WO2019242361A1 - 触控基板、触控显示面板、触控显示装置和触控驱动方法 - Google Patents
触控基板、触控显示面板、触控显示装置和触控驱动方法 Download PDFInfo
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- WO2019242361A1 WO2019242361A1 PCT/CN2019/079292 CN2019079292W WO2019242361A1 WO 2019242361 A1 WO2019242361 A1 WO 2019242361A1 CN 2019079292 W CN2019079292 W CN 2019079292W WO 2019242361 A1 WO2019242361 A1 WO 2019242361A1
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- sensing electrode
- sensing
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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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- 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
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Definitions
- the present disclosure relates to the field of touch technology, and in particular, to a touch substrate, a touch display panel, a touch display device, and a touch driving method.
- Touch technology mainly includes resistive, capacitive, and infrared optical. Capacitive touch technology has the characteristics of sensitive response, so capacitive touch technology is widely used in smart phones and tablet computers.
- Capacitive touch screens are mainly divided into: OGS (One Glass Solutions, OGS) touch screens, On-cell touch screens, and In-cell touch screens.
- OGS refers to a touch screen that is attached to the outside of the display panel.
- On-cell touch screen refers to the production of touch electrode patterns with touch function on the color film substrate of the display panel, and In-cell touch screen refers to the production of touch electrodes with touch function inside the display panel Graphics.
- a touch substrate including a base substrate on which a touch electrode pattern is formed, the touch electrode pattern includes at least one electrode group, and each electrode group includes The driving electrodes and the sensing electrodes which are arranged in a row along the first direction of the base substrate and are provided in insulation; in each electrode group, the driving electrodes have a plurality of driving electrode portions connected to each other, and the sensing electrodes include a plurality of driving electrodes.
- An induction electrode block; each of the driving electrode portions is respectively located between two adjacent induction electrode blocks; the induction electrode block has a plurality of induction electrode regions with different areas.
- the plurality of driving electrode portions are connected end to end and are arranged along the first direction of the base substrate in a zigzag manner.
- each driving electrode portion is respectively provided with a sensing electrode block.
- a width of the induction electrode block located on a side of each of the driving electrode portions extending in a second direction that intersects the first direction in the second direction increases with distance from the driving electrode portion. And gradually decrease; and the width of the sensing electrode block on the other side of the driving electrode portion along the second direction gradually decreases as it moves away from the driving electrode portion.
- each sensing electrode block is triangular or trapezoidal.
- each sensing electrode block has a right-angled triangle, and a right-angled side and a hypotenuse of each sensing electrode block are parallel to two adjacent driving electrode portions, respectively.
- the length of the long right-angled side of each sensing electrode block is in the range of 10-30 mm; and the length of the short right-angled side of each sensing electrode block is in the range of 4-10 mm.
- the lengths of the two right-angled sides of each sensing electrode block are 7 mm and 20 mm, respectively.
- each sensing electrode block has a right-angled trapezoid; the lower bottom and the oblique waist of each sensing electrode block are respectively parallel to two adjacent driving electrode portions.
- the driving electrode and the sensing electrode are located on the same layer, and each driving electrode portion and each sensing electrode block are arranged at a distance from each other.
- the driving electrode and the sensing electrode each have a metal mesh structure.
- the extending directions of two adjacent driving electrode portions are at a first angle, and the first angle is an acute angle.
- an extending direction of one of the driving electrode portions is parallel to the second direction, and an extending direction of the other driving electrode portion is parallel to that of the second direction.
- the included angle is the first angle.
- the touch substrate further includes a plurality of driving electrode leads and a plurality of sensing electrode leads disposed on the base substrate.
- the driving electrodes are respectively connected to corresponding driving electrode leads; and each of the sensing electrode blocks is respectively connected to a corresponding sensing electrode lead.
- the touch substrate further includes a terminal of each driving electrode lead and a terminal of each sensing electrode lead.
- the terminals of each driving electrode lead and the terminals of each sensing electrode lead are located in a non-display area on the same side of the base substrate.
- a color filter layer is further disposed on a side of the base substrate opposite to a side on which the touch electrode pattern is provided.
- a touch driving method for a touch substrate includes: a base substrate on which a touch electrode pattern is formed, and the touch electrode pattern includes At least one electrode group, each electrode group including driving electrodes and induction electrodes arranged in a row along the first direction of the base substrate and insulated; in each electrode group, the driving electrodes have a plurality of interconnected A driving electrode portion, the sensing electrode including a plurality of sensing electrode blocks; each of the driving electrode portions being respectively located between two adjacent sensing electrode blocks; the sensing electrode block having a plurality of sensing electrode regions having different areas .
- the driving method includes: applying a driving signal to the driving electrode; detecting a signal change before and after a touch occurs to determine a position where a touch occurs on the touch substrate, wherein the signal change is touched in the sensing electrode block; The signal between the sensing electrode region and the driving electrode changes.
- a touch display panel including the touch substrate described above.
- a touch display device including the touch display panel described above.
- a keyboard including the above-mentioned touch display panel, and the touch display panel is disposed in a peripheral area of the keyboard.
- FIG. 1 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure
- FIG. 2 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure
- FIG. 3 is a schematic diagram illustrating a structure of a sensing electrode block according to an exemplary embodiment of the present disclosure
- 4-1 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure
- 4-2 is a schematic diagram illustrating a structure of a sensing electrode block according to an exemplary embodiment of the present disclosure
- 4-3 is a schematic diagram illustrating a structure of a sensing electrode block according to an exemplary embodiment of the present disclosure
- FIG. 4-4 is an enlarged view of a region A in FIG. 4-3;
- FIG. 5 is a schematic diagram illustrating a structure of a touch substrate according to another exemplary embodiment of the present disclosure.
- FIG. 6 is a cross-sectional view illustrating a structure of a touch display panel according to another exemplary embodiment of the present disclosure
- FIG. 7 is a cross-sectional view showing a structure of a keyboard of an exemplary embodiment of the present disclosure.
- FIG. 8 is a schematic diagram illustrating a structure of a touch substrate according to a related art
- FIG. 9 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure.
- FIG. 10 illustrates a flowchart of a touch driving method according to an exemplary embodiment of the present disclosure.
- the touch electrode pattern generally includes a driving electrode and a sensing electrode.
- the driving electrode may include a plurality of driving electrode blocks distributed in a lateral direction.
- the sensing electrode includes a plurality of sensing electrode blocks distributed in a longitudinal direction. The capacitance change between the block and the sensing electrode block is used to identify the touch position.
- An embodiment of the present disclosure provides a touch substrate, including:
- a base substrate on which a touch electrode pattern is formed
- the touch electrode pattern includes at least one electrode group, and each electrode group includes a driving electrode and a sensing electrode arranged in a row along the first direction of the base substrate and insulated;
- the driving electrode has a plurality of interconnected driving electrode portions, and the sensing electrode includes a plurality of sensing electrode blocks;
- Each of the driving electrode portions is respectively located between two adjacent sensing electrode blocks;
- the sensing electrode block has a plurality of sensing electrode regions having different areas.
- the base substrate is a substrate having a touch electrode pattern, and the base substrate may be a glass substrate or other suitable substrates.
- the touch substrate may be a color filter substrate or an array substrate of a display panel, or a substrate that separately implements a touch function.
- the touch electrode pattern formed on the base substrate includes a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are insulated from each other, the driving electrode and the sensing electrode are distributed along a first direction of the base substrate, and the first direction of the base substrate It can be any one direction, for example, the lateral direction (for example, length direction) or longitudinal direction (for example, width direction) of the base substrate, or an oblique direction at an angle to the lateral direction of the base substrate.
- the substrate may include one or more rows of driving electrodes and sensing electrodes disposed along the first direction.
- Each row of driving electrodes has a plurality of interconnected driving electrode portions, each driving electrode portion is located at a different position, and each driving electrode portion They may be electrically connected through a connection line, or a plurality of driving electrode portions may be an integrated structure.
- Each row of sensing electrodes includes multiple sensing electrode blocks, each sensing electrode block is an independent sensing electrode block, each sensing electrode block has multiple sensing electrode regions, and each sensing electrode region has a different area, and each The driving electrode portion is respectively located between two adjacent sensing electrode blocks, that is, a driving electrode portion is provided between two adjacent sensing electrode blocks.
- a capacitance and a ground capacitance are formed between the sensing electrode area and the adjacent driving electrode portion.
- the sensing electrode area corresponding to the touched area and The capacitance between the driving electrode portions and the capacitance to ground will change, so that it is possible to detect a signal change in each of the sensing electrode areas in the sensing electrode block corresponding to the touched area.
- the sensing electrode block has multiple sensing electrode areas with different areas, the capacitance between the different sensing electrode areas and the driving electrode portion and the capacitance to ground will change before and after the touch occurs, so the amount of change in the detected signal will also change.
- each sensing electrode block has multiple sensing electrode areas, so multiple touch locations can be located to achieve multi-touch.
- the above touch substrate can locate multiple touch positions through one sensing electrode block.
- the number and area of sensing electrode regions in each sensing electrode block are related to positioning accuracy and signal sensitivity.
- FIG. 1 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure. As shown in FIG. 1, the touch substrate includes:
- the touch electrode pattern includes a plurality of rows of driving electrodes and sensing electrodes distributed along the first direction of the substrate 10, and the driving electrodes and the sensing electrodes are located on the same layer;
- the driving electrode has a plurality of driving electrode portions 20 connected to each other (for example, end to end), and the sensing electrode includes a plurality of sensing electrode blocks 30;
- Each driving electrode portion 20 is located between two adjacent sensing electrode blocks 30, and each driving electrode portion 20 and each sensing electrode block 30 are spaced from each other;
- the sensing electrode block 30 has a plurality of sensing electrode regions having different areas.
- Fig. 1 schematically shows five rows of driving electrodes and sensing electrodes distributed along the first direction.
- a substrate of a corresponding size can be selected according to the size of the touch substrate required, and it can be set according to needs and processes. Number of rows of drive electrodes and sense electrodes.
- the first direction in FIG. 1 is the lateral direction of the substrate.
- the existing touch electrode pattern is generally provided with only driving electrodes or sensing electrodes in each row along the lateral direction, and along the longitudinal direction of the substrate. (It is a direction perpendicular to or intersecting with the lateral direction, such as the direction shown by arrow B in the figure.)
- the other one of the driving electrode and the sensing electrode is provided.
- each row is along the first direction of the substrate 10
- the driving electrode and the sensing electrode are included, and the driving electrode and the sensing electrode are located on the same layer.
- the driving electrodes of each row have a plurality of driving electrode portions 20 connected to each other, the driving electrode portions 20 being connected end to end and arranged along the first direction of the base substrate 10 in a broken line shape.
- the sensing electrode includes a plurality of sensing electrode blocks 30. Each driving electrode portion 20 and each sensing electrode block 30 are spaced apart from each other, that is, the driving electrode portion 20 and the sensing electrode block 30 are spaced apart a certain distance, so that the driving electrode portions 20 and The sensing electrode blocks 30 are insulated from each other.
- the driving electrode and the sensing electrode can be made of the same material. By separating each driving electrode part from each sensing electrode block by a certain distance, the mutual insulation between the driving electrode and the sensing electrode can be achieved.
- the insulating layer is provided, and the driving electrode and the sensing electrode can be formed by the same patterning process. Therefore, the steps of preparing the touch electrode pattern can be reduced, the preparation materials can be saved, and the preparation cost can be reduced.
- the driving electrode and the sensing electrode may be located in two different layers, and an insulating layer may be used for insulation between the layer where the driving electrode is located and the layer where the sensing electrode is located.
- FIG. 2 is a schematic diagram illustrating a structure of a touch substrate according to another exemplary embodiment of the present disclosure.
- the driving electrode having a plurality of driving electrode portions 20
- the sensing electrode having a plurality of sensing electrode blocks 30
- the driving electrode can be made of a metal mesh film layer.
- the touch electrode pattern When using a touch substrate to make a display panel with a touch function, since the touch electrode pattern is located in the image display area of the display panel, in order to prevent the touch electrode pattern from affecting the image display, the touch electrode pattern needs to be made of a transparent conductive material For example, indium tin oxide (ITO), because ITO has better conductivity and transparency, but the resistivity of ITO is relatively large.
- ITO indium tin oxide
- the driving electrode and the sensing electrode are made of a metal mesh film, that is, the material of the driving electrode and the sensing electrode is a conductive metal material, for example, a metal having a low resistivity, such as silver or copper. Wait. Because the resistivity of the conductive metal material is much smaller than that of ITO, the conductivity of the driving electrode and the sensing electrode can be improved.
- the metal grid film layer refers to a film layer made of a conductive metal material and including a plurality of metal wires that cross horizontally and vertically.
- the line width of the metal wires is very small, usually micron, such as less than 5 microns, and the thickness of the film is thin. It is invisible to the naked eye, and the openings of the grid can transmit light. Therefore, the metal grid film layer has good electrical conductivity and light transmission.
- the metal grid film layer is used to make the driving electrode and the sensing electrode, which can reduce the resistivity of the driving electrode and the sensing electrode and improve the recognition accuracy of the touch position.
- the extending directions of two adjacent driving electrode portions are at a first angle.
- FIG. 1 illustrates two adjacent driving electrode portions 20.
- the first driving electrode portion 21 and the second driving electrode portion 22 in FIG. 1 are two adjacent driving electrode portions.
- An included angle between the extending direction of the first driving electrode portion 21 and the extending direction of the second driving electrode portion 22 is a first angle ⁇ , and the first angle is an acute angle, and the angle may be set according to experience.
- the extension directions of two adjacent driving electrode portions can be flexibly set.
- the extending direction of the first driving electrode portion 21 is a second direction, such as shown by arrow B in FIG. 1.
- the second direction is perpendicular to or intersects the first direction, and an included angle between the extending direction of the second driving electrode portion 22 and the second direction is a first angle ⁇ .
- the driving electrode and the sensing electrode are distributed along the first direction of the base substrate, and the extending direction of the first driving electrode portion 21 is the second direction, that is, the first driving electrode portion 21 extends along the second direction of the substrate substrate.
- the extending direction of the second driving electrode portion 22 is an inclined direction, that is, the second driving electrode portion 22 extends along an inclined direction at a certain angle ⁇ from the second direction.
- each driving electrode portion 20 may be in a strip shape, that is, a length direction of the driving electrode portion 20 is greater than a width direction.
- the strip driving electrode portion 20 is located between two adjacent sensing electrode blocks 30.
- An included angle between the adjacent first driving electrode portion 21 and the second driving electrode portion 22, that is, the first angle ⁇ is, for example, an acute angle, and the acute angle is, for example, 30 ° to 60 °.
- the driving electrode shown in FIG. 1 is an integrally formed structure, and a portion of the driving electrode provided between each two sensing electrode blocks 30 may be used as one driving electrode portion 20, and each driving electrode portion 20 is located at Different positions, as can be seen from FIG. 1, each driving electrode portion 20 is respectively located between two adjacent sensing electrode blocks 30.
- the driving electrode portion 30 is in a strip shape and is interconnected by a plurality of ends.
- the driving electrode composed of the driving electrode portion 20 forms a plurality of bent structures arranged in a zigzag shape.
- sensing electrode blocks 30 are respectively disposed on opposite sides of each driving electrode portion 20.
- induction electrode blocks 30 are provided on opposite sides of each driving electrode portion 20, for example, in FIG. 1, induction electrode blocks 30 are provided on the left and right sides of the first driving electrode portion 21, and the second driving The upper and lower sides of the electrode portion 22 are respectively provided with a sensing electrode block 30.
- Each driving electrode portion 20 can form a capacitance with two sensing electrode blocks 30 adjacent to each other. When a touch occurs, the sensing electrode block can be increased. The amount of signal change of the touched sensing electrode area is beneficial to improving the recognition accuracy of the touch position.
- the width of the sensing electrode block 30 located on one side (for example, the left side) of the driving electrode portion 21 along the second direction gradually decreases as it moves away from the driving electrode portion 21; on the other side of the driving electrode portion 21 (
- the width of the sensing electrode block 30 along the second direction in the second direction gradually decreases as it moves away from the driving electrode portion 21.
- a portion of the two sensing electrode blocks 30 on both sides of the driving electrode portion 21 near the driving electrode portion 21 has a maximum width
- a portion of the two sensing electrode blocks 30 away from the driving electrode portion 21 has a minimum width. width.
- the shape of the sensing electrode block is regular.
- one of the two sensing electrode blocks on one side of which is close to the driving electrode portion 20 is located on the driving electrode portion 20 side (for example, the left side).
- the width of the sensing electrode block (referred to as the first sensing electrode block 31) in the second direction gradually decreases as it moves away from the driving electrode portion 20, that is, along the first direction of the substrate 10, the first sensing electrode block 31 gradually widens from left to right; the width of the sensing electrode block (referred to as the second sensing electrode block 32) located on the other side (for example, the right side) of the driving electrode portion 20 along the second direction moves away from the driving
- the electrode portion 20 is gradually reduced, that is, along the first direction of the base substrate 10, the second sensing electrode block 32 is gradually narrowed from left to right.
- FIG. 3 is a schematic diagram illustrating a structure of a sensing electrode block according to an exemplary embodiment of the present disclosure. Since the width of the sensing electrode block in the first direction is different, the sensing electrode block can be divided into a plurality of parts in the first direction. As shown in FIG. 3, the sensing electrode block 30 may be a triangle, such as a right-angled triangle, and the triangular sensing electrode block 30 may be divided into a plurality of sensing electrode regions. For example, as shown in FIG. 3, the sensing electrode block 30 is divided into four parts, and each part forms a sensing electrode region 301, and the area of each sensing electrode region 301 is different.
- each sensing electrode region 301 Since the area of each sensing electrode region 301 is different, the capacitance between each sensing electrode region and the driving electrode portion is also different. Before and after a touch occurs, the capacitance and the capacitance to ground between the sensing electrode area and the driving electrode portion of different areas are different, and the amount of signal change detected accordingly. Therefore, positioning of multiple touch positions can be performed by one sensing electrode block.
- the induction electrode block can have induction electrode regions with different areas, and the induction electrode block is an integral structure provided as an integral structure.
- the induction electrode region that can be divided by the induction electrode block can be divided. The number is related to the sensitivity of the detection element used to detect the amount of signal change.
- the driving electrode and the sensing electrode are made of a metal mesh film layer, for example, the sensing electrode block 30 is a right-angled triangle.
- the length of the long right-angled side of the induction electrode block 30 is in the range of 10-30 mm, such as 20 mm; the length of the short right-angled side of the induction electrode block 30 is in the range of 4-10 mm, such as 7 mm.
- the sensing electrode block 30 having a side length L1 of 20 mm and a side length L2 of 7 mm, when a driving signal is applied to the driving electrode, by detecting a change in the signal on each sensing electrode block, it is possible to detect each sensing electrode block.
- each sensing electrode block can have four sensing electrode areas, which can distinguish the touch area of 5mm * 5mm, and its sensitivity is equivalent to that of a conventional mutual capacitance capacitive touch panel.
- the sensing electrode block 30 has a right-angled triangle as shown in FIG. 2, the capacitance distribution is uniform, which is beneficial to improve the detection sensitivity.
- the induction electrode block 30 may adopt a regular pattern. In addition to the right-angled triangle shown in FIG. 1, the induction electrode block 30 may also adopt a trapezoid (for example, a right-angle trapezoid) as shown in FIG. 4-1 or as shown in FIG. 4. Acute triangles as shown in -2.
- the driving electrode portion 20 may have a strip shape. As shown in FIG. 4-1, the first driving electrode portion 21 extends in a second direction (the direction indicated by an arrow B in FIG. 4-1), and the second driving electrode portion 22 extends in an oblique direction. A first angle ⁇ is formed between two adjacent driving electrode portions 21 and 22, and the first angle ⁇ is an acute angle.
- An induction electrode block 30 is disposed on two opposite sides of the driving electrode portion 20.
- the included angle between the hypotenuse of the triangular induction electrode block 30 (or the longer waist of the trapezoidal induction electrode block 30) located on both sides of the drive electrode portion 20 and the side length extending in the second direction is the first angle ⁇ and extends in the oblique direction
- a sensing electrode block 30 is disposed on each of the upper and lower sides of the second driving electrode portion 22.
- the two sensing electrode blocks 30 are disposed on both sides of the second driving electrode portion 22 in a direction perpendicular to or intersecting the oblique direction.
- one sensing electrode block 30 is provided on each of the left and right sides of the first driving electrode block 21.
- the two sensing electrode blocks 30 can fill the two sides of the second driving electrode portion 22 extending in the oblique direction, so that the plurality of sensing electrode blocks 30 are far away from each other.
- Each side of the driving electrode portions 21 and 22 is on the same straight line, and the effective area on the base substrate is effectively utilized, which can increase the occupation rate of the touch electrode pattern on the base substrate as a whole and improve the utilization ratio of the base substrate. .
- FIG. 4-2 is a schematic diagram illustrating a structure of a sensing electrode block according to an exemplary embodiment of the present disclosure. As shown in FIG. 4-2, except that the extending direction of the driving electrode portion 21 in FIG. 4-2 and the second direction are at an angle, the structure of the induction electrode block shown in FIG. 4-2 is the same as that in FIG. The structure of the shown sensing electrode block is basically the same. Therefore, a detailed description thereof is omitted.
- the isosceles obtuse-angled triangle shown in FIG. 4-3 and FIG. 4-4 may also be adopted as the sensing electrode block 30.
- the second driving electrode portion 22 extends in the first inclined direction.
- the first driving electrode portion 21 extends in a second oblique direction that is symmetrical to the first oblique direction in the second direction, and a first angle ⁇ is formed between two adjacent driving electrode portions 21 and 22.
- the first angle ⁇ For obtuse angles.
- the included angle between the two waists of the isosceles obtuse angle-shaped sensing electrode block 30 is the first angle ⁇ , and the first angle ⁇ is an obtuse angle.
- the shape of the sensing electrode is not limited to the acute triangle, right triangle, obtuse isosceles triangle, and right angle trapezoid as described above, and other shapes that can be conceived by those skilled in the art are also applicable to the present invention.
- FIG. 4-4 is an enlarged view of the area A in FIG. 4-3.
- the induction electrode block 30 of the isosceles obtuse triangle shape can be divided into four induction electrode regions 401, 402, and 401 having different areas. ', 402'.
- FIG. 5 is a schematic diagram illustrating a structure of a touch substrate according to an exemplary embodiment of the present disclosure.
- a plurality of driving electrode leads 41 and a plurality of sensing electrode leads 42 are further provided on the base substrate 10; the driving electrodes are respectively connected to corresponding driving electrode leads 41, and each of the sensing electrodes is inductive.
- the electrode blocks 30 are respectively connected to corresponding sensing electrode leads 42.
- the driving electrode portion at the leftmost edge among the driving electrodes in each row can be connected to one driving electrode lead.
- the two driving electrode portions at the left and right ends of the driving electrodes in each row may be respectively connected with one driving electrode lead 41 to the driving electrodes through the driving electrode leads on both sides. Input the driving signal to reduce the signal attenuation caused by the resistance of the driving electrode.
- each sensing electrode block is connected to a sensing electrode lead respectively, so the sensing signal on the corresponding sensing electrode block is transmitted through the sensing electrode lead.
- the driving electrode portion is connected to the driving electrode lead, as shown in FIG. 5, an independent driving electrode portion is provided at each end of the driving electrode, and the two driving electrode portions are respectively connected to one driving electrode lead.
- the driving electrode portions extending in the oblique direction at both ends of the driving electrode may be directly connected to the two driving electrode leads, respectively.
- a driving electrode lead and a sensing electrode lead are provided.
- the driving electrode lead can transmit a driving signal provided for the driving electrode
- the sensing electrode lead can transmit a sensing signal output by the sensing electrode
- the sensing signal is transmitted as a detection signal.
- the detection element is used for positioning the touch position.
- the driving signals can be sequentially input to the driving electrodes of each row through the driving electrode leads in a scanning manner, and the driving electrodes can be sequentially output through the sensing electrode leads in a scanning manner.
- the sensing signal is used to position the touched area on the touch substrate accordingly.
- the terminal 411 of each driving electrode lead 41 and the terminal 421 of each sensing electrode lead 42 are located in a peripheral region (also referred to as a non-display) on the same side of the base substrate 10. region).
- Terminals also referred to as bonding pins
- a plurality of terminals are disposed in one of the plurality of peripheral regions, for example, as shown in FIG. 5, the plurality of terminals are located in a peripheral region below the base substrate, thereby reducing the number of non-terminals.
- the occupied area of the remaining peripheral area is conducive to the realization of a touch substrate with a narrow frame.
- a color filter layer is further provided on the side of the base substrate opposite to the side on which the touch electrode pattern is provided.
- One side (for example, the first side) of the base substrate is provided with a touch electrode pattern, and the other side (that is, the side opposite to the first side) of the base substrate is provided with a color filter layer.
- the touch substrate can be used as a touch screen.
- the color film substrate of the display panel is controlled to form an On-cell touch display panel.
- the color filter layer may also be referred to as a color filter (CF).
- the color filter layer may include a color resist layer and a black matrix layer.
- the black matrix layer and the color resist layer are spaced apart from each other.
- the color resist layer may include red ( Red, green, and blue color barriers, each of which is separated by a black matrix layer; the color barrier layer is used to filter light to display color pictures, and the black matrix layer prevents The effect of color mixing and light leakage.
- An embodiment of the present disclosure further provides a touch display panel including the touch substrate according to any one of the above embodiments.
- the touch display panel can be a capacitive touch screen in various forms, such as an OGS touch screen, an On-cell touch screen, an In-cell touch screen, and the like.
- FIG. 6 is a cross-sectional view showing the structure of an On-cell touch display panel.
- the display screen in the touch display panel is a liquid crystal display screen.
- the upper part may include a backlight source 100, an array substrate 110, a color filter substrate 120, and a cover plate 130 in this order.
- a liquid crystal layer 140 is disposed between the array substrate 110 and the color filter substrate 120, and the two are bonded by a frame sealer 150.
- the color film substrate 120 on the side far from the array substrate 110 may be provided with the touch electrode pattern 200 according to any of the above embodiments.
- the color film substrate 120 may be used as a touch screen.
- a control substrate, and an upper polarizer 160 may be disposed on the touch electrode pattern 200 on the color filter substrate 120, and then a cover plate 130 is further disposed on the upper polarizer 160 to form a touch display panel.
- the touch display panel For On-cell touch screen.
- the display screen in the above-mentioned touch display panel may also be other forms of display screens, such as an organic light emitting diode (OLED) display, or a light emitting diode (LED) display. This screen is not limited to this.
- OLED organic light emitting diode
- LED light emitting diode
- the touch substrate of the embodiment of the present disclosure can be applied to a keyboard.
- the main body of the keyboard is provided with the touch display panel described in the above embodiment.
- the touch display panel is a bar.
- the touch display panel is provided on the keyboard body. Surrounding area.
- FIG. 7 is a cross-sectional view illustrating a structure of a keyboard of an exemplary embodiment of the present disclosure.
- the touch display device provided in this embodiment may be a keyboard.
- a touch display panel is provided on the main body of the keyboard.
- the area where the touch display panel is provided may be referred to as a touch bar, and the touch display panel may be provided as a touch of the keyboard. Control the keys and realize the functions of the keys through touch, which can enrich the key functions of the keyboard, and can realize more key functions in a smaller space of the main body of the keyboard, which is beneficial to the thin and light design of the keyboard.
- the main body 300 of the keyboard is provided with a touch display panel 400, and the main body 300 is provided with mechanical keys 310 arranged in a certain regular pattern.
- FIG. 7 only schematically illustrates the various mechanical devices.
- the type key 310 does not represent the actual arrangement of the mechanical keys 310.
- the touch The control display panel 400 is designed in a bar shape and is arranged in a peripheral area of the main body 300, so that the arrangement of the existing keys can not be affected.
- FIG. 8 is a schematic diagram showing a structure of a touch substrate according to the related art.
- a touch electrode pattern on a touch substrate in a touch display panel provided on a keyboard for a related art is provided.
- the touch electrode pattern includes a driving electrode 02 and a driving electrode 02 provided on a substrate substrate 01.
- the driving electrode 02 includes a whole driving electrode block distributed along the first direction (ie, lateral direction) of the base substrate.
- the sensing electrode 03 includes a plurality of sensing electrode blocks 031 distributed along the first direction of the base substrate.
- the driving electrode 02 The sensing electrode 03 is provided in two layers, and the two electrodes are insulated by an insulating layer.
- the touch display panel provided on the keyboard As shown in FIG. 8, in the touch substrate of the touch display panel, only one row of the driving electrode 02 and the sensing electrode 03 is provided along the first direction of the substrate 10.
- the substrate 10 is further provided with a driving electrode line 04 and an induction electrode line 05, and the two sides of the driving electrode 02 are respectively connected to a driving electrode line 04, and each of the sensing electrode blocks 031 is respectively connected to a sensing electrode line 05.
- a touch display panel formed using a touch substrate with a touch electrode pattern of this structure has, for example, a display area size of about 7 mm * 300 mm, and the touch display pattern is disposed in the display area, which is located in a peripheral area on the upper side of the substrate 01 (that is, Non-display area) and the width L3 of the peripheral area below the base substrate 01 is, for example, 5 mm, and the width L4 of the peripheral area on the left and right sides of the substrate 01 is, for example, 2 mm.
- Each sensing electrode block The size of the touch area is, for example, 5mm * 5mm.
- the driving electrode leads and the sensing electrode leads each have a bonding pin, such as the terminal 06 shown in FIG. 8. If the terminal is disposed in the peripheral area on the lower side of the substrate 01, the length of the connection area (which may be referred to as a bonding area) that the terminal needs to occupy is at least 13 mm, which is far beyond the width L3 of the peripheral area on the lower side.
- a touch display panel made of the above-mentioned touch electrode pattern cannot be used. It meets the requirements for setting a touch display area on the remaining space of the keyboard body.
- FIG. 9 is a schematic diagram of a structure of a touch substrate according to an exemplary embodiment of the present disclosure.
- the driving electrode has a plurality of electrodes connected to each other (that is, connected end to end).
- the driving electrode portion 20 includes a plurality of sensing electrode blocks 30 for sensing electrodes.
- the driving electrodes are connected to a driving electrode lead 41.
- Each sensing electrode block 30 is connected to a sensing electrode lead 42 respectively.
- the terminals 421 of the sensing electrode lead 42 are all located in a peripheral area on the left side of the base substrate 10, that is, a non-display area.
- a touch display panel made of a touch substrate with the above structure can be applied to a keyboard.
- the number of driving electrode leads and sensing electrode leads in the touch display substrate can be controlled within 50, and the driving electrode leads and the The terminals of the sensing electrode lead are arranged in the peripheral area on the left or right side of the substrate, that is, the non-display area.
- the width of the peripheral area on the left or right side can meet the required width for placing the terminals, and meet the requirements of the terminal occupation. Space requirements. Therefore, the touch display panel manufactured by using the above-mentioned touch electrode pattern can meet the requirements for setting a touch display area in the remaining space of the keyboard.
- touch display device is not limited to a keyboard, and may also be other types of touch display devices, such as a tablet computer, a mobile terminal, and the like.
- the touch display panel may use the touch electrode pattern described in the above embodiment to meet the requirements of the touch display device for the touch display panel. Space requirements.
- FIG. 10 illustrates a flowchart of a touch driving method according to an embodiment of the present disclosure.
- the touch driving method is used to drive the touch substrate according to any one of the foregoing embodiments, and the touch driving method includes:
- Step S1 applying a driving signal to the driving electrodes in the touch substrate
- Step S2 Detecting a signal change before and after a touch occurs to locate a touch position, wherein the signal change is a signal change between a touched sensing electrode region and a driving electrode in the sensing electrode block.
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Abstract
Description
Claims (20)
- 一种触控基板,包括:衬底基板,所述衬底基板上形成有触控电极图形,所述触控电极图形包括至少一个电极组,每个电极组包括沿所述衬底基板的第一方向排列成行且绝缘设置的驱动电极和感应电极;在每一个电极组中,所述驱动电极具有多个相互连接的驱动电极部,所述感应电极包括多个感应电极块;各所述驱动电极部分别位于相邻的两个所述感应电极块之间;所述感应电极块具有面积不同的多个感应电极区域。
- 根据权利要求1所述的触控基板,其中所述多个驱动电极部首尾相连并且以折线形式沿所述衬底基板的所述第一方向布置。
- 根据权利要求1或2所述的触控基板,其中,每个驱动电极部的相对两侧分别设置有一个所述感应电极块。
- 根据权利要求1-3中任一项所述的触控基板,其中,位于沿与所述第一方向相交的第二方向延伸的各个驱动电极部中的每个的一侧的感应电极块沿所述第二方向的宽度随着远离该驱动电极部而逐步减小;并且位于所述驱动电极部另一侧的感应电极块沿所述第二方向的宽度随着远离该驱动电极部而逐步减小。
- 根据权利要求4所述的触控基板,其中,每个感应电极块的形状为三角形或者梯形。
- 根据权利要求5所述的触控基板,其中每个感应电极块具有直角三角形,并且每个感应电极块的一条直角边和斜边分别平行于两个相邻的驱动电极部。
- 根据权利要求6所述的触控基板,其中每个感应电极块的长直角边的长度在10-30mm的范围内;并且每个感应电极块的短直角边的长度在4-10mm的范围内。
- 根据权利要求7所述的触控基板,其中每个感应电极块的两条直角边的长度分别是7mm和20mm。
- 根据权利要求5所述的触控基板,其中每个感应电极块具有直角梯形;每个感应电极块的下底和斜腰分别平行于两个相邻的驱动电极部。
- 根据权利要求1-9任一项所述的触控基板,其中,所述驱动电极和所述感应电极位于同一层,且各驱动电极部与各感应电极块之间相互间隔布置。
- 根据权利要求1-10任一项所述的触控基板,其中,所述驱动电极和所述感应电极均具有金属网格状结构。
- 根据权利要求2-11任一项所述的触控基板,其中,相邻的两个驱动电极部的延伸方向呈第一角度,所述第一角度为锐角。
- 根据权利要求12所述的触控基板,其中,在所述相邻的两个驱动电极部中,其中一个驱动电极部的延伸方向平行于所述第二方向,另一个驱动电极部的延伸方向与所述第二方向的夹角为所述第一角度。
- 根据权利要求1-13中任一项所述的触控基板,其中,每个驱动电极部为条形。
- 根据权利要求1-14任一项所述的触控基板,还包括设置在所述衬底基板上的多条驱动电极引线和多条感应电极引线;所述驱动电极分别与对应的驱动电极引线连接;并且所述各感应电极块分别与对应的感应电极引线连接。
- 根据权利要求15所述的触控基板,还包括各驱动电极引线的接线端和各感应电极引线的接线端,其中各驱动电极引线的接线端和各感应电极引线的接线端均位于所述衬底基板的同一侧的非显示区域。
- 根据权利要求1-16任一项所述的触控基板,其中,所述衬底基板的与设置有触控电极图形一面相对的一面上还设置有彩色滤光层。
- 一种触控基板的触控驱动方法,所述触控基板包括:衬底基板,所述衬底基板上形成有触控电极图形,所述触控电极图形包括至少一个电极组,每个电极组包括沿所述衬底基板的第一方向排列成行且绝缘设置的驱动电极和感应电极;在每一个电极组中,所述驱动电极具有多个相互连接的驱动电极部,所述感应电极包括多个感应电极块;各所述驱动电极部分别位于相邻的两个所述感应电极块之间;所述感应电极块具有面积不同的多个感应电极区域,其中,所述驱动方法包括:向所述驱动电极施加驱动信号;检测发生触控前后的信号变化,以确定触控基板上的被触控的位置,其中,所述信号变化为感应电极块中被触控的感应电极区域与 所述驱动电极之间的信号变化。
- 一种触控显示面板,包括权利要求1-17任一项所述的触控基板。
- 一种触控显示装置,包括权利要求19所述的触控显示面板。
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CN108829297B (zh) * | 2018-06-21 | 2020-12-11 | 京东方科技集团股份有限公司 | 触控基板、触控显示面板、触控显示装置和触控驱动方法 |
CN111142709B (zh) * | 2019-12-27 | 2024-02-23 | 上海摩软通讯技术有限公司 | 一种触控面板及显示装置 |
CN211698920U (zh) * | 2020-07-23 | 2020-10-16 | 深圳市汇顶科技股份有限公司 | 触摸传感器、触摸检测装置和电子设备 |
US11327619B2 (en) * | 2020-09-22 | 2022-05-10 | Elo Touch Solutions, Inc. | Touchscreen device with non-orthogonal electrodes |
US11558686B2 (en) * | 2020-12-02 | 2023-01-17 | Google Llc | Knob-like input for a hearable device |
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- 2018-06-21 CN CN201810645537.1A patent/CN108829297B/zh not_active Expired - Fee Related
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CN108829297B (zh) | 2020-12-11 |
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