WO2020151336A1 - Drive method and drive device used for display panel - Google Patents

Drive method and drive device used for display panel Download PDF

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Publication number
WO2020151336A1
WO2020151336A1 PCT/CN2019/118408 CN2019118408W WO2020151336A1 WO 2020151336 A1 WO2020151336 A1 WO 2020151336A1 CN 2019118408 W CN2019118408 W CN 2019118408W WO 2020151336 A1 WO2020151336 A1 WO 2020151336A1
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WO
WIPO (PCT)
Prior art keywords
display panel
current
feedback current
laser
preset
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PCT/CN2019/118408
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French (fr)
Chinese (zh)
Inventor
刘子涵
陈宥烨
吴永良
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咸阳彩虹光电科技有限公司
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Publication of WO2020151336A1 publication Critical patent/WO2020151336A1/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
    • 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
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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]
    • 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
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers

Definitions

  • the invention belongs to the technical field of display panels, and in particular relates to a driving method and a driving device for a display panel.
  • Laser is the light produced by the stimulated radiation of atoms. Compared with ordinary light sources, laser has better monochromaticity, high brightness and good directivity.
  • Laser pointer also known as laser pointer, is a pen-shaped transmitter designed to be portable, easy to hold, and processed by laser modules (light emitting diodes). It has been widely used in e-learning, presentations and reports. Speech etc.
  • liquid crystal display panels such as LEDs (light emitting diodes) and OLEDs (organic light emitting diodes) need to be used in conjunction with laser pointers to achieve better presentation effects.
  • LEDs light emitting diodes
  • OLEDs organic light emitting diodes
  • the present invention provides a driving method and a driving device for a display panel.
  • the technical problem to be solved by the present invention is realized through the following technical solutions:
  • An aspect of the present invention provides a driving method for a display panel, including:
  • the display state of the external laser irradiation area on the display panel is adjusted according to the position information.
  • applying a preset voltage signal to the preset area of the display panel within a predetermined time period includes:
  • the first voltage Vv is sent to the laser sensor located on the display panel in the first direction during the preset time period
  • the second voltage Vv is sent to the laser sensor located on the display panel in the second direction during the preset time period.
  • Voltage VH is sent to the laser sensor located on the display panel in the first direction during the preset time period
  • detecting the feedback current of the predetermined area includes:
  • the first feedback current Iv generated by the laser sensor according to the first voltage Vv and the second feedback current IH generated according to the second voltage VH are detected.
  • determining the position information of the external laser irradiation on the display panel according to the feedback current includes:
  • the first method is determined according to the first feedback current Iv
  • the first position coordinate m upward, and the second position coordinate n in the second direction is determined according to the second feedback current IH.
  • adjusting the display state of the external laser irradiation area on the display panel according to the position information includes:
  • the display state of the corresponding pixel unit at the irradiation position coordinate (m, n) is adjusted according to the irradiation position coordinate (m, n).
  • Another aspect of the present invention provides a driving device for a display panel, including:
  • a voltage generating module for loading a preset voltage signal to a preset area of the display panel within a predetermined period
  • a feedback current generating module configured to generate a feedback current according to the preset voltage signal in the preset area
  • a current detection module configured to detect the feedback current in the preset area and determine the position information of the external laser irradiation on the display panel;
  • the display control module is used to adjust the display state of the external laser irradiation area on the display panel according to the position information.
  • the voltage generating module includes a first voltage generating chip and a second voltage generating chip, wherein,
  • the first voltage generating chip is arranged on the source driver, and is used to send a first fixed voltage Vv to the feedback current generating module through a data line;
  • the second voltage generating chip is arranged on the gate driver and is used to send a second fixed voltage VH to the feedback current generating module through a scan line.
  • the feedback current generation module includes a plurality of laser sensors, and the plurality of laser sensors are uniformly arranged on the display panel and are electrically connected to the current detection module respectively, and are configured to perform according to
  • the first fixed voltage Vv generates a first feedback current Iv
  • the second fixed voltage VH generates a second feedback current IH.
  • the current detection module includes a plurality of first current detection chips and a plurality of second current detection chips, wherein,
  • the plurality of first current detection chips are arranged in parallel on the source driver, and each of the first current detection chips is connected to a corresponding laser sensor through a data line;
  • the plurality of second current detection chips are arranged in parallel on the gate driver, and each of the second current detection chips is connected to a corresponding laser sensor through a scan line.
  • the driving device further includes a plurality of first switches and a plurality of second switches, wherein:
  • Each of the first switches is respectively arranged between the corresponding first current detection module and the laser sensor, and is configured to switch on the first current detection module and the laser sensor within the predetermined time period;
  • Each of the second switches is respectively arranged between the corresponding second current detection module and the laser sensor, and is configured to switch on the second current detection module and the laser sensor within the predetermined time period.
  • the present invention has the following beneficial effects:
  • the driving device of the present invention can produce current changes when the laser is irradiated on the laser sensors.
  • the current detection modules located on the source driver and the gate driver change according to the current Determine the laser irradiation position on the display panel and change the display color of the pixel unit in the laser irradiation area, so as to facilitate the user to observe the laser projection position and improve the demonstration effect.
  • the display driving method of the present invention performs a laser position test between the frames normally displayed on the display panel, that is, when the scanning signal and the control signal are at a low level, which can well determine the laser projection position, improve the demonstration effect, and ensure that A normal display effect.
  • FIG. 1 is a flowchart of a driving method for a display panel provided by an embodiment of the present invention.
  • Fig. 2 is a schematic structural diagram of a display device
  • FIG. 3 is a timing diagram of the display device of FIG. 2;
  • FIG. 4 is a timing diagram of a driving method for a display panel provided by an embodiment of the present invention.
  • FIG. 5 is a block diagram of a display driving device provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a display driving device provided by an embodiment of the present invention.
  • 1-voltage generation module 2-feedback current generation module; 21-laser sensor; 3-current detection module; 4-display control module; 5-source driver; 6-data line; 7-gate driver; 8-scan Line; 9-display panel; 10-pixel unit; 11-first switch; 12-second switch; 13-first current detection chip; 14-second current detection chip.
  • FIG. 1 is a schematic structural diagram of a display device.
  • the display device includes a source driver (SD), a gate driver (GD), multiple data lines, and multiple scans. Line, and a display panel, wherein a plurality of pixel units are uniformly arranged on the display panel, and each pixel unit is respectively connected to a corresponding scan line and data line, and the scan line is used to transmit the scan driving signal generated by the gate driver To the pixel unit, the data line is used to transmit the data driving signal generated by the source driver to the pixel unit.
  • SD source driver
  • GD gate driver
  • multiple data lines and multiple scans.
  • Line and a display panel, wherein a plurality of pixel units are uniformly arranged on the display panel, and each pixel unit is respectively connected to a corresponding scan line and data line, and the scan line is used to transmit the scan driving signal generated by the gate driver To the pixel unit, the data line is used to transmit the data driving signal generated by the source driver to the pixel unit.
  • FIG. 2 is a timing diagram of the display device in FIG.
  • the kth frame in Figure 2 takes the n-1, n, and n+1 scan lines as an example.
  • the n-1 scan line outputs a scan signal G n-1 to the n-1th row of the pixel unit makes the TFT switch gate of the n-1th row of pixel unit turn on.
  • the data driving signal generated by the source driver is transmitted to the source of the TFT via the data line
  • the source data driving signal S n-1 is input to the pixel unit to complete a driving; then the nth scan line outputs a scan signal G n to the nth row pixel unit, so that the switching element TFT gate-pixel unit of the n-th row, the source driver generates a data driving signal transmitted through the data line S n to the source of the TFT, this time due to the TFT gate,
  • the data driving signal of the source is input to the pixel unit to complete one drive; then the n+1th scan line outputs a scan signal G n+1 to the pixel unit in the n+1th row, so that the n+1th row
  • the gate of the TFT switch element of the pixel unit is turned on.
  • the data driving signal S n+1 generated by the source driver is transmitted to the source of the TFT via the data line.
  • the TFT gate is turned on, the data of the source is driven
  • the signal is input into the pixel unit to complete a drive. After the scanning lines of each row in the kth frame are completely driven, the kth frame picture is finished to be displayed.
  • V blank vertical blanking period
  • the scan driving signal and the data driving signal are both low, and the display panel No display is performed. After the vertical blanking period ends, the display of the image of the k+1 frame is entered, and the driving process is the same as that of the k frame, which will not be repeated here.
  • FIG. 3 is a flowchart of a driving method for a display panel according to an embodiment of the present invention.
  • the driving method includes:
  • the S1 includes:
  • the preset period is a vertical blanking period between normal display periods of the display panel.
  • the source driver of this embodiment is provided with a first voltage generating circuit for generating the first voltage V v
  • the scan driver is provided with a second voltage generating circuit for generating the second voltage V H.
  • the first voltage V v is transmitted to the display panel through a data line
  • the second voltage V H is transmitted to the display panel through a scan line.
  • the S2 comprising: generating a first laser sensor to detect the feedback current I v according to the first voltage V v, and a second feedback current I H generated from the second voltage V H.
  • the display is provided with a plurality of uniformly laser sensor panel, while the laser sensor is connected to the respective data lines and scan lines, the data lines can be received through a first transmission voltage V v and the scanning lines are simultaneously transmitted through The second voltage V H.
  • the laser sensor can be a TFT element or a capacitive element, and its conductivity will change under the irradiation of natural light and laser. When a fixed voltage is input, the feedback current value will be different, so that it can be identified according to the change in the feedback current The position of the laser on the display panel.
  • the laser sensor is preferably a TFT element, which is located in the area formed by the scan line and the data line perpendicularly intersecting, and its gate and drain are connected to the scan line, and the source is connected To the data line.
  • the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
  • the source driver is provided with a plurality of first current detection chips
  • the gate driver is provided with a plurality of second current detection chips.
  • the first current detection chip, the first current detection chip The numbers of the two current detection chips and the laser sensors are equal.
  • a first current detection chip is connected to a corresponding laser sensor through a data line to receive the first feedback current I v in the direction of the data line; at the same time, a first current detection chip
  • the two current detection chips are connected to a corresponding laser sensor through a scan line to receive the second feedback current I H in the scan line direction perpendicular to the data line direction.
  • the S3 includes:
  • the first feedback current I v is greater than the preset first reference current I v0 and whether the second feedback current I H is greater than the preset second reference current I H0 , if not simultaneously satisfied, Then continue to send a fixed voltage to the display panel, if it is satisfied at the same time, determine the first position coordinate m in the first direction according to the first feedback current Iv; determine the first position coordinate m in the first direction according to the second feedback current IH The second position coordinate n in the two directions.
  • the first reference current I v0 and the second reference current I H0 are set .
  • the first reference current I v0 and the second reference current I H0 are usually set according to the feedback current generated by the laser sensor under natural light irradiation. To determine whether the laser sensor is irradiated by laser light.
  • the first current detection chip determines whether the first feedback current I v is greater than the preset first reference current I v0
  • the second current detection chip determines whether the second feedback current I H is greater than the preset second reference current If the current I H0 is satisfied at the same time, it can be considered that the laser sensors from the first reference current I v0 and the second reference current I H0 are irradiated by an external laser.
  • the corresponding first current detection chip obtains the first position coordinate m according to the first feedback current I v
  • the corresponding second current detection chip obtains the second position coordinate n according to the second feedback current I H.
  • FIG. 4 is a timing diagram of a driving method for a display panel provided by an embodiment of the present invention.
  • the timing control process is the same as the control process of the timing chart in FIG. 2, and will not be repeated here.
  • the scan lines of the n-1, n, and n+1th rows are
  • the driving process of the driving method of this embodiment in the vertical blanking period (V blank) between the kth frame and the k+1th frame is mainly described. Specifically, as shown in FIG.
  • each first voltage generating circuit sends a first voltage signal (G n- 1 , G n , G n+1 )
  • each second voltage generating circuit sends a second voltage signal (S m-1 , S m , S m+1 ) through the scan line
  • the laser sensor performs the first voltage signal (G n-1 , G n , G n+1 ) and the second voltage signal (S m-1 , S m , S m+1 ) respectively generate the first feedback current (IG n-1 , IG n , IG n+1 ) and the first feedback current (IS m-1 , IS m , IS m+1 ).
  • the feedback current IS m corresponding to the m- th data line and the feedback current IG n corresponding to the n-th scan line are both greater than the corresponding reference current, then the m- th data can be determined
  • the position where the line intersects with the nth scan line is the position irradiated by the external laser.
  • the S4 includes: sending a control instruction to the corresponding pixel unit according to the irradiation position coordinates (m, n) to adjust the display state of the pixel unit at the irradiation position coordinates (m, n).
  • the driving device for executing the driving method further includes a display control module.
  • step S3 the first position coordinate m and the second position coordinate n are obtained and sent to the display control module.
  • the display control module The first position coordinate m and the second position coordinate n determine the irradiation position coordinates (m, n) of the external laser. And according to the irradiation position coordinates (m, n), a control instruction is sent to adjacent pixel units to adjust the display state of the pixel units at the irradiation position coordinates (m, n).
  • each pixel unit on the display panel can be divided into multiple areas with each laser sensor as the center; for example, the laser sensor and its circumferentially adjacent multiple pixel units are divided into one area, when When detecting that the laser sensor receives external laser irradiation, the display control module controls the pixel units in the area to change the display state.
  • the distribution density of the laser sensors in the display panel that is, the size of the area, can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
  • the display control module controls the pixel unit at the irradiation position coordinates (m, n) to be displayed in red.
  • the irradiation position and its neighboring pixel units can be displayed in green or other colors, so that the human eyes can find the irradiation position more easily.
  • the display control module may display the laser irradiation position by adjusting the display brightness of the pixel unit at the irradiation position coordinates (m, n), for example, changing the display unit at the laser irradiation position It should be brighter or darker to display a difference from the adjacent sub-pixels, so that the user can observe the position of the laser and complete the laser positioning action.
  • the display driving method of the present invention performs a laser position test between the frames normally displayed on the display panel, that is, when the scanning signal and the control signal are at a low level, can determine the laser projection position well, improve the demonstration effect, and at the same time ensure normality The display effect.
  • FIG. 5 is a block diagram of a display driving device according to an embodiment of the present invention.
  • the driving device includes: a voltage generating module 1 for loading a preset voltage signal into a preset area of the display panel within a predetermined period of time; a feedback current generating module 2 for loading a preset voltage signal in the preset area according to the preset area
  • the voltage signal generates the feedback current;
  • the current detection module 3 is used to detect the feedback current and determine the position information of the laser irradiation on the display panel;
  • the display control module 4 is used to adjust the position information on the display panel according to the position information.
  • the display status of the external laser irradiation area is used to adjust the position information on the display panel according to the position information.
  • the voltage generating module 1 includes a first voltage generating chip and a second voltage generating chip, wherein the first voltage generating chip (not shown in the drawings) is arranged on the source driver 5 for passing the data line 6 Send the first fixed voltage V v to the feedback current generating module 2; the second voltage generating chip (not shown in the figure) is arranged on the gate driver 7 for sending the second fixed voltage V through the scan line 8. H to feedback current generation module 2.
  • the feedback current generation module 2 includes a plurality of laser sensors 21, and the plurality of laser sensors 21 are uniformly arranged on the display panel 9 and electrically connected to the current detection module 3 and the adjacent pixel unit 110, for fixing
  • the voltage V v generates the first feedback current I v
  • the second fixed voltage V H generates the second feedback current I H.
  • the laser sensor 21 can be a TFT element or a capacitive element, and its conductivity will change under the irradiation of natural light and laser.
  • the feedback current value will be different, which can be based on the change of the feedback current. Identify the position of the laser on the display panel.
  • the laser sensor 21 is preferably a TFT element, which is located in the area formed by the data line 6 and the scan line 8 perpendicularly intersecting. Further, the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs. For example, in FIG. 6, there is a laser sensor 21 corresponding to every four pixel units 10.
  • the current detection module 3 includes a plurality of first current detection chips 13 and a plurality of second current detection chips 14, wherein the plurality of first current detection chips 13 are arranged in parallel on the source driver 5, each A current detection chip 13 is connected to the corresponding laser sensor 21 through a data line 6; the plurality of second current detection chips 14 are arranged in parallel on the gate driver 7, and each second current detection chip 14 passes through a scan line 8. Connect to the corresponding laser sensor 21.
  • a first reference current I v0 is set in the plurality of first current detection chips 13 respectively
  • a second reference current I H0 is set in the plurality of second current detection chips 14 respectively, wherein the first reference current I v0 and the second reference current I H0 are usually set according to the feedback current generated by the laser sensor under natural light irradiation to determine whether the laser sensor is irradiated by laser light.
  • the numbers of the first current detection chip 13, the second current detection chip 14 and the laser sensor 21 are all equal, and a first current detection chip 13 is connected to a corresponding one through a data line 6
  • the laser sensor 21 to receive the first feedback current I v in the direction of the data line; at the same time, a second current detection chip 14 is connected to a corresponding laser sensor 21 through a scan line 8 to receive the first feedback current in the direction of the scan line.
  • Two feedback current I H Two feedback current I H.
  • the first current detection chip determines whether the first feedback current I v is greater than a preset first reference current I v0
  • the second current detection chip determines whether the second feedback current I H is greater than a preset second reference current If the current I H0 is satisfied at the same time, it can be considered that the laser sensors from the first reference current I v0 and the second reference current I H0 are irradiated by an external laser.
  • the corresponding first current detection chip obtains the first position coordinate m according to the first feedback current I v
  • the corresponding second current detection chip obtains the second position coordinate n according to the second feedback current I H.
  • the driving device for executing the driving method further includes a display control module 4, the first position coordinate m and the second position coordinate n are sent to the display control module 4, and the display control module 4 is based on the first position
  • the coordinates m and the second position coordinates n determine the irradiation position coordinates (m, n) of the external laser; and according to the irradiation position coordinates (m, n), a control instruction is sent to adjacent pixel units to adjust the irradiation The display color of the pixel unit at the position coordinate (m, n).
  • the display control module 4 controls the pixel unit at the irradiation position coordinates (m, n) to be displayed in red.
  • the illumination position and its neighboring pixel units can be displayed in green or other colors, or other brightness, so that human eyes can find the illumination position more easily.
  • the driving device further includes a plurality of first switches 11, and each first switch 11 is respectively arranged between the corresponding first current detection module 13 and the laser sensor 21, and is configured to be turned on within the predetermined period of time.
  • the first current detection module 13 and the laser sensor 21 are respectively arranged between the corresponding first current detection module 13 and the laser sensor 21, and is configured to be turned on within the predetermined period of time.
  • the driving device further includes a plurality of second switches 12, and each second switch 12 is respectively arranged between the corresponding second current detection module 14 and the laser sensor 21, and is configured to be turned on within the predetermined period of time.
  • the second current detection module 14 and the laser sensor 21 are respectively arranged between the corresponding second current detection module 14 and the laser sensor 21, and is configured to be turned on within the predetermined period of time.
  • the preset period is a vertical blanking period between normal display periods of the display panel. Specifically, when the vertical blanking period is reached, the display control module controls the plurality of first switches 11 and the plurality of second switches 12 to be closed at the same time according to a preset timing command, and the first feedback current I v and the second feedback current I H are fed back to the first current detection chip 13 and the second current detection chip 14 respectively.
  • the following uses a display device including 360 scan lines and 960 data lines as an example to describe the distribution and connection relationship of the laser sensor 21, the first current detection chip, and the second current detection chip in the embodiment of the present invention.
  • the 360 scan lines are commonly connected to the same first voltage generating chip; the 960 data lines are commonly connected to the same second voltage generating chip.
  • the 360 scan lines are connected to the same second current detection chip in a group of 10 scan lines, that is, a total of 32 second current detection chips are provided on the gate driver 7.
  • the data lines are connected to the same first current detection chip in a group of 30 data lines, and a total of 32 first current detection chips are provided on the source driver 5.
  • the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
  • the driving method and the driving device for the display panel of the present invention are provided with a plurality of laser sensors and a plurality of control switches, which can generate current changes when the laser is irradiated on the laser sensor, and the current detection on the source driver and the gate driver
  • the module determines the laser irradiation position on the display panel according to the current change and changes the display color of the pixel unit in the laser irradiation area, so that the user can observe the laser projection position and improve the demonstration effect.

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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

Provided are a drive method and drive device used for a display panel (9), capable of determining, according to a feedback current generated by the laser sensor (21), a position of laser irradiation on the display panel (9) and changing the display color of a pixel unit (10) in a laser irradiation region, so as to facilitate observation of the laser projection position by a user; the drive method comprises: loading a preset voltage signal into a preset region of the display panel (9) within a predetermined time period (V blank) (S1); detecting a feedback current in the preset region (S2); determining, according to the feedback current, information of the position of laser irradiation on the display panel (9) (S3); adjusting, according to the position information, the display state of the external laser irradiation region on the display panel (9) (S4).

Description

一种用于显示面板的驱动方法和驱动装置Driving method and driving device for display panel 技术领域Technical field
本发明属于显示面板技术领域，具体涉及一种用于显示面板的驱动方法和驱动装置。The invention belongs to the technical field of display panels, and in particular relates to a driving method and a driving device for a display panel.
背景技术Background technique
激光是原子受激辐射所产生的光，激光比起普通光源，激光的单色性好，亮度高，方向性好。激光指示器，又称激光笔，是把可见激光设计成便携式、手易握、且由激光模组(发光二极管)加工成的笔型发射器，目前已广泛应用于电子教学、演示文稿和报告演讲等。Laser is the light produced by the stimulated radiation of atoms. Compared with ordinary light sources, laser has better monochromaticity, high brightness and good directivity. Laser pointer, also known as laser pointer, is a pen-shaped transmitter designed to be portable, easy to hold, and processed by laser modules (light emitting diodes). It has been widely used in e-learning, presentations and reports. Speech etc.
在一些应用场景下，LED(发光二极管)、OLED(有机发光二极管)等液晶显示面板需要与激光笔配合使用以达到更佳的演示效果。当激光笔投射到显示面板的显示面上时，一部分入射光被吸收，另一方面由于显示面板本身亮度较高，会导致观看者和使用者看不清楚激光笔投射到显示面板上的亮点，甚至看不到亮点，严重影响了演示效果。In some application scenarios, liquid crystal display panels such as LEDs (light emitting diodes) and OLEDs (organic light emitting diodes) need to be used in conjunction with laser pointers to achieve better presentation effects. When the laser pointer is projected onto the display surface of the display panel, part of the incident light is absorbed. On the other hand, the high brightness of the display panel itself will cause viewers and users to see clearly the bright spots projected on the display panel by the laser pointer. Even the bright spots are not visible, which seriously affects the presentation effect.
发明内容Summary of the invention
为了解决现有技术中存在的上述问题，本发明提供了一种用于显示面板的驱动方法和驱动装置。本发明要解决的技术问题通过以下技术方案实现：In order to solve the above-mentioned problems in the prior art, the present invention provides a driving method and a driving device for a display panel. The technical problem to be solved by the present invention is realized through the following technical solutions:
本发明的一个方面提供了一种用于显示面板的驱动方法，包括：An aspect of the present invention provides a driving method for a display panel, including:
在预定时段内向显示面板的预设区域加载预设电压信号；Loading a preset voltage signal to the preset area of the display panel within a predetermined time period;
侦测所述预设区域的反馈电流；Detecting the feedback current of the predetermined area;
根据所述反馈电流确定所述显示面板上外部激光照射的位置信息；Determining the position information irradiated by the external laser on the display panel according to the feedback current;
根据所述位置信息调整显示面板上外部激光照射区域的显示状态。The display state of the external laser irradiation area on the display panel is adjusted according to the position information.
在本发明的一个实施例中，在预定时段内向显示面板的预设区域加载预设电压信号，包括：In an embodiment of the present invention, applying a preset voltage signal to the preset area of the display panel within a predetermined time period includes:
在所述预设时段内沿第一方向向位于所述显示面板的激光传感器发送第一电压Vv，同时在所述预设时段内沿第二方向向位于所述显示面板的激光传感器发送第二电压VH。The first voltage Vv is sent to the laser sensor located on the display panel in the first direction during the preset time period, and the second voltage Vv is sent to the laser sensor located on the display panel in the second direction during the preset time period. Voltage VH.
在本发明的一个实施例中，侦测所述预设区域的反馈电流，包括：In an embodiment of the present invention, detecting the feedback current of the predetermined area includes:
侦测所述激光传感器根据所述第一电压Vv产生的第一反馈电流Iv，以及根据所述第二电压VH产生的第二反馈电流IH。The first feedback current Iv generated by the laser sensor according to the first voltage Vv and the second feedback current IH generated according to the second voltage VH are detected.
在本发明的一个实施例中，根据所述反馈电流确定所述显示面板上外部激光照射的位置信息，包括：In an embodiment of the present invention, determining the position information of the external laser irradiation on the display panel according to the feedback current includes:
当所述第一反馈电流Iv大于预设的第一参考电流Iv0且所述第二反馈电流IH大于预设的第一参考电流IH0时，根据所述第一反馈电流Iv确定所述第一方向上的第一位置坐标m，并根据所述第二反馈电流IH确定所述第二方向上的第二位置坐标n。When the first feedback current Iv is greater than the preset first reference current Iv0 and the second feedback current IH is greater than the preset first reference current IH0, the first method is determined according to the first feedback current Iv The first position coordinate m upward, and the second position coordinate n in the second direction is determined according to the second feedback current IH.
在本发明的一个实施例中，根据所述位置信息调整显示面板上外部激光照射区域的显示状态，包括：In an embodiment of the present invention, adjusting the display state of the external laser irradiation area on the display panel according to the position information includes:
根据所述第一位置坐标m和所述第二位置坐标n确定所述外部激光的照射位置坐标(m,n)；Determine the irradiation position coordinates (m, n) of the external laser according to the first position coordinate m and the second position coordinate n;
根据所述照射位置坐标(m,n)调整所述照射位置坐标(m,n)处的相应像素单元的显示状态。The display state of the corresponding pixel unit at the irradiation position coordinate (m, n) is adjusted according to the irradiation position coordinate (m, n).
本发明的另一方面提供了一种用于显示面板的驱动装置，包括：Another aspect of the present invention provides a driving device for a display panel, including:
电压产生模块，用于在预定时段内向显示面板的预设区域加载预设电压信号；A voltage generating module for loading a preset voltage signal to a preset area of the display panel within a predetermined period;
反馈电流产生模块，用于根据所述预设区域中的所述预设电压信号产生反馈电流；A feedback current generating module, configured to generate a feedback current according to the preset voltage signal in the preset area;
电流检测模块，用于侦测所述预设区域的所述反馈电流并确定所述显示面板上外部激光照射的位置信息；A current detection module, configured to detect the feedback current in the preset area and determine the position information of the external laser irradiation on the display panel;
显示控制模块，用于根据所述位置信息调整显示面板上外部激光照射区域的显示状态。The display control module is used to adjust the display state of the external laser irradiation area on the display panel according to the position information.
在本发明的一个实施例中，所述电压产生模块包括第一电压产生芯片和第二电压产生芯片，其中，In an embodiment of the present invention, the voltage generating module includes a first voltage generating chip and a second voltage generating chip, wherein,
所述第一电压产生芯片设置在源极驱动器上，用于通过数据线发送第一固定电压Vv至所述反馈电流产生模块；The first voltage generating chip is arranged on the source driver, and is used to send a first fixed voltage Vv to the feedback current generating module through a data line;
所述第二电压产生芯片设置在栅极驱动器上，用于通过扫描线发送第二固定电压VH至所述反馈电流产生模块。The second voltage generating chip is arranged on the gate driver and is used to send a second fixed voltage VH to the feedback current generating module through a scan line.
在本发明的一个实施例中，所述反馈电流产生模块包括多个激光传感器，所述多个激光传感器均匀设置在所述显示面板上且分别电连接至所述电流检测模块，用于根据所述第一固定电压Vv产生第一反馈电流Iv，并根据所述第二固定电压VH产生第二反馈电流IH。In an embodiment of the present invention, the feedback current generation module includes a plurality of laser sensors, and the plurality of laser sensors are uniformly arranged on the display panel and are electrically connected to the current detection module respectively, and are configured to perform according to The first fixed voltage Vv generates a first feedback current Iv, and the second fixed voltage VH generates a second feedback current IH.
在本发明的一个实施例中，所述电流检测模块包括多个第一电流检测芯片和多个第二电流检测芯片，其中，In an embodiment of the present invention, the current detection module includes a plurality of first current detection chips and a plurality of second current detection chips, wherein,
所述多个第一电流检测芯片并列设置在所述源极驱动器上，每个所述第一电流检测芯片通过数据线连接至相应的激光传感器；The plurality of first current detection chips are arranged in parallel on the source driver, and each of the first current detection chips is connected to a corresponding laser sensor through a data line;
所述多个第二电流检测芯片并列设置在所述栅极驱动器上，每个所述第二电流检测芯片通过扫描线连接至相应的激光传感器。The plurality of second current detection chips are arranged in parallel on the gate driver, and each of the second current detection chips is connected to a corresponding laser sensor through a scan line.
在本发明的一个实施例中，所述驱动装置还包括多个第一开关和多个第二开关，其中，In an embodiment of the present invention, the driving device further includes a plurality of first switches and a plurality of second switches, wherein:
每个所述第一开关分别设置在相应的所述第一电流检测模块与所述激光传感器之间，用于在所述预定时段内接通所述第一电流检测模块与所述激光传感器；Each of the first switches is respectively arranged between the corresponding first current detection module and the laser sensor, and is configured to switch on the first current detection module and the laser sensor within the predetermined time period;
每个所述第二开关分别设置在相应的所述第二电流检测模块与所述激光传感器之间，用于在所述预定时段内接通所述第二电流检测模块与所述激光传感器。Each of the second switches is respectively arranged between the corresponding second current detection module and the laser sensor, and is configured to switch on the second current detection module and the laser sensor within the predetermined time period.
与现有技术相比，本发明的有益效果在于：Compared with the prior art, the present invention has the following beneficial effects:
1、本发明的驱动装置通过设置多个激光传感器和多个控制开关，当激光照射到激光传感器上时能够产生电流变化，位于源极驱动器和栅极驱动器上的电流检测模块根据所述电流变化确定显示面板上的激光照射位置并改变激光照射区域像素单元的显示颜色，从而便于使用者观察激光投射位置，提升演示效果。1. By setting multiple laser sensors and multiple control switches, the driving device of the present invention can produce current changes when the laser is irradiated on the laser sensors. The current detection modules located on the source driver and the gate driver change according to the current Determine the laser irradiation position on the display panel and change the display color of the pixel unit in the laser irradiation area, so as to facilitate the user to observe the laser projection position and improve the demonstration effect.
2、本发明的显示驱动方法在显示面板正常显示的帧与帧之间即扫描信号和控制信号为低电平时进行激光位置测试，能够很好地确定激光投射位置，提升演示效果，且同时保证了正常的显示效果。2. The display driving method of the present invention performs a laser position test between the frames normally displayed on the display panel, that is, when the scanning signal and the control signal are at a low level, which can well determine the laser projection position, improve the demonstration effect, and ensure that A normal display effect.
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented in accordance with the content of the specification, and in order to make the above and other objectives, features and advantages of the present invention more obvious and understandable. In the following, the preferred embodiments are cited in conjunction with the drawings, and the detailed description is as follows.
附图说明Description of the drawings
图1是本发明实施例提供的一种用于显示面板的驱动方法的流程图。FIG. 1 is a flowchart of a driving method for a display panel provided by an embodiment of the present invention.
图2是一种显示装置的结构示意图；Fig. 2 is a schematic structural diagram of a display device;
图3是图2的显示装置的一种时序图；FIG. 3 is a timing diagram of the display device of FIG. 2;
图4是本发明实施例提供的一种用于显示面板的驱动方法的时序图；4 is a timing diagram of a driving method for a display panel provided by an embodiment of the present invention;
图5是本发明实施例提供的一种显示驱动装置的模块图；5 is a block diagram of a display driving device provided by an embodiment of the present invention;
图6是本发明实施例提供的一种显示驱动装置的结构示意图；6 is a schematic structural diagram of a display driving device provided by an embodiment of the present invention;
[根据细则91更正 09.04.2020]　
[Corrected according to Rule 91 09.04.2020]
[根据细则91更正 09.04.2020]　
[Corrected according to Rule 91 09.04.2020]
附图标记如下：The reference signs are as follows:
1-电压产生模块；2-反馈电流产生模块；21-激光传感器；3-电流检测模块；4-显示控制模块；5-源极驱动器；6-数据线；7-栅极驱动器；8-扫描线；9-显示面板；10-像素单元；11-第一开关；12-第二开关；13-第一电流检测芯片；14-第二电流检测芯片。1-voltage generation module; 2-feedback current generation module; 21-laser sensor; 3-current detection module; 4-display control module; 5-source driver; 6-data line; 7-gate driver; 8-scan Line; 9-display panel; 10-pixel unit; 11-first switch; 12-second switch; 13-first current detection chip; 14-second current detection chip.
具体实施方式detailed description
下面结合具体实施例对本发明内容做进一步的描述，但本发明的实施方式不限于此。The content of the present invention will be further described below in conjunction with specific examples, but the implementation of the present invention is not limited thereto.
实施例一Example one
本实施例提供了一种用于显示面板的驱动方法。首先请参见图1，图1是一种显示装置的结构示意图，所述显示装置包含源极驱动器(Source Driver，SD)、栅极驱动器(Gate Driver，GD)、多条数据线、多条扫描线，以及显示面板，其中，显示面板上均匀设置有多个像素单元，每个像素单元分别连接至相应的扫描线和数据线，所述扫描线用于将栅极驱动器产生 的扫描驱动信号传输至所述像素单元，所述数据线用于将源极驱动器产生的数据驱动信号传输至所述像素单元。This embodiment provides a driving method for a display panel. First, please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a display device. The display device includes a source driver (SD), a gate driver (GD), multiple data lines, and multiple scans. Line, and a display panel, wherein a plurality of pixel units are uniformly arranged on the display panel, and each pixel unit is respectively connected to a corresponding scan line and data line, and the scan line is used to transmit the scan driving signal generated by the gate driver To the pixel unit, the data line is used to transmit the data driving signal generated by the source driver to the pixel unit.
请参见图2，图2是图1的显示装置的一种时序图。在正常显示过程中的每一帧时间段内，图2中的第k帧，以第n-1、n和n+1行扫描线为例，首先第n-1条扫描线输出一扫描信号G n-1至第n-1行的像素单元，使得第n-1行的像素单元的TFT开关件栅极导通，此时源极驱动器产生的数据驱动信号经数据线传输到TFT的源极，此时由于TFT栅极导通，源极的数据驱动信号S n-1输入至所述像素单元中，完成一次驱动；接着第n条扫描线输出一个扫描信号G n至第n行的像素单元，使得第n行的像素单元的TFT开关件栅极导通，此时源极驱动器产生的数据驱动信号S n经数据线传输到TFT的源极，此时由于TFT栅极导通，源极的数据驱动信号输入至所述像素单元中，完成一次驱动；随后第n+1条扫描线输出一个扫描信号G n+1至第n+1行的像素单元，使得第n+1行的像素单元的TFT开关件栅极导通，此时源极驱动器产生的数据驱动信号S n+1经数据线传输到TFT的源极，此时由于TFT栅极导通，源极的数据驱动信号输入至所述像素单元中，完成一次驱动。当第k帧中的每一行扫描线均完成驱动之后，则所述第K帧画面即完成显示。值得注意的是，在进入第k+1帧的显示之前，在正常显示时段之间存在场消隐时段(V blank)，此时，扫描驱动信号和数据驱动信号均为低电平，显示面板不执行显示。在场消隐时段结束之后，进入第k+1帧图像的显示，其驱动过程与第k帧相同，这里不再赘述。 Please refer to FIG. 2. FIG. 2 is a timing diagram of the display device in FIG. In each frame period in the normal display process, the kth frame in Figure 2 takes the n-1, n, and n+1 scan lines as an example. First, the n-1 scan line outputs a scan signal G n-1 to the n-1th row of the pixel unit makes the TFT switch gate of the n-1th row of pixel unit turn on. At this time, the data driving signal generated by the source driver is transmitted to the source of the TFT via the data line At this time, because the TFT gate is turned on, the source data driving signal S n-1 is input to the pixel unit to complete a driving; then the nth scan line outputs a scan signal G n to the nth row pixel unit, so that the switching element TFT gate-pixel unit of the n-th row, the source driver generates a data driving signal transmitted through the data line S n to the source of the TFT, this time due to the TFT gate, The data driving signal of the source is input to the pixel unit to complete one drive; then the n+1th scan line outputs a scan signal G n+1 to the pixel unit in the n+1th row, so that the n+1th row The gate of the TFT switch element of the pixel unit is turned on. At this time, the data driving signal S n+1 generated by the source driver is transmitted to the source of the TFT via the data line. At this time, because the TFT gate is turned on, the data of the source is driven The signal is input into the pixel unit to complete a drive. After the scanning lines of each row in the kth frame are completely driven, the kth frame picture is finished to be displayed. It is worth noting that before entering the display of the k+1 frame, there is a vertical blanking period (V blank) between the normal display periods. At this time, the scan driving signal and the data driving signal are both low, and the display panel No display is performed. After the vertical blanking period ends, the display of the image of the k+1 frame is entered, and the driving process is the same as that of the k frame, which will not be repeated here.
进一步地，请参见图3，图3是本发明实施例提供的一种用于显示面板的驱动方法的流程图。所述驱动方法包括：Further, please refer to FIG. 3, which is a flowchart of a driving method for a display panel according to an embodiment of the present invention. The driving method includes:
S1：在预定时段内加载预设电压信号至显示面板的预设区域中；S1: Load a preset voltage signal to the preset area of the display panel within a predetermined time period;
S2：侦测所述预设区域的反馈电流；S2: Detect the feedback current of the preset area;
S3：根据所述反馈电流确定所述显示面板上激光照射的位置信息；S3: Determine the position information of the laser irradiation on the display panel according to the feedback current;
S4：根据所述位置信息调整显示面板上所述外部激光照射区域的显示状态。S4: Adjust the display state of the external laser irradiation area on the display panel according to the position information.
所述S1包括：The S1 includes:
在所述预设时段内沿第一方向向位于显示面板的激光传感器发送第一电压V v，并在所述预设时段内沿第二方向向位于显示面板的激光传感器发送第二电压V H。 Send a first voltage V v to the laser sensor located on the display panel in the first direction within the preset time period, and send a second voltage V H to the laser sensor located on the display panel in the second direction within the preset time period .
在本实施例中，所述预设时段为显示面板正常显示时段之间的场消隐时段。具体地，本实施例的源极驱动器上设置有第一电压产生电路，用于产生第一电压V v，扫描驱动器上设置有第二电压产生电路，用于产生第二电压V H。所述第一电压V v通过数据线传输至所述显示面板，所述第二电压V H通过扫描线传输至所述显示面板。 In this embodiment, the preset period is a vertical blanking period between normal display periods of the display panel. Specifically, the source driver of this embodiment is provided with a first voltage generating circuit for generating the first voltage V v , and the scan driver is provided with a second voltage generating circuit for generating the second voltage V H. The first voltage V v is transmitted to the display panel through a data line, and the second voltage V H is transmitted to the display panel through a scan line.
进一步地，所述S2包括：侦测所述激光传感器根据所述第一电压V v产生第一反馈电流I v，以及根据所述第二电压V H产生的第二反馈电流I H。 Further, the S2 comprising: generating a first laser sensor to detect the feedback current I v according to the first voltage V v, and a second feedback current I H generated from the second voltage V H.
具体地，在所述显示面板上均匀设置有多个激光传感器，所述激光传感器同时连接至相应的数据线和扫描线，可以同时接收通过数据线传输的第一电压V v和通过扫描线传输的第二电压V H。所述激光传感器可以是TFT元件或者是电容元件，其在自然光和激光的照射下导电性会发生变化，当输入一个固定电压时，反馈的电流值会有差异，从而可以根据反馈电流的变化识别显示面板上激光照射的位置。在本实施例中，所述激光传感器优选地为TFT元件，位于所述扫描线与所述数据线垂直相交所构成的区域中，其栅极和漏极连接至所述扫描线，源极连接至所述数据线。进一步地，可 以根据激光笔照射区的光斑直径来进行确定显示面板中激光传感器的分布密度，从而在保证显示精确度的前提下减少激光传感器的个数，以降低成本。 In particular, the display is provided with a plurality of uniformly laser sensor panel, while the laser sensor is connected to the respective data lines and scan lines, the data lines can be received through a first transmission voltage V v and the scanning lines are simultaneously transmitted through The second voltage V H. The laser sensor can be a TFT element or a capacitive element, and its conductivity will change under the irradiation of natural light and laser. When a fixed voltage is input, the feedback current value will be different, so that it can be identified according to the change in the feedback current The position of the laser on the display panel. In this embodiment, the laser sensor is preferably a TFT element, which is located in the area formed by the scan line and the data line perpendicularly intersecting, and its gate and drain are connected to the scan line, and the source is connected To the data line. Further, the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
当第一电压V v传输至某一激光传感器时，产生第一反馈电流I v，所述第一反馈电流I v通过所述数据线返回至源极驱动器；当第二电压V H传输至某一激光传感器时，产生第一反馈电流I v，所述第二反馈电流I v通过所述扫描线返回至栅极驱动器。 When the first voltage V v is transmitted to a certain laser sensor, a first feedback current I v is generated, and the first feedback current I v returns to the source driver through the data line; when the second voltage V H is transmitted to a certain laser sensor When a laser sensor is used, a first feedback current I v is generated, and the second feedback current I v returns to the gate driver through the scan line.
在所述源极驱动器中设置有多个第一电流检测芯片、所述栅极驱动器上设置有多个第二电流检测芯片，在本实施例中，所述第一电流检测芯片、所述第二电流检测芯片和所述激光传感器的数量均相等，一个第一电流检测芯片通过一条数据线连接至一个相应的激光传感器，以接收数据线方向上的第一反馈电流I v；同时，一个第二电流检测芯片通过一条扫描线连接至一个相应的激光传感器，以接收与数据线方向垂直的扫描线方向上的第二反馈电流I H。 The source driver is provided with a plurality of first current detection chips, and the gate driver is provided with a plurality of second current detection chips. In this embodiment, the first current detection chip, the first current detection chip The numbers of the two current detection chips and the laser sensors are equal. A first current detection chip is connected to a corresponding laser sensor through a data line to receive the first feedback current I v in the direction of the data line; at the same time, a first current detection chip The two current detection chips are connected to a corresponding laser sensor through a scan line to receive the second feedback current I H in the scan line direction perpendicular to the data line direction.
进一步地，所述S3包括：Further, the S3 includes:
S31：当所述第一反馈电流I v大于预设的第一参考电流I v0且所述第二反馈电流I H大于预设的第一参考电流I H0时，根据所述第一反馈电流I v确定所述第一方向上的第一位置坐标m，并根据所述第二反馈电流I H确定所述第二方向上的第二位置坐标n。 S31: When the first feedback current I v is greater than the preset first reference current I v0 and the second feedback current I H is greater than the preset first reference current I H0 , according to the first feedback current I v Determine the first position coordinate m in the first direction, and determine the second position coordinate n in the second direction according to the second feedback current IH .
具体地，判断所述第一反馈电流I v是否大于预设的第一参考电流I v0并判断所述第二反馈电流I H是否大于预设的第二参考电流I H0，若未同时满足，则继续发送固定电压至显示面板，若同时满足，则根据所述第一反馈电流I v确定所述第一方向上的第一位置坐标m；根据所述第二反馈电流I H确定 所述第二方向上的第二位置坐标n。 Specifically, it is determined whether the first feedback current I v is greater than the preset first reference current I v0 and whether the second feedback current I H is greater than the preset second reference current I H0 , if not simultaneously satisfied, Then continue to send a fixed voltage to the display panel, if it is satisfied at the same time, determine the first position coordinate m in the first direction according to the first feedback current Iv; determine the first position coordinate m in the first direction according to the second feedback current IH The second position coordinate n in the two directions.
具体地，首先，设置第一参考电流I v0和第二参考电流I H0，第一参考电流I v0和第二参考电流I H0通常根据自然光照射下所述激光传感器产生的反馈电流进行设定，以判断所述激光传感器是否受到激光的照射。 Specifically, first, the first reference current I v0 and the second reference current I H0 are set . The first reference current I v0 and the second reference current I H0 are usually set according to the feedback current generated by the laser sensor under natural light irradiation. To determine whether the laser sensor is irradiated by laser light.
接着，第一电流检测芯片判断所述第一反馈电流I v是否大于预设的第一参考电流I v0，第二电流检测芯片判断所述第二反馈电流I H是否大于预设的第二参考电流I H0，若同时满足，则可以认为所述第一参考电流I v0和所述第二参考电流I H0来源的激光传感器受到了外部激光的照射。相应的第一电流检测芯片根据所述第一反馈电流I v得到第一位置坐标m，相应的第二电流检测芯片根据第二反馈电流I H得到第二位置坐标n。 Next, the first current detection chip determines whether the first feedback current I v is greater than the preset first reference current I v0 , and the second current detection chip determines whether the second feedback current I H is greater than the preset second reference current If the current I H0 is satisfied at the same time, it can be considered that the laser sensors from the first reference current I v0 and the second reference current I H0 are irradiated by an external laser. The corresponding first current detection chip obtains the first position coordinate m according to the first feedback current I v , and the corresponding second current detection chip obtains the second position coordinate n according to the second feedback current I H.
请参见图4，图4是本发明实施例提供的一种用于显示面板的驱动方法的时序图。在正常显示过程中的每一帧时间段内，其时序控制过程与图2的时序图的控制过程相同，这里不再赘述，在此以第n-1、n和n+1行扫描线为例，主要描述本实施例的驱动方法在第k帧与第k+1帧之间的场消隐时段(V blank)的驱动过程。具体地，如图4所示，在第k帧与第k+1帧之间的场消隐时段(V blank)，每个第一电压产生电路通过数据线发送第一电压信号(G n-1、G n、G n+1)，每个第二电压产生电路通过扫描线发送第二电压信号(S m-1、S m、S m+1)，激光传感器在第一电压信号(G n-1、G n、G n+1)和第二电压信号(S m-1、S m、S m+1)的作用下分别产生第一反馈电流(IG n-1、IG n、IG n+1)和第一反馈电流(IS m-1、IS m、IS m+1)。如图4所示，经过对比，第m路数据线所对应的的反馈电流IS m和第n路扫描线所对应的的反馈电流IG n均大于相应的参考电流，则可以确定第m路数据线和第n路扫描线相交的位置即为外部激光照射的位置。 Please refer to FIG. 4, which is a timing diagram of a driving method for a display panel provided by an embodiment of the present invention. In each frame period in the normal display process, the timing control process is the same as the control process of the timing chart in FIG. 2, and will not be repeated here. Here, the scan lines of the n-1, n, and n+1th rows are For example, the driving process of the driving method of this embodiment in the vertical blanking period (V blank) between the kth frame and the k+1th frame is mainly described. Specifically, as shown in FIG. 4, during the vertical blanking period (V blank) between the k-th frame and the k+1-th frame, each first voltage generating circuit sends a first voltage signal (G n- 1 , G n , G n+1 ), each second voltage generating circuit sends a second voltage signal (S m-1 , S m , S m+1 ) through the scan line, and the laser sensor performs the first voltage signal (G n-1 , G n , G n+1 ) and the second voltage signal (S m-1 , S m , S m+1 ) respectively generate the first feedback current (IG n-1 , IG n , IG n+1 ) and the first feedback current (IS m-1 , IS m , IS m+1 ). As shown in Figure 4, after comparison, the feedback current IS m corresponding to the m- th data line and the feedback current IG n corresponding to the n-th scan line are both greater than the corresponding reference current, then the m- th data can be determined The position where the line intersects with the nth scan line is the position irradiated by the external laser.
接着，所述S4包括：根据所述照射位置坐标(m,n)向相应的像素单元发送控制指令，调整所述照射位置坐标(m,n)处的所述像素单元的显示状态。Then, the S4 includes: sending a control instruction to the corresponding pixel unit according to the irradiation position coordinates (m, n) to adjust the display state of the pixel unit at the irradiation position coordinates (m, n).
在本实施例中，执行该驱动方法的驱动装置还包括一显示控制模块，在步骤S3得到第一位置坐标m和第二位置坐标n发送至所述显示控制模块，所述显示控制模块根据所述第一位置坐标m和所述第二位置坐标n确定所述外部激光的照射位置坐标(m,n)。并且根据所述照射位置坐标(m,n)向邻近的像素单元发送控制指令，调整所述照射位置坐标(m,n)处的所述像素单元的显示状态。In this embodiment, the driving device for executing the driving method further includes a display control module. In step S3, the first position coordinate m and the second position coordinate n are obtained and sent to the display control module. The display control module The first position coordinate m and the second position coordinate n determine the irradiation position coordinates (m, n) of the external laser. And according to the irradiation position coordinates (m, n), a control instruction is sent to adjacent pixel units to adjust the display state of the pixel units at the irradiation position coordinates (m, n).
在本实施例中，可以以每个激光传感器为中心，将显示面板上的各个像素单元分割成多个区域；例如，将所述激光传感器与其周向相邻的多个像素单元分割为一个区域，当检测到该激光传感器收到外部激光照射时，则所述显示控制模块控制该区域内的像素单元改变显示状态。可以根据激光笔照射区的光斑直径来进行确定显示面板中激光传感器的分布密度，即所述区域的大小，从而在保证显示精确度的前提下减少激光传感器的个数，以降低成本。In this embodiment, each pixel unit on the display panel can be divided into multiple areas with each laser sensor as the center; for example, the laser sensor and its circumferentially adjacent multiple pixel units are divided into one area, when When detecting that the laser sensor receives external laser irradiation, the display control module controls the pixel units in the area to change the display state. The distribution density of the laser sensors in the display panel, that is, the size of the area, can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
在本实施例中，所述显示控制模块控制所述照射位置坐标(m,n)处的像素单元显示为红色。可以将所述照射位置及其邻近像素单元显示绿色或其它颜色，使得人眼更容易发现照射位置。In this embodiment, the display control module controls the pixel unit at the irradiation position coordinates (m, n) to be displayed in red. The irradiation position and its neighboring pixel units can be displayed in green or other colors, so that the human eyes can find the irradiation position more easily.
在其他的实施例中，所述显示控制模块可以通过调整所述照射位置坐标(m,n)处的像素单元的显示亮度来显示激光照射位置，例如使所述激光照射位置处的显示单元变得更亮或者更暗，以与邻近的子像素在显示上出现差别，从而使得使用者可以容观察到激光的位置，完成激光定位的动作。In other embodiments, the display control module may display the laser irradiation position by adjusting the display brightness of the pixel unit at the irradiation position coordinates (m, n), for example, changing the display unit at the laser irradiation position It should be brighter or darker to display a difference from the adjacent sub-pixels, so that the user can observe the position of the laser and complete the laser positioning action.
本发明的显示驱动方法在显示面板正常显示的帧与帧之间即扫描信号 和控制信号为低电平时进行激光位置测试，能够很好地确定激光投射位置，提升演示效果，且同时保证了正常的显示效果。The display driving method of the present invention performs a laser position test between the frames normally displayed on the display panel, that is, when the scanning signal and the control signal are at a low level, can determine the laser projection position well, improve the demonstration effect, and at the same time ensure normality The display effect.
实施例二Example two
在上述实施例的基础上，本实施例提供了一种用于显示面板的驱动装置。请参见图5，图5是本发明实施例提供的一种显示驱动装置的模块图。该驱动装置包括：电压产生模块1，用于在预定时段内加载预设电压信号至显示面板的预设区域中；反馈电流产生模块2，用于根据所述预设区域中的所述预设电压信号产生反馈电流；电流检测模块3，用于侦测所述反馈电流并确定所述显示面板上激光照射的位置信息；显示控制模块4，用于根据所述位置信息调整显示面板上所述外部激光照射区域的显示状态。On the basis of the foregoing embodiment, this embodiment provides a driving device for a display panel. Please refer to FIG. 5, which is a block diagram of a display driving device according to an embodiment of the present invention. The driving device includes: a voltage generating module 1 for loading a preset voltage signal into a preset area of the display panel within a predetermined period of time; a feedback current generating module 2 for loading a preset voltage signal in the preset area according to the preset area The voltage signal generates the feedback current; the current detection module 3 is used to detect the feedback current and determine the position information of the laser irradiation on the display panel; the display control module 4 is used to adjust the position information on the display panel according to the position information. The display status of the external laser irradiation area.
进一步地，电压产生模块1包括第一电压产生芯片和第二电压产生芯片，其中，所述第一电压产生芯片(附图中未示出)设置在源极驱动器5上，用于通过数据线6发送第一固定电压V v至反馈电流产生模块2；所述第二电压产生芯片(附图中未示出)设置在栅极驱动器7上，用于通过扫描线8发送第二固定电压V H至反馈电流产生模块2。 Further, the voltage generating module 1 includes a first voltage generating chip and a second voltage generating chip, wherein the first voltage generating chip (not shown in the drawings) is arranged on the source driver 5 for passing the data line 6 Send the first fixed voltage V v to the feedback current generating module 2; the second voltage generating chip (not shown in the figure) is arranged on the gate driver 7 for sending the second fixed voltage V through the scan line 8. H to feedback current generation module 2.
进一步地，反馈电流产生模块2包括多个激光传感器21，多个激光传感器21均匀设置在显示面板9上且分别电连接至电流检测模块3和相邻的像素单元110，用于根据第一固定电压V v产生第一反馈电流I v，并根据第二固定电压V H产生第二反馈电流I H。所述激光传感器21可以是TFT元件或者是电容元件，其在自然光和激光的照射下导电性会发生变化，当输入一个固定电压时，反馈的电流值会有差异，从而可以根据反馈电流的变化识别显示面板上激光照射的位置。在本实施例中，所述激光传感器21优选地为TFT元件，位于数据线6与扫描线8垂直相交所构成的区域中。进一 步地，可以根据激光笔照射区的光斑直径来进行确定显示面板中激光传感器的分布密度，从而在保证显示精确度的前提下减少激光传感器的个数，以降低成本。例如在图6中，每4个像素单元10对应设置有一个激光传感器21。 Further, the feedback current generation module 2 includes a plurality of laser sensors 21, and the plurality of laser sensors 21 are uniformly arranged on the display panel 9 and electrically connected to the current detection module 3 and the adjacent pixel unit 110, for fixing The voltage V v generates the first feedback current I v , and the second fixed voltage V H generates the second feedback current I H. The laser sensor 21 can be a TFT element or a capacitive element, and its conductivity will change under the irradiation of natural light and laser. When a fixed voltage is input, the feedback current value will be different, which can be based on the change of the feedback current. Identify the position of the laser on the display panel. In this embodiment, the laser sensor 21 is preferably a TFT element, which is located in the area formed by the data line 6 and the scan line 8 perpendicularly intersecting. Further, the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs. For example, in FIG. 6, there is a laser sensor 21 corresponding to every four pixel units 10.
当第一电压V v传输至激光传感器21时，产生第一反馈电流I v，所述第一反馈电流I v通过数据线6返回至源极驱动器5；当第二电压V H传输至所述激光传感器21时，产生第一反馈电流I v，所述第二反馈电流I v通过所述扫描线8返回至栅极驱动器7。 When the first voltage V v is transmitted to the laser sensor 21, a first feedback current I v is generated, and the first feedback current I v returns to the source driver 5 through the data line 6; when the second voltage V H is transmitted to the When the laser sensor 21 is used, a first feedback current I v is generated, and the second feedback current I v returns to the gate driver 7 through the scan line 8.
进一步地，电流检测模块3包括多个第一电流检测芯片13和多个第二电流检测芯片14，其中，所述多个第一电流检测芯片13并列设置在源极驱动器5上，每个第一电流检测芯片13通过一数据线6连接至相应的激光传感器21；所述多个第二电流检测芯片14并列设置在栅极驱动器7上，每个第二电流检测芯片14通过一扫描线8连接至相应的激光传感器21。Further, the current detection module 3 includes a plurality of first current detection chips 13 and a plurality of second current detection chips 14, wherein the plurality of first current detection chips 13 are arranged in parallel on the source driver 5, each A current detection chip 13 is connected to the corresponding laser sensor 21 through a data line 6; the plurality of second current detection chips 14 are arranged in parallel on the gate driver 7, and each second current detection chip 14 passes through a scan line 8. Connect to the corresponding laser sensor 21.
具体地，在所述多个第一电流检测芯片13中分别设置第一参考电流I v0，在多个第二电流检测芯片14中分别设置第二参考电流I H0，其中，第一参考电流I v0和第二参考电流I H0通常根据自然光照射下所述激光传感器产生的反馈电流进行设定，以判断所述激光传感器是否受到激光的照射。 Specifically, a first reference current I v0 is set in the plurality of first current detection chips 13 respectively, and a second reference current I H0 is set in the plurality of second current detection chips 14 respectively, wherein the first reference current I v0 and the second reference current I H0 are usually set according to the feedback current generated by the laser sensor under natural light irradiation to determine whether the laser sensor is irradiated by laser light.
在本实施例中，所述第一电流检测芯片13、所述第二电流检测芯片14和所述激光传感器21的数量均相等，一个第一电流检测芯片13通过一条数据线6连接至一个相应的激光传感器21，以接收数据线方向上的第一反馈电流I v；同时，一个第二电流检测芯片14通过一条扫描线8连接至一个相应的激光传感器21，以接收扫描线方向上的第二反馈电流I H。接着，第一电流检测芯片判断所述第一反馈电流I v是否大于预设的第一参考电流I v0， 第二电流检测芯片判断所述第二反馈电流I H是否大于预设的第二参考电流I H0，若同时满足，则可以认为所述第一参考电流I v0和所述第二参考电流I H0来源的激光传感器受到了外部激光的照射。相应的第一电流检测芯片根据所述第一反馈电流I v得到第一位置坐标m，相应的第二电流检测芯片根据第二反馈电流I H得到第二位置坐标n。 In this embodiment, the numbers of the first current detection chip 13, the second current detection chip 14 and the laser sensor 21 are all equal, and a first current detection chip 13 is connected to a corresponding one through a data line 6 The laser sensor 21 to receive the first feedback current I v in the direction of the data line; at the same time, a second current detection chip 14 is connected to a corresponding laser sensor 21 through a scan line 8 to receive the first feedback current in the direction of the scan line. Two feedback current I H. Next, the first current detection chip determines whether the first feedback current I v is greater than a preset first reference current I v0 , and the second current detection chip determines whether the second feedback current I H is greater than a preset second reference current If the current I H0 is satisfied at the same time, it can be considered that the laser sensors from the first reference current I v0 and the second reference current I H0 are irradiated by an external laser. The corresponding first current detection chip obtains the first position coordinate m according to the first feedback current I v , and the corresponding second current detection chip obtains the second position coordinate n according to the second feedback current I H.
进一步地，执行该驱动方法的驱动装置还包括一显示控制模块4，第一位置坐标m和第二位置坐标n发送至所述显示控制模块4，所述显示控制模块4根据所述第一位置坐标m和所述第二位置坐标n确定所述外部激光的照射位置坐标(m,n)；并且根据所述照射位置坐标(m,n)向邻近的像素单元发送控制指令，调整所述照射位置坐标(m,n)处的所述像素单元的显示颜色。Further, the driving device for executing the driving method further includes a display control module 4, the first position coordinate m and the second position coordinate n are sent to the display control module 4, and the display control module 4 is based on the first position The coordinates m and the second position coordinates n determine the irradiation position coordinates (m, n) of the external laser; and according to the irradiation position coordinates (m, n), a control instruction is sent to adjacent pixel units to adjust the irradiation The display color of the pixel unit at the position coordinate (m, n).
在本实施例中，显示控制模块4控制所述照射位置坐标(m,n)处的像素单元显示为红色。可以将所述照射位置及其邻近像素单元显示绿色或其它颜色，或者其他亮度，使得人眼更容易发现照射位置。In this embodiment, the display control module 4 controls the pixel unit at the irradiation position coordinates (m, n) to be displayed in red. The illumination position and its neighboring pixel units can be displayed in green or other colors, or other brightness, so that human eyes can find the illumination position more easily.
进一步地，所述驱动装置还包括多个第一开关11，每个第一开关11分别设置在相应的第一电流检测模块13与激光传感器21之间，用于在所述预定时段内接通所述第一电流检测模块13与所述激光传感器21。Further, the driving device further includes a plurality of first switches 11, and each first switch 11 is respectively arranged between the corresponding first current detection module 13 and the laser sensor 21, and is configured to be turned on within the predetermined period of time. The first current detection module 13 and the laser sensor 21.
进一步地，所述驱动装置还包括多个第二开关12，每个第二开关12分别设置在相应的第二电流检测模块14与激光传感器21之间，用于在所述预定时段内接通所述第二电流检测模块14与激光传感器21。Further, the driving device further includes a plurality of second switches 12, and each second switch 12 is respectively arranged between the corresponding second current detection module 14 and the laser sensor 21, and is configured to be turned on within the predetermined period of time. The second current detection module 14 and the laser sensor 21.
在本实施例中，所述预设时段为显示面板正常显示时段之间的场消隐时段。具体地，当到达所述场消隐时段，所述显示控制模块根据预先设定的时序命令控制所述多个第一开关11和所述多个第二开关12同时闭合，第一反馈电流I v和第二反馈电流I H分别反馈至第一电流检测芯片13和第二 电流检测芯片14。 In this embodiment, the preset period is a vertical blanking period between normal display periods of the display panel. Specifically, when the vertical blanking period is reached, the display control module controls the plurality of first switches 11 and the plurality of second switches 12 to be closed at the same time according to a preset timing command, and the first feedback current I v and the second feedback current I H are fed back to the first current detection chip 13 and the second current detection chip 14 respectively.
以下以包含360条扫描线和960条数据线的显示装置为例说明本发明实施例的激光传感器21、第一电流检测芯片和第二电流检测芯片的分布及连接关系。具体地，所述360条扫描线共同连接至同一个第一电压产生芯片；所述960条数据线共同连接至同一个第二电压产生芯片。进一步地，所述360条扫描线以10个扫描线为一组连接至同一个第二电流检测芯片，也就是说，栅极驱动器7上共设置有32个第二电流检测芯片，所述960条数据线以30条数据线为一组连接至同一个第一电流检测芯片，源极驱动器5上共设置有32个第一电流检测芯片。由于通常情况下每条数据线和每条扫描线的相交处均包括一个像素单元，因此，本实施例中每30*10＝300个像素单元范围内包括一个激光传感器。进一步地，可以根据激光笔照射区的光斑直径来进行确定显示面板中激光传感器的分布密度，从而在保证显示精确度的前提下减少激光传感器的个数，以降低成本。The following uses a display device including 360 scan lines and 960 data lines as an example to describe the distribution and connection relationship of the laser sensor 21, the first current detection chip, and the second current detection chip in the embodiment of the present invention. Specifically, the 360 scan lines are commonly connected to the same first voltage generating chip; the 960 data lines are commonly connected to the same second voltage generating chip. Further, the 360 scan lines are connected to the same second current detection chip in a group of 10 scan lines, that is, a total of 32 second current detection chips are provided on the gate driver 7. The data lines are connected to the same first current detection chip in a group of 30 data lines, and a total of 32 first current detection chips are provided on the source driver 5. Since the intersection of each data line and each scan line generally includes one pixel unit, in this embodiment, each 30*10=300 pixel unit includes a laser sensor. Further, the distribution density of the laser sensors in the display panel can be determined according to the spot diameter of the laser pointer irradiated area, so as to reduce the number of laser sensors on the premise of ensuring display accuracy to reduce costs.
本发明的用于显示面板的驱动方法和驱动装置通过设置多个激光传感器和多个控制开关，当激光照射到激光传感器上时能够产生电流变化，位于源极驱动器和栅极驱动器上的电流检测模块根据所述电流变化确定显示面板上的激光照射位置并改变激光照射区域像素单元的显示颜色，从而便于使用者观察激光投射位置，提升演示效果。The driving method and the driving device for the display panel of the present invention are provided with a plurality of laser sensors and a plurality of control switches, which can generate current changes when the laser is irradiated on the laser sensor, and the current detection on the source driver and the gate driver The module determines the laser irradiation position on the display panel according to the current change and changes the display color of the pixel unit in the laser irradiation area, so that the user can observe the laser projection position and improve the demonstration effect.
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims (15)

  1. 一种用于显示面板的驱动方法，其特征在于，包括：A driving method for a display panel, characterized in that it comprises:
    在预定时段内向显示面板的预设区域加载预设电压信号；Loading a preset voltage signal to the preset area of the display panel within a predetermined time period;
    侦测所述预设区域的反馈电流；Detecting the feedback current of the predetermined area;
    根据所述反馈电流确定所述显示面板上外部激光照射的位置信息；Determining the position information irradiated by the external laser on the display panel according to the feedback current;
    根据所述位置信息调整显示面板上外部激光照射区域的显示状态。The display state of the external laser irradiation area on the display panel is adjusted according to the position information.
  2. 根据权利要求1所述的驱动方法，其特征在于，在预定时段内向显示面板的预设区域加载预设电压信号，包括：The driving method according to claim 1, wherein the loading a preset voltage signal to a preset area of the display panel within a predetermined time period comprises:
    在所述预设时段内沿第一方向向位于所述显示面板的激光传感器发送第一电压V v，同时在所述预设时段内沿第二方向向位于所述显示面板的激光传感器发送第二电压V H。 Along a first direction within the preset period of the display panel positioned to the laser sensor sends a first voltage V v, while the display panel is positioned to the first laser sensor sends a second direction within the predetermined time period Two voltage V H.
  3. 根据权利要求2所述的驱动方法，其特征在于，所述激光传感器为TFT元件或电容元件。The driving method according to claim 2, wherein the laser sensor is a TFT element or a capacitive element.
  4. 根据权利要求2所述的驱动方法，其特征在于，所述激光传感器同时连接至相应的数据线和扫描线，且位于所述扫描线与所述数据线垂直相交所构成的区域中，所述激光传感器栅极和漏极连接至所述扫描线，源极连接至所述数据线。The driving method according to claim 2, wherein the laser sensor is connected to the corresponding data line and the scan line at the same time, and is located in the area formed by the scan line and the data line perpendicularly intersecting, the The gate and drain of the laser sensor are connected to the scan line, and the source is connected to the data line.
  5. 根据权利要求2所述的驱动方法，其特征在于，侦测所述预设区域的反馈电流，包括：The driving method of claim 2, wherein detecting the feedback current of the predetermined area comprises:
    侦测所述激光传感器根据所述第一电压V v产生的第一反馈电流I v，以及根据所述第二电压V H产生的第二反馈电流I H。 Detecting a first feedback current I v of the laser produced by the sensor according to the first voltage V v, and a second feedback current I H generated from the second voltage V H.
  6. 根据权利要求5所述的驱动方法，其特征在于，根据所述反馈电流确定所述显示面板上外部激光照射的位置信息，包括：The driving method of claim 5, wherein determining the position information of the external laser irradiation on the display panel according to the feedback current comprises:
    当所述第一反馈电流I v大于预设的第一参考电流I v0且所述第二反馈电 流I H大于预设的第一参考电流I H0时，根据所述第一反馈电流I v确定所述第一方向上的第一位置坐标m，并根据所述第二反馈电流I H确定所述第二方向上的第二位置坐标n。 When the first feedback current I v is greater than the preset first reference current I v0 and the second feedback current I H is greater than the preset first reference current I H0 , determine according to the first feedback current I v The first position coordinate m in the first direction and the second position coordinate n in the second direction are determined according to the second feedback current IH .
  7. 根据权利要求6所述的驱动方法，其特征在于，当判断所述第一反馈电流I v小于预设的第一参考电流I v0或判断所述第二反馈电流I H小于预设的第二参考电流I H0时，则继续发送预设电压信号至显示面板。 The driving method according to claim 6, wherein when it is determined that the first feedback current I v is less than the preset first reference current I v0 or it is determined that the second feedback current I H is less than the preset second When the reference current I H0 is used, the preset voltage signal is continuously sent to the display panel.
  8. 根据权利要求6所述的驱动方法，其特征在于，根据所述位置信息调整显示面板上外部激光照射区域的显示状态，包括：The driving method according to claim 6, wherein the adjusting the display state of the external laser irradiation area on the display panel according to the position information comprises:
    根据所述第一位置坐标m和所述第二位置坐标n确定所述外部激光的照射位置坐标(m,n)；Determine the irradiation position coordinates (m, n) of the external laser according to the first position coordinate m and the second position coordinate n;
    根据所述照射位置坐标(m,n)调整所述照射位置坐标(m,n)处的相应像素单元的显示状态。The display state of the corresponding pixel unit at the irradiation position coordinate (m, n) is adjusted according to the irradiation position coordinate (m, n).
  9. 一种用于显示面板的驱动装置，其特征在于，包括：A driving device for a display panel, characterized in that it comprises:
    电压产生模块(1)，用于在预定时段内向显示面板的预设区域加载预设电压信号；The voltage generating module (1) is used to load a preset voltage signal to the preset area of the display panel within a predetermined time period;
    反馈电流产生模块(2)，用于根据所述预设区域中的所述预设电压信号产生反馈电流；A feedback current generating module (2), configured to generate a feedback current according to the preset voltage signal in the preset area;
    电流检测模块(3)，用于侦测所述预设区域的所述反馈电流并确定所述显示面板上外部激光照射的位置信息；The current detection module (3) is used to detect the feedback current in the preset area and determine the position information of the external laser irradiation on the display panel;
    显示控制模块(4)，用于根据所述位置信息调整显示面板上外部激光照射区域的显示状态。The display control module (4) is used to adjust the display state of the external laser irradiation area on the display panel according to the position information.
  10. 根据权利要求9所述的驱动装置，其特征在于，所述电压产生模块(1)包括第一电压产生芯片和第二电压产生芯片，其中，The driving device according to claim 9, characterized in that the voltage generating module (1) comprises a first voltage generating chip and a second voltage generating chip, wherein,
    所述第一电压产生芯片设置在源极驱动器(5)上，用于通过数据线发送第一固定电压V v至所述反馈电流产生模块(2)； The first voltage generation chip provided to the source driver (5) for transmitting a first fixed voltage V v by data lines to the current generating feedback module (2);
    所述第二电压产生芯片设置在栅极驱动器(7)上，用于通过扫描线(8)发送第二固定电压V H至所述反馈电流产生模块(2)。 The second voltage generating chip is arranged on the gate driver (7), and is used to send a second fixed voltage V H to the feedback current generating module (2) through the scan line (8).
  11. 根据权利要求10所述的驱动装置，其特征在于，所述反馈电流产生模块(2)包括多个激光传感器(21)，所述多个激光传感器(21)均匀设置在所述显示面板上且分别电连接至所述电流检测模块(3)，用于根据所述第一固定电压V v产生第一反馈电流I v，并根据所述第二固定电压V H产生第二反馈电流I H。 The driving device according to claim 10, wherein the feedback current generating module (2) comprises a plurality of laser sensors (21), and the plurality of laser sensors (21) are uniformly arranged on the display panel and are electrically connected to the current detection module (3), for generating a first feedback current I v according to the first fixed voltage V v, and generated according to the second fixed voltage V H of the second feedback current I H.
  12. 根据权利要求11所述的驱动装置，其特征在于，所述激光传感器为TFT元件或电容元件。The driving device according to claim 11, wherein the laser sensor is a TFT element or a capacitive element.
  13. 根据权利要求11所述的驱动装置，其特征在于，所述激光传感器同时连接至相应的数据线和扫描线，且位于所述扫描线与所述数据线垂直相交所构成的区域中，所述激光传感器栅极和漏极连接至所述扫描线，源极连接至所述数据线。The driving device according to claim 11, wherein the laser sensor is connected to the corresponding data line and the scan line at the same time, and is located in the area formed by the scan line and the data line perpendicularly intersecting, and the The gate and drain of the laser sensor are connected to the scan line, and the source is connected to the data line.
  14. 根据权利要求11所述的驱动装置，其特征在于，所述电流检测模块(3)包括多个第一电流检测芯片(13)和多个第二电流检测芯片(14)，其中，The driving device according to claim 11, wherein the current detection module (3) comprises a plurality of first current detection chips (13) and a plurality of second current detection chips (14), wherein,
    所述多个第一电流检测芯片(13)并列设置在所述源极驱动器(5)上，每个所述第一电流检测芯片(13)通过数据线(6)连接至相应的激光传感器(21)；The plurality of first current detection chips (13) are arranged in parallel on the source driver (5), and each of the first current detection chips (13) is connected to a corresponding laser sensor ( twenty one);
    所述多个第二电流检测芯片(14)并列设置在所述栅极驱动器(7)上，每个所述第二电流检测芯片(14)通过扫描线(6)连接至相应的激光传感器(21)。The plurality of second current detection chips (14) are arranged in parallel on the gate driver (7), and each of the second current detection chips (14) is connected to a corresponding laser sensor ( twenty one).
  15. 根据权利要求14所述的驱动装置，其特征在于，还包括多个第一开关(11)和多个第二开关(12)，其中，The driving device according to claim 14, further comprising a plurality of first switches (11) and a plurality of second switches (12), wherein,
    每个所述第一开关(11)分别设置在相应的所述第一电流检测模块(13)与所述激光传感器(21)之间，用于在所述预定时段内接通所述第一电流检测模块(13)与所述激光传感器(21)；Each of the first switches (11) is respectively arranged between the corresponding first current detection module (13) and the laser sensor (21), and is used to turn on the first switch (11) within the predetermined period of time. Current detection module (13) and the laser sensor (21);
    每个所述第二开关(12)分别设置在相应的所述第二电流检测模块(14)与所述激光传感器(21)之间，用于在所述预定时段内接通所述第二电流检测模块(14)与所述激光传感器(21)。Each of the second switches (12) is respectively arranged between the corresponding second current detection module (14) and the laser sensor (21), and is used to turn on the second switch (12) within the predetermined period of time. A current detection module (14) and the laser sensor (21).
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