CN113781971A - Display panel driving method and display panel - Google Patents

Display panel driving method and display panel Download PDF

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Publication number
CN113781971A
CN113781971A CN202110898263.9A CN202110898263A CN113781971A CN 113781971 A CN113781971 A CN 113781971A CN 202110898263 A CN202110898263 A CN 202110898263A CN 113781971 A CN113781971 A CN 113781971A
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China
Prior art keywords
driving
display
signal
line
control unit
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Pending
Application number
CN202110898263.9A
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Chinese (zh)
Inventor
杨清
应如波
姜雷雷
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Hefei Visionox Technology Co Ltd
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Hefei Visionox Technology Co Ltd
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Priority to CN202110898263.9A priority Critical patent/CN113781971A/en
Publication of CN113781971A publication Critical patent/CN113781971A/en
Pending legal-status Critical Current

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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
    • G09G3/34—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
    • 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only

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

Abstract

The application discloses display panel's drive method and display panel, display panel includes two at least display areas, and display panel includes at least one control unit and a plurality of line scanning drive unit, and a plurality of line scanning drive unit divide into two at least drive groups, and every drive group corresponds a display area, and this drive method includes: the control unit acquires a display instruction; the control unit generates a control signal according to the display instruction, the control signal comprises at least two driving signals, and the at least two driving signals can be mutually independent and respectively control different driving groups; the control unit respectively sends at least two driving signals to the line scanning driving units of the driving groups controlled by the control unit so as to drive the line scanning driving units to drive the display area to display. Through the mode, the display of a plurality of display areas can be controlled independently by one control unit.

Description

Display panel driving method and display panel
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a driving method of a display panel and a display panel.
Background
Generally, only one light-emitting surface is arranged in a display device, and the pictures of the light-emitting surface are integrally controlled, which cannot meet the requirement of simultaneously watching different pictures in a specific application scene.
Disclosure of Invention
The technical problem mainly solved by the present application is to provide a driving method of a display panel and a display panel, which can realize that one control unit is used for controlling the display of a plurality of display areas independently.
In order to solve the technical problem, the application adopts a technical scheme that: a driving method of a display panel is provided, the display panel includes at least two display areas, and the display panel includes at least one control unit and a plurality of line scanning driving units, the plurality of line scanning driving units are divided into at least two driving groups, each driving group corresponds to one display area, the driving method includes: the control unit acquires a display instruction; the control unit generates a control signal according to the display instruction, the control signal comprises at least two driving signals, the at least two driving signals can be mutually independent and respectively control different driving groups, and the control unit respectively sends the at least two driving signals to the line scanning driving unit of the driving group controlled by the control unit so as to enable the line scanning driving unit to drive the display area to display.
In order to solve the above technical problem, another technical solution adopted by the present application is: the display panel comprises a driving layer and a light emitting layer, wherein the driving layer comprises a driving circuit, and the driving circuit comprises at least one control unit and a plurality of line scanning driving units; the light emitting layer includes a plurality of light emitting devices; the display panel comprises at least two display areas, a plurality of line scanning driving units are divided into at least two driving groups, each driving group corresponds to one display area, the plurality of line scanning driving units are used for driving the light-emitting devices in the display areas to emit light,
the control unit is used for generating at least two driving signals, and the at least two driving signals can be mutually independent and respectively control different driving groups.
The beneficial effect of this application is: be different from prior art's condition, the display panel that this application provided includes two display areas at least, and set up at least one the control unit and a plurality of line scanning unit on this display panel, this application is divided into groups a plurality of line scanning units, utilize each drive group of the mutually independent control of control unit, carry out independent control with every display area that corresponds to the drive group, realize the multizone of display screen and show, and only adopt at least two display areas of a control unit control, can realize the independence of showing between every display area, and need not to set up a plurality of control units, can reduce control cost.
Drawings
Fig. 1 is a schematic structural diagram of an array substrate and a line scan driving unit in an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a display panel with double-sided display in an embodiment of the present application;
FIG. 3 is a schematic flowchart illustrating an embodiment of a driving method of a display panel according to an embodiment of the present disclosure;
fig. 4(a) is a schematic view of a display screen in the full-screen display mode in the embodiment of the present application;
fig. 4(b) is a timing chart of control signals in the full-screen display mode according to the embodiment of the present application;
fig. 5(a) is a schematic view of a display screen in the split-screen display mode according to the embodiment of the present application;
fig. 5(b) is a control signal timing chart in the screen division display mode in the embodiment of the present application;
fig. 6(a) is a schematic display screen in another split-screen display mode according to the embodiment of the present application;
FIG. 6(b) is a timing diagram of control signals in another split-screen display mode according to the embodiment of the present application;
fig. 7(a) is a schematic display screen in another full-screen display mode according to the embodiment of the present application;
FIG. 7(b) is a timing diagram of control signals in another full-screen display mode according to an embodiment of the present application;
fig. 8(a) is a schematic view of a display screen in the transparent display mode in the embodiment of the present application;
fig. 8(b) is a timing chart of control signals in the transparent display mode in the embodiment of the present application;
fig. 9 is a schematic flowchart of a driving method of a display panel in a practical application scenario of the present application;
fig. 10 is a flowchart illustrating a driving method of a display panel according to another practical application scenario of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The display panel comprises an array substrate and a light-emitting device, wherein the array substrate can be used for providing a driving circuit for the light-emitting device so as to drive the light-emitting device to emit light. Specifically, the array substrate may include a substrate and a driving layer, the driving layer including a plurality of pixel driving units, a plurality of scan lines, and a plurality of data lines; each pixel driving unit includes at least one thin film transistor group, at least one thin film transistor group in each pixel driving unit is electrically connected to at least one corresponding SCAN line, each pixel driving unit is electrically connected to at least one corresponding DATA line, as shown in fig. 1, the SCAN lines are generally arranged in a first direction of the array substrate, denoted by SCAN1 to SCAN3, the DATA lines are generally arranged in a second direction of the array substrate, denoted by DATA1 to DATA3, each pixel driving unit is disposed in a region where the SCAN lines and the DATA lines cross, the first direction is perpendicular to the second direction, and for convenience of description, the first direction is also referred to as a row direction and the second direction is referred to as a column direction.
The application provides a display panel, the display panel includes drive layer and luminescent layer, the luminescent layer includes a plurality of luminescent device, the drive layer includes drive circuit, drive circuit includes at least one control unit and a plurality of line scanning drive unit, line scanning drive unit can be connected with a line scanning line, through to scanning line input drive signal come control with the line scanning line connected a pixel drive unit's of a line drive circuit switch on/close, and then drive the luminescent device of a line and give out light.
The display panel provided by the application comprises at least two display areas, the display panel can be divided into two adjacent display areas along a second direction, the areas of the two display areas can be the same or different, and the display effects of the two display areas can be the same or different, for example, the two display areas have the same resolution and have the light-emitting devices with the same structure. Of course, the display area may be divided into more display areas, which is not limited herein.
Correspondingly, the plurality of line scanning driving units are divided into at least two driving groups along the second direction, and the boundary lines of the driving groups are overlapped with the boundary lines of the display area, namely, when the display area is divided, the parts (such as a light-emitting device, a pixel driving circuit and the like) for realizing the display are divided into areas; specifically, the plurality of light emitting devices are divided into two groups located in the two display regions, respectively, and the line scanning driving units driving the light emitting devices are also correspondingly divided into the two groups.
The display panel provided by the application has the advantages that the control unit can generate at least two driving signals, and the at least two driving signals can be mutually independent and respectively control different driving groups.
As shown in fig. 2, in a specific embodiment, the control unit may be a display driver chip (DDIC), the display panel includes two display regions, a first display region a and a second display region B, and the plurality of line scan driving units may be divided into a first driving group and a second driving group according to the display regions. The display Panel provided by the application can use a Gate In Panel (GIP) technology, which is a technology of integrating a scanning chip on an OLED Panel, and can achieve the purposes of saving the scanning chip, reducing the material cost, reducing the process quantity and shortening the process time, thereby reducing the cost of the liquid crystal Panel and realizing a narrower frame. For convenience of description, the row scan driving unit is hereinafter denoted as GIP. The resolution of each display region of the display panel provided by the present application may be 1080RGB 1920, that is, each display region may include 1920 rows of pixels, and each display region correspondingly includes 1920 line scan driving units, each line scan driving unit may be labeled as GIP _1 to GIP _1920, and for convenience of distinction, the line scan driving units of the two driving groups are respectively labeled as GIP _1 to GIP _1920 and GIP _1921 to GIP _ 3840; the row scan driving units GIP _1 to GIP _1920 are the first driving group GIP _ a, and the row scan driving units GIP _1921 to GIP _3840 are the second driving group GIP _ B.
The row scan driving units GIP _1 to GIP _1920 of the first driving group GIP _ a may be used to drive the light emitting devices in the first display region a to emit light, and the plurality of row scan driving units GIP _1921 to GIP _3840 of the second driving group GIP _ B are used to drive the light emitting devices in the second display region B to emit light. The driving signals may be supplied to the two driving groups, respectively, to achieve independent control of the two display regions using one DDIC.
It can be understood that the two driving groups GIP _ a and GIP _ B can be respectively disposed at two sides of the display panel in the row direction, and in order to simplify the manufacturing steps of the dual-panel display and reduce the manufacturing cost, display devices with different light emitting directions can be adopted in the first display area a and the second display area B, for example, the first display area a uses bottom light emitting devices, and the second display area B uses top light emitting devices. The display panel can be a flexible display panel, the display panel can be bent, the relative positions of the first display area A and the second display area B are changed, and on the basis of realizing the folding function of the first display area A and the second display area B, the effect of frameless display can be achieved; in other embodiments, the display panel may further define 4 or 5 or more display regions, the number of the specific display regions may be set according to actual requirements, and correspondingly, a corresponding number of driving groups are set to respectively drive each display region.
In this embodiment, a control unit DDIC is disposed on a display panel having two display regions, and provides mutually independent driving signals to the line scan driving units in the corresponding first driving group and the second driving group, so that the plurality of line scan driving units in each driving group drive the light emitting devices in the corresponding display region to emit light, thereby realizing the display of the display screen in different regions.
Still taking the display panel divided into the first display area a and the second display area B shown in fig. 2 as an example for description, a driving method for the control unit to respectively control the display of the first display area a and the second display area B through the corresponding driving groups GIP _ a and GIP _ B in the display panel will be described.
Referring to fig. 3, fig. 3 is a schematic flowchart illustrating an embodiment of a driving method of a display panel according to the present application, the method including:
step 11: the control unit acquires a display instruction.
The display instruction is used for indicating the display effect, mode and the like of the display screen.
Step 12: the control unit generates a control signal according to the display instruction, the control signal comprises at least two driving signals, and the at least two driving signals can be mutually independent and respectively control different driving groups.
After the control unit receives the display command, it can identify the required display mode contained therein, and then generate the corresponding control signal according to the display mode, the control signal may include at least two driving signals to independently control the different driving groups, for example, the control signal may include a first driving signal and a second driving signal, the first driving signal controls the first driving group GIP _ a, and the second driving signal controls the second driving group GIP _ B. Wherein the first driving signal and the second driving signal are driving signals for distinguishing to different driving groups, which may also be referred to as a first group driving signal and a second group driving signal, and each group driving signal may include a plurality of or a plurality of signals.
Step 13: the control unit respectively sends at least two driving signals to the line scanning driving units of the driving groups controlled by the control unit so as to drive the line scanning driving units to drive the display area to display.
The control unit may respectively send a first driving signal and a second driving signal to the row scan driving units under the first driving group GIP _ a and the second driving group GIP _ B according to the display mode to independently control the first display area a and the second display area B, and the first driving group GIP _ a and the second driving group GIP _ B drive the first display area a and the second display area B to display the picture after receiving the first driving signal/the second driving signal.
Specifically, the driving method of the display panel is further described in a case where the display mode is divided into a full-screen display mode and a split-screen display mode, where the full-screen display mode is a mode in which the first display area a and the second display area B collectively display a complete picture as a whole, and the split-screen display mode is a mode in which the first display area a and the second display area B individually display respective pictures as separate individuals, and the respective pictures displayed by the first display area a and the second display area B may be the same or different.
In an embodiment, the control signal is further used for controlling the time nodes of the row scanning driving unit to which the first driving signal and the second driving signal are connected.
The GIP driving signal includes at least two Scan signal lines (Scan signal Scan and emission control signal EM), and each Scan signal line is connected to a clock signal line (CLK) to control a timing of the Scan signal.
In the present application, the GIP _ a and the GIP _ B have the same GIP cells, the scan signal line of each GIP cell is connected to the clock signal line (CLK), and different GIP cells may share the clock signal line (CLK).
The GIP units need a Scan enable signal and a clock signal when operating, the Scan enable signal is used to enable scanning of the Scan signal lines, and separate Scan enable signals are used to control input of the Scan signal Scan and the emission control signal EM, respectively, and specifically include SIN _ IN _ a/B and EIN _ IN _ a/B, wherein the Scan enable signal SIN _ IN _ a/B is used to control the Scan signal Scan input to the first driving group GIP _ a/the second driving group GIP _ B, and the Scan enable signal EIN _ IN _ a/B is used to control the emission control signal EM input to the first driving group GIP _ a/the second driving group GIP _ B, respectively.
The clock signal is used to control the timing of the Scan signal, each GIP cell may be controlled by the same clock signal generated by the clock signal line, which is respectively denoted by SCK1/2, ECK1/2, the timing of the Scan signal Scan is controlled by the clock signal SCK1/2, and the timing of the emission control signal EM is controlled by the ECK 1/2.
The control unit can give out different clock signals according to different display modes to determine the input time of the driving signals input to the corresponding driving group, and further control the starting time of the line scanning driving units in the driving group.
Furthermore, the current display modes of the first display area a and the second display area B are controlled by the scan start time, and when the first display area a and the second display area B simultaneously receive the first driving signal and the second driving signal respectively, the first display area a and the second display area B are used as separate display screens to display respective pictures respectively at the moment, namely, the split-screen display mode; when the first display area a and the second display area B sequentially receive the first driving signal and the second driving signal, the first display area a and the second display area B may display the same picture as a whole, such as the full-screen display mode described below.
As shown in fig. 4(a), in the full-screen display mode, the first display area a and the second display area B collectively display a complete picture as a whole, and in the embodiment, the pixel driving unit circuit is a 7T1C pixel circuit as an example, so that the timing diagram of the control signal output by the control unit at this time can be as shown in fig. 4(B), in the full-screen display mode, the control unit outputs the first clock signal to control the input of the first driving signal and the second driving signal, as shown in fig. 4(B), the first clock signal (SCK1/2, ECK1/2) is used to control the second driving signal to access the row driving scanning units of the second driving group GIP _ B at the first time, which is the time when the scanning of all the row scanning units in the first driving group GIP _ a is finished.
It can be understood that, in this embodiment, taking a Thin Film Transistor (TFT) in the pixel driving unit circuit as an example of a P-type TFT, when the clock signal output by the clock signal line is at a low level, the driving signal is active to drive the display area to be turned on, and when the clock signal output by the clock signal line is at a high level, the driving signal is inactive to drive the display area to be turned on, that is, if the first driving signal input to the first driving group GIP _ a for controlling the first display area a to be turned on is enabled, the clock signal at the low level may be input, and if the first driving signal input to the first driving group GIP _ a for controlling the display area a to be turned on is disabled, the clock signal at the high level may be input; it is understood that in other embodiments, the clock signal may be set to be active at a high level and inactive at a low level, and then the clock signal at the low level may be input or not input directly when the first driving signal is desired to be inactive, and then the corresponding type of TFT may be set accordingly to achieve the corresponding control effect; similarly, the first driving signal and the second driving signal can also select a high-level conduction mode or a low-level conduction mode according to actual conditions, and in this embodiment, the conduction mode when the first driving signal and the second driving signal are at a low level is taken as an example for description.
Referring to fig. 4(a) and fig. 4(B) together, the white area in fig. 4(B) is the control signal received by the first driving group GIP _ a in the first display area a, and the gray area is the control signal received by the second driving group GIP _ B in the second display area B, where the control signals received by the first driving group GIP _ a and the second driving group GIP _ B are continuous.
Specifically, in the full-screen display mode, the control unit first sends a low-level first driving signal to the GIP _1 (i.e., the row scan driving unit in the first row of the first driving group), starts scanning of the scanning lines in the first display area a, so that the first driving group GIP _ a scans from the GIP _1 to the GIP _1920 step by step (i.e., the row scan driving unit in the last row of the first driving group); then after the scanning in the first display area a is finished, the control unit sends the second driving signal to the GIP _1921 in the second driving group GIP _ B (i.e. the row scanning driving unit in the first row of the second driving group), starts the scanning of the scanning lines in the second display area B, so that the second driving group scans from the GIP _1921 to the GIP _3840 (i.e. the row scanning driving unit in the last row of the second driving group) step by step, wherein the GIP _1921 in the first display area a is adjacent to the GIP _1921 in the second display area B, at this time, it can be considered that the control unit sequentially outputs the first driving signal and the second driving signal, sequentially and continuously starts the scanning of the scanning lines in the first display area a and the second display area B, the scanning lines scan from the GIP _1 to the GIP _3840 step by step, in this scanning manner, the data signals output by the control unit are sequentially accessed row by row, the first display area A and the second display area B can display the same picture together, and the two display areas can be seen as a large display area.
In order to ensure the image continuity, the control unit may pre-charge the row scan driving units GIP _1921 of the first row of the second driving group GIP _ B, and output the low-level second driving signal to the second driving group GIP _ B before the first time (i.e., when the scan task of the first display region a is completed), but because the clock signal is at the high level, the low-level second driving signal is not activated, the driving circuit of the second display region B is not turned on, and until the first time comes, the clock signal becomes the low level, the driving circuit of the second display region B is turned on.
Further, the image displayed by the display area is related to the scanning mode of the scanning lines and the data signals, which are used to determine the content of the image to be displayed by the display area, such as the flower-type pattern shown in fig. 4(a), when the first display area a and the second display area B both receive the same data signals, which are denoted by S1 to S3240; in the full-screen display mode, the scanning mode is to scan from GIP _1 to GIP _1920 step by step, that is, the first display area a outputs a partial picture first, then scans from GIP _1921 to GIP _3840 step by step, and the second display area B displays the remaining picture next to the content displayed in the first display area a, which is equivalent to scanning from GIP _1 to GIP _3840 step by step, so that the first display area a and the second display area B can continuously output all the picture contents included in the data signals according to the contents in the data signals S1 to S3240, and finally obtain a complete picture as shown in fig. 4 (a).
If the scanning mode is changed to first scan from GIP _3840 to GIP _1921 step by step and then scan from GIP _1920 to GIP _1 step by step in the full-screen display mode, the frames displayed in the first display area a and the second display area B are mirror images of the frame shown in fig. 4 (a); similarly, in other display modes, the images displayed in the first display area a and the second display area B can be mirror-changed according to different scanning modes.
In a specific embodiment, in the split-screen display mode shown in fig. 5(a), the first display area a and the second display area B respectively display the complete picture, and taking the pixel unit circuit as an example of a 7T1C pixel compensation circuit, the timing diagram of the control signal outputted by the control unit at this time is shown in fig. 5(B), in this mode, the control signal outputs the second clock signal for controlling the input of the first driving signal and the second driving signal, the second clock signal is used for controlling the second driving signal to be connected to the row driving scanning units of the second driving group GIP _ B at the second time, the second time is the time when the first driving signal is connected to the row driving scanning units of the first driving group GIP _ a, that is, the second clock signal controls the second driving signal to be inputted to the row driving scanning units of the second driving group GIP _ B at the same time when the first driving signal is controlled to be inputted to the row driving scanning units of the first driving group GIP _ a, that is, the first display area a and the second display area B receive the first driving signal and the second driving signal at the same time, so as to display respective pictures at the same time, and the two display areas can be regarded as two independent display areas.
Specifically, the control unit transmits the first driving signal to the GIP _1 and simultaneously transmits the second driving signal to the GIP _1921, so that the first driving group GIP _ a is scanned from the GIP _1 to the GIP _1920 step by step, the second driving group GIP _ B is scanned from the GIP _1921 to the GIP _3840 step by step, and the scanning of the two display areas is started simultaneously, so that the first display area a and the second display area B are displayed simultaneously according to the contents in the data signals S1 to S3240, and the same picture content as that shown in fig. 5(a) is displayed.
It is to be understood that, in other embodiments, the control unit may further transmit the first driving signal to the GIP _1920 so that the first driving group GIP _ a is scanned from the GIP _1920 to the GIP _1 in a stepwise manner; meanwhile, a second driving signal is sent to the GIP _1921, so that the second driving group scans from the GIP _1921 to the GIP _3840 step by step, and the first display area A and the second display area B can respectively display the same image in a mirror image manner; it should be understood that the first driving signal may be input to the GIP _1, the GIP _1920, the second driving signal may be input to the GIP _1921, the GIP _3840, the images displayed in the first display area a and the second display area B may be different according to the row scan driving unit selected and input, and the matching of the different images displayed in the first display area a and the second display area B is not illustrated herein.
In other embodiments, when only one of the first display area a and the second display area B is controlled to display, the control unit may send the first driving signal only to the first driving group GIP _ a and not send the second driving signal to the second driving group GIP _ B to realize that only the first display area a is driven to display, or send the second driving signal only to the second driving group GIP _ B and not send the first driving signal to the first driving group GIP _ a to realize that only the second display area B is driven to display; or in any case, the first and second driving signals may be respectively transmitted to the first and second driving groups GIP _ a and GIP _ B, and then whether the driving signals are valid is controlled by the high/low level of the output first driving signal, and the specific control mode selection may be set according to actual situations.
Further, in the above-mentioned embodiments, the data signals inputted to the first driving group GIP _ a and the second driving group GIP _ B are the same, in other embodiments, the data signals inputted to the first driving group GIP _ a and the second driving group GIP _ B may be different, and the control signal outputted by the control unit includes the first driving signal and the first data signal for controlling the first driving group GIP _ a, and the second driving signal and the second data signal for controlling the second driving group GIP _ B, wherein the second data signal may be the inversion of the first data signal, which may be completed by the control unit, taking the display frame in the split-screen display mode shown in fig. 6(a) as an example, the first data signal inputted to the first driving group GIP _ a is S1-S3240, and at this time, the control unit inverts the first data signal, converts the first data signal into the second data signal S3240 '. S1' and inputs the second data signal to the second driving group GIP _ B, and controls the first driving group GIP _ a to scan from GIP _1920 to GIP _1 step by step, and the second driving group GIP _ B to scan from GIP _1921 to GIP _3840 step by step, so as to generate the split-screen display picture effect as shown in fig. 6(a), which can ensure that the user sees the same picture when facing the first display area a or the second display area B when the second display area B is folded to the back of the first display area a, and the timing diagram of the corresponding control signal is shown in fig. 6 (B).
In a specific embodiment, the display instruction may include a display mode identifier, and the control unit in the display panel may identify a currently required display mode according to the display mode identifier in the received display instruction, so as to control the first display area a and the second display area B respectively. Specifically, the display instruction may be an instruction input by a user to the control unit through the touch panel, or may be a display instruction generated by the control unit according to a current operation of the user through an automatic response, for example, when the display instruction is applied to a mobile terminal such as a mobile phone, the user may autonomously select a self-timer function through the touch panel, and input a display instruction including a self-timer mode to the control unit, so that the control unit receives the display instruction and switches the current display mode to the self-timer mode.
Furthermore, the display mode can comprise one or more of a photographing mode, a self-photographing mode, a video call mode, a perspective mode and a circulation mode, in an actual application scene, the photographing mode is the display mode triggered when the rear camera is used for photographing other people, the display of the first display area A can be controlled in the photographing mode, and the display of the second display area B provided with the rear camera is not displayed; the self-photographing mode is a display mode triggered when the front camera is used for photographing, and the first display area A provided with the front camera can be controlled not to display and the second display area B can be controlled to display in the self-photographing mode; the method comprises the following steps that in a video call mode, a first display area A provided with a front camera can be controlled not to display, and a second display area B can be controlled to display; the first display area A and the second display area B can be controlled to display pictures symmetrical along the folding line in the perspective mode, so that the transparent display effect can be achieved after the first display area A and the second display area B are folded; in the circulation mode, the first display area A and the second display area B can be controlled to display continuous complete pictures as a complete display area. It is to be understood that the display modes of the first display area a and the second display area B in the different display modes can be set according to practical situations, and are not limited to the exemplary display modes.
The following further illustrates a specific embodiment of the driving method in a specific application scenario:
the driving method of the display panel provided by the application can be applied to desktop display and mobile display, is applicable to various scenes such as schools, stations, hotel proscenums, markets and the like which need double-sided display, and can realize display effects such as full-screen display, transparent display and the like, for example, in a specific embodiment, a timing diagram of a control signal of a mobile terminal such as a mobile phone and the like in a full-screen display mode can be shown in fig. 7(B), at this time, a first driving signal and a second driving signal are respectively and sequentially input into a second display area B and a first display area a through a control unit, which is equivalent to a scanning mode of scanning from GIP _3840 to GIP _1, so that a picture displayed in a full-screen as shown in fig. 7(a) is obtained; referring to the display frame in the transparent display mode shown in fig. 8(a) and the timing diagram of the control signals shown in fig. 8(B), the same data signals S1-S3240 are simultaneously inputted into the first driving group GIP _ a and the second driving group GIP _ B by the scanning manner from the GIP _1920 to the GIP _1 and from the GIP _1921 to the GIP _3840, so as to obtain a display frame symmetrical along the folding line, and the transparent display effect can be achieved after the first display area a and the second display area B are folded.
Referring to fig. 9, fig. 9 is a flowchart illustrating a driving method of a display panel in a camera mode of a mobile phone.
As shown in fig. 6(a), the camera is provided on the second display screen B, and for convenience of description, the second display screen B provided with the camera is referred to as a rear-view screen, correspondingly, the first display screen A is called as a front screen, when a user normally uses the mobile phone, the front screen A is bright, the back screen B does not display pictures, when a system photographing request is received, for example, a photographing request triggered by a user through a photographing mode switching button (or a touch gesture, or a mechanical key) on a touch screen of a mobile phone, and the like, it is determined whether a display mode needs to be switched, when the self-photographing mode is to be switched, the current display mode needs to be switched, the current display mode is switched to be the front screen A which does not display the picture, the back screen B is bright, at the moment, the control unit outputs a second control signal to GIP _1921, the GIP _1921 of the back screen B scans to GIP _3840 step by step, and meanwhile, the back screen B receives second data signals S3240 '-S1' after inversion; then after the photographing task is finished, judging whether a turning display signal is received or not, namely judging whether a request for restoring the original display mode is received or not, if the turning display signal is received, switching the display mode to a mode that the front screen A is bright and the back screen B does not display pictures; if the turning display signal is not received, maintaining the current display mode of the front screen A not to display the picture and the bright screen of the back screen B unchanged; and if the received system photographing request is in a photographing mode, switching of the display modes is not carried out, the front screen A is kept bright, the back screen B is kept in the original display mode without displaying pictures, and the front screen A and the back screen B are turned off until a screen turning instruction is received.
Referring to fig. 10, fig. 10 is a schematic flowchart of a driving method of a display panel applied to a mobile phone in a video call mode, after receiving a request instruction of a video call, a control unit switches a display mode to a mode in which a front panel a does not display a picture and a back panel B lights up, and after the video call is ended, determines whether a flip display signal is received, if the flip display signal is received, switches the display mode to the front panel a lights up again, and if the flip display signal is not received, maintains the current display mode in which the front panel a does not display a picture and the back panel B lights up unchanged until a screen turn-off instruction is received, and the front panel a and the back panel B turn off.
In this embodiment, the control unit respectively outputs the first driving signal and the second driving signal to independently control the first display region and the second display region, so as to realize the full-screen display and the split-screen display of the first display region and the second display region, simultaneously, the input of a driving signal is controlled by matching with a clock signal (comprising a first clock signal and a second clock signal), the scanning mode is changed by selectively outputting the first driving signal to a first line scanning driving unit/a second line scanning driving unit in a first driving group and a third line scanning driving unit/a fourth line scanning driving unit in a second driving group, the picture content displayed by each display area in a screen display mode and a full screen display mode is further controlled, and the flexibility and the independence of full screen display and split screen display of the first display area and the second display area are realized; meanwhile, the driving method in the embodiment controls the two display areas by respectively outputting corresponding control signals through only one control unit, so that the cost can be saved, the size can be reduced, and the driving method can be adapted to scenes needing multi-area display.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, 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.
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 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 may be 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 above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. A driving method of a display panel, wherein the display panel includes at least two display regions, and the display panel includes at least one control unit and a plurality of line scan driving units, the plurality of line scan driving units are divided into at least two driving groups, and each driving group corresponds to one display region, the driving method includes:
the control unit acquires a display instruction;
the control unit generates a control signal according to the display instruction, wherein the control signal comprises at least two driving signals which can be mutually independent and respectively control different driving groups;
and the control unit respectively sends the at least two driving signals to the line scanning driving units of the driving groups controlled by the control unit so as to drive the display area to display by the line scanning driving units.
2. The method according to claim 1, wherein the display panel comprises at least a first display area and a second display area, the plurality of line scan driving units are divided into at least a first driving group and a second driving group, and the generating the control signal by the control unit according to the display instruction comprises:
the control signal comprises a first drive signal and a second drive signal;
the first driving signal is used for controlling the plurality of line scanning driving units of the first driving group to drive the first display area to display, and the second driving signal is used for controlling the plurality of line scanning driving units of the second driving group to drive the second display area to display.
3. The method according to claim 2, wherein the generating of the control signal by the control unit according to the display instruction comprises:
the control signal is further used for controlling the first driving signal and the second driving signal to be connected to the time node of the line scanning driving unit.
4. The method for driving a display panel according to claim 3,
the control signal is used for controlling the second driving signal to be connected to the line driving scanning units of the second driving group at a first time, and the first time is the time when the scanning of all the line scanning units in the first driving group is finished.
5. The method for driving a display panel according to claim 3,
the control signal is used for controlling the second driving signal to be connected to the row driving scanning unit of the second driving group at a second moment, and the second moment is the moment when the first driving signal is connected to the row driving scanning unit of the first driving group.
6. The method according to any of claims 2 to 5, wherein the step of sending the at least two driving signals to the line scan driving units of the driving group controlled by the control unit comprises:
the control unit sends the first driving signal to the line scanning driving unit of the first line of the first driving group so that the first driving group scans from the first line to the last line step by step;
and the control unit sends the second driving signal to the line scanning driving unit of the first line of the second driving group so as to enable the second driving group to scan from the first line to the last line step by step.
7. The method according to any of claims 2 to 5, wherein the step of sending the at least two driving signals to the line scan driving units of the driving group controlled by the control unit comprises:
the control unit sends the first driving signal to the line scanning driving unit of the last line of the first driving group so that the first driving group scans from the last line to the first line step by step;
and the control unit sends the second driving signal to the line scanning driving unit of the first line of the second driving group so as to enable the second driving group to scan from the first line to the last line step by step.
8. The method according to claim 1, wherein the display panel comprises at least a first display area and a second display area, the plurality of line scan driving units are divided into at least a first driving group and a second driving group, and the generating the control signal by the control unit according to the display instruction comprises:
the control signal comprises a first driving signal and a first data signal for controlling the first driving group; or
The control signal includes a second driving signal and a second data signal that control the second driving group, and the second data signal is an inversion of the first data signal.
9. The method according to claim 1, wherein the control unit acquiring the display instruction comprises:
the display instruction comprises a display mode identifier, and the display mode comprises one or more of a shooting mode, a self-timer mode, a video call mode, a perspective mode and a loop mode.
10. A display panel, characterized in that the display panel comprises a driving layer and a light emitting layer, the driving layer comprises a driving circuit, the driving circuit comprises at least one control unit and a plurality of line scanning driving units; the light emitting layer includes a plurality of light emitting devices; the display panel comprises at least two display areas, the plurality of line scanning driving units are divided into at least two driving groups, each driving group corresponds to one display area, the plurality of line scanning driving units are used for driving the light-emitting devices in the display areas to emit light,
the control unit is used for generating at least two driving signals, and the at least two driving signals can be mutually independent and respectively control different driving groups.
CN202110898263.9A 2021-08-05 2021-08-05 Display panel driving method and display panel Pending CN113781971A (en)

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Application publication date: 20211210