CN109686304B - Display panel and driving method thereof - Google Patents
Display panel and driving method thereof Download PDFInfo
- Publication number
- CN109686304B CN109686304B CN201910127263.1A CN201910127263A CN109686304B CN 109686304 B CN109686304 B CN 109686304B CN 201910127263 A CN201910127263 A CN 201910127263A CN 109686304 B CN109686304 B CN 109686304B
- Authority
- CN
- China
- Prior art keywords
- voltage
- data signal
- signal voltage
- electrically connected
- pixels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The invention provides a display panel, which comprises a substrate and a pixel driving unit arranged on the substrate; the pixel driving unit comprises a first thin film transistor, a second thin film transistor and a driving thin film transistor, wherein the first thin film transistor is electrically connected with the first scanning line and the first data line; the second thin film transistor is electrically connected with the second scanning line and a reference voltage line; the driving thin film transistor is electrically connected with a voltage supply line and the organic light emitting diode; the drain electrode of the first thin film transistor, the drain electrode of the driving thin film transistor, the anode of the organic light emitting diode and the source electrode of the second thin film transistor are connected to a first node; in the nth frame, the data signal voltage provided by the first data line is a positive voltage, and the reference voltage provided by the reference voltage line is a voltage which is less than the data signal voltage and greater than or equal to 0; in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage, n being a positive integer.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a driving method thereof.
Background
Currently, in a pixel driving circuit of a display panel, Vref (reference voltage) of all pixels is a uniform value, generally 0V or 1V, Vdata (data signal voltage) is written into different voltage values according to gray scale values required to be displayed on a picture, and the data signal voltage written into a gate of a thin film transistor each time in the driving method is a positive voltage between 0 and 15V.
However, when the same picture is displayed for a long time at a certain part of the display picture of the display panel, such as a television logo, part of the carriers gather at the bottom of the channel and cannot be recovered, so that the threshold voltage is shifted forward, and the carriers in other areas of the picture are recovered in time, so that marks of the previous picture are left in the next display picture, and afterimages are generated, and the display quality is affected.
Disclosure of Invention
The invention provides a display panel, which aims to solve the technical problem that when a certain part in a display picture displays the same picture for a long time, threshold voltage is subjected to forward drift, and afterimages are easy to generate.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a display panel comprises a substrate, a plurality of pixels arranged on the substrate and distributed in an array manner, and pixel driving units which correspond to the pixels one by one and are electrically connected with the pixels; the pixel driving unit includes:
the scanning device comprises a first scanning line and a second scanning line which are transversely arranged;
a first data line arranged longitudinally;
an organic light emitting diode;
a first thin film transistor electrically connected to the first scan line and the first data line;
the second thin film transistor is electrically connected with the second scanning line and a reference voltage line;
the driving thin film transistor comprises a grid electrode electrically connected with the drain electrode of the first thin film transistor, a drain electrode electrically connected with the voltage supply line, and a source electrode electrically connected with the anode of the organic light emitting diode and the second thin film transistor;
in the nth frame, the data signal voltage provided by the first data line is a positive voltage, and the reference voltage provided by the reference voltage line is a voltage which is less than the data signal voltage and greater than or equal to 0; in the (n + 1) th frame, the data signal voltage is less than or equal to 0, the reference voltage is a negative voltage less than the data signal voltage, and n is a positive integer.
Further, in the nth frame, the voltage difference between the data signal voltage and the reference voltage is a, and in the (n + 1) th frame, the voltage difference between the data signal voltage and the reference voltage is b, where a is equal to b.
Further, in the nth frame, the data signal voltage is less than or equal to 7.5 volts, and the reference voltage is 0.
Further, in the (n + 1) th frame, the data signal voltage is in a range from-7.5 to 0, and the reference voltage is-7.5 volts.
Furthermore, in the pixel driving unit electrically connected to the mth row of pixels in the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the mth row of pixels in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; m is a positive integer.
Furthermore, in the pixel driving unit electrically connected to the pixels in the kth row in the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the (k + 1) th row, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the kth row in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the (k + 1) th column of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; k is a positive integer.
Furthermore, the pixel driving unit further includes a capacitor, one end of the capacitor is electrically connected to the drain of the first thin film transistor, and the other end of the capacitor is connected to the source of the driving thin film transistor, the drain of the second thin film transistor, and the anode of the organic light emitting diode at the first node.
The invention also provides a driving method of the display panel, during the nth frame, in the pixel driving unit which corresponds to the pixels one by one and is electrically connected, the data signal voltage provided by the first data line is a positive voltage, and the reference voltage provided by the reference voltage line is a voltage which is less than the data signal voltage and is more than or equal to 0; in the (n + 1) th frame, the data signal voltage provided by the first data line is less than or equal to 0, the reference voltage provided by the reference voltage line is a negative voltage less than the data signal voltage, and n is a positive integer.
Furthermore, in the pixel driving unit electrically connected to the mth row of pixels in the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the mth row of pixels in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; m is a positive integer.
Furthermore, in the pixel driving unit electrically connected to the pixels in the kth row in the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the (k + 1) th row, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the kth row in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the (k + 1) th column of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; k is a positive integer.
The invention has the beneficial effects that: in the display of two adjacent frames, during the nth frame, the first data line Date gives positive voltage, the reference voltage line gives 0V or positive voltage, the first data line Date of the (n + 1) th frame gives negative voltage or 0V, the reference voltage line gives negative voltage, thus when the thin film transistor is driven, the pressure suffered by the grid can be relieved, thereby when the same picture is displayed for a long time, the forward drift of the threshold voltage is prevented, and the carriers in other areas of the picture are timely restored, thereby preventing the generation of afterimages.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a pixel driving unit according to an embodiment of the present invention;
FIG. 3 is a timing diagram of driving a display panel according to an embodiment of the invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention aims to solve the technical problems that when a certain part of a display picture displays the same picture for a long time, threshold voltage is subjected to forward drift, afterimages are easy to generate, and the display quality is influenced in the conventional display panel. The present invention can solve the above problems.
The first embodiment is as follows:
a display panel, as shown in fig. 1, includes a substrate 10, a plurality of pixels 20 disposed on the substrate 10 and distributed in an array, and a pixel driving module 30, wherein the driving manner of the display panel is frame inversion.
The pixel driving module 30 includes pixel driving units corresponding to the pixels 20 one by one and electrically connected to the pixels; the display panel has a display region where the pixels 20 are disposed and a non-display region where no image is displayed and a line or circuit unit is formed on the display panel, and the pixel driving unit is disposed.
As shown in fig. 2, the pixel driving unit includes first and second Scan lines Scan1 and Scan2 disposed in a transverse direction, a first data line Date disposed in a longitudinal direction, a reference voltage line, a voltage supply line, an organic light emitting diode OLED, a first thin film transistor ST1, a second thin film transistor ST2, and a driving thin film transistor DT.
A gate of the first thin film transistor ST1 is electrically connected to the first Scan line Scan1, and a source of the first thin film transistor ST1 is electrically connected to the first data line Date; the first Scan line Scan1 provides a first Scan signal voltage G1, and the first data line Date provides a data signal voltage Vdate.
The gate of the second thin film transistor ST2 is electrically connected to the second Scan line Scan2, the source of the second thin film transistor ST2 is electrically connected to a reference voltage line, the second Scan line Scan2 provides the second Scan signal voltage G2, and the reference voltage line provides the reference voltage Vref.
The grid electrode of the driving thin film transistor DT is electrically connected with the drain electrode of the first thin film transistor ST1, the drain electrode of the driving thin film transistor DT is electrically connected with the voltage supply line, and the source electrode of the driving thin film transistor DT is electrically connected with the anode of the organic light emitting diode OLED; the voltage supply line supplies a high potential voltage Vdd to the source of the driving thin film transistor DT.
The cathode of the organic light emitting diode OLED is electrically connected with a low-potential voltage line, and the low-potential voltage line provides low-potential voltage Vss; the driving thin film transistor DT supplies a driving current to the organic light emitting diode OLED during a light emitting period of the organic light emitting diode OLED, and the driving thin film transistor DT controls an amount of current flowing into the organic light emitting diode OLED according to a voltage difference between a source electrode and a gate electrode of the driving thin film transistor DT.
In the light emitting stage of the organic light emitting diode OLED, the first Scan line Scan1 and the second Scan line Scan2 both provide a high voltage, and at this time, the first thin film transistor ST1 and the second thin film transistor ST2 are both turned on, the data signal voltage Vdate provided by the first data line Date is provided to the gate electrode of the driving thin film transistor DT, and at this time, the data signal voltage Vdate is the high voltage, and the driving thin film transistor DT is turned on.
The pixel driving unit further includes a capacitor C1, wherein one end of the capacitor C1 is electrically connected to the drain of the first thin film transistor ST1, and the other end is connected to the source of the driving thin film transistor DT, the drain of the second thin film transistor ST2, and the anode of the organic light emitting diode OLED, which are connected to the first Node.
Specifically, as shown in fig. 2 and 3, in the nth frame, the data signal voltage Vdate provided by the first data line Date is a positive voltage, and the reference voltage Vref provided by the reference voltage line is a voltage that is less than the data signal voltage Vdate and is greater than or equal to 0; in the (n + 1) th frame, the data signal voltage Vdate is less than or equal to 0, the reference voltage Vref is a negative voltage less than the data signal voltage Vdate, and n is a positive integer.
In the display of two adjacent frames, during the nth frame, the first data line Date gives the positive voltage, the reference voltage line gives 0V or positive voltage, during the (n + 1) th frame, the first data line Date gives the negative voltage or 0V, the reference voltage line gives the negative voltage, like this when thin film transistor receives the drive, the pressure that the grid suffered can be alleviated, thereby when showing same picture for a long time, prevent that threshold voltage from taking place the positive drift and other regional carriers of picture in time recover, thereby prevent the production of afterimage.
Further, in the nth frame, the voltage difference between the data signal voltage Vdate and the reference voltage Vref is a, in the (n + 1) th frame, the voltage difference between the data signal voltage Vdate and the reference voltage Vref is b, and a is equal to b, so that the display brightness of the display panel in the two frames is ensured to be on the same gamma curve.
Further, in the nth frame, the data signal voltage Vdate is less than or equal to 7.5 volts, and the reference voltage Vref is 0; at the n +1 th frame, the data signal voltage Vdate is in the range of a value-7.5 to a value 0, and the reference voltage Vref is-7.5 volts.
In practical display, since the reference voltage line is provided with 1 torr 4 structure, and one reference voltage line provides the reference voltage Vref of 4 pixels 20, a uniform and large enough negative voltage needs to be provided for the reference voltage line, and different gray scale voltages can be displayed by only converting different data signal voltages Vdata.
It should be noted that the first scan signal voltage G1 and the second scan signal voltage G2 are both in the range of-8V to 22V, the high potential voltage Vdd is 24V, and the low potential voltage Vss is 0V.
Example two:
a display panel, which is different from the first embodiment in that the display panel is driven by column inversion.
Specifically, in the pixel driving unit electrically connected to the m-th row of pixels 20 during the nth frame, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate.
In the pixel driving unit electrically connected to the m-th row of pixels 20 at the (n + 1) th frame, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; m is a positive integer.
Further, in the pixel driving unit electrically connected to the m-th row of pixels 20 in the nth frame, the data signal voltage Vdate is a positive voltage less than or equal to 7.5V, and the reference voltage Vref is 0V; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is in a range from-7.5V to a value 0, and the reference voltage Vref is-7.5V.
In the pixel driving unit electrically connected to the m-th row of pixels 20 at the (n + 1) th frame, the data signal voltage Vdate is in the range from-7.5V to a value of 0, and the reference voltage Vref is-7.5V; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is a positive voltage less than or equal to 7.5V, and the reference voltage Vref is 0V.
Example three:
a display panel, which is different from the first embodiment in that the driving method of the display panel is row inversion.
Specifically, in the pixel driving unit electrically connected to the pixels 20 in the kth row in the nth frame, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; in the pixel driving unit electrically connected to the pixels 20 in the (k + 1) th row, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate.
In the pixel driving unit electrically connected to the pixels 20 in the kth row at the (n + 1) th frame, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate; in the pixel driving unit electrically connected to the (k + 1) th row of pixels 20, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; k is a positive integer.
Further, in the pixel driving unit electrically connected to the pixels 20 in the K-th row in the nth frame, the data signal voltage Vdate is a positive voltage less than or equal to 7.5V, and the reference voltage Vref is 0V; in the pixel driving unit electrically connected to the pixels 20 in the (K + 1) th row, the data signal voltage Vdate is in a range from-7.5V to a value of 0, and the reference voltage Vref is-7.5V.
In the pixel driving unit electrically connected to the pixels 20 in the K-th row at the (n + 1) -th frame, the data signal voltage Vdate is in the range from-7.5V to a value of 0, and the reference voltage Vref is-7.5V; in the pixel driving unit electrically connected to the pixels 20 in the (K + 1) th row, the data signal voltage Vdate is a positive voltage less than or equal to 7.5V, and the reference voltage Vref is 0V.
Example four:
based on the display panel, the invention further provides a driving method of a display panel, in the nth frame, in the pixel driving unit which corresponds to and is electrically connected to the pixels 20 one to one, the data signal voltage Vdate provided by the first data line Date is a positive voltage, and the reference voltage Vref provided by the reference voltage line is a voltage which is less than the data signal voltage Vdate and is greater than or equal to 0; in the (n + 1) th frame, the data signal voltage Vdate supplied by the first data line Date is less than or equal to 0, the reference voltage Vref supplied by the reference voltage line is a negative voltage less than the data signal voltage Vdate, and n is a positive integer.
Further, when the driving method of the display panel is column inversion, in the pixel driving unit electrically connected to the m-th row of pixels 20 in the nth frame, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate.
In the pixel driving unit electrically connected to the m-th row of pixels 20 at the (n + 1) th frame, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate; in the pixel driving unit electrically connected to the m +1 th row of pixels 20, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; m is a positive integer.
Further, when the driving method of the display panel is line inversion, in the pixel driving unit electrically connected to the pixels 20 in the kth row during the nth frame, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; in the pixel driving unit electrically connected to the pixels 20 in the (k + 1) th row, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate.
In the pixel driving unit electrically connected to the pixels 20 in the kth row at the (n + 1) th frame, the data signal voltage Vdate is less than or equal to 0, and the reference voltage Vref is a negative voltage less than the data signal voltage Vdate; in the pixel driving unit electrically connected to the (k + 1) th row of pixels 20, the data signal voltage Vdate is a positive voltage, and the reference voltage Vref is a positive voltage smaller than the data signal voltage Vdate; k is a positive integer.
The invention has the beneficial effects that: in the display of two adjacent frames, during the nth frame, the first data line Date gives positive voltage, the reference voltage line gives 0V or positive voltage, the first data line Date of the (n + 1) th frame gives negative voltage or 0V, the reference voltage line gives negative voltage, thus when the thin film transistor is driven, the pressure suffered by the grid can be relieved, thereby when the same picture is displayed for a long time, the forward drift of the threshold voltage is prevented, and the carriers in other areas of the picture are timely restored, thereby preventing the generation of afterimages.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A display panel is characterized by comprising a substrate, a plurality of pixels and pixel driving units, wherein the pixels are arranged on the substrate and distributed in an array manner, and the pixel driving units correspond to the pixels one by one and are electrically connected with the pixels; the pixel driving unit includes:
the scanning device comprises a first scanning line and a second scanning line which are transversely arranged;
a first data line arranged longitudinally;
an organic light emitting diode;
a first thin film transistor electrically connected to the first scan line and the first data line;
the second thin film transistor is electrically connected with the second scanning line and a reference voltage line;
the driving thin film transistor comprises a grid electrode electrically connected with the drain electrode of the first thin film transistor, a drain electrode electrically connected with the voltage supply line, and a source electrode electrically connected with the anode of the organic light emitting diode and the second thin film transistor;
in the nth frame, the data signal voltage provided by the first data line is a positive voltage, and the reference voltage provided by the reference voltage line is a voltage which is less than the data signal voltage and greater than or equal to 0; in the (n + 1) th frame, the data signal voltage is less than or equal to 0, the reference voltage is a negative voltage less than the data signal voltage, and n is a positive integer;
in the nth frame, the voltage difference between the data signal voltage and the reference voltage is a, in the (n + 1) th frame, the voltage difference between the data signal voltage and the reference voltage is b, and a is equal to b.
2. The display panel of claim 1, wherein the data signal voltage is less than or equal to 7.5 volts and the reference voltage is 0 at the nth frame.
3. The display panel of claim 2, wherein the data signal voltage is in a range of-7.5 to 0 and the reference voltage is-7.5 volts at frame n + 1.
4. The display panel according to claim 1, wherein in the pixel driving unit electrically connected to the m-th row of pixels in the n-th frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the mth row of pixels in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; m is a positive integer.
5. The display panel according to claim 1, wherein in the pixel driving unit electrically connected to the pixels in the kth row at the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the (k + 1) th row, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the kth row in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the (k + 1) th column of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; k is a positive integer.
6. The display panel according to claim 1, wherein the pixel driving unit further comprises a capacitor, one end of the capacitor is electrically connected to the drain of the first thin film transistor, and the other end of the capacitor is connected to the source of the driving thin film transistor, the drain of the second thin film transistor, and the anode of the organic light emitting diode at a first node.
7. A driving method of a display panel is characterized in that in an nth frame, in a pixel driving unit which corresponds to pixels one by one and is electrically connected with the pixels, a data signal voltage provided by a first data line is a positive voltage, and a reference voltage provided by a reference voltage line is a voltage which is less than the data signal voltage and is greater than or equal to 0; in the (n + 1) th frame, the data signal voltage provided by the first data line is less than or equal to 0, the reference voltage provided by the reference voltage line is a negative voltage less than the data signal voltage, and n is a positive integer;
in the nth frame, the voltage difference between the data signal voltage and the reference voltage is a, in the (n + 1) th frame, the voltage difference between the data signal voltage and the reference voltage is b, and a is equal to b.
8. The method according to claim 7, wherein in the pixel driving unit electrically connected to the m-th row of pixels in the n-th frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the mth row of pixels in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the m +1 th row of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; m is a positive integer.
9. The method according to claim 7, wherein in the pixel driving unit electrically connected to the pixels in the kth row during the nth frame, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the (k + 1) th row, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the pixels in the kth row in the (n + 1) th frame, the data signal voltage is less than or equal to 0, and the reference voltage is a negative voltage less than the data signal voltage; in the pixel driving unit electrically connected with the (k + 1) th column of pixels, the data signal voltage is a positive voltage, and the reference voltage is a positive voltage smaller than the data signal voltage; k is a positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127263.1A CN109686304B (en) | 2019-02-20 | 2019-02-20 | Display panel and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127263.1A CN109686304B (en) | 2019-02-20 | 2019-02-20 | Display panel and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109686304A CN109686304A (en) | 2019-04-26 |
| CN109686304B true CN109686304B (en) | 2020-09-01 |
Family
ID=66196600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910127263.1A Active CN109686304B (en) | 2019-02-20 | 2019-02-20 | Display panel and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109686304B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11183878A (en) * | 1997-12-19 | 1999-07-09 | Pioneer Electron Corp | Antiferroelectric liquid crystal display device and its driving method |
| CN101051441A (en) * | 2006-04-04 | 2007-10-10 | 三星电子株式会社 | Display device and driving method thereof |
| CN101615384A (en) * | 2008-06-24 | 2009-12-30 | 乐金显示有限公司 | Lcd |
| WO2013069560A1 (en) * | 2011-11-10 | 2013-05-16 | シャープ株式会社 | Display device and drive method for same |
| CN103250202A (en) * | 2011-08-02 | 2013-08-14 | 夏普株式会社 | Display device and method for powering same |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004301989A (en) * | 2003-03-31 | 2004-10-28 | Fujitsu Display Technologies Corp | Driving method for liquid crystal display panel and liquid crystal display device |
| JP4307474B2 (en) * | 2006-09-29 | 2009-08-05 | シチズンホールディングス株式会社 | Display device |
| TWI463463B (en) * | 2012-04-12 | 2014-12-01 | Chunghwa Picture Tubes Ltd | Organic light emitting diode display and operating method thereof |
| CN104766588B (en) * | 2015-05-08 | 2017-07-28 | 京东方科技集团股份有限公司 | A kind of driving method of display panel, display device |
| CN106710555A (en) * | 2017-01-22 | 2017-05-24 | 京东方科技集团股份有限公司 | Display panel, display device and driving device of display device |
| KR102326166B1 (en) * | 2017-06-30 | 2021-11-16 | 엘지디스플레이 주식회사 | Electroluminescent Display Device and Driving Method thereof |
| CN107492343B (en) * | 2017-08-18 | 2020-06-09 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit for OLED display device and OLED display device |
| CN107657919B (en) * | 2017-10-10 | 2019-11-26 | 深圳市华星光电半导体显示技术有限公司 | AMOLED display device and its driving method |
| CN107767832B (en) * | 2017-11-07 | 2020-02-07 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel and grid drive circuit |
| CN107833559B (en) * | 2017-12-08 | 2023-11-28 | 合肥京东方光电科技有限公司 | Pixel driving circuit, organic light emitting display panel and pixel driving method |
| CN108922476B (en) * | 2018-06-21 | 2020-06-12 | 武汉华星光电半导体显示技术有限公司 | OLED pixel driving circuit and OLED display |
-
2019
- 2019-02-20 CN CN201910127263.1A patent/CN109686304B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11183878A (en) * | 1997-12-19 | 1999-07-09 | Pioneer Electron Corp | Antiferroelectric liquid crystal display device and its driving method |
| CN101051441A (en) * | 2006-04-04 | 2007-10-10 | 三星电子株式会社 | Display device and driving method thereof |
| CN101615384A (en) * | 2008-06-24 | 2009-12-30 | 乐金显示有限公司 | Lcd |
| CN103250202A (en) * | 2011-08-02 | 2013-08-14 | 夏普株式会社 | Display device and method for powering same |
| WO2013069560A1 (en) * | 2011-11-10 | 2013-05-16 | シャープ株式会社 | Display device and drive method for same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109686304A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8884852B2 (en) | Display device having a pixel that synthesizes signal values to increase a number of possible display gradations and display method | |
| JP4915195B2 (en) | Display device | |
| US9466243B2 (en) | Compensation of threshold voltage in driving transistor of organic light emitting diode display device | |
| US10504440B2 (en) | Pixel circuit, driving method thereof, display panel and display apparatus | |
| US20180130412A1 (en) | Pixel circuit, driving method therefor, and display device | |
| JP4852866B2 (en) | Display device and drive control method thereof | |
| US20120162169A1 (en) | Active matrix type organic el display device and its driving method | |
| US20220157246A1 (en) | Pixel Driving Circuit and Electroluminescent Display Device Including the Same | |
| JP4235045B2 (en) | Driving method of display device | |
| US8810488B2 (en) | Display device and method for driving the same | |
| US8325113B2 (en) | Organic electroluminescent display device and driving method of the same | |
| US10692431B2 (en) | Gate driver, display apparatus having the same and method of driving display panel using the same | |
| KR102588103B1 (en) | Display device | |
| EP1920430B1 (en) | Active matrix-type display device | |
| JP4952886B2 (en) | Display device and drive control method thereof | |
| JP2010107763A (en) | El display device | |
| JP2010054788A (en) | El display device | |
| US20120120041A1 (en) | Display device | |
| JP2010002736A (en) | El display | |
| US10482814B2 (en) | Display device and method for driving same | |
| CN111326108B (en) | Organic light emitting display device for preventing distortion of reference voltage | |
| US10482816B2 (en) | Method for driving display element, display device, and electronic device | |
| CN109686304B (en) | Display panel and driving method thereof | |
| US11455961B2 (en) | Display device | |
| JP5182382B2 (en) | Display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |