Organic light emitting display and driving method thereof

Abstract

The present application discloses an organic light-emitting display and a driving method thereof. The organic light-emitting display includes a display panel and an external compensation circuit. The driving method includes the following steps: simultaneously activating data lines in the display panel and sensing lines in the external compensation circuit, outputting a first driving data signal through the data lines and outputting a second driving data signal through the sensing lines; activating scan lines in a first pixel array row by row, and simultaneously activating scan lines in a second pixel array row by row; and driving pixels in the first pixel array and pixels in the second pixel array respectively using the first driving data signal and the second driving data signal; wherein the first pixel array and the second pixel array are respectively portions of pixels in the display panel. Through the above design, the display refresh rate of the organic light-emitting display can be increased without adjusting the timing frequency.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an organic light emitting display and a driving method thereof. Background Art

[0002] An organic light-emitting display includes a display panel, a source driver circuit, and a gate driver circuit. The display panel has a plurality of pixels formed at the intersection of data lines and scan lines. The source driver circuit supplies data voltages to the data lines, and the gate driver circuit supplies scan signals to the scan lines. Each pixel includes an organic light-emitting diode and a driving transistor. The driving transistor controls the amount of current supplied to the organic light-emitting diode according to the voltage of the gate. However, due to the non-uniformity of the manufacturing process, the threshold voltage of the driving transistor is different for each pixel. In this case, even if the same data voltage is applied to each pixel, the brightness of the organic light-emitting diode is different for each pixel due to the difference in the threshold voltage of the driving transistor between pixels. Currently, an external compensation circuit is often used to increase the electrical signal to correct the electrical differences of the compensation driving transistor, thereby eliminating the brightness differences of the light-emitting diode.

[0003] Currently, in order to increase the display refresh rate of an organic light-emitting display, the organic light-emitting display is usually required to adjust the timing frequency to achieve this goal. However, in an organic light-emitting display with an external compensation circuit, increasing the display refresh rate by adjusting the timing frequency will increase the calculation of the organic light-emitting display and affect the display performance. Summary of the Invention

[0004] The purpose of the present application is to provide an organic light emitting display and a driving method thereof, which can improve the display refresh rate of the organic light emitting display without adjusting the timing frequency.

[0005] The present application discloses a driving method for an organic light-emitting display, wherein the organic light-emitting display includes a display panel and an external compensation circuit. The external compensation circuit is used to compensate for the electrical property differences of driving transistors within pixels in the display panel. The driving method includes the following steps:

[0006] Simultaneously starting the data line in the display panel and the sensing line in the external compensation circuit, outputting a first driving data signal through the data line and outputting a second driving data signal through the sensing line;

[0007] Turning on the scan lines in the first pixel array row by row, and simultaneously turning on the scan lines in the second pixel array row by row; and

[0008] driving pixels in the first pixel array and pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal;

[0009] The first pixel array and the second pixel array are respectively part of the pixels in the display panel.

[0010] Optionally, the first pixel array is an upper half of the display panel, and the second pixel array is a lower half of the display panel.

[0011] Optionally, the step of driving pixels in the first pixel array and pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal includes:

[0012] In the first stage, a first preset row of pixels in the upper half of the display panel is driven by the first driving data signal, and a second preset row of pixels in the lower half of the display panel is driven by the second driving data signal;

[0013] In the second stage, a first preset row of pixels in the upper half of the display panel is driven by the second driving data signal, and a second preset row of pixels in the lower half of the display panel is driven by the first driving data signal;

[0014] The pixels in the first preset row change to the first display state when receiving the first drive data signal, and the pixels in the second preset row change to the second display state when receiving the second drive data signal; the pixels in the first preset row maintain the first display state when receiving the second drive data signal, and the pixels in the second preset row maintain the second display state when receiving the first drive data signal; the first stage and the second stage together form the time required to scan one row of pixels.

[0015] Optionally, the number of rows of the first preset rows of pixels in the upper half of the screen is the same as the number of rows of the second preset rows of pixels in the lower half of the screen.

[0016] Optionally, the step of driving pixels in the first pixel array and pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal includes:

[0017] driving a first row of pixels in an upper half of the display panel using the first driving data signal, and driving other rows of pixels in the upper half of the display panel row by row;

[0018] Simultaneously, driving the first row of pixels in the lower half of the display panel by the second driving data signal, and driving the other rows of pixels in the upper half of the display panel row by row;

[0019] The first driving data signal and the second driving data signal are complete data signals respectively.

[0020] Optionally, the first pixel array is pixels in odd rows in the display panel, and the second pixel array is pixels in even rows in the display panel.

[0021] The present application also discloses an organic light-emitting display, which adopts the driving method of the organic light-emitting display as described above, and the organic light-emitting display includes a display panel, an external compensation circuit, a first source driving circuit, a second source driving circuit and a gate driving circuit. The external compensation circuit is used to compensate for the electrical differences of the driving transistors in the pixels of the display panel, the first source driving circuit is connected to the data lines in the display panel, the second source driving circuit is connected to the sensing lines in the external compensation circuit, and the gate driving circuit is connected to the scan lines in the display panel; wherein, the display panel includes a first pixel array and a second pixel array, while the first source driving circuit provides data signals to the pixels in the first pixel array or the second pixel array through the data lines, the second source driving circuit provides data signals to the pixels in the first pixel array or the second pixel array through the sensing lines; the gate driving circuit simultaneously scans the scan lines in the first pixel array and the second pixel array.

[0022] Optionally, the first pixel array and the second pixel array respectively have multiple pixels, and the pixels include a first transistor, a second transistor, a driving transistor, a data line, a first scan line, a test signal line and a light-emitting unit, and the external compensation circuit includes a sensing line, a reference voltage line, a first switch, a second switch, a switching switch and a compensation calculation unit; the control end of the first transistor is connected to the first scan line, the input end of the first transistor is connected to the data line, the output end of the first transistor is connected to the control end of the driving transistor, the output end of the driving transistor is connected to the light-emitting unit, the control end of the second transistor is connected to the test signal line, the input end of the second transistor is connected to the output end of the driving transistor, the output end of the second transistor is connected to the sensing line, the sensing line is connected to the second source driving circuit through the switching switch, the sensing line is connected to the reference voltage line through the first switch, the sensing line is connected to one end of the compensation calculation unit through the second switch, and the other end of the compensation calculation unit is connected to the first source driving circuit.

[0023] Optionally, the pixel further includes a control switch and a second scan line, the input end of the control switch is connected to the sensing line in the adjacent pixels in the same row, the output end of the control switch is connected to the control end of the driving transistor in the corresponding pixel, and the control end of the control switch is connected to the second scan line; wherein the first scan line and the second scan line in the pixel are scanned row by row in sequence.

[0024] Optionally, the gate driving circuit includes multiple gate driving units, and the nth row of pixels in the first pixel array and the nth row of pixels in the second pixel array are driven by the same gate driving unit; wherein n is a natural number not including 0.

[0025] The beneficial effects of the present application are as follows: without adjusting the timing frequency, the present application utilizes the sensing lines in the external compensation circuit as data lines. In this case, the data lines in the display panel and the sensing lines in the external compensation circuit simultaneously output data signals to pixels in different areas of the display panel, and the pixels in these two areas are scanned simultaneously, which is equivalent to the two display areas starting to emit light at the same time. Compared with the traditional design of scanning from the first row of scan lines to the last row of scan lines, the time taken is shortened, thereby achieving the effect of increasing the display refresh rate and even doubling the frequency. Moreover, because the lines utilized are the sensing lines originally in the external compensation circuit, no additional wiring is required, and thus the aperture ratio of the display panel will not be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0027] Figure 1 This is a circuit diagram of an organic light-emitting display provided in an embodiment of the present application;

[0028] Figure 2 This is a flow chart of a driving method for an organic light-emitting display provided in an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of a display panel provided in one embodiment of the present application;

[0030] Figure 4 is a pixel schematic diagram provided in one embodiment of the present application;

[0031] Figure 5This is a timing diagram of the first stage provided by an embodiment of the present application;

[0032] Figure 6 This is a timing diagram of the second stage provided by one embodiment of the present application;

[0033] Figure 7 This is a flow chart of a driving method of an organic light emitting display provided in one embodiment of the present application;

[0034] Figure 8 is another pixel schematic diagram provided in one embodiment of the present application;

[0035] Figure 9 is a pixel schematic diagram provided in another embodiment of the present application;

[0036] Figure 10 is a flow chart of a driving method of an organic light emitting display provided in another embodiment of the present application;

[0037] Figure 11 Schematic diagram of another organic light emitting display provided in an embodiment of the present application.

[0038] Among them, 10, organic light-emitting display; 100, display panel; 110, pixel; 120, first pixel array; 130, second pixel array; T1, first transistor; T2, second transistor; T3, driving transistor; T4, control switch; data line, data line; scan1, first scan line; scan2, second scan line; C, capacitor; sense, test signal line; OLED, light-emitting unit; 200, external compensation circuit; Vsen, sensing line; Vref, reference voltage line; SW1, first switch; SW2, second switch; SW3, switching switch; 210, compensation calculation unit; 300, first source drive circuit; 400, second source drive circuit; 500, gate drive circuit; 510, gate drive unit. DETAILED DESCRIPTION

[0039] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative. However, the present application can be implemented in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0040] In addition, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense, and may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] like Figure 1 As shown, an embodiment of the present application provides an organic light-emitting display, wherein the organic light-emitting display 10 includes a display panel 100 and an external compensation circuit 200. The display panel 100 adopts an organic electroluminescence display (OLED) type display panel. The display panel 100 includes data lines, scan lines and multiple pixels 110. Taking the traditional 2T1C structure as an example, the pixel 110 includes a first transistor T1, a second transistor T2, a driving transistor T3, a data line data line, a first scan line scan1, a capacitor C, a test signal line sense and a light-emitting unit OLED. The external compensation circuit 200 includes a sensing line Vsen, a reference voltage line Vref, a first switch SW1, a second switch SW2, a switching switch SW3 and a compensation calculation unit 210. The external compensation circuit 200 is used to compensate for the electrical property differences of the driving transistor T3 in the pixel 110 in the display panel 100.

[0042] The control end of the first transistor T1 is connected to the first scan line scan1, the input end of the first transistor T1 is connected to the data line data line, the output end of the first transistor T1 is connected to the control end of the driving transistor T3, the input end of the driving transistor T3 is connected to the high voltage end ELVDD, the output end of the driving transistor T3 is connected to one end of the light-emitting unit OLED, and the other end of the light-emitting unit OLED is connected to the low voltage end ELVSS, one end of the capacitor C is connected to the control end of the driving transistor T3, and the other end of the capacitor C is connected to the output end of the driving transistor T3.

[0043] The control end of the second transistor T2 is connected to the test signal line sense, the input end of the second transistor T2 is connected to the output end of the driving transistor T3, the output end of the second transistor T2 is connected to the sensing line Vsen, the sensing line Vsen is connected to the reference voltage line Vref through the first switch SW1, and the sensing line Vsen is connected to one end of the compensation calculation unit 210 through the second switch SW2.

[0044] The compensation calculation unit 210 is used to calculate a compensation voltage based on the detected threshold voltage of the driving transistor T3 to compensate for the brightness of the pixel 110. The compensation calculation unit 210 specifically includes a digital-to-analog converter (DAC), a memory, a calculation unit, and an analog-to-digital converter (ADC), and the like, which are not described in detail here.

[0045] The organic light-emitting display 10 further includes a first source driving circuit 300, a second source driving circuit 400, and a gate driving circuit 500. The first source driving circuit 300 is connected to the data line data line in the display panel 100 to provide a first data driving signal to the data line data line; the second source driving circuit 400 is connected to the sensing line Vsen in the external compensation circuit 200 to provide a second data driving signal to the sensing line Vsen; and the gate driving circuit 500 is connected to the scan line in the display panel 100 to provide a scan signal to the scan line.

[0046] The second source driver circuit 400 is connected to the sensing line Vsen via the switch SW3 to facilitate control of the state of the sensing line Vsen.

[0047] In the embodiment of the present application, the entire screen display process includes a power-on phase, a display phase, a blank phase, and a power-off phase. Each display phase is the process of displaying a frame of screen, and the blank phase is the interval between two adjacent frames. The detection and compensation operations of the external compensation circuit 200 are only performed during the power-on phase, the blank phase, and / or the power-off phase. That is, the opening of the test signal line sense and the opening of the first switch SW1 and the second switch SW2 are only performed during these non-display phases. The opening of the switching switch SW3 and the introduction of data signals to the data line data line and the sensing line Vsen are performed during the display phase. Therefore, although the embodiment of the present application uses the sensing line Vsen as a circuit for both the compensation phase and the display phase, they do not interfere with each other.

[0048] In the embodiments of this application, reference Figure 1 and Figure 3The display panel 100 includes a first pixel array 120 and a second pixel array 130. The first pixel array 120 and the second pixel array 130 are respectively portions of the pixels 110 in the display panel 100. While the first source driver circuit 300 provides data signals to the pixels 110 in the first pixel array 120 or the second pixel array 130 via the data line data line, the second source driver circuit 400 provides data signals to the pixels 110 in the first pixel array 120 or the second pixel array 130 via the sensing line Vsen. It should be noted that the first source driver circuit 300 and the second source driver circuit 400 provide data signals to pixels in different arrays, respectively. Furthermore, the gate driver circuit 500 simultaneously scans the scan lines in the first pixel array 120 and the second pixel array 130.

[0049] like Figure 2 As shown, correspondingly, the present application also discloses a driving method of the organic light emitting display 10, comprising the steps of:

[0050] S1: Simultaneously starting the data line in the display panel and the sensing line in the external compensation circuit, outputting a first driving data signal through the data line and outputting a second driving data signal through the sensing line;

[0051] S2: turning on the scan lines in the first pixel array row by row, and at the same time turning on the scan lines in the second pixel array row by row;

[0052] S3: driving pixels in the first pixel array and pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal.

[0053] In this embodiment of the present application, without adjusting the timing frequency, the sensing line Vsen in the external compensation circuit 200 serves as the data line. The data line in the display panel 100 and the sensing line Vsen in the external compensation circuit 200 simultaneously output data signals to pixels 110 in different regions (the first pixel array and the second pixel array) of the display panel 100. The pixels 110 in these two regions are scanned simultaneously, which is equivalent to the two display regions (the first pixel array and the second pixel array) starting to emit light simultaneously. This reduces the time taken to scan the scan lines from the first to the last row in a conventional design, thereby increasing the display refresh rate and even doubling the frequency. For example, when the timing frequency is 60 Hz, the display refresh rate is 120 Hz; when the timing frequency is 120 Hz, the display refresh rate is 240 Hz. A relatively low-frequency drive capability can achieve a higher refresh rate, resulting in better display quality. Furthermore, because the wiring utilized is the sensing line Vsen in the external compensation circuit 200, no additional wiring is required, thus preventing a decrease in the aperture ratio of the display panel 100.

[0054] like Figure 3 As shown in FIG. 1 , as one implementation in the embodiment of the present application, the first pixel array 120 is the upper half of the display panel 100, and the second pixel array 130 is the lower half of the display panel 100. The upper half and the lower half each occupy half of the pixels 110 in the display panel 100. It can be understood that the upper half and the lower half here refer to the upper and lower parts of the display panel 100, respectively, and each contains half the number of scan lines.

[0055] like Figure 4 As shown, in this embodiment, the pixel 110 further includes a control switch T4 and a second scan line scan2. Any two adjacent pixels 110 in the same row are designated as X1 and X2. The input end of the control switch T4 in pixel X2 is connected to the sensing line Vsen in pixel X1, the output end of the control switch T4 in pixel X2 is connected to the control end of the drive transistor T3 in pixel X2, and the control end of the control switch T4 is connected to the second scan line scan2 in pixel X2. It is understood that pixel X1 also includes a control switch T4 and a second scan line scan2, but these are not shown in the figure for clarity of contrast.

[0056] In this embodiment, the first scan line scan1 and the second scan line scan2 within the pixel 110 are scanned row by row. That is, within the same pixel 110, the first scan line scan1 is scanned first, then the second scan line scan2 is scanned, and then the first scan line scan1 in the next row of pixels 110 is scanned, and the scanning is performed row by row. Moreover, while the scan lines in the upper half of the screen are being scanned, the same scanning method is also performed on the scan lines in the lower half of the screen.

[0057] Combine Figure 5 、 Figure 6 and Figure 7 As shown, in this embodiment, the driving is divided into two stages. Specifically, in step S3, it also includes:

[0058] S31: In the first stage, driving a first preset row of pixels in the upper half of the display panel by the first driving data signal, and driving a second preset row of pixels in the lower half of the display panel by the second driving data signal;

[0059] S32: In the second stage, a first preset row of pixels in the upper half of the display panel is driven by the second driving data signal, and a second preset row of pixels in the lower half of the display panel is driven by the first driving data signal.

[0060] In this embodiment, if Figure 5 As shown, the pixels in the first preset row change to the first display state when receiving the first driving data signal, and the pixels in the second preset row change to the second display state when receiving the second driving data signal. Figure 6 As shown, the pixels in the first preset row maintain the first display state when receiving the second drive data signal, and the pixels in the second preset row maintain the second display state when receiving the first drive data signal. It can be understood that the first display state and the second display state are states where the pixels are powered on and working.

[0061] The first drive data signal and the second drive data signal may have different levels, but have the same refresh rate, and both contain only conventional refresh rate information, such as 60 Hz, 75 Hz, etc. This embodiment utilizes a conventional refresh rate drive signal to simultaneously input signals to the upper and lower screen halves. This allows the upper and lower screen halves to receive signals twice during conventional driving of a single image, achieving a frequency doubling effect while also reducing flicker and improving image quality.

[0062] In this embodiment, the first stage and the second stage together form the time required to scan a row of pixels 110 .

[0063] In other embodiments, the first and second phases may also jointly form the time required to complete a frame. In this case, the first phase is the time required to display the first half of the frame, and the second phase is the time required to display the second half of the frame. In the first phase, the pixels of the upper half of the screen are scanned row by row using the first drive data signal, and the pixels of the lower half of the screen are scanned row by row using the second drive data signal. In the second phase, the pixels of the upper half of the screen are scanned row by row using the second drive data signal, and the pixels of the lower half of the screen are scanned row by row using the first drive data signal.

[0064] In one embodiment, the number of rows of the first preset row of pixels in the upper half of the screen is the same as the number of rows of the second preset row of pixels in the lower half of the screen. As a specific example, in the first stage, when the first row of pixels in the upper half of the screen is driven by the first drive data signal, the first row of pixels in the lower half of the screen is also driven by the second drive data signal; in the second stage, when the first row of pixels in the upper half of the screen is driven by the second drive data signal, the first row of pixels in the lower half of the screen is also driven by the first drive data signal. Similarly, the above-mentioned "first row of pixels in the upper half of the screen" and "first row of pixels in the lower half of the screen" can also be replaced by "second row of pixels in the upper half of the screen" and "second row of pixels in the lower half of the screen", "third row of pixels in the upper half of the screen" and "third row of pixels in the lower half of the screen", etc.

[0065] Of course, in other embodiments, the number of rows of the first preset row of pixels in the upper half of the screen may be the same as the number of rows of the second preset row of pixels in the lower half of the screen. For example, in the first phase, while the first row of pixels in the upper half of the screen is driven by the first drive data signal, the second row of pixels in the lower half of the screen is also driven by the second drive data signal; and in the second phase, while the first row of pixels in the upper half of the screen is driven by the second drive data signal, the second row of pixels in the lower half of the screen is also driven by the first drive data signal. Specific selections can be made based on actual circumstances.

[0066] Understandably, in Figure 5 and Figure 6 In the figure, scan_1_1, scan_2_1, and scan_N_1 represent the first scan line of pixels in the first pixel array 120, scan_1_2, scan_2_2, and scan_N_2 represent the second scan line of pixels in the first pixel array 120, and sense_1 and sense_N represent test signal lines for the pixels in the first pixel array 120. scan_N+1_1 and scan_2N_1 represent the first scan line of pixels in the second pixel array 130, scan_N+1_2 and scan_2N_2 represent the second scan line of pixels in the second pixel array 130, and sense_N+1 and sense_2N represent test signal lines for the pixels in the second pixel array 130. Furthermore, the shaded area in the figure represents a blank phase.

[0067] like Figure 8 As shown, in this embodiment, the input end, output end, and control end of the control switch T4 in each pixel 110 can also be respectively connected to the structures in the pixel 110. Taking pixel X2 as an example, the input end of the control switch T4 in pixel X2 is connected to the sensing line Vsen in the pixel X2, the output end of the control switch T4 in pixel X2 is connected to the control end of the driving transistor T3 in the pixel X2, and the control end of the control switch T4 is connected to the second scan line scan2 in the pixel X2.

[0068] like Figure 9 As shown, as another implementation of the embodiment of the present application, the first pixel array 120 and the second pixel array 130 are also the upper half screen and the lower half screen of the display panel 100, respectively. Each pixel 110 has a control switch T4 and a second scan line scan2. The difference is that in the upper half screen, the first scan line scan1 of each pixel is turned on row by row, while the second scan line scan2 is not turned on; in the lower half screen, the second scan line scan2 of each pixel is turned on row by row, while the first scan line scan1 is not turned on; so that the first driving data signal can be provided to all pixels 110 in the first pixel array 120 through the data line data line, and the second driving data signal can be provided to all pixels 110 in the second pixel array 130 through the sensing line Vsen, and the pixels 110 in the upper half screen and the lower half screen are scanned separately at the same time, that is, while scanning the first row of pixels 110 in the upper half screen, the first row of pixels 110 in the lower half screen are also scanned, and the two are scanned separately and row by row.

[0069] Correspondingly, such as Figure 10 As shown, in step S3, it specifically includes:

[0070] S33: driving a first row of pixels in the upper half of the display panel using the first driving data signal, and driving other rows of pixels in the upper half of the display panel row by row;

[0071] S34: Simultaneously, the first row of pixels in the lower half of the display panel 100 is driven by the second driving data signal, and the other rows of pixels in the upper half of the display panel are driven row by row.

[0072] In this embodiment, the first driving data signal and the second driving data signal are complete data signals.

[0073] Of course, the pixel structure in this embodiment can also adopt other design methods. For example, instead of setting the fourth switch T4 and the second scan line scan2 in the pixel, the data signal and the sensing line signal in the data line are respectively introduced into different pixel arrays by adjusting the connection between the data line and the sensing line and the pixels in different areas, thereby achieving the effect of driving the two areas separately.

[0074] In other embodiments, the first pixel array 120 is an array composed of odd-numbered rows of pixels 110 in the display panel 100, and the second pixel array 130 is an array composed of even-numbered rows of pixels in the display panel 100; or, the first pixel array 120 is an array composed of even-numbered rows of pixels in the display panel 100, and the second pixel array 130 is an array composed of odd-numbered rows of pixels in the display panel 100; of course, the first pixel array 120 and the second pixel array 130 can also adopt other pixel arrangement methods, which are not elaborated here one by one.

[0075] like Figure 11 As shown, the gate drive circuit 500 includes a plurality of gate drive units 510. The nth row of pixels 110 in the first pixel array 120 and the nth row of pixels 110 in the second pixel array 130 are driven by the same gate drive unit 510, where n is a natural number not including 0. For example, the first pixel array 120 and the second pixel array 130 represent the upper and lower halves of the display panel 100, respectively. One gate drive unit 510 simultaneously provides scan signals to the first scan line in the upper and lower halves of the display panel 100. Another gate drive unit 510 simultaneously provides scan signals to the second scan line in the upper and lower halves of the display panel, and so on. This design facilitates uniformity and consistency when scanning the pixels 110 in the upper and lower halves of the display panel. This design only requires adding corresponding wiring, without the need for additional switches and drive units, and thus does not complicate the drive circuit.

[0076] It should be noted that the limitations on the various steps involved in this solution do not limit the order of the steps without affecting the implementation of the specific solution. The steps written in front can be executed first, later, or even simultaneously. The solutions of different embodiments can be combined and applied without conflict. As long as this solution can be implemented, it should be regarded as falling within the scope of protection of this application.

[0077] The above content is a further detailed description of the present application in conjunction with specific optional implementation methods, and the specific implementation of the present application cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, they can make several simple deductions or substitutions without departing from the concept of the present application, which should be considered to fall within the scope of protection of the present application.

Claims

1. A method for driving an organic light-emitting display, the organic light-emitting display comprising a display panel and an external compensation circuit, the external compensation circuit being used to compensate for electrical property differences of driving transistors within pixels of the display panel, characterized in that: Including steps: Simultaneously starting the data line in the display panel and the sensing line in the external compensation circuit, outputting a first driving data signal through the data line and outputting a second driving data signal through the sensing line; Turning on the scan lines in the first pixel array row by row, and simultaneously turning on the scan lines in the second pixel array row by row; as well as driving pixels in the first pixel array and pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal; Wherein, the first pixel array and the second pixel array are respectively part of the pixels in the display panel; The organic light emitting display further includes a first source driving circuit and a second source driving circuit, wherein the first source driving circuit is connected to a data line in the display panel, and the second source driving circuit is connected to a sensing line in the external compensation circuit; The pixel includes a first transistor, a second transistor, a driving transistor, a data line, a first scan line, a test signal line and a light emitting unit, and the external compensation circuit includes a sensing line, a reference voltage line, a first switch, a second switch, a switching switch and a compensation calculation unit; The control end of the first transistor is connected to the first scan line, the input end of the first transistor is connected to the data line, the output end of the first transistor is connected to the control end of the driving transistor, the output end of the driving transistor is connected to the light-emitting unit, the control end of the second transistor is connected to the test signal line, the input end of the second transistor is connected to the output end of the driving transistor, the output end of the second transistor is connected to the sensing line, the sensing line is connected to the second source driving circuit through the switching switch, the sensing line is connected to the reference voltage line through the first switch, the sensing line is connected to one end of the compensation calculation unit through the second switch, and the other end of the compensation calculation unit is connected to the first source driving circuit.

2. The driving method of an organic light emitting display according to claim 1, wherein: The first pixel array is an upper half of the display panel, and the second pixel array is a lower half of the display panel.

3. The driving method of the organic light emitting display according to claim 2, wherein: The step of driving the pixels in the first pixel array and the pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal includes: In the first stage, a first preset row of pixels in the upper half of the display panel is driven by the first driving data signal, and a second preset row of pixels in the lower half of the display panel is driven by the second driving data signal; In the second stage, a first preset row of pixels in the upper half of the display panel is driven by the second driving data signal, and a second preset row of pixels in the lower half of the display panel is driven by the first driving data signal; The pixels in the first preset row change to the first display state when receiving the first drive data signal, and the pixels in the second preset row change to the second display state when receiving the second drive data signal; the pixels in the first preset row maintain the first display state when receiving the second drive data signal, and the pixels in the second preset row maintain the second display state when receiving the first drive data signal; the first stage and the second stage together form the time required to scan one row of pixels.

4. The driving method of the organic light emitting display according to claim 3, wherein: The number of rows of the first preset rows of pixels in the upper half of the screen is the same as the number of rows of the second preset rows of pixels in the lower half of the screen.

5. The driving method of the organic light emitting display according to claim 2, wherein: The step of driving the pixels in the first pixel array and the pixels in the second pixel array respectively by using the first driving data signal and the second driving data signal includes: driving a first row of pixels in an upper half of the display panel using the first driving data signal, and driving other rows of pixels in the upper half of the display panel row by row; Simultaneously, driving the first row of pixels in the lower half of the display panel by the second driving data signal, and driving the other rows of pixels in the upper half of the display panel row by row; The first driving data signal and the second driving data signal are complete data signals respectively.

6. The driving method of an organic light emitting display according to claim 1, wherein: The first pixel array includes pixels in odd-numbered rows in the display panel, and the second pixel array includes pixels in even-numbered rows in the display panel.

7. An organic light emitting display, using the driving method of the organic light emitting display according to any one of claims 1 to 6, characterized in that: The organic light emitting display includes a display panel, an external compensation circuit, a first source driving circuit, a second source driving circuit, and a gate driving circuit, wherein the external compensation circuit is used to compensate for electrical differences in driving transistors in pixels of the display panel, the first source driving circuit is connected to a data line in the display panel, the second source driving circuit is connected to a sensing line in the external compensation circuit, and the gate driving circuit is connected to a scan line in the display panel; The display panel includes a first pixel array and a second pixel array, and while the first source driver circuit provides data signals to pixels in the first pixel array through data lines, the second source driver circuit provides data signals to pixels in the second pixel array through the sensing lines; while the first source driver circuit provides data signals to pixels in the second pixel array through data lines, the second source driver circuit provides data signals to pixels in the first pixel array through the sensing lines; The gate driving circuit scans the scan lines in the first pixel array and the second pixel array simultaneously.

8. The organic light emitting display according to claim 7, wherein: The first pixel array and the second pixel array each have a plurality of pixels, each pixel including a first transistor, a second transistor, a driving transistor, a data line, a first scan line, a test signal line, and a light-emitting unit, and the external compensation circuit includes a sensing line, a reference voltage line, a first switch, a second switch, a switching switch, and a compensation calculation unit; The control end of the first transistor is connected to the first scan line, the input end of the first transistor is connected to the data line, the output end of the first transistor is connected to the control end of the driving transistor, the output end of the driving transistor is connected to the light-emitting unit, the control end of the second transistor is connected to the test signal line, the input end of the second transistor is connected to the output end of the driving transistor, the output end of the second transistor is connected to the sensing line, the sensing line is connected to the second source driving circuit through the switching switch, the sensing line is connected to the reference voltage line through the first switch, the sensing line is connected to one end of the compensation calculation unit through the second switch, and the other end of the compensation calculation unit is connected to the first source driving circuit.

9. The organic light emitting display according to claim 8, wherein: The pixel further includes a control switch and a second scan line, wherein the input end of the control switch is connected to the sensing line in the adjacent pixels in the same row, the output end of the control switch is connected to the control end of the driving transistor in the corresponding pixel, and the control end of the control switch is connected to the second scan line; The first scanning line and the second scanning line in the pixel are scanned row by row in sequence.

10. The organic light emitting display according to claim 7, wherein: The gate driving circuit includes a plurality of gate driving units, and the pixels in the nth row in the first pixel array and the pixels in the nth row in the second pixel array are driven by the same gate driving unit; Here, n is a natural number excluding 0.

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