CN113327540A - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN113327540A CN113327540A CN202110610615.6A CN202110610615A CN113327540A CN 113327540 A CN113327540 A CN 113327540A CN 202110610615 A CN202110610615 A CN 202110610615A CN 113327540 A CN113327540 A CN 113327540A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
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Abstract
The embodiment of the invention discloses a display panel, a driving method thereof and a display device. The display panel includes: a plurality of light emitting devices including at least two sub light emitting devices that independently emit light; the number of sub-light emitting devices within the same light emitting device to be lit and the luminance of each sub-light emitting device to be lit determine the luminance of the light emitting device. Compared with the prior art, the embodiment of the invention avoids the problem of insufficient digital drive scanning time, and is beneficial to meeting the development trend of high resolution.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
With the development of display technology, the requirements of display panels are higher and higher, such as high resolution, high refresh rate, and high precision display. In the prior art, the driving methods of the light emitting device can be divided into two types, analog driving and digital driving. However, the analog signal is likely to be mixed with noise, and it is difficult to achieve a high-precision gray scale value. Digital driving has the advantages of low image noise and fast switching speed. However, the requirements for refresh frame rate and gray scale are higher and higher, and the digital driving needs to divide sub-fields, so that the writing time of each row is very short, and there is a problem that the digital driving is difficult to realize high resolution.
Disclosure of Invention
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for avoiding the problem of insufficient digital driving scanning time and meeting the development trend of high resolution.
In order to achieve the technical purpose, the embodiment of the invention provides the following technical scheme:
a display panel, comprising:
a plurality of light emitting devices including at least two sub light emitting devices that independently emit light; the number of sub-light emitting devices within the same light emitting device to be lit and the luminance of each sub-light emitting device to be lit determine the luminance of the light emitting device.
Further, the light-emitting brightness of at least two sub light-emitting devices positioned in the same light-emitting device is constant and different;
preferably, the light emitting brightness of at least two sub-light emitting devices in the same light emitting device is increased in an equal proportion;
preferably, the light emitting device includes eight of the sub light emitting devices, and a ratio of light emitting luminance of the eight sub light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128;
or, the light emitting device comprises nine sub-light emitting devices, and the ratio of the light emitting brightness of the nine sub-light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128: 256.
further, the at least two sub-light emitting devices have the same size and different display gray scales;
or, the at least two sub-light emitting devices have different sizes and the same display gray scale.
Furthermore, the display panel also comprises a plurality of pixel circuits, and the pixel circuits correspond to the light-emitting devices one by one; the pixel circuit comprises at least two sub-pixel circuits, the at least two sub-pixel circuits correspond to the at least two sub-light emitting devices one by one, and the sub-pixel circuits are used for providing driving currents for the corresponding sub-light emitting devices;
preferably, the display panel further includes a plurality of scanning signal lines, at least two sub-pixel circuits in one of the pixel circuits being connected to the same scanning signal line;
preferably, the sub-pixel circuits in one of the pixel circuits are all connected to the same scanning signal line.
Further, the display panel further includes:
a plurality of data voltage signal lines and a plurality of data signal lines; the data voltage signal line is used for providing data voltages for the sub-pixel circuits;
a voltage control circuit comprising at least two switch units, the at least two switch units corresponding to the at least two sub-pixel circuits one to one, and the at least two switch units corresponding to the at least two data voltage signal lines one to one; the switch unit comprises a control end, and the control end of the switch unit is connected with the corresponding data signal line; the switch unit is used for responding to the data signal on the data signal line to control whether the corresponding sub-light-emitting device is lightened;
preferably, the switching units are connected in series in the data writing paths of the corresponding sub-pixel circuits; or, the switch units are connected in series in the driving current paths of the corresponding sub-pixel circuits;
preferably, at least two of the sub-pixel circuits located in the same pixel circuit correspond to the data signal lines one to one; or at least two sub-pixel circuits in the same pixel circuit are arranged in an array, and the sub-pixel circuits in the same row or column correspond to one data signal line;
preferably, the switch unit includes a transistor, a gate of the transistor is used as a control terminal of the switch unit, a first pole of the transistor is used as a voltage input terminal of the switch unit, and a second pole of the transistor is used as a voltage output terminal of the switch unit.
Further, the display panel further includes:
the scanning driving circuit is connected with the scanning signal input end of the sub-pixel circuit; the scanning driving circuit is used for generating analog scanning signals output line by line according to the digital scanning signals and transmitting the analog scanning signals to the sub-pixel circuit through scanning lines;
the data driving circuit is connected with the control end of the switch unit; the data driving circuit is used for generating an analog data signal according to the digital data signal;
preferably, the display panel further includes:
the time sequence controller comprises a digital scanning output end and a data time sequence output end, and is used for generating the digital scanning signal and outputting the digital scanning signal through the digital scanning output end; the data processing device is used for generating a data processing time sequence signal and outputting the data processing time sequence signal through the data time sequence output end;
the data processor comprises an image data stream input end, a data time sequence input end and a digital data output end, wherein the image data stream input end is connected with an image data stream, the data time sequence input end is connected with the data time sequence output end, and the digital data output end is connected with the data driving circuit; the data processor is configured to process the image data stream and generate the digital data signal.
Optionally, the display panel further comprises:
a plurality of data signal lines for supplying data voltages to the sub-pixel circuits; at least two sub-pixel circuits in the same pixel circuit are respectively connected with different data voltages;
preferably, at least two of the sub-pixel circuits located in the same pixel circuit are connected to the data signal lines in a one-to-one correspondence; or at least two sub-pixel circuits in the same pixel circuit are arranged in an array, and the sub-pixel circuits in the same row or column are connected with one data signal line;
preferably, the display panel further includes:
the scanning driving circuit is connected with the scanning signal input end of the sub-pixel circuit; the scanning driving circuit is used for generating analog scanning signals output line by line according to the digital scanning signals and transmitting the analog scanning signals to the sub-pixel circuit through scanning lines;
the data driving circuit is connected with the data signal input end of the sub-pixel circuit; the data driving circuit is used for generating the data voltage according to a digital data signal and transmitting the data voltage to the sub-pixel circuit through the data signal line.
Further, the outer contour shape of the light emitting device includes at least one of a rectangle, a diamond, a triangle, a trapezoid, a circle, or an ellipse.
Accordingly, the present invention also provides a display device comprising: a display panel as claimed in any of the embodiments of the invention.
Accordingly, the present invention also provides a driving method of a display panel including a plurality of light emitting devices including at least two sub light emitting devices; the driving method of the display panel includes:
determining the lighting number of the sub-light emitting devices positioned in the light emitting device and the brightness of each lighted sub-light emitting device according to the brightness of the light emitting device;
driving the sub light emitting devices within the light emitting device to independently emit light.
The light-emitting device comprises at least two sub-light-emitting devices, and each sub-light-emitting device independently emits light, so that zero, any one, any two, any multiple or all of the sub-light-emitting devices can be lightened, the sub-light-emitting devices are arranged and combined, and the brightness of the light-emitting devices is adjusted. The embodiment of the present invention divides the light emitting area of one light emitting device into the light emitting areas of at least two sub-light emitting devices, and replaces the sub-fields in the conventional digital driving with the light emitting areas of the light emitting devices. And, in the embodiment of the present invention, the sub-light emitting devices in one light emitting device can perform writing/storing of data all at one scanning without dividing a plurality of subfields to perform writing/storing of data, respectively. Compared with the prior art, the embodiment of the invention increases the row writing time, is favorable for avoiding the problem of insufficient scanning time of digital drive in the prior art, and is favorable for realizing high refreshing frequency and high resolution.
Drawings
FIG. 1 is a schematic diagram of a driving principle of a digital driver;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light emitting device according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a state of a light emitting device according to an embodiment of the present invention when displaying different gray scales;
fig. 5 is a schematic structural diagram of another light-emitting device provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention;
fig. 11 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to an embodiment of the invention;
fig. 12 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention;
fig. 13 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention;
fig. 14 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention;
fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 16 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention;
fig. 17 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention;
fig. 18 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, the conventional digital driving has a problem that the writing time per line is very short and it is difficult to achieve high resolution. The inventor researches and finds that the specific reasons are as follows:
fig. 1 is a schematic diagram of a driving principle of a conventional digital driver. Referring to FIG. 1, 256 gray levels (8 bits) are illustrated as an example. The 8-bit data is divided into 1 to 8 subfields (subframes) from low to high, and the subfields (subframes) SF1 to SF8, and one frame time is divided into 8 scanning times and 8 holding (lighting) times. The display panel comprises n rows of pixels, the pixels are scanned from the 1 st row to the nth row once in the scanning time of one sub-frame, the data signals are stored, and then the holding time of the n rows of pixels in one sub-frame is controlled to form a picture of one sub-frame. The picture holding time of 8 sub-frames is different, and the display gray scale is different, so that the original picture is synthesized, and human eyes can perceive the synthesized picture.
However, as is clear from the above analysis, the digital driving requires division of sub-fields, so that the scanning time per line is insufficient, and the problem of insufficient data writing tends to occur in pixels, and this problem becomes more serious as the refresh frequency increases and the number of pixels increases, and therefore, there is a problem that it is difficult to achieve high resolution in the digital driving.
In view of this, an embodiment of the present invention provides a display panel. Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a light emitting device according to an embodiment of the present invention. Referring to fig. 2 and 3, the display panel includes a plurality of light emitting devices 100, the light emitting devices 100 including at least two sub light emitting devices 110, the sub light emitting devices 110 independently emitting light; the number of sub light emitting devices 110 within the same light emitting device 100 to be lit, and the luminance of each sub light emitting device 110 to be lit, together determine the luminance of the light emitting device 100. In which one light emitting device 100 is divided into at least two sub light emitting devices 110, and when the size of the sub light emitting devices 110 is too small to be distinguished by human eyes, the change in the number of the sub light emitting devices 110 turned on can only be perceived by human eyes as a change in brightness.
The light emitting device 100 includes at least two sub-light emitting devices 110, and each sub-light emitting device 110 emits light independently, so that zero, any one, any two, any multiple, or all of the sub-light emitting devices 110 can be lit, and the sub-light emitting devices 110 can be arranged and combined, thereby adjusting the brightness of the light emitting device 100. It is equivalent to the embodiment of the present invention to divide the light emitting area of one light emitting device 100 into the light emitting areas of at least two sub-light emitting devices 110, and replace the sub-fields in the conventional digital driving with the light emitting areas of the light emitting devices 100. Also, in the embodiment of the present invention, the sub light emitting devices 110 in one light emitting device 100 can perform writing/storing of data all at one scanning without dividing a plurality of subfields to perform writing/storing of data, respectively. Compared with the prior art, the embodiment of the invention increases the row writing time, is beneficial to avoiding the problem of insufficient digital drive scanning time in the prior art, and is beneficial to realizing high refreshing frequency and high resolution.
It should be noted that the number of the sub light emitting devices 110 and the light emission luminance of each sub light emitting device 110 may be set as necessary. In some embodiments, the space of one sub-pixel of the display panel is relatively large, but the size of the light emitting device 100 is relatively small, and therefore, based on the existing resolution, the space of one sub-pixel is enough to accommodate a plurality of sub-light emitting devices 110, so that the plurality of sub-light emitting devices 110 form one light emitting device 100.
On the basis of the above-described embodiments, alternatively, the light-emission luminances of at least two sub light-emitting devices 110 located within the same light-emitting device 100 are constant and different. The different brightness is beneficial to realizing richer display gray scales, so that the display effect is promoted. The constant light emitting brightness of each sub-light emitting device 110 means that each sub-light emitting device 110 is driven by a constant data signal, for example, the light emitting brightness of the sub-light emitting device 110 is a low gray scale, and the corresponding data signal is a constant low gray scale voltage; the light emitting brightness of the sub light emitting device 110 is a high gray scale, and the corresponding data signal is a constant high gray scale voltage. The embodiment of the present invention is configured such that the advantages of digital driving and analog driving are combined, wherein the light emitting device 100 is divided into at least two sub light emitting devices 110, and each sub light emitting device 110 is configured to have a constant luminance, and the constant luminances are mixed to form the luminance of the sub light emitting device 110 together, which is equivalent to digital driving; the sub light emitting devices 110 are set to different luminances and driven to light at the same time, in such a manner as to correspond to analog driving. Therefore, the embodiment of the invention adopts the digital-analog mixing idea, combines the advantages of low noise and high switching speed of digital drive and the advantage of long scanning time of analog drive, and ensures rich gray scale on the basis of realizing high refreshing frequency and high resolution.
On the basis of the above embodiments, optionally, the light emitting brightness of each sub-light emitting device 110 in the same light emitting device 100 is sequentially increased, which is beneficial to realizing more gray scale combinations and improving the display effect.
Further, the light emitting luminances of at least two sub light emitting devices 110 located within the same light emitting device 100 are increased in equal proportion. Illustratively, the sub light emitting devices 110 are the same in size and different in display gray scale, wherein the display gray scale of the sub light emitting devices 110 may be adjusted by adjusting the size of the data signal. The embodiment of the invention sets the equal proportion increasing of the luminance of the sub-light emitting device 110, and the driving chip is easy to find the voltage of the data signal corresponding to each gray scale, thereby being beneficial to gray scale calculation.
With continued reference to fig. 3, on the basis of the above embodiments, optionally, the light emitting device 100 includes nine sub-light emitting devices 110, and the ratio of the light emitting luminances of the nine sub-light emitting devices 110 is 1: 2: 4: 8: 16: 32: 64: 128: 256. that is, the weights of the light emitting luminances of the nine sub-light emitting devices 110 are 1, 2, 4, 8, 16, 32, 64, 128, and 256, respectively. In fig. 3, the light emission luminance of the self-light emitting device 100 is represented in grayscale, and darker colors indicate lower grayscale levels when it is turned on, while lighter colors indicate higher grayscale levels when it is turned on. Illustratively, the nine sub light emitting devices 110 are arranged in an array, the gray scale level of the sub light emitting device 110 located at (1, 1) bit is 1, the gray scale level of the sub light emitting device 110 located at (1, 2) bit is 2, the gray scale level of the sub light emitting device 110 located at (1, 3) bit is 4, … …, and so on, the gray scale level of the sub light emitting device 110 located at (3, 2) bit is 128, and the gray scale level of the sub light emitting device 110 located at (3, 3) bit is 256. The 512 gray scales can be realized by lighting the respective sub light emitting devices 110 in a combination of arrangement.
Specifically, fig. 4 is a schematic diagram of a state of the light emitting device according to the embodiment of the present invention when displaying different gray scales. As shown in fig. 4, the sub light emitting device 110 is represented in black while the sub light emitting device 110 is represented in white. In order to realize the 0 gray scale, all the sub light emitting devices 110 are not lighted up in the light emitting device 100; the light emitting device 100 lights the sub light emitting devices 110 of (1, 1) bits in order to realize the 1 gray scale; to realize the 2 gray scale, the (1, 2) -bit sub light emitting devices 110 are lit; to realize the 3 gray scale, the (1, 1) -bit and (1, 2) -bit sub-light emitting devices 110 are lit; to realize the 4 gray scale, the (1, 3) -bit sub light emitting devices 110 are lit; … …, respectively; by analogy, to realize the 508 gray scale, the sub light emitting devices 110 other than the (1, 1) -bit and (1, 2) -bit sub light emitting devices 110 are all lit; to realize the 509 gray scale, the sub light emitting devices 110 other than the (1, 2) -bit sub light emitting device 110 are all lighted; to realize the 510 gray scale, the sub light emitting devices 110 except for the (1, 1) -bit sub light emitting device 110 are all lighted; to realize the 511 gray scale, all the sub light emitting devices 110 are lighted. Thus, dividing the light emitting device 100 into nine sub-light emitting devices 110 can realize gray scales of 0 to 511 for 512 gray scales.
Fig. 5 is a schematic structural diagram of another light-emitting device according to an embodiment of the present invention. Referring to fig. 5, in one embodiment of the present invention, optionally, the light emitting device 100 includes eight sub-light emitting devices 110, and the ratio of the light emitting brightness of the eight sub-light emitting devices 110 is 1: 2: 4: 8: 16: 32: 64: 128. i.e., the weights of the light emitting luminances of the eight sub light emitting devices 110 are 1, 2, 4, 8, 16, 32, 64, and 128, respectively. The sub light emitting devices 110 are lit up in a permutation and combination manner, and gray scales of 0 to 255 can be realized, for a total of 256 gray scales.
It should be noted that, in the above embodiments, the sub light emitting devices 110 are exemplarily illustrated to be arranged in three rows and three columns and in two rows and four columns, which is not a limitation of the present invention. In other embodiments, the sub light emitting devices 110 may be arranged in a row or a column. And, the outer contour shape of the light emitting device 100 is exemplarily shown as a rectangle in the above embodiments, not limiting the present invention. In other embodiments, the arrangement of the sub-light emitting devices 110 in the light emitting device 100 may be set to other arrangements to adapt to different pixel arrangements. Illustratively, as shown in fig. 6, the dotted line represents the outer contour of the light emitting device 100, which has a diamond shape; as shown in fig. 7, the dotted line indicates the outer contour of the light emitting device 100, which is triangular in shape; as shown in fig. 8 and 9, the dotted line represents the outer contour of the light emitting device 100, which is trapezoidal in shape; as shown in fig. 10, the dotted line indicates the outer profile of the light emitting device 100, the shape of which can be regarded as a combination of two trapezoids. It is understood that when the number of the sub light emitting devices 110 is large, the outer contour of the light emitting device 100 may also be circular or elliptical.
On the basis of the above embodiments, there are optionally various setting manners for realizing the different light-emitting brightness of the sub light-emitting devices 110. In one embodiment, at least two of the sub light emitting devices 110 have the same size and display gray scales different. In another embodiment, the at least two sub light emitting devices 110 have different sizes and the same display gray scale, and in other embodiments, the sizes and the display gray scales of the at least two sub light emitting devices 110 may be different. The luminance of the sub-light emitting device 110 is perceived by human eyes, and the luminance is related to not only the display gray scale but also the display area of the sub-light emitting device 110. The size of the sub light emitting device 110 determines the display area of the sub light emitting device 110, and the larger the size of the sub light emitting device 110, the smaller the size of the sub light emitting device 110. Therefore, the embodiment of the present invention sets the sizes and/or display gray scales of the sub light emitting devices 110 to be different, and can realize different light emitting brightness. Specifically, in the case where the sizes of the sub light emitting devices 110 are the same, the light emission luminance is larger as the display gray scale is larger, and the light emission luminance is smaller as the display gray scale is smaller; in the case where the display gradations of the sub light emitting devices 110 are the same, the light emission luminance is larger as the size is larger, and the light emission luminance is smaller as the display area is smaller.
In the above embodiments, the difference of the display gray scale is determined by the driving current flowing through the sub light emitting device 110, the driving current is generated by the pixel circuit, and the following description is made about the arrangement of the pixel circuit.
Alternatively, the display panel includes a plurality of pixel circuits, which correspond one-to-one to the light emitting devices 100. Fig. 11 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to an embodiment of the present invention. Referring to fig. 11, in an embodiment of the present invention, optionally, the pixel circuit 200 includes at least two sub-pixel circuits 210, the at least two sub-pixel circuits 210 correspond to the at least two sub-light emitting devices 110 one to one, and the sub-pixel circuits 210 are configured to provide driving currents to the corresponding sub-light emitting devices 110. Fig. 11 exemplarily shows that nine sub-light emitting devices 110 are included in one light emitting device 100, and accordingly, one pixel circuit 200 includes nine sub-pixel circuits 210, and the nine sub-pixel circuits 210 are respectively connected to different data voltages. For example, from left to right the first subpixel circuit 210 is coupled to the data voltage VData1, the second subpixel circuit 210 is coupled to the data voltages VData2, … …, and so on, the ninth subpixel circuit 210 is coupled to the data voltage VData 9. The embodiment of the invention is arranged in such a way that the sub-light emitting devices 110 are independently controlled, so that different light emitting devices 100 are controlled to display different brightness.
With continued reference to fig. 11, in an embodiment of the invention, the display panel optionally further includes a plurality of scan signal lines 220, the scan signal lines 220 provide scan signals scan to the sub-pixel circuits 210, and the sub-pixel circuits 210 in one pixel circuit 200 are all connected to the same scan signal line 220. That is, all the sub-pixel circuits 210 in one pixel circuit 200 realize the writing and storing of the data signals in one scanning time. With this arrangement, the number of scanning signal lines 220 can be minimized, the row writing time can be increased, and a high refresh frequency and a high resolution can be realized.
In other embodiments, each sub-pixel circuit 210 in one pixel circuit 200 may be connected to a different scanning signal line 220, or two sub-pixel circuits 210 may be connected to the same scanning signal line 220, or a plurality of sub-pixel circuits 210 may be connected to the same scanning signal line 220. Compared with the case that each sub-pixel circuit 210 is connected with different scanning signal lines 220, the case that at least two sub-pixel circuits 210 are connected with the same scanning signal line 220 can reduce the number of the scanning signal lines 220 and increase the row writing time, thereby being beneficial to realizing high refreshing frequency and high resolution.
Fig. 12 is a schematic diagram illustrating a connection relationship between another pixel circuit and a light emitting device according to an embodiment of the present invention. Referring to fig. 12, on the basis of the above embodiments, optionally, the display panel further includes a plurality of data voltage signal lines 310, a plurality of data signal lines 330, and a voltage control circuit 300. The data voltage signal line 310 is used to provide a data voltage to the sub-pixel circuit 210. The voltage control circuit 300 includes at least two switch units 320, the at least two switch units 320 corresponding to the at least two sub-pixel circuits 210 one to one, and the at least two switch units 320 corresponding to the at least two data voltage signal lines 310 one to one; the switch unit 320 includes a control terminal 321, the control terminal 321 of the switch unit 320 is connected to the corresponding data signal line 330, and the switch unit 320 is configured to control whether the corresponding sub light emitting device 110 is turned on or not in response to the data signal on the data signal line 330. The embodiment of the present invention is configured in this way, a fixed data voltage can be provided to each sub-pixel circuit 210, so that the luminance generated by each sub-light emitting device 110 is fixed and unchanged, which is beneficial to the luminance generated by each sub-light emitting device 110 to accord with a preset weight value, and is beneficial to each sub-light emitting device 110 to stably emit light. In addition, the embodiment of the invention arranges the switch unit 320 on the display panel, does not need the data signal line 330 to provide a data signal with multi-level change, and equivalently transfers part of functions of the data driving chip to the display panel, thereby being beneficial to simplifying the design difficulty of the data driving chip and reducing the cost of the display panel.
There are various positions for the switch units 320, and in one embodiment, the switch units 320 are connected in series in the data writing path of the corresponding sub-pixel circuits 210. The data write path refers to a circuit path for transmitting a data voltage to the gate of the driving transistor. Referring to fig. 12, taking the structure of the sub-pixel circuit 210 as 2T1C as an example, the sub-pixel circuit 210 includes a data writing transistor T1, a driving transistor T2, and a storage capacitor CS. The data write path refers to a circuit path from the data voltage signal line 310, the data write transistor T1 to the gate of the driving transistor T2.
In another embodiment, the switching units 320 are connected in series in the driving current path of the corresponding sub-pixel circuit 210. The driving current path refers to a circuit path for the driving transistor to generate and transmit driving current to the sub-light emitting device 110. Referring to fig. 12, taking the structure of the sub-pixel circuit 210 as 2T1C as an example, the first electrode of the driving transistor T2 is connected to the first power source VDD, the second electrode of the driving transistor T2 is connected to the anode of the sub-light emitting device 110, and the cathode of the sub-light emitting device 110 is connected to the second power source VSS. The driving current path refers to a circuit path from the first power source VDD, the driving transistor T2, the sub light emitting device 110 to the second power source VSS.
With continued reference to fig. 12, optionally, the switch unit 320 further includes voltage input terminals and voltage output terminals, the voltage input terminals are connected with the data voltage signal lines 310 in a one-to-one correspondence, and the voltage output terminals are connected with the sub-pixel circuits 210 in a one-to-one correspondence. Illustratively, one light emitting device 100 includes nine sub-light emitting devices 110, the sizes of the sub-light emitting devices 110 are the same, and the luminance of each sub-light emitting device 110 is different, so that the driving current generated by each sub-pixel circuit 210 is different, and nine different data voltages are required. Accordingly, the voltage control circuit 300 includes nine switching units 320, the voltage input terminals of which are connected to the nine data voltage signal lines 310, respectively. Specifically, the first subpixel circuit 210 from left to right is connected to the first data voltage signal line 310 from top to bottom, and the first data voltage signal line 310 supplies the data voltage VData1 to the first subpixel circuit 210; the second sub-pixel circuit 210 is connected to a second data voltage signal line 310, and the second data voltage signal line 310 provides a data voltage VData2 to the second sub-pixel circuit 210; by analogy, … …, the ninth subpixel circuit 210 is connected to the ninth data voltage signal line 310, and the ninth data voltage signal line 310 provides the ninth subpixel circuit 210 with the data voltage VData 9. Wherein the data voltage on each data voltage signal line 310 is applied to each sub-light emitting device 110 through each sub-pixel circuit 210, such that the luminance generated by each sub-light emitting device 110 meets a preset weight (e.g., 1: 2: 4: 8: 16: 32: 64: 128: 256).
Whether the data voltage on the data voltage signal line 310 can be transmitted to the corresponding sub-pixel circuit 210 is controlled by the data signal. The Data signal may be in various forms, for example, one light emitting device 100 includes nine sub-light emitting devices 110, and the Data signal is corrected 9bit-Data, that is, the Data signal corresponding to one light emitting device 100 includes nine bits of digital Data, respectively Data1, Data2, … … and Data9, and each bit of Data controls one switch unit 320. Illustratively, the light emitting principle of one light emitting device 100 is that, when the nth bit of the data signal is "1", the control switch unit 320 is turned on, the data voltage VData [ n ] can be transmitted to the currently scanned sub-pixel circuit 210, and the sub-light emitting device 110 is lit; when the nth bit of the data signal is "0", the switching unit 320 is turned off, the data voltage Vdata [ n ] cannot be transmitted to the currently scanned sub-pixel circuit 210, and the sub-light emitting device 110 is turned off.
In the embodiment of the present invention, the switch unit 320 is disposed between the data voltage signal line 310 and the sub-pixel circuit 210, so that the output of the data voltage can be cut off when the corresponding sub-light emitting device 110 does not emit light, and the sub-pixel circuit 210 does not operate, thereby being beneficial to saving the power consumption of the circuit.
Fig. 13 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention. Referring to fig. 13, alternatively, the voltage input terminals are connected to the sub-pixel circuits 210 in a one-to-one correspondence, and the voltage output terminals are connected to the sub-light emitting devices 110 in a one-to-one correspondence. In the embodiment of the present invention, the switch unit 320 is disposed between the sub-pixel circuit 210 and the sub-light emitting device 110, so that the generation path of the driving current can be cut off when the corresponding sub-light emitting device 110 does not emit light, and the sub-pixel circuit 210 does not operate.
With continued reference to fig. 13, in one embodiment of the present invention, optionally, the switch unit 320 includes a transistor T3, a gate of the transistor T3 is used as the control terminal of the switch unit 320, a first pole of the transistor T3 is used as the voltage input terminal of the switch unit 320, and a second pole of the transistor T3 is used as the voltage output terminal of the switch unit 320. With this configuration, it is advantageous to integrate the switch unit 320 on the display panel, and preferably, the type of the transistor T3 is the same as that of the transistor in the sub-pixel circuit 210, so that the sub-pixel circuit 210 and the switch unit 320 can be fabricated simultaneously in the same process, thereby simplifying the process and reducing the cost.
In the above embodiments, it is exemplarily shown that at least two sub-pixel circuits 210 located in the same pixel circuit 200 correspond to the data signal lines 330 one to one, which is not a limitation of the present invention. In other embodiments, as shown in fig. 14, at least two sub-pixel circuits 210 in the same pixel circuit 200 are arranged in an array, and the sub-pixel circuits 210 in the same row or column correspond to one data signal line 330.
Illustratively, one light emitting device 100 includes nine sub-light emitting devices 110, the nine sub-light emitting devices 110 are arranged in an array of three rows and three columns, correspondingly, the nine sub-pixel circuits 210 are arranged in an array of three rows and three columns, the sub-pixel circuits 210 in the first column are all connected to the first Data signal line 330, and the first Data signal line 330 transmits the Data signal Data1 in a time-sharing manner; the sub-pixel circuits 210 in the second column are all connected to a second Data signal line 330, and the second Data signal line 330 transmits a Data signal Data2 in a time-sharing manner; the sub-pixel circuits 210 in the third column are all connected to the third Data signal line 330, and the third Data signal line 330 transmits the Data signal Data3 in a time-sharing manner. Accordingly, the sub-pixel circuits 210 in the first row are all connected to the first Scan signal line 220, and the first Scan signal line 220 transmits the Scan signal Scan 1; the sub-pixel circuits 210 in the second row are all connected to a second Scan signal line 220, and the second Scan signal line 220 transmits a Scan signal Scan 2; the sub-pixel circuits 210 in the third row are all connected to a third scanning signal line 220, and the third scanning signal line 220 transmits a scanning signal Scan 3. When the Scan signal Scan1 is transmitted to the first Scan signal line 220, the three data signal lines 330 respectively supply data signals to the three sub-pixel circuits 210 in the first row; when the Scan signal Scan2 is transmitted to the second Scan signal line 220, the three data signal lines 330 respectively provide data signals to the three sub-pixel circuits 210 in the second row, and so on. In the embodiment of the invention, the sub-pixel circuits 210 in the same row or column are arranged to correspond to one data signal line 330, so that the number of the data signal lines 330 can be reduced.
On the basis of the above embodiments, the embodiments of the present invention further provide a setting manner of a scanning system of a display panel. Fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 15, in an embodiment, the display panel optionally further includes a scan driving circuit 400 and a data driving circuit 500. The scan driving circuit 400 is connected to a scan signal input terminal of the sub-pixel circuit 210; the scan driving circuit 400 is configured to generate analog scan signals output line by line according to the digital scan signals, and transmit the analog scan signals to the sub-pixel circuits 210 through the scan signal lines 220. The data driving circuit 500 is connected to the control terminal of the switching unit 320; the data driving circuit 500 is used to generate an analog data signal according to the digital data signal.
Wherein, the scan signal input terminal of the sub-pixel circuit 210 is used for inputting the scan signal, and for the 2T1C structure, the sub-pixel circuit 210 includes a scan signal input terminal, and the input scan signal is transmitted to the gate of the data writing transistor; for the 7T1C configuration, the sub-pixel circuit 210 includes three, four or other scan signal inputs for receiving scan signals at different timings, such as an initialization scan signal, a data write scan signal or a light emission control signal. The analog data signal generated by the data driving circuit 500 is used to control whether the corresponding switch unit 320 is turned on or not, so as to control whether the data voltage is transmitted to the corresponding sub-pixel circuit 210 or not.
Corresponding to the voltage control circuit 300, the data driving circuit 500 provided in the embodiment of the present invention only outputs analog data signals of two levels to control the switch unit 320 to be turned on or off, so that compared with the existing data driving circuit 500, the data driving circuit 500 provided in the embodiment of the present invention has a simple structure, and is beneficial to reducing the cost.
With continued reference to fig. 15, in one embodiment, the display panel optionally further comprises: a timing controller 600 and a data processor 700. The timing controller 600 includes a digital scan output terminal 601 and a data timing output terminal 602, and the timing controller 600 is configured to generate a digital scan signal and output the digital scan signal through the digital scan output terminal 601; and for generating a data processing timing signal and outputting it through the data timing output 602. The data processor 700 comprises an image data stream input terminal 701, a data timing input terminal 702 and a digital data output terminal 703, wherein the image data stream input terminal 701 is connected to the image data stream, the data timing input terminal 702 is connected to the data timing output terminal 602, and the digital data output terminal 703 is connected to the data driving circuit 500; the data processor 700 is operative to process the image data stream and generate digital data signals.
The timing controller 600 and the data processor 700 are digital processors, and the generated signals are digital signals. Specifically, the timing controller 600 generates digital scan signals and data processing timing signals, and the data processor 700 generates digital data signals. The data processing timing signal is a control and synchronization signal for the data processor 700. The data processor 700 may process the image data stream by expanding the number of bits of the image data stream, compensating the image data stream, etc., for example, converting an 8-bit image data stream into a 9-bit, 11-bit or other pixel signal to optimize the display effect.
The timing controller 600, the data processor 700, the scan driving circuit 400, and the data driving circuit 500 constitute a scanning system. Illustratively, the working principle of the scanning system is: the image data stream enters the data processor 700 and passes through the data processor 700 to obtain a 9-bit pixel signal. Meanwhile, the timing controller 600 generates a digital scan signal and a data processing timing signal. The digital scan signal is processed by the scan driving circuit 400 to become an analog scan signal, which is connected to the scan signal input terminal of the sub-pixel circuit 210 for row gate. The digital data signal is processed by the data driving circuit 500 to be an analog data signal, the switching unit 320 in the voltage control circuit 300 is controlled to select a desired data voltage, and the selected data voltage is connected to the corresponding sub-pixel circuit 210 to provide display data.
In the above embodiments, the arrangement positions of the scan driving circuit 400, the data driving circuit 500, the timing controller 600, and the data processor 700 may be set as needed. For example, the scan driving circuit 400, the data driving circuit 500, the timing controller 600, and the data processor 700 are disposed on the rear surface of the display panel, and the scan driving circuit 400 and the data driving circuit 500 are connected to the pixel circuits 200 on the front surface of the display panel through a flexible circuit board or a bent display panel. For another example, the scan driving circuit and the data driving circuit 500 are disposed in a front frame region of the display panel, and the timing controller 600 and the data processor 700 are disposed on a back surface of the display panel, and are connected to the scan driving circuit 400 and the data driving circuit 500 on the front surface of the display panel through a flexible circuit board or a bent display panel.
In the above embodiments, the data voltage signal provided by the voltage control circuit 300 is exemplarily shown and is not a limitation of the present invention. Fig. 16 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention. Referring to fig. 16, in another embodiment, the data signal line 330 may also be arranged to directly supply the data voltage to the sub-pixel circuit 210. Thus, at least two sub-pixel circuits 210 in the same pixel circuit 200 are respectively connected to different data voltages through different data signal lines 330. With such an arrangement, the data signal line 330 can provide a fixed data voltage to each sub-pixel circuit 210, so that the luminance generated by each sub-light emitting device 110 is fixed, which is beneficial for the luminance generated by each sub-light emitting device 110 to accord with a preset weight value, i.e. the level generated by each data signal line 330 is several preset fixed values with a small number, which is beneficial for each sub-light emitting device 110 to stably emit light. In addition, in this embodiment, the voltage control circuit 300 and the data voltage signal line 310 can be omitted, which is advantageous for simplifying the wiring design of the display panel.
With continued reference to fig. 16, optionally, at least two sub-pixel circuits 210 located within the same pixel circuit 200 are connected to the data signal lines 330 in a one-to-one correspondence. This arrangement is advantageous in that each data signal line 330 is arranged to transmit a signal of a fixed level. Illustratively, each data signal line 330 transmits only 0 or a preset one fixed level; when the data signal line 330 transmits 0, the sub-pixel circuit 210 is controlled not to generate a driving current; when the data signal transmits a fixed level, the sub-pixel circuit 210 is controlled to generate a driving current with a predetermined weight.
Fig. 17 is a schematic diagram illustrating a connection relationship between a pixel circuit and a light emitting device according to another embodiment of the present invention. Referring to fig. 17, optionally, at least two sub-pixel circuits 210 in the same pixel circuit 200 are arranged in an array, and the sub-pixel circuits 210 in the same row or column are connected to a data signal line 330. Illustratively, one light emitting device 100 includes nine sub-light emitting devices 110, the nine sub-light emitting devices 110 are arranged in an array of three rows and three columns, correspondingly, the nine sub-pixel circuits 210 are arranged in an array of three rows and three columns, the sub-pixel circuits 210 in the first column are all connected to the first Data signal line 330, and the first Data signal line 330 transmits the Data signal Data1 in a time-sharing manner; the sub-pixel circuits 210 in the second column are all connected to a second Data signal line 330, and the second Data signal line 330 transmits a Data signal Data2 in a time-sharing manner; the sub-pixel circuits 210 in the third column are all connected to the third Data signal line 330, and the third Data signal line 330 transmits the Data signal Data3 in a time-sharing manner. In the embodiment of the invention, the sub-pixel circuits 210 in the same row or column are arranged to correspond to one data signal line 330, so that the number of the data signal lines 330 can be reduced.
On the basis of the above embodiments, optionally, as in the scheme of providing the voltage control circuit 300, the display panel further includes a scan driving circuit, and the scan driving circuit is connected to the scan signal input terminal of the sub-pixel circuit 210; the scan driving circuit is configured to generate analog scan signals output line by line according to the digital scan signals, and transmit the analog scan signals to the sub-pixel circuit 210 through the scan lines. Unlike the scheme in which the voltage control circuit 300 is provided, for the scheme in which the voltage control circuit 300 is not provided, the data driving circuit is connected to the data signal input terminal of the sub-pixel circuit 210; the data driving circuit is used for generating a data voltage according to the digital data signal and transmitting the data voltage to the sub-pixel circuit 210 through the data signal line 330. That is, in the present embodiment, the data signal generated by the data driving circuit includes the data voltage.
In summary, the light emitting device 100 includes at least two sub light emitting devices 110, and each sub light emitting device 110 emits light independently, so that zero, any one, any two, any multiple, or all of the sub light emitting devices 110 can be lit, thereby implementing the arrangement and combination of the sub light emitting devices 110, and further implementing the brightness adjustment of the light emitting device 100. Also, in the embodiment of the present invention, the sub light emitting devices 110 in one light emitting device 100 can perform writing/storing of data all at one scanning without dividing a plurality of subfields to perform writing/storing of data, respectively. Compared with the prior art, the embodiment of the invention increases the row writing time, is beneficial to avoiding the problem of insufficient digital drive scanning time in the prior art, and is beneficial to realizing high refreshing frequency and high resolution.
The embodiment of the invention also provides a driving method of the display panel, and the driving method is suitable for the display panel provided by any embodiment of the invention. Fig. 18 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention. See fig. 18. The driving method of the display panel comprises the following steps:
s110, determining the lighting number of the sub light emitting devices located in the light emitting device and the brightness of each lighted sub light emitting device according to the brightness of the light emitting device.
Wherein the light-emitting luminances of at least two sub light-emitting devices located in the same light-emitting device are constant and the light-emitting luminances are the same or different. The different brightness is beneficial to realizing richer display gray scales, so that the display effect is promoted.
Optionally, the light emitting device includes nine sub-light emitting devices, and the ratio of the light emitting brightness of the nine sub-light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128: 256. namely, the weights of the light emitting luminances of the nine sub-light emitting devices are 1, 2, 4, 8, 16, 32, 64, 128, and 256, respectively. Dividing the light emitting device into nine sub-light emitting devices can realize gray scales of 0 to 511 for 512 gray scales. Or, the light emitting device comprises eight sub-light emitting devices, and the ratio of the light emitting brightness of the eight sub-light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128. i.e., the weights of the light emitting luminances of the eight sub-light emitting devices are 1, 2, 4, 8, 16, 32, 64, and 128, respectively. The sub-light emitting devices are lighted up in a permutation and combination mode, and 0-255 gray scales can be realized, and 256 gray scales are realized.
And S120, driving the sub light-emitting devices in the light-emitting device to independently emit light.
Wherein, it is the drive current that the sub-pixel circuit produces that drives the sub-luminescent device to give out light, through setting up each sub-luminescent device to correspond to a sub-pixel circuit. The driving signal for controlling the sub-pixel circuit to generate the driving current may be determined according to a circuit structure of the display panel. The specific driving manner is described in the foregoing embodiments, and is not described herein again.
The embodiment of the invention controls each sub-light-emitting device to independently emit light, can enable zero lighting, any one lighting, any two lighting, any multiple lighting or all lighting in each sub-light-emitting device to realize the arrangement and combination of the sub-light-emitting devices, and further realizes the brightness adjustment of the light-emitting devices. The embodiment of the present invention is equivalent to replacing the sub-field in the conventional digital driving with the light emitting area of the light emitting device. And, in the embodiment of the present invention, the sub-light emitting devices in one light emitting device can perform writing/storing of data all at one scanning without dividing a plurality of subfields to perform writing/storing of data, respectively. Compared with the prior art, the embodiment of the invention increases the row writing time, is beneficial to avoiding the problem of insufficient scanning time in the prior art, and is beneficial to realizing high refreshing frequency and high resolution.
The embodiment of the invention also provides a display device, which can be a mobile phone, a computer, a tablet personal computer, a television, a wearable device or an electronic billboard and the like. The display device comprises the display panel provided by any embodiment of the invention, the technical principle and the generated technical effect are similar, and the description is omitted here.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
a plurality of light emitting devices including at least two sub light emitting devices that independently emit light; the number of sub-light emitting devices within the same light emitting device to be lit and the luminance of each sub-light emitting device to be lit determine the luminance of the light emitting device.
2. The display panel according to claim 1, wherein at least two of the sub-light emitting devices located in the same light emitting device have constant light emission luminance and different light emission luminance;
preferably, the light emitting brightness of at least two sub-light emitting devices in the same light emitting device is increased in an equal proportion;
preferably, the light emitting device includes eight of the sub light emitting devices, and a ratio of light emitting luminance of the eight sub light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128;
or, the light emitting device comprises nine sub-light emitting devices, and the ratio of the light emitting brightness of the nine sub-light emitting devices is 1: 2: 4: 8: 16: 32: 64: 128: 256.
3. the display panel according to claim 2, wherein the at least two sub light emitting devices have the same size and different display gray scales;
or, the at least two sub-light emitting devices have different sizes and the same display gray scale.
4. The display panel according to claim 1, further comprising a plurality of pixel circuits, the pixel circuits corresponding to the light emitting devices one to one; the pixel circuit comprises at least two sub-pixel circuits, the at least two sub-pixel circuits correspond to the at least two sub-light emitting devices one by one, and the sub-pixel circuits are used for providing driving currents for the corresponding sub-light emitting devices;
preferably, the display panel further includes a plurality of scanning signal lines, at least two of the sub-pixel circuits in one of the pixel circuits being connected to the same scanning signal line;
preferably, the sub-pixel circuits in one of the pixel circuits are all connected to the same scanning signal line.
5. The display panel according to claim 4, further comprising:
a plurality of data voltage signal lines and a plurality of data signal lines; the data voltage signal line is used for providing data voltages for the sub-pixel circuits;
a voltage control circuit including at least two switch units, the at least two switch units corresponding to the at least two sub-pixel circuits one to one, and the at least two switch units corresponding to the at least two data voltage signal lines one to one; the switch unit comprises a control end, and the control end of the switch unit is connected with the corresponding data signal line; the switch unit is used for responding to the data signal on the data signal line to control whether the corresponding sub-light-emitting device is lightened;
preferably, the switching units are connected in series in the data writing paths of the corresponding sub-pixel circuits; or, the switch units are connected in series in the driving current paths of the corresponding sub-pixel circuits;
preferably, at least two of the sub-pixel circuits located in the same pixel circuit correspond to the data signal lines one to one; or at least two sub-pixel circuits in the same pixel circuit are arranged in an array, and the sub-pixel circuits in the same row or column correspond to one data signal line;
preferably, the switch unit includes a transistor, a gate of the transistor is used as a control terminal of the switch unit, a first pole of the transistor is used as a voltage input terminal of the switch unit, and a second pole of the transistor is used as a voltage output terminal of the switch unit.
6. The display panel according to claim 5, further comprising:
the scanning driving circuit is connected with the scanning signal input end of the sub-pixel circuit; the scanning driving circuit is used for generating analog scanning signals output line by line according to the digital scanning signals and transmitting the analog scanning signals to the sub-pixel circuit through scanning signal lines;
the data driving circuit is connected with the control end of the switch unit; the data driving circuit is used for generating an analog data signal according to the digital data signal;
preferably, the display panel further includes:
the time sequence controller comprises a digital scanning output end and a data time sequence output end, and is used for generating the digital scanning signal and outputting the digital scanning signal through the digital scanning output end; the data processing device is used for generating a data processing time sequence signal and outputting the data processing time sequence signal through the data time sequence output end;
the data processor comprises an image data stream input end, a data time sequence input end and a digital data output end, wherein the image data stream input end is connected with an image data stream, the data time sequence input end is connected with the data time sequence output end, and the digital data output end is connected with the data driving circuit; the data processor is configured to process the image data stream and generate the digital data signal.
7. The display panel according to claim 4, further comprising:
a plurality of data signal lines for supplying data voltages to the sub-pixel circuits; at least two sub-pixel circuits in the same pixel circuit are respectively connected with different data voltages;
preferably, at least two of the sub-pixel circuits located in the same pixel circuit are connected to the data signal lines in a one-to-one correspondence; or at least two sub-pixel circuits in the same pixel circuit are arranged in an array, and the sub-pixel circuits in the same row or column are connected with one data signal line;
preferably, the display panel further includes:
the scanning driving circuit is connected with the scanning signal input end of the sub-pixel circuit; the scanning driving circuit is used for generating analog scanning signals output line by line according to the digital scanning signals and transmitting the analog scanning signals to the sub-pixel circuit through scanning lines;
the data driving circuit is connected with the data signal input end of the sub-pixel circuit; the data driving circuit is used for generating the data voltage according to a digital data signal and transmitting the data voltage to the sub-pixel circuit through the data signal line.
8. The display panel according to any one of claims 1 to 7, wherein the outer contour shape of the light-emitting device comprises at least one of a rectangle, a diamond, a triangle, a trapezoid, a circle, or an ellipse.
9. A display device, comprising: the display panel of any one of claims 1-8.
10. A driving method of a display panel, wherein the display panel includes a plurality of light emitting devices including at least two sub-light emitting devices; the driving method of the display panel includes:
determining the lighting number of the sub-light emitting devices positioned in the light emitting device and the brightness of each lighted sub-light emitting device according to the brightness of the light emitting device;
driving the sub light emitting devices within the light emitting device to independently emit light.
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