CN114023257B - 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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- CN114023257B CN114023257B CN202111342279.8A CN202111342279A CN114023257B CN 114023257 B CN114023257 B CN 114023257B CN 202111342279 A CN202111342279 A CN 202111342279A CN 114023257 B CN114023257 B CN 114023257B
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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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- 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
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
Abstract
The invention discloses a display panel, a display panel driving method and a display device, wherein the display panel comprises an array substrate; the first electrode layer is arranged on one side of the array substrate and comprises a first conductive structure and a second conductive structure which are arranged at the same interval, the first conductive structure is electrically connected with the pixel circuit, and the second conductive structure is used for receiving a first display signal and a touch signal in a time sharing way; the second electrode layer comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structures, and each second electrode block receives a first display signal through the second conductive structure in a display stage; in the touch stage, each second electrode block receives a touch signal through the second conductive structure to be multiplexed into a touch electrode block. The second electrode block is utilized to multiplex the touch electrode block and the second conductive structure of the first electrode layer to transmit signals to the second electrode block in a time-sharing way, so that the touch and display functions of the display panel are realized, and the demand of lightening and thinning of the display panel is met.
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
Among flat panel display technologies, an Organic Light-Emitting Diode (OLED) display has many advantages of Light and thin, active Light emission, fast response speed, large visual angle, wide color gamut, high brightness, low power consumption, etc., and gradually becomes a third generation display technology following a liquid crystal display. Compared to the LCD (Liquid crystal displays, liquid crystal display), the OLED has the advantages of more power saving, thinner, and wide viewing angle, which is incomparable with the LCD.
Touch technologies that are currently in common use include plug-in touch technologies and in-cell touch technologies. In-cell touch technology is to integrate a touch sensor into a display panel, so in-cell touch technology is more focused on OLED display devices. However, both the external touch technology and the embedded touch technology increase the thickness of the display panel, which affects the light and thin performance of the display panel.
Accordingly, 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, wherein a second electrode block is multiplexed into a touch electrode block, and a second conductive structure of a first electrode layer is used for transmitting signals to the second electrode block in a time-sharing manner, so that the touch and display functions of the display panel are realized, a touch film layer is not required to be additionally arranged, the thickness of the display panel is effectively reduced, and the demand of lightening and thinning the display panel is met.
In one aspect, an embodiment of the present invention provides a display panel, including: the array substrate comprises a substrate and a plurality of pixel circuits arranged on one side of the substrate; the first electrode layer is arranged on one side of the array substrate and comprises a first conductive structure and a second conductive structure which are arranged at intervals, the first conductive structure is electrically connected with the pixel circuit, and the second conductive structure is used for receiving a first display signal and a touch signal in a time sharing manner; the second electrode layer is arranged on one side, away from the substrate, of the first electrode layer, the second electrode layer comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structures, and in a display stage, each second electrode block receives the first display signals through the second conductive structures; in the touch stage, each second electrode block receives the touch signal through the second conductive structure to be multiplexed into a touch electrode block.
According to one aspect of the present invention, the second conductive structure includes a signal line and a connection part connected to each other, the connection part and the second electrode block are electrically connected, and the second electrode block receives the first display signal and the touch signal through the signal line.
According to one aspect of the invention, the display panel comprises a binding area located in a non-display area, the second conductive structures are connected with the second electrode blocks in a one-to-one correspondence manner, the second conductive structures comprise second first conductive structures connected with the second electrode blocks close to the binding area and second conductive structures connected with the second electrode blocks far away from the binding area, and the wiring width of signal wires of the second first conductive structures is smaller than or equal to that of signal wires of the second conductive structures.
According to one aspect of the present invention, the pixel defining layer is disposed on a side of the first electrode layer facing away from the array substrate, the pixel defining layer includes a plurality of pixel openings, at least a portion of the first conductive structures are exposed by the pixel openings, and the second conductive structures and the second electrode block are connected through vias disposed on the pixel defining layer; the display panel comprises a plurality of sub-pixels, and the orthographic projection of the second conductive structure on the substrate and the orthographic projection of the sub-pixels on the substrate are staggered in the direction perpendicular to the plane of the substrate.
According to one aspect of the invention, the display panel comprises a display area and a non-display area, wherein the non-display area comprises an adjacent partition area, a bending area and a binding area; the array substrate further comprises a first conductive part and a second conductive part, wherein the first conductive part and the second conductive part are arranged in the same layer, the first conductive part is arranged in the display area, the second conductive part is at least partially arranged in the bending area, the first conductive part is respectively connected with the pixel circuit and the first conductive structure, and the second conductive part is respectively connected with the second conductive structure; the second conductive lines are respectively connected with the signal lines; the second conductive part is connected with the signal line positioned in the partition area and the signal line positioned in the binding area through a via hole respectively, and the signal line positioned in the binding area extends to the binding area; the second conductive portion located in the partition area is connected to the signal line located in the partition area, and the second conductive portion located in the partition area extends to the bonding area.
According to an aspect of the present invention, the partition region includes a first partition portion and a second partition portion, the second partition portion is provided close to the bending region with respect to the first partition portion, and the signal line is located between a side of at least one of the first partition portion and the second partition portion close to the substrate and the substrate in a direction perpendicular to the substrate; the first partition part and the second partition part respectively comprise at least two insulating layers which are stacked, and the signal line is at least partially positioned between one insulating layer of at least one of the first partition part and the second partition part, which is close to one side of the substrate, and the substrate; the insulating layer materials of the first partition part and the second partition part are the same as the material of at least one insulating layer of the display area; the insulating layer of at least one of the first and second partitions includes a pixel defining material layer therein, the pixel defining material layer and the pixel defining layer being the same material.
According to one aspect of the invention, the partition area comprises a first partition portion and a second partition portion, the second partition portion is arranged close to the bending area relative to the first partition portion, the first partition portion and the second partition portion respectively comprise at least two insulating layers which are arranged in a stacked manner along the direction perpendicular to the substrate, and the signal line is at least partially positioned on one side surface of at least one insulating layer of the first partition portion and the second partition portion, which is away from the substrate; or, in a direction perpendicular to the substrate, the first partition portion and the second partition portion respectively comprise at least two insulating layers which are stacked, at least part of the signal line is positioned between one side, close to the substrate, of one insulating layer of one of the first partition portion and the second partition portion, close to the substrate, and at least part of the signal line is positioned on one side surface, away from the substrate, of the at least one insulating layer of the other one of the first partition portion and the second partition portion; the insulating layer materials of the first partition part and the second partition part are the same as the material of at least one insulating layer of the display area; the insulating layer of at least one of the first and second partitions includes a pixel defining material layer therein, the pixel defining material layer and the pixel defining layer being the same material.
Another aspect of the embodiments of the present invention provides a display panel driving method, including: in the display stage, the second electrode block receives a first display signal through the second conductive structure, and the first conductive structure receives a second display signal through the pixel circuit; in the touch stage, the second electrode block receives a touch signal through the second conductive structure.
According to another aspect of the invention, the first display signal and the second display signal are both constant voltages, and a voltage difference exists between the first display signal and the second display signal, and the touch signal is rectangular pulse voltage; in the display stage, a display control switch is turned on, a first conductive structure receives a second display signal through the pixel circuit, and a second electrode block receives the first display signal through the second conductive structure; in the touch control stage, the display control switch is turned off, the first conductive structure stops receiving the second display signal, and the second electrode block receives the touch control signal through the second conductive structure;
in still another aspect, a display device according to an embodiment of the present invention includes: a display panel, wherein the display panel is any one of the display panels described in the above embodiments; and the control chip is electrically connected with the display panel.
Compared with the prior art, the display panel provided by the embodiment of the invention comprises the array substrate, the first electrode layer and the second electrode layer, wherein the first electrode layer comprises a first conductive structure and a second conductive structure which are mutually insulated, and in a display stage, the first conductive structure receives an electric signal of a pixel circuit, and meanwhile, the second electrode block can also receive a first display signal through the second conductive structure so as to realize the display function of the display panel; in the touch stage, each second electrode block receives a touch signal through the second conductive structure, so that the second electrode blocks are multiplexed into touch electrode blocks, namely, the second electrode blocks have a touch function. Meanwhile, the second electrode block is utilized to multiplex the second conductive structure of the touch electrode block and the first electrode layer to transmit signals to the second electrode block in a time-sharing way, so that the touch and display functions of the display panel are realized, a touch film layer is not required to be additionally arranged, the thickness of the display panel is effectively reduced, and the light and thin requirement of the display panel is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a film layer at A-A of FIG. 1;
fig. 3 is a schematic structural diagram of a first electrode layer according to an embodiment of the present invention;
FIG. 4 is a partial enlarged view at D in FIG. 3; FIG. 5 is a schematic illustration of a film at B-B in FIG. 1;
FIG. 6 is a schematic view of another membrane layer at B-B in FIG. 1;
FIG. 7 is a schematic view of yet another membrane layer at B-B in FIG. 1;
FIG. 8 is a schematic view of a film layer at C-C in FIG. 1;
FIG. 9 is another film schematic at C-C of FIG. 1;
fig. 10 is a flowchart of a method for driving a display panel according to an embodiment of the present invention.
In the accompanying drawings:
1-an array substrate; 11-a substrate; 12-a second insulating layer; 13-a third insulating layer; 14-a fourth insulating layer; 15-a first insulating layer; 16-a fifth insulating layer; 2-a first electrode layer; 21-a first conductive structure; 22-a second conductive structure; 221-a first line segment; 222-a second line segment; 223-third line segment; 3-a second electrode block; a 4-pixel definition layer; 41-a layer of pixel defining material; 5-a first conductive portion; 6-packaging layer; 61-a first inorganic encapsulation layer; 62-an organic encapsulation layer; 63-a second inorganic encapsulation layer; 7-supporting columns; 8-a second conductive portion; PS 1-a first partition; PS 2-second partition; an IC-control chip; an AA-display area; NA-non-display area; NA 1-blocking region; NA 2-inflection region; NA 3-binding domain.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent 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 invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 like elements in a process, method, article or apparatus that comprises the element.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims (the claims) and their equivalents. The embodiments provided by the embodiments of the present invention may be combined with each other without contradiction.
Embodiments of the present invention provide a display panel and a display device, and embodiments of the display panel and the display device will be described below with reference to fig. 1 to 10.
Referring to fig. 1 to 4, an embodiment of the present invention provides a display panel, including: an array substrate 1 including a substrate 11 and a plurality of pixel circuits provided on one side of the substrate 11; the first electrode layer 2 is arranged on one side of the array substrate 1 and comprises a first conductive structure 21 and a second conductive structure 22 which are arranged at intervals, the first conductive structure 21 is electrically connected with the pixel circuit, and the second conductive structure 22 is used for receiving a first display signal and a touch signal in a time sharing manner; the second electrode layer is arranged on one side, away from the substrate 11, of the first electrode layer 2, and comprises a plurality of second electrode blocks 3, the second electrode blocks 3 are electrically connected with the second conductive structures 22, and in the display stage, each second electrode block 3 receives a first display signal through the second conductive structure 22; in the touch stage, each second electrode block 3 receives a touch signal through the second conductive structure 22 to be multiplexed into a touch electrode block.
The display panel provided by the embodiment of the invention comprises an array substrate 1, a first electrode layer 2 and a second electrode layer, wherein the first electrode layer 2 comprises a first conductive structure 21 and a second conductive structure 22 which are mutually insulated, and in a display stage, the first conductive structure 21 receives an electric signal of a pixel circuit, and meanwhile, the second electrode block 3 can also receive a first display signal through the second conductive structure 22 so as to realize the display function of the display panel; in the touch stage, each second electrode block 3 receives a touch signal through the second conductive structure 22, so that the second electrode blocks 3 are multiplexed into a touch electrode block, that is, the second electrode block 3 has a touch function, and the display panel provided by the embodiment of the invention uses the second conductive structure 22 of the first electrode layer 2 to transmit the first display signal and the touch signal to the second electrode block 3 in a time sharing manner, and the second conductive structure 22 and the first conductive structure 21 are mutually insulated, so that signal interference between the two is effectively avoided. Meanwhile, the second electrode block 3 is utilized to multiplex the touch electrode block and the second conductive structure 22 of the first electrode layer 2 to transmit signals to the second electrode block 3 in a time-sharing manner, so that the touch and display functions of the display panel are realized, a touch film layer is not required to be additionally arranged, the thickness of the display panel is effectively reduced, and the light and thin requirement of the display panel is met.
Optionally, a light emitting layer is disposed between the first conductive structure 21 and the second electrode block 3, and in the display stage, the electrical signal of the pixel circuit received by the first conductive structure 21 may be a VDD positive polarity voltage signal, and at the same time, the first display signal received by the second electrode block 3 from the second conductive structure 22 may be a VSS negative polarity voltage, so that a voltage difference is formed between the first conductive structure 21 and the second electrode block 3, and the light emitting layer is driven to emit light. In the touch stage, the pixel circuit does not work, that is, the pixel circuit does not send a VDD positive voltage signal to the first conductive structure 21, and sends a touch signal to the second electrode block 3 through the second conductive structure 22, so that the second electrode block 3 is multiplexed into a touch electrode block for detecting the touch state of an object such as a finger.
Optionally, the pixel circuit includes a plurality of thin film transistors, each of which includes a source, a drain, a gate, an active layer, and the like, and the first conductive structure 21 is electrically connected to the source or the drain of the thin film transistor. The second electrode layer is covered with an encapsulation layer 6 on a side away from the substrate 11, and the encapsulation layer 6 may specifically include a first inorganic encapsulation layer 61, an organic encapsulation layer 62 and a second inorganic encapsulation layer 63, where the encapsulation layer 6 is provided to block external water and oxygen from entering, and improve the flatness of the display panel film layer.
It should be noted that, in order to ensure the accuracy of detecting the touch position of the second electrode block 3, the second conductive structures 22 are connected with the second electrode block 3 in a one-to-one correspondence manner or the plurality of second conductive structures 22 are connected with one second electrode block 3, so as to ensure that the fed-back signals will not interfere with each other when each second electrode block 3 is respectively touched, and thus, the situation that one second conductive structure 22 corresponds to the plurality of second electrode blocks 3 is avoided.
To achieve time-sharing of the transmission of the first display signal and the touch signal to the second electrode block 3, in some alternative embodiments the second conductive structure 22 comprises a signal line and a connection part connected, the connection part being electrically connected to the second electrode block 3, the second electrode block 3 receiving the first display signal and the touch signal via the signal line.
Specifically, some other film layers, such as an inorganic insulating layer, a pixel definition layer 4, and the like, exist between the signal line and the second electrode block 3, and when other film layers exist between the signal line and the second electrode block 3, through holes may be provided in the other film layers, and the connection portion and the second electrode block 3 are connected through the through holes, so as to realize signal transmission. In order to improve uniformity of the received touch signal of each second electrode layer during touch, in some alternative embodiments, the display panel includes a bonding area NA3 located in the non-display area NA, the second conductive structures 22 are connected to the second electrode blocks 3 in a one-to-one correspondence manner, and the second conductive structures 22 include a second first conductive structure connected to the second electrode block 3 near the bonding area NA3 and a second conductive structure connected to the second electrode block 3 far from the bonding area NA3, and a routing width of a signal line of the second first conductive structure is smaller than or equal to a routing width of a signal line of the second conductive structure.
It should be noted that the second conductive structures 22 are connected to the second electrode blocks 3 in a one-to-one correspondence manner, and the second electrode blocks 3 are mutually insulated, so as to improve accuracy of detecting the touch position. In this embodiment, the second electrode block 3 connected to the second first conductive structure is closer to the bonding area NA3, so that the trace length of the second first conductive structure is relatively shorter, and the second electrode block 3 connected to the second conductive structure is relatively farther from the bonding area NA3, so that the trace length of the second conductive structure is relatively longer. In this embodiment, by setting the routing width of the signal line of the second first conductive structure to be less than or equal to the routing width of the signal line of the second conductive structure, when the routing width of the signal line of the second first conductive structure is set to be less than the routing width of the signal line of the second conductive structure, the problem of impedance difference caused by the difference in routing lengths of the second first conductive structure and the second conductive structure can be balanced, thereby reducing the pressure difference between the second electrode block 3 near one end of the bonding area NA3 and the second electrode block 3 far from one end of the bonding area NA3, and improving the uniformity of the received touch signal of each second electrode layer during touch. And when the wiring width of the signal wire of the second first conductive structure is set to be equal to that of the signal wire of the second conductive structure, the manufacturing difficulty can be reduced, and the production cost is reduced. Of course, the impedance difference may be balanced in other forms, for example, by providing a slot on the signal line of the second first conductive structure or the signal line of the second conductive structure to adjust the impedance of the signal line of the second first conductive structure or the signal line of the second conductive structure.
Referring to fig. 2, in some alternative embodiments, the pixel defining layer 4 further includes a pixel defining layer 4, where the pixel defining layer 4 is disposed on a side of the first electrode layer 2 facing away from the array substrate 1, and the pixel defining layer 4 includes a plurality of pixel openings, where the pixel openings expose at least a portion of the first conductive structures 21, and the second conductive structures 22 and the second electrode blocks 3 are connected through vias disposed on the pixel defining layer 4.
Specifically, a via hole is disposed on the pixel defining layer 4, and the second conductive structure 22 may extend into the via hole and be electrically connected to the second electrode block 3 located on the other side of the pixel defining layer 4, where the pixel defining layer 4 may be specifically made of an organic adhesive, a resin, or other materials.
Optionally, the display panel comprises a plurality of sub-pixels, and the front projection of the second conductive structure 22 on the substrate 11 and the front projection of the sub-pixels on the substrate 11 are staggered in a direction perpendicular to the plane of the substrate 11. Specifically, in a direction perpendicular to the plane of the substrate 11, the orthographic projection of the second conductive structure 22 on the substrate 11 may fall between orthographic projections of the sub-pixels on the substrate 11, so as to avoid adverse effects of the second conductive structure 22 on the light emission of the sub-pixels. The sub-pixels may be formed of an anode, a light emitting layer, and a cathode to realize light emitting display of the display panel.
Referring to fig. 1, 8 and 9, in some alternative embodiments, the display panel includes a display area AA and a non-display area NA, wherein the non-display area NA includes an adjacent partition area NA1, a bending area NA2 and a binding area NA3; the array substrate 1 further includes a first conductive portion 5 and a second conductive portion 8, the first conductive portion 5 and the second conductive portion 8 are disposed on the same layer, the first conductive portion 5 is disposed in the display area AA, the second conductive portion 8 is at least partially disposed in the bending area NA2, the first conductive portion 5 is electrically connected to the pixel circuit and the first conductive structure 21, respectively, and the second conductive portion 8 is electrically connected to the second conductive structure 22, respectively. Optionally, the second conductive portions 8 are respectively connected to signal lines; specifically, the second conductive portion 8 connects the signal line located in the partition area NA1 and the signal line located in the binding area NA3 through the via hole, respectively;
alternatively, the second conductive part 8 located at the partition area NA1 is connected to the signal line located at the partition area NA1, and the second conductive part 8 located at the partition area NA1 extends to the bonding area NA3.
It should be noted that, since the bending area NA2 of the display panel needs to be bent, the second conductive structure 22 is generally made of a composite material of ITO (Indium tin oxide) -Ag (silver) -ITO, which is prone to problems such as wrinkling, cracking or breaking during bending. Optionally, the non-display area NA further includes a binding area NA3, the binding area NA3 is disposed on a side of the bending area NA2 away from the display area AA, the second conductive portion 8 is generally made of a material of Ti (titanium) -Al (aluminum) -Ti, the bending performance of the second conductive portion is relatively good, the second conductive portion 8 located in the partition area NA1 extends to the binding area NA3, that is, the second conductive portion 8 located in the partition area NA1 extends to the binding area NA3 through the bending area NA2, the service life of the display panel is improved, and the problems that a fold, a crack or a fracture occurs easily in a film layer of the bending area NA2 of the display panel during bending are avoided.
In some alternative embodiments, the partition area NA1 includes a first partition PS1 and a second partition PS2, and the second partition PS2 is disposed near the bending area NA2 with respect to the first partition PS1, and the signal line is located between the substrate 11 and at least one of the first partition PS1 and the second partition PS2 near the substrate 11 in a direction perpendicular to the substrate 11.
The first partition portion PS1 and the second partition portion PS2 may be formed of a single insulating layer, for example, a material such as silicon nitride or silicon oxide, or a material such as an organic adhesive, and the gradient of the signal line climbing can be effectively reduced by disposing the signal line between the substrate 11 and at least one of the first partition portion PS1 and the second partition portion PS2, which is close to the substrate 11, so that the problems of disconnection and etching residue of the signal line can be avoided.
In some alternative embodiments, the first partition PS1 and the second partition PS2 each include at least two insulating layers stacked in a direction perpendicular to the substrate 11, and the signal line is at least partially located between a side of one insulating layer of at least one of the first partition PS1 and the second partition PS2, which is adjacent to the substrate 11, and the substrate 11.
Referring to fig. 5, when the signal line is at least partially located between a side of the insulating layer of the first partition PS1 and the second partition PS2, which is close to the substrate 11, and the substrate 11, the insulating layers of the first partition PS1 and the second partition PS2 each include a pixel defining material layer 41 and a support column 7 that are stacked in a direction perpendicular to the substrate 11; the signal line includes a first line segment 221, a second line segment 222 and a third line segment 223, where the first line segment 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second line segment 222 is disposed between the first partition PS1 and the substrate 11, one end of the second line segment 222 is connected to the first line segment 221, the other end is connected to the third line segment 223, and the third line segment 223 is disposed between the substrate 11 and the pixel defining material layer 41 of the second partition PS 2.
In the present embodiment, the first line segment 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition portion PS1, the second line segment 222 is disposed between the first partition portion PS1 and the substrate 11, and the third line segment 223 is disposed between the substrate 11 and the pixel defining material layer 41 of the second partition portion PS2, that is, no step is formed between the first line segment 221, the second line segment 222 and the third line segment 223, so that the signal line is effectively prevented from climbing in the first partition portion PS1 and the second partition portion PS2, and the risk of line breakage and etching residue of the signal line in the partition area NA1 is reduced.
In some alternative embodiments, the first partition PS1 and the second partition PS2 each include at least two insulating layers stacked in a direction perpendicular to the substrate 11, and the signal line is at least partially located on a side surface of at least one insulating layer of at least one of the first partition PS1 and the second partition PS2 facing away from the substrate 11.
Referring to fig. 6, when the signal line is at least partially located on a side surface of the first partition PS1 and the second partition PS2 facing away from the substrate 11, the specific embodiment is as follows, where the first partition PS1 and the second partition PS2 each include two insulating layers, the two insulating layers include a first insulating layer 15 close to the substrate and a fifth insulating layer 16 far away from the substrate, and the two insulating layers in the partition may be specifically disposed on the same layer as the first insulating layer 15 and the fifth insulating layer 16 located in the display area, and may be formed by the same process, i.e., the two insulating layers of the first partition PS1 and the second partition PS2 are respectively made of the same material as the first insulating layer 15 and the fifth insulating layer 16 of the array substrate 1.
It should be noted that, the material of the insulating layer of the first partition portion PS1 and the insulating layer of the second partition portion PS2 are the same as the material of at least one insulating layer of the display area AA, that is, the material of the insulating layer of the first partition portion PS1 and the insulating layer of the second partition portion PS2 may be formed by the same process and the same material as the insulating layer of the display area AA, and may be disposed in the same layer, so as to simplify the process and reduce the production cost. Specifically, the pixel defining material layer 41 and the pixel defining layer 4 of the display area AA are made of the same material, and the pixel defining material layer 41 and the pixel defining layer 4 of the display area AA are formed by the same process and the same material, and the pixel defining material layer 41 and the pixel defining layer 4 may be disposed in the same layer. The support columns 7 are also arranged in the display area AA, the support columns 7 of the partition area NA1 and the support columns 7 of the display area AA are made of the same material, and the support columns 7 of the partition area NA1 and the support columns 7 of the display area AA are formed by the same process and the same material.
Optionally, the insulating layer of the second partition PS2 further includes a layer of pixel defining material 41, the pixel defining material 41 is disposed on a side of the fifth insulating layer 16 of the second partition PS2 facing away from the substrate 11, and a portion of the signal line is disposed between the fifth insulating layer 16 of the second partition PS2 and the pixel defining material 41.
In some alternative embodiments, the first partition PS1 and the second partition PS2 include at least two insulating layers disposed in a stacked manner in a direction perpendicular to the substrate 11, at least a part of the signal lines are located between a side of one insulating layer of one of the first partition PS1 and the second partition PS2, which is close to the substrate 11, and at least a part of the signal lines are located on a side surface of the other insulating layer of the other one of the first partition PS1 and the second partition PS2, which is away from the substrate 11.
Referring to fig. 7, an alternative embodiment is as follows, in a direction perpendicular to the substrate 11, the insulating layer of the first partition PS1 includes a pixel defining material layer 41 and a support column 7 that are stacked, and the second partition PS2 includes the first insulating layer 15, the pixel defining material layer 41 and the support column 7 that are stacked; the signal line includes a first line segment 221, a second line segment 222 and a third line segment 223, where the first line segment 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second line segment 222 is disposed between the first partition PS1 and the substrate 11, one end of the second line segment 222 is connected to the first line segment 221, the other end is connected to the third line segment 223, and the third line segment 223 is disposed between the first insulating layer 15 of the second partition PS2 and the pixel defining material layer 41.
In the present embodiment, the first line segment 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second line segment 222 is disposed on the substrate 11 side between the first partition PS1 and the second partition PS2, and the first line segment 221 and the second line segment 222 are located at the same height, and no step is formed between the first line segment 221 and the second line segment 222, so that the first line segment 221 and the second line segment 222 will not generate problems such as line break and etching residue due to step during the formation of the first line segment 221 and the second line segment 222. The third line segment 223 formed by extending the second line segment 222 towards the second partition portion PS2 is disposed between the first insulating layer 15 and the pixel defining material layer 41 of the second partition portion PS2, and the step difference between the second line segment 222 and the third line segment 223, that is, the thickness of the first insulating layer 15, is relatively smaller, the gradient of the signal line climbing is smaller, and the risk of line breakage and etching residues of the signal line is effectively reduced.
Referring to fig. 10, an embodiment of the present invention further provides a driving method of a display panel, including:
s110: in the display phase, the second electrode block 3 receives the first display signal through the second conductive structure 22, and the first conductive structure 21 receives the second display signal through the pixel circuit;
s120: in the touch stage, the second electrode block 3 receives a touch signal through the second conductive structure 22.
In the display panel driving method provided by the embodiment of the invention, in the display stage, the first conductive structure 21 receives the second display signal of the pixel circuit, and meanwhile, the second electrode block 3 can also receive the first display signal through the second conductive structure 22 so as to realize the display function of the display panel; in the touch stage, the second electrode block 3 receives a touch signal through the second conductive structure 22, so that the second electrode block 3 is multiplexed into a touch electrode block, that is, the second electrode block 3 has a touch function, and in the display panel driving method provided by the embodiment of the invention, signals are transmitted to the second electrode block 3 in a time-sharing manner by using the second conductive structure 22 in the display stage and the touch stage respectively, so that the touch and display functions of the display panel are realized.
Optionally, the first display signal and the second display signal are both constant voltages, and a voltage difference is provided between the first display signal and the second display signal, and the touch signal is rectangular pulse voltage. Specifically, the first display signal is a VSS negative polarity voltage signal, and the second display signal is a VDD positive polarity voltage signal.
Optionally, in the display stage, the display control switch is turned on, the first conductive structure 21 receives the second display signal through the pixel circuit, and the second electrode block 3 receives the first display signal through the second conductive structure 22; in the touch stage, the display control switch is turned off, the first conductive structure 21 stops receiving the second display signal, and the second electrode block 3 receives the touch signal through the second conductive structure 22.
The embodiment of the invention also provides a display device, which comprises the display panel and the control chip IC in any embodiment, wherein the control chip IC is electrically connected with the display panel, and the control chip IC is used for sending a first display signal and a touch signal to a signal wire of the display panel in a time sharing way.
Therefore, the display panel provided in the embodiment of the present invention has the technical effects of the technical solution of the display panel in any of the above embodiments, and the same or corresponding structures and explanations of terms as those of the above embodiments are not repeated herein. The display panel provided by the embodiment of the invention can be a mobile phone or any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interactive terminal, etc., which are not particularly limited in this embodiment of the invention.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, 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, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this disclosure 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, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Claims (20)
1. A display panel, comprising:
the array substrate comprises a substrate and a plurality of pixel circuits arranged on one side of the substrate;
the first electrode layer is arranged on one side of the array substrate and comprises a first conductive structure and a second conductive structure which are arranged at intervals and mutually insulated, the first conductive structure is electrically connected with the pixel circuit, and the second conductive structure is used for receiving a first display signal and a touch signal in a time-sharing manner;
the second electrode layer is arranged on one side, away from the substrate, of the first electrode layer, the second electrode layer comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structures, and in a display stage, each second electrode block receives the first display signals through the second conductive structures; in the touch stage, each second electrode block receives the touch signal through the second conductive structure to be multiplexed into a touch electrode block.
2. The display panel of claim 1, wherein the second conductive structure includes a signal line and a connection portion connected to each other, the connection portion and the second electrode block being electrically connected, the second electrode block receiving the first display signal and the touch signal through the signal line.
3. The display panel of claim 2, wherein the display panel includes a bonding region located in a non-display region, the second conductive structures are connected to the second electrode blocks in a one-to-one correspondence, and the second conductive structures include a second first conductive structure connected to the second electrode block near the bonding region and a second conductive structure connected to the second electrode block far from the bonding region, and a trace width of a signal line of the second first conductive structure is smaller than or equal to a trace width of a signal line of the second conductive structure.
4. The display panel of claim 2, further comprising a pixel definition layer disposed on a side of the first electrode layer facing away from the array substrate, the pixel definition layer including a plurality of pixel openings exposing at least a portion of the first conductive structures, the second conductive structures and the second electrode block being connected by vias disposed on the pixel definition layer.
5. The display panel of claim 1, wherein the display panel comprises a plurality of sub-pixels, and wherein an orthographic projection of the second conductive structure on the substrate and an orthographic projection of the sub-pixels on the substrate are staggered in a direction perpendicular to a plane in which the substrate is located.
6. The display panel of claim 4, wherein the display panel comprises a display region and a non-display region, the non-display region comprising adjacent partition regions, inflection regions, and binding regions;
the array substrate further comprises a first conductive part and a second conductive part, the first conductive part and the second conductive part are arranged on the same layer, the first conductive part is arranged in the display area, the second conductive part is at least partially arranged in the bending area, the first conductive part is respectively connected with the pixel circuit and the first conductive structure, and the second conductive part is respectively connected with the second conductive structure.
7. The display panel according to claim 6, wherein the second conductive lines are connected to the signal lines, respectively.
8. The display panel according to claim 6, wherein the second conductive portion connects the signal line located in the partition region and the signal line located in the bonding region, respectively, through a via hole, the signal line located in the bonding region extending to the bonding region.
9. The display panel of claim 6, wherein the second conductive portion at the partition area is connected to the signal line at the partition area, and the second conductive portion at the partition area extends to the bonding area.
10. The display panel according to claim 6, wherein the partition region includes a first partition portion and a second partition portion, the second partition portion is provided near the bending region with respect to the first partition portion, and the signal line is located between a side of at least one of the first partition portion and the second partition portion near the substrate and the substrate in a direction perpendicular to the substrate.
11. The display panel according to claim 10, wherein the first partition portion and the second partition portion each include at least two insulating layers stacked, and the signal line is at least partially located between one insulating layer of at least one of the first partition portion and the second partition portion, which is closer to the substrate, and the substrate.
12. The display panel according to claim 10, wherein an insulating layer material of the first and second partitions and at least one insulating layer of the display area are the same.
13. The display panel according to claim 10, wherein an insulating layer of at least one of the first and second partitions includes a pixel defining material layer, and wherein materials of the pixel defining material layer and the pixel defining layer are the same.
14. The display panel according to claim 6, wherein the partition region includes a first partition portion and a second partition portion, the second partition portion is provided near the bending region with respect to the first partition portion, the first partition portion and the second partition portion each include at least two insulating layers provided in a stacked manner in a direction perpendicular to the substrate, and the signal line is at least partially located on a side surface of at least one of the first partition portion and the second partition portion, the at least one insulating layer facing away from the substrate;
or in the direction perpendicular to the substrate, the first partition part and the second partition part respectively comprise at least two insulating layers which are arranged in a stacked mode, at least part of the signal wire is positioned between one side, close to the substrate, of one insulating layer of one of the first partition part and the second partition part, close to the substrate, and one side surface, away from the substrate, of the at least one insulating layer of the other one of the first partition part and the second partition part.
15. The display panel of claim 14, wherein the insulating layer material of the first and second partitions is the same as the material of at least one insulating layer of the display area.
16. The display panel according to claim 14, wherein an insulating layer of at least one of the first and second partitions includes a pixel defining material layer, and wherein materials of the pixel defining material layer and the pixel defining layer are the same.
17. A display panel driving method applied to the display panel according to any one of claims 1 to 16, comprising:
in the display stage, the second electrode block receives a first display signal through the second conductive structure, and the first conductive structure receives a second display signal through the pixel circuit;
in the touch stage, the second electrode block receives a touch signal through the second conductive structure.
18. The method of claim 17, wherein the first display signal and the second display signal are both constant voltages with a voltage difference therebetween, and the touch signal is a rectangular pulse voltage.
19. The display panel driving method according to claim 18, wherein in a display stage, a display control switch is turned on, a first conductive structure receives a second display signal through the pixel circuit, and a second electrode block receives a first display signal through the second conductive structure;
in the touch control stage, the display control switch is turned off, the first conductive structure stops receiving the second display signal, and the second electrode block receives the touch control signal through the second conductive structure.
20. A display device, comprising:
a display panel according to any one of claims 1 to 16;
and the control chip is electrically connected with the display panel.
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