CN109491544B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN109491544B CN109491544B CN201811427419.XA CN201811427419A CN109491544B CN 109491544 B CN109491544 B CN 109491544B CN 201811427419 A CN201811427419 A CN 201811427419A CN 109491544 B CN109491544 B CN 109491544B
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- touch
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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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- 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
Abstract
The invention provides a touch display panel and a display device, wherein the touch display panel comprises: a plurality of touch electrode blocks; a plurality of touch electrode lines; each touch electrode block is electrically connected with at least one touch electrode wire; different touch electrode blocks are connected with different touch electrode wires; the edge of the display area of the touch display panel comprises a first special-shaped edge; the plurality of touch electrode blocks comprise a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode block is the touch electrode block closest to the first special-shaped edge; the second touch electrode block is other touch electrode blocks except the first touch electrode block; the overlapping area of the first touch electrode block and the plurality of touch electrode lines is a first area; the overlapping area of the second touch electrode block and the plurality of touch electrode lines is a second area; the first area is greater than the second area. The invention improves the touch sensitivity.
Description
Technical Field
Embodiments of the present invention relate to display technologies, and in particular, to a touch display panel and a display device.
Background
At present, a display panel with a touch function is widely applied to various display products such as mobile phones, tablet computers, information query machines in public halls and the like as an information input tool. Therefore, the user can operate the electronic equipment by only touching the mark on the display panel with fingers, dependence of the user on other equipment (such as a keyboard, a mouse and the like) is eliminated, and man-machine interaction is simpler.
In order to meet the market demand, a special-shaped display panel is provided, the edge of the special-shaped display panel is not formed by a straight line, and the special-shaped display panel also comprises a curve edge. The specially shaped display panel is, for example, a display panel having a rounded chamfer. In order to adapt to the curve edge of the irregular display panel, the display area of the display panel and the touch electrode need to be designed correspondingly, so that the area of the touch electrode block closest to the curve edge of the display panel is smaller than the areas of other touch electrode blocks, and the touch sensitivity of the display panel is low.
Disclosure of Invention
The embodiment of the invention provides a touch display panel and a display device, which are used for improving touch sensitivity.
In a first aspect, an embodiment of the present invention provides a touch display panel, including:
a plurality of touch electrode blocks;
a plurality of touch electrode lines; each touch electrode block is electrically connected with at least one touch electrode wire; different touch electrode blocks are connected with different touch electrode wires;
the edge of the display area of the touch display panel comprises a first special-shaped edge; the plurality of touch electrode blocks comprise a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode block is the touch electrode block closest to the first special-shaped edge; the second touch electrode block is other touch electrode blocks except the first touch electrode block;
the overlapping area of the first touch electrode block and the plurality of touch electrode lines is a first area; the overlapping area of the second touch electrode block and the plurality of touch electrode lines is a second area; the first area is greater than the second area.
In a second aspect, an embodiment of the present invention provides a display device, including the touch display panel of the first aspect.
The touch display panel of the embodiment of the invention comprises a plurality of touch electrode blocks, wherein most of the touch electrode blocks are second touch electrode blocks, and the small part of the touch electrode blocks are first touch electrode blocks. The first touch electrode block is adjacent to the first special-shaped edge of the display area, and the second touch electrode block is other touch electrode blocks except the first touch electrode block. The area of the graph formed by the outer edges of the first touch electrode blocks is smaller than the area of the graph formed by the outer edges of the second touch electrode blocks. According to the embodiment of the invention, the overlapping area of the first touch electrode block and the plurality of touch electrode wires is larger than the overlapping area of the second touch electrode block and the plurality of touch electrode wires, so that the difference between the area of the first touch electrode block and the area of the second touch electrode block can be reduced, and the touch sensitivity of the touch display panel is improved. And because the number of the first touch electrode blocks occupies a smaller proportion in all the touch electrode blocks, the parasitic capacitance between the touch electrode line and the touch electrode blocks cannot be obviously increased, and the load on the touch electrode line cannot be obviously increased.
Drawings
Fig. 1 is a schematic top view of a touch display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the area S1 in FIG. 1;
FIG. 3 is an enlarged view of the area S2 in FIG. 2;
FIG. 4 is an enlarged view of the area S3 in FIG. 2;
FIG. 5 is a schematic view of another enlarged structure of the area S1 in FIG. 1;
FIG. 6 is an enlarged view of the area S4 in FIG. 5;
FIG. 7 is a schematic cross-sectional view taken along AA' in FIG. 6;
FIG. 8 is an enlarged view of the area S5 in FIG. 5;
FIG. 9 is a schematic cross-sectional view taken along line BB' in FIG. 8;
FIG. 10 is a schematic cross-sectional view taken along line CC' of FIG. 8;
fig. 11 is a schematic top view of another touch display panel according to an embodiment of the present invention;
fig. 12 is a schematic top view of another touch display panel according to an embodiment of the present invention;
fig. 13 is a schematic top view of another touch display panel according to an embodiment of the invention;
fig. 14 is a schematic top view of another touch display panel according to an embodiment of the invention;
fig. 15 is a schematic top view of another touch display panel according to an embodiment of the invention;
fig. 16 is a top view of a partial structure of a touch display panel according to an embodiment of the present invention;
FIG. 17 is a schematic view of the structure taken along the section DD' in FIG. 16;
fig. 18 is a schematic structural diagram of a touch 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 further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic top view of a touch display panel according to an embodiment of the present invention, and fig. 2 is an enlarged schematic structural view of an area S1 in fig. 1, referring to fig. 1 and fig. 2, the touch display panel includes a plurality of touch electrode blocks 10 and a plurality of touch electrode lines 20. Each touch electrode block 10 is electrically connected to at least one touch electrode line 20, and different touch electrode blocks 10 are connected to different touch electrode lines 20. The display area edge P of the touch display panel includes a first irregular edge P1. The area surrounded by the display area edge P is the display area of the touch display panel. The display area edge P includes a plurality of straight line edges and at least one curved line edge, and the first shaped edge P1 is a curved line edge among the display area edges P. The plurality of touch electrode blocks 10 include a plurality of first touch electrode blocks 11 and a plurality of second touch electrode blocks 12, that is, the touch electrode blocks 10 include two types, i.e., a first touch electrode block 11 and a second touch electrode block 12. The first touch electrode blocks 11 are the touch electrode blocks 10 closest to the first special-shaped edge P1, no other touch electrode block 10 is arranged between one first special-shaped edge P1 and the first touch electrode block 11 closest to the first special-shaped edge, the second touch electrode blocks 12 are the other touch electrode blocks 10 except the first touch electrode block 11, and the first touch electrode blocks 11 are arranged between the second touch electrode blocks 12 and the first special-shaped edge P1. The overlapping area of the first touch electrode block 11 and the plurality of touch electrode lines 20 is a first area, the overlapping area of the second touch electrode block 12 and the plurality of touch electrode lines 20 is a second area, and the first area is larger than the second area.
Exemplarily, referring to fig. 1 and 2, the outer edge of the first touch electrode block 11 also includes a curved edge, and the curved edge of the first touch electrode block 11 is disposed corresponding to the first irregularly shaped edge P1, the outer edge of the second touch electrode block 12 includes only a straight edge, and the outer edge of the second touch electrode block 12 is rectangular in shape. The area of the pattern surrounded by the outer edges of the first touch electrode blocks 11 is smaller than the area of the pattern surrounded by the outer edges of the second touch electrode blocks 12. Therefore, the area of the hollow portion in the first touch electrode 11 is smaller than the area of the hollow portion in the second touch electrode 12, so that the difference between the area of the first touch electrode 11 and the area of the second touch electrode 12 can be reduced, and the touch sensitivity of the touch display panel can be improved. In the embodiments of the present invention, the hollow areas of the touch electrode blocks 10 (i.e., the first touch electrode block 11 and the second touch electrode block 12) refer to areas of hollow areas at overlapping positions of the touch electrode blocks 10 and the touch electrode lines 20.
The touch display panel of the embodiment of the invention comprises a plurality of touch electrode blocks, wherein most of the touch electrode blocks are second touch electrode blocks, and the small part of the touch electrode blocks are first touch electrode blocks. The first touch electrode block is adjacent to the first special-shaped edge of the display area, and the second touch electrode block is other touch electrode blocks except the first touch electrode block. The area of the graph formed by the outer edges of the first touch electrode blocks is smaller than the area of the graph formed by the outer edges of the second touch electrode blocks. According to the embodiment of the invention, the overlapping area of the first touch electrode block and the plurality of touch electrode wires is larger than the overlapping area of the second touch electrode block and the plurality of touch electrode wires, so that the difference between the area of the first touch electrode block and the area of the second touch electrode block can be reduced, and the touch sensitivity of the touch display panel is improved. And because the number of the first touch electrode blocks occupies a smaller proportion in all the touch electrode blocks, the parasitic capacitance between the touch electrode line and the touch electrode blocks cannot be obviously increased, and the load on the touch electrode line cannot be obviously increased.
Fig. 3 is an enlarged schematic structural view of an area S2 in fig. 2, and fig. 4 is an enlarged schematic structural view of an area S3 in fig. 2, and referring to fig. 2, fig. 3 and fig. 4, the first touch electrode block 11 includes the first hollow area 31. The second touch electrode block 12 includes a second hollow area 32. The extending direction of the first hollow area 31 and the extending direction of the second hollow area 32 are both parallel to the extending direction of the touch electrode line 20. The area of the first hollow area 31 is smaller than the area of the second hollow area 32. The first hollow areas 31 overlap the touch electrode lines 20, and the second hollow areas 32 overlap the touch electrode lines 20. It should be noted that the hollow area in the first touch electrode block 11 shown in fig. 2 is schematically shown from a macro level, the first hollow area 31 shown in fig. 3 is schematically shown from a micro level, the hollow area in the second touch electrode block 12 shown in fig. 2 is schematically shown from a macro level, and the second hollow area 32 shown in fig. 4 is schematically shown from a micro level. One touch electrode block 10 tends to cover a plurality of sub-pixels, and thus, the macro level herein refers to the magnitude of the touch electrode block 10, and the micro level refers to the magnitude of the sub-pixels.
Alternatively, referring to fig. 2, 3 and 4, the touch display panel includes a plurality of data lines 42 and a plurality of scan lines 41, the plurality of data lines 42 and the plurality of scan lines 41 intersect to form a plurality of pixel units 43, each pixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of the touch electrode lines 20 and the data lines 42 are the same, and the first hollow areas 31 and the second hollow areas 32 are located between two adjacent scan lines 41. The overlapping positions of the touch electrode blocks 10 (i.e., the first touch electrode block 11 and the second touch electrode block 12) and the scanning lines 41 have no hollow area. Since the first hollow-out areas 31 and the second hollow-out areas 32 are located between two adjacent scanning lines 41, the scanning lines 41 arranged along the extending direction of the touch electrode line 20 divide the hollow-out area on the first touch electrode block 11 into a plurality of discrete first hollow-out areas 31, and the scanning lines 41 arranged along the extending direction of the touch electrode line 20 divide the hollow-out area on the second touch electrode block 12 into a plurality of discrete second hollow-out areas 32. Since the material (e.g., the indium tin oxide material) of the first touch electrode block 11 exists between two adjacent first hollow areas 31, the material of the first touch electrode block 11 existing between two adjacent first hollow areas 31 can enhance the mechanical strength of the first touch electrode block 11. Since the material (e.g., the indium tin oxide material) of the second touch electrode block 12 exists between two adjacent second hollow areas 32, the material of the second touch electrode block 12 existing between two adjacent second hollow areas 32 can enhance the mechanical strength of the second touch electrode block 12.
Optionally, referring to fig. 2, fig. 3 and fig. 4, in a direction perpendicular to the extending direction of the touch electrode line 20, the width of the first hollow area 31 is D1, and the width of the first hollow area 31 is a maximum distance between any two points on the edge of the first hollow area 31 along the direction perpendicular to the extending direction of the touch electrode line 20. In the extending direction perpendicular to the touch electrode line 20, the width of the second hollow area 32 is D2, and the width of the second hollow area 32 is the maximum distance between any two points on the edge of the second hollow area 32 along the extending direction perpendicular to the touch electrode line 20. D1 and D2 satisfy: d1 ═ D2. In the extending direction of the touch electrode line 20, the length of the first hollow area 31 is H1, and the length of the first hollow area 31 is the maximum distance between any two points on the edge of the first hollow area 31 in the extending direction of the touch electrode line 20. In the extending direction of the touch electrode line 20, the length of the second hollow area 32 is H2, and the length of the second hollow area 32 is the maximum distance between any two points on the edge of the second hollow area 32 in the extending direction of the touch electrode line 20. H1 and H2 satisfy: h1 < H2. It should be noted that the shapes of the first hollow area 31 and the second hollow area 32 shown in the embodiment of the present invention are only an example, and in other embodiments, the first hollow area 31 and the second hollow area may also have shapes such as an ellipse, a diamond, and the like, as long as the area of the first hollow area 31 is smaller than the area of the second hollow area 32.
Fig. 5 is another schematic enlarged structure diagram of an area S1 in fig. 1, fig. 6 is a schematic enlarged structure diagram of an area S4 in fig. 5, fig. 7 is a schematic cross-sectional structure along AA 'in fig. 6, fig. 8 is a schematic enlarged structure diagram of an area S5 in fig. 5, and fig. 9 is a schematic cross-sectional structure along BB' in fig. 8, referring to fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, where a hollow area is not located at an overlapping position of the first touch electrode block 11 and the touch electrode line 20, and a hollow area is located at an overlapping position of the second touch electrode block 12 and the touch electrode line 20. The area of the hollow in the first touch electrode block 11 is smaller than the area of the hollow in the second touch electrode block 12, so that the difference between the area of the first touch electrode block 11 and the area of the second touch electrode block 12 can be reduced, and the touch sensitivity of the touch display panel is improved.
Optionally, referring to fig. 6 and 7, a position of a vertical projection of the plurality of touch electrode lines 20 overlapped with the first touch electrode block 11 on a plane where the first touch electrode block 11 is located is a first area 51, and the first touch electrode block 11 has no hollow area in the first area 51. Referring to fig. 8 and 9, a position of a vertical projection of the at least one touch electrode line 20 overlapped with the second touch electrode block 12 on a plane where the second touch electrode block 12 is located is a second area 52, and the second touch electrode block 12 is provided with a third hollow area 33 at the second area 52. The third hollow area 33 in fig. 8 may be the same as the second hollow area 32 in fig. 4, and the third hollow area 33 in fig. 8 may also be different from the second hollow area 32 in fig. 4. In the implementation of the present invention, since there is no hollow area at the overlapping position of the first touch electrode block 11 and the touch electrode line 20, the material of the first touch electrode block 11 is retained to the maximum, so that the area of the first touch electrode block 11 is increased to the maximum, the difference between the area of the first touch electrode block 11 and the area of the second touch electrode block 12 is reduced, and the touch sensitivity of the touch display panel is improved. It should be noted that the hollow-out area in the second touch electrode block 12 shown in fig. 5 is schematically shown from a macro scale, and the third hollow-out area 33 shown in fig. 8 is schematically shown from a micro scale.
Optionally, as shown in fig. 5, 8, and 9, a third hollow-out area 33 exists at a position where a vertical projection of any one of the touch electrode lines 20 overlapped with the second touch electrode block 12 on a plane where the second touch electrode block 20 is located. Since the second touch electrode block 12 is hollowed out in the overlapping region with any touch electrode line 20, the parasitic capacitance between the touch electrode line 20 and the second touch electrode block 12 is reduced, and the load on the touch electrode line 20 is reduced.
Alternatively, referring to fig. 6 and 8, the touch display panel includes a plurality of data lines 42 and a plurality of scan lines 41, the plurality of data lines 42 and the plurality of scan lines 41 intersect to form a plurality of pixel units 43, each pixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of the touch electrode lines 20 and the data lines 42 are the same, and the third hollow areas 33 are located between two adjacent scanning lines 41. The second touch electrode block 12 has no hollow area at the overlapping position with the scanning line 41. Since the third hollow-out areas 33 are located between two adjacent scanning lines 41, the scanning lines 41 arranged along the extending direction of the touch electrode line 20 divide the hollow-out area on the second touch electrode block 12 into a plurality of discrete third hollow-out areas 33. Since the material (e.g., an indium tin oxide material) of the second touch electrode block 12 exists between two adjacent third hollow areas 33, the material of the second touch electrode block 12 existing between two adjacent third hollow areas 33 can enhance the mechanical strength of the second touch electrode block 12.
Alternatively, referring to fig. 6, 7, 8 and 9, the touch display panel includes a plurality of data lines 42 and a plurality of scan lines 41, the plurality of data lines 42 and the plurality of scan lines 41 intersect to form a plurality of pixel units 43, each pixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of the touch electrode lines 20 and the data lines 42 are the same, and the touch electrode lines 20 and the data lines 42 are disposed on the same layer. The touch electrode lines 20 and the data lines 42 are arranged on the same layer, and the touch electrode lines 20 and the data lines 42 can be made of the same material and formed in the same process, so that the process is saved.
Alternatively, referring to fig. 1 to 9, the touch electrode block 10 (i.e., the first touch electrode block 11 and the second touch electrode block 12) is multiplexed as a common electrode. In the display stage, a display signal can be applied to the touch electrode block 10, so that the touch display panel realizes light emitting display; in the touch stage, a touch signal may be applied to the touch electrode block 10, so that the touch display panel realizes touch position detection. In the embodiment of the invention, the touch electrode block 10 is reused as the common electrode, on one hand, as manufacturing processes do not need to be respectively arranged for the touch electrode block and the common electrode, the process is saved; on the other hand, the thickness of the touch display panel can be reduced, so that the touch display panel becomes thinner.
Exemplarily, referring to fig. 1 to 9, the touch electrode block 10 (i.e., the first touch electrode block 11 and the second touch electrode block 12) is multiplexed as a common electrode. The plurality of touch electrode blocks 10 are arranged on the same layer and are arranged in an array manner, the touch electrode blocks 10 are self-capacitance touch electrode blocks, each self-capacitance touch electrode block respectively forms a capacitor with, for example, a zero potential energy point ground, when a finger touches or is close to the display panel, the capacitance value at the touch position is increased, and then when touch detection is performed, the position of the touch point can be determined by detecting the change of the corresponding capacitance value. In other embodiments, the touch electrode block 10 may also be a mutual capacitance type touch electrode block.
Exemplarily, referring to fig. 6, 7, 8 and 9, the touch display panel further includes an opposite substrate 82 and color resistance layers 84 located on one side of the opposite substrate 82 close to the substrate 60, a black matrix 83 is further disposed between two adjacent color resistance layers 84, and a vertical projection of the data lines 42 and the touch electrode lines 20 on the opposite substrate 82 is located within a vertical projection of the black matrix 83 on the opposite substrate 82. The touch display panel further includes a liquid crystal layer 81, and the liquid crystal layer 81 is located between the substrate base plate 60 and the opposite base plate 82. The liquid crystal layer 81 includes a plurality of liquid crystal molecules. In the embodiments of the present invention, the liquid crystal display panel is taken as an example, but not limited thereto, and in other embodiments, the touch display panel may also be an organic light emitting display panel.
Fig. 10 is a schematic cross-sectional structure view along CC' in fig. 8, referring to fig. 5, 8 and 10, the touch electrode line 20 includes a touch electrode line main body portion 21 and a touch electrode line protrusion portion 22, an extending direction of the touch electrode line main body portion 21 is an extending direction of the touch electrode line 20, the touch electrode line protrusion portion 22 is electrically connected to the touch electrode line main body portion 21, the touch electrode line protrusion portion 22 and the touch electrode line main body portion 21 may be made of the same material and integrally formed in the same process, and the touch electrode line protrusion portion 22 protrudes from the touch electrode line main body portion 21 toward the pixel electrode 44. The touch electrode line protrusion 22 is electrically connected to the corresponding touch electrode block 10 (exemplified by the second touch electrode block 12 in fig. 10) through the connection hole 70, so as to electrically connect the touch electrode block 10 to the touch electrode line 20.
Alternatively, referring to fig. 1 to 9, the touch electrode block 10 (including the first touch electrode block 11 and the second touch electrode block 12) is provided with a fourth hollow area 34 in an area overlapping with the pixel electrode 44. The fourth hollow area 34 overlaps the pixel electrode 44, and the fourth hollow area 34 does not overlap the touch electrode line 20. The touch electrode block 10 is reused as a common electrode, and the touch electrode block 10 provided with the fourth hollow area 34 may form a transverse electric field with the pixel electrode 44 and drive the liquid crystal molecules to rotate. In the embodiments of the present invention, the hollow area of the touch electrode block 10 does not include the area of the fourth hollow area 34. In other embodiments, the fourth hollow-out region 34 may not be disposed in the area where the touch electrode block 10 overlaps the pixel electrode 44.
Fig. 11 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 11, each first touch electrode block 11 is electrically connected to at least two touch electrode lines 20, and each second touch electrode block 12 is electrically connected to at least one touch electrode line 20. Since the overlapping area of the first touch electrode block 11 and the plurality of touch electrode lines 20 is a first area, the overlapping area of the second touch electrode block 12 and the plurality of touch electrode lines 20 is a second area, the first area is larger than the second area, the parasitic capacitance of the first touch electrode block 11 and the touch electrode lines 20 is larger than the parasitic capacitance of the second touch electrode block 12 and the touch electrode lines 20, the first touch electrode block 11 increases the load on the touch electrode lines 20 more, and the second touch electrode block 12 increases the load on the touch electrode lines 20 less. In the embodiment of the present invention, each first touch electrode block 11 is electrically connected to at least two touch electrode lines 20, the at least two touch electrode lines 20 are connected in parallel and provide a touch signal or a display signal for the same first touch electrode block 11, and the at least two parallel touch electrode lines 20 have a smaller resistance relative to a single touch electrode line 20, so that a load increase on the touch electrode lines 20 caused by the first touch electrode block 11 is reduced.
Fig. 12 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 12, each touch electrode line 20 is electrically connected to a corresponding touch electrode block 10 through a plurality of connection holes 70. Since the touch electrode block 10 has a certain resistance, the touch signals or display signals on the touch electrode line 20 are transmitted to different parts of the same touch electrode block 10 by a connecting hole 70 along different paths, and the resistances are different. In the embodiment of the present invention, each touch electrode line 20 is electrically connected to the corresponding touch electrode block 10 through the plurality of connection holes 70, and the touch signals or the display signals on the touch electrode lines 20 are transmitted to different parts of the same touch electrode block 10 through the plurality of connection holes 70, so that the resistances of the touch signals or the display signals transmitted to different parts of the same touch electrode block 10 are equalized, thereby improving the touch sensitivity. When the touch electrode block 10 is multiplexed as a common electrode, the arrangement can also make a plurality of sub-pixels covered by the same touch electrode block 10 have the same common voltage, so that the display of the plurality of sub-pixels is more uniform.
Alternatively, referring to fig. 1, 11 and 12, the first touch electrode block 11 is located at an end of a row of touch electrode blocks 10 arranged perpendicular to an extending direction of the touch electrode lines 20. In a row of touch electrode blocks 10 arranged along the extending direction of the touch electrode line 20, the maximum distance between the touch electrode line 20 electrically connected to the first touch electrode block 11 and the display center line L of the touch display panel is L1. The minimum distance between the touch electrode line 20 electrically connected to the second touch electrode block 12 and the display center line L of the touch display panel is L2. The touch display panel displays that the central line L is parallel to the extending direction of the touch electrode line 20, and L1< L2. Each touch electrode line 20 may be electrically connected to a corresponding touch electrode block 10 through a connection hole 70. Perpendicular to the extending direction of the touch electrode line 20, the distance between the perpendicular projection of the connecting hole 70 on the first touch electrode block 11 and the first special-shaped edge P1 is relatively long, so that the adverse effect of the shape of the first special-shaped edge P1 on the transmission of the touch signal or the display signal is avoided, the resistance of the touch signal or the display signal transmitted to different parts of the same first touch electrode block 11 is balanced, and the touch sensitivity is improved.
Fig. 13 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 13, each touch electrode line 20 is electrically connected to the corresponding touch electrode block 10 through a connection hole 70, the connection holes 70 on two sides of the display center line L of the touch display panel are symmetrical with respect to the display center line L of the touch display panel, and the display center line L of the touch display panel is parallel to the extending direction of the touch electrode line 20. Exemplarily, referring to fig. 13, one connection hole 70 is located at one side of the display center line L of the touch display panel, and one connection hole 70 is located at the other side of the display center line L of the touch display panel and is axisymmetric with respect to the display center line L of the touch display panel.
Alternatively, referring to fig. 1, 11, 12 and 13, the number of touch electrode lines 20 overlapping one first touch electrode block 11 is M, and the number of touch electrode lines 20 overlapping one second touch electrode block 12 is N, where M is N (exemplary M is N is 6 in the embodiment of the present invention). The larger the number of the touch electrode lines 20 overlapped with the touch electrode block 10 is, the larger the parasitic capacitance generated by the overlap of the touch electrode block 10 and the touch electrode lines 20 is, the larger the load on the touch electrode lines 20 is, and likewise, the larger the load on the touch electrode block 10 is. In the embodiment of the present invention, by setting the number of the touch electrode lines 20 overlapped with one first touch electrode block 11 to be equal to the number of the touch electrode lines 20 overlapped with one second touch electrode block 12, the load on the first touch electrode block 11 is consistent with the load on the second touch electrode block 12, thereby improving the touch sensitivity. When the touch electrode block 10 is multiplexed as a common electrode, the arrangement can also make a plurality of sub-pixels covered by the same touch electrode block 10 have the same common voltage, so that the display of the plurality of sub-pixels is more uniform.
Fig. 14 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 14, the touch display panel further includes a substrate 60, and the touch electrode blocks 10 and the touch electrode lines 20 are located on one side of the substrate 60. The touch electrode line 20 may be located between the substrate base plate 60 and the touch electrode block 10. In the light emitting direction away from the touch display panel, the substrate base plate 60 includes a first corner 61, a second corner 62, a third corner 63 and a fourth corner 64 which are arranged clockwise, and the first corner 61 and the second corner 62 are arc-shaped corners. The arc corners may be, for example, arc chamfers. The corner in the embodiment of the present invention refers to a connection portion between adjacent two straight edges of the substrate base plate 60.
Optionally, the touch display panel may further include an integrated circuit 90, the touch electrode line 20 is electrically connected to the integrated circuit 90, and the integrated circuit 90 provides a touch signal to the touch electrode block 10 electrically connected to the touch electrode line 20 through the touch electrode line 20. When the touch electrode block 10 is reused as a common electrode, the integrated circuit 90 may further provide a display signal to the touch electrode block 10 electrically connected to the touch electrode line 20 through the touch electrode line 20. The integrated circuit 90 may be located between the third corner 63 and the fourth corner 64, the integrated circuit 90 being located on a side of the display area remote from the first corner 61 and the second corner 62.
Fig. 15 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 15, the touch display panel further includes a substrate 60, and the touch electrode blocks 10 and the touch electrode lines 20 are located on one side of the substrate 60. The touch electrode line 20 may be located between the substrate base plate 60 and the touch electrode block 10. In the light emitting direction away from the touch display panel, the substrate base plate 60 includes a fifth corner 65, a sixth corner 66, a seventh corner 67 and an eighth corner 68 which are arranged clockwise, and the fifth corner 65 and the sixth corner 66 are arc-shaped corners. The arc corners may be, for example, arc chamfers. The corner in the embodiment of the present invention refers to a connection portion between adjacent two straight edges of the substrate base plate 60. The base substrate 60 further comprises a second shaped edge P2, the second shaped edge P2 being the portion of the base substrate 60 between the fifth corner 65 and the sixth corner 66 that is convex towards the display area. The display area edge P is convex toward the display area at the second contour P2 and forms another first contour P1 in conformity with the shape of the second contour P2. The touch display panel may further include an integrated circuit 90, the touch electrode line 20 is electrically connected to the integrated circuit 90, and the integrated circuit 90 provides a touch signal to the touch electrode block 10 electrically connected to the touch electrode line 20 through the touch electrode line 20. When the touch electrode block 10 is reused as a common electrode, the integrated circuit 90 may further provide a display signal to the touch electrode block 10 electrically connected to the touch electrode line 20 through the touch electrode line 20. The integrated circuit 90 is located between the seventh corner 67 and the eighth corner 68, and the integrated circuit 90 is located on a side of the display area remote from the fifth corner 65 and the sixth corner 66.
Fig. 16 is a partial structure plan view of a touch display panel according to an embodiment of the invention, and fig. 17 is a schematic cross-sectional structure view along DD' in fig. 16, in which a touch electrode block 10 (the touch electrode block 10 is exemplified as the first touch electrode block 12 in fig. 16 and fig. 17) is located on a side of the opposite substrate 82 close to the substrate 60, and the touch electrode block 10 is located between the opposite substrate 82 and the liquid crystal layer. The touch electrode block 10 is not provided with the fourth hollow area 34 in the area overlapped with the pixel electrode 44. The touch electrode block 10 is reused as a common electrode, and the touch electrode block 10 and the pixel electrode 44 may form a longitudinal electric field and drive the liquid crystal molecules to rotate.
The embodiment of the invention also provides a display device. Fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 18, the display device includes any one of the touch display panels 100 according to the embodiment of the present invention. The display device can be a mobile phone, a tablet computer, an intelligent wearable device and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (18)
1. A touch display panel, comprising:
a plurality of touch electrode blocks;
a plurality of touch electrode lines; each touch electrode block is electrically connected with at least one touch electrode wire; different touch electrode blocks are connected with different touch electrode wires;
the edge of the display area of the touch display panel comprises a first special-shaped edge; the plurality of touch electrode blocks comprise a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode block is the touch electrode block closest to the first special-shaped edge; the second touch electrode block is other touch electrode blocks except the first touch electrode block;
the overlapping area of the first touch electrode block and the plurality of touch electrode lines is a first area; the overlapping area of the second touch electrode block and the plurality of touch electrode lines is a second area; the first area is greater than the second area; the hollow area in the first touch electrode block is smaller than that in the second touch electrode block.
2. The touch display panel according to claim 1, wherein the first touch electrode block comprises a first hollow area; the second touch electrode block comprises a second hollow area; the extending direction of the first hollow-out area and the extending direction of the second hollow-out area are both parallel to the extending direction of the touch electrode wire;
the area of the first hollow-out area is smaller than that of the second hollow-out area;
the first hollow area is overlapped with the touch control electrode wire, and the second hollow area is overlapped with the touch control electrode wire.
3. The touch display panel according to claim 2, wherein the touch display panel comprises a plurality of data lines and a plurality of scan lines, and the plurality of data lines and the plurality of scan lines intersect to form a plurality of pixel units;
the touch electrode wires and the data wires are consistent in extending direction, and the first hollow-out areas and the second hollow-out areas are located between every two adjacent scanning lines.
4. The touch display panel of claim 3,
in the extending direction perpendicular to the touch electrode wire, the width of the first hollow area is equal to that of the second hollow area;
and in the extending direction of the touch electrode wire, the length of the first hollow area is smaller than that of the second hollow area.
5. The touch display panel of claim 1,
the position of the vertical projection of the touch electrode lines overlapped with the first touch electrode block on the plane where the first touch electrode block is located is a first area, and the first touch electrode block has no hollow area in the first area;
the position of the vertical projection of the at least one touch electrode line overlapped with the second touch electrode block on the plane where the second touch electrode block is located is a second area, and a third hollow area is arranged on the second area of the second touch electrode block.
6. The touch display panel according to claim 5, wherein the third hollow-out region exists at a position where a vertical projection of any one of the touch electrode lines overlapped with the second touch electrode block on a plane where the second touch electrode block is located.
7. The touch display panel according to claim 5, wherein the touch display panel comprises a plurality of data lines and a plurality of scan lines, and the plurality of data lines and the plurality of scan lines intersect to form a plurality of pixel units;
the extending directions of the touch electrode wires and the data lines are consistent, and the third hollow-out area is located between two adjacent scanning lines.
8. The touch display panel according to claim 1, wherein each of the first touch electrode blocks is electrically connected to at least two of the touch electrode lines, and each of the second touch electrodes is electrically connected to at least one of the touch electrode lines.
9. The touch display panel according to claim 1, wherein each of the touch electrode lines is electrically connected to the corresponding touch electrode block through a plurality of connection holes.
10. The touch display panel according to claim 1, wherein the first touch electrode block is located at an end of a row of touch electrode blocks arranged in a direction perpendicular to an extending direction of the touch electrode lines; in a row of the touch electrode blocks arranged in the extending direction of the touch electrode lines, the maximum distance between the touch electrode lines electrically connected with the first touch electrode block and the display center line of the touch display panel is L1; the minimum distance between the touch electrode line electrically connected with the second touch electrode block and the display center line of the touch display panel is L2;
the display center line of the touch display panel is parallel to the extending direction of the touch electrode wire; l1< L2.
11. The touch display panel according to claim 1, wherein each of the touch electrode lines is electrically connected to the corresponding touch electrode block through a connection hole;
the connecting holes on two sides of the display center line of the touch display panel are symmetrical about the display center line of the touch display panel; the display center line of the touch display panel is parallel to the extending direction of the touch electrode line.
12. The touch display panel according to claim 1, wherein the touch display panel comprises a plurality of data lines and a plurality of scan lines, and the plurality of data lines and the plurality of scan lines intersect to form a plurality of pixel units;
the extending directions of the touch electrode wires and the data wires are consistent, and the touch electrode wires and the data wires are arranged on the same layer.
13. The touch display panel according to claim 1, further comprising a substrate base plate, wherein the touch electrode blocks and the touch electrode lines are located on one side of the substrate base plate;
in the light emitting direction deviating from the touch display panel, the substrate base plate comprises a first corner, a second corner, a third corner and a fourth corner which are arranged clockwise, and the first corner and the second corner are arc-shaped corners.
14. The touch display panel according to claim 1, further comprising a substrate base plate, wherein the touch electrode blocks and the touch electrode lines are located on one side of the substrate base plate;
in the light emitting direction departing from the touch display panel, the substrate base plate comprises a fifth corner, a sixth corner, a seventh corner and an eighth corner which are arranged clockwise, and the fifth corner and the sixth corner are arc-shaped corners; the substrate base plate further comprises a second special-shaped edge, and the second special-shaped edge is a part protruding towards the display area from the edge, located between the fifth corner and the sixth corner, of the substrate base plate;
the touch display panel further comprises an integrated circuit, the integrated circuit is located between the seventh corner and the eighth corner, and the integrated circuit is located on one side of the display area, which is far away from the fifth corner and the sixth corner.
15. The touch display panel according to claim 1, wherein the touch electrode blocks are multiplexed as a common electrode.
16. The touch display panel according to claim 1, wherein the number of the touch electrode lines overlapping one of the first touch electrode blocks is M, and the number of the touch electrode lines overlapping one of the second touch electrode blocks is N, and M is N.
17. The touch display panel according to claim 1, wherein the touch electrode line includes a touch electrode line main body portion and a touch electrode line protrusion portion, the extending direction of the touch electrode line main body portion is the extending direction of the touch electrode line, and the touch electrode line protrusion portion is electrically connected to the touch electrode line main body portion; the protruding parts of the touch electrode wires are electrically connected with the corresponding touch electrode blocks through the connecting holes.
18. A display device comprising the touch display panel according to any one of claims 1 to 17.
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| CN201811427419.XA CN109491544B (en) | 2018-11-27 | 2018-11-27 | Touch display panel and display device |
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| 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 |
| CN111965878B (en) * | 2020-08-31 | 2023-06-13 | 上海天马微电子有限公司 | Dimming panel, manufacturing method thereof and intelligent window glass |
| CN113495650B (en) * | 2021-06-11 | 2022-08-12 | 武汉天马微电子有限公司 | Touch substrate, display panel and display device |
| WO2023141820A1 (en) * | 2022-01-26 | 2023-08-03 | 京东方科技集团股份有限公司 | Touch structure, display panel and display device |
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| CN107272966A (en) * | 2017-07-31 | 2017-10-20 | 厦门天马微电子有限公司 | Substrate, display panel and display device |
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| JP2017107252A (en) * | 2014-04-14 | 2017-06-15 | シャープ株式会社 | Display device and electronic apparatus |
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| CN107153492A (en) * | 2017-07-24 | 2017-09-12 | 厦门天马微电子有限公司 | Array base palte and touch-control display panel |
| CN107272966A (en) * | 2017-07-31 | 2017-10-20 | 厦门天马微电子有限公司 | Substrate, display panel and display device |
| CN108228004A (en) * | 2018-03-23 | 2018-06-29 | 上海中航光电子有限公司 | Display panel and display device |
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