CN113407056B - Touch functional film layer and display panel - Google Patents
Touch functional film layer and display panel Download PDFInfo
- Publication number
- CN113407056B CN113407056B CN202110673979.9A CN202110673979A CN113407056B CN 113407056 B CN113407056 B CN 113407056B CN 202110673979 A CN202110673979 A CN 202110673979A CN 113407056 B CN113407056 B CN 113407056B
- Authority
- CN
- China
- Prior art keywords
- touch
- layer
- main body
- bridge
- touch electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010410 layer Substances 0.000 claims description 110
- 239000004973 liquid crystal related substance Substances 0.000 claims description 19
- 239000002346 layers by function Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- 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
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Abstract
The application discloses a touch control functional film layer and a display panel, wherein the touch control functional film layer comprises: the touch electrode layer comprises a plurality of touch electrode units; the bridge connection layer is laminated with the touch electrode layer and is arranged in an insulating mode through the insulating layer, the bridge connection layer comprises a plurality of bridge electrodes, each bridge electrode comprises a main body part and an extending part which is connected with at least one end of the main body part in an intersecting mode, at least part of the touch electrode units in the plurality of touch electrode units are electrically connected through the bridge electrodes, and the bridge electrodes are connected with the touch electrode unit through holes through the extending parts. The application can increase the width of the bridge hole of the bridge electrode and the width of the wiring allowed on or under the bridge.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch functional film layer and a display panel.
Background
In recent years, touch technology is increasingly applied to display devices with various sizes, and a touch display panel is used as a display panel of a novel man-machine interaction input mode, so that compared with the traditional modes of display, keyboard and mouse input, the touch screen input is simpler, more direct and more convenient.
To implement the touch function of the display device, it is generally necessary to introduce touch electrodes into the display device, and in some cases, different touch electrodes need to be electrically connected through bridge electrodes. However, at the bridging position where the touch electrode is connected, the bridge hole span is smaller due to the limitation of pixel distribution and bridging parts, and the width of the wiring on or under the bridge is obviously limited.
Disclosure of Invention
The embodiment of the application provides a touch functional film layer and a display panel.
In a first aspect, an embodiment of the present application provides a touch functional film layer, where the touch functional film layer includes: touch functional film layer includes: the touch electrode layer comprises a plurality of touch electrode units; the bridge connection layer is laminated with the touch electrode layer and is arranged in an insulating mode through the insulating layer, the bridge connection layer comprises a plurality of bridge electrodes, each bridge electrode comprises a main body part and an extending part which is connected with at least one end of the main body part in an intersecting mode, at least part of the touch electrode units in the plurality of touch electrode units are electrically connected through the bridge electrodes, and the bridge electrodes are connected with the touch electrode unit through holes through the extending parts.
According to any one of the first aspect of the present application, the extension portion includes a first connection beam, the end of the main body portion to which the extension portion is connected includes a first connection location, the first connection beam is connected to the first connection location through an end portion, and a portion of the extension portion connected to the touch electrode unit via hole is located on the first connection beam.
According to any one of the foregoing embodiments of the first aspect of the present application, an end portion of the main body portion connected to the first connection beam is further connected to the touch electrode unit via hole.
According to any one of the foregoing embodiments of the first aspect of the present application, the longitudinal direction of the first connecting beam is perpendicular to the longitudinal direction of the main body portion.
According to any one of the foregoing embodiments of the first aspect of the present application, the extension portion further includes a second connection beam, the end of the main body portion to which the extension portion is connected includes a second connection location, the first connection location and the second connection location are distributed on a peripheral side of the main body portion, the second connection beam is connected to the second connection location through an end portion, and the first connection beam and the second connection beam are respectively connected to the touch electrode unit via hole.
According to any of the foregoing embodiments of the first aspect of the present application, the first connection beam and the second connection beam are symmetrically disposed with respect to the main body portion.
According to any one of the foregoing embodiments of the first aspect of the present application, the first connection beam and the second connection beam are aligned in the longitudinal direction and are connected to the main body portion so as to intersect perpendicularly.
According to any of the foregoing embodiments of the first aspect of the present application, the main body has a first center line, the length direction of the first center line is perpendicular to the length direction of the main body, two extending portions are connected to two ends of the main body, and two extending portions located at two ends of the main body are disposed in an antisymmetric manner or a symmetrical manner with respect to the first center line.
According to any one of the foregoing embodiments of the first aspect of the present application, the plurality of touch electrode units are divided into first touch electrode units and second touch electrode units, the first touch electrode units and the second touch electrode units are insulated from each other, the plurality of first touch electrode units are arranged at intervals along a first direction, the plurality of second touch electrode units are arranged at intervals along a second direction, and the first direction and the second direction intersect; any two adjacent first touch electrode units are electrically connected through a bridge electrode, any two adjacent second touch electrode units are electrically connected through a first wiring, orthographic projection of at least part of the plurality of bridge electrodes on the touch electrode layer is intersected with the first wiring, and the ratio of the size of the first wiring in the first direction to the size of the bridge electrode in the first direction is larger than 0.3.
According to any of the foregoing embodiments of the first aspect of the present application, a ratio of a dimension of the first trace in the first direction to a dimension of the bridge electrode in the first direction is 0.45 to 0.85.
According to any of the foregoing embodiments of the first aspect of the present application, the ratio of the length of the extension portion to the length of the main body portion is 0.075 to 0.24, and the ratio of the width of the extension portion to the width of the main body portion is 0.8 to 1.2.
According to any of the foregoing embodiments of the first aspect of the present application, the length of the main body portion is from 0.15mm to 0.20mm, the length of the extension portion is from 0.015mm to 0.03mm, and the width of the main body portion and the extension portion is from 0.004mm to 0.005mm.
According to any of the foregoing embodiments of the first aspect of the present application, the length direction of the main body portion of the bridge electrode is parallel to the first direction, and the extending direction of the first trace is parallel to the second direction.
According to any of the foregoing embodiments of the first aspect of the application, the first direction is perpendicular to the second direction.
In a second aspect, an embodiment of the present application provides a display panel, including: displaying a functional layer; the touch functional film layer is arranged on the light emitting side of the display functional layer, and the touch functional film layer is the touch functional film layer according to any one of the previous embodiments.
According to the foregoing embodiment of the second aspect of the present application, the display function layer includes a plurality of sub-pixels arranged in an array, and the orthographic projection of the bridge electrode on the display function layer does not overlap with the sub-pixels.
According to any one of the foregoing embodiments of the second aspect of the present application, the display panel is an organic light emitting display panel, and the display functional layer includes a pixel circuit layer, an organic light emitting layer, and an encapsulation layer that are sequentially disposed, and the touch functional film layer is located on a side of the encapsulation layer away from the organic light emitting layer.
According to any one of the foregoing embodiments of the second aspect of the present application, the display panel is a liquid crystal display panel, and the display functional layer includes an array substrate, a liquid crystal layer, and a color film substrate sequentially disposed; the touch control functional film layer is positioned on one side of the color film substrate, which is far away from the liquid crystal layer.
According to the touch control functional film layer and the display panel provided by the embodiment of the application, the touch control functional film layer comprises the touch control electrode layer and the bridging connection layer, at least part of the touch control electrode units of the touch control electrode layer are electrically connected through the bridge electrodes of the bridging connection layer, at least one end of the main body part of the bridge electrode is provided with the extending parts which are connected with the main body part in an intersecting way, and the bridge electrode is connected with the through holes of the touch control electrode units through the extending parts, so that the width of the bridge holes of the bridge electrode can be increased under the condition that the whole span of the bridge electrode is certain, and the minimum distance between the two touch control electrode units electrically connected through the bridge electrode can be further increased.
It can be appreciated that if the interval between two touch electrode units electrically connected through the bridge electrode is increased, the width of the trace allowed to pass between the two touch electrode units can be increased, and the trace impedance can be reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
fig. 3 is a schematic structural diagram of a touch functional film according to an embodiment of the present application;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
FIG. 5 is a cross-sectional view taken along the direction C-C in FIG. 4;
fig. 6 is a schematic structural diagram of a touch functional film according to another embodiment of the present application;
FIG. 7 is an enlarged schematic view of portion D of FIG. 6;
fig. 8 is a schematic diagram of a partial structure of a touch functional film according to an embodiment of the present application;
fig. 9 is a schematic diagram of a partial structure of a bridge electrode of a touch functional film according to an embodiment of the present application;
fig. 10 is a schematic diagram of a partial structure of a bridge electrode of a touch functional film according to another embodiment of the present application;
FIG. 11 is a cross-sectional view taken along the direction E-E in FIG. 8;
fig. 12 is a schematic partial structure diagram of a bridge electrode of a touch functional film according to another embodiment of the present application;
fig. 13 is a schematic partial structure of a bridge electrode of a touch functional film according to another embodiment of the present application;
fig. 14 is a schematic structural diagram of a bridge electrode of a touch functional film according to an embodiment of the present application;
fig. 15 is a schematic structural diagram of a bridge electrode of a touch functional film according to another embodiment of the present application;
fig. 16 is a schematic structural diagram of a bridge electrode of a touch functional film according to another embodiment of the present application;
fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present application.
Reference numerals illustrate:
10-a display panel;
100-displaying a functional layer;
200-a touch functional film layer;
201-a bridging connection layer; 210-bridge electrodes; 211-a main body; c-a first midline; 212-an extension; 212 A-A first connection beam; 212 b-a second connection beam;
202-an insulating layer;
203-a touch electrode layer; 230-a touch electrode unit; 231-a first touch electrode unit; 232-a second touch electrode unit; 233-first trace.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
In recent years, touch technology is increasingly applied to display devices with various sizes, and a touch display panel is used as a display panel of a novel man-machine interaction input mode, so that compared with the traditional modes of display, keyboard and mouse input, the touch screen input is simpler, more direct and more convenient.
To implement the touch function of the display device, it is generally necessary to introduce touch electrodes into the display device, and in some cases, different touch electrodes need to be electrically connected through bridge electrodes. However, at the bridging position where the touch electrode is connected, the span of the bridge limits the width of the wiring on the bridge or under the bridge, the wiring impedance is larger, and the whole channel impedance is at risk of exceeding the driving capability of the chip.
In order to solve the above problems, embodiments of the present application provide a touch functional film, a display panel and a display device, and the embodiments of the touch functional film, the display panel and the display device will be described with reference to fig. 1 to 17.
The embodiment of the application provides a display panel, which can be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, a liquid crystal (Liquid Crystal Display, LCD) display panel, and the like, and the application is not limited thereto.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present application; fig. 2 is a cross-sectional view taken along the direction A-A in fig. 1.
The display panel 10 provided by the embodiment of the application comprises a touch functional film layer 200 and a display functional layer 100. The touch functional film 200 is disposed on the light emitting side of the display functional layer 100. The touch function of the display panel 10 is realized by the touch function film layer 200, and the display function of the display panel 10 is realized by the display function layer 100.
Alternatively, the display panel 10 is an organic light emitting display panel, and the display functional layer 100 includes a pixel circuit layer, an organic light emitting layer, and an encapsulation layer sequentially disposed, and the touch functional layer may be located on a side of the encapsulation layer away from the organic light emitting layer.
The organic light-emitting display panel 10 includes an organic light-emitting layer, and each pixel point can emit light of three primary colors of red, green and blue, so that the display effect of the organic light-emitting display panel 10 is more bright and full, and the pixel points of the organic light-emitting display panel 10 work independently, so that the power consumption is low, the response speed is high, and the organic light-emitting display panel 10 does not need to be provided with a backlight layer, thereby being beneficial to realizing a curved screen.
Optionally, the display panel 10 is a liquid crystal display panel, the display functional layer 100 includes an array substrate, a liquid crystal layer, and a color film substrate that are sequentially disposed, and the touch functional layer may be located on a side of the color film substrate away from the liquid crystal layer.
The liquid crystal display panel 10 includes a liquid crystal layer, the liquid crystal layer is disposed on a light emitting surface of the backlight, and the deflection of the liquid crystal in the liquid crystal layer is controlled by the array substrate to control the brightness of the pixel points, so as to control the display pattern of the liquid crystal display panel 10, and the display effect of the liquid crystal display panel 10 is natural, and the liquid crystal display panel is not easy to fatigue after long-time viewing, and has low cost and long service life.
The touch functional film layer 200 includes a touch electrode layer 203 and a bridging connection layer 201, where the bridging connection layer 201 is laminated with the touch electrode layer 203 and is insulated by an insulating layer 202. The touch electrode layer 203 includes a plurality of touch electrode units 230. The bridging connection layer 201 includes a plurality of bridge electrodes 210, and at least some of the plurality of touch electrode units 230 are electrically connected through the bridge electrodes 210.
Alternatively, in order to reduce the influence of the display function layer 100 on the touch function film layer 200 and prevent interference between the two, the bridge electrode 210 may be disposed on a metal layer close to the display function layer 100, and the touch electrode unit 230 may be disposed on a side of the bridge electrode 210 facing away from the display function layer 100.
The display function layer 100 may include a plurality of sub-pixels arranged in an array, and preferably, the front projection of the bridge electrode 210 on the display function layer 100 does not overlap with the sub-pixels. The bridge electrode 210 is mostly made of a metal material, the metal material has good conductivity, but the light transmittance of the metal material is poor, and the bridge electrode 210 and the sub-pixel are arranged in a staggered manner and are not overlapped, so that the influence of the bridge electrode 210 on the light emitting effect of the sub-pixel can be avoided.
The materials of the touch electrode unit 230 and the bridge electrode 210 are not particularly limited in the present application. As a preferred embodiment, the bridge electrode 210 may be made of a metal material with a smaller resistance, such as molybdenum, to reduce the impedance of the bridge electrode 210; in order to prevent the touch electrode unit 230 from shielding the sub-pixels, the touch electrode unit 230 may be made of transparent conductive material such as Indium Tin Oxide (ITO).
Fig. 3 is a schematic structural diagram of a touch functional film according to an embodiment of the present application; FIG. 4 is an enlarged schematic view of portion B of FIG. 3; fig. 5 is a cross-sectional view taken along the direction C-C in fig. 4. The boundary between the main body portion 211 and the extension portion 212 is shown in fig. 4 by a dotted line, which does not limit the structure of the bridge electrode 210, and each portion of the bridge electrode 210 may be integrally provided.
The touch functional film layer 200 provided by the embodiment of the application comprises a touch electrode layer 203 and a bridging connection layer 201, wherein the bridging connection layer 201 and the touch electrode layer 203 are laminated and are insulated through an insulating layer 202. The touch electrode layer 203 includes a plurality of touch electrode units 230. The bridging connection layer 201 includes a plurality of bridge electrodes 210, and at least some of the plurality of touch electrode units 230 are electrically connected through the bridge electrodes 210.
As shown in fig. 4 and 5, in some alternative embodiments, the bridge electrode 210 may include a body portion 211 and an extension 212 intersecting at least one end of the body portion 211. At least some of the plurality of touch electrode units 230 are electrically connected through the bridge electrode 210, and the bridge electrode 210 is connected to the touch electrode unit 230 via hole through the extension 212.
According to the touch functional film 200 provided by the embodiment of the application, the extending portion 212 intersecting and connected with the main body portion 211 of the bridge electrode 210 is provided at least at one end of the main body portion 211, and the bridge electrode 210 is connected with the touch electrode unit 230 via the extending portion 212, so that the width of the bridge hole of the bridge electrode 210 can be increased under the condition that the whole span of the bridge electrode 210 is fixed, and the minimum distance between two touch electrode units 230 electrically connected by the bridge electrode 210 can be increased.
It can be appreciated that if the interval between the two touch electrode units 230 electrically connected through the bridge electrode 210 is increased, the width of the trace allowed to pass between the two touch electrode units 230 can be increased, and the trace impedance can be reduced.
It should be noted that, the two electrically connected touch electrode units 230 may be electrically connected through one bridge electrode 210, or may be electrically connected through two or more bridge electrodes 210.
The present application is not particularly limited to the size of the extension 212, and in some alternative embodiments, the ratio of the length of the extension 212 to the length of the main body 211 may be between 0.075 and 0.24, and the width of the extension 212 may be consistent with the width of the main body 211, so that the via connection requirement can be satisfied, and the influence of the extension 212 on the display effect can be reduced.
Fig. 6 is a schematic structural diagram of a touch functional film according to another embodiment of the present application; fig. 7 is an enlarged schematic view of the portion D in fig. 6.
In some alternative embodiments, the plurality of touch electrode units 230 may be divided into first touch electrode units 231 and second touch electrode units 232, where the plurality of first touch electrode units 231 are arranged at intervals along a first direction (X direction in the drawing), and the plurality of second touch electrode units 232 are arranged at intervals along a second direction (Y direction in the drawing), and the first direction and the second direction intersect. Any two adjacent first touch electrode units 231 are electrically connected, any two adjacent second touch electrode units 232 are electrically connected, and the first touch electrode units 231 and the second touch electrode units 232 are mutually insulated. The display panel 10 may generate touch information based on a change in capacitance between the first touch electrode unit 231 and the second touch electrode unit 232, thereby implementing a touch function.
The first direction and the second direction are arranged in a plurality of modes, and the first direction and the second direction can be intersected and arranged at any preset angle. Preferably, the angle between the first direction and the second direction may be 90 degrees, i.e. the first direction is perpendicular to the second direction.
Optionally, to avoid a short circuit between the first touch electrode unit 231 and the second touch electrode unit 232, any two adjacent first touch electrode units 231 may be electrically connected through the bridge electrode 210, any two adjacent second touch electrode units 232 may be electrically connected through the first trace 233, and the first trace 233 may be disposed on the same layer as the touch electrode layer 203.
Optionally, at least a portion of the first trace 233 passes between two adjacent first touch electrode units 231, and then the orthographic projection of the bridge electrode 210 on the touch electrode layer 203 intersects with the first trace 233.
According to the touch functional film 200 provided in the embodiment of the application, the extension portion 212 intersecting and connected with the main body portion 211 of the bridge electrode 210 is provided at least at one end of the main body portion 211, and the bridge electrode 210 is connected with the touch electrode unit 230 via the extension portion 212, so that the width of the bridge hole of the bridge electrode 210 can be increased, the distance between two adjacent first touch electrode units 231 can be increased, the width of the first trace 233 can be increased, and the impedance can be reduced.
It is understood that in some alternative embodiments, the first touch electrode unit 231 may be a touch driving electrode, the second touch electrode unit 232 may be a touch sensing electrode, or the first touch electrode unit 231 may be a touch sensing electrode, and the second touch electrode unit 232 may be a touch driving electrode.
The touch driving electrode and the touch sensing electrode are electrically connected with the driving chip, and in the touch stage, the driving chip sends a touch driving signal to the touch driving electrode, when the touch sensing electrode senses the touch of the whole touch, the touch sensing signal is sent to the driving chip, and the driving chip judges the touch position according to the touch sensing signal, so that the touch function of the display panel 10 is realized.
In some alternative embodiments, the length direction of the main body portion 211 of the bridge electrode 210 may be parallel to the first direction, that is, the arrangement direction of the first touch electrode unit 231, and the extending direction of the first trace 233 may be parallel to the second direction, that is, the arrangement direction of the second touch electrode unit 232, so that the first touch electrode unit 231 and the first touch electrode unit 231 are arranged horizontally and vertically, and the structure is simple and compact.
The size of the first trace 233 is not particularly limited in the present application. In some alternative embodiments, to ensure the width of the first trace 233, the ratio of the dimension d1 of the first trace 233 in the first direction to the dimension d2 of the bridge electrode 210 in the first direction may be greater than 0.3. As a preferred embodiment, the ratio of the dimension d1 of the first trace 233 in the first direction to the dimension d2 of the bridge electrode 210 in the first direction may be between 0.45 and 0.85.
Fig. 8 is a schematic diagram of a partial structure of a bridge electrode of a touch functional film according to an embodiment of the present application; fig. 9 is a schematic diagram of a partial structure of a bridge electrode of a touch functional film according to an embodiment of the present application; fig. 10 is a schematic diagram of a partial structure of a bridge electrode of a touch functional film according to another embodiment of the present application.
The specific structure of the extension portion 212 of the bridge electrode 210 is various, in some alternative embodiments, the extension portion 212 may include a first connection beam 212a, one end of the main body portion 211 connected with the extension portion 212 may include a first connection position, the first connection beam 212a is connected with the first connection position through an end portion, so as to implement the intersecting connection between the first connection beam 212a and one end of the main body portion 211, and the portion where the extension portion 212 is connected with the via hole of the touch electrode unit 230 is located on the first connection beam 212a.
The first connection beam 212a may be disposed in various manners, and the longitudinal direction of the first connection beam 212a and the longitudinal direction of the main body 211 may be disposed to intersect at any predetermined angle. Alternatively, as shown in fig. 8, the length direction of the first connection beam 212a may be perpendicular to the length direction of the main body portion 211, that is, the angle between the first connection beam 212a and the main body portion 211 is 90 °, and the bridge hole width may be further increased without increasing the overall span of the bridge electrode 210.
Alternatively, as shown in fig. 9 and 10, the included angle between the first connecting beam 212a and the main body 211 may be an acute angle or an obtuse angle, which is also within the scope of the present application.
Fig. 11 is a cross-sectional view taken along the direction E-E in fig. 8.
To ensure the reliability of the electrical connection between the bridge electrode 210 and the touch electrode unit 230, the electrical connection area between the bridge electrode 210 and the touch electrode unit 230 is increased, and the end portion of the main body portion 211 connected to the first connection beam 212a may be further connected to the via hole of the touch electrode unit 230.
Fig. 12 is a schematic partial structure diagram of a bridge electrode of a touch functional film according to another embodiment of the present application; fig. 13 is a schematic partial structure diagram of a bridge electrode of a touch functional film according to another embodiment of the present application.
In some alternative embodiments, the extension portion 212 may further include a second connection beam 212b, the end of the main body portion 211 to which the extension portion 212 is connected includes a second connection location, the first connection location and the second connection location distribute the circumference side of the main body portion 211, the second connection beam 212b is connected with the second connection location through an end portion, so that the second connection beam 212b is connected with one end of the main body portion 211 in an intersecting manner, and simultaneously the first connection beam 212a and the second connection beam 212b are respectively connected with the touch electrode unit 230 through holes.
The bridge electrode 210 is connected to the via hole of the touch electrode unit 230 through the first connection beam 212a and the second connection beam 212b, so that an electrical connection area between the bridge electrode 210 and the touch electrode unit 230 can be ensured. At this time, the bridge electrode 210 may be electrically connected with the touch electrode unit 230 only through the extension portion 212, that is, the electrically connected portion of the bridge electrode 210 and the touch electrode unit 230 is located at the extension portion 212, and the main body portion 211 is not directly connected with the touch electrode unit 230, which is more beneficial to the increase of the bridge hole width of the bridge electrode 210.
Alternatively, the first and second connection beams 212a and 212b may be symmetrically disposed with respect to the body portion 211. Of course, the first connection beam 212a and the second connection beam 212b may be disposed asymmetrically with respect to the main body portion 211, for example, the lengths of the first connection beam 212a and the second connection beam 212b may be different, and/or the angles between the first connection beam 212a and the main body portion 211 and the angles between the second connection beam 212b and the main body portion 211 may be different, which is within the scope of the present application.
Alternatively, the first connection beam 212a and the second connection beam 212b may be identical in length direction and vertically intersect with the main body portion 211 such that the end portion of the bridge electrode 210 may have a T shape.
Fig. 14 is a schematic structural diagram of a bridge electrode of a touch functional film according to an embodiment of the present application;
fig. 15 is a schematic structural diagram of a bridge electrode of a touch functional film according to another embodiment of the present application; fig. 16 is a schematic structural diagram of a bridge electrode of a touch functional film according to another embodiment of the present application.
In some alternative embodiments, the two ends of the main body 211 are connected with the extension portions 212, and the two ends of the bridge electrode 210 are connected with the via holes of the touch electrode unit 230 through the extension portions 212, so that the bridge holes of the bridge electrode 210 can be widened towards the two ends.
The body portion 211 may have a first center line c, and a length direction of the first center line c is perpendicular to a length direction of the body portion 211.
Alternatively, as shown in fig. 14, two extension portions 212 located at both ends of the main body portion 211 may be disposed in anti-symmetry about the first center line c. Alternatively, as shown in fig. 15 or 16, two extension portions 212 located at both ends of the main body portion 211 may be symmetrically disposed about the first center line c.
The shape of the main body 211 is not particularly limited in the present application. Alternatively, the front projection of the main body 211 on the touch electrode layer 203 may be an elongated shape having a certain width and extending in a straight line along a certain direction. Of course, the front projection of the main body 211 on the touch electrode layer 203 may be a polygonal line or an arc, and the application is also limited.
The shape of the first connection beam 212a and the second connection beam 212b is not particularly limited in the present application. Alternatively, the orthographic projections of the first connection beam 212a and the second connection beam 212b on the touch electrode layer 203 may be elongated with a certain width and linearly extend along a certain direction, and the widths of the first connection beam 212a and the second connection beam 212b may be consistent with the width of the main body 211.
In order to meet the via connection requirement and reduce the influence of the first connection beam 212a on the display effect, optionally, the ratio of the length of the first connection beam 212a to the length of the main body portion 211 is 0.075 to 0.12, and the width of the first connection beam 212a is identical to the width of the main body portion 211. Alternatively, the ratio of the length of the second connection beam 212b to the length of the main body portion 211 is 0.075 to 0.12, and the width of the second connection beam 212b coincides with the width of the main body portion 211.
It will be appreciated that the size of the bridge electrode 210 cannot be too large to reduce the visibility of the bridge electrode 210, and that the width of the bridge electrode 210 cannot be too small to reduce the impedance of the bridge electrode 210. The present application is not particularly limited in the size of the bridge electrode 210, and in some alternative embodiments, the length of the body portion 211 may be set between 0.15mm and 0.20mm, the lengths of the first and second connection beams 212a and 212b may be set between 0.015mm and 0.03mm, and the widths of the body portion 211 and the first and second connection beams 212a and 212b may be set between 0.004mm and 0.005mm.
Based on the same inventive concept, the embodiment of the application also provides a display device. Fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present application.
As shown in fig. 17, the display device includes the display panel 10 according to any of the above embodiments of the present application, so that the display device provided by the embodiment of the present application has the technical effects of the technical solution in any of the above embodiments, and the explanation of the same or corresponding structure and terms as those of the above embodiments is not repeated herein. The display device provided by the embodiment of the application can be a mobile phone shown in fig. 17, and also can be any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interactive terminal, etc., which are not particularly limited in this embodiment of the application.
These embodiments are not exhaustive of all details, nor are they intended to limit the application to the precise embodiments disclosed, in accordance with the application. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.
Claims (16)
1. The utility model provides a touch-control functional film layer which characterized in that includes:
the touch electrode layer comprises a plurality of touch electrode units;
the bridge-crossing connecting layer is laminated with the touch electrode layer and is arranged in an insulating way through an insulating layer, the bridge-crossing connecting layer comprises a plurality of bridge electrodes, the bridge electrodes comprise a main body part and an extending part which is connected with at least one end of the main body part in an intersecting way, at least part of the touch electrode units in the plurality of touch electrode units are electrically connected through the bridge electrodes, and the bridge electrodes are connected with the touch electrode unit through holes through the extending part;
the plurality of touch electrode units are divided into a first touch electrode unit and a second touch electrode unit, the first touch electrode unit and the second touch electrode unit are mutually insulated, the plurality of first touch electrode units are arranged at intervals along a first direction, the plurality of second touch electrode units are arranged at intervals along a second direction, and the first direction and the second direction are intersected;
any two adjacent first touch electrode units are electrically connected through the bridge electrode, any two adjacent second touch electrode units are electrically connected through a first wiring, orthographic projections of at least part of the plurality of bridge electrodes on the touch electrode layer are intersected with the first wiring, and the ratio of the size of the first wiring in the first direction to the size of the bridge electrode in the first direction is larger than 0.3.
2. The touch functional film according to claim 1, wherein the extension portion includes a first connection beam, an end of the main body portion connected with the extension portion includes a first connection position, the first connection beam is connected with the first connection position through an end portion, and a portion of the extension portion connected with the touch electrode unit via hole is located on the first connection beam.
3. The touch functional film according to claim 2, wherein an end portion of the main body portion connected to the first connection beam is further connected to the touch electrode unit via.
4. The touch functional film according to claim 2, wherein the length direction of the first connection beam is perpendicular to the length direction of the main body portion.
5. The touch functional film layer according to claim 2, wherein the extension portion further comprises a second connection beam, one end of the main body portion to which the extension portion is connected comprises a second connection position, the first connection position and the second connection position are distributed on the peripheral side of the main body portion, the second connection beam is connected with the second connection position through an end portion, and the first connection beam and the second connection beam are respectively connected with the touch electrode unit via hole.
6. The touch functional film according to claim 5, wherein the first connection beam and the second connection beam are symmetrically disposed with respect to the main body portion.
7. The touch functional film according to claim 5, wherein the first connection beam and the second connection beam are identical in length direction and are perpendicularly connected to the main body portion in a crossing manner.
8. The touch functional film according to any one of claims 1 to 7, wherein the main body portion has a first center line, a length direction of the first center line is perpendicular to a length direction of the main body portion, two ends of the main body portion are connected with the extending portions, and two extending portions located at two ends of the main body portion are disposed in an antisymmetric manner or a symmetrical manner with respect to the first center line.
9. The touch functional film according to any one of claims 1 to 7, wherein a ratio of a dimension of the first trace in the first direction to a dimension of the bridge electrode in the first direction is 0.45 to 0.85.
10. The touch functional film according to any one of claims 1 to 7, wherein a ratio of a length of the extension portion to a length of the main body portion is 0.075 to 0.24, and a width of the extension portion is identical to a width of the main body portion.
11. The touch functional film according to claim 10, wherein the length of the main body portion is 0.15mm to 0.20mm, the length of the extension portion is 0.015mm to 0.03mm, and the widths of the main body portion and the extension portion are 0.004mm to 0.005mm.
12. The touch functional film according to any one of claims 1 to 7, wherein a length direction of the main body portion of the bridge electrode is parallel to the first direction, and an extension direction of the first trace is parallel to the second direction.
13. The touch functional film of claim 12, wherein the first direction is perpendicular to the second direction.
14. A display panel, comprising:
displaying a functional layer;
the touch functional film layer is arranged on the light emitting side of the display functional layer, and the touch functional film layer is as claimed in any one of claims 1 to 13.
15. The display panel of claim 14, wherein the display function layer comprises a plurality of sub-pixels arranged in an array, and wherein the orthographic projection of the bridge electrode on the display function layer does not overlap with the sub-pixels.
16. The display panel according to claim 14, wherein the display panel is an organic light-emitting display panel, the display function layer comprises a pixel circuit layer, an organic light-emitting layer and a packaging layer which are sequentially arranged, and the touch function film layer is positioned on one side of the packaging layer away from the organic light-emitting layer; or (b)
The display panel is a liquid crystal display panel, and the display functional layer comprises an array substrate, a liquid crystal layer and a color film substrate which are sequentially arranged; the touch control functional film layer is positioned on one side of the color film substrate far away from the liquid crystal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673979.9A CN113407056B (en) | 2021-06-17 | 2021-06-17 | Touch functional film layer and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673979.9A CN113407056B (en) | 2021-06-17 | 2021-06-17 | Touch functional film layer and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113407056A CN113407056A (en) | 2021-09-17 |
| CN113407056B true CN113407056B (en) | 2023-12-15 |
Family
ID=77685132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110673979.9A Active CN113407056B (en) | 2021-06-17 | 2021-06-17 | Touch functional film layer and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113407056B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207780739U (en) * | 2017-11-30 | 2018-08-28 | 云谷（固安）科技有限公司 | A kind of touch panel and touch control display apparatus |
| CN207780740U (en) * | 2017-11-30 | 2018-08-28 | 云谷（固安）科技有限公司 | A kind of touch panel and touch control display apparatus |
| CN108897454A (en) * | 2018-06-29 | 2018-11-27 | 武汉天马微电子有限公司 | Touch panel and preparation method thereof, the display panel of integrated touch-control, display device |
| CN109710106A (en) * | 2018-12-12 | 2019-05-03 | 武汉华星光电半导体显示技术有限公司 | Touch panel and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5685411B2 (en) * | 2010-10-01 | 2015-03-18 | 京セラディスプレイ株式会社 | Touch panel |
| TWI502445B (en) * | 2014-06-11 | 2015-10-01 | Innolux Corp | Touch display device and touch substrate |
-
2021
- 2021-06-17 CN CN202110673979.9A patent/CN113407056B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207780739U (en) * | 2017-11-30 | 2018-08-28 | 云谷（固安）科技有限公司 | A kind of touch panel and touch control display apparatus |
| CN207780740U (en) * | 2017-11-30 | 2018-08-28 | 云谷（固安）科技有限公司 | A kind of touch panel and touch control display apparatus |
| CN108897454A (en) * | 2018-06-29 | 2018-11-27 | 武汉天马微电子有限公司 | Touch panel and preparation method thereof, the display panel of integrated touch-control, display device |
| CN109710106A (en) * | 2018-12-12 | 2019-05-03 | 武汉华星光电半导体显示技术有限公司 | Touch panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113407056A (en) | 2021-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102566174B (en) | Liquid crystal display device | |
| US11334179B2 (en) | Display panel to mitigate short-circuiting between touch electrodes, and display device | |
| CN100523930C (en) | Touch board integrating with liquid crystal displaying device | |
| US20200333918A1 (en) | Flexible touch display panel | |
| US8659564B2 (en) | Touch sensible display device having reduced number of image data lines | |
| US8390575B2 (en) | Touch-sensitive liquid crystal display panel with built-in touch mechanism and method for driving same | |
| KR101875020B1 (en) | Electrostatic capacity type touch screen panel | |
| US9195348B2 (en) | Electrostatic capacitive type touch screen panel | |
| US9459744B2 (en) | Touch panel substrate and display device | |
| KR100487356B1 (en) | Method of forming signal line of touch panel | |
| CN108255361B (en) | Touch display panel, driving method thereof and touch display device | |
| US20120080302A1 (en) | Touch screen panel | |
| CN102541335B (en) | Touch display unit | |
| KR20180025389A (en) | Touch panel and display device including the same | |
| US9250492B2 (en) | In-cell touch panel structure of narrow border | |
| CN110858087A (en) | Touch control type display device | |
| CN111240521A (en) | Touch control display device | |
| CN206178727U (en) | Touch -control display panel and electronic equipment | |
| CN113282187A (en) | Display panel and display device | |
| CN102566116A (en) | Capacitance type touch display panel | |
| KR20170076867A (en) | Liquid crystal display device | |
| CN113407056B (en) | Touch functional film layer and display panel | |
| US11500500B2 (en) | Touch component and touch display device | |
| CN212586865U (en) | Touch display panel and display device | |
| KR100369903B1 (en) | Touch panel input device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |