CN112181210A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN112181210A CN112181210A CN202011214191.3A CN202011214191A CN112181210A CN 112181210 A CN112181210 A CN 112181210A CN 202011214191 A CN202011214191 A CN 202011214191A CN 112181210 A CN112181210 A CN 112181210A
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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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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Abstract
The application provides a touch display panel and a display device, and relates to the field of display equipment. A touch display panel comprising: the touch control film layer is provided with a plurality of first metal nets and a plurality of second metal nets, the first metal nets and the second metal nets are arranged in an array, the first metal nets and the second metal nets in each row of the array are arranged alternately in sequence, two adjacent metal nets are electrically isolated, the first metal nets are used as touch control driving electrodes Tx, and the second metal nets are used as touch control sensing electrodes Rx; the projection patterns of the first metal net and the second metal net are the same, and the projection of the net formed by the first metal net and the second metal net on the light-emitting device layer enables each pixel to be located in one grid. The touch control film layer has the advantages that the metal light shielding rate of the touch control electrode is improved, the capacitance value is reduced, and the process is easy to realize compared with the prior art.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a touch display panel and a display device.
Background
With the development of technology, touch display panels are increasingly utilized in various display fields.
In the prior art, a plurality of touch driving electrodes Tx and a plurality of touch sensing electrodes Rx are disposed in a touch display panel, the touch driving electrodes Tx can emit low-voltage high-frequency signals, and the touch sensing electrodes Rx receive the low-voltage high-frequency signals, so as to form a stable capacitance therebetween. The touch of the user may cause different capacitance changes between the touch driving electrode Tx and the touch sensing electrode Rx, thereby implementing a corresponding touch operation. However, the two electrodes are both realized by metal grids, and the two electrodes are formed by designing grids around the sub-pixels in the conventional design, so that the problems of reduction of metal light shielding transmittance, inconvenience in charging and discharging due to high capacitance value, difficulty in realizing the process and the like are caused by the form of designing the grid electrodes.
Therefore, further solution to the above technical problems is needed.
Disclosure of Invention
The main objective of the present invention is to provide a touch display panel and a display device, which can solve the technical problems of the current touch electrode form, such as the reduction of metal light shielding transmittance, the high capacitance value not favorable for charging and discharging, and the difficulty in implementing the process.
In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:
the application provides a touch-control display panel on the one hand, including thin film transistor array substrate, luminescent device layer and the touch-control rete of range upon range of setting, include:
the touch control film layer is provided with a plurality of first metal nets and a plurality of second metal nets, the first metal nets and the second metal nets are arranged in an array, the first metal nets and the second metal nets in each row of the array are arranged alternately in sequence, two adjacent metal nets are electrically isolated, the first metal nets are used as touch control driving electrodes Tx, and the second metal nets are used as touch control sensing electrodes Rx;
the projection patterns of the first metal net and the second metal net are the same, and the projection of the net formed by the first metal net and the second metal net on the light-emitting device layer enables each pixel to be located in one grid.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Optionally, in the touch display panel, the first metal meshes and the second metal meshes arranged in an array are sequentially arranged first metal meshes or sequentially arranged second metal meshes in each row.
Optionally, in the touch display panel, in two adjacent rows of the first metal meshes and the second metal meshes arranged in the array, two adjacent first metal meshes are axisymmetrically arranged, and two adjacent second metal meshes are axisymmetrically arranged.
Optionally, in the touch display panel, the first metal mesh includes a first main portion and a plurality of first branch portions, and the plurality of first branch portions are connected to two sides of the first main portion at intervals and symmetrically;
the second metal net comprises a second main part and a plurality of second branch parts, and the second branch parts are connected to two sides of the second main part at intervals and symmetrically;
the first main parts and the second main parts of two adjacent first metal meshes and second metal meshes are arranged side by side, and a plurality of first branch parts on one side of the first main parts and a plurality of second branch parts on one side of the second main parts are arranged in a staggered mode.
Optionally, in the touch display panel, the first trunk portion is in a shape of a straight line, the plurality of first branch portions connected to one side of the first trunk portion are parallel to each other, and each of the plurality of first branch portions and the first trunk portion form a preset included angle;
the second trunk portion is in a linear strip shape, and a plurality of second branch portions connected to one side of the second trunk portion are parallel to each other and are all at preset included angles with the second trunk portion.
Optionally, in the touch display panel, the plurality of first branch portions connected to one side of the first main portion gradually decrease in size from one end of the first main portion to the other end of the first main portion;
the plurality of second branch portions connected to one side of the second trunk portion are gradually reduced in size from one end to the other end of the second trunk portion.
Optionally, in the touch display panel, two sides of the first trunk portion have a first protruding portion at a position between two adjacent first trunk portions;
the two sides of the second main body part are provided with second protruding parts at the positions between two adjacent second main body parts.
Optionally, in the touch display panel, the touch film layer is divided into a plurality of sub-touch areas arranged in an array, and each sub-touch area at least includes one first metal mesh and one second metal mesh.
Optionally, in the touch display panel, the sub-touch area includes two first metal meshes and two second metal meshes;
the two first metal nets are arranged along the column direction, one of the second metal nets is symmetrically divided into two parts and is respectively positioned at two sides of one of the first metal nets in the row direction, and the other one of the second metal nets is symmetrically divided into two parts and is respectively positioned at two sides of the other one of the first metal nets in the row direction.
Optionally, in the touch display panel, a blank area is disposed between two second metal meshes adjacent to each other in the column direction, and is used to reduce a capacitance value of a capacitor formed by the adjacent first metal meshes and the adjacent second metal meshes;
and arranging a blank area between two adjacent first metal nets in the column direction, wherein the blank area is used for reducing the capacitance value of the capacitor formed by the adjacent first metal nets and the adjacent second metal nets.
In another aspect, the present application provides a display device including:
a touch display panel;
the touch display panel includes:
the thin film transistor array substrate, the light-emitting device layer and the touch control film layer are arranged in a stacked mode;
the touch control film layer is provided with a plurality of first metal nets and a plurality of second metal nets, the first metal nets and the second metal nets are arranged in an array, the first metal nets and the second metal nets in each row of the array are arranged alternately in sequence, two adjacent metal nets are electrically isolated, the first metal nets are used as touch control driving electrodes Tx, and the second metal nets are used as touch control sensing electrodes Rx;
the projection patterns of the first metal net and the second metal net are the same, and the projection of the net formed by the first metal net and the second metal net on the light-emitting device layer enables each pixel to be located in one grid.
By the technical scheme, the touch display panel and the display device at least have the following advantages:
in the touch display panel provided by the embodiment of the invention, the touch driving electrode Tx and the touch sensing electrode Rx in the touch film layer are respectively a first metal mesh and a second metal mesh, namely, two electrodes in the touch control film layer are in a grid shape, and the projection of the net formed by the first metal net and the second metal net on the light-emitting device layer enables each pixel to be positioned in one grid, that is, the grid is arranged around the pixel to form the electrode, compared with the prior art in which the grid electrode is arranged around the sub-pixel, the electrode arrangement method can effectively reduce the area of the metal grid, thereby effectively improving the transmittance of the touch display panel, and simultaneously reducing the capacitance between the touch driving electrode Tx and the touch sensing electrode Rx, the charging rate between the touch driving electrode Tx and the touch sensing electrode Rx can be effectively improved, and the touch performance is improved; in addition, according to the touch display panel provided by the embodiment of the invention, the grids of the first metal mesh and the second metal mesh serving as the touch driving electrodes Tx and the touch sensing electrodes Rx surround the pixels for one circle, the electrode arrangement mode can reduce the metal overlapping area between the adjacent touch driving electrodes Tx and the touch sensing electrodes Rx, and the problem of metal fracture at the connecting bridge of the touch sensing electrodes Rx or the touch driving electrodes Tx due to the lamination arrangement can be reduced while the capacitance value and the mutual capacitance value are reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
fig. 1 schematically illustrates a top view of a touch film layer of a touch display panel;
FIG. 2 schematically illustrates a top view of a first metal mesh of a touch film layer of a touch display panel;
FIG. 3 schematically illustrates a top view of a second metal mesh of a touch film layer of a touch display panel;
FIG. 4 schematically illustrates a top view of a sub-touch unit of a touch film of a touch display panel when no pixel is displayed;
FIG. 5 schematically illustrates a top view of a sub-touch unit of a touch film of a touch display panel displaying pixels;
fig. 6 schematically illustrates a schematic diagram of a metal overlapping area of a touch driving electrode Tx and a touch sensing electrode Rx in the prior art;
fig. 7 schematically illustrates a schematic diagram of a metal overlapping area of a touch driving electrode Tx and a touch sensing electrode Rx of a touch display panel.
The reference numerals in fig. 1-7 are:
the touch control film layer 100, the sub-touch control area 10, the first metal mesh 1, the first trunk portion 11, the first branch portion 12, the first protruding portion 13, the second metal mesh 2, the second trunk portion 21, the second branch portion 22, the second protruding portion 23, the pixel 3, the blank area 4, the metal overlapping area S1, the metal overlapping area S2, the touch control driving electrode 1', the touch control sensing electrode 2', and the sub-pixel 3 '.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
Example one
As shown in fig. 1 to fig. 3, a touch display panel according to an embodiment of the present invention includes a thin film transistor array substrate, a light emitting device layer, and a touch film layer 100, which are stacked, and includes:
the touch control film layer 100 is formed with a plurality of first metal meshes 1 and a plurality of second metal meshes 2, the first metal meshes 1 and the second metal meshes 2 are arranged in an array, the first metal meshes 1 and the second metal meshes 2 in each row of the array are sequentially arranged in an alternating manner, two adjacent metal meshes are electrically isolated, the first metal meshes 1 are used as touch control driving electrodes Tx, and the second metal meshes 2 are used as touch control sensing electrodes Rx;
wherein, the projection patterns of the first metal mesh 1 and the second metal mesh 2 are the same, and the projection of the mesh formed by the first metal mesh 1 and the second metal mesh 2 on the light-emitting device layer makes each pixel 3 be located in one grid.
Specifically, the touch display film layer provided in the embodiment of the present invention may be applied to an organic light emitting semiconductor display panel (abbreviated as OLED), that is, the touch display panel includes a thin film transistor array substrate, a light emitting device layer, and a touch film layer 100 that are stacked, and may further include a protective glass located at an outermost layer of the touch display surface.
The layered structure of the touch film layer 100 may refer to the prior art, for example, a first inorganic material layer and a first metal layer, i.e., a layer where the first metal mesh 1 is located, and a second inorganic material layer and a second metal layer, i.e., a layer where the second metal mesh 2 is located, may be sequentially disposed.
The projections of the first metal meshes 1 and the second metal meshes 2 in the touch film layer 100 may be distributed over the entire touch film layer 100 to correspond to all the pixels 3 of the light emitting device layer, the areas of the first metal meshes 1 and the areas of the second metal meshes 2 are set appropriately according to the needs of the touch function and the touch precision, the first metal meshes 1 and the second metal meshes 2 are arranged in an array arrangement manner, and in order to realize the touch function according to the change of capacitance, the first metal meshes 1 and the second metal meshes 2 in each row which are required to be arranged in the array are alternately arranged, that is, the first metal meshes 1, the second metal meshes 2, the first metal meshes 1 and the second metal meshes 2 are arranged in a row in a circulating arrangement manner. And all the first metal nets 1 and the first metal nets 1, the first metal nets 1 and the second metal nets 2, and the second metal nets 2 in the entire touch film layer 100 are electrically isolated, and all the first metal nets 1 and all the second metal nets 2 are connected to the touch chip, so that an adjacent one of the first metal nets 1 can be used as a touch driving electrode Tx, and one of the second metal nets 2 can be used as a touch sensing electrode Rx in the entire touch film layer 100, so that a capacitance equal to the number of the first metal nets 1 is formed in the entire touch film layer 100, and further, by touching capacitances corresponding to different positions of the light emitting device layer, the capacitance at the position is subjected to accommodation change, and further, a touch input signal is obtained by processing of the touch chip, thereby realizing a touch function.
It should be noted that, in the touch film layer 100 of the touch display panel provided in the embodiment of the present invention, the projection pattern and the size of the first metal mesh 1 are the same as those of the second metal mesh 2, and the projection of the mesh formed by the plurality of first metal meshes 1 and the plurality of second metal meshes 2 on the light emitting device layer is performed such that each mesh is correspondingly located on a circle of one pixel 3, that is, the mesh is formed by surrounding a single pixel 3, and then the first metal mesh 1 and the second metal mesh 2 in the required shape are formed by surrounding the mesh.
In the touch display panel provided in the embodiment of the present invention, the touch driving electrode Tx and the touch sensing electrode Rx in the touch film layer 100 are respectively the first metal mesh 1 and the second metal mesh 2, that is, two electrodes in the touch film layer 100 are in a grid shape, and the projection of the mesh formed by the first metal mesh 1 and the second metal mesh 2 on the light emitting device layer enables each pixel 3 to be located in one grid, that is, the grid is arranged around the pixel 3 to form the above-mentioned electrodes, compared with the prior art in which the grid electrode is arranged around the sub-pixel 3', the electrode arrangement manner can effectively reduce the area of the metal grid, thereby effectively improving the transmittance of the touch display panel, simultaneously reducing the capacitance value between the touch driving electrode Tx and the touch sensing electrode Rx, and effectively improving the charging rate between the touch driving electrode Tx and the touch sensing electrode Rx, and the touch performance is improved.
In addition, due to the touch display panel provided by the embodiment of the invention, the grids of the first metal mesh 1 and the second metal mesh 2 as the touch driving electrode Tx and the touch sensing electrode Rx surround the pixels 3. Fig. 7 shows an overlapping position of the first metal mesh 1 and the second metal mesh 2 of the touch film 100 provided by the embodiment of the invention, a dotted line is encircled as a metal overlapping region S1, fig. 6 shows an overlapping position of the touch sensing electrode 1' and the touch driving electrode 2' in the prior art, a dotted line is encircled as a metal overlapping region S2, and a grid of the touch sensing electrode 1' and the touch driving electrode 2' in the prior art only surrounds a sub-pixel 3' for one circle. Therefore, the electrode arrangement manner of the present invention can reduce the metal overlapping area S1 between the adjacent touch driving electrodes Tx and touch sensing electrodes Rx, and reduce the capacitance value and the mutual capacitance value, and at the same time, reduce the problem of metal fracture at the connecting bridge caused by the stacked arrangement of the touch sensing electrodes Rx or touch driving electrodes Tx in the overlapping area.
As shown in fig. 1, in the specific implementation, the first metal meshes 1 and the second metal meshes 2 arranged in an array are the first metal meshes 1 arranged in sequence or the second metal meshes 2 arranged in sequence in each column.
Specifically, it is preferable that each column of the array arrangement is provided with the same expanded metal, and the first expanded metal 1 and the second expanded metal 2 are alternately provided in each column. That is, the arrangement mode only needs to affect the touch performance, or under the design idea of the present invention, if there is a better arrangement mode to improve the touch performance, the embodiment of the present invention may also adopt other arrangement modes, and the arrangement mode is not limited to each column, and may also be applicable to each row.
Further, as shown in fig. 1, in two adjacent rows of the first expanded metal 1 and the second expanded metal 2 arranged in an array, two adjacent first expanded metal 1 are disposed axisymmetrically, and two adjacent second expanded metal 2 are disposed axisymmetrically.
Specifically, two adjacent first metal meshes 1 or second metal meshes 2 in two adjacent rows are arranged in an axisymmetric manner, so that the first metal meshes 1 and the second metal meshes 2 can be arranged more closely in the touch film layer when the first metal meshes 1 and the second metal meshes 2 are arranged in a special shape.
As shown in fig. 1 to 3, in an implementation, the first expanded metal 1 includes a first trunk portion 11 and a plurality of first branch portions 12, and the plurality of first branch portions 12 are connected to two sides of the first trunk portion 11 at intervals and symmetrically;
the second metal mesh 2 comprises a second main part 21 and a plurality of second branch parts 22, and the second branch parts 22 are connected to two sides of the second main part 21 at intervals and symmetrically;
wherein, the first trunk parts 11 and the second trunk parts 21 of two adjacent first metal meshes 1 and second metal meshes 2 are arranged side by side, and a plurality of first branch parts 12 on one side of the first trunk part 11 and a plurality of second branch parts 22 on one side of the second trunk part 21 are arranged alternately.
Specifically, compared with the conventional touch driving electrode 1' and touch sensing electrode 2' shown in fig. 6 in which metal meshes are formed around the sub-pixel 3', the meshes of the first metal mesh 1 and the second metal mesh 2 of the embodiment of the present invention are wound around the pixel 3, that is, the metal meshes are formed around the pixel 3, in this way, although the accommodation is reduced and the transmittance is improved, the mutual capacitance of the touch driving electrode Tx and the touch sensing electrode Rx is reduced. Therefore, in the embodiment of the present invention, the first metal mesh 1 is further configured to have a pattern shape that a plurality of branch portions are disposed on both sides of the first main portion 11, for example, a fishbone shape or a tree shape, and the second metal mesh 2 is configured to have a pattern shape that is the same as that of the first metal mesh 1, such that after the first main portion 11 and the second main portion 21 are disposed side by side, a plurality of first branch portions on one side of the first metal mesh 1 can be interlaced with a plurality of second branch portions on one side of the second metal mesh 2, such that the first metal mesh 1 and the second metal mesh 2 can be closely arranged on the touch film 100, and a plurality of sufficient portions are interlaced with each other, such that the interface area between the touch driving electrode Tx formed by the first metal mesh 1 and the touch sensing electrode Rx formed by the second metal mesh 2 is increased, such that the change in the Δ Cm (before and after touch capacitance) between the touch driving electrode Tx and the touch sensing electrode Rx is determined, And delta Cm/Cm (the ratio of the capacitance value change before and after touch control to the original capacitance value) can be improved, so that the touch control performance is ensured.
In each row arranged in an array, the first branch portions 12 on one side of the first trunk portion 11 of one first metal mesh 1 and the second branch portions 22 on one side of the second trunk portion 21 of the second metal mesh 2 are arranged alternately, and then are repeatedly arranged according to the staggered arrangement mode, so as to arrange all the first metal meshes 1 and the second metal meshes 2, as shown in fig. 1 in a specific example.
Further, as shown in fig. 1 to 3, the pattern shapes of the first expanded metal 1 and the second expanded metal 2 may further be:
the first trunk part 11 is in a linear strip shape, and a plurality of first branch parts 12 connected to one side of the first trunk part 11 are parallel to each other and form a preset included angle with the first trunk part 11;
the second trunk portion 21 is in a linear shape, and a plurality of second branch portions 22 connected to one side of the second trunk portion 21 are parallel to each other and form a preset included angle with the second trunk portion 21;
a plurality of the first branch portions 12 connected to one side of the first trunk portion 11 are gradually reduced in size from one end to the other end of the first trunk portion 11;
the plurality of second branch portions 22 connected to the second trunk portion 21 side are gradually reduced in size from one end to the other end of the second trunk portion 21.
Specifically, the angle between the first trunk portion 11 and the first branch portions 12 may be 30 to 60 degrees, preferably 45 degrees, and since the pattern shape and size of the first expanded metal 1 are the same as those of the second expanded metal 2, the angle between the second trunk portion 21 and the second branch portions 22 is also 30 to 60 degrees, preferably 45 degrees, so that the first expanded metal 1 and the second expanded metal 2 may be graphically inverted to each other, and then the first branch portions 12 on one side and the second branch portions 22 on one side may be alternately arranged with each other as shown in fig. 1.
In order to make the first metal mesh 1 and the second metal mesh 2 cross each other and then fully spread the entire touch film 100 without leaving a gap, the sizes of the first branch portions 12 on the side of the first main portion 11 from one end to the other end of the first main portion 11 may be correspondingly reduced, and the sizes of the second branch portions 22 on the side of the second main portion 21 from one end to the other end of the second main portion 21 may be correspondingly reduced, so that the first metal mesh 1 and the second metal mesh 2 are more tightly arranged in a staggered manner.
As shown in fig. 1 to 3, in a specific implementation, in order to prevent the first metal mesh 1 and the second metal mesh 2 from locally shining when the touch display panel displays, edges of the first trunk portion 11 and the first branch portion 12 of the first metal mesh 1 are provided with a saw-tooth shape or a non-smooth shape, and edges of the second trunk portion 21 and the second branch portion 22 of the second metal mesh 2 are provided with a saw-tooth shape or a non-smooth shape, for example, two sides of the first trunk portion 11 are provided with a first protruding portion 13 at a position between two adjacent first trunk portions 11; the two sides of the second trunk portion 21 have a second protruding portion 23 at a position between two adjacent second trunk portions 21, that is, the blanking effect is realized by the non-smooth shape of the edge, so that the visual effect of the touch display panel is increased.
As shown in fig. 4 and fig. 5, in an implementation, the touch film layer 100 is divided into a plurality of sub-touch areas 10 arranged in an array, and each sub-touch area 10 at least includes one first metal mesh 1 and one second metal mesh 2.
Specifically, the size of the sub-touch areas 10 can be specifically set according to the requirement of touch control and the size of the touch display panel, and the number of the first metal meshes 1 and the second metal meshes 2 in each sub-touch area 10 can also be appropriately adjusted, that is, the number of the touch driving electrodes Tx and the touch sensing electrodes Rx in each sub-touch area 10 can be appropriately adjusted, but it should be noted that the first metal meshes 1 and the second metal meshes 2 must be paired, that is, the touch driving electrodes Tx and the touch sensing electrodes Rx must be paired.
Further, the sub-touch area 10 includes two first metal meshes 1 and two second metal meshes 2;
the two first metal nets 1 are arranged in the column direction, one of the second metal nets 2 is symmetrically divided into two parts and is respectively positioned at two sides of one of the first metal nets 1 in the row direction, and the other one of the second metal nets 2 is symmetrically divided into two parts and is respectively positioned at two sides of the other one of the first metal nets 1 in the row direction.
In specific implementation, a blank area 4 is arranged between two adjacent second metal nets 2 in the column direction, and is used for reducing the capacitance value of the capacitance formed by the adjacent first metal net 1 and the adjacent second metal net 2;
and a blank area 4 is arranged between two adjacent first metal nets 1 in the column direction and is used for reducing the capacitance value of the capacitor formed by the adjacent first metal nets 1 and the adjacent second metal nets 2.
Specifically, the shape of the blank area 4 may not be limited, for example, the blank area may be heart-shaped, circular, polygonal, etc., the blank area 4 may be provided with a metal mesh or may be directly left without a metal mesh, but is not connected to the first metal mesh and the second metal mesh, and is not connected to the touch chip by a lead.
For the touch film layer 100 of the touch display panel provided by the embodiment of the invention, a corresponding simulation experiment is performed, and the capacitance values of the touch driving electrode Tx and the touch sensing electrode Rx are about 0.5pF, which is reduced to 1 half compared with the capacitance value of the scheme in the prior art, so that the method is extremely powerful for the charging and discharging process of the two electrodes, and the refresh rate of the display panel can be improved; meanwhile, the self-capacitance Cp is reduced by about 2pF, the metal area ratio is reduced from 11.3% to 7%, the transmittance is remarkably improved, and the transmittance can be improved by about 0.2% for the whole touch display panel. Meanwhile, the embodiment of the invention can ensure that the value of the delta Cm is 0.058pF, and the delta Cm/Cm can be increased to 10.9 percent from the current 5.5 percent, thereby doubling the value and ensuring excellent touch performance.
Example two
The second embodiment of the invention provides a display device, which comprises a touch display panel; as shown in fig. 1 to 3, the touch display panel includes: the thin film transistor array substrate, the light emitting device layer and the touch control film layer 100 are stacked;
the touch control film layer 100 is formed with a plurality of first metal meshes 1 and a plurality of second metal meshes 2, the first metal meshes 1 and the second metal meshes 2 are arranged in an array, the first metal meshes 1 and the second metal meshes 2 in each row of the array are sequentially arranged in an alternating manner, two adjacent metal meshes are electrically isolated, the first metal meshes 1 are used as touch control driving electrodes Tx, and the second metal meshes 2 are used as touch control sensing electrodes Rx;
wherein, the projection patterns of the first metal mesh 1 and the second metal mesh 2 are the same, and the projection of the mesh formed by the first metal mesh 1 and the second metal mesh 2 on the light-emitting device layer makes each pixel 3 be located in one grid.
Specifically, the touch display panel described in the second embodiment can directly use the touch display panel provided in the first embodiment, and specific implementation structures can refer to the related contents described in the first embodiment, which are not described herein again.
The display device provided by the embodiment of the invention uses the touch display panel provided by the first embodiment, the touch driving electrode Tx and the touch sensing electrode Rx in the touch film layer 100 of the touch display panel are respectively the first metal mesh 1 and the second metal mesh 2, that is, two electrodes in the touch film layer 100 are in a grid shape, and the projection of the grid formed by the first metal mesh 1 and the second metal mesh 2 on the light emitting device layer enables each pixel 3 to be located in a grid, that is, the grid is arranged around the pixel 3 to form the above electrodes, compared with the prior art in which the grid electrode is arranged around the sub-pixel 3', the area of the metal grid can be effectively reduced, so that the transmittance of the touch display panel can be effectively improved, and meanwhile, the capacitance value between the touch driving electrode Tx and the touch sensing electrode Rx can be reduced, the charging rate between the touch driving electrode Tx and the touch sensing electrode Rx can be effectively improved, touch performance is improved; in addition, according to the touch display panel provided by the embodiment of the invention, the grids of the first metal mesh 1 and the second metal mesh 2 serving as the touch driving electrode Tx and the touch sensing electrode Rx surround the pixel 3 for one circle, the electrode arrangement mode can reduce the metal overlapping area between the adjacent touch driving electrode Tx and the touch sensing electrode Rx, and can reduce the metal fracture problem at the connecting bridge caused by the lamination arrangement of the touch sensing electrode Rx or the touch driving electrode Tx in the overlapping area while reducing the capacitance value and the mutual capacitance value.
It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (11)
1. The utility model provides a touch-control display panel, includes thin film transistor array substrate, light emitting device layer and the touch-control rete of range upon range of setting, its characterized in that includes:
the touch control film layer is provided with a plurality of first metal nets and a plurality of second metal nets, the first metal nets and the second metal nets are arranged in an array, the first metal nets and the second metal nets in each row of the array are arranged alternately in sequence, two adjacent metal nets are electrically isolated, the first metal nets are used as touch control driving electrodes Tx, and the second metal nets are used as touch control sensing electrodes Rx;
the projection patterns of the first metal net and the second metal net are the same, and the projection of the net formed by the first metal net and the second metal net on the light-emitting device layer enables each pixel to be located in one grid.
2. The touch display panel of claim 1,
the first metal nets and the second metal nets which are arranged in an array are the first metal nets which are arranged in sequence or the second metal nets which are arranged in sequence in each row.
3. The touch display panel of claim 2,
in two adjacent rows of the first metal nets and the second metal nets arranged in the array, two adjacent first metal nets are arranged in an axial symmetry mode, and two adjacent second metal nets are arranged in an axial symmetry mode.
4. The touch display panel according to any one of claims 1 to 3,
the first metal net comprises a first main part and a plurality of first branch parts, and the first branch parts are connected to two sides of the first main part at intervals and symmetrically;
the second metal net comprises a second main part and a plurality of second branch parts, and the second branch parts are connected to two sides of the second main part at intervals and symmetrically;
the first main parts and the second main parts of two adjacent first metal meshes and second metal meshes are arranged side by side, and a plurality of first branch parts on one side of the first main parts and a plurality of second branch parts on one side of the second main parts are arranged in a staggered mode.
5. The touch display panel of claim 4,
the first main part is in a linear strip shape, a plurality of first branch parts connected to one side of the first main part are mutually parallel and form preset included angles with the first main part;
the second trunk portion is in a linear strip shape, and a plurality of second branch portions connected to one side of the second trunk portion are parallel to each other and are all at preset included angles with the second trunk portion.
6. The touch display panel of claim 5,
a plurality of first branch portions connected to one side of the first trunk portion, the first branch portions being gradually reduced in size from one end to the other end of the first trunk portion;
the plurality of second branch portions connected to one side of the second trunk portion are gradually reduced in size from one end to the other end of the second trunk portion.
7. The touch display panel of claim 6,
two sides of the first trunk parts are provided with first protruding parts at positions between two adjacent first trunk parts;
the two sides of the second main body part are provided with second protruding parts at the positions between two adjacent second main body parts.
8. The touch display panel of claim 1,
the touch film layer is divided into a plurality of sub-touch areas which are arranged in an array mode, and each sub-touch area at least comprises one first metal net and one second metal net.
9. The touch display panel of claim 8,
the sub-touch area comprises two first metal nets and two second metal nets;
the two first metal nets are arranged along the column direction, one of the second metal nets is symmetrically divided into two parts and is respectively positioned at two sides of one of the first metal nets in the row direction, and the other one of the second metal nets is symmetrically divided into two parts and is respectively positioned at two sides of the other one of the first metal nets in the row direction.
10. The touch display panel of claim 9,
a blank area is arranged between two adjacent second metal nets in the column direction and is used for reducing the capacitance value of capacitance formed by the adjacent first metal nets and the adjacent second metal nets;
and arranging a blank area between two adjacent first metal nets in the column direction, wherein the blank area is used for reducing the capacitance value of the capacitor formed by the adjacent first metal nets and the adjacent second metal nets.
11. A display device, comprising:
the touch display panel of any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214191.3A CN112181210A (en) | 2020-11-04 | 2020-11-04 | Touch display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214191.3A CN112181210A (en) | 2020-11-04 | 2020-11-04 | Touch display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112181210A true CN112181210A (en) | 2021-01-05 |
Family
ID=73916338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011214191.3A Pending CN112181210A (en) | 2020-11-04 | 2020-11-04 | Touch display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112181210A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114327134A (en) * | 2021-12-22 | 2022-04-12 | 深圳市华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
| CN115237281A (en) * | 2022-09-22 | 2022-10-25 | 惠科股份有限公司 | Touch panel and electronic equipment |
| WO2022257034A1 (en) * | 2021-06-09 | 2022-12-15 | Boe Technology Group Co., Ltd. | Touch control structure and display apparatus |
-
2020
- 2020-11-04 CN CN202011214191.3A patent/CN112181210A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257034A1 (en) * | 2021-06-09 | 2022-12-15 | Boe Technology Group Co., Ltd. | Touch control structure and display apparatus |
| CN114327134A (en) * | 2021-12-22 | 2022-04-12 | 深圳市华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
| CN115237281A (en) * | 2022-09-22 | 2022-10-25 | 惠科股份有限公司 | Touch panel and electronic equipment |
| CN115237281B (en) * | 2022-09-22 | 2023-06-27 | 惠科股份有限公司 | Touch panel and electronic equipment |
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