green sub-pixel can delete the seventh transistor 217, the eighth transistor 218 and the ninth transistor 219.
[0062] Embodiment two Referring to Figure 9 The display device in this embodiment includes the display panel 10 disclosed in embodiment one and the mainboard 20, and the mainboard 20 is connected with the display panel 10.
[0063] In this embodiment, the display device includes the display panel 10, the display panel 10 includes a plurality of pixel units 100, the pixel unit 100 includes a plurality of sub-pixels, the plurality of sub-pixels are distributed in the rectangular frame 120, the plurality of sub-pixels include one green sub-pixel, at least two blue sub-pixels and at least two red sub-pixels, and the green sub-pixel, the blue sub-pixel and the red sub-pixel exist in the row direction and the column direction. That is, in each pixel unit 100, there are red sub-pixels, green sub-pixels and blue sub-pixels arranged in the row direction, and there are red sub-pixels, green sub-pixels and blue sub-pixels arranged in the column direction. In the row direction and the column direction, the clear type sub-pixel rendering algorithm can be rendered at the same time to accurately adjust the brightness of each sub-pixel, make the image edge smoother, and thus improve the image clarity.
[0064] The terms "first", "second", and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0065] In this application, unless otherwise clearly indicated and limited, the terms "assembly", "connection", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0066] In the description of the present application, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application shall be within the scope of the present application.
Claims
1. A display panel comprising a plurality of pixel units arranged in an array along a row direction and a column direction, characterized in that, The pixel unit includes multiple sub-pixels distributed within a rectangle. The edges of the sub-pixels away from the center of the rectangle coincide with the rectangle. The multiple sub-pixels include one green sub-pixel, at least two blue sub-pixels, and at least two red sub-pixels. The orthographic projections of the green, blue, and red sub-pixels overlap in the row direction and also overlap in the column direction.
2. The display panel according to claim 1, characterized in that, In each pixel unit, the area ratio of all red sub-pixels, all green sub-pixels, and all blue sub-pixels is 5±0.5∶4±0.5∶7±0.
5.
3. The display panel according to claim 2, characterized in that, The pixel unit includes seven sub-pixels. When the seven sub-pixels and the sides of the rectangular frame coincide to form a square pattern, the adjacent sides of the seven sub-pixels are seamlessly joined, forming gaps or partial overlaps.
4. The display panel according to claim 3, characterized in that, The adjacent sides of the seven sub-pixels are seamlessly joined. The seven sub-pixels are designated as a first sub-pixel, a second sub-pixel, a third sub-pixel, a fourth sub-pixel, a fifth sub-pixel, a sixth sub-pixel, and a seventh sub-pixel. The first sub-pixel is rhomboid in shape and its area is 1 / 8 of the square pattern. The second sub-pixel is square in shape and its area is 1 / 8 of the square pattern. The third sub-pixel is an isosceles right triangle in shape and its area is 1 / 16 of the square pattern. The fourth sub-pixel is an isosceles right triangle in shape and its area is 1 / 4 of the square pattern. The fifth sub-pixel is an isosceles right triangle in shape and its area is 1 / 4 of the square pattern. The sixth sub-pixel is an isosceles right triangle in shape and its area is 1 / 16 of the square pattern. The seventh sub-pixel is an isosceles right triangle in shape and its area is 1 / 8 of the square pattern.
5. The display panel according to claim 4, characterized in that, The rectangle is divided into an upper region, a lower region, a left region, and a right region along its diagonal. The fourth sub-pixel is the green sub-pixel and is located in the upper region. The fifth sub-pixel is the blue sub-pixel and is located in the left region.
6. The display panel according to claim 5, characterized in that, The first sub-pixel, the second sub-pixel, and the third sub-pixel are all red sub-pixels, and the sixth sub-pixel and the seventh sub-pixel are blue sub-pixels. The first sub-pixel and the sixth sub-pixel are located in the lower region, the second sub-pixel and the third sub-pixel are located in the right region, and the seventh sub-pixel is located across the lower region and the right region at the lower right corner of the rectangle. The first sub-pixel, the sixth sub-pixel, the second sub-pixel, and the third sub-pixel are arranged sequentially along a diagonal of the rectangle.
7. The display panel according to claim 5, characterized in that, The distance between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel, and the seventh sub-pixel is e; the distance between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel is e; the distance between the first sub-pixel, the sixth sub-pixel, the second sub-pixel, the third sub-pixel, and the fifth sub-pixel is e; the distance between each pair of the first sub-pixel, the sixth sub-pixel, the second sub-pixel, and the third sub-pixel is f, where e > f.
8. The display panel according to claim 1, characterized in that, The display panel includes a substrate and a driving circuit layer. The driving circuit layer is disposed on one side of the substrate, and the sub-pixels are disposed on the side of the driving circuit layer away from the substrate. The driving circuit layer includes a plurality of pixel driving circuits for driving the sub-pixels to emit light. Sub-pixels of the same color in each pixel unit are connected to the same pixel driving circuit. The pixel driving circuit can control the combined emission of any one or more sub-pixels of the same color in the pixel unit.
9. The display panel according to claim 8, characterized in that, The pixel unit includes three red sub-pixels and three blue sub-pixels. The pixel driving circuit controlling the red or blue sub-pixels includes a light emission control module, a reset module, a data writing module, a compensation module, a switching module, a storage capacitor, and a second transistor. The data writing module is connected to the second terminal of the second transistor through a third node and is used to write the voltage of the data line to the third node in response to the second scan line signal. The light emission control module is connected to the third node, the second light emission control line, and the fourth node. Each of the three transistors of the switching module is connected to the second power supply through one of the sub-pixels. The reset module is connected to the fourth node and is used to write the voltage of the reset signal line to the fourth node in response to the first scan line signal. The storage capacitor is connected to the fourth node and the first node. The control terminal of the second transistor is connected to the first node. The compensation module is connected to the first node, the first terminal of the second transistor, and the first power supply and is used to write the threshold voltage of the second transistor to the first node in response to the first scan line and the first light emission control line signal.
10. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 9; The motherboard is connected to the display panel.