CN113436573A - Display panel, display panel driving method and display device - Google Patents
Display panel, display panel driving method and display device Download PDFInfo
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- CN113436573A CN113436573A CN202110666268.9A CN202110666268A CN113436573A CN 113436573 A CN113436573 A CN 113436573A CN 202110666268 A CN202110666268 A CN 202110666268A CN 113436573 A CN113436573 A CN 113436573A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 4
- 239000010409 thin film Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 12
- 238000000059 patterning Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
Abstract
The invention discloses a display panel, a display panel driving method and a display device, wherein the display panel comprises: a substrate including a plurality of reset signal lines and a plurality of pixel circuits; the touch layer is arranged on one side of the substrate and comprises a plurality of touch electrode blocks, at least part of reset signal lines are electrically connected with the touch electrode blocks respectively, and the part of reset signal lines electrically connected with the touch electrode blocks are used for sending reset voltage signals to the pixel circuits in the display stage of the display panel and sending touch driving signals to the touch electrode blocks and transmitting touch induction signals returned by the touch electrode blocks in the touch stage. The reset signal line is multiplexed into the touch signal line, so that the detection of the touch position of the display panel is realized, the required wiring quantity is reduced, the integration level of the display panel is effectively improved, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a display panel, a display panel driving method and a display device.
Background
With the improvement of display technology, the display panel gradually becomes thinner and lighter, and the display panel with touch function has become very popular. The existing touch display panel mainly adopts a capacitive touch structure. The capacitive touch structure can be divided into a self-capacitance type capacitive structure and a mutual capacitance type capacitive structure, but the integration level of touch and display of the existing touch display panel is relatively low, and the manufacturing cost is high.
Therefore, a new display panel, a display panel driving method and a display device are needed.
Disclosure of Invention
The embodiment of the invention provides a display panel, a display panel driving method and a display device, which are used for multiplexing a reset signal line into a touch signal line, so that the detection of the touch position of the display panel is realized, the required wiring quantity is reduced, the integration level of the display panel is effectively improved, and the cost is reduced.
An embodiment of the present invention provides a display panel, including: a substrate including a plurality of reset signal lines and a plurality of pixel circuits; the touch layer is arranged on one side of the substrate and comprises a plurality of touch electrode blocks, at least part of the reset signal lines are electrically connected with the touch electrode blocks respectively, and the reset signal lines are used for sending reset voltage signals to the pixel circuits in the display stage of the display panel and sending touch driving signals to the touch electrode blocks in the touch stage and transmitting touch induction signals returned by the touch electrode blocks.
According to one aspect of the invention, the touch control device further comprises a control chip, each reset signal line is electrically connected with the control chip, and the control chip is used for sending the reset voltage signal and the touch control driving signal to the reset signal lines in a time-sharing manner.
According to an aspect of the present invention, the reset signal line includes a plurality of first sub-signal lines extending along a first direction and a plurality of second sub-signal lines extending along a second direction, the first sub-signal lines are electrically connected to the touch electrode blocks in a one-to-one correspondence, the first sub-signal lines are electrically connected to the pixel circuits, the second sub-signal lines are electrically connected to the pixel circuits, the first sub-signal lines and the second sub-signal lines are insulated from each other, and the first direction intersects the second direction.
According to an aspect of the present invention, each of the first sub-signal lines is electrically connected to at least the pixel circuit covered by the orthographic projection of the corresponding connected touch electrode block on the substrate through a via hole.
According to an aspect of the present invention, the first sub-signal lines are insulated from each other and electrically connected to the control chip, and the second sub-signal lines are electrically connected to the control chip through a connection line located in a non-display area of the display panel; the control chip is used for sending a touch driving signal to the first sub-signal line and sending a high-resistance signal to the second sub-signal line in the touch stage, and sending a reset voltage signal to the first sub-signal line and the second sub-signal line in the display stage.
According to an aspect of the present invention, the substrate includes a plurality of metal layers stacked, and the reset signal line and at least one of the metal layers are disposed in the same layer.
According to an aspect of the present invention, the pixel circuit includes a driving thin film transistor and a reset unit, a gate of the driving thin film transistor is formed by patterning the metal layer, each reset signal line and the gate of the driving thin film transistor are disposed in the same layer, the reset unit includes a first reset unit electrically connected to the gate of the driving thin film transistor, and each reset signal line transmits the reset voltage signal to the gate of the driving thin film transistor through the first reset unit in the display period.
According to another aspect of the invention, the reset voltage signal is a constant voltage; the touch driving signal is a rectangular pulse voltage.
In another aspect, an embodiment of the present invention further provides a display device, including the display panel in any one of the above embodiments.
Compared with the prior art, the display panel provided by the embodiment of the invention comprises a substrate, reset signal lines of the substrate, a pixel circuit and a touch layer, wherein at least part of the reset signal lines are electrically connected with the pixel circuit and the touch electrode blocks, namely, the reset signal lines can send reset voltage signals to the pixel circuit in the display stage of the display panel to realize the display function of the display panel, and simultaneously, each touch electrode block can send touch driving signals and transmit touch sensing signals returned by the touch electrode blocks in the touch stage of the display panel, namely, the touch electrode blocks are self-capacitance touch electrodes, the reset signal lines are multiplexed into the touch signal lines to realize the detection of the touch position of the display panel, the required number of routing lines is reduced, the integration level of the display panel is effectively improved, the cost is reduced, and as the reset signal lines are multiplexed in a time-sharing manner, the mutual interference between the display signal and the touch signal can be effectively prevented, and the touch signal-to-noise ratio of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a film structure diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a connection between a touch electrode block and a reset signal line according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating connection between another touch electrode block and a reset signal line according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for driving a display panel according to an embodiment of the present invention;
fig. 5 is a signal timing diagram of a reset signal line according to an embodiment of the present invention.
In the drawings:
1-a substrate; 2-a light emitting device layer; 21-an anode; 22-a light-emitting layer; 23-a cathode; 3-touch electrode block; 4-a reset signal line; 41-first sub-signal line; 42-a second sub-signal line; 5-packaging layer; 6-a control chip; a T-drive thin film transistor; g-grid.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present invention, the display panel driving method and the display device according to the embodiments of the present invention will be described in detail below with reference to fig. 1 to 5.
Referring to fig. 1 to 5, an embodiment of the invention provides a display panel, including: a substrate 1 including a plurality of reset signal lines 4 and a plurality of pixel circuits; the touch layer is arranged on one side of the substrate 1 and comprises a plurality of touch electrode blocks 3, at least part of reset signal lines 4 are electrically connected with the touch electrode blocks 3 respectively, and part of the reset signal lines 4 electrically connected with the touch electrode blocks 3 are used for sending reset voltage signals to the pixel circuits in the display stage of the display panel and sending touch driving signals to the touch electrode blocks 3 and transmitting touch induction signals returned by the touch electrode blocks 3 in the touch stage.
The display panel provided by the embodiment of the invention comprises a substrate 1, a reset signal line 4 of the substrate 1, a pixel circuit and a touch layer, wherein at least part of the reset signal line 4 is electrically connected with the pixel circuit and is also electrically connected with a touch electrode block 3, namely, the reset signal line 4 can send a reset voltage signal to the pixel circuit in the display stage of the display panel to realize the display function of the display panel, and simultaneously, each touch electrode block 3 can send a touch driving signal and transmit a touch sensing signal returned by the touch electrode block 3 in the touch stage of the display panel, namely, the touch electrode block 3 is a self-capacitance touch electrode, the reset signal line 4 is multiplexed into a touch signal line to realize the detection of the touch position of the display panel, the required wiring quantity is reduced, the integration degree of the display panel is effectively improved, and because the reset signal line 4 is multiplexed in time, the mutual interference between the display signal and the touch signal can be effectively prevented, and improving the touch signal-to-noise ratio of the display panel.
It should be noted that, because the touch electrode blocks 3 are in a self-capacitance form, the reset signal lines 4 need to be connected to the touch electrode blocks 3 in a one-to-one correspondence manner, so as to determine the touch position of the display panel according to the voltage or capacitance change between the touch driving signal and the touch sensing signal, and at least a part of the reset signal lines 4 are electrically connected to the pixel circuits and the touch electrode blocks 3, specifically, a part of the reset signal lines 4 may be electrically connected to the pixel circuits only, and the part of the reset signal lines 4 may be electrically connected to a plurality of pixel circuits simultaneously, so as to improve the uniformity of signals received between the pixel circuits, and further improve the uniformity of the entire display panel during display.
Optionally, a packaging layer 5 is disposed on a side of the touch layer away from the substrate 1, and specifically, film packaging, glass packaging, and the like may be adopted.
Referring to fig. 2, in order to further improve the integration of the display panel, in some optional embodiments, the display panel further includes a control chip 6, each reset signal line 4 is electrically connected to the control chip 6, and the control chip 6 is configured to send a reset voltage signal and a touch driving signal to the reset signal line 4 in a time-sharing manner.
It should be noted that the control chip 6 can send the reset voltage signal and the Touch driving signal to the reset signal line 4 in a time-sharing manner and receive the Touch sensing signal, that is, the control chip 6 is an integrated chip with a TDDI (Touch and Display Driver Integration), and there is no need to provide two Touch chips and a Display chip, so that the occupied space of the chip can be effectively reduced, and the Integration level of the Display panel can be improved. The control chip 6 controls the output period of the reset voltage signal and the touch driving signal, so that the problem of mutual interference of the reset voltage signal and the touch driving signal is avoided.
Referring to fig. 3, in order to ensure the display effect of the display panel, in some optional embodiments, the reset signal line 4 includes a plurality of first sub-signal lines 41 extending along a first direction and a plurality of second sub-signal lines 42 extending along a second direction, each of the first sub-signal lines 41 is electrically connected to the touch electrode block 3 in a one-to-one correspondence manner, the first sub-signal lines 41 are electrically connected to the pixel circuits, the second sub-signal lines 42 are electrically connected to the pixel circuits, the first sub-signal lines 41 and the second sub-signal lines 42 are insulated from each other, and the first direction intersects the second direction.
It can be understood that each of the first sub-signal lines 41 is electrically connected to the touch electrode block 3 in a one-to-one correspondence manner to accurately determine the touch position of the display panel, and the first sub-signal lines 41 are electrically connected to the pixel circuits, and the first sub-signal lines 41 may be connected to the pixel circuits in a one-to-one correspondence manner, or one first sub-signal line 41 may be connected to a plurality of pixel circuits in a corresponding manner to improve signal uniformity among the pixel circuits. And the second sub-signal line 42 is electrically connected only to the pixel circuit. Alternatively, one second sub-signal line 42 may be connected to a plurality of pixel circuits arranged in the second direction to ensure uniformity of the reset voltage signal received by the portion of the pixel circuits. Optionally, the first direction and the second direction are perpendicular to each other, and the touch electrode blocks 3 are respectively distributed in an array along the first direction and the second direction.
In some optional embodiments, each first sub-signal line 41 is electrically connected to at least the pixel circuit covered by the orthographic projection of the corresponding connected touch electrode block 3 on the substrate 1 through the via hole.
It can be understood that, since one touch electrode block 3 usually covers a plurality of pixel circuits, in order to be able to synchronously send reset voltage signals to the portion of the pixel circuits, one first sub-signal line 41 electrically connected to the touch electrode block 3 is electrically connected to each pixel circuit by providing a plurality of vias, so as to improve the uniformity of the reset voltage signals received by the portion of each pixel circuit, since the touch electrode block 3 covers the display area of the whole display panel, each first sub-signal line 41 is electrically connected to each pixel circuit of the display panel, so as to implement the display function of the whole display panel.
In some alternative embodiments, the first sub-signal lines 41 are insulated from each other and electrically connected to the control chip 6, and the second sub-signal lines 42 are electrically connected to the control chip 6 through the connection lines 43 located in the non-display area of the display panel; the control chip 6 is configured to send a touch signal to the first sub-signal line 41 and send a high-impedance signal to the second sub-signal line 42 in the touch phase, and send a reset voltage signal to the first sub-signal line 41 and the second sub-signal line 42 simultaneously in the display phase.
It can be understood that each of the first sub-signal lines 41 needs to be electrically connected to a different touch electrode block 3 to detect the touch position, and therefore, the first sub-signal lines 41 need to be insulated from each other to avoid mutual interference and influence on the accuracy of detecting the touch position. Meanwhile, in order to avoid interference of the signal transmitted by the second sub-signal line 42 on the touch driving signal of the first sub-signal line 41 in the touch phase, the control chip 6 sends a high-impedance signal to the second sub-signal line 42, where the high-impedance signal specifically refers to a signal with a very small voltage and almost no voltage when the analog resistance is very large, and it can be understood that the second sub-signal line 42 does not transmit a voltage signal in the touch phase, so as to avoid interference on the touch driving signal of the first sub-signal line 41.
The second sub-signal lines 42 are electrically connected to the control chip 6 through the connection lines 43, so that the consistency of the reset voltage signals transmitted by the second sub-signal lines 42 can be ensured, and the uniformity of the display screen of the display panel can be improved.
In some alternative embodiments, the substrate 1 includes a plurality of metal layers disposed in a stack, and the reset signal line 4 and at least one of the metal layers are disposed in the same layer.
It can be understood that the metal layer may be a metal wiring layer such as a gate layer, a source drain layer, a capacitor layer, etc., and the reset signal line 4 may be disposed on the same layer as at least one of the metal layers to reduce the production cost, and of course, the reset signal line 4 may also be formed separately to avoid interference with other components.
In some alternative embodiments, the pixel circuit includes a driving thin film transistor T and a reset unit, the gate g of the driving thin film transistor T is formed by patterning a metal layer, the reset signal line 4 and the gate g of the driving thin film transistor T are disposed in the same layer, the reset unit includes a first reset unit electrically connected to the gate of the driving thin film transistor T, and each reset signal line 4 transmits a reset voltage signal to the gate g of the driving thin film transistor T through the first reset unit.
It should be noted that the reset signal line 4 and the gate g of the driving thin film transistor T are disposed on the same layer, specifically, the reset signal line 4 and the gate g may be formed by the same material and through the same process, so as to reduce the production cost. The reset signal line 4 and the gate g may also be formed by two processes using different materials to prevent the reset signal line 4 and the gate g from interfering with each other, and the reset signal line 4 transmits a reset voltage signal to the pixel circuit through a first reset unit, specifically, the first reset unit includes at least one thin film transistor.
Specifically, the pixel circuit includes a circuit including seven Thin Film transistors including a driving Transistor, a data writing Transistor, a compensation Transistor, a gate initialization Transistor, an anode reset Transistor, a power supply writing Transistor, and a light emission control Transistor, and a capacitor, that is, 7T 1C.
In some optional embodiments, the display panel further includes a light emitting device layer 2 disposed on one side of the substrate, the light emitting device layer 2 includes an anode 21, a light emitting layer 22, and a cathode 23 stacked in a film stacking direction of the display panel, the reset unit is electrically connected to the anode 21, the reset unit further includes a second reset unit electrically connected to the anode 21, and each reset signal line 4 transmits a reset voltage signal to the anode 21 through the second reset unit to reset the anode 21. Here, holes are injected into the anode 21, electrons are injected into the cathode 23, and excitons are formed when the holes and the electrons meet each other in the light-emitting layer 22, thereby emitting light. The light emitting layer 22 may emit red, green, and blue light, or may emit white light. It should be noted that the resetting of the gate g by the first reset unit and the resetting of the anode 23 by the second reset unit may be performed synchronously, i.e. by sending a reset voltage signal to the pixel circuit and the anode 21 connected to this pixel circuit via the same reset signal line 4, respectively
Referring to fig. 4 and fig. 5, an embodiment of the present invention further provides a display panel driving method, including:
s110: when the display panel is in a display stage, a reset voltage signal is sent to the pixel circuit through a reset signal line 4;
s120: when the display panel is in a touch stage, a touch driving signal is sent to each touch electrode block 3 through the reset signal line 4 and a touch sensing signal returned by the touch electrode block 3 is transmitted.
Specifically, the display panel operates according to the time sequence of the touch control stage and the display stage, and the display function and the touch control position detection function of the display panel are respectively realized through the reset signal line 4. In the touch position detection and display stage, a time-sharing driving mode is adopted, so that on one hand, the chips of the display driver and the touch driver can be integrated, and the production cost is further reduced; on the other hand, the time-sharing driving can also reduce the mutual interference between the display and the touch control, and improve the picture quality and the touch control accuracy.
Specifically, the time for displaying each frame on the touch panel is divided into a display stage and a touch stage, for example, the time for displaying one frame on the display panel in the signal timing diagram shown in fig. 5 is set to 12ms, and 6ms of the time is respectively selected as the display stage and the touch stage, although the time lengths of the two stages may also be appropriately adjusted according to the processing capability of the control chip 6, which is not specifically limited herein.
In some alternative embodiments, the reset voltage signal is a constant voltage; the touch driving signal is a rectangular pulse voltage. The amplitudes of the reset voltage signal and the touch driving signal and the actual voltage value need to be set according to actual requirements, which is not specifically limited herein.
The embodiment of the invention also provides a display device which comprises the display panel in any one of the embodiments.
The display device provided by the embodiment of the invention has the technical effects of the technical solutions of the display panel in any of the embodiments, and the explanations of the structures and terms identical to or corresponding to those in the embodiments are not repeated herein. The display device provided by the embodiment of the invention can be a wearable device, and can also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Claims (10)
1. A display panel, comprising:
a substrate including a plurality of reset signal lines and a plurality of pixel circuits;
the touch layer is arranged on one side of the substrate and comprises a plurality of touch electrode blocks, at least part of the reset signal lines are electrically connected with the touch electrode blocks respectively, and the reset signal lines are used for sending reset voltage signals to the pixel circuits in the display stage of the display panel and sending touch driving signals to the touch electrode blocks in the touch stage and transmitting touch induction signals returned by the touch electrode blocks.
2. The display panel according to claim 1, further comprising a control chip, wherein each of the reset signal lines is electrically connected to the control chip, and the control chip is configured to send the reset voltage signal and the touch driving signal to the reset signal lines in a time-sharing manner.
3. The display panel according to claim 2, wherein the reset signal line includes a plurality of first sub-signal lines extending in a first direction and a plurality of second sub-signal lines extending in a second direction, the first sub-signal lines are electrically connected to the touch electrode blocks in a one-to-one correspondence, the first sub-signal lines are electrically connected to the pixel circuits, the second sub-signal lines are electrically connected to the pixel circuits, the first sub-signal lines and the second sub-signal lines are insulated from each other, and the first direction intersects the second direction.
4. The display panel according to claim 3, wherein each of the first sub-signal lines is electrically connected to at least the pixel circuit covered by the orthographic projection of the correspondingly connected touch electrode block on the substrate through a via hole.
5. The display panel according to claim 3, wherein the first sub-signal lines are insulated from each other and electrically connected to the control chip, and the second sub-signal lines are electrically connected to the control chip through a connection line located in a non-display area of the display panel;
the control chip is used for sending a touch signal to the first sub-signal line and sending a high-resistance signal to the second sub-signal line in the touch control stage, and sending a reset voltage signal to the first sub-signal line and the second sub-signal line in the display stage.
6. The display panel according to claim 1, wherein the substrate includes a plurality of metal layers arranged in a stack, and the reset signal line and at least one of the metal layers are arranged in the same layer.
7. The display panel according to claim 6, wherein the pixel circuit includes a driving thin film transistor and a reset unit, a gate of the driving thin film transistor is formed by patterning the metal layer, each of the reset signal lines and the gate of the driving thin film transistor are disposed in the same layer, the reset unit includes a first reset unit electrically connected to the gate of the driving thin film transistor, and each of the reset signal lines transmits the reset voltage signal to the gate of the driving thin film transistor through the first reset unit in the display phase.
8. A display panel driving method, comprising:
when the display panel is in a display stage, sending a reset voltage signal to the pixel circuit through a reset signal line;
when the display panel is in a touch stage, a touch driving signal is sent to each touch electrode block through the reset signal line, and a touch sensing signal returned by the touch electrode block is transmitted.
9. The display panel driving method according to claim 8, wherein the reset voltage signal is a constant voltage; the touch driving signal is a rectangular pulse voltage.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023257A (en) * | 2021-11-12 | 2022-02-08 | 云谷（固安）科技有限公司 | Display panel, display panel driving method and display device |
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| CN114020168B (en) * | 2021-10-29 | 2024-01-23 | 云谷（固安）科技有限公司 | Touch panel, control method thereof and display device |
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