CN106371666B - Display panel and touch display device - Google Patents
Display panel and touch display device Download PDFInfo
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- CN106371666B CN106371666B CN201610789580.6A CN201610789580A CN106371666B CN 106371666 B CN106371666 B CN 106371666B CN 201610789580 A CN201610789580 A CN 201610789580A CN 106371666 B CN106371666 B CN 106371666B
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
Abstract
The invention provides a display panel and a touch display device, wherein the display panel comprises a plurality of first touch electrodes, each first touch electrode extends along a first direction, the plurality of first touch electrodes are sequentially arranged along a second direction, and the first direction is intersected with the second direction; the first touch control electrodes are connected with the first integrated circuit through the first touch control leads; at least one of the first touch leads has at least one first hollow area, and the relative deviation between the resistance values of any two of the first touch leads is less than or equal to 20%. According to the display panel provided by the invention, under the condition that the lengths of the first touch leads are different, the resistance values of the first touch leads are kept equal or nearly equal, so that the uniformity of touch sensitivity is kept.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a touch display device comprising the same.
Background
With the rapid development of display technology, touch display technology has gradually spread throughout the lives of people. In the conventional display panel, compared with the resistive touch display panel, the capacitive touch display panel has the advantages of long service life, high light transmittance, capability of supporting multi-point touch, and the like, and becomes a hot spot of the touch display technology. The capacitive touch display panel mainly comprises a self-capacitive touch display panel and a mutual-capacitive touch display panel, and a common mutual-capacitive touch display panel is internally provided with driving electrodes and sensing electrodes which are oppositely arranged and are arranged in a crossed manner.
Fig. 1A is a schematic diagram of a capacitive touch display panel in practical application. Comprises a first touch electrode 101 (sensing electrode), a first touch lead 102, a second touch electrode 103 (driving electrode), a second touch lead 104 and an integrated circuit 105. Taking the first touch electrode 101 in fig. 1 as an example, the farther the distance from the integrated circuit 105, the longer the length of the first touch lead 102. In practical applications, for the sake of production cost and process considerations, the shape and material of each first touch electrode 101 are substantially the same, and thus the resistance of each first touch electrode 101 is substantially the same. At this time, whether the resistance values of the first touch leads 102 are the same or not will have a large influence on the uniformity of the touch sensing sensitivity. Therefore, the touch sensing sensitivity uniformity of the display panel needs to be adjusted by adjusting the resistance of each first touch lead 102. Law of reference resistance
R＝ρL/S
Wherein R is the resistance of the material, ρ is the resistivity of the material, L is the length of the material, and S is the effective conductive area of the material. In practical applications, the first touch leads 102 have the same structure and material, i.e., the same parameter ρ and the same length L, and therefore, if the resistances of the first touch leads 102 are the same, the conductive area S of the first touch leads needs to be adjusted.
Fig. 1B to fig. 1C are two technical solutions for adjusting the resistances of the first touch leads 102 to be equal or nearly equal in fig. 1A. Referring to fig. 1B, in the horizontal direction, the width of the first touch lead is gradually increased from inside to outside, so that the first touch lead near the first integrated circuit 105 is too thin and is prone to wire breakage. Referring to fig. 1C, in a further improvement, in the vertical direction, the width of the first touch lead increases from bottom to top, which causes the problem of uneven folding angle shown by the dashed box in fig. 1C. Therefore, in addition to the problem of wire breakage, the scheme also increases the complexity of the graph and the complexity of the design, and is influenced by the process, so that the precision is not easy to ensure.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
An object of the present invention is to provide a display panel and a touch display device, which overcome one or more of the problems due to the limitations and disadvantages of the related art, at least to some extent.
According to an aspect of an embodiment of the present invention, there is provided a display panel including: the touch control device comprises a plurality of first touch control electrodes, a plurality of second touch control electrodes and a plurality of touch control units, wherein each first touch control electrode extends along a first direction, the plurality of first touch control electrodes are sequentially arranged along a second direction, and the first direction is intersected with the second direction; the first touch control electrodes are connected with the first integrated circuit through the first touch control leads; the at least one first touch lead is provided with at least one first hollow area, and the relative deviation between the resistance values of any two first touch leads is less than or equal to 20%.
According to another aspect of the embodiments of the present invention, a touch display device is provided, which includes the display panel.
In an exemplary embodiment of the invention, the first hollow areas are disposed on the first touch leads to be hollow, so that a relative deviation between resistance values of any two first touch leads is less than or equal to 20%. On one hand, under the condition that the lengths of the first touch leads are different, the resistance values of the first touch leads are kept equal or nearly equal, and therefore the uniformity of touch sensitivity is kept. On the other hand, compared with other technical solutions for keeping the resistance values of the first touch lead lines equal or nearly equal in the prior art, the technical solution in the exemplary embodiment of the present invention does not need to design the width of the first touch lead lines to be too narrow, so that the problem of wire breakage can be reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1A schematically illustrates a technical solution of adjusting the resistances of the first touch leads to be equal or nearly equal;
FIG. 1B schematically shows an enlarged detail of one of the solutions of FIG. 1A;
FIG. 1C schematically shows an enlarged detail view of another solution in FIG. 1A;
FIG. 2A schematically illustrates a structure of a display panel in an exemplary embodiment of the invention;
FIG. 2B schematically illustrates a layout of a first touch lead of a display panel according to an exemplary embodiment of the invention;
FIG. 2C schematically illustrates another layout of first touch leads of a display panel according to an exemplary embodiment of the invention;
FIG. 3A schematically illustrates a layout of a first touch lead of a display panel according to an exemplary embodiment of the invention;
FIG. 3B schematically shows an enlarged detail view of a first touch lead design of the display panel of FIG. 3A;
FIG. 3C schematically illustrates an enlarged detail view of another first touch lead design of the display panel of FIG. 3A;
fig. 4A schematically shows an overall structure of a display panel in an exemplary embodiment of the invention;
fig. 4B schematically shows an overall structure of another display panel in an exemplary embodiment of the invention;
fig. 5 is a schematic view of a touch display device provided in the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the invention.
Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The invention will be explained in further detail below with reference to the drawings. Fig. 2A is a structure of a display panel according to the present exemplary embodiment.
Referring to fig. 2A, the display panel 200 in the present example embodiment may include a plurality of first touch electrodes, i.e., first touch electrodes a1 to A8 in the illustration; a plurality of first touch leads, i.e., the first touch leads a 1-a 8 in the figure; a plurality of second touch electrodes, i.e., second touch electrodes B1-B8 in the figure; a plurality of second touch leads b 1-b 8 and the first integrated circuit 205. It should be noted that the number of the touch electrodes and the number of the touch first touch leads in the exemplary embodiment are only exemplary, and are set for the convenience of the reader, and are not used to limit the invention. In the present exemplary embodiment, the first touch electrode electrodes a 1-A8 may all extend along a first direction D1 and are sequentially arranged along a second direction D2, and the first direction D1 intersects with the second direction D2; the first touch electrodes a 1-A8 are connected to the first integrated circuit 205 through first touch leads a 1-A8, respectively, and the lengths of the first touch leads a 1-A8 are different due to different distances from the first integrated circuit 205. In the present exemplary embodiment, the first direction D1 is orthogonal to the second direction D2, but the first direction D1 and the second direction D2 may be other intersection angles, which is only for convenience of illustration and is not intended to limit the intersection angle. The display panel may be a liquid crystal display panel, an organic light emitting display panel, or the like, but the invention is not limited thereto.
When the first touch electrodes a 1-A8 are sequentially arranged along the second direction D2, if each of the first touch leads a 1-A8 is connected to the ends of the first touch electrodes a 1-A8, the length of the first touch lead a1 connected to a first touch electrode a1 farther from the first integrated circuit 205 is greater than the length of the first touch lead a2 connected to a first touch electrode a2 closer to the first integrated circuit 205. Meanwhile, when the first touch lead a1 and the first touch lead a2 are made of the same material, the resistivity ρ is the same. In order to make the resistance R1 of the first touch lead a1 equal to or close to the resistance of the first touch lead a2, at least one hollow area may be disposed on the first touch leads a 1-a 8 in the present exemplary embodiment, and the total area S1 of the hollow areas of the first touch lead a1 is larger than the total area S2 of the hollow areas of the first touch lead a2, that is, the total area of the hollow areas of the first touch lead a1 is smaller than the total area of the hollow areas of the first touch lead a 2. For other first touch leads, the conductive area of the first touch lead can be adjusted by adjusting the total area of the hollow area, so that the effect of adjusting the resistance of each first touch lead to be equal or nearly equal is achieved.
For example, in the present exemplary embodiment, at least one hollow area is disposed on the first touch lead, and the area of the hollow area is adjusted such that the relative deviation between the resistance values of any two first touch leads is less than or equal to 20%; in an ideal case, the resistance values of the first touch leads may be equal. Therefore, according to the technical solution in the present exemplary embodiment, on one hand, when the lengths of the first touch leads are different, the resistance values of the first touch leads are kept equal or nearly equal, so that the uniformity of the touch sensitivity is kept. On the other hand, compared with other technical solutions in the prior art for keeping the resistance values of the first touch lead lines equal or nearly equal, the technical solution in the exemplary embodiment does not need to design the width of the first touch lead lines to be too narrow, so that the problem of wire breakage can be reduced.
In this example embodiment, to simplify the design, the line widths of the first touch leads a 1-a 8 may be equal. In practical application, the line widths of the first touch lead lines are equal, so that the graphic design complexity and the preparation process difficulty of the first touch lead lines can be reduced, and the problem of line breakage caused by over-thin first touch lead lines in the scheme of adjusting the resistance of the first touch lead lines by adjusting the width of the first touch lead lines can be further avoided.
In various technical solutions for adjusting the total area of the hollow areas, the first hollow areas of the first touch leads a 1-a 8 may have a polygonal, circular or elliptical structure; in other embodiments of the present invention, the widths of at least two of the first touch lead lines in the plurality of first touch lead lines are not equal, which does not prevent the resistance of the first touch lead lines from being affected by the change of the hollow area in the present invention, so as to implement a scheme that the resistances of the first touch lead lines are similar, and therefore, the present invention is not limited thereto. Similarly, for practical production needs, the shape of the first hollow-out area of the same first touch lead may be the same pattern, but may also include at least two different patterns, or the shape of the first hollow-out area of different first touch leads may be the same pattern, or may also be different patterns, which is not limited in this disclosure. The scheme that the resistance values of the first touch lead wires are similar as long as the resistance values of the first touch lead wires are influenced by the change of the hollow area is within the protection scope of the invention.
For example, fig. 2B is an enlarged detail view of one first touch lead design in fig. 2A, corresponding to the dashed frame area 210 in fig. 2A. In this exemplary embodiment, the first hollow areas of the first touch leads may have the same pattern. In order to make the resistances of the first touch leads identical or nearly identical, the density of the first hollow areas of the first touch leads may be inversely related to the length of the first touch leads, i.e. if two first touch leads are compared, the length of the first touch leads is long, and the density of the first hollow areas is small; correspondingly, the first touch lead is short in length, and the density of the first hollow area is high.
Referring to fig. 2B, the hollow areas 211, 212, and 213 may be a plurality of patterns with the same shape and size, which are arranged at equal intervals along the extending direction of the first touch lead. When the first touch lead is the first touch lead a2 farther from the first integrated circuit 205, the hollow areas 211, 212, and 213 of the first touch lead a2 may be arranged at an equal distance d1 along the extending direction of the first touch lead a 1; when the first touch lead is the first touch lead a4 closer to the first integrated circuit 105, the hollow areas 211 ', 212 ', and 213 ' of the first touch lead a4 may be arranged at an equal distance d2 along the extending direction of the first touch lead a 4; when the first touch lead is the first touch lead a6 closer to the first integrated circuit 105, the hollow areas 211 ", 212", and 213 "of the first touch lead a6 may be arranged at an equal distance d3 along the extending direction of the first touch lead a 6. In order to equalize the resistances of the first touch leads a2, a4, and a6, the distance d1 is greater than the distance d2 and greater than the distance d3, so that the number of the hollow areas of the first touch lead a2 is less than that of the first touch lead a4, and the number of the hollow areas of the first touch lead a4 is less than that of the first touch lead a 6. Therefore, the total area of the hollow-out areas of the first touch lead a2 is smaller than the total area of the hollow-out areas of the first touch lead a4, the total area of the hollow-out areas of the first touch lead a4 is smaller than the total area of the hollow-out areas of the first touch lead a6, and the total area S1 of the non-hollow-out areas of the first touch lead a2 is larger than the total area S2 of the non-hollow-out areas of the first touch lead a 4; the total area S2 of the non-hollow areas of the first touch lead a4 is greater than the total area S3 of the non-hollow areas of the first touch lead a 6.
Furthermore, in order to simplify the design and meet the actual production requirement, the first hollow area may be rectangular and symmetrical with respect to the central axis of the first touch lead; the first hollow areas on the first touch leads may have the same size along a direction perpendicular to a central axis of the first touch leads. The center lines of the hollow areas 211, 212, and 213 of the first touch lead a2 may be overlapped with the center line of the first touch lead a2, so that the widths of the non-hollow areas at the left and right ends of the hollow area are equal to the widths of the hollow areas 211, 212, and 213. That is, in this further simplified design, the rectangular width of the hollow area is equal to one third of the line width. The width L of each of the first touch lead lines may range from 6 μm to 15 μm according to production requirements. The size R of the first hollow area along a direction perpendicular to the central axis of the first touch lead may range from 1.5 μm to 5 μm. Of course, other dimensions are possible, and the invention is not limited thereto.
For another example, fig. 2C is an enlarged detail view of another first touch lead design in fig. 2A, corresponding to the dashed frame area 210 in fig. 2A. In this exemplary embodiment, the first hollow areas of the first touch leads 202 may be the same type of graphics, and the length of each first hollow area of each first touch lead may be inversely related to the length of each first touch lead 202, that is, if two first touch leads are compared, the length of the first hollow area is small while the length of the first touch lead is long; correspondingly, the first touch lead is short in length, and the first hollow area of the first touch lead is large in length.
With continued reference to fig. 2C, the hollow areas 211, 212, and 213 may be a plurality of patterns with the same shape and arranged at equal intervals along the extending direction of the first touch lead. When the first touch lead is the first touch lead a2 farther from the first integrated circuit 205, the rectangular hollow areas 211, 212, and 213 of the first touch lead a2 may have a length d1 and are arranged at an equal distance d along the extending direction of the first touch lead a 1; when the first touch lead is the first touch lead a4 closer to the first integrated circuit 105, the lengths of the rectangular hollow areas 211 ', 212 ', and 213 ' of the first touch lead a4 may be d2, and the first touch leads are arranged at equal intervals d along the extending direction of the first touch lead a 4; when the first touch lead is the first touch lead a6 closer to the first integrated circuit 105, the lengths of the hollow areas 211 ", 212", and 213 "of the first touch lead a6 may be d3, and the first touch leads are arranged at equal intervals d along the extending direction of the first touch lead a 6. In order to equalize the resistances of the first touch leads a2, a4 and a6, the length d1 may be smaller than the length d2 and smaller than the length d3, so that the total area of the hollow areas of the first touch leads a2 is smaller than the total area of the hollow areas of the first touch leads a4, the total area of the hollow areas of the first touch leads a4 is smaller than the total area of the hollow areas of the first touch leads a6, and the total area S1 of the non-hollow areas of the first touch leads a2 is larger than the total area S2 of the non-hollow areas of the first touch leads a 4; the total area S2 of the non-hollow areas of the first touch lead a4 is greater than the total area S3 of the non-hollow areas of the first touch lead a 6.
Furthermore, in order to simplify the design and meet the actual production requirement, the hollow areas may be rectangular and symmetrical with respect to the central axis of the first touch lead; the first hollow areas on the first touch leads may have the same size along a direction perpendicular to a central axis of the first touch leads. The width of the hollow-out area of the first touch lead a2 can be equal to the distance d, and the center lines of the hollow-out areas 201, 202, and 203 are coincident with the center line of the first touch lead a2, so that the widths of the non-hollow-out areas at the left and right ends of the hollow-out area are equal to the distance d. That is, in this further simplified design, the spacing d is equal to one-third of the line width. The width L of each of the first touch lead lines may range from 6 μm to 15 μm according to production requirements. The size R of the first hollow area along a direction perpendicular to the central axis of the first touch lead may range from 1.5 μm to 5 μm. Of course, other dimensions are possible, and the invention is not limited thereto.
In the exemplary embodiment, the first touch lead is hollowed out, so that the resistance values of the first touch leads are kept equal or nearly equal under the condition that the lengths of the first touch leads are different, and the uniformity of the touch sensitivity is kept. In addition, the width of the first touch lead is consistent, so that the greater design complexity and process complexity caused by different widths of the first touch lead are avoided, and the problem of wire breakage caused by over-thin first touch leads is avoided.
Furthermore, since there is a blank routing area, and most of the blank routing area is located in the wiring area of the display panel, in order to prevent crosstalk and improve the signal anti-interference capability, the exemplary embodiment further provides a scheme for inserting a dummy lead in the blank area of the first touch lead. For example:
referring to fig. 3A, fig. 3A is a schematic diagram of another first touch lead design shown in fig. 2A. Unlike fig. 2A, in fig. 3A, a dummy lead line dl (dummy line) is inserted into the blank area of the first touch lead line. In this scheme, the virtual lead DL starts from the end point of the first touch lead in the second direction D2, does not intersect with the first touch lead, extends to the edge of the display panel in the second direction D2, is broken when encountering other first touch leads during the extending process, crosses the first touch lead, and then continues to extend to the edge of the display panel in the second direction D2. The length of the first touch lead is changed according to the position of the first touch lead in the arrangement. Fig. 3B is an enlarged detail view of the first touch lead design in fig. 2B, corresponding to the dashed frame area a in fig. 3A. Fig. 3C is an enlarged detail view of the first touch lead design in fig. 2C, which corresponds to the dashed frame area a in fig. 3A, and those skilled in the art can understand the detailed implementation of the present embodiment with reference to the drawings, and the detailed description thereof is omitted here. In addition, in order to simplify the design, the line width of all the dummy leads DL may be equal to the width d of the first hollow area of the first touch lead, and as can be seen from the above, d may be one third of the line width of the first touch lead. By adding the virtual lead, the anti-interference performance of the first touch lead is increased, and the signal quality is improved.
With continued reference to fig. 2A to 3B, the display panel according to the exemplary embodiment of the invention further includes second touch electrodes B1-B8 and second touch leads B1-B8. The second touch electrodes B1-B8 extend along the second direction D2 and are sequentially arranged along the first direction D1; the second touch electrodes B1-B8 are connected to the first IC 205 via second touch leads B1-B8. For the second touch electrode and the second touch lead, the above-mentioned technical solution of hollowing out the first touch lead to achieve the same impedance is also applicable, and a person skilled in the art can appropriately change and apply the above-mentioned technical solution, and details are not described here.
Fig. 4A-4B are overall structural diagrams of a display panel according to the present invention. Referring to fig. 4A, the display panel 400 may include a first touch electrode 401, a first touch lead 402, a second touch electrode 403, a second touch lead 404, a first integrated circuit 405, an array substrate 406 and a color film substrate 407, which are oppositely disposed. The first touch electrode 401 extends along the first direction D1 and is disposed along the second direction D2, and the second touch electrode 403 extends along the second direction D2 and is disposed along the first direction D1.
The first touch electrode 401 and the first touch lead 402 may be disposed on a color filter substrate 407, and the second touch electrode 403 and the second touch lead 404 may be disposed on an array substrate 406. In addition, in this example embodiment, the color filter substrate 407 may include a surface adjacent to the array substrate 406 and a surface away from the array substrate 406, and the first touch electrode 401 may be disposed in the surface of the color filter substrate 407 away from the array substrate 406. However, it is understood that other arrangements of the first touch electrode 401 and the second touch electrode 403 are also within the scope of the present invention.
The first touch electrode 401 may be a sensing electrode for receiving a touch sensing signal; the first integrated circuit 405 may receive the touch sensing signal collected by the first touch electrode 401, and the touch sensing signal may be used to determine a specific position where a touch occurs. The second touch electrode 403 may be a driving electrode for providing a touch driving signal.
In addition, the array substrate 406 further includes a scan line (not shown) extending along the first direction D1 and disposed along the second direction D2, and a data line (not shown) extending along the second direction D2 and disposed along the first direction D1, i.e., the data line is parallel to the second touch electrode 403. The first direction D1 and the second direction D2 in the present exemplary embodiment can also be interchanged, for example, the array substrate 406 can also include a scan line (not shown) extending along the second direction D2 and disposed along the first direction D1 and a data line (not shown) extending along the first direction D1 and disposed along the second direction D2, that is, the data line is parallel to the first touch electrode 401.
In some optional implementations of the present embodiment, the first integrated circuit 405 may be connected to each of the second touch electrodes 403 through the second touch lead 404. And each second touch electrode can be multiplexed as a common electrode. In the display phase, the first integrated circuit 405 may provide a common voltage signal to the second touch electrode 403 through the second touch lead 404, and the common voltage signal may be matched with a pixel voltage signal in the display panel 400, so that the display panel 400 can perform display. In the touch stage, the first integrated circuit 405 may provide a touch driving signal to the first touch electrode 401 through the first touch lead 402, and the touch driving signal may enable the second touch electrode 403 and the first touch electrode 401 to form a plurality of touch detection points, so that the display panel 400 can perform touch control.
Referring to fig. 4B, in another alternative implementation manner of this embodiment, the display panel 400 may further include a second integrated circuit 408 located on the color film substrate 407. In the overall structure of the display panel shown in fig. 4B, each of the second touch electrodes 403 can be electrically connected to the second integrated circuit 408 through the second touch lead 404. Each of the second touch electrodes 403 may be multiplexed as a common electrode. In the display stage, the second integrated circuit 408 can provide a common voltage signal to the second touch electrode 403 through the second touch lead 404, so that the display panel 400 can perform display. In the touch stage, the second integrated circuit 408 can provide a touch driving signal to the second touch electrode 403 through the second touch lead 404, so that the display panel 400 can perform touch.
It is to be understood that, as shown in fig. 4B, when the display panel 400 includes both the first integrated circuit 405 and the second integrated circuit 408, the first integrated circuit 405 may be disposed on the first flexible circuit board 409 connected to the color film substrate 407, so that the first integrated circuit 405 may be connected to the second integrated circuit 408 through the first flexible circuit board 409. It should be noted that the first integrated circuit 405 may also be disposed on the second flexible circuit board 510, and the second flexible circuit board 510 may be connected to the first flexible circuit board 409 and the second touch lead 404, respectively, so that the first integrated circuit 405 may be connected to the second integrated circuit 408. The first integrated circuit 405 may be a touch chip in the display panel 400, and the second integrated circuit 408 may be a driving chip in the display panel 400.
The display panel may further include some well-known structures, such as a liquid crystal layer disposed between the array substrate 406 and the color filter substrate 407, and spacers for supporting the liquid crystal layer. The liquid crystal layer rotates under the action of an electric field between the pixel electrode and the common electrode, and the display of a picture is realized. In addition, the touch electrode may be a grid electrode, or may be other types of electrodes, which is not limited in the present invention.
Fig. 5 is a schematic view of a touch display device provided in the present invention, wherein the touch display device 10 includes a display panel 20, and the display panel 20 may include the display panel in the above embodiments. The touch display device may be a mobile phone with a touch function, and the structure and function of the display panel in the touch display device are the same as those in the above embodiments, which are not described herein again. It can be understood by those skilled in the art that the touch display device can also be a computer, a television, a wearable smart device, etc. with a touch function, which is not listed here.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (18)
1. A display panel, comprising:
the touch control device comprises a plurality of first touch control electrodes, a plurality of second touch control electrodes and a plurality of touch control units, wherein each first touch control electrode extends along a first direction, the plurality of first touch control electrodes are sequentially arranged along a second direction, and the first direction is intersected with the second direction;
the first touch control electrodes are connected with the first integrated circuit through the first touch control leads;
the virtual lead takes the end point of the first touch lead in the second direction as a starting point and extends to the edge of the display panel in the second direction; the virtual lead crosses over a first touch lead on the extension path;
the at least one first touch lead is provided with at least one first hollow area, the area of the first hollow area of different first touch leads is in negative correlation with the length of the first touch lead, and the relative deviation between the resistance values of any two first touch leads is less than or equal to 20%.
2. The display panel according to claim 1, wherein the resistance values of the first touch leads are all equal.
3. The display panel according to claim 1, wherein the first touch leads have equal widths.
4. The display panel according to claim 3, wherein the total area of the first hollow area of each of the plurality of first touch leads is inversely related to the length of the first touch lead.
5. The display panel according to claim 4, wherein the first hollow area of the first touch lead is a polygonal, circular or elliptical structure.
6. The display panel according to claim 4, wherein the first hollow areas of the first touch leads are in the same pattern, and the density of the first hollow areas of each of the first touch leads is inversely related to the length of the first touch lead.
7. The display panel according to claim 4, wherein the first hollow areas of the same first touch lead have the same pattern.
8. The display panel according to claim 7, wherein the first hollow areas on the first touch leads are equally spaced.
9. The display panel according to any one of claims 6 to 8, wherein the first hollow area is rectangular and is symmetrical with respect to a central axis of the first touch lead;
the first hollow areas on the first touch leads are equal in size along a direction perpendicular to a central axis of the first touch lead.
10. The display panel according to claim 1, wherein the width L of the first touch lead is in a range of 6 μm to 15 μm.
11. The display panel according to claim 10, wherein a dimension R of the first hollow area along a direction perpendicular to a central axis of the first touch lead is in a range of 1.5 μm to 5 μm.
12. The display panel according to claim 1, wherein at least two of the first touch leads have different widths.
13. The display panel according to claim 1, wherein the first hollow area of the same first touch lead comprises at least two different patterns.
14. The display panel according to claim 1,
the display panel comprises an array substrate and a color film substrate which are oppositely arranged;
the color film substrate comprises the first touch electrode, and the first touch electrode is positioned on one side of the color film substrate, which is far away from the array substrate;
the array substrate further comprises a plurality of second touch electrodes, each second touch electrode extends along the second direction, and the plurality of second touch electrodes are arranged along the first direction;
the array substrate further comprises a scanning line extending along the first direction and arranged along the second direction and a data line extending along the second direction and arranged along the first direction, and the plurality of second touch electrodes are parallel to the data line.
15. The display panel according to claim 14,
the first touch control electrode is a touch control induction electrode, and the first integrated circuit receives touch control induction signals collected by the touch control induction electrode;
the second touch electrode is a touch driving electrode.
16. The display panel according to claim 15, wherein each of the second touch electrodes is reused as a common electrode in a display stage;
in a display stage, the first integrated circuit provides a common voltage signal for the second touch electrode;
in a touch control stage, the first integrated circuit provides a touch control driving signal to the second touch control electrode.
17. The display panel according to claim 15, wherein each of the second touch electrodes is reused as a common electrode in a display phase, and the display panel further comprises a second integrated circuit;
in a display stage, the second integrated circuit provides a common voltage signal for the second touch electrode;
in a touch control stage, the second integrated circuit provides a touch control driving signal to the second touch control electrode.
18. A touch display device, characterized in that the touch display device comprises the display panel of any one of claims 1-17.
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| CN201610789580.6A CN106371666B (en) | 2016-08-31 | 2016-08-31 | Display panel and touch display device |
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| CN201610789580.6A CN106371666B (en) | 2016-08-31 | 2016-08-31 | Display panel and touch display device |
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| CN106371666B true CN106371666B (en) | 2020-04-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107194321B (en) * | 2017-04-27 | 2020-04-21 | Oppo广东移动通信有限公司 | Display screen, display device and mobile terminal |
| CN107168574A (en) * | 2017-05-10 | 2017-09-15 | 京东方科技集团股份有限公司 | A kind of OLED touch-control display panels, touch control display apparatus |
| CN107622990B (en) * | 2017-10-13 | 2021-04-06 | 京东方科技集团股份有限公司 | Touch substrate, manufacturing method thereof and display device |
| CN107831961B (en) * | 2017-10-25 | 2021-03-23 | 昆山龙腾光电股份有限公司 | Touch lead structure and manufacturing method thereof |
| CN107894863B (en) * | 2017-11-30 | 2021-09-28 | 武汉天马微电子有限公司 | Display device and electronic equipment |
| JP2019113656A (en) * | 2017-12-22 | 2019-07-11 | シャープ株式会社 | Liquid crystal panel |
| KR102607494B1 (en) * | 2018-07-06 | 2023-12-01 | 삼성디스플레이 주식회사 | Input sensing unit and display device comprising the input sensing unit |
| CN111625120A (en) * | 2020-05-07 | 2020-09-04 | 武汉华星光电技术有限公司 | Display panel |
| CN111766973B (en) | 2020-06-11 | 2022-02-01 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
| CN113064507A (en) * | 2021-03-04 | 2021-07-02 | 武汉华星光电半导体显示技术有限公司 | Touch panel and electronic equipment |
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