Display panel and image refreshing method thereof

Abstract

The application discloses a display panel and an image refreshing method thereof. The display panel comprises a control unit for receiving an image and refreshing the image. The display panel has n frames of images, and n>3. The control unit is used for receiving each frame of image. The image refreshing method comprises: performing local refreshing processing on image data of the first frame of image; sequentially performing at least local refreshing processing on image data of each frame of image from the second frame to the (n-1)th frame of image, wherein n>2; and performing local refreshing processing on image data of the n-th frame of image. The application adopts a new driving timing to optimize the driving timing, avoid time waste, solve the interference problem between different driving timings in a multifunctional integrated display panel, realize multifunctional integration of the display panel, and meanwhile, does not affect the display effect of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and an image refreshing method thereof. BACKGROUND

[0002] In recent years, the sensor integration technology of liquid crystal display panel (LCD) process has attracted much attention. This technology can directly integrate the light sensor into the liquid crystal display panel, so that the display panel achieves higher integration and thinness, and also reduces the overall cost. This integration is achieved by using the photoelectric conversion effect of semiconductor materials on the display substrate, and the light signal is converted into an electrical signal, thereby achieving detection and identification of the light signal.

[0003] However, due to the integration of the light sensor, a dedicated driving circuit is needed to drive and process the signal of the light sensor. The current panel driving IC architecture usually does not consider this driving function, so the common practice is to use a separate sensor type driving IC to drive the light sensor integrated in the panel. Therefore, there are usually two or more driving ICs on such integrated panels, one of which is mainly used to drive the light sensor.

[0004] When the light sensor is integrated into the panel, the corresponding driving timing needs to be redesigned to achieve simultaneous driving of the light sensor, display, and touch. For example, for APS type sensors, a common driving timing includes a first interval, an exposure interval, and a second interval. A common practice is to place the sensor driving timing in the blank frame by frame skipping, to achieve the integration of sensor driving and avoid mutual influence. However, this driving method will cause the screen refresh frequency to be reduced by half when the sensor is working. SUMMARY

[0005] The purpose of the present application is to provide a display panel and an image refreshing method thereof, to solve the problem of interference between different driving timings in a multifunctional integrated display panel, and the technical problem of reduced refresh frequency.

[0006] To achieve the above-mentioned purpose, the present application provides an image refreshing method of a display panel, the display panel comprising a control unit for receiving images and refreshing the images, the display panel having n frames of images, n>3, and n being an integer, wherein the control unit is configured to receive each frame of image, and the image refreshing method comprises:

[0007] performing local refreshing processing on image data of the first frame of image;

[0008] performing at least local refreshing processing on image data of each frame of image from the second frame of image to the (n-1)th frame of image in sequence; and

[0009] The image data of the nth frame of image is subjected to local refresh processing.

[0010] Further, the control unit is configured to receive a time for each frame of image including a first time period T1 and a second time period T2,

[0011] In the step of subjecting the image data of the first frame of image to local refresh processing, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain a variation of electric signal;

[0012] In the step of sequentially subjecting the image data of each frame of image in the second frame to the (n-1)th frame of image to at least local refresh processing, in each frame of image in the second frame to the (n-1)th frame of image, in the first time period T1 and the second time period T2, the control unit is configured to read a display data;

[0013] In the step of subjecting the image data of the nth frame of image to local refresh processing, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain a variation of electric signal.

[0014] Further, the step of sequentially subjecting the image data of each frame of image in the second frame to the (n-1)th frame of image to at least local refresh processing includes:

[0015] Subjecting the image data of the second frame of image to local refresh processing;

[0016] Sequentially subjecting the image data of each frame of image in the third frame to the (n-2)th frame of image to at least local refresh processing;

[0017] Subjecting the image data of the (n-1)th frame of image to local refresh processing.

[0018] Further, the control unit is configured to receive a time for each frame of image including a first time period T1 and a second time period T2,

[0019] In the step of subjecting the image data of the first frame of image to local refresh processing, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain a variation of electric signal;

[0020] In the step of subjecting the image data of the second frame of image to local refresh processing, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to read a blank frame;

[0021] In the step of sequentially performing at least partial refresh processing on the image data of each of the third frame to the n-2th frame images, in each of the third frame to the n-3th frame images, the control unit is configured to read a display data in the first time period T1 and the second time period T2;

[0022] In the step of performing partial refresh processing on the image data of the n-1th frame image, the control unit is configured to read a display data in the first time period T1 and read a blank frame in the second time period T2;

[0023] In the step of performing partial refresh processing on the image data of the n-1th frame image, the control unit is configured to read a display data in the first time period T1 and read a blank frame in the second time period T2;

[0024] Further, in the step of performing partial refresh processing on the image data of the first frame image, odd row image data or even row image data of the first frame image is refreshed in an interlaced scanning manner;

[0025] In the step of performing partial refresh processing on the image data of the second frame image, odd row image data or even row image data of the second frame image is refreshed in an interlaced scanning manner;

[0026] In the step of sequentially performing at least partial refresh processing on the image data of each of the third frame to the n-2th frame images, full refresh processing is sequentially performed on the image data of each of the third frame to the n-2th frame images;

[0027] In the step of performing partial refresh processing on the image data of the n-1th frame image, odd row image data or even row image data of the n-1th frame image is refreshed in an interlaced scanning manner;

[0028] In the step of performing partial refresh processing on the image data of the n-1th frame image, odd row image data or even row image data of the n-1th frame image is refreshed in an interlaced scanning manner;

[0029] In the step of performing partial refresh processing on the image data of the n-1th frame image, odd row image data or even row image data of the n-1th frame image is refreshed in an interlaced scanning manner;

[0030] Further, the control unit is configured to receive a time of each frame image including a first time period T1 and a second time period T2,

[0031] In the step of performing local refresh processing on the image data of the first frame image, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain a change amount of an electrical signal;

[0032] In the step of sequentially performing at least local refresh processing on the image data of each frame image of the second frame image to the (n-1)th frame image, in each frame image of the second frame image to the (n-1)th frame image, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to read a blank frame;

[0033] In the step of performing local refresh processing on the image data of the nth frame image, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain a change amount of an electrical signal.

[0034] Further, in the first frame image to the nth frame image,

[0035] odd row image data or even row image data of the previous frame image is refreshed in an interlaced scanning manner;

[0036] even row image data or odd row image data of the next frame image is refreshed in an interlaced scanning manner;

[0037] wherein the odd row image data of the previous frame image and the even row image data of the next frame image are combined into one frame image for output; or the even row image data of the previous frame image and the odd row image data of the next frame image are combined into one frame image for output.

[0038] Further, the display panel further comprises a first switch SW1 and a second switch SW2,

[0039] when SW1=1 and SW2=1, the control unit performs a reset processing on a sensor, and before the first switch is closed, the control unit reads a reset data, which is Ref(n-1);

[0040] when SW1=0 and SW2=0, the control unit performs a non-reset processing on the sensor, and before the second switch is closed, the control unit reads a non-reset data, which is RO(n);

[0041] wherein the change amount of the electrical signal is RO(n)-Ref(n-1).

[0042] To achieve the above object, the present application further provides a display panel, comprising:

[0043] at least two scan driving units, each of which has a plurality of scan lines and sequentially outputs scan signals to the plurality of scan lines; and

[0044] a control unit connected to each scan driving unit, used to selectively control the operation of the at least two scan driving units to realize at least partial refresh processing of image data of each frame image.

[0045] Further, the display panel further comprises:

[0046] a plurality of scan modules, each of which comprises the at least two scan driving units, the at least two scan driving units comprising

[0047] a first scan driving unit having a plurality of first scan lines;

[0048] a second scan driving unit having a plurality of second scan lines;

[0049] wherein the first scan lines are odd-numbered row scan lines and the second scan lines are even-numbered row scan lines, or the first scan lines are even-numbered row scan lines and the second scan lines are odd-numbered row scan lines;

[0050] in each scan module, when the control unit controls the first scan driving unit to output scan signals to the first scan lines, the second scan driving unit is in an off state; when the control unit controls the second scan driving unit to output scan signals to the second scan lines, the first scan driving unit is in an off state.

[0051] Further, the at least two scan driving units comprise a first scan driving unit block and a second scan driving unit block,

[0052] the first scan driving unit block comprises

[0053] a first sub-scan driving unit having a plurality of first sub-scan lines;

[0054] a second sub-scan driving unit having a plurality of second sub-scan lines;

[0055] wherein the first sub-scan lines are odd-numbered row scan lines and the second sub-scan lines are even-numbered row scan lines, or the first sub-scan lines are even-numbered row scan lines and the second sub-scan lines are odd-numbered row scan lines;

[0056] when the control unit controls the first sub-scanning driving unit to output a scanning signal to the first sub-scanning line, the second sub-scanning driving unit is in a closed state;

[0057] when the control unit controls the second sub-scanning driving unit to output a scanning signal to the second sub-scanning line, the first sub-scanning driving unit is in a closed state;

[0058] The second scanning driving unit block comprises a third sub-scanning driving unit and a fourth sub-scanning driving unit, and the third sub-scanning driving unit and the fourth sub-scanning driving unit each have a plurality of third sub-scanning lines;

[0059] The control unit controls the third sub-scanning driving unit and the fourth sub-scanning driving unit to output scanning signals to the third sub-scanning lines in sequence at the same time;

[0060] When the control unit controls the first scanning driving unit block to output a scanning signal to the scanning line corresponding thereto, the first and second scanning driving unit blocks are in a closed state;

[0061] When the control unit controls the second scanning driving unit block to output a scanning signal to the scanning line corresponding thereto, the first and second scanning driving unit blocks are in a closed state.

[0062] Further, the at least two scanning driving units comprise:

[0063] The first scanning driving unit has a plurality of first scanning lines;

[0064] The second scanning driving unit has a plurality of second scanning lines;

[0065] The first scanning line is an odd-numbered row scanning line, and the second scanning line is an even-numbered row scanning line; or, the first scanning line is an even-numbered row scanning line, and the second scanning line is an odd-numbered row scanning line;

[0066] When the control unit controls the first scanning driving unit to output a scanning signal to the first scanning line, the second scanning driving unit is in a closed state;

[0067] When the control unit controls the second scanning driving unit to output a scanning signal to the second scanning line, the first scanning driving unit is in a closed state.

[0068] The technical effect of the present application is to provide a display panel and an image refreshing method thereof, wherein the image refreshing method comprises: performing local refreshing processing on image data of a first frame of image; sequentially performing at least local refreshing processing on image data of each frame of image from a second frame to an n-1th frame of image; and performing local refreshing processing on image data of an nth frame of image, that is, using a new driving timing to optimize the driving timing, avoid time waste, and solve the interference problem between different driving timings in a multifunction integrated display panel, realize multifunction integration of the display panel, and do not affect the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0069] The technical scheme and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings.

[0070] Figure 1a A driving timing diagram of a current in-cell touch panel using a long horizontal mode (long-H).

[0071] Figure 1b A driving timing diagram of a current in-cell touch panel using a long vertical mode (long-V).

[0072] Figure 2a A driving timing diagram applied to a sensor integrated display panel.

[0073] Figure 2b A driving timing diagram of an APS type sensor.

[0074] Figure 2c A driving circuit diagram of a sensor unit.

[0075] Figure 3 A flowchart of an image refreshing method of a display panel provided by Embodiment 1 of the present application.

[0076] Figure 4 A driving timing diagram of a display panel provided by Embodiment 1 of the present application.

[0077] Figure 5 A structural diagram of a display panel provided by the present application.

[0078] Figure 6 A schematic diagram one of a GOA circuit structure provided by Embodiment 1 of the present application.

[0079] Figure 7 A first frame driving timing diagram provided by Embodiment 1 of the present application.

[0080] Figure 8FIG. 2 is a schematic diagram of a GOA circuit structure provided for Embodiment 1 of the present application.

[0081] Figure 9 FIG. 4 is a flowchart of an image refreshing method of a display panel provided for Embodiment 2 of the present application.

[0082] Figure 10 FIG. 5 is a driving timing diagram of a display panel provided for Embodiment 2 of the present application.

[0083] Figure 11 FIG. 6 is a driving timing diagram of a first frame and a second frame provided for Embodiment 2 of the present application.

[0084] Figure 12 FIG. 7 is a driving timing diagram of a third frame and a fourth frame provided for Embodiment 2 of the present application.

[0085] Figure 13 FIG. 8 is a schematic diagram of a GOA circuit structure provided for Embodiment 2 of the present application.

[0086] Figure 14 FIG. 10 is a flowchart of an image refreshing method of a display panel provided for Embodiment 3 of the present application.

[0087] Figure 15 FIG. 11 is a driving timing diagram of a display panel provided for Embodiment 3 of the present application.

[0088] Figure 16 FIG. 12 is a driving timing diagram of a first frame and a second frame provided for Embodiment 3 of the present application.

[0089] Figure 17 FIG. 13 is a schematic diagram of a GOA circuit structure provided for Embodiment 3 of the present application. DETAILED DESCRIPTION

[0090] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0091] In the description of the present application, it should be understood that the terms “first”, “second” are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0092] Figure 1aA driving timing diagram of a long-H mode for an in-cell touch panel; Figure 1b A driving timing diagram of a long-V mode for an in-cell touch panel.

[0093] As Figures 1a-1b shown, Figure 1a and Figure 1b are two commonly used driving modes for an in-cell touch panel. In these two driving modes, each frame includes a touch term, a display term, and a blanking term. Among them, Figure 1a the touch timing distribution of the long-H mode, in which multiple touch terms are distributed in the display term. Figure 1b the touch timing distribution of the long-V mode, in which the touch term is distributed in the blanking term of the display term, that is, the blank time during the vertical scanning of the screen, and the screen display refresh action is continuous at this time.

[0094] Figure 2a A driving timing diagram of a sensor integrated display panel. Figure 2b A driving timing diagram of an APS type sensor.

[0095] As Figure 2a shown, Figure 2a the driving mode of the display panel is to insert two empty frames in the continuous display frame to realize the driving of the sensor. As Figure 2b shown, the driving timing of each sensor is composed of sensing N-1 ( Figure 2a and 2b sN-1 in Figure 2a and 2bThe system consists of three driving intervals: sensing N-1 (represented by sN-2), sensing N-2 (represented by sN-2), and exposure time. Sensing N-1 and sensing N-2 are located within two empty frames; they are placed in frame-blanking intervals or empty frames to avoid the influence of display and touch driving timing on sensor driving timing. Exposure time is composed of N display frames. Figure 2b In this diagram, switch SW1 controls the sensor reset, and switch SW2 controls signal reading. When both SW1 and SW2 are high, the sensor is reset within this interval, and data is read before SW1 is turned off. This data is denoted as Ref. When both SW1 and SW2 are low, the sensor is not reset; data is read only before SW2 is turned off. This data is denoted as RO, where the electrical signal change is RO(n) - Ref(n-1). One data processing method uses RO(n) - Ref(n-1) to represent the electrical signal change caused by the light signal within this exposure time width. When the light signal magnitude or the exposure time width changes, the value of RO(n) - Ref(n-1) changes accordingly, thus achieving light signal detection.

[0096] Figure 2c This is a driving circuit diagram for a sensor unit.

[0097] like Figure 2c As shown, the driving circuit diagram of the sensor unit includes a first thin-film transistor T1, a second thin-film transistor T2, a third thin-film transistor T3, a fourth thin-film transistor T4, a capacitor C1, and a light-emitting device L. The first thin-film transistor T1 acts as a reset switch SW1 to control the sensor. The first terminal of the first thin-film transistor T1 is connected to a reset signal V1, and the second terminal is connected to the first node V. Q The control terminal is used to control the opening and closing of the first thin-film transistor T1 according to the reset signal. The second thin-film transistor T2 serves as a signal readout switch for the control sensor. The first terminal of the second thin-film transistor T2 is connected to the data signal, and the second terminal is connected to the first terminal of the third thin-film transistor T3. The second terminal of the second thin-film transistor T2 is connected to the first node V. Q The control terminal is used to control the switching on and off of the second thin-film transistor T2 based on the data signal. The second terminal of the third thin-film transistor T3 is connected to the second node Vx, the first terminal of the fourth thin-film transistor T4 is connected to the second node Vx, and the second terminal of the fourth thin-film transistor T4 is connected to the ground terminal. The first plate of capacitor C1 is connected to the first node Vx. QThe second plate of the capacitor C1 is connected to the common terminal Vcomm, and the first electrode of the light emitting device L is connected to the first node V Q The first electrode of the light emitting device L is connected to the common terminal Vcomm. A sensing line Vout is connected to the second node Vx to feed back a detection signal to the control unit 100 (sensor control unit 102). It should be noted that the first end and the second end of the thin film transistors T1, T2, T3 and T4 are either a source or a drain, which can be limited according to actual conditions and is not particularly limited here. The other control terminals can refer to the existing technology and will not be described here.

[0098] The exposure time is determined by the design parameters of the sensor, the target detection brightness range, the detection accuracy and other key factors. The design parameters include the sensor area, the capacitor and the like; the detection brightness range includes 0~10lx, 10~100lx and the like; and the detection accuracy includes 0.05lx step and the like. In the exposure time interval, the panel is still driven in a normal manner, that is, each display frame is refreshed in the manner of Figure 1a or Figure 2a Therefore, the panel performance is not lost in this interval.

[0099] However, the sensing interval of the sensor is selected to avoid the influence of the display and touch timing on the sensor driving timing, and can be placed in the frame skipping interval or the blank frame. In order to ensure sufficient data reading time and avoid data errors, the sensing time is usually greater than the vertical blanking time in the display frame, especially for high refresh rate panels, the vertical blanking time is shorter. Therefore, the synchronization of the two is often maintained by frame synchronization, that is, the sensing interval is placed in the blank frame. However, when the blank frame is displayed, the display and touch are not refreshed normally, resulting in a loss of half of the refresh frequency.

[0100] In actual application, for applications requiring a short exposure time, sensing N-1 and N-2 can be placed in a blank frame, and the utilization rate of the blank frame time is high. However, for applications requiring a long exposure time, a single blank frame only contains one sensing interval, and most of the time in the blank frame is not used, which will cause waste of driving time.

[0101] Therefore, the embodiment of the present application provides an image refreshing method of a display panel to overcome the above defects.

[0102] Figure 3 The flowchart of the image refreshing method of the display panel provided in Embodiment 1 of the present application.

[0103] AsFigure 3 As shown, the display panel includes a control unit for receiving and refreshing images; this control unit is a display control unit. The display panel has n frames of images, where n > 3 and n is an integer. The control unit receives each frame of image, and the image refresh method includes:

[0104] S1. Perform partial refresh processing on the image data of the first frame;

[0105] S2. Perform at least partial refresh processing on the image data of each frame from frame 2 to frame (n-1) in sequence; and

[0106] S3. Perform partial refresh processing on the image data of the nth frame.

[0107] Figure 4 This is a schematic diagram of the driving timing of the display panel provided in Embodiment 1 of this application.

[0108] like Figure 4 As shown, in some embodiments, the time for the control unit to receive each frame of image includes a first time period T1 and a second time period T2, and the image data includes display data and electrical signal changes.

[0109] In step S1, during the first time period T1, the control unit reads a display data, and during the second time period T2, the control unit acquires a change in an electrical signal. In this step, the first time period T1 is the display interval, and the second time period T2 is the blanking interval.

[0110] In step S2, in each frame of the image from frame 2 to frame (n-1), during the first time period T1 and the second time period T2, the control unit is used to read display data.

[0111] In step S3, during the first time period T1, the control unit reads a display data, and during the second time period T2, the control unit acquires a change in an electrical signal.

[0112] In steps S1 and S3, during the second time period T2, the sensor performs a sensing action by occupying a portion of the time of a frame of image data and feeding back the change in electrical signal to the control unit. This changes the way the image data is refreshed, thereby optimizing the driving timing.

[0113] Furthermore, the display panel also includes a first switch SW1 and a second switch SW2, as can be seen from... Figure 2aWhen SW1=1 and SW2=1, the control unit resets a sensor. Before the first switch is closed, the control unit reads the reset data, denoted as Ref(n-1). When SW1=0 and SW2=0, the control unit performs a non-reset operation on the sensor. Before the second switch is closed, the control unit reads the non-reset data, denoted as RO(n). The change in electrical signal is represented by RO(n)-Ref(n-1). This data processing method uses RO(n)-Ref(n-1) to represent the change in electrical signal caused by the light signal within the exposure time width. When the light signal magnitude or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, thereby achieving the detection of the light signal. The control unit used to read display data is called the display unit, and the control unit used to acquire the change in electrical signal is called the sensor control unit.

[0114] It should be noted that S1~S3 is an image refresh cycle. Before or after the start of this image refresh cycle, the image is refreshed once for each frame of the display panel, that is, the whole screen is refreshed and the image is displayed completely. In other words, before or after the start of this image refresh cycle, the first time period T1 and the second time period T2 are both display intervals.

[0115] Combination Figure 4 As shown, in actual operation, the first frame enters a partial refresh mode, meaning that only the areas within a frame where image data changes are refreshed, while other areas where image data hasn't changed are left unrefreshed. Therefore, in the first frame, the number of refreshes decreases while the refresh rate remains constant, using the time originally allocated for refreshing other image data for sensing actions; this corresponds to the first sensing sN-1 stage. Alternatively, by increasing the blanking width of the first frame, the first sensing sN-1 (sensing 1) stage is completed within the blanking interval of the first frame, thus entering the sensing period. From the second frame to the (n-1)th frame, the image data of each frame is completely refreshed, identical to the refresh actions at the beginning or end of the image refresh cycle. In the nth frame, the partial refresh mode is re-entered, and the second sensing sN-2 (sensing 2) stage is completed within the blanking interval of this frame, until the entire sensing period ends. Therefore, the image refresh method of this display panel adopts a new driving timing sequence to optimize the driving timing sequence, avoid time waste, and also solve the interference problem between different driving timing sequences in the multi-functional integrated display panel, so as to realize the multi-functional integration of the display panel without affecting the display effect of the display panel.

[0116] Figure 5 A structural schematic diagram of a display panel is provided for the present application.

[0117] As shown in Figure 5 , the display panel includes a display area AA and a non-display area NA, the GOA circuit structure is arranged in the display area AA, and the GOA circuit structure is used to drive R, G and B sub-pixels to realize the display of the panel. The control unit 100 and the sensor 300 are arranged in the non-display area NA, the control unit includes a display control unit 101 and a sensor control unit 102, the display control unit 101 is connected with the R, G and B sub-pixels, the sensor control unit 102 is connected with the sensor 300, the sensor control unit 102 can send signals to the sensor 300, or is used to receive the signals fed back by the sensor 300.

[0118] Figure 6 A schematic diagram I of the GOA circuit structure is provided for the embodiment 1 of the present application.

[0119] As shown in Figure 6 , the present embodiment further provides a display panel, including a GOA circuit structure, the GOA circuit structure includes:

[0120] at least two scan driving units, each scan driving unit has a plurality of scan lines SL, and sequentially outputs scan signals to the plurality of scan lines SL; and

[0121] a control unit 100 connected to each scan driving unit, used to selectively control the operation of the at least two scan driving units to realize at least partial refresh processing of the image data of each frame image.

[0122] The display panel further comprises a first switch (not shown in the figure), a second switch (not shown in the figure) and at least one sensor, and the control unit 100 is connected to the first switch, the second switch and the sensor 300 respectively. When SW1=1 and SW2=1 (i.e. both switches are in the open state), the control unit resets a sensor, and reads reset data Ref(n-1) before the first switch is closed. When SW1=0 and SW2=0 (i.e. both switches are in the closed state), the control unit does not reset the sensor, and reads non-reset data RO(n) before the second switch is closed. The change in the electrical signal is RO(n)-Ref(n-1). This data processing method represents the change in the electrical signal caused by the optical signal in this exposure time width. When the size of the optical signal changes or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, so as to realize the detection of the optical signal.

[0123] In some embodiments, the GOA circuit structure comprises a plurality of scan modules 200, each scan module 200 comprising at least two scan driving units as described above, and in the embodiments of the present application, each scan module 200 comprises two scan driving units, i.e. a first scan driving unit and a second scan driving unit. The first scan driving unit has a plurality of first scan lines. The second scan driving unit has a plurality of second scan lines.

[0124] In some embodiments, the first scan lines are odd-numbered row scan lines, and the second scan lines are even-numbered row scan lines; or, the first scan lines are even-numbered row scan lines, and the second scan lines are odd-numbered row scan lines.

[0125] In each scan module 200, when the control unit 100 controls the first scan driving unit to output a scan signal to the first scan lines, the second scan driving unit is in the closed state; and when the control unit 100 controls the second scan driving unit to output a scan signal to the second scan lines, the first scan driving unit is in the closed state.

[0126] For example, in an embodiment, in combination with Figure 5 as shown, Figure 5The GOA circuit structure is a single-side driving interlace structure. The GOA circuit structure is divided into seven scan modules 200, which are a first scan module, a second scan module, a third scan module, a fourth scan module, a fifth scan module, a sixth scan module, and a seventh scan module from top to bottom. Each scan module includes a first scan driving unit GOA_L1, GOA_L2, GOA_L3, GOA_L4, GOA_L5, GOA_L6, and GOA_L7 on the left side and a second scan driving unit GOA_R1, GOA_R2, GOA_R3, GOA_R4, GOA_R5, GOA_R6, and GOA_R7 on the right side. In operation, for example, in the first frame or the nth frame, the first scan driving unit GOA_L1 normally works and sequentially outputs a scan signal to the odd-numbered scan lines corresponding thereto, so that the odd-numbered Gate circuits corresponding thereto are sequentially and step by step opened to complete image data update at the corresponding positions, and the second scan driving unit GOA_R1 is in a closed state and does not work, so that the even-numbered image data is not updated. Alternatively, in the first frame or the nth frame, the second scan driving unit GOA_R1 normally works and sequentially outputs a scan signal to the even-numbered scan lines corresponding thereto, so that the even-numbered Gate circuits corresponding thereto are sequentially and step by step opened to complete image data update at the corresponding positions, and the first scan driving unit GOA_L1 is in a closed state and does not work, so that the odd-numbered image data is not updated.

[0127] Figure 7 A first frame driving timing diagram is provided for Embodiment 1 of the present application.

[0128] In combination with Figures 6-7 As shown in the figure, in the image refreshing mode, if the first frame image needs to be updated, the physical positions on the display panel are controlled by the third scan module, the fourth scan module, and the fifth scan module. In this frame, the first scan module, the second scan module, the sixth scan module, and the seventh scan module are in a closed state and do not work. Only the third scan module, the fourth scan module, and the fifth scan module work in sequence to refresh the image data of the corresponding area. Similarly, more time can be generated in one frame to complete the sensing action.

[0129] Figure 8 A second schematic diagram of the GOA circuit structure provided for Embodiment 1 of the present application.

[0130] For another example, in combination with Figure 8 As shown in the figure, Figure 8The GOA circuit structure is a double-side driving interlace structure, which is divided into seven scan modules, from top to bottom, the first scan module, the second scan module, the third scan module, the fourth scan module, the fifth scan module, the sixth scan module and the seventh scan module. Each scan module includes a first scan driving unit GOA_L1, GOA_L2, GOA_L3, GOA_L4, GOA_L5, GOA_L6, GOA_L7 on the left side and a second scan driving unit GOA_R1, GOA_R2, GOA_R3, GOA_R4, GOA_R5, GOA_R6, GOA_R7 on the right side. In operation, for example, in the first frame (frame 1) or the nth frame (frame n) image, the first scan driving unit GOA_L1 and the second scan driving unit GOA_R1 normally work, sequentially outputting scan signals to the corresponding odd-numbered row scan lines, so that the corresponding odd-numbered row Gate circuits are sequentially opened, the image data at the corresponding positions is updated, and the even-numbered row Gate circuits are in a closed state, i.e. the image data of the even-numbered row is not updated; then, sequentially outputting scan signals to the corresponding even-numbered row scan lines, so that the corresponding even-numbered row Gate circuits are sequentially opened, the image data at the corresponding positions is updated, and the odd-numbered row Gate circuits are in a closed state, i.e. the image data of the odd-numbered row is not updated. In addition to the first frame or the nth frame image, other frame images are refreshed in an odd-even alternating order to achieve full refresh of each frame image.

[0131] Therefore, the embodiment of the present application adopts a new driving timing to optimize the driving timing, avoid time waste, and solve the interference problem between different driving timings in a multifunctional integrated display panel, realize multifunctional integration of the display panel, and meanwhile do not affect the display effect of the display panel.

[0132] Embodiment 2

[0133] The embodiment of the present application provides a display panel and an image refreshing method thereof, which include most of the technical solutions in embodiment 1, and the difference lies in that the first frame, the second frame, the (n-1)th frame and the nth frame are subjected to local refreshing processing.

[0134] Figure 9 The flowchart of the image refreshing method of the display panel provided in embodiment 2 of the present application.

[0135] Specifically, as shown in Figure 9 The embodiment of the present application provides an image refreshing method of a display panel, the display panel including n frames of images, n>3, and the image refreshing method including:

[0136] S11, performing local refreshing processing on image data of the first frame of image;

[0137] S12, sequentially performing at least partial refresh processing on image data of each of the second frame to the n-1th frame images; and

[0138] S13, performing partial refresh processing on image data of the nth frame image.

[0139] Figure 10 A driving timing diagram of the display panel provided in Embodiment 2 is shown.

[0140] As shown in Figure 10 In some embodiments, the control unit is configured to receive a time of each frame image including a first time period T1 and a second time period T2, and the image data includes display data, an electrical signal change amount, and a blank frame.

[0141] In the S11 step, the display data is set in the first time period T1, and the sensing data is set in the second time period T2. In this step, the first time period T1 is a display interval, and the second time period T2 is a blanking interval.

[0142] Figure 11 A driving timing diagram of the first frame and the second frame provided in Embodiment 2 is shown. Figure 11 A driving timing diagram of the third frame and the fourth frame provided in Embodiment 2 is shown.

[0143] As shown in Figures 10-12 In some embodiments, the odd row image data or the even row image data of the first frame image is refreshed in an interlaced scanning manner. That is, the odd row image data of the first frame image can be sequentially refreshed, or the even row image data of the first frame image can be sequentially refreshed, so that the partial refresh of the first frame image can be realized.

[0144] In the S12 step, it includes:

[0145] S121, performing partial refresh processing on image data of the second frame image;

[0146] S122, sequentially performing at least partial refresh processing on image data of each of the third frame to the n-2th frame images;

[0147] S123, performing partial refresh processing on image data of the n-1th frame image.

[0148] In the S121 step, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to read a blank frame.

[0149] As shown in Figures 9-10As shown, in some embodiments, the odd row image data or the even row image data of the second frame image is refreshed in an interlaced manner. That is, the odd row image data of the second frame image can be refreshed in sequence, or the odd row image data of the second frame image can be refreshed in sequence, so that the partial refresh of the second frame image can be realized.

[0150] It should be noted that the odd row image data of the first frame image and the even row image data of the second frame image are combined into one frame image for output; or the even row image data of the first frame image and the odd row image data of the second frame image are combined into one frame image for output. Among them, the first frame image and the second frame image are field images in the next frame image.

[0151] In combination Figure 9 And Figure 11 As shown, in step S122, in each of the third frame to the (n-3)th frame image, the control unit is configured to read a display data in the first time period T1 and the second time period T2.

[0152] In some embodiments, the image data of each of the third frame to the (n-2)th frame image is refreshed in sequence. In each of the third frame to the (n-2)th frame image, the image data is refreshed in an odd-even alternating order to realize the full refresh of each frame image. Figure 11 Only the timing of the third frame and the fourth frame is shown, and it should be noted that the timing diagram of each of the third frame to the (n-2)th frame image is the same, which will not be described here.

[0153] In step S123, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit reads an empty frame.

[0154] Referring to Figure 10 As shown, in some embodiments, the odd row image data or the even row image data of the (n-1)th frame image is refreshed in an interlaced manner. That is, the odd row image data of the (n-1)th frame image can be refreshed in sequence, or the odd row image data of the (n-1)th frame image can be refreshed in sequence, so that the partial refresh of the (n-1)th frame image can be realized. It should be noted that the refresh mode of the (n-1)th frame image is the same as that of the second frame image, which will not be described here.

[0155] In step S13, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit obtains a change amount of an electrical signal.

[0156] Referring to Figure 10As shown, in some embodiments, odd row image data or even row image data of the nth frame image is refreshed in an interlaced manner. That is, odd row image data of the nth frame image can be refreshed sequentially, or even row image data of the nth frame image can be refreshed sequentially, so that partial refresh of the nth frame image can be achieved. It should be noted that the nth frame image refresh mode is the same as the first frame image refresh mode, which will not be described here.

[0157] In steps S11 and S13, in the second time period T2, the sensor performs sensing by occupying part of the time of a frame of image data, and feeds back the electrical signal change to the control unit, so that the refresh mode of the image data can be changed, thereby optimizing the driving timing.

[0158] Further, the display panel further comprises a first switch SW1 and a second switch SW2, which can be referred to Figure 2a When SW1=1 and SW2=1, the control unit performs reset processing on a sensor, and at the same time before the first switch is closed, the control unit reads reset data, which is Ref(n-1); when SW1=0 and SW2=0, the control unit performs non-reset processing on the sensor, and at the same time before the second switch is closed, the control unit reads non-reset data, which is RO(n); wherein the electrical signal change is RO(n)-Ref(n-1). This data processing mode is to represent the electrical signal change caused by the optical signal in this exposure time width by RO(n)-Ref(n-1). When the size of the optical signal changes or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, so as to realize the detection of the optical signal.

[0159] It should be noted that S11-S13 is an image refresh cycle, before or after the start or end of the image refresh cycle, the display panel is restored to complete image refresh of each frame of image, that is, full screen refresh, complete image display, that is, before or after the start or end of the image refresh cycle, the first time period T1 and the second time period T2 are display intervals.

[0160] In actual work, as shown in FIG. 10, the first frame of image enters the partial refresh mode, that is, in the frame of image, only the odd-numbered row image data corresponding to the target image is refreshed, and the even-numbered row image data is not refreshed. Therefore, in the first frame of image, the number of refresh is halved while the refresh rate remains unchanged, and the time originally used for refreshing the even-numbered row image data is used for sensing action, that is, the first sensing sN-1 (sensing 1) stage action is completed in the second time period T2 of the first frame. The second frame of image enters the partial refresh mode, that is, in the frame of image, only the even-numbered row image data corresponding to the target image is refreshed, and the odd-numbered row image data is not refreshed. The first frame of image and the second frame of image are field images in the next frame of image. Starting from the third frame of image, the image data is refreshed in an odd-even alternating order to achieve full refresh of the frame of image, that is, the action mode returns to the full image refresh, until the (n-2)th frame of image ends. The (n-1)th frame of image enters the partial refresh mode again, that is, in the frame of image, only the odd-numbered row image data corresponding to the target image is refreshed, and the even-numbered row image data is not refreshed. The nth frame of image enters the partial refresh mode, that is, in the frame of image, only the even-numbered row image data corresponding to the target image is refreshed, and the odd-numbered row image data is not refreshed. The (n-1)th frame of image and the nth frame of image are field images in the next frame of image. Therefore, in the nth frame of image, the number of refresh is halved while the refresh rate remains unchanged, and the time originally used for refreshing the even-numbered row image data is used for sensing action, that is, the second sensing sN-2 (sensing 2) stage action is completed in the second time period T2 of the nth frame, and the entire sensing process ends here. This image refresh method only needs to change the image refresh mode of the display panel in the sensing 1 and sensing 2 corresponding stages, and still maintains the original refresh mode at other times. Therefore, the image refresh method of the display panel uses a new driving time sequence to optimize the driving time sequence, avoid time waste, and also solves the interference problem between different driving time sequences in the multifunctional integrated display panel, realizes multifunctional integration of the display panel, and does not affect the display effect of the display panel.

[0161] Figure 13 A schematic diagram of a GOA circuit structure provided by Embodiment 2 of the application.

[0162] As Figure 13 shown, the application further provides a display panel comprising a GOA circuit structure, the GOA circuit structure comprising:

[0163] at least two scan driving units, each scan driving unit having a plurality of scan lines SL and sequentially outputting scan signals to the plurality of scan lines SL; and

[0164] The control unit 100 is connected to each of the scan driving units, and is configured to selectively control the at least two scan driving units to work, so as to realize at least partial refresh processing of image data of each frame image.

[0165] The display panel further comprises a first switch (not shown), a second switch (not shown), and at least one sensor. The control unit 100 is connected to the first switch, the second switch, and the sensor 300 respectively. When SW1=1 and SW2=1 (i.e., both switches are in the open state), the control unit performs reset processing on a sensor, and reads reset data Ref(n-1) before the first switch is closed. When SW1=0 and SW2=0 (i.e., both switches are in the closed state), the control unit performs non-reset processing on the sensor, and reads non-reset data RO(n) before the second switch is closed. The change amount of the electrical signal is RO(n)-Ref(n-1). This data processing mode is to take RO(n)-Ref(n-1) to represent the change amount of the electrical signal caused by the optical signal within the exposure time width. When the size of the optical signal changes or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, so as to realize detection of the optical signal.

[0166] In some embodiments, the at least two scan driving units comprise a first scan driving unit block and a second scan driving unit block.

[0167] Specifically, the first scan driving unit block comprises a first sub-scan driving unit GOA_L11 and a second sub-scan driving unit GOA_R11. The first sub-scan driving unit GOA_L11 has a plurality of first sub-scan lines, and the second sub-scan driving unit GOA_R11 has a plurality of second sub-scan lines. The first sub-scan lines are odd-numbered row scan lines, and the second sub-scan lines are even-numbered row scan lines; or the first sub-scan lines are even-numbered row scan lines, and the second sub-scan lines are odd-numbered row scan lines.

[0168] When the control unit 100 controls the first sub-scan driving unit GOA_L11 to output a scan signal to the first sub-scan lines, the second sub-scan driving unit GOA_R11 is in a closed state; when the control unit 100 controls the second sub-scan driving unit GOA_R11 to output a scan signal to the second sub-scan lines, the first sub-scan driving unit GOA_L11 is in a closed state.

[0169] The second scan driving unit block comprises a third sub-scan driving unit GOA_L12 and a fourth sub-scan driving unit GOA_R12, and both the third sub-scan driving unit and the fourth sub-scan driving unit have a plurality of third sub-scan lines.

[0170] The control unit 100 controls the third sub scanning driving unit GOA_L12 and the fourth sub scanning driving unit GOA_R12 to output scanning signals to the third sub scanning lines in sequence.

[0171] When the control unit 100 controls the first scanning driving unit block GOA_L11 to output scanning signals to the scanning lines corresponding thereto, the second scanning driving unit block GOA_L12 is in an off state; when the control unit 100 controls the second scanning driving unit block GOA_L12 to output scanning signals to the scanning lines corresponding thereto, the first scanning driving unit block GOA_L11 is in an off state.

[0172] For example, in an embodiment, in combination with Figure 12 as shown in FIG. 4, Figure 12The GOA circuit structure is a double-sided driving interlace structure, and has two groups of scan driving units, wherein the first group is a first sub-scan driving unit GOA_L11 and a second sub-scan driving unit GOA_R11, and the second group is a third sub-scan driving unit GOA_L12 and a fourth sub-scan driving unit GOA_R12. In operation, for example, in a first frame of image, the first sub-scan driving unit GOA_L11 normally operates and sequentially outputs a scan signal to an odd-numbered row scan line corresponding to the first sub-scan driving unit GOA_L11, so that the odd-numbered row Gate circuit corresponding to the first sub-scan driving unit GOA_L11 is sequentially and step-by-step opened, and the image data at the corresponding position is updated, and the second sub-scan driving unit GOA_R11 is in a closed state and does not operate, so that the image data of the even-numbered row is not updated. In a second frame of image, the second sub-scan driving unit GOA_R11 normally operates and sequentially outputs a scan signal to an even-numbered row scan line corresponding to the second sub-scan driving unit GOA_R11, so that the even-numbered row Gate circuit corresponding to the second sub-scan driving unit GOA_R11 is sequentially and step-by-step opened, and the image data at the corresponding position is updated, and the first sub-scan driving unit GOA_L11 is in a closed state and does not operate, so that the image data of the odd-numbered row is not updated. The odd-numbered row image data of the first frame of image and the even-numbered row image data of the second frame of image are combined into one frame of image and output, and the first frame of image and the second frame of image are field images in a next frame of image. From a third frame of image to an n-2th frame of image, the third sub-scan driving unit GOA_L12 and the fourth sub-scan driving unit GOA_R12 normally operate, and sequentially refresh the image data of each frame of image in an odd-even alternation order, so as to realize full refresh of each frame of image. In an n-1th frame of image, the first sub-scan driving unit GOA_L11 normally operates and sequentially outputs a scan signal to an odd-numbered row scan line corresponding to the first sub-scan driving unit GOA_L11, so that the odd-numbered row Gate circuit corresponding to the first sub-scan driving unit GOA_L11 is sequentially and step-by-step opened, and the image data at the corresponding position is updated, and the second sub-scan driving unit GOA_R11 is in a closed state and does not operate, so that the image data of the even-numbered row is not updated. In an nth frame of image, the second sub-scan driving unit GOA_R11 normally operates and sequentially outputs a scan signal to an even-numbered row scan line corresponding to the second sub-scan driving unit GOA_R11, so that the even-numbered row Gate circuit corresponding to the second sub-scan driving unit GOA_R11 is sequentially and step-by-step opened, and the image data at the corresponding position is updated, and the first sub-scan driving unit GOA_L11 is in a closed state and does not operate, so that the image data of the odd-numbered row is not updated.

[0173] Therefore, the embodiment of the application adopts a new driving timing to optimize the driving timing, avoid time waste, and solve the interference problem between different driving timings in a multifunction integrated display panel, so as to realize multifunction integration of the display panel without affecting the display effect of the display panel.

[0174] Embodiment 3

[0175] The embodiment of the present application provides a display panel and an image refreshing method thereof, which comprises most of the technical solutions in the embodiment 1, and the difference is that, from the first frame of image to the n-th frame of image, each frame of image is subjected to local refreshing processing, and the even row image data of the previous frame of image and the odd row image data of the next frame of image are synthesized into one frame of image and outputted.

[0176] Figure 14 The embodiment 3 of the present application provides a flow chart of the image refreshing method of the display panel.

[0177] Specifically, as shown in the embodiment 1, Figure 14 The embodiment of the present application provides an image refreshing method of a display panel, the display panel comprising n frames of image, n>3, and the image refreshing method comprising:

[0178] S21, performing local refreshing processing on the image data of the first frame of image;

[0179] S22, sequentially performing at least local refreshing processing on the image data of each frame of image in the second frame to the n-1-th frame of image, wherein n>2; and

[0180] S23, performing local refreshing processing on the image data of the n-th frame of image.

[0181] As shown in the embodiment 1, Figure 14 In some embodiments, the control unit is used for receiving the time of each frame of image, which comprises a first time period T1 and a second time period T2, and the image data comprises display data, an electric signal change amount and an empty frame.

[0182] In the S21 step, in the first time period T1, the control unit is used for reading a display data, and in the second time period T2, the control unit is used for obtaining an electric signal change amount;

[0183] In the S22 step, in each frame of image in the second frame to the n-1-th frame of image, in the first time period T1, the control unit is used for reading a display data, and in the second time period T2, the control unit is used for reading an empty frame;

[0184] In the S23 step, in the first time period T1, the control unit is used for reading a display data, and in the second time period T2, the control unit is used for obtaining an electric signal change amount.

[0185] In the S21 step and the S23 step, in the second time period T2, the sensor is used for occupying part of the time of one frame of image data to realize the sensing action, and the electric signal change amount is fed back to the control unit, so that the refreshing mode of the image data can be changed, thereby optimizing the driving timing.

[0186] Further, the display panel further comprises a first switch SW1 and a second switch SW2, which can be referred to Figure 2aWhen SW1=1 and SW2=1, the control unit resets a sensor. Before the first switch closes, the control unit reads the reset data, denoted as Ref(n-1). When SW1=0 and SW2=0, the control unit performs a non-reset operation on the sensor. Before the second switch closes, the control unit reads the non-reset data, denoted as RO(n). The change in electrical signal is represented by RO(n)-Ref(n-1). This data processing method uses RO(n)-Ref(n-1) to represent the change in electrical signal caused by the light signal within the exposure time width. When the light signal magnitude or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, thereby achieving the detection of the light signal.

[0187] It should be noted that S21~S23 is an image refresh cycle. Before or after the start of this image refresh cycle, the image is refreshed once for each frame of the display panel, that is, the whole screen is refreshed and the image is displayed completely. In other words, before or after the start of this image refresh cycle, the first time period T1 and the second time period T2 are both display intervals.

[0188] Figure 15 This is a schematic diagram of the driving timing of the display panel provided in Embodiment 3 of this application; Figure 15 This is a schematic diagram of the driving timing of the first and second frames provided in Embodiment 3 of this application.

[0189] Combination Figures 15-16 As shown, in some embodiments, in the first to the nth frames, the odd-numbered or even-numbered rows of image data from the previous frame are refreshed using interlaced scanning; the even-numbered or odd-numbered rows of image data from the next frame are refreshed using interlaced scanning; wherein, the odd-numbered rows of image data from the previous frame and the even-numbered rows of image data from the next frame are combined into one frame for output; or, the even-numbered rows of image data from the previous frame and the odd-numbered rows of image data from the next frame are combined into one frame for output.

[0190] Combination Figures 15-16As shown, in actual work, the first frame of image enters the partial refresh mode, that is, in the frame of image, only the odd row image data corresponding to the target image is refreshed, and the even row image data is not refreshed. Therefore, in the first frame of image, the number of refresh is halved while the refresh rate remains unchanged, and the time originally used for refreshing the even row image data is used for sensing action, that is, the first sensing sN-1(sensing 1) stage action is completed in the second time period T2 of the first frame. The second frame of image enters the partial refresh mode, that is, in the frame of image, only the even row image data corresponding to the target image is refreshed, and the odd row image data is not refreshed. The first frame of image and the second frame of image are field images in the next frame of image. In this way, in each frame of image from the third frame to the nth frame, if the odd row image data corresponding to the target image is refreshed, the even row image data is not refreshed; otherwise, if the even row image data corresponding to the target image is refreshed, the odd row image data is not refreshed, and the second sensing sN-2(sensing 2) stage action is completed in the second time period T2 of the nth frame. Thereafter, the display panel returns to the mode of completing full-screen refresh once per frame. This scheme has a significant effect on the sensor integrated into a high refresh frequency display panel product. For a high refresh frequency product, the v-blanking time is shorter, and the empty frame mode directly leads to a halving of the screen image refresh rate, and the use of this scheme can not reduce the refresh rate of the display screen. It should be noted that Figure 15 Only the timing diagrams of the first frame of image and the second frame of image are shown, and the timing diagrams of other odd frame images are the same as that of the first frame of image, and the timing diagrams of other even frame images are the same as that of the second frame of image, which will not be described here.

[0191] Figure 17 A schematic diagram of the GOA circuit structure provided in Embodiment 3 of the present application.

[0192] As Figure 17 shown, the present application also provides a display panel, comprising a GOA circuit structure, and the GOA circuit structure comprises:

[0193] at least two scan driving units, each scan driving unit having a plurality of scan lines SL and sequentially outputting scan signals to the plurality of scan lines SL; and

[0194] a control unit 100 connected to each scan driving unit, for selectively controlling the operation of the at least two scan driving units to realize at least partial refresh processing of the image data of each frame of image.

[0195] The display panel further comprises a first switch (not shown in the figure), a second switch (not shown in the figure) and at least one sensor, and the control unit 100 is connected to the first switch, the second switch and the sensor 300 respectively. When SW1=1 and SW2=1 (i.e. both switches are in the open state), the control unit resets the sensor, and reads the reset data Ref(n-1) before the first switch is closed. When SW1=0 and SW2=0 (i.e. both switches are in the closed state), the control unit does not reset the sensor, and reads the non-reset data RO(n) before the second switch is closed. The change in the electrical signal is RO(n)-Ref(n-1). This data processing method represents the change in the electrical signal caused by the optical signal in this exposure time width. When the size of the optical signal changes or the exposure time width changes, the value of RO(n)-Ref(n-1) changes accordingly, so as to realize the detection of the optical signal.

[0196] In some embodiments, the at least two scan driving units include a first scan driving unit GOA_L21 and a second scan driving unit GOA_R21. The first scan driving unit GOA_L21 has a plurality of first scan lines; and the second scan driving unit GOA_R21 has a plurality of second scan lines. In the embodiments of the present application, the first scan lines are odd-numbered row scan lines, and the second scan lines are even-numbered row scan lines. In other embodiments, the first scan lines can be even-numbered row scan lines, and the second scan lines can be odd-numbered row scan lines.

[0197] When the control unit 100 controls the first scan driving unit to output a scan signal to the first scan lines, the second scan driving unit is in the closed state. When the control unit 100 controls the second scan driving unit to output a scan signal to the second scan lines, the first scan driving unit is in the closed state.

[0198] For example, in an embodiment, in combination with Figure 16As shown, the figure is a double-sided driving interlace structure, having two scan driving units, which are a first scan driving unit GOA_L21 and a second scan driving unit GOA_R21. In operation, for example, in the 1st frame image, the first sub-scan driving unit GOA_L21 normally works and sequentially outputs scan signals to the odd-numbered rows of scan lines corresponding thereto, so as to make the odd-numbered row Gate circuits corresponding thereto open in sequence, to complete image data update at the corresponding positions, while the second sub-scan driving unit GOA_R21 is in a closed state and does not work, so that the image data of the even-numbered rows is not updated. In the 2nd frame image, the second sub-scan driving unit GOA_R21 normally works and sequentially outputs scan signals to the even-numbered rows of scan lines corresponding thereto, so as to make the even-numbered row Gate circuits corresponding thereto open in sequence, to complete image data update at the corresponding positions, while the first sub-scan driving unit GOA_L21 is in a closed state and does not work, so that the image data of the odd-numbered rows is not updated. The odd-numbered row image data of the 1st frame image and the even-numbered row image data of the 2nd frame image are combined into one frame of image and output, and the 1st frame image and the 2nd frame image are field images in the next frame image. In this way, the subsequent images are alternately refreshed according to the refresh mode of the 1st frame and the 2nd frame, until the n-th frame image ends. In other words, in the odd-numbered frame image, the first sub-scan driving unit GOA_L21 normally works and sequentially outputs scan signals to the odd-numbered rows of scan lines corresponding thereto, so as to make the odd-numbered row Gate circuits corresponding thereto open in sequence, to complete image data update at the corresponding positions, while the second sub-scan driving unit GOA_R21 is in a closed state and does not work, so that the image data of the even-numbered rows is not updated. Conversely, in the even-numbered frame image, the second sub-scan driving unit GOA_R21 normally works and sequentially outputs scan signals to the even-numbered rows of scan lines corresponding thereto, so as to make the even-numbered row Gate circuits corresponding thereto open in sequence, to complete image data update at the corresponding positions, while the first sub-scan driving unit GOA_L21 is in a closed state and does not work, so that the image data of the odd-numbered rows is not updated.

[0199] Therefore, the embodiment of the present application adopts a new driving timing to optimize the driving timing, avoid time waste, and solve the interference problem between different driving timings in the multifunction integrated display panel, realize multifunction integration of the display panel, and meanwhile do not affect the display effect of the display panel.

[0200] In practical applications, the embodiment 2 and the embodiment 3 can be respectively applied in different scenarios. For example, for an application case requiring a shorter exposure time, the embodiment 3 can be used, that is, the 1 / 2 refresh mode is performed on the frames in the sensing period. For an application case requiring a longer exposure time, the embodiment 2 is more optimal, at this time, the sensing period occupies more frames, and the complete refresh mode can be used for the multiple frames in the exposure time, and the 1 / 2 refresh is not needed. Therefore, the embodiments of the present application can optimize the driving timing and avoid time waste.

[0201] In the above embodiments, the description of each embodiment has its own focus, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0202] The image refresh method of the display panel and the GOA circuit structure provided by the embodiments of the present application are described in detail above, and the principle and implementation manner of the present application are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the technical solutions and core ideas of the present application; the ordinary skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An image refresh method of a display panel, characterized by, The display panel comprises a control unit for receiving images and refreshing the images, the display panel having n frames of images, n>3, wherein the control unit is configured to receive each frame of images, the time of each frame of images comprising a first time period T1 and a second time period T2, and the image refreshing method comprises: performing local refresh processing on the image data of the first frame of images, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain an electrical signal change amount; sequentially performing at least local refresh processing on the image data of each frame of images from the second frame of images to the (n-1)th frame of images; and performing local refresh processing on the image data of the n-th frame of images.

2. The image refreshing method of the display panel according to claim 1, wherein in the step of sequentially performing at least local refresh processing on the image data of each frame of images from the second frame of images to the (n-1)th frame of images, in each frame of images from the second frame of images to the (n-1)th frame of images, in the first time period T1 and the second time period T2, the control unit is configured to read a display data; in the step of performing local refresh processing on the image data of the n-th frame of images, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain an electrical signal change amount.

3. The image refresh method of the display panel according to claim 1, wherein, The step of sequentially performing at least local refresh processing on the image data of each frame of images from the second frame of images to the (n-1)th frame of images comprises: performing local refresh processing on the image data of the second frame of images; sequentially performing at least local refresh processing on the image data of each frame of images from the third frame of images to the (n-2)th frame of images; performing local refresh processing on the image data of the (n-1)th frame of images.

4. The image refreshing method of the display panel according to claim 3, wherein in the step of performing local refresh processing on the image data of the second frame of images, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to read a blank frame; in the step of sequentially performing at least local refresh processing on the image data of each frame of images from the third frame of images to the (n-2)th frame of images, in each frame of images from the third frame of images to the (n-3)th frame of images, in the first time period T1 and the second time period T2, the control unit is configured to read a display data; in the step of performing local refresh processing on the image data of the (n-1)th frame of images, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to read a blank frame; in the step of performing local refresh processing on the image data of the n-th frame of images, in the first time period T1, the control unit is configured to read a display data, and in the second time period T2, the control unit is configured to obtain an electrical signal change amount.

5. The image refreshing method of the display panel according to claim 3 or 4, wherein In the step of performing partial refresh processing on the image data of the first frame image, the odd-numbered rows or even-numbered rows of the image data of the first frame image are refreshed in an interlaced scanning manner. In the step of performing partial refresh processing on the image data of the second frame image, the even-numbered rows or odd-numbered rows of the image data of the second frame image are refreshed in an interlaced scanning manner. In the step of performing at least partial refresh processing on the image data of each frame from the 3rd frame to the (n-2)th frame, the image data of each frame from the 3rd frame to the (n-2)th frame is fully refreshed in sequence; In the step of performing local refresh processing on the image data of the (n-1)th frame, the odd-numbered rows or even-numbered rows of the image data of the (n-1)th frame are refreshed in an interlaced scanning manner. In the step of performing local refresh processing on the image data of the nth frame image, the even-numbered rows or odd-numbered rows of the image data of the second frame image are refreshed in an interlaced scanning manner. Specifically, the odd-numbered rows of image data from the first frame and the even-numbered rows of image data from the second frame are combined into one frame for output; or, the even-numbered rows of image data from the first frame and the odd-numbered rows of image data from the second frame are combined into one frame for output; the odd-numbered rows of image data from the (n-1)th frame and the even-numbered rows of image data from the nth frame are combined into one frame for output; or, the even-numbered rows of image data from the (n-1)th frame and the odd-numbered rows of image data from the nth frame are combined into one frame for output.

6. The image refresh method for a display panel according to claim 1, characterized in that, In the step of performing at least partial refresh processing on the image data of each frame of the images from the 2nd frame to the (n-1)th frame, in each frame of the images from the 2nd frame to the (n-1)th frame, the control unit is used to read display data in the first time period T1, and in the second time period T2, the control unit reads an empty frame. In the step of performing partial refresh processing on the image data of the nth frame, during the first time period T1, the control unit reads display data, and during the second time period T2, the control unit acquires a change in an electrical signal.

7. The image refresh method for a display panel according to claim 6, characterized in that, In the first to the nth frame, The image data of the odd-numbered or even-numbered rows of the previous frame is refreshed using interlaced scanning. The even-numbered or odd-numbered rows of image data in the next frame are refreshed using interlaced scanning. Specifically, the odd-numbered rows of image data from the previous frame and the even-numbered rows of image data from the next frame are combined into one frame for output; or, the even-numbered rows of image data from the previous frame and the odd-numbered rows of image data from the next frame are combined into one frame for output.

8. The image refresh method of the display panel according to claim 2 or 4 or 6, wherein, The display panel also includes a first switch SW1 and a second switch SW2. When SW1=1 and SW2=1, the control unit resets a sensor, and reads reset data Ref(n-1) before the first switch is closed; When SW1=0 and SW2=0, the control unit does not reset the sensor, and reads non-reset data RO(n) before the second switch is closed; The change in the electrical signal is RO(n)-Ref(n-1).

9. A display panel comprising a GOA circuit structure, characterized in that, The GOA circuit structure comprises: at least two scan driving units, each scan driving unit having a plurality of scan lines and sequentially outputting scan signals to the plurality of scan lines; and a control unit connected to each scan driving unit and used to selectively control the at least two scan driving units to work to achieve at least partial refresh processing of image data of each frame of image; wherein the time of each frame of image comprises a first time period T1 and a second time period T2, the control unit is used to read display data in the first time period T1, and the control unit obtains a change in an electrical signal in the second time period T2.

10. The display panel of claim 9, wherein, Further comprising: a plurality of scan modules, each scan module comprising the at least two scan driving units, the at least two scan driving units comprising a first scan driving unit having a plurality of first scan lines; a second scan driving unit having a plurality of second scan lines; wherein the first scan lines are odd-numbered row scan lines, and the second scan lines are even-numbered row scan lines, or the first scan lines are even-numbered row scan lines, and the second scan lines are odd-numbered row scan lines; in each scan module, when the control unit controls the first scan driving unit to output scan signals to the first scan lines, the second scan driving unit is in a closed state; and when the control unit controls the second scan driving unit to output scan signals to the second scan lines, the first scan driving unit is in a closed state.

11. The display panel of claim 9, wherein, the at least two scan driving units comprise a first scan driving unit block and a second scan driving unit block, the first scan driving unit block comprises a first sub-scan driving unit having a plurality of first sub-scan lines; a second sub-scan driving unit having a plurality of second sub-scan lines; wherein the first sub-scan lines are odd-numbered row scan lines, and the second sub-scan lines are even-numbered row scan lines, or the first sub-scan lines are even-numbered row scan lines, and the second sub-scan lines are odd-numbered row scan lines; when the control unit controls the first sub-scan driving unit to output scan signals to the first sub-scan lines, the second sub-scan driving unit is in a closed state; when the control unit controls the second sub-scan driving unit to output scan signals to the second sub-scan lines, the first sub-scan driving unit is in a closed state; The second scan driving unit block comprises a third sub-scan driving unit and a fourth sub-scan driving unit, and each of the third sub-scan driving unit and the fourth sub-scan driving unit has a plurality of third sub-scan lines; The control unit controls the third sub-scan driving unit and the fourth sub-scan driving unit to output scan signals to the third sub-scan lines in sequence at the same time; When the control unit controls the first scan driving unit block to output scan signals to the scan lines corresponding to the first scan driving unit block, the second scan driving unit block is in an off state; When the control unit controls the second scan driving unit block to output scan signals to the scan lines corresponding to the second scan driving unit block, the first scan driving unit block is in an off state.

12. The display panel of claim 9, wherein, The at least two scan driving units comprise: a first scan driving unit having a plurality of first scan lines; a second scan driving unit having a plurality of second scan lines; The first scan lines are odd-numbered row scan lines, and the second scan lines are even-numbered row scan lines; or the first scan lines are even-numbered row scan lines, and the second scan lines are odd-numbered row scan lines; When the control unit controls the first scan driving unit to output scan signals to the first scan lines, the second scan driving unit is in an off state; When the control unit controls the second scan driving unit to output scan signals to the second scan lines, the first scan driving unit is in an off state.

Images