CN108877632B - Grid drive circuit, array substrate, display panel and display device - Google Patents
Grid drive circuit, array substrate, display panel and display device Download PDFInfo
- Publication number
- CN108877632B CN108877632B CN201810832972.5A CN201810832972A CN108877632B CN 108877632 B CN108877632 B CN 108877632B CN 201810832972 A CN201810832972 A CN 201810832972A CN 108877632 B CN108877632 B CN 108877632B
- Authority
- CN
- China
- Prior art keywords
- transistor
- display panel
- control unit
- shift register
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a gate drive circuit, an array substrate, a display panel and a display device, wherein the gate drive circuit comprises: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel; the control module is used for providing a cascade connection closing signal for the input end of the next stage of shift register when the display panel corresponding to the control module is folded; when the folding and restoring occur at the position of the display panel corresponding to the control module, the signal of the output end of the shift register of the previous stage is provided for the input end of the shift register of the next stage. Through the arrangement of the control module, when the display panel is folded, the shift registers behind the next-stage shift register can output grid closing signals to the corresponding grid lines under the control of the control module, so that the local display of the display panel is realized, and the power consumption of the display panel is saved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a gate driving circuit, an array substrate, a display panel and a display device.
Background
In a flat panel display panel, a gate-on signal is generally supplied to a gate of each Thin Film Transistor (TFT) of a pixel region through a gate driving circuit. The Gate driving Circuit may be formed on an Array substrate of the flat Panel display Panel through an Array process, i.e., a Gate Driver on Array (GOA) process, which not only saves cost, but also may achieve an aesthetic design of bilateral symmetry of the flat Panel display Panel (Panel), and simultaneously, may also save a Bonding area of the Gate Integrated Circuit (IC) and a wiring space of the Fan-out (Fan-out), thereby implementing a design of a narrow bezel.
The gate driving circuit in the related art is formed by cascading a plurality of cascaded shift registers, each shift register is used for providing a gate start signal to a gate line connected to a signal output end of the shift register to start the TFT of a pixel region of a corresponding row. Except the first stage of shift register, the input signal ends of the other shift registers are respectively connected with the signal output end of the shift register of the previous stage. However, when the display panel is arranged to perform local display only, for example, when the display panel is folded, a partial region of the display panel is folded to the other side, and the display panel on the side is not used for displaying, the existing gate driving circuit cannot output control signals only to partial gate lines arranged on the array substrate, or output control signals to each gate line on the array substrate step by step, so that the overall power consumption of the display panel is greatly increased.
Therefore, how to implement local display of the display panel, thereby saving power consumption of the display panel is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a gate driving circuit, an array substrate, a display panel and a display device, which are used for realizing local display of the display panel so as to reduce the power consumption of the display panel.
The gate driving circuit provided by the embodiment of the invention is used for a foldable touch display panel, and comprises: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel;
the control module is used for providing a cascade closing signal to the input end of the next stage of shift register when the display panel corresponding to the control module is folded; and when the folding and restoring are carried out at the position of the display panel corresponding to the control module, the signal of the output end of the shift register of the previous stage is provided for the input end of the shift register of the next stage.
In a possible implementation manner, in the gate driving circuit provided in the embodiment of the present invention, when the display panel corresponding to the control module is folded, the control module is specifically configured to disconnect the cascade connection between the shift register of the previous stage and the shift register of the next stage, and provide the cascade connection shutdown signal to the input end of the shift register of the next stage.
In a possible implementation manner, in the gate driving circuit provided in an embodiment of the present invention, the control module includes: the system comprises a first control unit, a second control unit and a main control unit;
the main control unit is connected with the touch electrode at the position corresponding to the display panel and provides control signals for the first control unit and the second control unit under the control of the deformation micro-voltage of the touch electrode;
the first control unit is used for disconnecting the cascade connection between the upper-stage shift register and the lower-stage shift register when the touch electrode is folded under the control of the main control unit; when the touch electrode is folded and restored, a signal of the output end of the upper-stage shift register is provided for the input end of the lower-stage shift register;
the second control unit is configured to provide the cascade shutdown signal sent by the first voltage signal terminal to the input terminal of the next stage of shift register only when the touch electrode is folded under the control of the main control unit.
In a possible implementation manner, in the gate driving circuit provided in an embodiment of the present invention, the first control unit includes: a first transistor;
the grid of the first transistor is connected with the main control unit, the first pole of the first transistor is connected with the output end of the upper-stage shift register, and the second pole of the first transistor is connected with the input end of the lower-stage shift register.
In a possible implementation manner, in the gate driving circuit provided in an embodiment of the present invention, the second control unit includes: a second transistor;
the grid electrode of the second transistor is connected with the main control unit, the first pole of the second transistor is connected with the first voltage signal end, and the second pole of the second transistor is connected with the input end of the next-stage shift register.
In a possible implementation manner, in the gate driving circuit provided in an embodiment of the present invention, the main control unit includes: an integrating amplifier, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor;
the input end of the integrating amplifier is connected with the touch electrode, and the output end of the integrating amplifier is connected with a first node;
a grid electrode of the third transistor is connected with the first node, a first pole of the third transistor is connected with a second voltage signal end, and a second pole of the third transistor is connected with the first control unit;
a grid electrode of the fourth transistor is connected with the first node, a first pole of the fourth transistor is connected with a third voltage signal end, and a second pole of the fourth transistor is connected with the first control unit;
a gate of the fifth transistor is connected to the first node, a first pole of the fifth transistor is connected to the third voltage signal terminal, and a second pole of the fifth transistor is connected to the second control unit;
a grid electrode of the sixth transistor is connected with the first node, a first pole of the sixth transistor is connected with the second voltage signal end, and a second pole of the sixth transistor is connected with the second control unit;
wherein the third transistor and the fifth transistor are N-type transistors, and the fourth transistor and the sixth transistor are P-type transistors;
the signal provided by the second voltage signal terminal is opposite to the signal provided by the third voltage signal terminal in potential.
In a possible implementation manner, in the gate driving circuit provided in the embodiment of the present invention, the control module is disposed between every two adjacent shift registers.
On the other hand, the embodiment of the invention also provides an array substrate, which comprises the gate driving circuit in the embodiment.
On the other hand, the embodiment of the invention further provides a display panel, which comprises the array substrate, the opposite substrate and a touch electrode, wherein the touch electrode is arranged on one side of the opposite substrate facing the array substrate;
the touch electrode is connected with a control module in the grid driving circuit.
On the other hand, an embodiment of the present invention further provides a display device, including: the display panel provided by the embodiment of the invention.
The invention has the following beneficial effects:
the embodiment of the invention provides a gate driving circuit, an array substrate, a display panel and a display device, wherein the gate driving circuit is used for a foldable touch display panel and comprises: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel; the control module is used for providing a cascade closing signal to the input end of the next stage of shift register when the display panel corresponding to the control module is folded; and when the folding and restoring are carried out at the position of the display panel corresponding to the control module, the signal of the output end of the shift register of the previous stage is provided for the input end of the shift register of the next stage. By arranging the control module between at least two adjacent shift registers, when the display panel is folded, the shift registers behind the next shift register can output grid closing signals to the corresponding grid lines under the control of the control module, so that the local display of the display panel is realized, and the power consumption of the display panel is saved.
Drawings
Fig. 1 is a schematic structural diagram of a gate driving circuit in the related art;
fig. 2 is a schematic structural diagram of a gate driving circuit according to an embodiment of the invention;
fig. 3 is a second schematic structural diagram of a gate driving circuit according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a control module in a gate driving circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a control module in a gate driving circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a main control unit in a control module in a gate driving circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a gate driving circuit according to an embodiment of the invention.
Detailed Description
As shown in fig. 1, a gate driving circuit in the related art includes a plurality of shift registers connected in cascade: SR (1), SR (2) … SR (N) … SR (N-1), SR (N) (N shift registers, N is equal to or less than 1 and equal to or less than N), signal lines V1, V2, V3, CKB, CK, STV and Res, signal terminals clk, clkb, vref1, vref2 and vref 3; except for the first stage shift register SR (1), the signal output end output of each stage of shift register SR (n) is respectively connected with the reset signal end reset of the adjacent previous stage shift register SR (n-1); except for the last stage of shift register SR (N), the signal output terminals output of the shift registers SR (n) of each stage are respectively connected to the input signal terminals input of the next stage of shift register SR (n +1) adjacent thereto.
In the arrangement of the gate driving circuit, each stage of shift register sends a gate scanning signal to the corresponding gate line, that is, when the display panel displays, only full-screen display can be performed, but only a partial area of the display panel cannot be displayed.
Embodiments of the present invention provide a gate driving circuit, an array substrate, a display panel and a display device, so as to reduce power consumption of the display panel.
In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of a gate driving circuit, an array substrate, a display panel and a display device according to embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not to be used for limiting the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
Specifically, an embodiment of the present invention provides a gate driving circuit for a foldable touch display panel, as shown in fig. 2, the gate driving circuit includes: the display panel comprises a plurality of cascaded shift registers (SR (N-1), SR (N +1) and SR (N +2)) and a control module 1 positioned between at least two adjacent shift registers (SR (N) and SR (N +1)), wherein the control module 1 is connected with touch electrodes at corresponding positions in the display panel;
the control module 1 is used for providing a cascade connection closing signal for the input end of a next stage shift register SR (N +1) when the display panel corresponding to the control module is folded; when the control module 1 performs folding and restoring at the corresponding position of the display panel, the signal at the output end of the shift register SR (N) at the previous stage is provided to the input end of the shift register SR (N +1) at the next stage.
Each stage of shift register (SR (N-1), SR (N +1), and SR (N +2)) is connected to a corresponding gate line, and is used to control whether a signal is input to each pixel PX connected to the gate line for display.
In the gate driving circuit provided in an embodiment of the present invention, the gate driving circuit is used for a foldable touch display panel, and the gate driving circuit includes: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel; the control module is used for providing a cascade connection closing signal for the input end of the next stage of shift register when the display panel corresponding to the control module is folded; when the folding and restoring occur at the position of the display panel corresponding to the control module, the signal of the output end of the shift register of the previous stage is provided for the input end of the shift register of the next stage. By arranging the control module between at least two adjacent shift registers, when the display panel is folded, the shift registers behind the next shift register can output grid closing signals to the corresponding grid lines under the control of the control module, so that the local display of the display panel is realized, and the power consumption of the display panel is saved.
When the touch control display panel is folded, the control module controls whether the upper-stage shift register is cascaded with the lower-stage shift register according to the change of the surface voltage of the touch control electrode at the foldable position, namely, when the touch control display panel is folded, the display panel below the foldable position does not display, so that the power consumption of the display panel is saved. The folding position is detected in a mode of combining the touch electrode with the grid drive circuit, and a part of the display panel folded to the other side is not used for displaying.
It should be noted that after the touch display panel is folded, the portion of the display panel folded to the other side is not displayed, and after the data of the original frame of image is converted, the data is displayed in the portion of the display panel not folded to the other side, that is, after the touch display panel is folded, the image displayed in the portion of the display panel not folded to the other side is still a complete frame of image.
It should be noted that the specific setting position of the control module is not specifically limited, and the specific setting position is determined according to the specific application scenario, and the control module may be set between two adjacent shift registers at multiple positions according to the application requirement, so as to realize that multiple positions of the touch display panel can be folded.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, when the display panel corresponding to the control module is folded, the control module is specifically configured to disconnect the cascade connection between the shift register of the previous stage and the shift register of the next stage, and provide a cascade connection closing signal to the input end of the shift register of the next stage.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, as shown in fig. 3, the gate driving circuit may be a dual-side driving circuit, a plurality of cascaded shift registers (SR (N-1), SR (N +1), and SR (N +2)) are disposed on both sides of the array substrate, and a control module 1 is disposed at a corresponding position, and specifically, whether the gate driving circuit is single-side driving or dual-side driving is selected according to an actual use situation.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, as shown in fig. 4, the control module 1 includes: a first control unit 11, a second control unit 12 and a main control unit 13;
the main control unit 13 is connected with the touch electrode at the corresponding position of the display panel and provides a control signal to the first control unit 11 and the second control unit 12 under the control of the touch electrode deformation micro-voltage;
the first control unit 11 is configured to disconnect the cascade connection between the shift register SR (N) (or N +1) (or N)) of the previous stage and the shift register SR (or N +1)) of the next stage when the touch electrode is folded under the control of the main control unit 13; when the touch electrode is folded and restored, a signal of the output end of the shift register SR (N) at the previous stage is provided to the input end of the shift register SR (N +1) at the next stage;
the second control unit 12 is configured to provide the cascade close signal sent by the first voltage signal terminal V1 to the input terminal of the next stage of shift register SR (N +1) only when the touch electrode is folded under the control of the main control unit 13.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, as shown in fig. 5, the first control unit 11 includes: a first transistor T1;
the gate of the first transistor T1 is connected to the main control unit 13, the first pole of the first transistor T1 is connected to the output terminal of the previous stage shift register SR (N), and the second pole of the first transistor T1 is connected to the input terminal of the next stage shift register SR (N + 1).
Specifically, in the above gate driving provided by the embodiment of the present invention, as shown in fig. 5, the first transistor T1 may be an N-type transistor, and at this time, when the control signal provided by the main control unit 13 to the gate of the first transistor T1 is a high-level signal, the first transistor T1 is in a conducting state, and when the control signal provided by the main control unit 13 to the gate of the first transistor T1 is a low-level signal, the first transistor T1 is in a blocking state; the first transistor T1 may also be a P-type transistor (not specifically shown in the figure), in which case, when the control signal provided by the main control unit 13 to the gate of the first transistor T1 is a high-level signal, the first transistor T1 is in an off state, and when the control signal provided by the main control unit 13 to the gate of the first transistor T1 is a low-level signal, the first transistor T1 is in an on state; and is not limited herein.
Specifically, in the gate driving circuit provided in the embodiment of the present invention, when the first transistor is in a conducting state under the control of the main control unit, the shift register of the previous stage and the shift register of the next stage can be normally cascaded; when the first transistor is in a cut-off state under the control of the main control unit, the shift register of the previous stage and the shift register of the next stage cannot be normally cascaded.
The above is merely to illustrate a specific structure of the first control unit in the gate driving circuit, and in the specific implementation, the specific structure of the first control unit is not limited to the above structure provided in the embodiment of the present invention, and may be other structures known to those skilled in the art, and is not limited herein.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, as shown in fig. 5, the second control unit 12 includes: a second transistor T2;
the gate of the second transistor T2 is connected to the main control unit 13, the first pole of the second transistor T2 is connected to the first voltage signal terminal V1, and the second pole of the second transistor T2 is connected to the input terminal of the next shift register SR (N + 1).
Specifically, in the above gate driving provided by the embodiment of the present invention, as shown in fig. 5, the second transistor T2 may be an N-type transistor, and at this time, when the control signal provided by the main control unit 13 to the gate of the second transistor T2 is a high-level signal, the second transistor T2 is in a conducting state, and when the control signal provided by the main control unit 13 to the gate of the second transistor T2 is a low-level signal, the second transistor T2 is in a blocking state; the second transistor T2 may also be a P-type transistor (not specifically shown in the figure), in which case, when the control signal provided by the main control unit 13 to the gate of the second transistor T2 is a high-level signal, the second transistor T2 is in an off state, and when the control signal provided by the main control unit 13 to the gate of the second transistor T2 is a low-level signal, the second transistor T2 is in an on state; and is not limited herein.
Specifically, in the gate driving circuit provided in the embodiment of the present invention, when the second transistor is in a conducting state under the control of the main control unit, a signal of the first voltage signal terminal is provided to the input terminal of the next-stage shift register, so as to prevent the next-stage shift register from being turned on due to signal residue, thereby further ensuring that the previous-stage shift register and the next-stage shift register cannot be normally cascaded.
The above is merely to illustrate a specific structure of the second control unit in the gate driving circuit, and in a specific implementation, the specific structure of the second control unit is not limited to the above structure provided in the embodiment of the present invention, and may be other structures known to those skilled in the art, and is not limited herein.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, as shown in fig. 6, the main control unit 13 includes: an integrating amplifier, a third transistor T3, a fourth transistor T4, a fifth transistor T5, and a sixth transistor T6;
the input end of the integrating amplifier is connected with the touch electrode 14, and the output end of the integrating amplifier is connected with the first node N1;
a gate electrode of the third transistor T3 is coupled to the first node N1, a first pole of the third transistor T3 is coupled to the second voltage signal terminal V2, and a second pole of the third transistor T3 is coupled to the first control unit 11;
a gate of the fourth transistor T4 is connected to the first node N1, a first pole of the fourth transistor T4 is connected to the third voltage signal terminal V3, and a second pole of the fourth transistor T4 is connected to the first control unit 11;
a gate of the fifth transistor T5 is connected to the first node N1, a first pole of the fifth transistor T5 is connected to the third voltage signal terminal V3, and a second pole of the fifth transistor T5 is connected to the second control unit 12;
a gate of the sixth transistor T6 is connected to the first node N1, a first pole of the sixth transistor T6 is connected to the second voltage signal terminal V2, and a second pole of the sixth transistor T6 is connected to the second control unit 12;
wherein the third transistor T3 and the fifth transistor T5 are N-type transistors, and the fourth transistor T4 and the sixth transistor T6 are P-type transistors;
the signal provided by the second voltage signal terminal V2 is opposite in potential to the signal provided by the third voltage signal terminal V3.
Specifically, in the gate driving circuit provided in the embodiment of the invention, as shown in fig. 6, when the touch electrode 14 is folded and charge accumulation occurs, the signal is amplified by the integrating amplifier to make the first node N1 be at a high level, at this time, the fourth transistor T4 and the sixth transistor T6 are turned on, the third transistor T3 and the fifth transistor T5 are turned off, the turned-on fourth transistor T4 provides the voltage of the third voltage signal terminal V3 to the first control unit 11, and the turned-on sixth transistor T6 provides the voltage of the second voltage signal terminal V2 to the second control unit 12; when the touch electrode 14 is folded and restored, the voltage thereof is decreased, the signal is amplified by the integrating amplifier, so that the first node N1 is at a low level, at this time, the third transistor T3 and the fifth transistor T5 are turned on, the fourth transistor T4 and the sixth transistor T6 are turned off, the turned-on third transistor T3 supplies the voltage of the second voltage signal terminal V2 to the first control unit 11, and the turned-on fifth transistor T5 supplies the voltage of the third voltage signal terminal V3 to the second control unit 12. Since the second voltage signal terminal V2 has an opposite potential to the signal of the third voltage signal terminal V3, the potentials of the signals supplied to the first control unit 11 and the second control unit 12 are always opposite regardless of whether the first node N1 is high or low.
It should be noted that the structures of the integrating amplifier, such as the capacitor C, the resistor R, and the signal terminals VSS, are all conventional structures, and the working principle thereof is the same as that of the conventional structures, and will not be described herein again.
In a specific implementation, each Transistor may be a Thin Film Transistor (TFT) or a Metal Oxide Semiconductor field effect Transistor (MOS), and is not limited herein. In a specific implementation, the first pole and the second pole of the transistors can be the source or the drain of the transistor, and the functions can be interchanged according to the types of the transistors and different input signals, and are not particularly distinguished here.
Optionally, in the gate driving circuit provided in the embodiment of the present invention, a control module is disposed between every two adjacent shift registers.
Specifically, in the gate driving circuit provided in the embodiment of the present invention, the control module is disposed between each two adjacent shift registers, so that the cascade relationship between each two adjacent shift registers can be controlled at any time, and when the gate driving circuit is applied to the foldable touch display panel, the gate driving circuit can be folded at any position of the touch display panel.
Based on the same inventive concept, an embodiment of the present invention further provides an array substrate, including the gate driving circuit in any of the above embodiments.
Based on the same inventive concept, an embodiment of the present invention further provides a display panel, including the array substrate, the opposite substrate, and a touch electrode disposed on one side of the opposite substrate facing the array substrate in any of the embodiments;
the touch electrode is connected with a control module in the grid driving circuit.
The operation of the foldable touch display panel will be specifically described with reference to the gate driving circuit example shown in fig. 7, in which the fourth transistor and the sixth transistor are N-type transistors, the first transistor, the second transistor, the third transistor and the fifth transistor are P-type transistors, the first voltage signal terminal is a high-level signal, the second voltage signal terminal is a low-level signal, and the third voltage signal terminal is a high-level signal.
Example one
In the folding process of the display panel, that is, from an unfolded state to a folded state, the touch electrode 14 is stretched and slightly deformed, the surface of the touch electrode is subjected to charge accumulation, the accumulated charge is transmitted to the input end of the integrating amplifier, the integrating amplifier amplifies a signal, so that the first node N1 is at a high potential, the fourth transistor T4 and the sixth transistor T6 are turned on, the third transistor T3 and the fifth transistor T5 are turned off, the turned-on fourth transistor T4 supplies a high-level signal of the third voltage signal end V3 to the gate of the first transistor T1, so that the first transistor T1 is turned off, and the shift register SR (N) at the previous stage and the shift register SR (N +1) at the next stage cannot be normally cascaded; the turned-on sixth transistor T6 provides the low level signal provided by the second voltage signal terminal V2 to the gate of the second transistor T2, the second transistor T2 is turned on, and provides the high level signal provided by the first voltage signal terminal V1 to the input terminal of the next stage shift register SR (N +1), so as to replace the pulse signal of the normal cascade connection, so that the next stage shift register SR (N +1) inputs the gate off signal to the corresponding gate line, and thus all shift registers below the next stage shift register SR (N +1) input the gate off signal to the corresponding gate line, thereby realizing that the part of the display panel folded to the other side cannot display, and reducing the power consumption of the display panel.
Example two
In the folding and restoring process of the display panel, namely from the folded state to the unfolded state, the touch electrode 14 shrinks slightly to deform slightly, the impedance of the touch electrode is reduced, the voltage is reduced, the integration amplifier amplifies the signal, the first node N1 is at a low potential, so that the third transistor T3 and the fifth transistor T5 are turned on, the fourth transistor T4 and the sixth transistor T6 are turned off, the turned-on third transistor T3 provides a low-level signal of the second voltage signal terminal V2 to the gate of the first transistor T1, so that the first transistor T1 is turned on, the shift register SR (N) at the previous stage is normally cascaded with the shift register SR (N +1) at the next stage, and the whole display panel displays; the turned-on fifth transistor T5 provides the high level signal provided from the third voltage signal terminal V3 to the gate of the second transistor T2, the second transistor T2 is turned off, and the high level signal provided from the first voltage signal terminal V1 cannot be provided to the input terminal of the next stage shift register SR (N +1) to avoid interference with the cascade signal.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
The embodiment of the invention provides a gate driving circuit, an array substrate, a display panel and a display device, wherein the gate driving circuit is used for a foldable touch display panel and comprises: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel; the control module is used for providing a cascade closing signal to the input end of the next stage of shift register when the display panel corresponding to the control module is folded; and when the folding and restoring are carried out at the position of the display panel corresponding to the control module, the signal of the output end of the shift register of the previous stage is provided for the input end of the shift register of the next stage. By arranging the control module between at least two adjacent shift registers, when the display panel is folded, the shift registers behind the next shift register can output grid closing signals to the corresponding grid lines under the control of the control module, so that the local display of the display panel is realized, and the power consumption of the display panel is saved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A gate driving circuit for a foldable touch display panel, comprising: the display panel comprises a plurality of cascaded shift registers and a control module positioned between at least two adjacent shift registers, wherein the control module is connected with touch electrodes at corresponding positions in the display panel;
the control module is used for providing a cascade closing signal to the input end of the next stage of shift register when the display panel corresponding to the control module is folded; when the display panel corresponding to the control module is folded and restored, a signal of an output end of a shift register of the previous stage is provided for an input end of a shift register of the next stage;
the control module includes: the system comprises a first control unit, a second control unit and a main control unit;
the main control unit is connected with the touch electrode at the position corresponding to the display panel and provides control signals for the first control unit and the second control unit under the control of the deformation micro-voltage of the touch electrode;
the first control unit is used for disconnecting the cascade connection between the upper-stage shift register and the lower-stage shift register when the touch electrode is folded under the control of the main control unit; when the touch electrode is folded and restored, a signal of the output end of the upper-stage shift register is provided for the input end of the lower-stage shift register;
the second control unit is configured to provide the cascade shutdown signal sent by the first voltage signal terminal to the input terminal of the next stage of shift register only when the touch electrode is folded under the control of the main control unit.
2. The gate driving circuit according to claim 1, wherein when the control module folds at a position of the display panel corresponding to the control module, the control module is specifically configured to disconnect a cascade between the shift register of the previous stage and the shift register of the next stage and provide the cascade off signal to an input terminal of the shift register of the next stage.
3. The gate drive circuit of claim 1, wherein the first control unit comprises: a first transistor;
the grid of the first transistor is connected with the main control unit, the first pole of the first transistor is connected with the output end of the upper-stage shift register, and the second pole of the first transistor is connected with the input end of the lower-stage shift register.
4. The gate drive circuit of claim 1, wherein the second control unit comprises: a second transistor;
the grid electrode of the second transistor is connected with the main control unit, the first pole of the second transistor is connected with the first voltage signal end, and the second pole of the second transistor is connected with the input end of the next-stage shift register.
5. The gate drive circuit of claim 1, wherein the main control unit comprises: an integrating amplifier, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor;
the input end of the integrating amplifier is connected with the touch electrode, and the output end of the integrating amplifier is connected with a first node;
a grid electrode of the third transistor is connected with the first node, a first pole of the third transistor is connected with a second voltage signal end, and a second pole of the third transistor is connected with the first control unit;
a grid electrode of the fourth transistor is connected with the first node, a first pole of the fourth transistor is connected with a third voltage signal end, and a second pole of the fourth transistor is connected with the first control unit;
a gate of the fifth transistor is connected to the first node, a first pole of the fifth transistor is connected to the third voltage signal terminal, and a second pole of the fifth transistor is connected to the second control unit;
a grid electrode of the sixth transistor is connected with the first node, a first pole of the sixth transistor is connected with the second voltage signal end, and a second pole of the sixth transistor is connected with the second control unit;
wherein the third transistor and the fifth transistor are N-type transistors, and the fourth transistor and the sixth transistor are P-type transistors;
the signal provided by the second voltage signal terminal is opposite to the signal provided by the third voltage signal terminal in potential.
6. A gate drive circuit as claimed in any one of claims 1 to 5, wherein the control module is disposed between each adjacent two of the shift registers.
7. An array substrate comprising the gate driver circuit according to any one of claims 1 to 6.
8. A display panel comprising the array substrate of claim 7, an opposite substrate, and a touch electrode disposed on a side of the opposite substrate facing the array substrate;
the touch electrode is connected with the control module in the grid driving circuit.
9. A display device characterized by comprising the display panel according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832972.5A CN108877632B (en) | 2018-07-26 | 2018-07-26 | Grid drive circuit, array substrate, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832972.5A CN108877632B (en) | 2018-07-26 | 2018-07-26 | Grid drive circuit, array substrate, display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108877632A CN108877632A (en) | 2018-11-23 |
| CN108877632B true CN108877632B (en) | 2021-09-10 |
Family
ID=64305236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810832972.5A Active CN108877632B (en) | 2018-07-26 | 2018-07-26 | Grid drive circuit, array substrate, display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108877632B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243309A (en) * | 2018-11-29 | 2019-01-18 | 昆山国显光电有限公司 | Display controller, display panel and display device |
| CN111192545B (en) * | 2019-02-27 | 2022-09-13 | 京东方科技集团股份有限公司 | Gate driving circuit, gate driving method, folding display panel and display device |
| KR20200115830A (en) * | 2019-03-27 | 2020-10-08 | 삼성디스플레이 주식회사 | Display device and method of driving the display device |
| CN112017570B (en) * | 2019-05-31 | 2022-08-19 | 京东方科技集团股份有限公司 | Gate drive circuit, display device and display control method |
| CN110136634B (en) * | 2019-06-28 | 2022-06-28 | 武汉天马微电子有限公司 | Display panel, driving method and display device |
| CN111179812B (en) * | 2020-03-16 | 2023-01-17 | 昆山国显光电有限公司 | Display panel, driving method thereof and display device |
| CN111402806B (en) * | 2020-04-26 | 2021-08-27 | 京东方科技集团股份有限公司 | Driving circuit, driving method thereof and display panel |
| CN111583847B (en) * | 2020-05-08 | 2022-02-01 | 武汉华星光电半导体显示技术有限公司 | Display module, driving method thereof and display device |
| CN113823207A (en) * | 2020-06-18 | 2021-12-21 | 华为技术有限公司 | Drive control method and related equipment |
| CN111785208B (en) * | 2020-08-05 | 2022-03-04 | 京东方科技集团股份有限公司 | Panel driving circuit, display panel, display device and panel driving method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202058412U (en) * | 2011-06-01 | 2011-11-30 | 北京京东方光电科技有限公司 | Foldable display |
| TWI667644B (en) * | 2013-07-19 | 2019-08-01 | 日商半導體能源研究所股份有限公司 | Data processing device |
| CN104658466B (en) * | 2015-01-27 | 2017-05-10 | 京东方科技集团股份有限公司 | GOA circuit and driving method thereof, as well as display panel and display device |
| CN105700754B (en) * | 2016-03-11 | 2019-02-15 | 上海天马微电子有限公司 | A kind of touch-control display panel and touch control display apparatus |
| CN105976759B (en) * | 2016-07-29 | 2019-09-06 | 京东方科技集团股份有限公司 | Driving circuit, display panel, display equipment and driving method |
| CN108227991B (en) * | 2018-01-03 | 2021-06-01 | 厦门天马微电子有限公司 | Display panel, display device and detection method |
-
2018
- 2018-07-26 CN CN201810832972.5A patent/CN108877632B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108877632A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108877632B (en) | Grid drive circuit, array substrate, display panel and display device | |
| US10803823B2 (en) | Shift register unit, gate driving circuit, and driving method | |
| CN110808015B (en) | Shift register unit, gate drive circuit, display device and drive method | |
| US9847067B2 (en) | Shift register, gate driving circuit, display panel, driving method thereof and display device | |
| US10916166B2 (en) | Shift register unit, shift register circuitry and display device | |
| CN108597437B (en) | Shifting register, grid driving circuit, driving method of grid driving circuit and display device | |
| US20190139475A1 (en) | Shift register circuit, and driving method thereof, gate drive circuit and display device | |
| CN111971737B (en) | Shift register unit, grid driving circuit, display device and driving method | |
| US11100841B2 (en) | Shift register, driving method thereof, gate driving circuit, and display device | |
| CN108182905B (en) | Switching circuit, control unit, display device, gate driving circuit and method | |
| WO2019237956A1 (en) | Shift register and driving method therefor, gate drive circuit, and display device | |
| CN107909959B (en) | Shifting register unit, driving method thereof, grid driving circuit and display device | |
| US11676524B2 (en) | Shift register, gate driving circuit and display panel | |
| US11270649B2 (en) | Shift register, driving method thereof, driving circuit, and display device | |
| CN108962330B (en) | Shifting register and driving method thereof, grid driving circuit and display device | |
| CN108461062B (en) | Shifting register, array substrate, driving method of array substrate and display device | |
| US20190114951A1 (en) | Gate driving circuits and display apparatuses | |
| CN108877721B (en) | Shift register unit, gate drive circuit, display device and drive method | |
| US11094389B2 (en) | Shift register unit and driving method, gate driving circuit, and display device | |
| CN108364622B (en) | Shift register unit and driving method, driving device and display device thereof | |
| US20180218688A1 (en) | Shift register, gate driving circuit, array substrate | |
| US20190355433A1 (en) | Shift register unit, gate drive circuit, display device and drive method | |
| US11222565B2 (en) | Shift register, gate driving circuit and driving method thereof, display apparatus | |
| CN107123389B (en) | Shift register, grid drive circuit and display device | |
| CN108538233B (en) | Shifting register, driving method thereof, grid driving circuit and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |