CN108874255B - Array substrate and display device - Google Patents
Array substrate and display device Download PDFInfo
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- CN108874255B CN108874255B CN201810695472.1A CN201810695472A CN108874255B CN 108874255 B CN108874255 B CN 108874255B CN 201810695472 A CN201810695472 A CN 201810695472A CN 108874255 B CN108874255 B CN 108874255B
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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
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention discloses an array substrate and a display device, wherein the array substrate comprises a plurality of first inductance coils and a plurality of second inductance coils which extend along a first direction, the first inductance coils and the second inductance coils are arranged along a second direction, and the first direction is intersected with the second direction; along the second direction, the widths of all the first inductance coils are the same, and the width of the second inductance coil is smaller than that of the first inductance coil; the first inductance coils are mutually overlapped along the second direction, and comprise two first side inductance coils positioned at the outermost two sides along the second direction, and at least one second inductance coil is arranged in an area surrounded by the first side inductance coils. According to the technical scheme, the inductance touch sensitivity of the area corresponding to the first side inductance coil is improved, and the requirement on the size of the display device is reduced while the space occupied by the inductance coil is not influenced.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to an array substrate and a display device.
Background
According to different working principles, touch screens can be divided into a resistance touch screen, a capacitance touch screen, an electromagnetic touch screen and the like, the resistance touch screen and the capacitance touch screen can be directly operated by hands, but touch of hands and a pen is difficult to accurately distinguish, and therefore the electromagnetic touch screen is produced. An inductance coil is generally arranged in the electromagnetic touch screen, a resonance circuit is arranged in the electromagnetic pen, the electromagnetic pen moves on the electromagnetic touch screen, the resonance circuit in the electromagnetic pen is excited by electromagnetic waves sent by the inductance coil to send out electromagnetic signals, the inductance coil generates induced currents according to the received electromagnetic signals and sends the induced currents to a driving chip in the electromagnetic touch screen, and the driving chip judges the position of the electromagnetic touch screen touched by the electromagnetic pen according to the received induced currents.
The display device comprises a central area and a side area surrounding the central area, the plurality of inductance coils are mutually overlapped in the central area of the display device, and the electromagnetic pen can sense the change of an electromagnetic field by more inductance coils in touch at a certain point to generate stronger induced current which is easily identified by the driving chip to determine the touch position. However, in the side area of the display device, the number of the inductance coils is small, no overlapping of the inductance coils exists, and only very few inductance coils can sense the change of the electromagnetic field within the accuracy range of the electromagnetic pen touch control, so weak induced current is generated, and the inductance touch control sensitivity of the side area of the display device is very low, even the side area of the display device does not have the function of the inductance touch control.
Disclosure of Invention
In view of this, the present invention provides an array substrate and a display device, which increase the number of the inductance coils in the area corresponding to the first side inductance coil and improve the inductance touch sensitivity of the area corresponding to the first side inductance coil, compared with the prior art. In addition, compared with the situation that a part of the second inductance coil is located outside the area surrounded by the first side inductance coil, the requirement on the size of the display device is reduced while the space occupied by the inductance coil is not influenced.
In a first aspect, an embodiment of the present invention provides an array substrate, including:
a plurality of first inductor coils and a plurality of second inductor coils extending in a first direction, the first inductor coils and the second inductor coils being arranged in a second direction, the first direction intersecting the second direction;
along the second direction, the widths of all the first inductance coils are the same, and the width of the second inductance coil is smaller than that of the first inductance coil;
the first inductance coils are mutually overlapped along the second direction, the first inductance coils comprise two first side inductance coils positioned at the outermost two sides along the second direction, and at least one second inductance coil is arranged in an area surrounded by the first side inductance coils.
In a second aspect, an embodiment of the present invention further provides a display device including the array substrate of the first aspect.
The embodiment of the invention provides an array substrate and a display device. Along the second direction, all first inductance coils's width is the same, and first inductance coil overlaps each other along the second direction, and the width that sets up second inductance coil is less than first inductance coil's width, and along the second direction, first inductance coil includes two first side inductance coils that are located the outermost both sides. The at least one second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the number of the inductance coils in the area corresponding to the first side inductance coil is increased compared with the prior art, the problem that the inductance touch sensitivity of the area is caused by the fact that the number of the inductance coils in the area corresponding to the first side inductance coil is too small is solved, the inductance touch sensitivity of the area corresponding to the first side inductance coil is improved, and the realization of the inductance touch function of the area corresponding to the first side inductance coil of the display device is ensured. In addition, the second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the space occupied by the first inductance coil is not influenced by the arrangement of the second inductance coil, and the requirement on the size of the display device is reduced compared with the situation that part of the second inductance coil is positioned outside the area surrounded by the first side inductance coil.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic cross-sectional structure diagram of an array substrate according to an embodiment of the present invention;
fig. 2 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 3 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 4 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 5 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 6 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electromagnetic pen according to an embodiment of the present invention;
fig. 8 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along the direction BB' in FIG. 8;
fig. 10 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
fig. 11 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view taken along direction DD' in FIG. 11;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be 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. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides an array substrate, which comprises a plurality of first inductance coils and a plurality of second inductance coils, wherein the first inductance coils and the second inductance coils extend along a first direction, the first inductance coils and the second inductance coils are arranged along a second direction, and the first direction is intersected with the second direction. And the width of the second inductance coil is smaller than that of the first inductance coil. The first inductance coils are mutually overlapped along the second direction, and comprise two first side inductance coils positioned at the outermost two sides along the second direction, and at least one second inductance coil is arranged in an area surrounded by the first side inductance coils.
The display device comprises a central area and a side area surrounding the central area, the plurality of inductance coils are mutually overlapped in the central area of the display device, and the electromagnetic pen can sense the change of an electromagnetic field by more inductance coils in touch at a certain point to generate stronger induced current which is easily identified by the driving chip to determine the touch position. However, in the side area of the display device, the number of the inductance coils is small, no overlapping of the inductance coils exists, and only very few inductance coils can sense the change of the electromagnetic field within the accuracy range of the electromagnetic pen touch control, so weak induced current is generated, and the inductance touch control sensitivity of the side area of the display device is very low, even the side area of the display device does not have the function of the inductance touch control.
The array substrate provided by the embodiment of the invention comprises a plurality of first inductance coils and a plurality of second inductance coils, wherein the first inductance coils and the second inductance coils extend along a first direction, the first inductance coils and the second inductance coils are arranged along a second direction, and the first direction is intersected with the second direction. Along the second direction, all first inductance coils's width is the same, and first inductance coil overlaps each other along the second direction, and the width that sets up second inductance coil is less than first inductance coil's width, and along the second direction, first inductance coil includes two first side inductance coils that are located the outermost both sides. The at least one second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the number of the inductance coils in the area corresponding to the first side inductance coil is increased compared with the prior art, the problem that the inductance touch sensitivity of the area is caused by the fact that the number of the inductance coils in the area corresponding to the first side inductance coil is too small is solved, the inductance touch sensitivity of the area corresponding to the first side inductance coil is improved, and the realization of the inductance touch function of the area corresponding to the first side inductance coil of the display device is ensured. In addition, the second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the space occupied by the first inductance coil is not influenced by the arrangement of the second inductance coil, and the requirement on the size of the display device is reduced compared with the situation that part of the second inductance coil is positioned outside the area surrounded by the first side inductance coil.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic cross-sectional structure diagram of an array substrate according to an embodiment of the present invention. As shown in fig. 1, the array substrate includes a plurality of first inductors 1 and a plurality of second inductors 2 extending along a first direction YY, the second inductors 2 are exemplarily thickened in fig. 1 to distinguish the first inductors 1 from the second inductors 2, the first inductors 1 and the second inductors 2 are arranged along a second direction XX, the first direction YY intersects the second direction XX, and the first direction YY and the second direction XX are exemplarily set to be perpendicular to each other, and the first direction YY is a vertical direction. The inductance coil extends along the first direction YY, and the arrangement along the second direction XX means that the width of the inductance coil along the first direction YY is greater than the width of the inductance coil along the second direction XX, for example, the width of the inductance coil along the first direction YY may be set to be greater than 5 times the width of the inductance coil along the second direction XX.
Along the second direction XX, the widths of all the first inductance coils 1 are the same as a, it should be noted that the widths of the first inductance coils 1 along the second direction XX cannot be completely the same under the influence of the process conditions, and the reference that the widths of the first inductance coils 1 along the second direction XX are the same means that the widths of the first inductance coils 1 along the second direction XX are approximately the same within the process allowable range. The first inductance coils 1 are overlapped with each other along the second direction XX, and along the second direction XX, the first inductance coil 1 includes two first side inductance coils 10 located at the outermost two sides, a width b of the second inductance coil 2 along the second direction XX may be set to be smaller than a width a of the first inductance coil 1 along the second direction XX, and at least one second inductance coil 2 is disposed in an area surrounded by the first side inductance coils 10, and fig. 1 exemplarily sets that one second inductance coil 2 is disposed in an area surrounded by the first side inductance coils 10.
For example, one end of the first inductor coil in fig. 1 may be electrically connected to a corresponding port of a driving chip (not shown in fig. 1) in the display device, and the other end of the first inductor coil may be electrically connected to a ground terminal, a resonant circuit is disposed in the electromagnetic pen, the electromagnetic pen moves on the display device, the resonant circuit in the electromagnetic pen is excited by electromagnetic waves transmitted by the first inductor coil to transmit electromagnetic signals, the first inductor coil generates induced currents according to the received electromagnetic signals and transmits the induced currents to the corresponding port of the driving chip, and the driving chip determines coordinates of the touch position of the electromagnetic pen along the second direction XX according to the received induced currents. The width b of the second inductance coil 2 along the second direction XX is smaller than the width a of the first inductance coil 1 along the second direction XX, and at least one second inductance coil 2 is arranged in the area surrounded by the first side inductance coil 10, so that the number of inductance coils in the area corresponding to the first side inductance coil 10 is increased compared with the prior art, the problem of inductance touch sensitivity of the area caused by too small number of inductance coils in the area corresponding to the first side inductance coil 10 is solved, and the inductance touch sensitivity of the area corresponding to the first side inductance coil 10 is improved. In addition, the second inductance coil 2 is arranged in the area surrounded by the first side inductance coil 10, the arrangement of the second inductance coil 2 has no influence on the space occupied by the first inductance coil 1 in the display device, and compared with the situation that a part of the second inductance coil 2 is positioned outside the area surrounded by the first side inductance coil 10, the requirement on the size of the display device is reduced while the space occupied by the inductance coils in the display device is not influenced.
Alternatively, as shown in fig. 1, the array substrate includes a display area AA and a non-display area NAA disposed around the display area AA, and the first side inductor 10 may be disposed in the display area AA along the second direction XX. Specifically, the first edge-side inductor 10 is arranged in the display area AA, and is located in the non-display area NAA relative to at least part of the first edge-side inductor 10, so that the problem that the size of the non-display area NAA of the display device is increased due to the fact that part of the first edge-side inductor 10 occupies the space of the non-display area NAA of the display device is solved, and the display device is facilitated to realize a narrow frame. In addition, the second inductance coil 2 is arranged in the area surrounded by the first side inductance coil 10, and compared with the situation that part of the second inductance coil 2 is located outside the area surrounded by the first side inductance coil 10, the probability that at least part of the second inductance coil 2 is located in the non-display area NAA of the display device is further reduced, and the display device is also beneficial to realizing a narrow frame.
Alternatively, as shown in fig. 1, it may be arranged that the second inductor winding 2 does not overlap the first inductor winding 1 in the second direction XX. Specifically, the first inductors 1 overlap each other along the second direction XX, so that a part of the first inductor 1 exists inside the region surrounded by the first side inductor 10, and if a part of the second inductor 2 is disposed in the region c1 in fig. 1, the second inductor 2 overlaps the first inductor 1, so that the disposition of the second inductor 2 changes the density of the inductors in the region c1, that is, the disposition of the second inductor 2 affects the inductance touch sensitivity of the region c 1.
Alternatively, as shown in fig. 1, the first inductor winding 1 includes an extending portion arranged along the first direction XX, and along the second direction YY, the extending portion includes two first extending portions 11 located at the outermost sides and a second extending portion 12 excluding the first extending portions 11, and the second inductor winding 2 includes a third extending portion 21 arranged along the first direction XX. The second direction XX may be set such that the distances between the adjacent second extending portions 12 are equal to a first distance D1, the distances between the adjacent third extending portions 21 corresponding to the same first side-side inductor 10 are equal to a second distance D2, the distances between the adjacent first extending portions 11 and the adjacent third extending portions 21 are equal to a third distance D3, the distances between the adjacent second extending portions 12 and the adjacent third extending portions 21 are equal to a fourth distance D4, and the first distance D1 is equal to the second distance D1, the third distance D2, and the fourth distance D4.
Specifically, as shown in fig. 1, by setting the first distance D1 equal to the second distance D2, the third distance D3, and the fourth distance D4, so that the portions of the inductors extending along the first direction YY are equally spaced along the second direction XX, the same number of inductors can sense the change of the electromagnetic field at any position touched by the electromagnetic pen, and the magnitudes of the induced currents generated are equal, so that the number of inductors in the region corresponding to the first side inductor 10 is increased compared with the prior art, the inductance touch sensitivity of the region corresponding to the first side inductor 10 is increased, the uniformity of the arrangement of the portions of the inductors extending along the first direction YY along the second direction XX is increased, and the uniformity of the inductance touch performed by the display device is further increased.
Alternatively, as shown in fig. 1, a distance between the first extending portion 11 and the corresponding second side extending portion 121 along the second direction XX is equal to 2n +1 times the first distance D1, the second side extending portion 121 is the second extending portion 12 closest to the corresponding first extending portion 11, the number of the second inductors 2 arranged corresponding to one first side inductor 10 is n, and the width of the second inductor 2 along the second direction XX is equal to m times the first distance D1; wherein m and n are both positive integers. In the second direction XX, if the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 is exemplarily set to be equal to 3 times the first distance D1, that is, n is equal to 1, then the number of the second inductors 2 corresponding to a first side inductor 10, that is, the second inductors 2 located in the area enclosed by a first side inductor 10 is 1, and in order to make the first distance D1 equal to the second distance D1, the third distance D2 and the fourth distance D4, the width b of the second inductor 2 in the second direction XX is equal to the first distance D1, that is, m is equal to 1.
It should be noted that fig. 1 merely exemplarily sets the width a of all the first inductors 1 in the second direction XX to be 4D1, and the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 to be equal to 3D1, and also sets the width a of all the first inductors 1 in the second direction XX to be 5D1, and the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 to be equal to 3D1, as shown in fig. 2, the number of the second inductors 2 set corresponding to a first side inductor 10 may also be set to be 1, so that the first distance D1 is equal to the second distance D1, the third distance D2 and the fourth distance D4, and the width of the second inductor 2 in the second direction XX is equal to D1, that m is equal to 1. For the case that the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 is equal to 3D1, it is sufficient to ensure that the width a of all the first inductor coils 1 along the second direction XX is equal to the integral multiple of the first distance D1 and the width a of the first inductor coils 1 along the second direction XX is greater than or equal to 3D1, and the embodiment of the present invention does not limit the width a of the first inductor coils 1 along the second direction XX.
Fig. 3 is a schematic top view of another array substrate according to an embodiment of the invention. As shown in fig. 3, by way of example, if the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 along the second direction XX is equal to 7D1, that is, n is equal to 3, then the number of the second inductors 2 corresponding to a first side inductor 10 is 3, the width of the second inductors 2 along the second direction XX is equal to D1, that is, m is equal to 1, and it is also possible to arrange the portions of the inductors extending along the first direction YY along the second direction XX at equal intervals, for the stylus pen tips 51 of electromagnetic pens of the same size, the same number of inductors can sense the change of the electromagnetic field at any position touched by the electromagnetic pen, the magnitude of the induced current is equal, and the uniformity of the arrangement of the portions of the inductors extending along the first direction YY along the second direction XX is improved while the inductive touch sensitivity of the corresponding area of the first side inductor 10 is improved relative to the existing technology, and then the uniformity of inductance touch control of the display device is improved.
For example, in the case that the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 is equal to 7D1, there may be arrangements shown in fig. 4 to 6, in which the portions of the inductor coil extending along the first direction YY along the second direction XX are equally spaced, so as to improve the uniformity of arrangement of the portions of the inductor coil extending along the first direction YY along the second direction XX, and further improve the uniformity of inductive touch control performed by the display device.
Illustratively, referring to fig. 3 and 4, the widths b of the second inductor coils 2 along the second direction XX may be equal, for example, the widths b of the second inductor coils 2 along the second direction XX in fig. 3 are equal to D1 and three second inductor coils 2 do not overlap with each other along the second direction XX. Or for example in fig. 4 the widths b of the second inductor coils 2 along the second direction XX are equal to 3D1 and three second inductor coils 2 are overlapped with each other two by two along the second direction XX. Referring to fig. 5 and 6, the widths b of the different second inductors 2 along the second direction XX may not be completely the same, for example, in fig. 5, the widths b of the three second inductors 2 along the second direction XX are D1, 2D1 and 2D1, respectively, and along the second direction XX, the second inductor 21 and the second inductor 22 and the second inductor 23 are not overlapped, and the second inductor 22 and the second inductor 23 are overlapped with each other. Or as shown in fig. 6, the widths of the three second inductors 2 along the second direction XX are 4D1, 4D1 and D1, respectively, and the second inductor 23 and the second inductor 21 are not overlapped with each other and the second inductor 22 and the second inductor 21 and the second inductor 22 are overlapped with each other along the second direction XX.
When the distance D5 between the first extending portion 11 and the corresponding second side extending portion 121 is equal to 2n +1 times of the first distance D1, the number of the second inductors 2 corresponding to a first side inductor 10, the width of the second inductors 2 along the second direction XX, and the overlapping manner of the second inductors 2 may be set according to the setting manner shown in fig. 1 to 6, so that the portions of the inductors extending along the first direction YY along the second direction XX are equally spaced, so as to improve the uniformity of the arrangement of the portions of the inductors extending along the first direction YY along the second direction XX, and further improve the uniformity of the inductive touch of the display device.
Optionally, along the second direction, a distance between an edge of the display area and an edge of the first side inductor coil on the same side may be set to be less than or equal to a distance between two points of the touch pen point of the electromagnetic pen that are farthest from each other along a cross section perpendicular to the extending direction of the electromagnetic pen. Specifically, as shown in fig. 1, along the second direction XX, the edge e1 of the display area AA corresponds to the first side inductor 101, the edge e2 of the display area AA corresponds to the first side inductor 102, along the second direction XX, the distance between the edge of the display area AA and the same side edge of the corresponding first side inductor 10 is set to be less than or equal to the distance between the two points at which the stylus tip of the electromagnetic pen is farthest from each other in the cross-section perpendicular to the extending direction of the electromagnetic pen, that is, along the second direction XX, the distance between the left side edge e1 of the display area AA and the left side edge f1 of the first side inductor 101 may be set to be less than or equal to the distance between the two points at which the stylus tip of the electromagnetic pen is farthest from each other in the cross-section perpendicular to the extending direction of the electromagnetic pen, and along the second direction XX, the distance between the right side edge e2 of the display area AA and the right side edge f2 of the first side inductor 102 may be set to be less than or equal to be equal to the distance between the The distance between the two points that are farthest apart on the transverse plane.
Fig. 7 is a schematic structural diagram of an electromagnetic pen according to an embodiment of the present invention. As shown in fig. 7, the electromagnetic pen comprises a stylus tip 51, and the stylus tip 51 may exemplarily be arranged approximately in a cylindrical shape, so that a cross section S of the stylus tip 51 of the electromagnetic pen along a direction perpendicular to the extension direction ZZ of the electromagnetic pen is circular, and a distance between two points of the cross section S farthest from each other is equal to a diameter of the circle. With reference to fig. 1 and 7, along the second direction XX, by setting the distance between the edge of the display area AA and the same-side edge of the corresponding first side inductor 10 to be less than or equal to the distance between two points of the touch pen tip 51 of the electromagnetic pen that are farthest from each other along the cross section S perpendicular to the extending direction ZZ of the electromagnetic pen, at least one inductor senses the change of the electromagnetic field to generate an induced current no matter where the display area AA of the electromagnetic pen touch display device is located along the second direction XX, so as to avoid the problem that the display device cannot implement electromagnetic touch corresponding to the area where the electromagnetic pen touch display area AA cannot generate the induced current because no inductor senses the change of the electromagnetic field and no inductor senses the induced current in the area between the edge of the second direction XX and the same-side edge of the corresponding first side inductor 10. It should be noted that fig. 7 merely illustrates that the stylus tip 51 is approximately cylindrical, the stylus tip 51 may have other shapes, and the shape of the stylus tip 51 is not limited in the embodiment of the present invention.
Fig. 8 is a schematic top view of another array substrate according to an embodiment of the present invention, and fig. 9 is a schematic cross-sectional view along the direction BB' of fig. 8. With reference to fig. 8 and 9, the first inductor 1 may be disposed in a direction perpendicular to the plane of the array substrate, and the first inductor 1 at the overlapping portion G is routed from the first film layer 61 to the second film layer 62. First inductance coils 1 is traded the line by first rete 61 and is walked the line to second rete 62 for first inductance coils 1 can be along second direction XX mutual overlap, and for first inductance coils 1 along second direction XX non-overlapping setting, to the display device of same size, can increase the quantity of first inductance coils 1 that arranges along second direction XX in the display device, is favorable to improving the display device and carries out the sensitivity of electromagnetism touch-control.
Fig. 10 is a schematic top view of another array substrate according to an embodiment of the invention. On the basis of the above embodiments, the array substrate of the structure shown in fig. 10 further includes a plurality of third inductors 3 and a plurality of fourth inductors 4 extending along the second direction XX, the fourth inductors 4 are exemplarily thickened in fig. 10 to distinguish the third inductors 3 from the fourth inductors 4, and the third inductors 3 and the fourth inductors 4 are arranged along the first direction YY. Similarly, the inductance coil extends along the second direction XX, and the arrangement along the first direction YY means that the width of the inductance coil along the second direction XX is greater than the width of the inductance coil along the first direction YY, for example, the width of the inductance coil along the second direction XX may be set to be greater than 5 times the width of the inductance coil along the first direction YY.
All the third inductors 3 have the same width p along the first direction YY, and similarly, the same width of the third inductors 3 along the first direction YY means that the widths of the third inductors 3 along the first direction YY are approximately equal within the process allowable range. The third inductor winding 3 is overlapped with each other along the first direction YY, and along the first direction YY, the third inductor winding 3 includes two second side inductor windings 30 located at the outermost sides, a width q of the fourth inductor winding 4 along the first direction YY may be set to be smaller than a width p of the third inductor winding 3 along the first direction YY, and at least one fourth inductor winding 4 is provided in an area surrounded by the second side inductor windings 30, and fig. 10 exemplarily sets up that one fourth inductor winding 4 is provided in an area surrounded by the second side inductor windings 30.
The width q of the fourth inductance coil 4 along the first direction YY is smaller than the width p of the third inductance coil 3 along the first direction YY, and at least one fourth inductance coil 4 is arranged in the area surrounded by the second side inductance coil 30, compared with the prior art, the number of inductance coils in the area corresponding to the second side inductance coil 30 is increased, the problem of inductance touch sensitivity of the area caused by the fact that the number of inductance coils in the area corresponding to the second side inductance coil 30 is too small is avoided, and the inductance touch sensitivity of the area corresponding to the second side inductance coil 30 is improved. In addition, the fourth inductor coil 4 is arranged in the area surrounded by the second side inductor coil 30, the arrangement of the fourth inductor coil 4 has no influence on the space occupied by the third inductor coil 3 in the display device, and compared with the situation that a part of the fourth inductor coil 4 is positioned outside the area surrounded by the second side inductor coil 30, the requirement on the size of the display device is reduced while the space occupied by the inductor coils in the display device is not influenced.
Alternatively, as shown in fig. 10, the array substrate includes a display area AA and a non-display area NAA disposed around the display area AA, and the second side inductor 30 may be disposed in the display area AA. Specifically, along the first direction YY, the second side inductor 30 is arranged to be located in the display area AA, and compared with the situation that at least part of the second side inductor 30 is located in the non-display area NAA, the problem that the size of the non-display area NAA of the display device is increased due to the fact that part of the second side inductor 30 occupies the space of the non-display area NAA of the display device is solved, and the display device is beneficial to realizing a narrow frame. In addition, the fourth inductance coil 4 is arranged in the area surrounded by the second side inductance coil 30, and compared with the situation that part of the fourth inductance coil 4 is located outside the area surrounded by the second side inductance coil 30, the probability that at least part of the fourth inductance coil 4 is located in the non-display area NAA of the display device is further reduced, and the display device is also beneficial to realizing a narrow frame.
Alternatively, as shown in fig. 10, the fourth inductor winding 4 may be disposed not to overlap with the third inductor winding 3 along the first direction YY. Specifically, the third inductors 3 are overlapped with each other along the first direction YY, so that there is a part of the third inductor 3 inside the region surrounded by the second side inductor 30, and if a part of the fourth inductor 4 is disposed in the region c2 in fig. 10, the fourth inductor 4 is overlapped with the third inductor 3, so that the disposition of the fourth inductor 4 changes the density of the inductors in the region c2, that is, the disposition of the fourth inductor 4 affects the inductance touch sensitivity of the region c 2.
Alternatively, as shown in fig. 10, the third inductor winding 3 includes an extending portion arranged along the second direction XX, and along the first direction YY, the extending portion includes two fourth extending portions 31 located at two outermost sides and a fifth extending portion 32 excluding the fourth extending portions 31, and the fourth inductor winding 4 includes a sixth extending portion 41 arranged along the second direction XX. In the first direction YY, distances between the adjacent fifth extending portions 32 may be equal to a fifth distance D6, distances between the adjacent sixth extending portions 41 corresponding to the same second side inductor 30 may be equal to a sixth distance D7, distances between the adjacent fourth extending portions 31 and the sixth extending portions 41 may be equal to a seventh distance D8, distances between the adjacent fifth extending portions 32 and the sixth extending portions 41 may be equal to an eighth distance D9, and the fifth distance D6 may be equal to the sixth distance D7, the seventh distance D8, and the eighth distance D9.
Specifically, as shown in FIG. 10, by setting the fifth spacing D6 equal to the sixth spacing D7, the seventh spacing D8, and the eighth spacing D9, the parts of the inductance coils extending along the second direction XX along the first direction YY are arranged at equal intervals, and for the touch pen points of the electromagnetic pen with the same size, the same number of inductance coils at any position along the first direction YY can feel the change of an electromagnetic field, and the sizes of generated induced currents are equal, compared with the prior art, the number of the inductance coils in the area corresponding to the second side inductance coil 30 is increased, the inductance touch sensitivity of the area corresponding to the second side inductance coil 30 is improved, the uniformity of the arrangement of the part of the inductance coil extending along the second direction XX along the first direction YY is improved, and the uniformity of the inductance touch control of the display device is further improved.
Alternatively, a distance between the fourth extending portion 3 and the corresponding fifth side extending portion 321 equal to 2i +1 times the fifth distance D6 along the first direction YY may be provided, the fifth side extending portion 321 is the fifth extending portion 32 closest to the corresponding fourth extending portion 31, the number of the fourth inductors 4 provided corresponding to one second side inductor 30 is i, and the width p of the fourth inductor 4 along the first direction YY is equal to j times the fifth distance D6; wherein i and j are both positive integers. In the first direction YY, fig. 10 exemplarily sets the distance D10 between the fourth extending portion 31 and the corresponding fifth side extending portion 321 equal to 3 times the fifth distance D6, that is, n is equal to 1, the number of the fourth inductors 4 corresponding to one second side inductor 30, that is, the fourth inductors 4 located in the area enclosed by one second side inductor 30 is 1, in order to make the fifth distance D6 equal to the sixth distance D7, the seventh distance D8 and the eighth distance D9, the width q of the fourth inductor 4 in the first direction YY is equal to the fifth distance D6, that is, m is equal to 1.
It should be noted that, referring to fig. 1 to 6, when the first inductor winding 1, the second inductor winding 2 and the first side inductor winding 10 are arranged in the same manner, and the distance between the fourth extending portion 31 and the corresponding fifth side extending portion 321 along the first direction YY is equal to 2i +1 times of the fifth distance D6, referring to the arrangement manner shown in fig. 1 to 6, the number of the fourth inductor windings 4 arranged corresponding to a second side inductor winding 30, the width of the fourth inductor winding 4 along the first direction YY and the overlapping manner of the fourth inductor windings 4 may be arranged in such a manner that the portions of the inductor windings extending along the second direction XX along the first direction YY are arranged at equal intervals along the first direction YY, so as to improve the uniformity of the arrangement of the portions of the inductor windings extending along the second direction XX along the first direction YY and further improve the uniformity of the inductive touch of the display device, the width of the fourth inductor winding 4 along the first direction YY and the overlapping manner of the fourth inductor winding 4 are not limited in the embodiments of the present invention.
Optionally, along the first direction, a distance between an edge of the display area and an edge of the second side of the corresponding second side of the inductor coil on the same side may be set to be less than or equal to a distance between two points of the touch pen point of the electromagnetic pen that are farthest from each other along a cross section perpendicular to an extending direction of the electromagnetic pen. Referring to fig. 7 and 10, along the first direction YY, the edge e3 of the display area AA corresponds to the second side inductor 301, the edge e4 of the display area AA corresponds to the second side inductor 302, and along the first direction YY, the distance between the edge of the display area AA and the edge of the same side of the corresponding second side inductor 30 is set to be less than or equal to the distance between the two points of the touch pen tip 51 of the electromagnetic pen that are farthest from each other along the cross section S perpendicular to the extension direction ZZ of the electromagnetic pen, that is, along the first direction YY, the distance between the lower edge e3 of the display area AA and the lower edge f3 of the second side inductor 301 may be set to be less than or equal to the distance between the two points of the touch pen tip 51 of the electromagnetic pen that are farthest from each other along the cross section S perpendicular to the extension direction ZZ, and along the first direction YY, the distance between the upper edge e4 of the display area AA and the upper edge f4 of the second side inductor 302 of the display area AA may be set to be less than or equal to the distance between the touch pen tip 51 of The distance between the points furthest apart on the cross section S of the direction ZZ.
Along the first direction YY, by setting the distance between the edge of the display area AA and the same side edge of the corresponding second side inductance coil 30 to be less than or equal to the distance between two points of the touch pen tip 51 of the electromagnetic pen, which are farthest from each other along the cross section S perpendicular to the extension direction ZZ of the electromagnetic pen, along the first direction YY, no matter any position of the display area AA of the electromagnetic pen touch display device, at least one inductance coil senses the change of the electromagnetic field to generate an induced current, so that the problem that the electromagnetic touch cannot be realized by the display device corresponding to the area, which is between the edge of the display area AA along the first direction YY and the same side edge of the corresponding second side inductance coil 30, cannot generate the induced current because no inductance coil senses the change of the electromagnetic field is present, is solved.
Fig. 11 is a schematic top view illustrating another array substrate according to an embodiment of the present invention, and fig. 12 is a schematic cross-sectional view taken along direction DD' of fig. 11. With reference to fig. 11 and 12, the third inductor 3 may be disposed in a direction perpendicular to the plane of the array substrate, and the third inductor 3 at the overlapping portion H is routed from the second film 62 to the first film 61. Third inductance coils 3 is traded the line by second rete 62 and is walked the line to first rete 61 for third inductance coils 3 can be along first direction YY mutual overlap, and for third inductance coils 3 along the setting of first direction YY non-overlap, to the display device of same size, can increase the third inductance coils 3's that arranges along the even direction quantity in the display device, is favorable to improving the sensitivity that display device carries out the electromagnetism touch-control.
With reference to fig. 8, 9, 11, and 12, the first film layer 61 and the second film layer 62 are used to dispose the first inductance coil 1 and the third inductance coil 3, so that the first inductance coil 1 and the third inductance coil 3 are overlapped with each other, which is beneficial to improving the sensitivity of the display device for electromagnetic touch control, and the first inductance coil 1 and the third inductance coil 3 are disposed with a minimum number of film layers, which is beneficial to thinning the display device.
It should be noted that the drawings of the embodiments of the present invention only show the size of each element by way of example, and do not represent the actual size of each element in the array substrate.
The array substrate provided by the embodiment of the invention comprises a plurality of first inductance coils and a plurality of second inductance coils, wherein the first inductance coils and the second inductance coils extend along a first direction, the first inductance coils and the second inductance coils are arranged along a second direction, and the first direction is intersected with the second direction. Along the second direction, all first inductance coils's width is the same, and first inductance coil overlaps each other along the second direction, and the width that sets up second inductance coil is less than first inductance coil's width, and along the second direction, first inductance coil includes two first side inductance coils that are located the outermost both sides. The at least one second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the number of the inductance coils in the area corresponding to the first side inductance coil is increased compared with the prior art, the problem that the inductance touch sensitivity of the area is caused by the fact that the number of the inductance coils in the area corresponding to the first side inductance coil is too small is solved, the inductance touch sensitivity of the area corresponding to the first side inductance coil is improved, and the realization of the inductance touch function of the area corresponding to the first side inductance coil of the display device is ensured. In addition, the second inductance coil is arranged in the area surrounded by the first side inductance coil, so that the space occupied by the first inductance coil is not influenced by the arrangement of the second inductance coil, and the requirement on the size of the display device is reduced compared with the situation that part of the second inductance coil is positioned outside the area surrounded by the first side inductance coil.
Fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 13, the display device 20 includes the array substrate 19 in the above embodiment, so that the display device 20 provided in the embodiment of the present invention also has the beneficial effects described in the above embodiment, and further description is omitted here. Illustratively, the display device 20 may include an electronic paper display device, a liquid crystal display device, and an organic light emitting diode display device. The display device 20 may be an electronic display device such as a mobile phone, a computer, a television, and an intelligent wearable device.
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 illustrated herein, but is capable of various obvious changes, rearrangements 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 (14)
1. An array substrate, comprising:
a plurality of first inductor coils and a plurality of second inductor coils extending in a first direction, the first inductor coils and the second inductor coils being arranged in a second direction, the first direction intersecting the second direction;
along the second direction, the widths of all the first inductance coils are the same, and the width of the second inductance coil is smaller than that of the first inductance coil;
the first inductance coils are mutually overlapped along the second direction, the first inductance coils comprise two first side inductance coils positioned at the outermost two sides along the second direction, and at least one second inductance coil is arranged in an area surrounded by the first side inductance coils.
2. The array substrate of claim 1, wherein the second inductor coil does not overlap the first inductor coil along the second direction.
3. The array substrate of claim 2, wherein the first inductor coil comprises an extension portion arranged along the first direction, and along the second direction, the extension portion comprises two first extension portions positioned at two outermost sides and a second extension portion except the first extension portions, and the second inductor coil comprises a third extension portion arranged along the first direction;
along the second direction, the distances between the adjacent second extending portions are equal to a first distance, the distances between the adjacent third extending portions corresponding to the same first side inductor coil are equal to a second distance, the distances between the adjacent first extending portions and the adjacent third extending portions are equal to a third distance, the distances between the adjacent second extending portions and the adjacent third extending portions are equal to a fourth distance, and the first distance is equal to the second distance, the third distance and the fourth distance; along the second direction, the distance between the first extending portion and the corresponding second side extending portion is equal to 2n +1 times of the first distance, the second side extending portion is the second extending portion which is closest to the corresponding first extending portion, the number of the second inductance coils arranged corresponding to one first side inductance coil is n, and the width of the second inductance coil along the second direction is equal to m times of the first distance; wherein m and n are both positive integers.
4. The array substrate of claim 1, comprising a display area and a non-display area surrounding the display area, wherein the first edge-side inductor is located in the display area.
5. The array substrate of claim 4, wherein along the second direction, a distance between an edge of the display area and a corresponding edge of the first side inductor coil on the same side is less than or equal to a distance between two points of a touch pen tip of an electromagnetic pen that are farthest from each other along a cross section perpendicular to an extending direction of the electromagnetic pen.
6. The array substrate of claim 1, wherein in a direction perpendicular to a plane of the array substrate, one of the first inductor coils at the overlap is routed from the first film layer to the second film layer.
7. The array substrate of claim 1, further comprising:
a plurality of third inductor coils and a plurality of fourth inductor coils extending in the second direction, the third inductor coils and the fourth inductor coils being arranged in the first direction;
the widths of all the third inductance coils are the same along the first direction, and the width of the fourth inductance coil is smaller than that of the third inductance coil;
third inductance coils follows first direction looks overlap, follows the first direction, third inductance coils is including two second avris inductance coils that are located outermost both sides, be provided with at least one in the region that second avris inductance coil encloses the city fourth inductance coil.
8. The array substrate of claim 7, wherein the fourth inductor winding does not overlap with the third inductor winding along the first direction.
9. The array substrate of claim 8, wherein the third inductor coil comprises an extension portion disposed along the second direction, and wherein along the first direction, the extension portion comprises two fourth extension portions located at two outermost sides and a fifth extension portion excluding the fourth extension portions, and the fourth inductor coil comprises a sixth extension portion disposed along the second direction;
along the first direction, the distances between the adjacent fifth extending portions are equal to a fifth distance, the distances between the adjacent sixth extending portions corresponding to the same second-side inductance coil are equal to a sixth distance, the distances between the adjacent fourth extending portions and the adjacent sixth extending portions are equal to a seventh distance, the distances between the adjacent fifth extending portions and the adjacent sixth extending portions are equal to an eighth distance, and the fifth distance is equal to the sixth distance, the seventh distance and the eighth distance;
along the first direction, the distance between the fourth extending portion and the corresponding fifth side extending portion is equal to 2i +1 times of the fifth distance, the fifth side extending portion is the fifth extending portion which is closest to the corresponding fourth extending portion, the number of the fourth inductance coils arranged corresponding to one second side inductance coil is i, and the width of the fourth inductance coil along the first direction is equal to j times of the fifth distance; wherein i and j are both positive integers.
10. The array substrate of claim 7, comprising a display area and a non-display area surrounding the display area, wherein the second side inductor is located in the display area.
11. The array substrate of claim 10, wherein along the first direction, a distance between an edge of the display area and an edge of the corresponding second side inductor coil on the same side is smaller than or equal to a distance between two points of a touch pen tip of an electromagnetic pen that are farthest from each other along a cross section perpendicular to an extending direction of the electromagnetic pen.
12. The array substrate of claim 7, wherein in a direction perpendicular to the plane of the array substrate, one of the third inductor coils at the overlap is routed from the second film layer to the first film layer.
13. A display device comprising the array substrate according to any one of claims 1 to 12.
14. The display device according to claim 13, wherein the display device comprises an electronic paper display device, a liquid crystal display device, and an organic light emitting diode display device.
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