CN114023257A - 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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- CN114023257A CN114023257A CN202111342279.8A CN202111342279A CN114023257A CN 114023257 A CN114023257 A CN 114023257A CN 202111342279 A CN202111342279 A CN 202111342279A CN 114023257 A CN114023257 A CN 114023257A
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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
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- Human Computer Interaction (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
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 intervals on the same layer, 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 comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structure, and in the display stage, each second electrode block receives a first display signal through the second conductive structure; in the touch control stage, each second electrode block receives a touch control signal through the second conductive structure to be multiplexed as a touch control electrode block. The second electrode block is used for multiplexing as a touch electrode block and a second conductive structure of the first electrode layer to transmit signals to the second electrode block in a time-sharing mode, so that the touch and display functions of the display panel are achieved, and the requirement of lightness and thinness 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
In the flat panel display technology, an Organic Light-Emitting Diode (OLED) display has many advantages of being Light and thin, Emitting Light actively, fast in response speed, large in visible angle, wide in color gamut, high in brightness, low in power consumption, and the like, and is gradually becoming a third generation display technology following the liquid crystal display. Compared with an LCD (Liquid crystal display), the OLED has the advantages of power saving, thinness and wide viewing angle, which is incomparable with the LCD.
Currently, the commonly used touch technologies include an external touch technology and an embedded touch technology. In-cell touch technology refers to the integration of touch sensors into a display panel, and thus 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 lightness and thinness of the display panel.
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, wherein a second electrode block is reused as a touch electrode block and a second conductive structure of a first electrode layer transmits signals to the second electrode block in a time-sharing mode, 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 requirement of the display panel for lightness and thinness is met.
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 first conductive structures and second conductive structures which are arranged at intervals, the first conductive structures are electrically connected with the pixel circuit, and the second conductive structures are used for receiving a first display signal and a touch signal in a time-sharing mode; the second electrode layer is arranged on one side, away from the substrate, of the first electrode layer and comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structures, and in a display stage, the second electrode blocks receive the first display signals through the second conductive structures; in the touch control stage, each second electrode block receives the touch control signal through the second conductive structure to be multiplexed into a touch control electrode block.
According to an aspect of the present invention, the second conductive structure includes a signal line and a connection portion connected to each other, the connection portion is electrically connected to the second electrode block, and the second electrode block receives the first display signal and the touch signal through the signal line.
According to an aspect of the invention, the display panel includes a bonding area located in a non-display area, the second conductive structures are connected to the second electrode blocks in a one-to-one correspondence, the second conductive structures include second conductive structures connected to the second electrode blocks close to the bonding area and second conductive structures connected to the second electrode blocks far away from the bonding area, and a routing width of signal lines of the second conductive structures is smaller than or equal to a routing width of signal lines of the second conductive structures.
According to one aspect of the invention, the liquid crystal display further comprises a pixel defining layer, the pixel defining layer is arranged on one side, away from the array substrate, of the first electrode layer, the pixel defining layer comprises a plurality of pixel openings, at least part of the first conductive structures are exposed through the pixel openings, and the second conductive structures and the second electrode blocks are connected through via holes arranged in the pixel defining layer; the display panel comprises a plurality of sub-pixels, and in the direction perpendicular to the plane of the substrate, the orthographic projection of the second conductive structure on the substrate and the orthographic projection of the sub-pixels on the substrate are arranged in a staggered mode.
According to one aspect of the present invention, the display panel includes a display area and a non-display area, the non-display area includes 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, 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, at least part of the second conductive part is 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 parts 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 via holes respectively, and the signal line positioned in the binding area extends to the binding area; the second conductive part located in the partition area is connected with the signal line located in the partition area, and the second conductive part located in the partition area extends to the binding area.
According to one aspect of the invention, the partition region includes a first partition portion and a second partition portion, the second partition portion is disposed close to the bending region relative to the first partition portion, and the signal line is located between one 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 layers of insulation layers which are arranged in a stacked mode, and the signal line is at least partially located between one layer of insulation layer of one side, close to the substrate, of at least one of the first partition part and the second partition part and the substrate; the materials of the insulating layers 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 partition and the second partition includes a pixel defining material layer therein, and the pixel defining material layer are the same in material.
According to one aspect of the invention, the partition region includes a first partition portion and a second partition portion, the second partition portion is disposed close to the bending region relative to the first partition portion, in a direction perpendicular to the substrate, the first partition portion and the second partition portion respectively include at least two insulation layers which are stacked, and the signal line is at least partially disposed on a side surface of at least one insulation layer of at least one of the first partition portion and the second partition portion, which is away from the substrate; or, in the direction perpendicular to the substrate, the first partition and the second partition respectively include at least two stacked insulating layers, at least part of the signal line is located between one side, close to the substrate, of one insulating layer of one of the first partition and the second partition, the insulating layer of the side close to the substrate, and at least part of the signal line is located on one side surface, away from the substrate, of the at least one insulating layer of the other one of the first partition and the second partition; the materials of the insulating layers 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 partition and the second partition includes a pixel defining material layer therein, and the pixel defining material layer are the same in material.
Another aspect of an embodiment 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; and in the touch control stage, the second electrode block receives a touch control 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 a rectangular pulse voltage; in the display stage, the display control switch is switched on, the first conductive structure receives a second display signal through the pixel circuit, and the 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;
another aspect of an embodiment of the present invention provides a display device, including: a display panel according to any one of 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 an array substrate, a first electrode layer and a second electrode layer, wherein the first electrode layer comprises a first conductive structure and a second conductive structure which are insulated from each other; in the touch stage, each second electrode block receives a touch signal through the second conductive structure, so that the second electrode blocks are reused as the touch electrode blocks, that is, the second electrode blocks have a touch function. Meanwhile, the second electrode block is used for multiplexing as a touch electrode block and a second conductive structure of the first electrode layer to transmit signals to the second electrode block in a time-sharing mode, so that the touch and display functions of the display panel are achieved, a touch film layer does not need to be additionally arranged, the thickness of the display panel is effectively reduced, and the requirement of lightening and thinning 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 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 schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a film layer at A-A in FIG. 1;
fig. 3 is a schematic structural diagram of a first electrode layer provided in an embodiment of the invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at D; FIG. 5 is a schematic view of a film layer at B-B in FIG. 1;
FIG. 6 is a schematic view of another film layer at B-B in FIG. 1;
FIG. 7 is a schematic view of yet another film 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 a schematic view of another film layer at C-C in FIG. 1;
fig. 10 is a flowchart of a display panel driving method according to an embodiment of the invention.
In the 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 route segment; 222-a second route segment; 223-third route segment; 3-a second electrode block; 4-pixel definition layer; 41-a pixel defining material layer; 5-a first conductive portion; 6-packaging layer; 61-a first inorganic encapsulation layer; 62-organic encapsulation layer; 63-a second inorganic encapsulation layer; 7-a support column; 8-a second conductive portion; PS 1-first partition; PS 2-second partition; an IC-control chip; AA-display area; NA-non-display area; NA 1-exclusion zone; NA 2-inflection zone; NA 3-binding region.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting 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 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.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or 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. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention can be combined with each other without contradiction.
Embodiments of a display panel and a display device according to the present invention are described below with reference to fig. 1 to 10.
Referring to fig. 1 to 4, an embodiment of the invention provides a display panel, including: the array substrate 1 comprises a substrate 11 and a plurality of pixel circuits arranged on one side of the substrate 11; the first electrode layer 2 is arranged on one side of the array substrate 1 and comprises first conductive structures 21 and second conductive structures 22 which are arranged at intervals, the first conductive structures 21 are electrically connected with the pixel circuit, and the second conductive structures 22 are used for receiving a first display signal and a touch signal in a time-sharing mode; 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 as 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 insulated from each other, in the 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 the touch signal through the second conductive structure 22, so that the second electrode blocks 3 are reused as the touch electrode blocks, that is, the second electrode blocks 3 have the touch function, the display panel provided in the embodiment of the present invention transmits the first display signal and the touch signal to the second electrode blocks 3 in a time-sharing manner by using the second conductive structures 22 of the first electrode layer 2, and the second conductive structures 22 and the first conductive structures 21 are insulated from each other, thereby effectively avoiding signal interference between the two. Meanwhile, the second electrode block 3 is reused as a 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 requirement of lightness and thinness 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, in the display phase, the electrical signal of the pixel circuit received by the first conductive structure 21 may specifically be a VDD positive voltage signal, and meanwhile, the first display signal received by the second electrode block 3 from the second conductive structure 22 may specifically be a VSS negative voltage, so that a voltage difference is formed between the first conductive structure 21 and the second electrode block 3 to drive the light emitting layer to emit light for display. In the touch stage, the pixel circuit does not operate, 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 reused as a touch electrode block for detecting a touch state of an object such as a finger.
Optionally, the pixel circuit includes a plurality of thin film transistors, each thin film transistor 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 the packaging layer 6 on the side away from the substrate 11, the packaging layer 6 specifically comprises a first inorganic packaging layer 61, an organic packaging layer 62 and a second inorganic packaging layer 63, the packaging layer 6 is arranged to block the invasion of external water and oxygen, and the flatness of the display panel film is improved.
It should be noted that, in order to ensure the accuracy of the second electrode block 3 for detecting the touch position, the second conductive structures 22 and the second electrode block 3 are connected in a one-to-one correspondence manner or the plurality of second conductive structures 22 are connected in a correspondence manner with one second electrode block 3, so as to ensure that when each second electrode block 3 is touched, the fed-back signals do not interfere with each other, and the situation that one second conductive structure 22 corresponds to the plurality of second electrode blocks 3 is avoided.
In order to transmit the first display signal and the touch signal to the second electrode block 3 in a time-sharing manner, in some optional embodiments, the second conductive structure 22 includes a signal line and a connecting portion, the connecting portion is electrically connected to the second electrode block 3, and the second electrode block 3 receives the first display signal and the touch signal through the signal line.
Specifically, some other film layers, such as an inorganic insulating layer and a pixel defining layer 4, exist between the signal line and the second electrode block 3, and when another film layer exists between the signal line and the second electrode block 3, a via hole may be provided in the other film layer, and the connecting portion and the second electrode block 3 are connected through the via hole to implement signal transmission. In order to improve the uniformity of the touch signals received by each second electrode layer during touch, in some optional 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, the second conductive structures 22 include second conductive structures connected to the second electrode blocks 3 close to the bonding area NA3 and second conductive structures connected to the second electrode blocks 3 far away from the bonding area NA3, and a trace width of signal lines of the second conductive structures is less than or equal to a trace width of signal lines of the second conductive structures.
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 insulated from each other, so as to improve the accuracy of detecting the touch position. In this embodiment, the second electrode block 3 connected to the second conductive structure is closer to the bonding area NA3, so the trace length of the second conductive structure is relatively shorter, and the second electrode block 3 connected to the second conductive structure is relatively far away from the bonding area NA3, so the trace length of the second conductive structure is relatively longer. In this embodiment, the trace width of the signal line of the second conductive structure is set to be less than or equal to the trace width of the signal line of the second conductive structure, and when the trace width of the signal line of the second conductive structure is set to be less than the trace width of the signal line of the second conductive structure, the problem of impedance difference caused by the difference in trace length between the second conductive structure and the second conductive structure can be balanced, so that the voltage difference between the second electrode block 3 close to one end of the bonding region NA3 and the second electrode block 3 far from one end of the bonding region NA3 is reduced, and the uniformity of the received touch signal of each second electrode layer during touch is improved. And when the wiring width of the signal line of the second conductive structure is set to be equal to that of the signal line of the second conductive structure, the manufacturing difficulty can be reduced, and the production cost can be reduced. Of course, the impedance difference may also be balanced in other forms, for example, by providing a slot on the signal line of the second conductive structure or the signal line of the second conductive structure, so as to adjust the impedance of the signal line of the second conductive structure or the signal line of the second conductive structure.
Referring to fig. 2, in some optional embodiments, the array substrate further includes a pixel defining layer 4, the pixel defining layer 4 is disposed on a side of the first electrode layer 2 away from the array substrate 1, the pixel defining layer 4 includes a plurality of pixel openings, the pixel openings expose at least a portion of the first conductive structures 21, and the second conductive structures 22 are connected to the second electrode blocks 3 through vias disposed in the pixel defining layer 4.
Specifically, a via hole is disposed on the pixel defining layer 4, the second conductive structure 22 may extend into the via hole and be electrically connected to the second electrode block 3 on the other side of the pixel defining layer 4, and the pixel defining layer 4 may be made of organic glue, resin, or other materials.
Optionally, the display panel includes a plurality of sub-pixels, and the orthographic projection of the second conductive structure 22 on the substrate 11 and the orthographic 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 the orthographic projections of the sub-pixels on the substrate 11, so as to avoid the second conductive structure 22 from adversely affecting the light emitted from 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, and the non-display area NA includes adjacent partition areas NA1, bending areas NA2 and binding areas NA 3; the array substrate 1 further includes a first conductive part 5 and a second conductive part 8, the first conductive part 5 and the second conductive part 8 are disposed on the same layer, the first conductive part 5 is disposed in the display area AA, at least a portion of the second conductive part 8 is disposed in the bending area NA2, the first conductive part 5 is electrically connected to the pixel circuit and the first conductive structure 21, and the second conductive part 8 is electrically connected to the second conductive structure 22. Optionally, the second conductive parts 8 are respectively connected with signal lines; specifically, the second conductive part 8 is connected to the signal line located in the isolation area NA1 and the signal line located in the bonding area NA3 through via holes;
alternatively, the second conductive part 8 located at the cut-off region NA1 is connected to the signal line located at the cut-off region NA1, and the second conductive part 8 located at the cut-off region NA1 extends to the bonding region NA 3.
It should be noted that, since the bending region NA2 of the display panel needs to be bent, the second conductive structure 22 is usually made of a composite material of ITO (Indium tin oxide) -Ag (silver) -ITO, which is prone to wrinkle, crack or fracture when bent. Optionally, the non-display area NA further includes a binding area NA3, the binding area NA3 is disposed on one side of the bending area NA2 away from the display area AA, the second conductive portion 8 is usually made of Ti (titanium) -Al (aluminum) -Ti material, the bending performance of the second conductive portion is relatively good, the second conductive portion 8 located in the blocking area NA1 extends to the binding area NA3, that is, the second conductive portion 8 located in the blocking area NA1 extends to the binding area NA3 through the bending area NA2, the service life of the display panel is prolonged, and the problem that a film layer of the bending area NA2 of the display panel is easily wrinkled, cracked or broken when the display panel is bent is avoided.
In some alternative embodiments, the partition area NA1 includes a first partition PS1 and a second partition PS2, the second partition PS2 is disposed close to the bending area NA2 relative to the first partition PS1, and a signal line is located between a side of at least one of the first partition PS1 and the second partition PS2 close to the substrate 11 and the substrate 11 in a direction perpendicular to the substrate 11.
The first partition part PS1 and the second partition part PS2 may be respectively formed by a single-layer insulating layer, for example, by using a material such as silicon nitride or silicon oxide, or a material such as organic glue, and the signal line is provided between the substrate 11 and at least one of the first partition part PS1 and the second partition part PS2 close to the substrate 11, so that the gradient of the signal line climbing can be effectively reduced, and 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 disposed in a stacked manner in a direction perpendicular to the substrate 11, and the signal line is at least partially located between a side of one of the insulating layers of at least one of the first partition PS1 and the second partition PS2, which is close to the substrate 11, and the substrate 11.
Referring to fig. 5, when the signal line is at least partially located between the substrate 11 and one side of the insulating layer close to the substrate 11 of both the first partition PS1 and the second partition PS2, in the specific implementation manner, in the direction perpendicular to the substrate 11, the insulating layers of the first partition PS1 and the second partition PS2 each include the pixel defining material layer 41 and the support posts 7 which are stacked; the signal line includes a first wiring segment 221, a second wiring segment 222, and a third wiring segment 223 connected to each other, the first wiring segment 221 is provided between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second wiring segment 222 is provided between the first partition PS1 and the substrate 11, one end of the second wiring segment 222 is connected to the first wiring segment 221, the other end is connected to the third wiring segment 223, and the third wiring segment 223 is provided between the substrate 11 and the pixel defining material layer 41 of the second partition PS 2.
In this embodiment, the first wire segment 221 is disposed between the substrate 11 and the pixel definition material layer 41 of the first partition PS1, the second wire segment 222 is disposed between the first partition PS1 and the substrate 11, and the third wire segment 223 is disposed between the substrate 11 and the pixel definition material layer 41 of the second partition PS2, that is, there is no step difference between the first wire segment 221, the second wire segment 222, and the third wire segment 223, so that the signal line is effectively prevented from climbing at the first partition PS1 and the second partition PS2, and the risk of wire breakage and etching residue of the signal line in the partition area NA1 is further reduced.
In some alternative embodiments, the first partition PS1 and the second partition PS2 respectively include at least two insulating layers disposed in a stacked manner 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 of the first partition PS1 and the second partition PS2 facing away from the substrate 11.
Referring to fig. 6, when the signal lines are at least partially located on at least one insulating layer of the first partition PS1 and the second partition PS2, which is away from the surface of one side of the substrate 11, the specific implementation is as follows, the first partition PS1 and the second partition PS2 both 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 from the substrate, the two insulating layers in the partitions may be respectively disposed in the same layer as the first insulating layer 15 and the fifth insulating layer 16 located in the display region, and may be formed by the same process, that is, the two insulating layers in the first partition PS1 and the second partition PS2 are respectively the same as the first insulating layer 15 and the fifth insulating layer 16 of the array substrate 1.
It should be noted that the materials of the insulating layers of the first partition PS1 and the second partition PS2 are the same as the material of at least one insulating layer of the display area AA, that is, the materials of the insulating layers of the first partition PS1 and the second partition 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 using the same material and the same process, and the pixel defining material layer 41 and the pixel defining layer 4 may be disposed in the same layer. The display area AA is also provided with a support column 7, the support column 7 of the partition area NA1 and the support column 7 of the display area AA are made of the same material, and the support column 7 of the partition area NA1 and the support column 7 of the display area AA are molded by the same process and the same material.
Optionally, the insulating layer of the second partition PS2 further includes a pixel defining material layer 41, the pixel defining material layer 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 part of the signal line is disposed between the fifth insulating layer 16 of the second partition PS2 and the pixel defining material layer 41.
In some alternative embodiments, in the direction perpendicular to the substrate 11, each of the first partition PS1 and the second partition PS2 includes at least two insulating layers disposed in a stacked manner, at least a part of the signal line is located between the substrate 11 and a side of one of the first partition PS1 and the second partition PS2 close to the substrate 11, and at least a part of the signal line is located on a side surface of the other of the first partition PS1 and the second partition PS2, which is opposite to the substrate 11.
Referring to fig. 7, in an alternative embodiment, in a direction perpendicular to the substrate 11, the insulating layer of the first partition PS1 includes the pixel defining material layer 41 and the supporting pillar 7 which are stacked, and the second partition PS2 includes the first insulating layer 15, the pixel defining material layer 41 and the supporting pillar 7 which are stacked; the signal line includes a first wiring segment 221, a second wiring segment 222, and a third wiring segment 223 connected to each other, the first wiring segment 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second wiring segment 222 is disposed between the first partition PS1 and the substrate 11, one end of the second wiring segment 222 is connected to the first wiring segment 221, the other end is connected to the third wiring segment 223, and the third wiring segment 223 is disposed between the first insulating layer 15 of the second partition PS2 and the pixel defining material layer 41.
In this embodiment, the first wire trace 221 is disposed between the substrate 11 and the pixel defining material layer 41 of the first partition PS1, the second wire trace 222 is disposed on the substrate 11 side between the first partition PS1 and the second partition PS2, and the first wire trace 221 and the second wire trace 222 are located at the same height, and there is no step difference therebetween, so that during the formation of the first wire trace 221 and the second wire trace 222, the first wire trace 221 and the second wire trace 222 do not cause problems such as wire breakage and etching residue due to the step difference. The third wire segment 223 formed by extending the second wire segment 222 to the second partition part PS2 is disposed between the first insulating layer 15 and the pixel defining material layer 41 of the second partition part PS2, and the step difference between the second wire segment 222 and the third wire segment 223, that is, the thickness of the first insulating layer 15, is relatively small, the gradient of the signal line climbing is small, so that the risk of the signal line breaking and etching residue is effectively reduced.
Referring to fig. 10, an embodiment of the present invention further provides a display panel driving method, including:
s110: in the display stage, the second electrode block 3 receives a first display signal through the second conductive structure 22, and the first conductive structure 21 receives a 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 the touch signal through the second conductive structure 22, so that the second electrode block 3 is reused as the touch electrode block, that is, the second electrode block 3 has a touch function.
Optionally, the first display signal and the second display signal are both constant voltages, a voltage difference exists between the first display signal and the second display signal, and the touch signal is a 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 the first display signal and the touch signal to the signal line of the display panel in a time-sharing manner.
Therefore, the display panel provided in the embodiment of the present invention has the technical effects of the technical solutions of the display panels in any of the embodiments, and the explanations of the structures and terms that are the same as or corresponding to the embodiments are not repeated herein. The display panel provided by the embodiment of the invention can be a mobile phone 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:
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 first conductive structures and second conductive structures which are arranged at intervals, the first conductive structures are electrically connected with the pixel circuit, and the second conductive structures are used for receiving a first display signal and a touch signal in a time-sharing mode;
the second electrode layer is arranged on one side, away from the substrate, of the first electrode layer and comprises a plurality of second electrode blocks, the second electrode blocks are electrically connected with the second conductive structures, and in a display stage, the second electrode blocks receive the first display signals through the second conductive structures; in the touch control stage, each second electrode block receives the touch control signal through the second conductive structure to be multiplexed into a touch control electrode block.
2. The display panel according to claim 1, wherein the second conductive structure includes a signal line and a connecting portion connected to each other, the connecting portion is electrically connected to the second electrode block, and the second electrode block receives the first display signal and the touch signal through the signal line.
3. The display panel according to claim 2, wherein the display panel includes a bonding area located in a non-display area, the second conductive structures are connected to the second electrode blocks in a one-to-one correspondence, the second conductive structures include second conductive structures connected to the second electrode blocks close to the bonding area and second conductive structures connected to the second electrode blocks far away from the bonding area, and a routing width of signal lines of the second conductive structures is smaller than or equal to a routing width of signal lines of the second conductive structures.
4. The display panel according to claim 1, further comprising a pixel defining layer disposed on a side of the first electrode layer facing away from the array substrate, wherein 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 blocks are connected by vias disposed on the pixel defining layer;
preferably, the display panel includes a plurality of sub-pixels, and an orthographic projection of the second conductive structure on the substrate and an orthographic projection of the sub-pixels on the substrate are arranged in a staggered manner in a direction perpendicular to a plane where the substrate is located.
5. The display panel according to claim 2, wherein the display panel comprises a display area and a non-display area, wherein the non-display area comprises adjacent partition areas, bending areas and binding areas;
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, at least part of the second conductive part is 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;
preferably, the second conductive parts are respectively connected with the signal lines;
preferably, the second conductive part is connected to the signal line in the partition region and the signal line in the bonding region through via holes, and the signal line in the bonding region extends to the bonding region;
preferably, the second conductive part located in the partition area is connected to the signal line located in the partition area, and the second conductive part located in the partition area extends to the bonding area.
6. The display panel according to claim 5, wherein the partition region comprises a first partition portion and a second partition portion, the second partition portion is disposed close to the bending region relative to the first partition portion, and in a direction perpendicular to the substrate, 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;
preferably, the first partition and the second partition each include at least two insulation layers disposed in a stacked manner, and the signal line is at least partially located between one insulation layer of at least one of the first partition and the second partition on a side close to the substrate and the substrate;
preferably, the material of the insulating layer of the first partition and the material of the insulating layer of the second partition are the same as the material of the at least one insulating layer of the display region;
preferably, at least one of the first partition and the second partition includes a pixel defining material layer in an insulating layer, and the pixel defining material layer are made of the same material.
7. The display panel according to claim 5, wherein the partition region comprises a first partition portion and a second partition portion, the second partition portion is disposed close to the bending region relative to the first partition portion, in a direction perpendicular to the substrate, the first partition portion and the second partition portion respectively comprise at least two insulating layers disposed in a stacked manner, and the signal line is at least partially disposed on a side surface of at least one of the first partition portion and the second partition portion, which is opposite to the substrate;
or, in the direction perpendicular to the substrate, the first partition and the second partition respectively include at least two stacked insulating layers, at least part of the signal line is located between one side, close to the substrate, of one insulating layer of one of the first partition and the second partition, the insulating layer of the side close to the substrate, and at least part of the signal line is located on one side surface, away from the substrate, of the at least one insulating layer of the other one of the first partition and the second partition;
preferably, the material of the insulating layer of the first partition and the material of the insulating layer of the second partition are the same as the material of the at least one insulating layer of the display region;
preferably, at least one of the first partition and the second partition includes a pixel defining material layer in an insulating layer, and the pixel defining material layer are made of the same material.
8. A display panel driving method, 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;
and in the touch control stage, the second electrode block receives a touch control signal through the second conductive structure.
9. The method according to claim 8, wherein the first display signal and the second display signal are both constant voltages and have a voltage difference therebetween, and the touch signal is a rectangular pulse voltage;
preferably, in the display stage, the display control switch is turned on, the first conductive structure receives the second display signal through the pixel circuit, and the 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.
10. A display device, comprising:
a display panel according to any one of claims 1 to 7;
and the control chip is electrically connected with the display panel.
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