CN114664251A - Display panel, driving method and related equipment - Google Patents

Display panel, driving method and related equipment Download PDF

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Publication number
CN114664251A
CN114664251A CN202210422806.4A CN202210422806A CN114664251A CN 114664251 A CN114664251 A CN 114664251A CN 202210422806 A CN202210422806 A CN 202210422806A CN 114664251 A CN114664251 A CN 114664251A
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China
Prior art keywords
voltage signal
common voltage
pin
far
display panel
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CN202210422806.4A
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Chinese (zh)
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CN114664251B (en
Inventor
钱娟
熊雄
李佑路
丁雷鸣
郑敏栋
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BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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Priority to CN202210422806.4A priority Critical patent/CN114664251B/en
Publication of CN114664251A publication Critical patent/CN114664251A/en
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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
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application discloses a display panel, a driving method and related equipment, relates to the technical field of display, and can improve poor stripe display. A display panel, comprising: the common electrode, one end of the said common electrode close to the driving chip is electrically connected with at least one near-end pin, one end of the said common electrode far away from the said driving chip is electrically connected with at least one far-end pin; the electrical test pin is used for transmitting an electrical test signal to a display device of the display panel and is electrically connected with the far-end pin; the drive chip is used for transmitting a common voltage signal to the common electrode through the near-end pin and transmitting the common voltage signal to the common electrode through the electrical property test pin and the far-end pin.

Description

Display panel, driving method and related equipment
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a driving method and a related device.
Background
With the continuous development of display technologies, touch technologies are gradually integrated with display technologies, and a touch substrate does not need to be separately arranged in a display device to realize a touch function. The existing touch function is usually realized through a touch electrode, and the capacitance change of the touch electrode can reflect the touch position of a user, so that the touch operation positioning of the user is realized.
However, the touch electrode is usually block-shaped, and in the process of displaying on the display panel, the common voltage on the common electrode is attenuated in the transmission process, and the attenuated voltage is further affected by the touch electrode, so that a stripe display failure is easily generated at the far end of the transmission of the common voltage.
Disclosure of Invention
The embodiment of the application provides a display panel, a driving method and related equipment, which can improve poor stripe display.
In a first aspect of embodiments of the present application, a display panel is provided, including:
the common electrode, one end of the said common electrode close to the driving chip is electrically connected with at least one near-end pin, one end of the said common electrode far away from the said driving chip is electrically connected with at least one far-end pin;
the electrical test pin is used for transmitting an electrical test signal to a display device of the display panel and is electrically connected with the far-end pin;
the drive chip is used for transmitting a common voltage signal to the common electrode through the near-end pin and transmitting the common voltage signal to the common electrode through the electrical property test pin and the far-end pin.
In some embodiments, the common voltage signal comprises a first common voltage signal and a second common voltage signal, the second common voltage signal being greater than the first common voltage signal;
the drive chip is used for transmitting the first common voltage signal to the common electrode through the near-end pin and transmitting the second common voltage signal to the common electrode through the electrical property test pin and the far-end pin.
In some embodiments, the second common voltage signal is determined by an amount of voltage that a third common voltage signal decays during transfer from the near pin to the far pin, wherein the first common voltage signal and the second common voltage signal are both less than the third common voltage signal.
In some embodiments, the start time of the first common voltage signal transmitted by the driving chip is delayed by a set time with respect to the start time of the second common voltage signal.
In some embodiments, the set time is determined by the time that the common voltage signal is transmitted from the driver chip to the remote pin.
In some embodiments, a switch assembly is disposed between the electrical test pin and the distal pin.
In some embodiments, the switch component is configured to receive a turn-off signal for turning off the switch component when the electrical test signal is transmitted to the display device through the electrical test pin;
and under the condition that the common voltage signal is transmitted to the common electrode through the electrical property test pin and the far-end pin, the switch component is used for receiving a starting signal, and the starting signal is used for starting the switch component.
In some embodiments, the switch component includes a thin film transistor, and a gate of the thin film transistor is used for receiving the turn-off signal or the turn-on signal.
In some embodiments, the number of proximal pins is at least two and the number of distal pins is at least two.
In some embodiments, the display panel further includes:
the touch electrodes are electrically connected with the driving chip;
the driving chip is used for driving the display device and the touch electrode.
In a second aspect of the embodiments of the present application, a method for driving a display panel is provided, including:
in the electrical test stage, transmitting an electrical test signal to a display device of the display panel through the electrical test pin;
in the display stage, a driving chip is used for transmitting a public voltage signal to a public electrode through a near-end pin, and transmitting the public voltage signal to the public electrode through an electrical property testing pin and a far-end pin, wherein one end of the public electrode close to the driving chip is electrically connected with at least one near-end pin, one end of the public electrode far away from the driving chip is electrically connected with at least one far-end pin, and the electrical property testing pin is electrically connected with the far-end pin.
In some embodiments, the common voltage signal comprises a first common voltage signal and a second common voltage signal, the second common voltage signal being greater than the first common voltage signal;
in the display stage, transmitting a common voltage signal to a common electrode through a near-end pin and transmitting the common voltage signal to the common electrode through the electrical property test pin and a far-end pin by using a driving chip, including:
in a display stage, the driving chip is used for transmitting the first common voltage signal to the common electrode through the near-end pin and transmitting the second common voltage signal to the common electrode through the electrical property testing pin and the far-end pin.
In some embodiments, the transmitting, by the driving chip, the first common voltage signal to the common electrode through the near-end pin and the second common voltage signal to the common electrode through the electrical property testing pin and the far-end pin in the display stage includes:
in a display stage, the driving chip is used for transmitting the second common voltage signal to the common electrode through the electrical property testing pin and the far-end pin;
and after a set time, transmitting the first common voltage signal to the common electrode through the near-end pin by using the driving chip.
In some embodiments, before the transmitting, by the driving chip, the second common voltage signal to the common electrode through the electrical test pin and the remote pin in the display stage, the method further includes:
transmitting a third common voltage signal to the common electrode through the near-end pin, and collecting the voltage on the far-end pin to obtain a far-end common voltage;
performing difference operation on the third common voltage signal and the far-end common voltage to obtain an attenuation voltage;
and adding the first common voltage signal and the attenuation voltage to obtain a second common voltage signal.
In some embodiments, the method of driving a display panel further includes:
and testing the time of the second common voltage signal transmitted from the driving chip to the far-end pin in advance, and taking the time obtained by the test as the set time.
In some embodiments, the third common voltage signal is twice the first common voltage signal.
In some embodiments, the method of driving a display panel further includes:
transmitting a closing signal to a switch assembly in the electrical property testing stage and in the process of collecting the voltage on the far-end pin, wherein the switch assembly is arranged between the electrical property testing pin and the far-end pin, and the closing signal is used for closing the switch assembly;
and transmitting a starting signal to the switch component in the process of transmitting the second common voltage signal to the common electrode through the electrical property test pin and the far-end pin, wherein the starting signal is used for starting the switch component.
In some embodiments, the method of driving a display panel further includes:
and in the display stage, adjusting the duty ratio of a scanning driving signal for driving the display device.
In a third aspect of the embodiments of the present application, there is provided a controller, including:
a memory having a computer program stored therein;
a processor for implementing the method of driving a display panel according to the second aspect when executing the computer program.
In a fourth aspect of the embodiments of the present application, there is provided a display device including:
a display panel as described in the first aspect, and/or a controller as described in the third aspect.
According to the display panel, the driving method and the related equipment provided by the embodiment of the application, the far-end pin is arranged at one end of the public electrode far away from the driving chip, and the public voltage signal provided by the driving chip is transmitted to the far-end pin through the time-sharing multiplexing electrical property testing pin, so that a connecting wire does not need to be arranged for the far-end pin independently, the connecting wire with a display device can be shared, and the space occupied by circuit arrangement can be saved. The electrical test pins are used for transmitting electrical test signals in the electrical test stage of the display panel, and the electrical test pins transmit public voltage signals in the display stage of the display panel, so that time-sharing multiplexing can be realized for the electrical test pins, the test pins and connecting wires do not need to be arranged independently, and the number of the test pins and the occupied space for arrangement are saved. In addition, the common voltage signal can be transmitted from the near end of the common electrode to the far end through the near end pin, the common voltage signal can also be transmitted from the far end of the common electrode to the near end through the far end pin synchronously, the attenuation of the common voltage signal transmitted from the far end of the common electrode to the near end and the attenuation of the common voltage signal transmitted from the near end to the far end can be mutually compensated, the problem that the common voltage signals at the far end and the near end of the common electrode are inconsistent is solved, the driving force of the common voltage signal at the far end of the common electrode is improved, the stripe defect of the display panel can be improved or even eliminated, and the defect rate of the display panel is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the present application;
FIG. 3 is a timing diagram of a common voltage signal according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic structural block diagram of a controller provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations on the technical solutions of the embodiments of the present specification, and the technical features in the embodiments and examples of the present specification may be combined with each other without conflict.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "two or more" includes the case of two or more.
With the continuous development of display technologies, touch technologies are gradually integrated with display technologies, and a touch substrate does not need to be separately arranged in a display device to realize a touch function. The existing touch function is usually realized through a touch electrode, and the capacitance change of the touch electrode can reflect the touch position of a user, so that the touch operation positioning of the user is realized. However, the touch electrode is usually block-shaped, and in the process of displaying on the display panel, the common voltage on the common electrode is attenuated in the transmission process, and the attenuated voltage is further affected by the touch electrode, so that a stripe display failure is easily generated at the far end of the transmission of the common voltage.
In view of the above, embodiments of the present disclosure provide a display panel, a driving method and a related apparatus, which can improve the display defect of the stripe.
In a first aspect of an embodiment of the present application, a display panel is provided, and fig. 1 is a schematic structural diagram of the display panel provided in the embodiment of the present application. As shown in fig. 1, a display panel provided in an embodiment of the present application includes: the common electrode 100, one end of the common electrode 100 close to the driving chip 200 is electrically connected to at least one near-end pin 110, and one end of the common electrode 100 far from the driving chip 200 is electrically connected to at least one far-end pin 120. It should be noted that the common electrode 100 generally serves as a carrier of a common voltage signal of the display device 400 in the display panel, and the common voltage signal may be from the driving chip 200, and the driving chip 200 is used for driving the display device 400 in the display panel to perform display. The common voltage signal on the common electrode 100 can also be used as a reference voltage of the touch electrode on the display panel, and usually a constant voltage is required as the reference voltage in the self-capacitance touch mode, so the common voltage signal on the common electrode 100 can be used as the reference voltage in the self-capacitance touch mode. The common electrode 100 may cover a display area of the display panel, the common electrode 100 may cover the display area on the whole surface, and a part of the device and circuit areas need to be punched in the common electrode 100. The electrical test pin 300, the electrical test pin 300 is used for transmitting an electrical test signal to the display device 400 of the display panel, and the electrical test pin 300 is electrically connected to the remote pin 120. In the process of manufacturing the display panel, after the display device 400 is manufactured, the electrical performance and the display function of the display device 400 generally need to be tested, the electrical test signal can be transmitted to the display device 400 through the electrical test pin 300, the electrical test signal can drive the display of the display device 400, different electrical test signals can drive the display device 400 to display in different states, and whether the electrical performance and the display function of the display device 400 are normal can be determined by observing the display effect of the display panel under different display pictures. The driving chip 200 is used for transmitting a common voltage signal to the common electrode 100 through the near terminal pin 110, and transmitting a common voltage signal to the common electrode 100 through the electrical property test pin 300 and the far terminal pin 120. The driving chip 200 may transmit the common voltage signal to the remote pin 120 through the electrical test pin 300, and further transmit the common voltage signal to the common electrode 100 through the remote pin 120, and may perform time division multiplexing on the electrical test pin 300, so that the electrical test pin 300 is used to transmit the electrical test signal in the electrical test stage of the display panel, and the electrical test pin 300 transmits the common voltage signal in the display stage of the display panel. Usually, the number of the electrical test pins 300 is plural, and the electrical test pins are respectively used for transmitting electrical test signals to the display devices 400 in different rows or columns, and the electrical test pin connected to the display device far away from the driving chip 200 can be selected as a common pin electrically connected to the far-end pin 120, so that the electrical connection line between the electrical test pin 300 and the far-end pin 120 does not need to be separately arranged, the connection line with the display device 400 can be shared, and the space occupied by circuit arrangement can be saved.
It should be noted that the common voltage signal can be transmitted from the near end to the far end of the common electrode 100 through the near end pin 110, the common voltage signal can be transmitted from the far end to the near end of the common electrode 100 through the far end pin 120 synchronously, and the attenuation of the common voltage signal transmitted from the far end to the near end of the common electrode 100 and the attenuation of the common voltage signal transmitted from the near end to the far end can be compensated for each other.
It should be noted that the display panel provided in the embodiment of the present application may be a passive light emitting liquid crystal display panel or an active light emitting organic light emitting display panel, and the embodiment of the present application is not particularly limited. In the liquid crystal display panel, the display device 400 may be a driving device that drives the liquid crystal to rotate, and the driving device may include a thin film transistor; in the organic light emitting display panel, the display device 400 may include a driving component and a light emitting device, the driving component is used for driving the light emitting component to emit light, and the driving component may include at least one TFT (thin film transistor), for example, 7 TFTs and 1 capacitor or 2 TFTs and 1 capacitor, and the embodiment of the present application is not particularly limited.
It should be noted that the number of the proximal pins 110 shown in fig. 1 is 2, and the number of the distal pins 120 is 2, and fig. 1 is only schematic and is not intended to be a specific limitation of the present application.
It should be noted that, in general, the near end of the common electrode refers to an end of the common electrode close to the driving chip, the far end of the common electrode refers to an end of the common electrode far from the driving chip, and the driving chip is usually disposed on one side of the display panel, so that the common voltage signal output from the driving chip is transmitted from the near end of the common electrode to the far end. Signal attenuation can occur in the process of transmitting the common voltage signal from the near end to the far end of the common electrode, which easily causes the inconsistency of the common voltage signal between the far end and the near end of the common electrode, the driving force of the common voltage signal transmitted to the far end of the common electrode is insufficient, and then the influence of the progressive scanning signal of the display device is superposed, or the superposition of the pulling of the voltage signal by the touch electrode can cause the bad stripe at the far end (the side far away from the driving chip) of the display panel. The severity of the stripe is different according to the model of different display panels.
In view of the above problems, in the display panel provided in the embodiment of the present application, the far-end pin 120 is disposed at one end of the common electrode 100 away from the driving chip, and the time-division multiplexing electrical property test pin 300 transmits the common voltage signal provided by the driving chip 200 to the far-end pin 120, so that a connection line does not need to be separately disposed for the far-end pin 120, the connection line with the display device 400 can be shared, and the space occupied by line arrangement can be saved. The electrical test pins 300 are used for transmitting electrical test signals in an electrical test stage of the display panel, and the electrical test pins 300 transmit common voltage signals in a display stage of the display panel, so that the electrical test pins 300 can realize time-sharing multiplexing without separately arranging test pins and connecting wires, thereby saving the number of the test pins and the occupied space for arrangement. In addition, the common voltage signal can be transmitted from the near end to the far end of the common electrode 100 through the near end pin 110, and the common voltage signal can also be transmitted from the far end to the near end of the common electrode 100 through the far end pin 120 synchronously, so that the attenuation of the common voltage signal transmitted from the far end to the near end of the common electrode 100 and the attenuation of the common voltage signal transmitted from the near end to the far end can be mutually compensated, the problem that the common voltage signals at the far end and the near end of the common electrode are inconsistent is solved, the driving force of the common voltage signal at the far end of the common electrode 100 is improved, the stripe defect of the display panel can be improved and even eliminated, and the reject ratio of the display panel is reduced.
In some embodiments, the common voltage signal Vcom includes a first common voltage signal Vcom1 and a second common voltage signal Vcom2, the second common voltage signal Vcom2 being greater than the first common voltage signal Vcom 1; the driving chip 200 is used for transmitting a first common voltage signal Vcom1 to the common electrode 100 through the near-end pin 110, and transmitting a second common voltage signal Vcom2 to the common electrode 100 through the electrical property test pin 300 and the far-end pin 120. In a conventional display panel, the third common voltage signal Vcom3 is transmitted from the near end of the common electrode to the far end, and the third common voltage signal Vcom3 is transmitted from the near end pin 110 to the far end pin 120 through the common electrode 100, and the voltage signal attenuation is Δ Vcom, that is, the amount of voltage signal attenuation of Δ Vcom occurs in the process of transmitting the third common voltage signal Vcom3 from the near end to the far end of the common electrode. The second common voltage signal Vcom2 can be determined by the amount of voltage that the third common voltage signal Vcom3 attenuates during transmission from the near-end pin 110 to the far-end pin 120, and both the first common voltage signal Vcom1 and the second common voltage signal Vcom2 are smaller than the third common voltage signal Vcom 3.
For example, the third common voltage signal Vcom3 may be twice as large as the first common voltage signal Vcom1, that is, Vcom3 is 2Vcom 1; the second common voltage signal may be a sum of the first common voltage signal and the decay voltage, i.e., Vcom2 ═ Vcom1+ Δ Vcom. Therefore, in the display phase, the driving chip 200 outputs a first common voltage signal Vcom1 and a second common voltage signal Vcom2, the first common voltage signal Vcom1 is transmitted to the common electrode 100 via the near-end pin 110, and the second common voltage signal Vcom2 is transmitted to the common voltage signal via the far-end pin 120. The first common voltage signal Vcom1 is attenuated when the near-end pin 110 transmits to the far-end pin 120 through the common electrode 100, and the common voltage signal received by the far-end pin 120 and transmitted from the near-end pin 110 is Vcom1- Δ Vcom, so that the total common voltage signal received by the far-end pin 120 is Vcom2+ Vcom1- Δ Vcom, which is 2Vcom 1; the second common voltage signal Vcom2 is attenuated in the process of being transmitted from the far-end pin 120 to the near-end pin 110 through the common electrode 100, and the common voltage signal received by the near-end pin 110 and transmitted from the far-end pin 120 is Vcom2- Δ Vcom1, and the total common voltage signal received by the near-end pin 110 is Vcom1+ Vcom1 — 2Vcom1, so the total common voltage signals received by the near-end pin 110 and the far-end pin 120 are both 2Vcom1, and the common voltage signals at the near end and the far end are identical, that is, the total common voltage signal received by the common electrode 100 is the third common voltage signal Vcom 3.
Compared with the display panel which is separately transmitted from the near end to the far end of the common electrode 100, the display panel provided by the embodiment of the application can transmit the common voltage signal from the near end to the far end of the common electrode 100 and simultaneously transmit the common voltage signal from the far end to the near end, so that the total common voltage signal received by the common electrode 100 is ensured to be unchanged, the driving capability of the common electrode is not influenced, voltage inconsistency caused by attenuation of the common voltage signals at the near end and the far end can be mutually compensated, the common voltage signals at the far end and the near end of the common electrode 100 can tend to be consistent, compared with the prior art, the driving force of the common voltage signal at the far end of the common electrode 100 is improved, the stripe defect of the display panel is improved or even eliminated, and the reject ratio of the display panel is reduced.
In some embodiments, the start time of the first common voltage signal transmitted by the driving chip 200 is delayed by a set time with respect to the start time of the second common voltage signal. Because the second common voltage signal and the first common voltage signal are both sent from the driving chip 200, the distance from the near-end pin 110 to the driving chip 200 is less than the distance from the far-end pin 120 to the driving chip 200, and the time required for the second common voltage signal to be transmitted from the driving chip 200 to the far-end pin 120 is longer than the time required for the first common voltage signal to be transmitted from the driving chip 200 to the near-end pin 110, the second common voltage signal needs to be sent from the driving chip 200 in advance, and the first common voltage signal needs to be sent out with a delay, so that the first common voltage signal and the second common voltage signal can be ensured to reach the common electrode 100 at the same time, and further, the attenuation process of the first common voltage signal in the process of being transmitted from the near-end pin 110 to the far-end pin 120 and the attenuation process of the second common voltage signal in the process of being transmitted from the far-end pin 120 to the near-end pin 110 tend to be consistent, further achieves the effect of making the common voltage signals at the far end and the near end of the common electrode 100 tend to be consistent, improves or even eliminates the stripe badness of the display panel, and reduces the badness ratio of the display panel.
In some embodiments, the set time is determined by the time that the common voltage signal is transmitted from the driver chip 200 to the remote pin 120. The time that the second common voltage signal reaches the far-end pin 120 after being emitted from the driving chip 200 may be recorded, and the recorded time may be used as the set time.
In some embodiments, a switch element is disposed between the electrical test pin 300 and the distal pin 120. The switching element may include a thin film transistor, a gate of which may receive a turn-off signal or a turn-on signal, the turn-on signal may be used to turn on the thin film transistor, and the turn-off signal may be used to turn off the thin film transistor. In the case of transmitting the electrical test signal to the display device 400 through the electrical test pin 300, the switching element is configured to receive a turn-off signal, and the turn-off signal is configured to turn off the switching element; in the case of transmitting the common voltage signal to the common electrode 100 through the electrical property test pin 300 and the remote pin 120, the switch element is configured to receive a turn-on signal, and the turn-on signal is configured to turn on the switch element. Due to the arrangement of the switch assembly, the time-sharing multiplexing of the electrical test pins 300 in the electrical test stage and the display stage can be realized, the test pins and connecting wires do not need to be arranged independently, and the number of the test pins and the occupied space for arrangement are saved.
For example, fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present application. As shown in fig. 2, a first transistor M1 is disposed between the electrical test pin 300 and the distal pin 120. In the electrical testing stage, the first switch control pin 500 may transmit a turn-off signal to the gate of the first transistor M1 to turn off the first transistor M1, the second switch control pin DS transmits a turn-on signal to the gate of the second transistor M2 to turn on the second transistor M2, and the electrical testing pin 300 may transmit an electrical testing signal to the display device 400 through the turned-on second transistor M2 to light up the display device 400, so as to test the display function of the display device 400. In the electrical testing stage, the electrical testing pins transmitting the electrical testing signals to the display device 400 may be distinguished according to the color classification of the display device. For example, the display device 400 may include a red display device, a green display device, and a blue display device, the electrical test pin 300 as a time-division multiplexing device may be used to transmit an electrical test signal to the red display device, the first test pin D1 may be used to transmit an electrical test signal to the green display device, and the second test pin D2 may be used to transmit an electrical test signal to the blue display device. The electrical test pin 300, the first test pin D1, the second test pin D2, and the second switch control pin DS may be disposed on both sides of the display panel. During the display period, the first switch control pin 500 may transmit a turn-on signal to the gate of the first transistor M1 to turn on the first transistor M1, and the driving chip 200 transmits a first common voltage signal to the common electrode 100 through the near end pin 110 and transmits a second common voltage signal to the common electrode 100 through the electrical test pin 300, the first transistor M1 and the far end pin 120, respectively, so as to perform display driving.
It should be noted that the proximal pin 110 and the distal pin 120 may be electrically connected to the common electrode line 130, the common electrode line 130 is disposed around the common electrode 100, and the common electrode line 130 may be electrically connected to the common electrode 100 through a connecting lead or a via. The proximal pin 110 and the distal pin 120 may be in a linear shape, and the proximal pin 110 and the distal pin 120 may be integrated with the common electrode line 130, and may be prepared in the same process flow or may be prepared in different process flows. The proximal pin 110, the distal pin 120, the common electrode line 130 and the common electrode 100 may be prepared through the same process, which is not specifically limited in this embodiment. The common electrode 100 may be divided into a plurality of sub-regions, and each sub-region corresponds to at least one sub-pixel, which is not particularly limited in the embodiments of the present application.
It should be noted that the switch module may include a plurality of thin film transistors, and the plurality of thin film transistors may form current compensation, so as to prevent the thin film transistors from generating electrical drift along with the accumulation of the use time.
For example, fig. 3 is a timing diagram of a common voltage signal according to an embodiment of the present application. As shown in fig. 3, in the display phase, after the driver chip 200 transmits the Start signal Start to the switch assembly, the second common voltage signal Vcom2 is transmitted to the far-end pin 120, and after a set time T, the first common voltage signal Vcom1 is transmitted to the near-end pin 110. As shown in fig. 3, the transmission sequence of the first common voltage signal Vcom1 on the common electrode 100 may be from row 1 to row N, the transmission sequence of the second common voltage signal Vcom2 on the common electrode 100 may be from row N to row 1, the row 1 is electrically connected to the near-end pin 110, the row N is electrically connected to the far-end pin 120, and N is a natural number greater than 0.
For example, the set time T may also be calculated, i.e., T ═ L/v, where L is the distance between the near-end pin 110 and the far-end pin 120. v is the current velocity, which is generally considered to be the velocity at which the electric field is established, i.e., the speed of light C0 is 299792458 m/s.
The display panel provided by the embodiment of the application can realize time division multiplexing of the electrical property test pin 300 in the electrical property test stage and the display stage by arranging the switch component between the electrical property test pin 300 and the far-end pin 120, and the test pin and the connecting wire do not need to be arranged separately, so that the number of the test pins and the occupied space for arrangement are saved.
In some embodiments, the number of proximal pins 110 is at least two and the number of distal pins 120 is at least two. The illustrations of fig. 1 and 2 are merely schematic and are not intended to limit the present application in any way.
In some embodiments, the display panel provided in the embodiments of the present application further includes: the touch control electrodes are electrically connected with the driving chip; the driving chip is used for driving the display device and the touch electrode. The driving chip can have both a display driving function and a touch driving function, and the touch electrode can generate a corresponding pulling effect on the common voltage signal in the transmission process of the common voltage signal on the common electrode, as shown in fig. 3, the transmission processes of the first common voltage signal Vcom1 and the second common voltage signal Vcom2 are not smooth and have certain fluctuation.
For example, the driving chip provided in the embodiment of the present application may adopt a TDDI (Touch and Display Driver Integration).
In a second aspect of the embodiments of the present application, a driving method of a display panel is provided, and fig. 4 is a schematic flowchart of the driving method of the display panel provided in the embodiments of the present application. As shown in fig. 4, a method for driving a display panel provided in an embodiment of the present application includes:
s101: in the electrical test stage, an electrical test signal is transmitted to the display device of the display panel through the electrical test pin. Referring to fig. 1, in a manufacturing process of a display panel, after a display device 400 is manufactured, electrical performance and a display function of the display device 400 generally need to be tested, an electrical test signal may be transmitted to the display device 400 through an electrical test pin 300, the electrical test signal may drive display of the display device 400, different electrical test signals may drive the display device 400 to display in different states, and whether the electrical performance and the display function of the display device 400 are normal may be determined by observing display effects of the display panel in different display frames.
S201: in the display stage, a driving chip is utilized, a common voltage signal is transmitted to the common electrode through the near-end pin, and the common voltage signal is transmitted to the common electrode through the electrical property testing pin and the far-end pin, wherein one end of the common electrode, close to the driving chip, is electrically connected with at least one near-end pin, one end of the common electrode, far away from the driving chip, is electrically connected with at least one far-end pin, and the electrical property testing pin is electrically connected with the far-end pin. With reference to fig. 1, the driving chip 200 may transmit the common voltage signal to the remote pin 120 through the electrical test pin 300, and further transmit the common voltage signal to the common electrode 100 through the remote pin 120, and may perform time division multiplexing on the electrical test pin 300, so as to implement that the electrical test pin 300 is used for transmitting the electrical test signal during the electrical test phase of the display panel, and the electrical test pin 300 transmits the common voltage signal during the display phase of the display panel. Usually, the number of the electrical test pins 300 is plural, and the electrical test pins are respectively used for transmitting electrical test signals to the display devices 400 in different rows or columns, and the electrical test pin connected to the display device far away from the driving chip 200 can be selected as a common pin electrically connected to the far-end pin 120, so that the electrical connection line between the electrical test pin 300 and the far-end pin 120 does not need to be separately arranged, the connection line with the display device 400 can be shared, and the space occupied by circuit arrangement can be saved.
It should be noted that the electrical testing stage using the electrical testing pins 300 is usually performed before the display stage, and the electrical testing stage is usually performed during the manufacturing process of the display panel, i.e., the display device 400 can be tested after being manufactured. The display stage is performed after the driver chip 200 is bound, and the driver chip 200 may be used to perform a comprehensive test on the display panel, or during a use process after the display panel is manufactured.
For example, the electrical test signal may be transmitted to the electrical test pins 300 through the test probes of the electrical test fixture. The common voltage signal may be burned in the driving chip 200 in the form of a programming code, or may be provided to the driving chip 200 through a motherboard control system, which is not specifically limited in the embodiment of the present application.
In the driving method of the display panel provided by the embodiment of the application, the common voltage signal provided by the driving chip 200 is transmitted to the far-end pin 120 through the time-division multiplexing electrical property test pin 300, so that a connection line does not need to be separately arranged for the far-end pin 120, the connection line with the display device 400 can be shared, and the space occupied by line arrangement can be saved. The electrical test pins 300 are used for transmitting electrical test signals in an electrical test stage of the display panel, and the electrical test pins 300 transmit common voltage signals in a display stage of the display panel, so that the electrical test pins 300 can realize time-sharing multiplexing without separately arranging test pins and connecting wires, thereby saving the number of the test pins and the occupied space for arrangement. In addition, the common voltage signal can be transmitted from the near end to the far end of the common electrode 100 through the near end pin 110, and the common voltage signal can also be transmitted from the far end to the near end of the common electrode 100 through the far end pin 120 synchronously, so that the attenuation of the common voltage signal transmitted from the far end to the near end of the common electrode 100 and the attenuation of the common voltage signal transmitted from the near end to the far end can be mutually compensated, the problem that the common voltage signals at the far end and the near end of the common electrode are inconsistent is solved, the driving force of the common voltage signal at the far end of the common electrode 100 is improved, the stripe defect of the display panel caused by the inconsistency of the common voltage signals at the far end and the near end on the common electrode 100 can be improved and even eliminated, and the reject ratio of the display panel is reduced.
In some embodiments, the common voltage signal includes a first common voltage signal and a second common voltage signal, the second common voltage signal being greater than the first common voltage signal. Step S201 may include:
in the display stage, a first common voltage signal is transmitted to the common electrode through the near-end pin and a second common voltage signal is transmitted to the common electrode through the electrical property test pin and the far-end pin by using the driving chip.
Specifically, in the display stage, the driving chip is used to transmit a first common voltage signal to the common electrode through the near-end pin and transmit a second common voltage signal to the common electrode through the electrical test pin and the far-end pin, and the method includes:
in the display stage, a driving chip is used for transmitting a second common voltage signal to the common electrode through the electrical property test pin and the far-end pin;
after the set time, the driving chip is used for transmitting a first common voltage signal to the common electrode through the near-end pin.
For example, referring to fig. 3, in the display phase, after the driver chip 200 transmits the Start signal Start to the switch assembly, the second common voltage signal Vcom2 is transmitted to the far-end pin 120, and after a set time T, the first common voltage signal Vcom1 is transmitted to the near-end pin 110. As shown in fig. 3, the transmission sequence of the first common voltage signal Vcom1 on the common electrode 100 may be from row 1 to row N, the transmission sequence of the second common voltage signal Vcom2 on the common electrode 100 may be from row N to row 1, the row 1 is electrically connected to the near-end pin 110, the row N is electrically connected to the far-end pin 120, and N is a natural number greater than 0.
In some embodiments, the method for driving a display panel provided in the embodiments of the present application further includes:
and testing the time of the second common voltage signal transmitted from the driving chip to the far-end pin in advance, and taking the time obtained by the test as the set time.
Compared with the method for driving the display panel, which separately transmits the common voltage signal from the near end to the far end of the common electrode 100, the method for driving the display panel, which is provided by the embodiment of the application, transmits the common voltage signal from the far end to the near end while transmitting the common voltage signal from the near end to the far end of the common electrode 100, can ensure that the total common voltage signal received by the common electrode 100 is unchanged, and the driving capability of the common electrode is not affected, and can also compensate voltage inconsistency caused by attenuation of the common voltage signals of the near end and the far end, so that the common voltage signals of the far end and the near end of the common electrode 100 tend to be consistent, and compared with the prior art, the driving force of the common voltage signal at the far end of the common electrode 100 is improved, and even the stripe defect of the display panel is eliminated, and the reject ratio of the display panel is reduced.
In some embodiments, before the driving chip transmits the second common voltage signal to the common electrode through the electrical test pin and the remote pin in the display stage, the method further includes:
and transmitting a third common voltage signal to the common electrode through the near-end pin, and collecting the voltage on the far-end pin to obtain a far-end common voltage.
And performing difference operation on the third common voltage signal and the far-end common voltage to obtain attenuation voltage. Illustratively, setting the third common voltage signal Vcom3 to be transmitted from the near-end pin 110 to the far-end pin 120 through the common electrode 100 causes voltage signal attenuation, which is Δ Vcom, that is, the attenuation amount of the voltage signal Δ Vcom occurs during the transmission of the third common voltage signal Vcom3 from the near-end to the far-end of the common electrode.
And adding the first common voltage signal and the attenuation voltage to obtain a second common voltage signal. The second common voltage signal Vcom2 can be determined by the amount of voltage that the third common voltage signal Vcom3 attenuates when it is transmitted from the near-end pin 110 to the far-end pin 120, and Vcom2 is Vcom1+ Δ Vcom. Illustratively, the third common voltage signal is twice the first common voltage signal, i.e., Vcom3 is 2Vcom 1.
Illustratively, in the display phase, the driving chip 200 outputs a first common voltage signal Vcom1 and a second common voltage signal Vcom2, the first common voltage signal Vcom1 is transmitted to the common electrode 100 via the near-end pin 110, and the second common voltage signal Vcom2 is transmitted to the common voltage signal via the far-end pin 120. The first common voltage signal Vcom1 is attenuated when the near-end pin 110 transmits to the far-end pin 120 through the common electrode 100, and the common voltage signal received by the far-end pin 120 and transmitted from the near-end pin 110 is Vcom1- Δ Vcom, so that the total common voltage signal received by the far-end pin 120 is Vcom2+ Vcom1- Δ Vcom, which is 2Vcom 1; the second common voltage signal Vcom2 is attenuated in the process of being transmitted from the far-end pin 120 to the near-end pin 110 through the common electrode 100, and the common voltage signal received by the near-end pin 110 and transmitted from the far-end pin 120 is Vcom2- Δ Vcom1, and the total common voltage signal received by the near-end pin 110 is Vcom1+ Vcom1 — 2Vcom1, so the total common voltage signals received by the near-end pin 110 and the far-end pin 120 are both 2Vcom1, and the common voltage signals at the near end and the far end are identical, that is, the total common voltage signal received by the common electrode 100 is the third common voltage signal Vcom 3.
In some embodiments, the method for driving a display panel provided in the embodiments of the present application further includes:
and transmitting a closing signal to the switch assembly in the electrical property testing stage and the process of collecting the voltage on the far-end pin, wherein the switch assembly is arranged between the electrical property testing pin and the far-end pin, and the closing signal is used for closing the switch assembly. The switching component may include a thin film transistor. For example, as shown in fig. 2, a first transistor M1 is disposed between the electrical test pin 300 and the distal pin 120. In the electrical testing stage, the first switch control pin 500 may transmit a turn-off signal to the gate of the first transistor M1 to turn off the first transistor M1, the second switch control pin DS transmits a turn-on signal to the gate of the second transistor M2 to turn on the second transistor M2, and the electrical testing pin 300 may transmit an electrical testing signal to the display device 400 through the turned-on second transistor M2 to light up the display device 400, so as to test the display function of the display device 400. In the electrical testing stage, the electrical testing pins transmitting the electrical testing signals to the display device 400 may be distinguished according to the color classification of the display device. For example, the display device 400 may include a red display device, a green display device, and a blue display device, and the electrical test pin 300, which is time-division multiplexing, may be used to transmit an electrical test signal to the red display device, to the green display device through the first test pin D1, and to the blue display device through the second test pin D2. The electrical test pin 300, the first test pin D1, the second test pin D2, and the second switch control pin DS may be disposed on both sides of the display panel.
And transmitting a starting signal to the switch assembly in the process of transmitting a second common voltage signal to the common electrode through the electrical property test pin and the far-end pin, wherein the starting signal is used for starting the switch assembly. For example, in the display phase, the first switch control pin 500 may transmit an on signal to the gate of the first transistor M1 to turn on the first transistor M1, and the driving chip 200 transmits a first common voltage signal to the common electrode 100 through the near-end pin 110 and transmits a second common voltage signal to the common electrode 100 through the electrical test pin 300, the first transistor M1 and the far-end pin 120, respectively, so as to perform display driving.
It should be noted that the on signal and the off signal may be burned in the driver chip 200 in the form of programming codes, or may be provided to the driver chip 200 through a motherboard control system, which is not specifically limited in the embodiment of the present application.
According to the driving method of the display panel, the turn-off signal is transmitted to the switch assembly in the electrical property testing stage, and the turn-on signal is transmitted to the switch assembly in the display stage, so that time-sharing multiplexing of the electrical property testing pins 300 in the electrical property testing stage and the display stage can be achieved, the testing pins and the connecting wires do not need to be arranged independently, and the number of the testing pins and the occupied space for arrangement are saved.
In some embodiments, the method for driving a display panel provided in the embodiments of the present application further includes:
in the display phase, the duty cycle of a scanning drive signal driving the display device is adjusted. Scanning drive signal can transmit to display device's scanning signal line through driver chip, in the demonstration stage, scanning drive signal can drive display device's scanning signal end and light line by line, scanning drive signal's duty cycle size can influence the stripe and show badly, duty cycle through properly adjusting scanning drive signal, can show badly to the stripe and carry out corresponding improvement, according to the difference of different display panel size models, the improvement effect is also very different, mainly with display device, drive circuit and touch electrode's design are relevant. For example, a product of 10.95 inches can be taken as an example, the duty ratio of the scanning driving signal is adjusted from 25% to 12%, and the stripe defect can be effectively improved.
It should be noted that, because the TDDI chip is used, the touch electrode has a certain pulling effect on the common voltage signal, and the attenuation effect of the common voltage signal on the common electrode is combined, which is likely to cause a serious display stripe defect, and the duty ratio of the scanning driving signal can correspondingly improve the influence of the touch electrode on the stripe defect.
According to the driving method of the display panel, the transmission of the far-end public voltage signal is combined with the duty ratio of the scanning driving signal, and a stronger effect can be achieved on the improvement of poor stripe display.
In a third aspect of the embodiments of the present application, a controller is provided, and fig. 5 is a schematic structural block diagram of the controller provided in the embodiments of the present application. As shown in fig. 5, a controller provided in an embodiment of the present application includes: a memory 800, the memory 800 having stored therein a computer program; a processor 900, the processor 900 being adapted to implement the method of driving a display panel according to the second aspect when the computer program is executed.
In a fourth aspect of the embodiments of the present application, a display device is provided, and fig. 6 is a schematic structural diagram of the display device provided in the embodiments of the present application. As shown in fig. 6, a display device provided in an embodiment of the present application includes: a display panel 1000 as described in the first aspect, and/or a controller 2000 as described in the third aspect. The controller 2000 may be disposed on a control motherboard of the display device, and the controller 2000 may also be integrated in the driving chip, which is not specifically limited in the embodiment of the present application.
The display device provided in the embodiment of the present application may include a smart phone, a tablet computer, a notebook computer, a television, or other displays, and the embodiment of the present application is not particularly limited.
It should be noted that, in the foregoing embodiments, the description of each embodiment has an emphasis, and reference may be made to the related description of other embodiments for a part that is not described in detail in a certain embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-readable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Embodiments of the present application further provide a computer program product, which includes computer software instructions, and when the computer software instructions are run on a processing device, the processing device is caused to execute a flow of a driving method of a display panel.
The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. A computer-readable storage medium may be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is only a logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.
While preferred embodiments of the present specification have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all changes and modifications that fall within the scope of the specification.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the specification is intended to include such modifications and variations.

Claims (20)

1. A display panel, comprising:
the common electrode, one end of the said common electrode close to the driving chip is electrically connected with at least one near-end pin, one end of the said common electrode far away from the said driving chip is electrically connected with at least one far-end pin;
the electrical test pin is used for transmitting an electrical test signal to a display device of the display panel and is electrically connected with the far-end pin;
the drive chip is used for transmitting a common voltage signal to the common electrode through the near-end pin and transmitting the common voltage signal to the common electrode through the electrical property test pin and the far-end pin.
2. The display panel according to claim 1, wherein the common voltage signal includes a first common voltage signal and a second common voltage signal, the second common voltage signal being greater than the first common voltage signal;
the drive chip is used for transmitting the first common voltage signal to the common electrode through the near-end pin and transmitting the second common voltage signal to the common electrode through the electrical property test pin and the far-end pin.
3. The display panel of claim 2, wherein the second common voltage signal is determined by an amount of voltage that is attenuated by a third common voltage signal passing from the near pin to the far pin, wherein the first common voltage signal and the second common voltage signal are both less than the third common voltage signal.
4. The display panel according to claim 2, wherein a start time of the first common voltage signal transmitted by the driving chip is delayed by a set time with respect to a start time of the second common voltage signal.
5. The display panel according to claim 4, wherein the set time is determined by a time elapsed for the common voltage signal to be transmitted from the driving chip to the remote terminal.
6. The display panel of claim 1, wherein a switch element is disposed between the electrical test pin and the distal pin.
7. The display panel according to claim 6, wherein the switch element is configured to receive a turn-off signal when the electrical test signal is transmitted to the display device through the electrical test pin, and the turn-off signal is configured to turn off the switch element;
and under the condition that the common voltage signal is transmitted to the common electrode through the electrical property test pin and the far-end pin, the switch component is used for receiving a starting signal, and the starting signal is used for starting the switch component.
8. The display panel according to claim 7, wherein the switch component comprises a thin film transistor, and a gate of the thin film transistor is used for receiving the off signal or the on signal.
9. The display panel according to claim 1, wherein the number of the near-end pins is at least two, and the number of the far-end pins is at least two.
10. The display panel according to claim 1, further comprising:
the touch electrodes are electrically connected with the driving chip;
the driving chip is used for driving the display device and the touch electrode.
11. A method of driving a display panel, comprising:
in the electrical property testing stage, transmitting an electrical property testing signal to a display device of the display panel through the electrical property testing pin;
in the display stage, a driving chip is used for transmitting a public voltage signal to a public electrode through a near-end pin, and transmitting the public voltage signal to the public electrode through an electrical property testing pin and a far-end pin, wherein one end of the public electrode close to the driving chip is electrically connected with at least one near-end pin, one end of the public electrode far away from the driving chip is electrically connected with at least one far-end pin, and the electrical property testing pin is electrically connected with the far-end pin.
12. The method for driving a display panel according to claim 11, wherein the common voltage signal includes a first common voltage signal and a second common voltage signal, the second common voltage signal being greater than the first common voltage signal;
in the display stage, transmitting a common voltage signal to a common electrode through a near-end pin and transmitting the common voltage signal to the common electrode through the electrical property test pin and a far-end pin by using a driving chip, including:
in a display stage, the driving chip is used for transmitting the first common voltage signal to the common electrode through the near-end pin and transmitting the second common voltage signal to the common electrode through the electrical property testing pin and the far-end pin.
13. The method according to claim 12, wherein the transmitting the first common voltage signal to the common electrode through the near-end pin and the second common voltage signal to the common electrode through the electrical property test pin and the far-end pin by using the driving chip in the display phase comprises:
in a display stage, the driving chip is used for transmitting the second common voltage signal to the common electrode through the electrical property testing pin and the far-end pin;
and after the set time, transmitting the first common voltage signal to the common electrode through the near-end pin by using the driving chip.
14. The method according to claim 13, wherein before the driving chip is used to transmit the second common voltage signal to the common electrode through the electrical test pin and the remote pin in the display stage, the method further comprises:
transmitting a third common voltage signal to the common electrode through the near-end pin, and collecting the voltage on the far-end pin to obtain a far-end common voltage;
performing difference operation on the third common voltage signal and the far-end common voltage to obtain an attenuation voltage;
and adding the first common voltage signal and the attenuation voltage to obtain a second common voltage signal.
15. The method for driving a display panel according to claim 13, further comprising:
and testing the time of the second common voltage signal transmitted from the driving chip to the far-end pin in advance, and taking the time obtained by the test as the set time.
16. The method for driving a display panel according to claim 14, wherein the third common voltage signal is twice the first common voltage signal.
17. The method for driving a display panel according to claim 14, further comprising:
transmitting a closing signal to a switch assembly in the electrical property testing stage and in the process of collecting the voltage on the far-end pin, wherein the switch assembly is arranged between the electrical property testing pin and the far-end pin, and the closing signal is used for closing the switch assembly;
and transmitting a starting signal to the switch component in the process of transmitting the second common voltage signal to the common electrode through the electrical property test pin and the far-end pin, wherein the starting signal is used for starting the switch component.
18. The method for driving a display panel according to claim 11, further comprising:
and in the display stage, adjusting the duty ratio of a scanning driving signal for driving the display device.
19. A controller, comprising:
a memory having a computer program stored therein;
a processor for implementing the method of driving a display panel according to any one of claims 11 to 18 when executing the computer program.
20. A display device, comprising:
the display panel of any one of claims 1-10, and/or the controller of claim 19.
CN202210422806.4A 2022-04-21 2022-04-21 Display panel, driving method and related equipment Active CN114664251B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106909253A (en) * 2017-03-07 2017-06-30 厦门天马微电子有限公司 Touch-control display panel and touch control display apparatus
CN106919287A (en) * 2017-03-08 2017-07-04 上海中航光电子有限公司 A kind of touch-control display panel and touch control display apparatus
US20200211428A1 (en) * 2018-12-28 2020-07-02 Xiamen Tianma Micro-Electronics Co., Ltd. Display panel and display apparatus
CN113380864A (en) * 2021-05-31 2021-09-10 京东方科技集团股份有限公司 Display device and mother board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106909253A (en) * 2017-03-07 2017-06-30 厦门天马微电子有限公司 Touch-control display panel and touch control display apparatus
CN106919287A (en) * 2017-03-08 2017-07-04 上海中航光电子有限公司 A kind of touch-control display panel and touch control display apparatus
US20200211428A1 (en) * 2018-12-28 2020-07-02 Xiamen Tianma Micro-Electronics Co., Ltd. Display panel and display apparatus
CN113380864A (en) * 2021-05-31 2021-09-10 京东方科技集团股份有限公司 Display device and mother board

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