CN112732127B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112732127B CN112732127B CN202011613013.8A CN202011613013A CN112732127B CN 112732127 B CN112732127 B CN 112732127B CN 202011613013 A CN202011613013 A CN 202011613013A CN 112732127 B CN112732127 B CN 112732127B
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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Abstract
The invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area at least partially surrounding the display area, wherein the display area comprises a first display area, a bent display area and a second display area which are arranged along a first direction, the first display area and the second display area are not on the same display plane, and the bent display area is connected with the first display area and the second display area; the display panel comprises a plurality of touch electrode blocks and a touch signal line connected with at least one touch electrode block; the bent display area comprises a connecting part for connecting two adjacent touch electrode blocks; at least part of the touch signal lines are arranged in the bent display area, so that the number of the touch signal lines arranged in the non-display area is reduced, the width of a frame of the non-display area is greatly reduced, and the realization of a narrow frame is facilitated.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of touch display technology, people have higher and higher requirements on narrow frames of touch display screens, wherein a mutual capacitive touch screen usually comprises a plurality of touch sensing electrodes (Rx) and a plurality of touch driving electrodes (Tx) and is arranged in a cross insulation manner, and when a touch object touches the display screen, the accurate position of the touch object on the touch screen is determined by detecting the change of capacitance between the touch driving electrodes and the touch detecting electrodes. As the touch area and the touch precision increase, the number of touch electrodes also increases, resulting in an increase in touch routing; under the general condition, the touch-control routing is arranged in the edge area of the touch-control electrode, so that the routing width of the frame area can be greatly increased, and the realization of a narrow frame is not facilitated.
In recent years, flexible touch display is also gradually a hot spot due to its characteristics of being bendable and foldable, and the layout of the touch electrodes and the touch traces also affects the touch performance of the flexible touch display to a great extent.
Therefore, how to ensure that the narrow frame of the touch routing can be realized without affecting the touch performance of the flexible touch display screen is an urgent problem to be solved.
Disclosure of Invention
Embodiments of the present invention provide a display panel and a display device, which effectively implement a narrow frame of a touch display panel by adjusting a layout design of touch electrodes and touch traces without affecting a touch performance.
An embodiment of the present invention provides a display panel, including: the display device comprises a display area and a non-display area at least partially surrounding the display area, wherein the display area comprises a first display area, a bent display area and a second display area which are arranged along a first direction, the first display area and the second display area are not on the same display plane, and the bent display area is connected with the first display area and the second display area; the display panel further includes: a substrate base plate; the touch layer is arranged on one side of the substrate and comprises a touch electrode layer and a bridge layer which are arranged in a laminated mode, the touch electrode layer comprises a plurality of touch electrode blocks, and the bent display area comprises a connecting part for connecting two adjacent touch electrode blocks;
the display panel further comprises a plurality of touch signal lines extending along the second direction, at least one touch electrode block is connected with one touch signal line, and the first direction and the second direction are crossed;
at least part of the touch signal lines are arranged in the curved display area.
Based on the same inventive concept, embodiments of the present invention further provide a display device, including the display panel provided in any embodiment of the present invention.
The display panel provided by the embodiment of the invention comprises a display area and a non-display area, wherein the display area comprises a first display area, a bent display area and a second display area which are arranged along a first direction; the display panel comprises a plurality of touch electrode blocks and a touch signal line connected with at least one touch electrode block; the bent display area comprises a connecting part for connecting two adjacent touch electrode blocks; at least part of the touch signal lines are arranged in the bent display area, so that the number of the touch signal lines arranged in the non-display area is reduced, the width of a frame of the non-display area is greatly reduced, and the realization of a narrow frame is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of a display panel in an unfolded state according to an embodiment of the present invention;
fig. 2 is a schematic view of a display panel in a bent state according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along section line X-X' of FIG. 2 according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along section line Y-Y' of FIG. 4 according to an embodiment of the present invention;
FIG. 6 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 7 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 10 is an enlarged schematic view of the portion A of FIG. 9 according to an embodiment of the present invention;
FIG. 11 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 12 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 13 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 14 is a schematic plan view of a display panel according to an embodiment of the present invention;
fig. 15 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in numerous ways, different from those described herein, and various embodiments can be implemented in combination without contradiction. Those skilled in the art can now make similar generalizations without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Generally, the flexible touch display can be folded to realize a touch function in the side display area, so that the frame width of the side display area can be further increased, the screen occupation ratio of the side display area can be reduced, and the viewing experience of a user is influenced.
In order to solve the above problems and achieve a narrow frame of a side display area of a flexible touch display, an embodiment of the present invention provides a display panel, including: the display device comprises a display area and a non-display area at least partially surrounding the display area, wherein the display area comprises a first display area, a bent display area and a second display area which are arranged along a first direction, the first display area and the second display area are not on the same display plane, and the bent display area is connected with the first display area and the second display area; the display panel further includes: a substrate base plate; the touch control layer is arranged on one side of the substrate and comprises a touch control electrode layer and a bridge layer which are arranged in a laminated mode, the touch control electrode layer comprises a plurality of touch control electrode blocks, and the bent display area comprises a connecting part for connecting two adjacent touch control electrode blocks;
the display panel further comprises a plurality of touch signal lines extending along a second direction, and at least one touch electrode block is connected with one touch signal line, wherein the first direction and the second direction are crossed;
at least part of the touch signal lines are arranged in the curved display area.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
An embodiment of the present invention provides a display panel, as shown in fig. 1 and fig. 2, fig. 1 is a schematic diagram of a display panel provided in an embodiment of the present invention in an unfolded state, fig. 2 is a schematic diagram of a display panel provided in an embodiment of the present invention in a folded state, and the display panel 100 includes: a display area AA and a non-display area NA at least partially surrounding the display area AA, the display area AA including a first display area a1, a curved display area WA, and a second display area a2 arranged along a first direction X, the first display area a1 and the second display area a2 not being on a same display plane, the curved display area WA connecting the first display area a1 and the second display area a 2; it is understood that the second display area a2 is a main display area, which is a plane area under the positive viewing angle of human eyes; the first display area a1 is a side display area, and may be a side area in only one direction, or may be two side areas along the first direction X, or four side areas as shown in fig. 1, for example, the side area is a side area under the front view of human eyes, which is not limited in this embodiment of the present invention; the curved display area WA is disposed between the first display area a1 and the second display area a2, and likewise the curved display area may be disposed on at least one side, or four curved display areas as shown in fig. 1.
It should be noted that, when the display panel of the present application displays a screen, the first display area a1, the curved display area WA, and the second display area a2 may present a complete and continuous display screen, or the first display area a1, the curved display area WA, and the second display area a2 may also present an independent display screen, for example, only the curved display area WA and the second display area a2 present a continuous and complete display screen, and the first display area a1 is a side area, and can display auxiliary information such as power, signal strength, date, incoming call, or message alert.
In addition, it is understood that the first display area a1, the curved display area WA, and the second display area a2 are areas where light-emitting sub-pixels are provided and can be used to display a screen.
Along with the development of display technology, display panel is constantly from big change greatly, from thin change thin, from narrow frame to no frame, can never buckle to can buckle, from there being the radian to the four sides is crooked, display panel's edge is crooked promptly, the crooked not only can realize the full-face screen display of front view angle and do not have dead space of edge of bendable display panel, the side also can realize showing simultaneously, visual effect has been promoted, as shown in fig. 1, then buckle four R angles after the dysmorphism cutting through the mode of "folding the carton", form the crooked display panel in four sides, as shown in fig. 2.
Illustratively, as shown in FIG. 3, FIG. 3 is a schematic cross-sectional view taken along section line X-X' of FIG. 2; the display panel 100 further includes: a base substrate 10; the display film layer 20 is disposed on one side of the substrate 10 in the light emitting direction, and the touch layer 30 is disposed on one side of the display film layer 20 away from the substrate.
The substrate comprises a flexible substrate, and the flexible substrate can be made of ultrathin glass, metal foil or high polymer plastic material. Wherein the ultrathin glass comprises ultrathin alkali-free glass, and the thickness of the ultrathin glass is less than 0.2 mm; the metal foil comprises stainless steel foil, aluminum foil, copper foil and the like; the polymer plastic material includes Polyimide (PI), polyvinyl alcohol (PVA), Polyethylene Terephthalate (PET), polymethyl methacrylate (PMMA), and the like. The above materials of the flexible substrate are merely exemplary illustrations, and the embodiment of the present invention is not limited thereto.
Specifically, the display film layer 20 is a film layer for implementing a picture display function, and when the display panel is an organic light emitting display panel, the display film layer 20 may include an array film layer and a light emitting device film layer, the array film layer is used for forming a pixel circuit and a driving circuit to implement driving of a light emitting device, and the light emitting device film layer is used for forming an organic light emitting diode to implement pixel display.
It should be noted that the touch layer 30 can cover the first display area a1, the curved display area WA, and the second display area a2 to implement an effective touch function; in another alternative embodiment, as shown in fig. 3, the touch layer 30 is completely disposed in the first display area a1 and the second display area a2, but the touch layer 30 may not be disposed or partially disposed in the curved display area WA, so that an effective touch operation function cannot be implemented in the curved display area WA.
With continuing reference to FIGS. 4 and 5, FIG. 4 is a schematic plan view of a display panel according to an embodiment of the present invention, and FIG. 5 is a schematic cross-sectional view taken along the section line Y-Y' in FIG. 4; the touch layer 30 includes a bridge layer 31 and a touch electrode layer 32 which are stacked, wherein the bridge layer 31 and the touch electrode layer 32 are separated by an insulating layer, and the relationship between the two layers of the bridge layer 31 and the touch electrode layer 32 is not limited, that is, the bridge layer can be disposed on one side of the touch electrode layer close to the substrate or one side of the touch electrode layer far away from the substrate.
As shown in fig. 4, the touch electrode layer 32 includes a plurality of touch electrode blocks 40, and the curved display area WA includes a connecting portion 60 connecting two adjacent touch electrode blocks 40, it can be understood that two adjacent touch electrode blocks connected by the connecting portion 60 are located in the same row or the same column, and the two adjacent touch electrode blocks are respectively disposed in the first display area a1 and the second display area a 2. The display panel 100 further includes a plurality of touch signal lines 50 extending along a second direction Y, and at least one touch electrode block 40 is connected to one of the touch signal lines 50, wherein the first direction X is crossed or perpendicular to the second direction Y;
at least a portion of the touch signal line 50 is disposed in the curved display area WA.
In the embodiment of the application, part of the touch signal lines are arranged in the bent display area, so that the number of the touch signal lines arranged in the non-display area is reduced, the frame width of the non-display area is greatly reduced, the screen occupation ratio of the first display area, namely the side display area, is increased, and the realization of a narrow frame is facilitated.
As shown in fig. 4, the non-display area NA includes a binding area BA disposed at one side of the display area AA, and a direction in which the display area AA points to the binding area BA is a second direction Y.
It can be understood that the bonding area BA includes a plurality of touch signal pins, and a plurality of touch signal lines on the display panel are bonded and connected to the control chip IC on the flexible circuit board through the touch signal pins, so as to transmit signals to the respective touch signal lines through the driving chip IC.
The touch electrode block 40 includes a plurality of first touch electrode blocks 401 disposed in the first display area a1 and the second display area a2, and the touch function is realized by triggering the first touch electrode blocks 401, it can be understood that the first touch electrode blocks are effective touch electrode blocks, and after the touch operation is performed, the touch signals can be effectively identified; that is, normal touch function operation can be realized in the first display area and the second display area.
Specifically, as shown in fig. 4 and 5, the first touch electrode block 401 includes a plurality of sensing electrode blocks 410 and a plurality of driving electrode blocks 420, the plurality of sensing electrode blocks 410 are arranged in X rows along the first direction and electrically connected through a connection 320 to form a sensing electrode 41, and the plurality of driving electrode blocks 420 are arranged along the second direction Y and electrically connected through a bridge 310 to form a driving electrode 42; the connecting bridge can be arranged on a touch electrode layer on the same layer as the touch electrode block, and the cross bridge is arranged on a cross bridge layer; the sensing electrode blocks 410 disposed in the first display area a1 and the second display area a2 are electrically connected through the connection part 60; alternatively, the driving electrode blocks 420 disposed in the first and second display regions a1 and a2 are electrically connected through the connection part 60.
In an embodiment, the driving electrode block and the sensing electrode block are both grid-shaped touch electrodes, wherein one grid-shaped touch electrode overlaps with a plurality of sub-pixels in a direction perpendicular to the display panel, the grid-shaped touch electrode includes a plurality of openings, and the openings expose light-emitting areas of the pixels, so that the shielding of the driving electrode block and the sensing electrode block on light can be reduced, the light loss caused by the light passing through the touch electrode layer during display is reduced, and the brightness of the display panel is ensured. Especially for the driving electrode and the induction electrode made of metal materials, the design of the latticed touch electrode can effectively reduce the light loss caused by the fact that light penetrates through the metal layer, and the brightness of the display panel is also ensured while the touch performance is ensured.
In the embodiment of the application, the connecting part in the curved display area can select the metal grid to enhance the bending stress of the curved display area, and the touch electrode blocks in the first display area and the second display area can be the metal grid or transparent electrodes.
When this application is as mutual capacitance formula touch sensor, drive electrode is inputed touch-control drive signal in proper order, and sensing electrode exports touch-control detected signal, forms electric capacity between drive electrode and the sensing electrode, when taking place the touch-control on the touch-control display panel, can influence near the touch point capacitive coupling between drive electrode and the sensing electrode to change the electric capacity between drive electrode and the sensing electrode. The specific method for detecting the position of the touch point includes that touch driving signals are sequentially input to the driving electrodes, and touch sensing signals are simultaneously output by the sensing electrodes, so that the capacitance value of the intersection point of all the driving electrodes and the sensing electrodes, namely the capacitance of the two-dimensional plane of the whole touch display panel, can be obtained, and the coordinate of the touch point can be calculated according to the two-dimensional capacitance variation data of the touch display panel.
Optionally, please refer to fig. 4, wherein the touch signal line 50 includes a plurality of sensing signal lines 51, each of the sensing electrodes 41 is electrically connected to at least one of the sensing signal lines 51, and at least a portion of the sensing signal lines 51 are disposed in the curved display area WA.
In the embodiment of the application, the sensing signal line originally arranged in the non-display area NA is arranged in the bent display area, so that the frame width of the non-display area is reduced, and the screen occupation ratio of the first display area is improved.
Optionally, with continued reference to fig. 4, the plurality of sensing electrodes 41 includes a first sensing electrode 411 close to the bonding area BA and a second sensing electrode 412 far away from the bonding area BA; the sensing signal line 51 electrically connected to the first sensing electrode 411 is disposed in the curved display area WA, and the sensing signal line 51 electrically connected to the second sensing electrode 412 is disposed in the non-display area WA. In this embodiment, the sensing signal line connected to the sensing electrode close to the binding region is disposed in the bending display region, and the sensing signal line connected to the sensing electrode far from the binding region is disposed in the non-display region, so that the overlapping between the sensing signal line disposed in the bending display region and the connecting portion can be reduced, the noise of parasitic capacitance caused by overlapping between the sensing signal line and the connecting portion can be reduced, and the touch function can be prevented from being affected.
Optionally, as shown in fig. 6, fig. 6 is another schematic plan view of a partial display panel provided in an embodiment of the present invention, where the touch signal line 50 includes a plurality of driving signal lines 52, each driving electrode 42 is electrically connected to two driving signal lines 52, specifically, the driving signal line 52 includes a plurality of first driving signal lines 521 and a plurality of second driving signal lines 522, one end of the driving electrode 42 close to the bonding area BA is electrically connected to the first driving signal lines 521, and one end of the driving electrode 42 away from the bonding area BA is electrically connected to the second driving signal lines 522; wherein at least part of the second driving signal line 522 is disposed in the curved display area WA. In the embodiment of the application, the driving signal line adopts a 2T detection signal, the precision of touch signal detection is increased, and the second driving signal line is electrically connected to one end of at least part of the driving electrode far away from the binding area and is arranged in the bent display area, so that the frame width of the non-display area is reduced.
Alternatively, with continued reference to fig. 6, the plurality of driving electrodes 42 comprises a first driving electrode 421 close to the curved display area WA and a second driving electrode 422 far from the curved display area WA; the second driving signal line 522 to which the first driving electrode 421 is electrically connected is disposed in the bend display area WA, and the second driving signal line 522 to which the second driving electrode 421 is electrically connected is disposed in the non-display area NA.
In this embodiment, the driving signal lines connected to the driving electrodes close to the curved display area are disposed in the curved display area, and the driving signal lines connected to the driving electrodes far away from the curved display area are disposed in the non-display area, so that the overlapping between the driving signal lines disposed in the curved display area and the connecting portion can be reduced, the noise of parasitic capacitance caused by the overlapping between the driving signal lines and the connecting portion can be reduced, and the touch function can be prevented from being affected.
In another embodiment, as shown in fig. 7, fig. 7 is a schematic plan view of a partial display panel provided in an embodiment of the present invention, and a portion of the sensing electrode signal lines and a portion of the driving signal lines are disposed in the curved display area, so as to further reduce the frame width of the non-display area.
Optionally, in the embodiment of the present invention, the connection portion 60 disposed in the curved display area WA includes a sub-touch electrode block having the same structure as the plurality of first touch electrode blocks disposed in the first display area and the second display area, that is, the connection portion 60 includes at least one sub-touch electrode block, or includes a connection bridge or a bridge spanning between the at least two sub-touch electrode blocks and the connection sub-touch electrode blocks, that is, the curved display area WA can implement the same touch function as the first display area and the second display area. It should be noted that the connection portion 60 only occupies one metal layer in the curved display area, for example, occupies a touch electrode layer, so that it can be ensured that the touch signal line disposed in the curved display area can be disposed on the bridge layer.
In an optional implementation manner, on one hand, the substrate bends in the bending display area, so that the touch electrode layer is inevitably bent, and the touch electrode layer is easily broken due to a large bending stress, so that the touch signal transmission is interrupted, and the touch function is lost; on the other hand, the area of the curved display area is small, the finger touch is uneven, and the implementation experience of the touch function is not good; therefore, the touch function is not arranged in the curved display area in one implementation mode, and therefore the curved display area can be differentially arranged due to the fact that the touch function is not arranged, and the risk of splitting of the curved display area caused by bending stress is obviously improved on the premise that touch experience is not obviously influenced.
Alternatively, as shown in fig. 4, 6 and 7, the connecting portion 60 disposed in the curved display area includes a connecting bridge or a bridging bridge, that is, no touch electrode block is disposed in the curved display area, and only the connecting bridge is disposed to connect the touch electrodes of the first display area and the second display area, so as to serve as a bridge for transmitting signals.
In an alternative embodiment, please refer to fig. 8, fig. 8 is a partial schematic plan view of a display panel according to an embodiment of the present invention, and fig. 8 is a schematic view of a sensing electrode 41, where when a connection portion is a connection bridge, a width d1 of the connection bridge in a curved display area is greater than a width d2 of the connection bridge in a second display area; in another alternative embodiment, when the connecting portion is a bridge, the width of the bridge in the curved display area is greater than the width of the bridge in the second display area, and the description of the drawings is omitted here.
Optionally, referring to fig. 9, fig. 9 is a partial schematic plan view of a display panel according to an embodiment of the present invention, in which the touch electrode layer 20 further includes a second touch electrode block 402 disposed in the curved display area WA, and the connection portion 60 includes the second touch electrode block 402; the second touch electrode block 402 includes an effective electrode 61 electrically connecting the two touch electrode blocks, wherein,
the touch area S1 of the first touch electrode block 401 and the touch area S2 of the effective electrode 61 satisfy the following relationship: s1 is more than 0 and less than or equal to 10 percent and S2.
It can be understood that the effective area of the effective electrode included in the second touch electrode block in the curved display area is within 10% of the effective area of the conventional touch electrode block, which means that the effective electrode in the curved display area still cannot implement the touch function, and the touch function operated by the user is not affected; on the other hand, the effective area of the second touch electrode block is reduced, and the risk that cracks caused by bending stress in the bent display area extend to the first display area or the second display area is reduced.
Optionally, referring to fig. 10, fig. 10 is an enlarged schematic view of a position a in fig. 9 according to an embodiment of the present invention, in which the touch electrode blocks are in a metal grid shape, so that the density of the metal grid of the second touch electrode block in the curved display area is reduced, and the effective area of the second touch electrode block is 10% of the effective area of the first touch electrode block.
Optionally, referring to fig. 11, fig. 11 is a partial schematic plan view of a display panel according to an embodiment of the present invention; the second touch electrode block 402 further includes a virtual electrode 62, and the potential of the virtual electrode 62 is floating. It can be understood that the virtual electrode is not connected to any potential, and due to the arrangement of the virtual electrode, the etching uniformity of the first touch electrode around the virtual electrode is ensured, and the touch performance is ensured to be uniform.
In addition, the sum of the area S3 of the virtual electrode and the area of the effective electrode S2 is approximately equal to the touch area S1 of the first touch electrode, and specifically, 0.9S1 is equal to or less than S2+ S3 is equal to or less than 1.1S1, so that the areas of the first touch electrode block and the second touch electrode block are equal to each other, and the process etching uniformity is further improved.
Optionally, the virtual electrode is surrounded by the effective electrode, and the effective electrode can be effectively connected to the touch electrode blocks in the first display area and the second display area.
Optionally, referring to fig. 12, fig. 12 is a further plan partial schematic view of a display panel according to an embodiment of the present invention, as shown in fig. 12, in two curved display areas WA oppositely disposed along a first direction X, a connection portion 60 connects sensing electrode blocks disposed in a first display area a1 and a second display area a2, wherein the connection portion and the sensing electrode blocks in the curved display areas are disposed in the same layer, that is, disposed in a touch electrode layer, and at this time, a touch signal line disposed in the curved display area WA includes a sensing signal line, or a touch signal line, or a sensing signal line and a touch signal line, and is disposed in a bridge layer.
In at least one bending display area WA oppositely arranged along the second direction Y, the connecting portion 60 connects the driving electrode blocks arranged in the first display area a1 and the second display area a2, wherein the connecting portion and the bridging layer in the bending display area are arranged on the same layer, i.e. on the bridging layer, and at this time, the touch signal line arranged in the bending display area WA, including the sensing signal line, and the second touch signal line are arranged on the touch electrode layer.
In the embodiment, the bending stress in the curved display area may cause the risk of breaking the touch electrode block, and the touch operation area in the area is uneven, so that no touch function operation is performed, that is, a touch function of the curved display area is abandoned, only the connecting part is arranged to ensure transmission of the touch signal, and meanwhile, a large number of touch signal lines are arranged by using the space, so that the frame width of the non-display area can be significantly reduced, and the narrow frame effect of side display is realized.
Optionally, as shown in fig. 13, fig. 13 is another schematic plan view of a partial display panel according to an embodiment of the present invention, two ends of each sensing electrode are electrically connected to a sensing signal line, two ends of each driving electrode are electrically connected to a driving signal line, and the sensing electrode and the driving electrode use a dual-channel transmit signal and receive signal of 2T2R, so as to enhance sensitivity of touch detection: however, the number of the touch signal lines is greatly increased by the 2T2R mode touch trace, and the touch signal lines are disposed in the curved display area in this embodiment, which greatly reduces the frame width of the non-display area.
Optionally, as shown in fig. 14, fig. 14 is a partial schematic plan view of another display panel provided in the embodiment of the present invention, where the second display area is a main display area, the first display area is a side display area, and the side display area surrounds the main display area; the first touch electrode block may be normally disposed in the first display region near the bonding region, however, the touch signal line disposed in the curved display region may extend into the first display region near the bonding region, and the touch signal line extending into the region is limited to include a sub-touch signal line, and the sub-touch signal line may inevitably overlap with the first touch electrode block, as shown in a region B in fig. 14, and the capacitance generated by the overlap between the two may generate significant capacitance background noise, thereby reducing the touch function in the first display region near the bonding region.
Therefore, in the embodiment, the touch electrode blocks overlapped with the sub-touch signal lines are arranged in the hollow areas, so that the influence of parasitic capacitance generated by overlapping between the sub-touch signal lines and the touch electrode blocks is reduced.
It can be understood that the first display area is used as the side display area, so that touch operations such as volume adjustment, brightness adjustment and the like can be implemented, and the user can conveniently and quickly operate the touch screen.
It is emphasized that the various embodiments described in this application can be implemented in any combination without mutual exclusion.
Based on the same inventive concept, an embodiment of the present invention further provides a display apparatus, fig. 15 is a schematic view of the display apparatus provided in the embodiment of the present invention, and as shown in fig. 15, a display apparatus 200 includes the display panel 100 provided in any embodiment of the present invention. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 15 is only a schematic illustration, and the display device may be any electronic device with a touch function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (16)
1. A display panel, comprising: the display device comprises a display area and a non-display area at least partially surrounding the display area, wherein the display area comprises a first display area, a bent display area and a second display area which are arranged along a first direction, the first display area and the second display area are not on the same display plane, and the bent display area is connected with the first display area and the second display area;
the display panel further includes:
a substrate base plate;
the touch layer is arranged on one side of the substrate and comprises a touch electrode layer and a bridge layer which are arranged in a laminated mode, the touch electrode layer comprises a plurality of touch electrode blocks, and the bent display area comprises a connecting part for connecting two adjacent touch electrode blocks;
the display panel further comprises a plurality of touch signal lines extending along a second direction, at least one touch electrode block is connected with one touch signal line, and the first direction and the second direction are crossed;
at least part of the touch signal lines are arranged in the curved display area.
2. The display panel according to claim 1, comprising:
the non-display area comprises a binding area, and the direction of the display area towards the binding area is the second direction;
the touch electrode blocks comprise a plurality of first touch electrode blocks arranged in the first display area and the second display area, and a touch function is realized by triggering the first touch electrode blocks; the first touch electrode block comprises a plurality of induction electrode blocks and a plurality of driving electrode blocks, the induction electrode blocks are arranged along the first direction and are electrically connected through a connecting bridge to form induction electrodes, and the driving electrode blocks are arranged along the second direction and are electrically connected through a bridge to form driving electrodes;
the induction electrode blocks or the driving electrode blocks arranged in the first display area and the second display area are electrically connected through the connecting parts.
3. The display panel according to claim 2,
the touch signal line comprises a plurality of induction signal lines, each induction electrode is electrically connected with at least one induction signal line, and at least part of the induction signal lines are arranged in the bent display area.
4. The display panel according to claim 3, wherein the plurality of sensing electrodes comprises a first sensing electrode close to the bonding region and a second sensing electrode far from the bonding region;
the sensing signal lines electrically connected with the first sensing electrodes are arranged in the bent display area, and the sensing signal lines electrically connected with the second sensing electrodes are arranged in the non-display area.
5. The display panel according to claim 2, wherein the touch signal lines include a plurality of driving signal lines, each of the driving electrodes is electrically connected to two of the driving signal lines, the driving signal lines include a plurality of first driving signal lines and a plurality of second driving signal lines, one end of each of the driving electrodes close to the bonding region is electrically connected to the first driving signal line, and one end of each of the driving electrodes far away from the bonding region is electrically connected to the second driving signal line; wherein the content of the first and second substances,
at least part of the second driving signal lines are disposed in the curved display region.
6. The display panel according to claim 5,
the plurality of driving electrodes comprise a first driving electrode close to the curved display area and a second driving electrode far away from the curved display area;
the second driving signal line electrically connected with the first driving electrode is arranged in the bent display area, and the second driving signal line electrically connected with the second driving electrode is arranged in the non-display area.
7. The display panel according to claim 2, wherein the connection portion comprises the connection bridge or the bridge.
8. The display panel according to claim 7,
in the direction perpendicular to the plane of the substrate base plate, the curved display area and the touch electrode block are not overlapped;
the curved display area comprises only the connecting bridge or the bridging bridge.
9. The display panel according to claim 2, wherein the touch electrode layer further includes a second touch electrode block disposed in the curved display region, and the connection portion includes the second touch electrode block;
the second touch electrode block includes effective electrodes electrically connecting the two touch electrode blocks, wherein,
the touch area S1 of the first touch electrode block and the touch area S2 of the active electrode satisfy the following relationship: s1 is more than 0 and less than or equal to 10 percent and S2.
10. The display panel according to claim 9, wherein the second touch electrode block further comprises a dummy electrode, and a potential of the dummy electrode is floating.
11. The display panel of claim 10, wherein the touch area S1 of the first touch electrode block, the touch area S2 of the active electrodes, and the area S3 of the dummy electrodes satisfy the following relationship: 0.9S1 is not less than S2+ S3 is not less than 1.1S 1.
12. The display panel according to claim 10, wherein the active electrode surrounds the dummy electrode.
13. The display panel according to claim 1,
the connecting part is arranged on the touch electrode layer, and at least part of the touch signal lines arranged in the bent display area are arranged on the bridge layer; alternatively, the first and second electrodes may be,
the connecting part is arranged on the bridge layer, and at least part of the touch signal lines arranged in the bent display area are arranged on the touch electrode layer.
14. The display panel of claim 1, wherein the touch electrode block is a metal mesh or a transparent electrode.
15. The display panel according to claim 1, wherein the second display region is a main display region, the first display region is a side display region, and the side display region surrounds the main display region;
the touch control electrode block is arranged on the side display area, at least part of the touch control signal lines arranged on the bent display area extend to the side display area, the touch control electrode block comprises sub touch control signal lines arranged on the side display area, and at least part of the overlapped part of the touch control electrode block and the sub touch control signal lines is hollow.
16. A display device characterized in that it comprises a display panel as claimed in any one of the preceding claims 1-15.
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| CN202011613013.8A CN112732127B (en) | 2020-12-30 | 2020-12-30 | Display panel and display device |
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| WO2022252033A1 (en) * | 2021-05-31 | 2022-12-08 | 京东方科技集团股份有限公司 | Touch panel and display device |
| CN114327133B (en) * | 2021-12-21 | 2023-07-04 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| CN114415861B (en) * | 2022-02-15 | 2023-11-28 | 武汉华星光电半导体显示技术有限公司 | display panel |
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| CN109658831B (en) * | 2018-12-20 | 2021-05-04 | 厦门天马微电子有限公司 | Display panel and display device |
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