CN109377933B - Display panel driving method, display panel and display device - Google Patents
Display panel driving method, display panel and display device Download PDFInfo
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- CN109377933B CN109377933B CN201811604266.1A CN201811604266A CN109377933B CN 109377933 B CN109377933 B CN 109377933B CN 201811604266 A CN201811604266 A CN 201811604266A CN 109377933 B CN109377933 B CN 109377933B
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- display
- display panel
- driving circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
Abstract
The invention discloses a driving method of a display panel, the display panel and a display device, wherein the display panel comprises a display area, a first non-display area and a second non-display area, the display area surrounds the first non-display area, the first non-display area is provided with a through hole, the through hole penetrates through the display panel, the display panel also comprises a plurality of display driving signal lines, and part of the display driving signal lines penetrate through the first non-display area; outputting a grounding signal to at least part or all of the display driving signal lines penetrating through the first non-display area in a preset time period, so that when external static electricity enters the display panel through the through hole, the static electricity is timely released through the display driving signal lines, abnormal display caused by the fact that the static electricity invades the display panel is prevented, and damage caused by the fact that the static electricity invades the display panel is prevented; moreover, the grounding wire does not need to be designed separately on the periphery of the through hole, so that the frame glue falling risk caused by the fact that the grounding wire penetrates through the frame glue on the periphery of the through hole is avoided, and the good display performance of the display panel is ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel driving method, a display panel and a display device.
Background
With the development of display technology, narrow bezel and full-screen have become development trends.
The existing display panel usually digs a hole on a screen body to place and install a camera. However, no electrostatic protection structure is generally arranged around the hole-opening part, and a circle of floating silicon ring is arranged around the hole-digging part of the display panel for protection, so that electrostatic charges are blocked at the hole-digging part to prevent electrostatic from entering the display panel; and the partial display panel adopts a grounding wire designed at the edge of the hole digging area, and static electricity is led out of the display panel through the frame glue penetrating through the periphery of the hole digging area.
However, the floating silicon ring structure has limited protection capability and cannot lead out electrostatic charges, and external electrostatic charges may still intrude into the panel from the hole digging part, so that an electrostatic discharge failure point on the panel occurs, the display effect is affected, and even the panel is irreparably damaged; the frame adhesive penetrating through the periphery of the hole digging region through the grounding wiring can cause the frame adhesive to have the risk of falling off, and finally the performance of the display panel can be influenced.
Disclosure of Invention
The invention provides a driving method of a display panel, the display panel and a display device, which are used for enhancing the electrostatic protection capability of the display panel with a hole, ensuring a good display effect and avoiding damage to the display panel caused by static entering the display panel from the hole digging area.
In a first aspect, an embodiment of the present invention provides a driving method for a display panel, where the display panel includes a display area, a first non-display area, and a second non-display area, the display area surrounds the first non-display area, the first non-display area is provided with a through hole, the through hole penetrates through the display panel, the display panel further includes a plurality of display driving signal lines, and a part of the display driving signal lines penetrate through the first non-display area; the driving method includes: and outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area in a preset time period.
In a second aspect, an embodiment of the present invention further provides a display panel, which can be driven by the driving method of the display panel provided in the first aspect.
In a third aspect, an embodiment of the present invention further provides a display device, where the display device includes the display panel provided in the second aspect.
The invention provides a driving method of a display panel, the display panel and a display device, wherein the display panel comprises a display area, a first non-display area and a second non-display area, the display area surrounds the first non-display area, the first non-display area is provided with a through hole, the through hole penetrates through the display panel, the display panel also comprises a plurality of display driving signal lines, and part of the display driving signal lines penetrate through the first non-display area; through in the preset time quantum, at least to passing through the partial or whole display drive signal line output ground signal in first non-display area to when external static enters into display panel through the perforating hole, in time through displaying drive signal line with static discharge, prevent that static from invading the display panel and bringing and show unusually, guarantee display panel's normal demonstration, and prevent that static from invading the damage that display panel brought for display panel. In addition, by the scheme of outputting the grounding signal to the display driving signal line in the preset time period, a grounding wire does not need to be separately designed on the periphery of the through hole, the frame adhesive falling risk caused by the fact that the grounding wire penetrates through the frame adhesive on the periphery of the through hole in the prior art is avoided, and the good display performance of the display panel is ensured.
Drawings
Fig. 1 is a flowchart of a driving method of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a flowchart of another driving method of a display panel according to an embodiment of the present invention;
FIG. 4 is a timing diagram illustrating an operation of another driving method for a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating another driving method of a display panel according to an embodiment of the present invention;
FIG. 7 is a timing diagram illustrating an operation of another driving method for a display panel according to an embodiment of the present invention;
FIG. 8 is a timing diagram illustrating an operation of another driving method for a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 10 is a timing diagram illustrating an operation of another driving method for a display panel according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 12 is a timing diagram illustrating an operation of another driving method of a display panel according to an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 14 is a timing diagram illustrating an operation of another driving method of a display panel according to an embodiment of the present invention;
FIG. 15 is a timing diagram illustrating an operation of another driving method of a display panel according to an embodiment of the present invention;
FIG. 16 is a timing diagram illustrating an operation of another driving method of a display panel according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background, display panels typically include a cutout area for placement and mounting of a camera. In the process of preparation or transportation of the display panel, friction inevitably exists, which causes static electricity to be generated, the generated static electricity easily enters the display panel from the hole digging area of the display panel, the existing display panel cannot release the static electricity by arranging a circle of floating silicon rings around the hole digging area for protection, and the static electricity still enters the display panel through the hole digging area, which affects the display effect of the display panel. The prior art further includes a scheme of designing a ground trace at the edge of the hole digging area and guiding static electricity out of the display panel through the ground trace, however, the ground trace needs to penetrate through the sealant around the hole digging area, so that the sealant may have a risk of falling off, and the performance of the display panel may also be affected. In view of the foregoing problems, embodiments of the present invention provide a driving method for a display panel, so as to discharge static electricity entering the display panel from a hole digging region on the premise of ensuring the display effect and good performance of the display panel.
Fig. 1 is a flowchart of a driving method of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, where the display panel shown in fig. 2 can be driven by the driving method of the display panel shown in fig. 1, and referring to fig. 2, the display panel includes a display area 110, a first non-display area 120, and a second non-display area 130, the display area 110 surrounds the first non-display area 120, the first non-display area 120 is provided with a through hole 121, the through hole 121 penetrates through the display panel, the display panel further includes a plurality of display driving signal lines, and a part of the display driving signal lines penetrates through the first non-display area 120;
referring to fig. 1 and 2, a driving method of a display panel includes:
The display driving lines may be data lines (D1, D2, and D3 … … in fig. 1) or scan lines (G1, G2, and G3 … … in fig. 1), the plurality of scan lines may be disposed along the first direction x, the plurality of data lines may be disposed along the second direction y, and the data lines and the scan lines intersect to define a plurality of pixel units. When the display panel displays the images, for each frame of display image, scanning signals are required to be sequentially input to pixels of each row through scanning lines, and data signals are sequentially written into the pixels through data lines, so that the display panel can normally display each frame of image. By outputting the ground signal to at least a part or all of the display driving signal lines, i.e., the scan lines and/or the data lines, passing through the first non-display region 120 in a preset time period, when external static electricity enters the display panel through the through holes 121, the static electricity is timely discharged through the scan lines and/or the data lines, display abnormality caused by static electricity invading into the display panel is prevented, normal display of the display panel is ensured, and damage caused by static electricity invading into the display panel is prevented. In addition, by the scheme of outputting the ground signal to the display driving signal line in the preset time period, a ground trace does not need to be separately designed on the periphery of the through hole 121, so that the frame adhesive falling risk caused by the fact that the ground trace penetrates through the frame adhesive on the periphery of the through hole 121 in the prior art is avoided, and the good display performance of the display panel is ensured.
Optionally, the preset time period is a frame-to-frame time period and/or a touch time period. Because the time slot between frames is in the holding stage of the display picture, and the storage capacitor in the pixel circuit has the charge holding function, the scanning signal is not required to be output to the scanning line at the moment, and the data signal is not required to be output to the data line, therefore, the grounding signal can be output to the scanning line and/or the data line in the time slot between frames, the static electricity entering the display panel can be released in time on the premise of not influencing the display effect, and the normal display of the display panel is ensured. In a relatively short time period, the touch control time period is also a holding period of one frame of display image, and the grounding signal is output to the scanning line and/or the data line, so that the static electricity entering the display panel can be released in time on the premise of not influencing the display effect, and the normal display of the display panel is ensured.
The above is the core idea of the present invention, and the following description is continued with reference to the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
With reference to fig. 1, the display driving signal lines are scanning lines, the display panel further includes a scanning driving circuit 131 disposed in the second non-display region 130, and the scanning driving circuit 131 is electrically connected to each scanning line;
fig. 3 is a flowchart of another driving method for a display panel according to an embodiment of the present invention, and fig. 4 is a timing chart of another driving method for a display panel according to an embodiment of the present invention, which corresponds to the driving method shown in fig. 3. Referring to fig. 3, the driving method includes:
in step 200, in a preset time period, the scan driving circuit 131 outputs a ground signal to the scan lines passing through the first non-display area 120 or all the scan lines.
Referring to fig. 1 and 4, the scan lines in the first region 140 pass through the first non-display region 120, and Gn +1 in fig. 4 may correspond to the scan signals output by the scan driving circuit 131 to the scan lines in the first region 140, and may output the ground signal to the scan lines in the first region 140 in a preset time period T, i.e., a time period between frames and/or a touch time period, so as to discharge static electricity around the through holes 121 of the display panel, prevent external static electricity from entering the display panel through the through holes 121 of the display panel to cause display abnormality of the display panel, and prevent the display panel from being irreparably damaged due to static electricity entering the display panel, thereby ensuring a good display effect and prolonging a service life of the display panel. In fig. 4, Gn and Gn +1 may also output ground signals to all the scan lines corresponding to the scan signals output by the scan driving circuit 131, and in a preset time period T, further perform electrostatic discharge on the entire display panel, further prevent external static from entering the display panel through the through hole 121 of the display panel to cause abnormal display, and prevent the display panel from being irreparably damaged due to the static entering the display panel, thereby ensuring a good display effect and prolonging the service life of the display panel. In addition, by outputting the grounding signal to the scanning line or all the scanning lines passing through the first non-display region 120 in the preset time period T, a grounding wire does not need to be separately designed on the periphery of the through hole 121, so that the frame adhesive falling risk caused by the fact that the grounding wire penetrates through the frame adhesive on the periphery of the through hole 121 in the prior art is avoided, and the good display performance of the display panel is ensured.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 5, alternatively, the display driving lines are scanning lines and data lines; the display panel further includes a scan driving circuit 131 and a data driving circuit 132 disposed in the second non-display region 130, the scan driving circuit 131 is electrically connected to each scan line, and the data driving circuit 132 is electrically connected to each data line;
fig. 6 is a flowchart of another driving method of a display panel according to an embodiment of the present invention, and referring to fig. 5, the driving method of the display panel includes:
in step 300, the data driving circuit 132 outputs a ground signal to the data line or all the data lines passing through the first non-display area 120 for a preset time period.
Fig. 7 is an operation timing diagram of another driving method of a display panel according to an embodiment of the present invention, which corresponds to a situation where the data driving circuit 132 outputs a ground signal to the data lines or all the data lines passing through the first non-display area 120. Referring to fig. 5 and 7, the data lines passing through the first non-display area 120 are located in the second area 150, and Dn in fig. 7 represents a scan signal output by the data driving circuit 132 to the data lines or all data lines of the display panel in the second area 150, and the data driving circuit 132 outputs a ground signal to the data lines or all data lines passing through the first non-display area 120 in a preset time period T, so that when static electricity enters the display panel from the through holes 121, the static electricity can be timely discharged by the data lines or all data lines passing through the first display area 110, thereby preventing abnormal display and damage of the display panel caused by the static electricity entering the display panel from the through holes 121, and enhancing the service life of the display panel. In addition, by outputting the ground signal to the data line or all the data lines passing through the first non-display region 120 in the preset time period T, the data driving circuit 132 does not need to separately design a ground trace on the periphery of the through hole 121, thereby avoiding the risk of frame adhesive falling caused by the ground trace passing through the frame adhesive on the periphery of the through hole 121 in the prior art, and ensuring good display performance of the display panel.
On the basis of the above scheme, optionally, outputting the ground signal to at least a part or all of the display driving signal lines passing through the first non-display area 120 includes:
the scan driving circuit 131 is controlled to be turned off, and the data driving circuit 132 outputs a ground signal to the data lines or all the data lines passing through the first non-display area 120.
Fig. 8 is a timing chart of another driving method of the display panel according to the embodiment of the invention, which corresponds to the driving method that the scan driving circuit 131 is turned off and the data driving circuit 132 outputs the ground signal to the data line or all the data lines passing through the first non-display area 120, and the timing chart can also be used for driving the display panel shown in fig. 5. Referring to fig. 5 and 8, wherein Dn denotes a data line or all data lines passing through the first non-display area 120. The second non-display area 130 of the display panel is provided with a driving chip 133 therein, the data driving circuit 132 may be integrated on the driving chip 133, the driving chip 133 may be connected to the scan driving circuit 131 through a clock signal output terminal CKV, the scan driving circuit 131 may include a plurality of shift registers, the driving chip 133 may control the scan driving circuit 131 to be turned off through the clock signal output terminal CKV in a preset time period T, the data driving circuit 132 outputs a ground signal to the data line or all the data lines passing through the first non-display area 120, so as to ensure that the ground signal output by the data driving circuit 132 to the data line or all the data lines of the first non-display area 120 is not written into the pixels, and ensure that the display panel releases static electricity entering the display panel on the premise of displaying a normal picture.
Fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 9, the display driving signal line includes a data line, the display panel further includes a data driving circuit 132 disposed in the second non-display area 130, a first test terminal DO, a second test terminal DE, a first ground terminal END1, a second ground terminal END2, and a plurality of first transistors, and the data driving circuit 132 is electrically connected to each data line; a first pole of each first transistor is electrically connected to one data line, a second pole of the first transistor electrically connected to the odd-numbered column data line is electrically connected to the first test terminal DO, a second pole of the first transistor electrically connected to the even-numbered column data line is electrically connected to the second test terminal DE, and the first test terminal DO and the second test terminal DE are electrically connected to the first ground terminal END1 and the second ground terminal END2, respectively;
fig. 10 is a timing diagram of operations of another driving method for a display panel according to an embodiment of the present invention, where the timing diagram is used to drive the display panel shown in fig. 9, and referring to fig. 9 and 10, the driving method for the display panel includes:
and outputting a control signal to the grid electrode of the first transistor in a preset time period T to control the first transistor to be conducted.
The first test terminal DO and the second test terminal DE may be test terminals of the display panel during VT detection, the first transistor is included in the VT detection circuit 134, odd-numbered columns of data lines of the display panel are respectively connected to the first test terminal DO through a first transistor T11, even-numbered columns of data lines of the display panel are respectively connected to the second test terminal DE through a second transistor T12, and the first test terminal DO and the second test terminal DE are respectively connected to the first ground terminal END1 and the second ground terminal END2, so that the ground signal can be controlled to be input to the data lines by controlling the conduction of the first transistor. Referring to fig. 9 and 10, taking the first transistors as P-type transistors as an example, EN represents a control signal output to the gates of the first transistors, where the control signal may be provided by the driving chip 133, and outputs a low level signal to the gates of the first transistors in a preset time period T, each of the first transistors is turned on, and each of the data lines of the display panel inputs a ground signal, so that static electricity in the display panel can be discharged through the data line, and abnormal display and damage of the display panel caused by static electricity entering the display panel from the through hole 121 are prevented. In addition, the display panel provided in the present embodiment may further include an FPC160, and the first ground terminal END1 and the first ground terminal END2 may be disposed on the FPC 160.
Fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 11, the display driving signal lines further include scanning lines, the display panel further includes a scanning driving circuit 131 and a multi-path selecting unit 135, the scanning driving circuit 131 is disposed in the second non-display area 130, the scanning driving circuit 131 is electrically connected to each scanning line, and the data driving circuit 132 is electrically connected to each data line through the multi-path selecting unit 135;
fig. 12 is a timing diagram of operations of another driving method for a display panel according to an embodiment of the present invention, where the timing diagram can be used to drive the display panel shown in fig. 11, and the driving method for the display panel includes:
in the preset time period T, a control signal is output to the gate of the first transistor, the multiplexing unit 135 is controlled to be turned off while the first transistor is controlled to be turned on, and the scan driving circuit 131 is controlled to be turned off.
Referring to fig. 11, the multiplexing unit 135 may include a plurality of second transistors T2 electrically connected to the data lines in a one-to-one correspondence, a first pole of each of the second transistors T2 is connected to one data line, a second pole of each of the second transistors T2 is simultaneously electrically connected to one output terminal of the data driving circuit 132, and an on/off state of the multiplexing unit 135 may be controlled by a control terminal CKH of the driving chip 133. By providing the multiplexing unit 135, the number of output terminals of the data driving circuit 132 can be reduced, the data driving circuit 132 can be integrated on the driving chip 133, and the number of output terminals of the driving chip 133 can be reduced when the data driving circuit 132 is integrated on the driving chip 133. Fig. 11 schematically illustrates an example in which the second poles of three second transistors T2 are connected to the output terminal of the same data driving circuit 132. The multiplexer unit 135 is used to control the data driving circuit 132 to output the data signal to the data line, taking the first transistor as a P-type transistor and the second transistor T2 in the multiplexer unit 135 as a P-type transistor for example, during the preset time period T of performing electrostatic discharge, a high level signal can be output through the output terminal CKH of the driving chip 133, the multiplexer unit 135 is controlled to be turned off, and the scan driving circuit 131 is controlled to be turned off through the clock signal terminal CKV, so that the data signal is not written into the pixel during the preset time period T, and the display image can be maintained during the preset time period T. The first test terminal DO and the second test terminal DE are always connected to the first ground terminal END1 and the second ground terminal END2, a low level signal, specifically, an EN signal in fig. 12, is input to the gate of the first transistor, so that the first transistor is turned on, the first ground terminal END1 and the second ground terminal END2 input a ground signal to the data line, static electricity in the display panel is discharged through the data line, abnormal display and damage of the display panel caused by static electricity entering the display panel through the through hole 121 are prevented, and the service life of the display panel is prolonged.
Fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 13, the display panel is a touch display panel; the display driving lines are scanning lines and data lines; the display panel further includes a scan driving circuit 131 and a data driving circuit 132 disposed in the second non-display area 130, and further includes a touch driving circuit 136 disposed in the second non-display area 130, a plurality of touch electrodes 170 disposed in the display area 110, each touch electrode 170 being electrically connected to the touch driving circuit 136 through at least one touch signal line (C1, C2 … … in fig. 13); the driving method of the display panel comprises the following steps:
while the touch driving circuit 136 outputs the touch detection signal to the touch electrode 170 through the touch signal line, the scan driving circuit 131 outputs a ground signal at least to the scan line or all the scan lines passing through the first non-display area 120 and/or the data driving circuit 132 outputs a ground signal at least to the data line or all the data lines passing through the first non-display area 120.
The touch electrode 170 may be a touch electrode formed by multiplexing a common electrode.
The working period of the touch display panel can be divided into a display stage and a touch stage, in the touch stage, the touch driving circuit 136 outputs a touch detection signal to the touch electrode 170 through the touch signal line, during which the display screen is in a hold stage, and it is not necessary to input a scan signal to the scan line and it is not necessary to input a ground signal to the data line, so that during the period when the touch driving circuit 136 outputs the touch detection signal to the touch electrode 170, the scan driving circuit 131 can output a ground signal at least to the scan line or all the scan lines passing through the first non-display area 120 and/or the data driving circuit 132 can output a ground signal at least to the data line or all the data lines passing through the first non-display area 120 to discharge static electricity to the display panel, thereby preventing abnormal display and damage of the display panel caused by static electricity entering the display panel through the through hole 121.
Fig. 14 is a timing diagram of another driving method of a display panel according to an embodiment of the present invention, where the timing diagram is used to drive the display panel shown in fig. 13, and referring to fig. 13 and fig. 14, on the basis of the above scheme, optionally, during a period that the touch driving circuit 136 outputs a touch detection signal (specifically, Cn in fig. 14) to the touch electrode 170 through the touch signal line, that is, during a period T in fig. 14, the scan driving circuit 131 outputs a periodic ground signal at least to the scan lines passing through the first non-display area 120 or all the scan lines, specifically, see Gn and Gn +1 in fig. 14, where the frequency of the periodic ground signal is equal to the frequency of the touch detection signal.
The high level of the touch detection signal corresponds to the high level of the scan signal, and the frequency of the periodic ground signal output by the scan driving circuit 131 is equal to the frequency of the touch detection signal, so that not only can static electricity in the display panel be released, but also the coupling capacitance of the scan line and the touch electrode 170 layer can be reduced, the coupling between the scan line and the touch electrode 170 layer can be reduced, and the touch effect is better.
Fig. 15 is a timing diagram of another driving method of a display panel according to an embodiment of the present invention, where the timing diagram is used to drive the display panel shown in fig. 13, and referring to fig. 13 and fig. 15, optionally, during a period that the touch driving circuit 136 outputs a touch detection signal (specifically, Cn in fig. 15) to the touch electrode 170 through the touch signal line, the data driving circuit 132 outputs a periodic ground signal to at least the data line or all the data lines passing through the first non-display area 120, specifically, Dn in fig. 15, where the frequency of the periodic ground signal is equal to the frequency of the touch detection signal.
The frequency of the periodic ground signal output by the data driving circuit 132 is equal to the frequency of the touch detection signal, so that the coupling capacitance between the data line and the touch electrode 170 layer can be reduced, the coupling between the data line and the touch electrode 170 layer can be reduced, and the touch effect is better.
Fig. 16 is an operation timing diagram of another driving method of a display panel according to an embodiment of the present invention, where the operation timing diagram can be used to drive the display panel shown in fig. 13, and referring to fig. 13 and fig. 16, optionally, during the touch driving circuit 136 outputs a touch detection signal (specifically, see Cn in fig. 16) to the touch electrode 170 through the touch signal line, the scan driving circuit 131 always outputs a ground signal (see Gn and Gn +1 in fig. 16) to at least a scan line or all scan lines passing through the first non-display area 120 and/or the data driving circuit 132 always outputs a ground signal (see Dn in fig. 16) to at least a data line or all data lines passing through the first non-display area 120. By the scheme, during the period that the touch driving circuit 136 outputs the touch detection signal, the static electricity of the display panel is released through the scanning lines and/or the data lines all the time, so that the static electricity entering the display panel is released as much as possible, abnormal display and damage of the display panel caused by the static electricity entering the display panel from the through hole 121 are prevented, and the service life of the display panel is prolonged.
Fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 17, the display device 10 may include a display panel 1000 according to any embodiment of the present invention. The display device 10 may be a mobile phone shown in fig. 17, and may also be a computer, a tablet, an intelligent wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. The driving method of the display panel is characterized in that the display panel comprises a display area, a first non-display area and a second non-display area, the display area surrounds the first non-display area, the first non-display area is provided with a through hole, the through hole penetrates through the display panel, the display panel further comprises a plurality of display driving signal lines, and part of the display driving signal lines penetrate through the first non-display area;
the driving method includes:
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display region for a preset period of time to discharge static electricity when external static electricity enters the display panel through the through holes.
2. The method according to claim 1, wherein the preset time period is a frame-to-frame time period and/or a touch time period.
3. The method according to claim 1, wherein the display driving signal lines are scanning lines, the display panel further comprises a scanning driving circuit disposed in the second non-display region, the scanning driving circuit being electrically connected to each of the scanning lines;
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area, including:
the scan driving circuit outputs a ground signal to the scan lines or all the scan lines passing through the first non-display region.
4. The method for driving a display panel according to claim 1, wherein the display driving signal lines are scanning lines and data lines; the display panel further comprises a scanning driving circuit and a data driving circuit which are arranged in the second non-display area, the scanning driving circuit is electrically connected with each scanning line, and the data driving circuit is electrically connected with each data line;
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area, including:
the data driving circuit outputs a ground signal to the data line or all of the data lines passing through the first non-display region.
5. The method for driving a display panel according to claim 4, wherein outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display region comprises:
and controlling the scanning driving circuit to be closed, wherein the data driving circuit outputs a grounding signal to the data line passing through the first non-display area or all the data lines.
6. The method for driving a display panel according to claim 1, wherein the display driving signal line includes a data line, the display panel further includes a data driving circuit, a first test terminal, a second test terminal, a first ground terminal, a second ground terminal, and a plurality of first transistors, which are provided in the second non-display region, the data driving circuit being electrically connected to each of the data lines; a first pole of each of the first transistors is electrically connected to one of the data lines, a second pole of the first transistor electrically connected to the data lines in odd-numbered columns is electrically connected to the first test terminal, a second pole of the first transistor electrically connected to the data lines in even-numbered columns is electrically connected to the second test terminal, and the first test terminal and the second test terminal are electrically connected to the first ground terminal and the second ground terminal, respectively;
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area, including:
and outputting a control signal to the grid electrode of the first transistor to control the first transistor to be conducted.
7. The method according to claim 6, wherein the display driving signal lines further include scanning lines, the display panel further includes a scanning driving circuit and a multiplexing unit, the scanning driving circuit is electrically connected to the scanning lines, and the data driving circuit is electrically connected to the data lines through the multiplexing unit;
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area, including:
and outputting a control signal to the grid electrode of the first transistor, controlling the conduction of the first transistor, controlling the closing of the multi-path selection unit, and controlling the closing of the scanning driving circuit.
8. The method for driving a display panel according to claim 1, wherein the display panel is a touch display panel; the display driving lines are scanning lines and data lines; the display panel further comprises a scanning driving circuit and a data driving circuit which are arranged in the second non-display area, and further comprises a touch driving circuit which is arranged in the second non-display area, and a plurality of touch electrodes which are arranged in the display area, wherein each touch electrode is electrically connected with the touch driving circuit through at least one touch signal line;
outputting a ground signal to at least a part or all of the display driving signal lines passing through the first non-display area, including:
during the period that the touch driving circuit outputs the touch detection signal to the touch electrode through the touch signal line, the scanning driving circuit at least outputs a ground signal to the scanning line or all the scanning lines passing through the first non-display area and/or the data driving circuit at least outputs a ground signal to the data line or all the data lines passing through the first non-display area.
9. The method according to claim 8, wherein during the period when the touch driving circuit outputs the touch detection signal to the touch electrode via the touch signal line, the scan driving circuit outputs a periodic ground signal to at least the scan line or all the scan lines passing through the first non-display area, and a frequency of the periodic ground signal is equal to a frequency of the touch detection signal.
10. The method according to claim 9, wherein while the touch driving circuit outputs the touch detection signal to the touch electrode via the touch signal line, the data driving circuit outputs a periodic ground signal to at least the data line or all the data lines passing through the first non-display area, and a frequency of the periodic ground signal is equal to a frequency of the touch detection signal.
11. The method according to claim 8, wherein during the touch driving circuit outputs the touch detection signal to the touch electrode via the touch signal line, the scan driving circuit always outputs a ground signal to at least the scan line or all the scan lines passing through the first non-display region and/or the data driving circuit always outputs a ground signal to at least the data line or all the data lines passing through the first non-display region.
12. A display panel characterized by being applied to the driving method of the display panel according to any one of claims 1 to 11.
13. A display device characterized by comprising the display panel according to claim 12.
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| TWI690914B (en) * | 2019-05-17 | 2020-04-11 | 友達光電股份有限公司 | Pixel array substrate |
| CN112289243A (en) | 2020-11-30 | 2021-01-29 | 上海天马有机发光显示技术有限公司 | Display panel, preparation method thereof and display device |
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