CN108257544B - Special-shaped display panel, driving method thereof and special-shaped display device - Google Patents
Special-shaped display panel, driving method thereof and special-shaped display device Download PDFInfo
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Abstract
The embodiment of the invention provides a special-shaped display panel, a driving method thereof and a special-shaped display device, relates to the technical field of display and aims to improve the phenomenon of picture split screen. The driving method comprises the following steps: in a first driving period, the first grid lines transmit scanning signals in a time-sharing mode, and when each first grid line transmits the scanning signals, the first grid lines transmit corresponding first data signals to the first high-brightness sub-pixels corresponding to the first grid lines; in a second driving time interval, the second grid lines transmit scanning signals in a time-sharing mode, and when each second grid line transmits the scanning signals, the second grid lines transmit corresponding second data signals to second high-brightness sub-pixels corresponding to the second grid lines; when the special-shaped display panel displays a picture, the actual gray-scale value of at least one first highlight sub-pixel is the same as the actual gray-scale value of one second highlight sub-pixel, and the intensity of a first data signal of the first highlight sub-pixel is smaller than that of a second data signal of the second highlight sub-pixel. The method is used for driving the special-shaped display panel to display the picture.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a special-shaped display panel, a driving method thereof and a special-shaped display device.
[ background of the invention ]
In a conventional display device, the display panel has a rectangular structure. However, with the continuous development of display technology and the diversified demands of users for the appearance of display devices, the irregular display panels are increasingly widely used.
The special-shaped display panel comprises a main display area and a special-shaped display area, and the main display area and the special-shaped display area are different in shape, so that the lengths of grid lines arranged in the main display area and grid lines arranged in the special-shaped display area are different, the charging degree of sub pixels in the main display area and the special-shaped display area is different, the image displayed by the special-shaped display panel is split, and the display effect is influenced.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a special-shaped display panel, a driving method thereof, and a special-shaped display device, so as to improve the split-screen phenomenon of a picture displayed by the special-shaped display panel.
On one hand, the embodiment of the invention provides a driving method of a special-shaped display panel, which is applied to the special-shaped display panel;
the display area of the special-shaped display panel is provided with a plurality of data lines extending along the column direction, the display area comprises a main display area and a special-shaped display area protruding from the main display area, the special-shaped display area is provided with a plurality of first grid lines extending along the row direction, and the main display area is provided with a plurality of second grid lines extending along the row direction; the length of the first grid line is less than that of the second grid line, part of the first grid line and the data line are crossed and insulated to define a plurality of first highlight sub-pixels, and part of the second grid line and the data line are crossed and insulated to define a plurality of second highlight sub-pixels;
the one-frame display period of the special-shaped display panel comprises a first driving time interval and a second driving time interval;
the driving method of the special-shaped display panel comprises the following steps:
in the first driving period, a plurality of first grid lines transmit scanning signals in a time sharing mode, and when each first grid line transmits a scanning signal, the data lines transmit respective corresponding first data signals to the first high-brightness sub-pixels corresponding to the first grid line;
in the second driving period, a plurality of second gate lines transmit scanning signals in a time-sharing manner, and when each second gate line transmits a scanning signal, the data lines transmit respective second data signals to the second high-brightness sub-pixels corresponding to the second gate line;
when the special-shaped display panel displays a picture, the actual gray-scale value of at least one first highlight sub-pixel in the special-shaped display area is the same as the actual gray-scale value of one second highlight sub-pixel in the main display area, and the intensity of the first data signal corresponding to the first highlight sub-pixel is smaller than the intensity of the second data signal corresponding to the second highlight sub-pixel.
In another aspect, an embodiment of the present invention provides a special-shaped display panel, where the special-shaped display panel is driven by the above-mentioned driving method for a special-shaped display panel.
In another aspect, an embodiment of the present invention provides an irregular display device, which includes the above irregular display panel.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects that:
although the intensity difference between the data signal finally received by the first highlight sub-pixel and the first data signal is smaller than the intensity difference between the data signal finally received by the second highlight sub-pixel and the second data signal, in the invention, because the intensity of the provided first data signal is smaller than the intensity of the second data signal, the intensity of the data signal finally received by the first highlight sub-pixel and the intensity of the data signal finally received by the second highlight sub-pixel can still be equal, namely, the actual gray-scale value of the first highlight sub-pixel is the same as the actual gray-scale value of one second highlight sub-pixel in the main display area. Compared with the prior art, the technical scheme provided by the embodiment of the invention can reduce the brightness of the picture displayed in the special-shaped display area to a certain extent, so that the brightness of the picture displayed in the special-shaped display area and the brightness of the picture displayed in the main display area tend to be the same, and the phenomenon of split screen of the picture is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art display panel with a special shape;
FIG. 2 is a schematic waveform diagram of scanning signals corresponding to gate lines in a main display region and a special-shaped display region in the prior art;
fig. 3 is a schematic structural diagram of a special-shaped display panel according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for driving a special-shaped display panel according to an embodiment of the present invention;
FIG. 5 is another flow chart of a method for driving a special-shaped display panel according to an embodiment of the present invention;
FIG. 6 is a timing diagram of signals corresponding to FIG. 3;
FIG. 7 is a schematic structural diagram of a special-shaped display panel according to an embodiment of the present invention;
FIG. 8 is an enlarged partial schematic view of FIG. 7;
FIG. 9 is a timing diagram of signals corresponding to FIG. 7;
FIG. 10 is a schematic diagram of the polarity of the first data signal and the second data signal;
FIG. 11 is a schematic structural diagram of a special-shaped display panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an irregular display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that although the terms first and second may be used to describe the gate lines in the embodiments of the present invention, the gate lines should not be limited to these terms. These terms are only used to distinguish the gate lines from each other. For example, a first gate line may also be referred to as a second gate line, and similarly, a second gate line may also be referred to as a first gate line, without departing from the scope of embodiments of the present invention.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a special-shaped display panel in the prior art, a plurality of Gate lines Gate ' and a plurality of Data lines Data ' are arranged in a display region of the special-shaped display panel, and the Gate lines Gate ' and the Data lines Data ' are crossed and insulated to define a plurality of sub-pixels 1 '. Wherein the display region includes a main display region 2 'and a special-shaped display region 3', and a length L1 of the special-shaped display region 3 'in the row direction is smaller than a length L2 of the main display region 2' in the row direction, so that a length of the Gate lines Gate 'provided in the special-shaped display region 3' is smaller than a length of the Gate lines Gate 'provided in the main display region 2'.
First, as shown in fig. 2, fig. 2 is a schematic waveform diagram of scanning signals corresponding to Gate lines in a main display area and an irregular display area in the prior art, theoretically, the waveform of the scanning signal transmitted by the Gate line Gate 'should be as shown by a curve m1 in fig. 2, but due to the influence of the trace load, the waveform of the scanning signal transmitted by the Gate line Gate' in practical application is as shown by curves m2 and m3 in fig. 2.
Specifically, taking a certain Gate line Gate ' in the special-shaped display area 3' as an example, since the length of the Gate line Gate ' is smaller than that of the Gate line Gate ' in the main display area 2', the Gate line Gate ' has a smaller routing resistance R1, and a smaller coupling capacitance C1 exists between the Gate line Gate ' and the routing lines of the Gate line Gate ' adjacent to the Gate line Gate ', the Data line Data ' overlapped with the Gate line Gate ', and the like. According to formula GloadThe trace load G of the Gate line Gate' can be known as R × CloadIs smaller than the trace load of the Gate line Gate 'in the main display area 2'. Further, according to the formula τ ═ k × GloadIt is noted that τ is the time constant of charging and discharging corresponding to the Gate line Gate', k is a constant, and τ and G are the time constants of charging and discharging corresponding to the Gate line GateloadIn direct proportion. Therefore, the charging and discharging time constant corresponding to the Gate line Gate 'in the special-shaped display area 3' is smaller than the charging and discharging time constant corresponding to the Gate line Gate 'in the main display area 2', so that the Gate line Gate in the special-shaped display area 3 'is enabled to be smaller than the charging and discharging time constant corresponding to the Gate line Gate' in the main display area 2The charging slope corresponding to e' is faster.
Because the charging slope corresponding to the Gate line Gate ' in the special-shaped display area 3' is faster, and the charging slope corresponding to the Gate line Gate ' in the main display area 2' is slower, the on time of the Gate line Gate ' in the special-shaped display area 3' is longer than the on time of the Gate line Gate ' in the main display area 2' (the waveform of the scanning signal transmitted by the Gate line Gate ' in the special-shaped display area 3' is shown as a curve m2 in fig. 2, and the waveform of the scanning signal transmitted by the Gate line Gate ' in the main display area 2' is shown as a curve m3 in fig. 2), so that the Data line Data ' charges the sub-pixel 1' in the special-shaped display area 3' more fully, and the luminance of the picture displayed by the special-shaped display area 3' is higher than the luminance of the picture displayed by the main display area 2 '.
In addition, based on the structure of the special-shaped display panel, the length of the Data line Data 'corresponding to the special-shaped display area 3' is greater than the length of the Data line Data 'corresponding to the middle area of the main display area 2', and therefore, the Data line Data 'corresponding to the special-shaped display area 3' has a greater routing load. However, in practical application, the length difference between the Gate line Gate 'in the special-shaped display area 3' and the Gate line Gate 'in the main display area 2' is much larger than the length difference between the Data line Data 'corresponding to the special-shaped display area 3' and the Data line Data 'corresponding to the middle area of the main display area 2', so that the influence of the Gate line Gate 'on the charging of the sub-pixel 1' in the special-shaped display area 3 'is much larger than the influence of the Data line Data' on the charging of the sub-pixel 1 'in the special-shaped display area 3'.
Based on the above factors, the luminance of the picture displayed in the special-shaped display area is higher than that of the picture displayed in the main display area, so that the picture is split.
In order to solve the above problem, an embodiment of the present invention provides a method for driving a special-shaped display panel, where the method for driving a special-shaped display panel is applied to a special-shaped display panel. In order to express the driving method more clearly, the embodiment of the invention first specifically describes the structure of the special-shaped display panel to which the driving method is applied.
As shown in fig. 3, fig. 3 is a schematic structural diagram of the special-shaped display panel according to the embodiment of the present invention, a display area of the special-shaped display panel is provided with a plurality of Data lines Data extending along a column direction, the display area includes a main display area 1 and a special-shaped display area 2 protruding from the main display area 1, the special-shaped display area 2 is provided with a plurality of first Gate lines Gate1 extending along a row direction, and the main display area 1 is provided with a plurality of second Gate lines Gate2 extending along the row direction. The length of the first Gate line Gate1 is less than that of the second Gate line Gate2, a portion of the first Gate line Gate1 and the Data line Data cross and insulate to define a plurality of first highlight sub-pixels 3, and a portion of the second Gate line Gate2 and the Data line Data cross and insulate to define a plurality of second highlight sub-pixels 4.
The first high-brightness sub-pixel 3 and the second high-brightness sub-pixel 4 refer to sub-pixels with high light transmittance, and may be specifically a white sub-pixel or a yellow sub-pixel.
Based on the structure of the special-shaped display panel, a frame display period of the special-shaped display panel includes a first driving period and a second driving period, as shown in fig. 4, fig. 4 is a flowchart of a driving method of the special-shaped display panel provided in the embodiment of the present invention, and the driving method may specifically include:
step S1: in the first driving period, the plurality of first Gate lines Gate1 transmit scan signals at a time division, and when each first Gate line Gate1 transmits a scan signal, the Data lines Data transmit their respective first Data signals to the first highlight sub-pixels 3 corresponding to the first Gate lines Gate 1.
Step S2: in the second driving period, the plurality of second Gate lines Gate2 transmit the scan signal at a time division, and when each second Gate line Gate2 transmits the scan signal, the Data line Data transmits its respective second Data signal to the second highlight sub-pixel 4 corresponding to the second Gate line Gate 2.
When the special-shaped display panel displays a picture, the special-shaped display area 2 has at least one first highlight sub-pixel 3 with an actual gray-scale value which is the same as an actual gray-scale value of a second highlight sub-pixel 4 of the main display area 1, and the intensity of a first data signal corresponding to the first highlight sub-pixel 3 is smaller than the intensity of a second data signal corresponding to the second highlight sub-pixel 4.
When the Data line Data transmits the initial Data signal with the voltage value of V1' to both the first highlight sub-pixel 3 in the special-shaped display area 2 and the second highlight sub-pixel 4 in the main display area 1, because the second Gate line Gate2 is longer and is affected by a larger wiring load, the opening time of the second Gate line Gate2 is less than the opening time of the first Gate line Gate1, and further the charging degree of the Data line Data to the second highlight sub-pixel 4 is less than the charging degree of the Data line Data to the first highlight sub-pixel 3, that is, the second highlight sub-pixel 4 is not fully charged by the first highlight sub-pixel 3. Therefore, the voltage value V2 'of the data signal finally received by the second highlight sub-pixel 4 is smaller than the voltage value V3' of the data signal finally received by the first highlight sub-pixel 3, that is, the voltage difference V1'-V2' between the data signal finally received by the second highlight sub-pixel 4 and the initial data signal is larger than the voltage difference V1'-V3' between the data signal finally received by the first highlight sub-pixel 3 and the initial data signal, so that the brightness of the picture displayed by the main display area 1 is lower than that of the picture displayed by the special-shaped display area 2.
In the embodiment of the present invention, by making the voltage value V1 of the first data signal transmitted to at least one first highlight sub-pixel 3 smaller than the voltage value V2 of the second data signal transmitted to one second highlight sub-pixel 4, even if the voltage difference Δ V2 between the finally received data signal of the second highlight sub-pixel 4 and V2 is larger than the voltage difference Δ V1 between the finally received data signal of the first highlight sub-pixel 3 and V1, since V1 is smaller than V2, the finally received data signal of the first highlight sub-pixel 3 and the finally received data signal of the second highlight sub-pixel 4 can still be equal, that is, the actual gray level value of the first highlight sub-pixel 3 is the same as the actual gray level value of one second highlight sub-pixel 4 in the main display area. Therefore, compared with the prior art, by adopting the technical scheme provided by the embodiment of the invention, the brightness of the picture displayed by the special-shaped display area 2 can be reduced to a certain extent, so that the brightness of the picture displayed by the special-shaped display area 2 and the brightness of the picture displayed by the main display area 1 tend to be the same, and the phenomenon of screen splitting of the picture is improved.
In addition, referring to fig. 3 again, a portion of the first Gate lines Gate1 and the Data lines Data cross and insulate to define a plurality of first primary color sub-pixels 5, and a portion of the second Gate lines Gate2 and the Data lines Data cross and insulate to define a plurality of second primary color sub-pixels 6.
It is understood that each color of the picture displayed by the display panel is formed by overlapping several basic colors of light, and the sub-pixels corresponding to the basic colors of light are the first primary color sub-pixel 5 and the second primary color sub-pixel 6. Illustratively, the plurality of first primary color sub-pixels 5 and the plurality of second primary color sub-pixels 6 may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively.
Further, as shown in fig. 5, fig. 5 is another flowchart of a driving method of the special-shaped display panel according to an embodiment of the present invention, and when each of the first Gate lines Gate1 transmits a scan signal, the driving method of the special-shaped display panel further includes: the Data lines Data transmit their respective third Data signals to the first primary color sub-pixels 5 corresponding to the first Gate lines Gate 1.
When each of the second Gate lines Gate2 transmits a scan signal, the method of driving the odd-shaped display panel further includes: the Data lines Data transmit their respective corresponding fourth Data signals to the second primary color sub-pixels 6 corresponding to the second Gate lines Gate 2.
Wherein the intensity of the third data signal is equal to the intensity of the fourth data signal.
By making the intensity of the third data signal equal to the intensity of the fourth data signal, it can be seen that in the driving method provided in the embodiment of the present invention, the brightness of the picture displayed in the special-shaped display area 2 can be reduced only by adjusting the intensity of the first data signal, without adjusting the intensity of the third data signal of the first primary color sub-pixel 5. Therefore, on the premise of reducing the brightness of the picture displayed in the special-shaped display area 2, the normal light emission of the first primary color sub-pixel 5 can be ensured, and the color of the picture displayed in the special-shaped display area 2 cannot be influenced.
It should be noted that, taking the first high-brightness sub-pixel 3 as a white sub-pixel and the plurality of first primary color sub-pixels including a red sub-pixel, a green sub-pixel and a blue sub-pixel as an example, in a pixel composed of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, since the light transmittance of the white sub-pixel is high, more white light will be emitted from the pixel, which further affects the color saturation. Based on the driving method provided by the embodiment of the present invention, the first data signal with lower intensity is transmitted to the first high-brightness sub-pixel 3, so that the influence of white light on the color saturation can be reduced while the light-emitting brightness is reduced, thereby improving the display quality.
Further, through research by the inventor, it is found that, under certain process conditions, for the first and second high- luminance sub-pixels 3 and 4 having the same actual gray scale value, the gray scale value corresponding to the first data signal provided to the first high-luminance sub-pixel 3 is lower than the gray scale value corresponding to the second data signal provided to the second high-luminance sub-pixel 4 by about one gray scale value, so that the split-screen phenomenon can be effectively improved.
As shown in table 1, for example, when the data signals corresponding to the gray scale value of 190 are provided to both the first highlight sub-pixel 3 and the second highlight sub-pixel 4, the image displayed by the special-shaped display panel is in a state of being bright at the top and dark at the bottom, and the split screen phenomenon occurs. Based on the driving method provided by the present invention, when the first data signal corresponding to the gray level value of 189 is transmitted to the first high-brightness sub-pixel 3, that is, the intensity of the first data signal is reduced, the upper and lower brightness of the image displayed by the special-shaped display panel is equivalent, and the split screen phenomenon does not occur.
Since a gray level usually corresponds to a voltage value of 5mV, the voltage value of the first data signal provided to the first highlight sub-pixel 3 is lower than the voltage value of the second data signal provided to the second highlight sub-pixel 4 by about 5mV, which can effectively improve the split screen phenomenon.
TABLE 1
Further, based on the perception degree of human eyes to the brightness, when the images displayed in the main display area 1 and the special-shaped display area 2 are bright, the brightness difference perceived by the human eyes is not obvious, and when the brightness of the images displayed in the main display area 1 and the special-shaped display area 2 is dark, the brightness difference perceived by the human eyes is obvious.
The inventor has conducted a lot of experiments, optionally, in the 0-255 gray scale values, the gray scale values can be divided into three ranges, and in the 0-60 gray scale values, since the brightness of the picture corresponding to the gray scale values in the range is dark, and the human eye can perceive the brightness difference more obviously, the first data signal can be reduced by more than one voltage value Δ V1 corresponding to the gray scale value compared to the second data signal. In the gray scale values within the range of 61-200, the first data signal can be decreased by a voltage value Δ V2 corresponding to the gray scale value compared with the second data signal, wherein Δ V2 < Δ V1. In the gray scale values within the range of 201-255, since the luminance of the frame corresponding to the gray scale value within the range is brighter and the human eye does not perceive the luminance difference clearly, the voltage value Δ V3 corresponding to less than one gray scale value can be reduced for the first data signal compared with the second data signal, wherein Δ V3 < Δ V2. In this range, in order to avoid the degree of adjustment of the first data signal being too small, the voltage value of the first data signal lower than that of the second data signal may be made to correspond to a minimum of 0.25 gray scale value.
It should be noted that, the division of the grayscale values of 0 to 255 into three ranges is only a schematic illustration, in practical applications, the grayscale values can also be divided into grayscale ranges of more levels according to the brightness corresponding to different grayscale values, and in each grayscale range, the voltage value reduced by the first data signal can be specifically limited according to the actual situation.
Based on the above research, for the first and second high- brightness sub-pixels 3 and 4 with the same actual gray scale value, the voltage value of the first data signal corresponding to the first high-brightness sub-pixel 3 is V1The voltage value of the second data signal corresponding to the second highlight sub-pixel 4 is V2Can make 0 < V2-V1≤15mv。
Let V2-V1When the intensity of the first data signal is higher than the intensity of the second data signal, the intensity of the first data signal can be ensured to be lower than the intensity of the second data signal, so that the actual gray-scale value of the first highlight sub-pixel 3 is equal to the actual gray-scale value of the second highlight sub-pixel 4, and the brightness of the picture displayed in the special-shaped display area 2 and the brightness of the picture displayed in the main display area 1 tend to be the same. However, V2-V1The numerical value of (A) should not be too large, when V is2-V1If the luminance of the first high-brightness sub-pixel 3 is too large, the actual gray scale value of the first high-brightness sub-pixel is too small, and the luminance of the image displayed in the special-shaped display area 2 is lower than the luminance of the image displayed in the main display area 1. Therefore, to avoid the split screen phenomenon caused by the low brightness of the image displayed in the special-shaped display area 2, V can be further adjusted2-V1Is set to 15 mv.
Optionally, when the special-shaped display panel displays a picture, in order to further reduce the brightness of the picture displayed in the special-shaped display area 2, further ensure that the brightness of the picture displayed in the special-shaped display area 2 is the same as that of the picture displayed in the main display area 1, and effectively improve the split-screen phenomenon, the intensity of the first data signal corresponding to each first highlight sub-pixel in the special-shaped display area 2 may be smaller than the intensity of the second data signal corresponding to each second highlight sub-pixel.
The following specifically describes the driving method of the special-shaped display panel provided by the embodiment of the present invention, taking the structures of two special-shaped display panels as examples:
optionally, referring to fig. 3 again, the special-shaped display area 2 includes at least two first special-shaped display areas 21 arranged along the row direction, and each first special-shaped display area 21 is rectangular in shape, that is, the lengths of the first Gate lines Gate1 in each first special-shaped display area 21 are equal.
When the lengths of the first Gate lines Gate1 in each first irregular display area 21 are equal, the trace resistances of the portion of the first Gate lines Gate1 are equal, and the time for the scan signal to travel on the portion of the first Gate lines Gate1 is also equal, so that the influence of the portion of the first Gate lines Gate1 on the writing of the first data signal is the same.
Therefore, the voltage values of the first data signals corresponding to each first highlight sub-pixel 3 in the special-shaped display area 2 can be made equal, and the voltage values of the second data signals corresponding to each second highlight sub-pixel 4 in the main display area 1 can be made equal, so that the light-emitting brightness of each first highlight sub-pixel 3 in the first special-shaped display area 21 can be adjusted to the same degree, and the uniform adjustment of the picture displayed in each area of the first special-shaped display area 21 can be realized.
Taking the strength of the third data signal provided to the first primary color sub-pixel 5 and the strength of the fourth data signal provided to the second primary color sub-pixel 6 as an example, with reference to fig. 3 and 6, fig. 6 is a signal timing diagram corresponding to fig. 3, and a driving method corresponding to the special-shaped display panel is specifically described below:
it is assumed that the odd-shaped display panel includes N first Gate lines Gate1 and M second Gate lines Gate 2. One frame display period includes a first driving period T1And a second driving period T2Wherein the first driving period includes N display sub-periods, and the second driving period includes M display sub-periods.
In the first drive period T 11 st display sub-period t11Meanwhile, the 1 st first Gate line Gate1 transmits a scan signal (for convenience of understanding, the scan signals transmitted by the 1 st first Gate line Gate1 to the nth first Gate line Gate1 are respectively represented as gates in fig. 611～Gate1N) The Data line Data is transmitted to the first highlight sub-pixel 3 corresponding to the 1 st first Gate line Gate1 by the transmission amount Vdata1Is transmitted to the first primary color sub-pixel 5 corresponding to the 1 st first Gate line Gate1, the first Data signal (in fig. 6, the first Data signal transmitted to the first highlight sub-pixel 3 is denoted as Data1), and the first primary color sub-pixel 5 is transmitted with the size Vdata3Is transmitted to the first primary color sub-pixel 5 (the third Data signal transmitted to the first primary color sub-pixel 5 is represented in fig. 6 as Data 3).
In the first drive period T1The 2 nd display sub-period t12The 2 nd first Gate line Gate1 transmits a scan signal, and the Data line Data transmits a scan signal having a magnitude of V to the first highlight sub-pixel 3 corresponding to the 2 nd first Gate line Gate1data1First data message ofNo. to the first primary color sub-pixel 5 corresponding to the 2 nd first Gate line Gate1 with the size Vdata3The third data signal of (1).
And so on.
In the first drive period T1Is displayed for the nth display sub-period t1NThe nth first Gate line Gate1 transmits a scan signal, and the Data line Data transmits a scan signal having a magnitude of V to the first highlight sub-pixel 3 corresponding to the nth first Gate line Gate1data1To the first primary color sub-pixel 5 corresponding to the nth first Gate line Gate1, by a magnitude Vdata3The third data signal of (1).
In the second drive period T 21 st display sub-period t21The 1 st second Gate line Gate2 transmits scan signals (for convenience of understanding, the scan signals transmitted by the 1 st second Gate line Gate2 to the mth first Gate line Gate1 are respectively represented as Gate21 to Gate2M in fig. 6), and the Data lines Data all transmit the scan signals with the size of V to the second highlight sub-pixels 4 corresponding to the 1 st second Gate line Gate2data2Is generated (the second Data signal transferred to the second primary color sub-pixel 6 is represented in fig. 6 as Data2), where V isdata2＞Vdata1And the sub-pixels 6 with the primary color V are transmitted to the sub-pixels 6 with the primary color V corresponding to the 1 st second grid line Gate2data4Is detected (the second Data signal transferred to the second highlight sub-pixel 6 is represented as Data4 in fig. 6), where Vdata4＝Vdata3。
In the second drive period T2The 2 nd display sub-period t22The 2 nd second Gate line Gate2 transmits a scan signal, and the Data line Data transmits a scan signal having a magnitude of V to the second highlight sub-pixel 4 corresponding to the 2 nd second Gate line Gate2data2To the second primary color sub-pixels 6 corresponding to the 2 nd second Gate line Gate2, respectivelydata4The fourth data signal of (1).
And so on.
In the second drive period T2The Mth display sub-period t2MThe mth second Gate line Gate2 transmits the scan signal, and the Data line Data goes to the second high corresponding to the mth second Gate line Gate2The bright sub-pixels 4 each have a transmission size Vdata2To the second primary color sub-pixels 6 corresponding to the 2 nd second Gate line Gate2, respectivelydata4Of the first data signal.
Alternatively, as shown in fig. 7, fig. 7 is another schematic structural diagram of the special-shaped display panel according to the embodiment of the invention, the special-shaped display area 2 includes at least two second special-shaped display areas 22 arranged along the row direction, a part of the edge of each second special-shaped display area 22 is an arc-shaped edge, and in each second special-shaped display area 22, the length of the first Gate line Gate1 is gradually increased along the column direction.
When the length of the first Gate line Gate1 in each second irregular display area 22 gradually increases, the trace resistance of the first Gate line Gate1 gradually increases, the time for the scan signal to travel on this portion of the first Gate line Gate1 gradually increases, and therefore, the influence of this portion of the first Gate line Gate1 on the writing of the first data signal also gradually increases.
Therefore, in order to eliminate the brightness difference between each region in the first special-shaped display region 21 and the displayed picture in the main display region 1, the brightness of the first highlight sub-pixel 3 in the second special-shaped display region 22 can be adjusted to different degrees.
Specifically, as shown in fig. 8, fig. 8 is a partially enlarged schematic view of fig. 7, each of the second irregular display areas 22 includes N second sub-irregular display areas 221 arranged in the column direction, where N is a positive integer greater than 1.
The length of the first Gate lines Gate1 in the ith second sub-specially shaped display region 221 is less than the length of the first Gate lines Gate1 in the (i + 1) th second sub-specially shaped display region 221. Taking fig. 8 as an example, the i-th second sub-irregular display area 221 refers to the second sub-irregular display area 221 located above the i + 1-th second sub-irregular display area 221.
The voltage values of the second Data signals transmitted by the Data lines Data to each of the second highlight sub-pixels 4 in the main display area 1 can be made equal, and in the ith second sub-irregular display area 221, the voltage difference between the first Data signal and the second Data signal of each of the first highlight sub-pixels 3 is Δ ViIn the first placein the i +1 second sub-special-shaped display areas 221, the voltage difference between the first data signal and the second data signal of each first highlight sub-pixel 3 is Δ Vi+1，ΔVi＞ΔVi+1，i＝1～N-1。
With the above driving method, for the second sub-irregular display region 221 far from the main display region 1, since the length of the first Gate line Gate1 is shorter than that of the first Gate line Gate1 in the other second sub-irregular display region 221, the influence of the part of the first Gate line Gate1 on the writing of the first data signal is smaller, the difference between the luminance of the picture displayed by the second sub-irregular display region 221 and the luminance of the picture displayed by the main display region 1 is more obvious, and by applying the smaller first data signal to the first highlight sub-pixel 3 in the second sub-irregular display region 221, the first data signal and the second data signal have a larger voltage difference, so that the luminance of the first highlight sub-pixel 3 in the second sub-irregular display region 221 is reduced to a greater extent. For the second sub-irregular display area 221 close to the main display area 1, since the length of the first Gate line Gate1 is longer than that of the first Gate line Gate1 in the other second sub-irregular display areas 221, the influence of the part of the first Gate line Gate1 on the writing of the first data signal is larger, the difference between the luminance of the picture displayed by the second sub-irregular display area 221 and the luminance of the picture displayed by the main display area 1 is smaller, and by applying the larger first data signal to the first highlight sub-pixel 3 in the second sub-irregular display area 221, the voltage difference between the first data signal and the second data signal is smaller, so that the luminance of the first highlight sub-pixel 3 in the second sub-irregular display area 221 is reduced to a smaller extent. In this way, the brightness of the picture displayed by each area in the second irregular display area 22 and the brightness of the picture displayed by the main display area 1 can be made to be approximately the same.
Taking the following example that the intensity of the third data signal provided to the first primary color sub-pixel 5 is equal to the intensity of the fourth data signal provided to the second primary color sub-pixel 6, with reference to fig. 7 and 9, fig. 9 is a timing diagram corresponding to fig. 7, and a driving method corresponding to the special-shaped display panel is specifically described:
it is assumed that the special-shaped display panel includes k × H first Gate lines Gate1 and M second Gate lines Gate2, each of the second special-shaped display regions 22 includes H second sub-special-shaped display regions 221, and k first Gate lines Gate1 are provided in each of the second sub-special-shaped display regions 221. One frame display period includes a first driving period T1' and a second driving period T2', wherein the first driving period includes H display periods.
In the first drive period T1' the 1 st display period t1In this embodiment, the 1 st to k-th first Gate lines Gate1 to Gate1 transmit scan signals (not shown in fig. 9) in a time-sharing manner, and when each first Gate line Gate1 transmits a scan signal, the Data line Data transmits a scan signal having a magnitude V to the corresponding first highlight sub-pixel 3data11'the first Data signal (in fig. 9, the first Data signal transmitted to the first highlight sub-pixel 3 is represented as Data1'), and the Data line Data is transmitted to the first primary color sub-pixel 5 corresponding thereto with a size Vdata3'of the first primary color sub-pixel 5 (the third Data signal transferred to the first primary color sub-pixel 5 is represented in fig. 9 as Data 3').
In the first drive period T1' the 2 nd display period t2', the k +1 th first Gate line Gate1 to the 2k nd first Gate line Gate1 transmit the scanning signal in a time-sharing manner, and when each first Gate line Gate1 transmits the scanning signal, the Data line Data transmits the scanning signal to the corresponding first highlight sub-pixel 3 with the size of Vdata12' wherein Vdata12'＞Vdata11'; the Data line Data transmits a size V to the corresponding first primary color sub-pixel 5data3' of the second data signal.
In the first drive period T1' the 3 rd display period t3', the 2k +1 th first Gate line Gate1 to the 3k rd first Gate line Gate1 transmit the scan signal in time division, and when each first Gate line Gate1 transmits the scan signal, the Data line Data transmits the scan signal to the corresponding first highlight sub-pixel 3 with the magnitude of Vdata13' wherein Vdata13'＞Vdata12'; the Data line Data transmits a size V to the corresponding first primary color sub-pixel 5data3' of the third dataA signal.
And so on.
In the first drive period T1H th display period t ofH', (H-1) th (k + 1) th first Gate line Gate1 to the hkth first Gate line Gate1 transmit scan signals in a time-sharing manner, and when each first Gate line Gate1 transmits a scan signal, the Data line Data transmits a scan signal having a magnitude of V to the corresponding first highlight sub-pixel 3data1H' the first data signal, Vdata1H'＞Vdata1(H-1)'; the Data line Data transmits a size V to the corresponding first primary color sub-pixel 5data3' of the second data signal.
In the second drive period T2', the 1 st second Gate line Gate2 to the mth second Gate line Gate2 transmit the scan signal (not shown in fig. 9) in a time-sharing manner, and when each second Gate line Gate2 transmits the scan signal, the Data line Data transmits the scan signal to the corresponding second highlight sub-pixel 4 with the magnitude Vdata2'of (for the sake of easy understanding, the second Data signal transferred to the second highlight sub-pixel 4 is represented as Data2' in fig. 9), where Vdata2'-Vdata11'＞Vdata2'-Vdata12'＞…＞Vdata2'-Vdata1H'; the Data line Data transmits a size V to the corresponding secondary color sub-pixel 6data4'of (for ease of understanding, the fourth Data signal transferred to the second primary color sub-pixel 6 is represented as Data4' in fig. 9), where Vdata4'＝Vdata3'。
In addition, in the structure of the irregular shaped display panel as shown in fig. 7 and 8, the number of the first Gate lines Gate1 included in each of the second sub irregular shaped display regions 221 may be determined by the area of the second irregular shaped region 22, and the number of the first Gate lines Gate1 included in each of the second sub irregular shaped display regions 221 may be equal or different. When the area of the second irregular area 22 is larger, the second irregular area can be divided into more second sub-irregular display areas 221, so that the number of brightness changes is increased, and the brightness difference between two adjacent second sub-irregular display areas 221 is reduced.
Furthermore, any two adjacent second sub-special-shaped display areas can be controlledThe difference between the corresponding voltage differences of the domains 221 is equal. Take the driving method corresponding to FIG. 9 as an example, that is, (V)data2'-Vdata11')-(Vdata2'-Vdata12')＝(Vdata2'-Vdata12')-(Vdata2'-Vdata13')＝……＝(Vdata2'-Vdata1(H-1)')-(Vdata2'-Vdata1H'). By adopting the arrangement, the brightness of the pictures displayed by the plurality of second sub-special-shaped display areas 221 can be uniformly changed, the perception of human eyes on the brightness change is reduced, and the display quality is improved.
In addition, the driving method of the special-shaped display panel may further include: in any two adjacent frame display periods, the polarity of the first data signal is opposite, and the polarity of the second data signal is opposite. Exemplarily, taking the driving method corresponding to fig. 3 and fig. 6 as an example, as shown in fig. 10, fig. 10 is a schematic diagram of polarities of the first data signal and the second data signal, in an ith frame display period, the polarities of the first data signal and the second data signal are both a first polarity, and in an (i-1) th frame display period and an (i + 1) th frame display period, the polarities of the first data signal and the second data signal are both a second polarity. In fig. 10, the first polarity is positive, and the second polarity is negative, but it should be understood that the first polarity may be negative, and the second polarity may be positive.
Taking the liquid crystal display panel as an example, in any two adjacent frame display periods, the liquid crystal molecules can be turned over along different directions by changing the polarities of the first data signal and the second data signal, so that the damage of the liquid crystal molecules caused by overlong turning time of the liquid crystal molecules along the same direction is avoided.
Referring to fig. 3 and fig. 7 again, an embodiment of the invention further provides a special-shaped display panel, and the display panel is driven by the above-mentioned driving method. The specific structure and driving method of the special-shaped display panel have been described in detail in the above embodiments, and are not described herein again.
Because the special-shaped display panel provided by the embodiment of the invention is driven by the driving method, the special-shaped display panel can reduce the brightness of the picture displayed by the special-shaped display area 2 to a certain extent, so that the brightness of the picture displayed by the special-shaped display area 2 and the brightness of the picture displayed by the main display area 1 tend to be the same, and the phenomenon of screen splitting of the picture is improved.
In addition, it should be noted that the specific structure of the special-shaped display panel shown in fig. 3 and fig. 7 is only schematically illustrated by taking the example that the special-shaped display area 2 is located on the upper side of the main display area 1. However, in the embodiment of the present invention, the special-shaped display area 2 may be provided on both the upper side and the lower side of the main display area 1.
Specifically, as shown in fig. 11, fig. 11 is a schematic structural diagram of the special-shaped display panel according to the embodiment of the present invention, the special-shaped display areas 2 are respectively located on the upper side and the lower side of the main display area 1, and a groove area is formed between the main display area 1 and the special-shaped display area 2 located on the same side. Optionally, in order to realize the camera function of the special-shaped display panel, an image capturing element 7, such as a camera, for capturing an image may be disposed in the groove region on the upper side. Optionally, in order to realize the fingerprint identification function of the special-shaped display panel, a fingerprint identification area 8 may be further provided at the groove area of the lower side. The image acquisition element 7 and the fingerprint identification area 8 are respectively arranged at the groove areas of the display area, so that the image acquisition element 7 and the fingerprint identification area 8 can be prevented from occupying the space which is protruded out of the display area, and the frame width of the special-shaped display device is prevented from being increased.
An embodiment of the present invention further provides a display panel special-shaped display device, as shown in fig. 12, fig. 12 is a schematic structural diagram of the special-shaped display device provided in the embodiment of the present invention, and the special-shaped display device includes the special-shaped display panel 100. The specific structure and driving method of the display panel 100 have been described in detail in the above embodiments, and are not described herein again. Of course, the display device shown in fig. 12 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The special-shaped display device provided by the embodiment of the invention comprises the special-shaped display panel, so that the brightness of the picture displayed by the special-shaped display area of the special-shaped display panel and the brightness of the picture displayed by the main display area tend to be the same by adopting the special-shaped display device, and the split screen phenomenon of the display picture is effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A driving method of a special-shaped display panel is characterized in that the driving method of the special-shaped display panel is applied to the special-shaped display panel;
the display area of the special-shaped display panel is provided with a plurality of data lines extending along the column direction, the display area comprises a main display area and a special-shaped display area protruding from the main display area, the special-shaped display area is provided with a plurality of first grid lines extending along the row direction, and the main display area is provided with a plurality of second grid lines extending along the row direction; the length of the first grid line is less than that of the second grid line, part of the first grid line and the data line are crossed and insulated to define a plurality of first highlight sub-pixels, and part of the second grid line and the data line are crossed and insulated to define a plurality of second highlight sub-pixels;
the one-frame display period of the special-shaped display panel comprises a first driving time interval and a second driving time interval;
the driving method of the special-shaped display panel comprises the following steps:
in the first driving period, a plurality of first grid lines transmit scanning signals in a time sharing mode, and when each first grid line transmits a scanning signal, the data lines transmit respective corresponding first data signals to the first high-brightness sub-pixels corresponding to the first grid line;
in the second driving period, a plurality of second gate lines transmit scanning signals in a time-sharing manner, and when each second gate line transmits a scanning signal, the data lines transmit respective second data signals to the second high-brightness sub-pixels corresponding to the second gate line;
when a special-shaped display panel displays a picture, the special-shaped display area at least has the actual gray-scale value of one first highlight sub-pixel which is the same as the actual gray-scale value of one second highlight sub-pixel of the main display area, and the intensity of the first data signal corresponding to the first highlight sub-pixel is smaller than the intensity of the second data signal corresponding to the second highlight sub-pixel;
for a first high-brightness sub-pixel with the same actual gray-scale value as one second high-brightness sub-pixel of the main display area, the voltage value of the first data signal corresponding to the first high-brightness sub-pixel is V1The voltage value of the second data signal corresponding to the second highlight sub-pixel is V2，0＜V2-V1≤15mv。
2. The method of claim 1, wherein a portion of the first gate lines and the data lines cross over and are insulated to define a plurality of first primary color sub-pixels, and a portion of the second gate lines and the data lines cross over and are insulated to define a plurality of second primary color sub-pixels;
when each first gate line transmits a scanning signal, the method for driving the special-shaped display panel further comprises: the data lines transmit respective third data signals to the first primary color sub-pixels corresponding to the first grid lines;
when each second gate line transmits a scanning signal, the method for driving the special-shaped display panel further comprises: the data lines transmit respective fourth data signals to the second primary color sub-pixels corresponding to the second grid lines;
wherein the strength of the third data signal is equal to the strength of the fourth data signal.
3. The method as claimed in claim 1, wherein the intensity of the first data signal corresponding to each of the first highlighted sub-pixels is less than the intensity of the second data signal corresponding to each of the second highlighted sub-pixels when the irregular shaped display panel displays a picture.
4. The method of driving a shaped display panel according to claim 3, wherein the shaped display area comprises at least two first shaped display areas arranged in the row direction, the first gate lines in each of the first shaped display areas being equal in length;
the voltage values of the first data signals corresponding to each first highlight sub-pixel in the special-shaped display area are equal;
and the voltage values of the second data signals corresponding to each second highlight sub-pixel in the main display area are equal.
5. The method of driving a shaped display panel according to claim 3, wherein the shaped display area comprises at least two second shaped display areas arranged in the row direction;
each second special-shaped display area comprises N second sub-special-shaped display areas which are arranged along the column direction, wherein N is a positive integer larger than 1;
the length of the first grid line in the ith second sub special-shaped display area is smaller than that of the first grid line in the (i + 1) th second sub special-shaped display area;
the voltage values of the second data signals transmitted by the data lines to each second highlight sub-pixel in the main display area are equal;
in the ith said second sub-shaped display area, eachThe voltage difference between the first data signal and the second data signal of the first high-brightness sub-pixel is DeltaViIn the (i + 1) th second sub-irregular display area, the voltage difference between the first data signal and the second data signal of each first highlight sub-pixel is Δ Vi+1，ΔVi＞ΔVi+1，i＝1～N-1。
6. The method of claim 5, wherein the difference between the voltage differences corresponding to any two adjacent second sub-shaped display regions is equal.
7. The method of claim 1, further comprising:
in any two adjacent frame display periods, the polarity of the first data signal is opposite, and the polarity of the second data signal is opposite.
8. An irregular display panel, characterized in that the irregular display panel is driven by the method of driving an irregular display panel according to any one of claims 1 to 7.
9. A shaped display device, characterized in that the shaped display device comprises a shaped display panel as claimed in claim 8.
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