CN112470211A - Display panel, display device and driving method - Google Patents
Display panel, display device and driving method Download PDFInfo
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- CN112470211A CN112470211A CN201880093839.0A CN201880093839A CN112470211A CN 112470211 A CN112470211 A CN 112470211A CN 201880093839 A CN201880093839 A CN 201880093839A CN 112470211 A CN112470211 A CN 112470211A
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- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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Abstract
A display device (20), a display panel (10) and a driving method thereof, the display panel (10) comprises data lines (100), scanning lines (200), a pixel driving circuit (300) and a driver (400), the pixel driving circuit (300) comprises a storage capacitor (310); the driver (400) is electrically connected to the data lines (100) for providing a charging voltage, wherein the charging voltage includes a pre-charging voltage and a data voltage, wherein a voltage value of the pre-charging voltage is greater than a voltage value of the data voltage, and the charging voltage is provided to each storage capacitor (310) connected to the same data line (100), so that a storage capacitance value of each storage capacitor (310) connected to the same data line (100) reaches a predetermined capacitance value within a predetermined time. The display panel (10) can realize the rapid charging of the storage capacitor (310), so that the whole display effect of the panel is uniform.
Description
The invention relates to the technical field of liquid crystal display, in particular to a display panel, a display device and a driving method.
In the prior art, a driving circuit in a liquid crystal display is mainly completed by linking an integrated circuit outside a liquid crystal panel, the display panel includes a plurality of row pixel driving circuits, each row is turned on by scanning one row and one row, the driving circuit is arranged at one end of the liquid crystal display panel, because the display panel is relatively large, a storage capacitor in the row pixel driving circuit close to the driving circuit can reach a set voltage relatively quickly, and due to a distance reason, a time difference exists between the charging of the storage capacitor in the row pixel driving circuit far away from the driving circuit and the charging of the storage capacitor at a near end, so that the charging of the storage capacitor at a far end is insufficient, and a display picture of the display panel is not uniform.
Disclosure of Invention
In view of the above, a display panel with better uniformity of display image is provided.
A display panel comprises a plurality of data lines arranged at intervals, a plurality of scanning lines arranged at intervals, a plurality of pixel driving circuits and a driver, wherein the scanning lines and the data lines are arranged in a crossed manner, a pixel area is formed between two adjacent data lines and two adjacent scanning lines, each pixel driving circuit is arranged in the corresponding pixel area and is respectively connected with the corresponding data lines and the corresponding scanning lines, and each pixel driving circuit comprises a storage capacitor;
the driver is electrically connected with the data lines and used for providing charging voltage, the charging voltage comprises pre-charging voltage and data voltage, the voltage value of the pre-charging voltage is greater than that of the data voltage, and the charging voltage is provided for each storage capacitor connected to the same data line, so that the storage capacitance value of each storage capacitor connected to the same data line reaches a preset capacitance value within preset time.
Preferably, the precharge voltage is provided prior to the data voltage for the same storage capacitor.
Preferably, on the same data line, the pixel driving circuit connected to the nth scan line is denoted as an nth pixel driving circuit, the storage capacitor in the nth pixel driving circuit is denoted as an nth storage capacitor, and the charging voltage provided to the nth storage capacitor is denoted as an nth charging voltage;
the driver determines the voltage value and the charging time of the pre-charging voltage in the nth charging voltage according to the distance between the nth storage capacitor and the driver.
Preferably, for any one of the storage capacitors on the same data line, when the voltage values of the precharge voltages provided to any one of the storage capacitors are equal, the precharge time of the precharge voltage provided to the storage capacitor farther from the driver is longer.
Preferably, for any one of the storage capacitors on the same data line, when the charging time of the precharge voltage provided to any one of the storage capacitors is equal, the voltage value of the precharge voltage provided to the storage capacitor farther from the driver is larger.
Preferably, the pixel driving circuit includes a switching thin film transistor, the switching thin film transistor in the nth pixel driving circuit is marked as an nth switching thin film transistor, and the nth switching thin film transistor is used for controlling the on and off of the data line and the nth storage capacitor;
when the driver provides the nth charging voltage to the nth storage capacitor, the nth switching thin film transistor is conducted; and the other switching thin film transistors on the same data line are cut off.
Preferably, the scanning line is connected to the switching thin film transistor, the scanning line is used for providing scanning information, and the scanning information is on information or off information;
when the scanning information is the conducting information, the switch thin film transistor is conducted; when the scanning information is cut-off information, the switching thin film transistor is cut off.
Preferably, on the same data line, the pixel driving circuit connected to the (n-1) th scanning line is recorded as an (n-1) th pixel driving circuit, wherein the (n-1) th scanning line is arranged adjacent to the nth scanning line;
the storage capacitor in the (n-1) th pixel driving circuit is marked as an (n-1) th storage capacitor, and the charging voltage provided for the (n-1) th storage capacitor is marked as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance;
the distance between the nth storage capacitor and the driver is recorded as nth distance;
the starting time of the nth storage capacitor for providing the nth charging voltage is the nth starting time, the starting time of the nth-1 storage capacitor for providing the nth-1 charging voltage is the nth-1 starting time, the nth-1 distance is smaller than the nth distance, and the nth starting time is earlier than the nth-1 starting time.
Preferably, the time for controlling the turn-on of the nth switching thin film transistor by the turn-on information is recorded as nth time, and the nth time is equal to the n-1 starting time minus the nth starting time.
The invention also provides a display device comprising the display panel.
The invention also provides a driving method of the display panel, the display panel comprises a plurality of data lines arranged at intervals, a plurality of scanning lines arranged at intervals, a plurality of pixel driving circuits and a driver, the scanning lines and the data lines are arranged in a crossed manner, pixel areas are formed between two adjacent data lines and two adjacent scanning lines, each pixel driving circuit is arranged in the corresponding pixel area, each pixel driving circuit is respectively connected with the corresponding data line and the corresponding scanning line, and each pixel driving circuit comprises a storage capacitor; the driver is electrically connected with the plurality of data lines, and the driving method of the display panel comprises the following steps:
the driver provides a charging voltage, the charging voltage comprises a pre-charging voltage and a data voltage, wherein the voltage value of the pre-charging voltage is greater than that of the data voltage, and the charging voltage is provided to each storage capacitor connected to the same data line, so that the storage capacitance value of each storage capacitor connected to the same data line reaches a preset capacitance value within a preset time.
Preferably, on the same data line, the pixel driving circuit connected to the nth scanning line is denoted as an nth pixel driving circuit, and the storage capacitor in the nth pixel driving circuit is denoted as an nth storage capacitor; the charging voltage provided to the nth storage capacitor is recorded as nth charging voltage; the distance between the nth storage capacitor and the driver is recorded as nth distance; the pre-charging voltage in the nth charging voltage is recorded as an nth pre-charging voltage, the voltage value of the nth pre-charging voltage is recorded as an nth pre-charging voltage value, and the charging time of the nth pre-charging voltage is recorded as an nth pre-charging time;
the driving method of the display panel includes:
the driver provides the nth precharge voltage to the data line;
the data line transmits the nth pre-charge voltage to an nth storage capacitor;
the driver supplies the data voltage to the data line;
and the data line transmits the data voltage to the nth storage capacitor so that the nth storage capacitor reaches a preset capacitor voltage.
Preferably, the pixel driving circuit connected to the (n-1) th scanning line is denoted as an (n-1) th pixel driving circuit, and the storage capacitor in the (n-1) th pixel driving circuit is denoted as an (n-1) th storage capacitor; the charging voltage provided to the (n-1) th storage capacitor is recorded as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance; the pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time;
the n-1 th distance is less than the nth distance;
the driving method of the display panel further includes:
the driver provides an n-1 pre-charge voltage to the data line, the n-1 pre-charge voltage value is equal to the n pre-charge voltage value, and the n-1 pre-charge time is less than the n pre-charge time;
the data line transmits the n-1 th pre-charging voltage to an n-1 th storage capacitor;
the driver supplies the data voltage to the data line;
and the data line transmits the data voltage to the (n-1) th storage capacitor so that the (n-1) th storage capacitor reaches a preset capacitor voltage.
Preferably, the pixel driving circuit connected to the (n-1) th scanning line is denoted as an (n-1) th pixel driving circuit, and the storage capacitor in the (n-1) th pixel driving circuit is denoted as an (n-1) th storage capacitor; the charging voltage provided to the (n-1) th storage capacitor is recorded as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance; the pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time;
the n-1 th distance is less than the nth distance;
the driving method of the display panel further includes:
the driver provides an n-1 pre-charge voltage to the data line, the n-1 pre-charge time is equal to the n pre-charge time, and the n-1 pre-charge voltage value is smaller than the n pre-charge voltage value;
the data line transmits the n-1 th pre-charging voltage to an n-1 th storage capacitor;
the driver supplies the data voltage to the data line;
and the data line transmits the data voltage to the (n-1) th storage capacitor so that the (n-1) th storage capacitor reaches a preset capacitor voltage.
The present invention also provides a computer-readable storage medium storing a program for driving a display device, wherein the program executes a driving method according to any one of the above-described methods when executed.
The invention has the beneficial effects that: the display panel provided by the invention can realize the rapid charging of the storage capacitor, so that the integral display effect of the panel is uniform.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 3 is a flowchart of a driving method of a display panel according to an embodiment of the invention;
fig. 4 is a flowchart of a driving method of a display panel according to another embodiment of the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, and in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, an embodiment of the present invention provides a display panel 10, where the display panel 10 includes a plurality of data lines 100 arranged at intervals, a plurality of scan lines 200 arranged at intervals, a plurality of pixel driving circuits 300 and a driver 400, the scan lines 200 are arranged to intersect with the data lines 100, a pixel region 500 is formed between two adjacent data lines 100 and two adjacent scan lines 200, each pixel driving circuit 300 is arranged in a corresponding pixel region 500, each pixel driving circuit 300 is connected to a corresponding data line 100 and a corresponding scan line 200, and each pixel driving circuit 300 includes a storage capacitor 310.
The driver 400 is electrically connected to the data lines 100, and is configured to provide a charging voltage, where the charging voltage includes a pre-charging voltage and a data voltage, a voltage value of the pre-charging voltage is greater than a voltage value of the data voltage, and the charging voltage is provided to the storage capacitors 310 connected to the same data line 100, so that a storage capacitance value of each storage capacitor 310 connected to the same data line 100 reaches a predetermined capacitance value within a predetermined time.
It is understood that if only the data voltage is provided to charge the storage capacitor 310, the effective capacitance of the storage capacitor 310 is equal to the sum of the total amount of the data voltage charged to the storage capacitor 310 in the predetermined time. Since the display panel 10 generally includes a plurality of storage capacitors 310, and the storage capacitors 310 on the same data line 100 are different from the driver 400 in distance, especially for the storage capacitors 310 far away from the driver 400, the data voltages received by the storage capacitors 310 have hysteresis, which results in insufficient effective capacitance after the storage capacitors 310 are charged, thereby causing non-uniformity of the display effect of the display panel 10. In the embodiment of the present invention, the pre-charge voltage is provided to charge the storage capacitor 310 before the data voltage is provided, and since the voltage value of the pre-charge voltage is greater than the data voltage, the storage capacitor 310 is charged within the preset time, and the total effective capacitance of the storage capacitor 310 is greater than the total effective capacitance of the storage capacitor 310 charged by only providing the data voltage, so as to improve the problem of non-uniform display of the display panel 10.
In a further embodiment, the precharge voltage is provided prior to the data voltage for the same storage capacitor 310. The precharge voltage is provided first, which avoids the risk of breakdown of the storage capacitor 310. Since the pre-charge voltage is high relative to the data voltage, if the data voltage is provided to charge the storage capacitor first, and the storage capacitor is charged with the pre-charge voltage after the storage capacitance reaches a certain value, there is a risk that the pre-charge voltage is high and the storage capacitor 310 may be broken down.
In a further embodiment, on the same data line 100, the pixel driving circuit 300 connected to the nth scan line 200 is referred to as an nth pixel driving circuit 300a, the storage capacitor 310 in the nth pixel driving circuit 300a is referred to as an nth storage capacitor 310a, and the charging voltage provided to the nth storage capacitor 310a is referred to as an nth charging voltage. The driver 400 determines a voltage value and a charging time of a precharge voltage among the nth charging voltage according to a distance between the nth storage capacitor 310a and the driver 400.
In a further embodiment, for any one of the storage capacitors 310 on the same data line 100, when the voltage values of the precharge voltages provided to any one of the storage capacitors 310 are equal, the longer the precharge time of the precharge voltage provided to the storage capacitor 310 farther from the driver 400 is.
For example, on the same data line 100, the pixel driving circuit 300 connected to the (n-1) th scan line 200 is denoted as an (n-1) th pixel driving circuit 300b, wherein the (n-1) th scan line 200 is disposed adjacent to the (n) th scan line 200. The storage capacitor 310 in the n-1 th pixel driving circuit 300b is referred to as an n-1 th storage capacitor 310b, and the charging voltage provided to the n-1 th storage capacitor 310b is referred to as an n-1 th charging voltage. The distance between the (n-1) th storage capacitor 310b and the driver 400 is denoted as the (n-1) th distance. The distance between the nth storage capacitor 310a and the driver 400 is denoted as the nth distance. The pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time, and the charging time of the n pre-charging voltage is marked as an n pre-charging time.
And when the voltage value of the n-1 th pre-charging voltage is equal to that of the n-1 th pre-charging voltage and the n-1 th distance is less than the n-1 th distance, the n-1 th pre-charging time is longer than the n-1 th pre-charging time. That is, when the voltage values of the precharge voltages applied to the storage capacitors 310 on the same data line 100 by the driver 400 are equal, the nth precharge time required for the nth storage capacitor 310a farther away from the driver 400 is longer than the nth-1 precharge time required for the nth storage capacitor 310b closer to the driver 400, so as to compensate the capacitance value of the storage capacitor 310b that is insufficiently charged due to the farther away, and the sum of the capacitance values reaches the predetermined capacitance value.
In a further embodiment, for any one of the storage capacitors 310 on the same data line 100, when the charging time of the pre-charge voltage provided to any one of the storage capacitors 310 is equal, the voltage value of the pre-charge voltage provided to the storage capacitor 310 farther from the driver 400 is larger.
For example, the precharge voltage of the n-1 th charging voltage is denoted as an n-1 th precharge voltage, the voltage value of the n-1 th precharge voltage is denoted as an n-1 th precharge voltage value, and the voltage value of the n-1 th precharge voltage is denoted as an n-th precharge voltage value. When the charging time of the n-1 th pre-charging voltage is equal to that of the n-1 th pre-charging voltage and the n-1 th distance is smaller than the n-1 th distance, the value of the n-1 th pre-charging voltage is larger than that of the n-1 th pre-charging voltage. That is, when the charging time of the precharge voltage provided by the driver 400 to the storage capacitors 310 on the same data line 100 is equal, the value of the nth precharge voltage required by the nth storage capacitor 310a farther from the driver 400 is greater than the value of the nth-1 precharge voltage required by the nth-1 storage capacitor 310b closer to the driver 400. Therefore, the capacitance of the storage capacitor 310b that is not charged enough due to the long distance is compensated, so that the total capacitance reaches the predetermined capacitance.
In addition to the above technical solution in which the pre-charge voltage value and the pre-charge time are used separately, the pre-charge voltage value and the pre-charge time can be adjusted simultaneously to charge the storage capacitor, so as to solve the insufficient capacitance of the remote storage capacitor.
It is understood that when the charging time of the precharge voltage supplied to any one of the storage capacitors 310 is equal, correspondence information between the nth distance and the nth precharge voltage value forms first correspondence information, which is stored in the driver 400. The driver 400 reads the first corresponding information and provides the voltage value of the precharge voltage for the nth storage capacitor according to the first corresponding information. For each storage capacitor 310 on the same data line 100, the driver 400 stores therein first corresponding information corresponding to the storage capacitor 310, and the first corresponding information is different for storage capacitors at different positions. It is understood that the first corresponding information may be obtained by testing each storage capacitor 310 in the display panel 10, and storing the tested data in the driver 400, wherein the testing method may select three storage capacitors nearest to, in and farthest from the driver 400 on the same data line, and then obtain data of other storage capacitors by using an interpolation method according to the data of the three storage capacitors, so as to obtain the first corresponding information of each storage capacitor on the entire data line.
It is understood that the driver 400 may include a register therein, the first corresponding information is stored in the register, and the driver 400 provides the voltage value of the precharge voltage by reading the first corresponding information in the register. It is understood that the number of the registers may be multiple, and the corresponding relationships of the storage capacitors on the same data line may be grouped into different registers, for example, the register near one end of the driver is denoted as the 1 st register, the corresponding relationships of the 1 st to 10 th storage capacitors may be stored in the 1 st register, the corresponding relationships of the 11 th to 20 th storage capacitors may be stored in the 2 nd register, and so on. The driver 400 reads corresponding first corresponding information from corresponding registers to provide voltage values of the precharge voltage, respectively.
It is understood that, when the voltage values of the precharge voltages provided to any one of the storage capacitors 310 are equal, the correspondence information between the nth distance and the nth precharge time forms second correspondence information, which is stored in the driver. The driver 400 reads the second corresponding information and provides the charging time of the pre-charging voltage for the nth storage capacitor according to the second corresponding information.
In a further embodiment, the pixel driving circuit 300 includes a switching thin film transistor 320, the switching thin film transistor 320 in the nth pixel driving circuit 300a is denoted as an nth switching thin film transistor 320a, and the nth switching thin film transistor 320a is used for controlling the data line 100 and the nth storage capacitor 310a to be turned on and off.
When the driver 400 provides the nth charging voltage to the nth storage capacitor 310a, the nth switching thin film transistor 320a is turned on. The other switching thin film transistors 320 on the same data line 100 are turned off. That is, each storage capacitor 310 on the same data line 100 is charged in different time periods. When the driver 400 charges the nth storage capacitor 310a, the other storage capacitors 310 are not charged. The charging sequence of the storage capacitor 310 is controlled by the switching thin film transistor 320, so that the storage capacitor 310 completes the charging process more orderly.
In a further embodiment, the scan line 200 is connected to the switching thin film transistor 320, and the scan line 200 is used for providing scan information, which is on information or off information. When the scanning information is the on information, the switching thin film transistor 320 is turned on. When the scan information is off information, the switching thin film transistor 320 is turned off. When the switching thin film transistor 320 is an N-type transistor, the turn-on information is at a high level, and the turn-off information is at a low level. When the switching thin film transistor 320 is a P-type transistor, the turn-on information is at a low level and the turn-off information is at a high level.
In a further embodiment, the nth charging voltage is provided to the nth storage capacitor 310a at an nth starting time, the nth-1 charging voltage is provided to the nth storage capacitor 310b at an nth-1 starting time, the nth-1 distance is less than the nth distance, and the nth starting time is earlier than the nth-1 starting time. That is, the scan line 200 starts scanning from an end far from the driver 400.
In a further embodiment, the time when the turn-on information controls the turn-on of the nth switching thin film transistor 320a is recorded as nth time, and the nth time is equal to the nth-1 starting time minus the nth starting time. When the scanning line scans the nth storage capacitor 310a and the (n-1) th storage capacitor 310b in a continuous time, the predetermined time is the nth time.
Referring to fig. 2, an embodiment of the invention further provides a display device 20, where the display device 20 includes the display panel 10 according to any of the embodiments. The display device 20 may be, but not limited to, an electronic book, a smart Phone (e.g., an Android Phone, an iOS Phone, a Windows Phone), a tablet computer, a flexible palm computer, a flexible notebook computer, a Mobile Internet device (MID, Mobile Internet Devices), or a wearable device, or may be an Organic Light-Emitting Diode (OLED) display device, an Active Matrix Organic Light Emitting Diode (AMOLED) display device.
The embodiment of the present invention further provides a driving method of a display panel 10, where the display panel 10 includes a plurality of data lines 100 arranged at intervals, a plurality of scan lines 200 arranged at intervals, a plurality of pixel driving circuits 300, and a driver 400, the scan lines 200 are arranged to intersect with the data lines 100, a pixel region 500 is formed between two adjacent data lines 100 and two adjacent scan lines 200, each pixel driving circuit 300 is arranged in a corresponding pixel region 500, each pixel driving circuit 300 is connected to a corresponding data line 100 and scan line 200, and each pixel driving circuit 300 includes a storage capacitor 310. The driver 400 is electrically connected to the plurality of data lines 100, and the driving method of the display panel 10 includes the following step S100. The detailed process of step S100 is as follows.
In step S100, the driver 400 provides a charging voltage, where the charging voltage includes a pre-charging voltage and a data voltage, and a voltage value of the pre-charging voltage is greater than a voltage value of the data voltage, and the charging voltage is provided to each storage capacitor 310 connected to the same data line 100, so that a storage capacitance value of each storage capacitor 310 connected to the same data line 100 reaches a predetermined capacitance value within a predetermined time.
In a further embodiment, on the same data line 100, the pixel driving circuit 300 connected to the nth scan line 200 is referred to as an nth pixel driving circuit 300a, and the storage capacitor 310 in the nth pixel driving circuit 300a is referred to as an nth storage capacitor 310 a. The charging voltage provided to the nth storage capacitor 310a is denoted as the nth charging voltage. The distance between the nth storage capacitor 310a and the driver 400 is denoted as the nth distance. The precharge voltage in the nth charging voltage is recorded as nth precharge voltage, the voltage value of the nth precharge voltage is recorded as nth precharge voltage value, and the charging time of the nth precharge voltage is recorded as nth precharge time.
Referring to fig. 3, the driving method of the display panel 10 includes steps S110, S120, S130 and S140. The detailed process of each step is as follows.
In step S110, the driver 400 provides the nth precharge voltage to the data line 100.
In step S120, the data line 100 transmits the nth precharge voltage to the nth storage capacitor 310 a.
In step S130, the driver 400 provides the data voltage to the data line 100.
In step S140, the data line 100 transmits the data voltage to the nth storage capacitor 310a, so that the nth storage capacitor 310a reaches a preset capacitor voltage.
In a further embodiment, the pixel driving circuit 300 connected to the (n-1) th scan line 200 is referred to as an (n-1) th pixel driving circuit 300b, and the storage capacitor 310 in the (n-1) th pixel driving circuit 300b is referred to as an (n-1) th storage capacitor 310 b. The charging voltage supplied to the (n-1) th storage capacitor 310b is denoted as the (n-1) th charging voltage. The distance between the (n-1) th storage capacitor 310b and the driver 400 is denoted as the (n-1) th distance. The pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time. The n-1 th distance is less than the nth distance.
The driving method of the display panel 10 further includes steps S150-i, S160-i, S170-i, and S180-i. The detailed process of each step is as follows.
In step S150-i, the driver 400 provides an n-1 th precharge voltage to the data line 100, the value of the n-1 th precharge voltage is equal to the value of the n-1 th precharge voltage, and the n-1 th precharge time is less than the n-1 th precharge time.
In step S160-I, the data line 100 transmits the (n-1) th precharge voltage to the (n-1) th storage capacitor 310 b.
In step S170-i, the driver 400 supplies the data voltage to the data line 100.
In step S180-i, the data line 100 transmits the data voltage to the n-1 storage capacitor 310b, so that the n-1 storage capacitor 310b reaches a preset capacitor voltage.
Another embodiment of the present invention provides a driving method of a display panel 10, wherein the pixel driving circuit 300 connected to the (n-1) th scan line 200 is denoted as an (n-1) th pixel driving circuit 300b, the storage capacitor 310 in the (n-1) th pixel driving circuit 300b is denoted as an (n-1) th storage capacitor 310b, and the charging voltage provided to the (n-1) th storage capacitor 310b is denoted as an (n-1) th charging voltage. The distance between the (n-1) th storage capacitor 310b and the driver 400 is denoted as the (n-1) th distance. The pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time. The n-1 th distance is less than the nth distance.
Referring to FIG. 4, the driving method of the display panel 10 further includes steps S150-II, S160-II, S170-II and S180-II. The detailed process of each step is as follows.
In step S150-ii, the driver 400 provides an n-1 th precharge voltage to the data line 100, the n-1 th precharge time is equal to the n-1 th precharge time, and the value of the n-1 th precharge voltage is smaller than the value of the n-1 th precharge voltage.
In step S150-II, the data line 100 transmits the (n-1) th precharge voltage to the (n-1) th storage capacitor 310 b.
In step S150-ii, the driver 400 supplies the data voltage to the data line 100.
In step S150-ii, the data line 100 transmits the data voltage to the n-1 storage capacitor 310b, so that the n-1 storage capacitor 310b reaches a preset capacitor voltage.
The present invention also provides a computer-readable storage medium storing a program for driving a display device, wherein the program, when executed, performs the driving method according to any one of the above embodiments. The computer readable storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
- A display panel is characterized by comprising a plurality of data lines arranged at intervals, a plurality of scanning lines arranged at intervals, a plurality of pixel driving circuits and a driver, wherein the scanning lines are arranged in a crossed manner with the data lines, a pixel area is formed between every two adjacent data lines and every two adjacent scanning lines, each pixel driving circuit is arranged in the corresponding pixel area and is respectively connected with the corresponding data lines and the corresponding scanning lines, and each pixel driving circuit comprises a storage capacitor;the driver is electrically connected with the data lines and used for providing charging voltage, the charging voltage comprises pre-charging voltage and data voltage, the voltage value of the pre-charging voltage is greater than that of the data voltage, and the charging voltage is provided for each storage capacitor connected to the same data line, so that the storage capacitance value of each storage capacitor connected to the same data line reaches a preset capacitance value within preset time.
- The display panel of claim 1, wherein the pre-charge voltage is provided prior to the data voltage for the same storage capacitor.
- The display panel according to claim 1, wherein the pixel driving circuit connected to an nth scan line is denoted as an nth pixel driving circuit, the storage capacitor in the nth pixel driving circuit is denoted as an nth storage capacitor, and the charging voltage supplied to the nth storage capacitor is denoted as an nth charging voltage;the driver determines the voltage value and the charging time of the pre-charging voltage in the nth charging voltage according to the distance between the nth storage capacitor and the driver.
- The display panel according to claim 3, wherein the precharge voltage supplied to the storage capacitor farther from the driver has a longer precharge time when the voltage value of the precharge voltage supplied to any one of the storage capacitors is equal to each other for any one of the storage capacitors on the same data line.
- The display panel according to claim 3, wherein the voltage value of the precharge voltage supplied to the storage capacitor farther from the driver is larger when the charging time of the precharge voltage supplied to any one of the storage capacitors is equal for any one of the storage capacitors on the same data line.
- The display panel according to claim 3, wherein the pixel driving circuit comprises a switching thin film transistor, the switching thin film transistor in the nth pixel driving circuit is denoted as an nth switching thin film transistor, and the nth switching thin film transistor is used for controlling the data line and the nth storage capacitor to be turned on and off;when the driver provides the nth charging voltage to the nth storage capacitor, the nth switching thin film transistor is conducted; and the other switching thin film transistors on the same data line are cut off.
- The display panel according to claim 6, wherein the scan line is connected to the switching thin film transistor, and the scan line is used for providing scan information, and the scan information is on information or off information;when the scanning information is the conducting information, the switch thin film transistor is conducted; when the scanning information is cut-off information, the switching thin film transistor is cut off.
- The display panel according to claim 7, wherein the pixel driving circuit connected to the (n-1) th scan line is denoted as an (n-1) th pixel driving circuit on the same data line, wherein the (n-1) th scan line is disposed adjacent to the nth scan line;the storage capacitor in the (n-1) th pixel driving circuit is marked as an (n-1) th storage capacitor, and the charging voltage provided for the (n-1) th storage capacitor is marked as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance;the distance between the nth storage capacitor and the driver is recorded as nth distance;the starting time of the nth storage capacitor for providing the nth charging voltage is the nth starting time, the starting time of the nth-1 storage capacitor for providing the nth-1 charging voltage is the nth-1 starting time, the nth-1 distance is smaller than the nth distance, and the nth starting time is earlier than the nth-1 starting time.
- The display panel according to claim 8, wherein the turn-on information controls the turn-on time of the nth switching thin film transistor to be recorded as an nth time, and the nth time is equal to the n-1 th starting time minus the nth starting time.
- A display device characterized in that it comprises a display panel according to any one of claims 1 to 9.
- The display panel is characterized by comprising a plurality of data lines arranged at intervals, a plurality of scanning lines arranged at intervals, a plurality of pixel driving circuits and a driver, wherein the scanning lines and the data lines are arranged in a crossed manner, a pixel area is formed between two adjacent data lines and two adjacent scanning lines, each pixel driving circuit is arranged in the corresponding pixel area and is respectively connected with the corresponding data lines and the corresponding scanning lines, and each pixel driving circuit comprises a storage capacitor; the driver is electrically connected with the plurality of data lines, and the driving method of the display panel comprises the following steps:the driver provides a charging voltage, the charging voltage comprises a pre-charging voltage and a data voltage, wherein the voltage value of the pre-charging voltage is greater than that of the data voltage, and the charging voltage is provided for each storage capacitor connected to the same data line, so that the storage capacitance value of each storage capacitor connected to the same data line reaches a preset capacitance value within a preset time.
- The method for driving a display panel according to claim 11, wherein the pixel driving circuit connected to the nth scan line on the same data line is denoted as an nth pixel driving circuit, and the storage capacitor in the nth pixel driving circuit is denoted as an nth storage capacitor; the charging voltage provided to the nth storage capacitor is recorded as nth charging voltage; the distance between the nth storage capacitor and the driver is recorded as nth distance; the pre-charging voltage in the nth charging voltage is recorded as an nth pre-charging voltage, the voltage value of the nth pre-charging voltage is recorded as an nth pre-charging voltage value, and the charging time of the nth pre-charging voltage is recorded as an nth pre-charging time;the driving method of the display panel includes:the driver provides the nth precharge voltage to the data line;the data line transmits the nth pre-charge voltage to an nth storage capacitor;the driver supplies the data voltage to the data line;and the data line transmits the data voltage to the nth storage capacitor so that the nth storage capacitor reaches a preset capacitor voltage.
- The method for driving a display panel according to claim 12, wherein the pixel driving circuit connected to the (n-1) th scanning line is referred to as an (n-1) th pixel driving circuit, and the storage capacitor in the (n-1) th pixel driving circuit is referred to as an (n-1) th storage capacitor; the charging voltage provided to the (n-1) th storage capacitor is recorded as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance; the pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time;the n-1 th distance is less than the nth distance;the driving method of the display panel further includes:the driver provides an n-1 pre-charge voltage to the data line, the n-1 pre-charge voltage value is equal to the n pre-charge voltage value, and the n-1 pre-charge time is less than the n pre-charge time;the data line transmits the n-1 th pre-charging voltage to an n-1 th storage capacitor;the driver supplies the data voltage to the data line;and the data line transmits the data voltage to the (n-1) th storage capacitor so that the (n-1) th storage capacitor reaches a preset capacitor voltage.
- The method for driving a display panel according to claim 12, wherein the pixel driving circuit connected to the (n-1) th scanning line is referred to as an (n-1) th pixel driving circuit, and the storage capacitor in the (n-1) th pixel driving circuit is referred to as an (n-1) th storage capacitor; the charging voltage provided to the (n-1) th storage capacitor is recorded as an (n-1) th charging voltage; the distance between the (n-1) th storage capacitor and the driver is recorded as the (n-1) th distance; the pre-charging voltage in the n-1 charging voltage is marked as an n-1 pre-charging voltage, the voltage value of the n-1 pre-charging voltage is marked as an n-1 pre-charging voltage value, and the charging time of the n-1 pre-charging voltage is marked as an n-1 pre-charging time;the n-1 th distance is less than the nth distance;the driving method of the display panel further includes:the driver provides an n-1 pre-charge voltage to the data line, the n-1 pre-charge time is equal to the n pre-charge time, and the n-1 pre-charge voltage value is smaller than the n pre-charge voltage value;the data line transmits the n-1 th pre-charging voltage to an n-1 th storage capacitor;the driver supplies the data voltage to the data line;and the data line transmits the data voltage to the (n-1) th storage capacitor so that the (n-1) th storage capacitor reaches a preset capacitor voltage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2018/089098 WO2019227360A1 (en) | 2018-05-30 | 2018-05-30 | Display panel, display apparatus and driving method |
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| CN112470211A true CN112470211A (en) | 2021-03-09 |
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| CN201880093839.0A Pending CN112470211A (en) | 2018-05-30 | 2018-05-30 | Display panel, display device and driving method |
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| WO (1) | WO2019227360A1 (en) |
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