CN106354309B - Touch panel and display device - Google Patents
Touch panel and display device Download PDFInfo
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- CN106354309B CN106354309B CN201610751612.3A CN201610751612A CN106354309B CN 106354309 B CN106354309 B CN 106354309B CN 201610751612 A CN201610751612 A CN 201610751612A CN 106354309 B CN106354309 B CN 106354309B
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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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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch panel and a display device, and belongs to the technical field of touch. The touch panel provided by the invention comprises: the touch-control induction Rx electrode layer is arranged on the glass substrate; the Rx electrode layer has a plurality of Rx electrodes, and the Tx electrode layer has a plurality of Tx electrodes; the Rx electrodes and the Tx electrodes are arranged on the substrate in a crisscross manner; the Rx electrode layer and the Tx electrode layer are positioned on two sides of the glass substrate; a plurality of blank areas are arranged on the Rx electrode; the blank area and the area between the adjacent Rx electrodes are provided with auxiliary sensing units. The display device provided by the invention comprises the touch panel. According to the invention, the blank area is arranged on the Rx electrode, and the auxiliary sensing unit is arranged between the blank area and the Rx electrode and between the Rx electrode and the Rx electrode, so that part of adverse effects generated by fingers and the Rx electrode can be eliminated.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a touch panel and a display device.
Background
Touch panels, also known as touch screens, are devices that sense contact signals and analyze and identify the location of a touch point.
The touch panel comprises an insulating substrate, an Rx electrode and a Tx electrode, wherein a mutual capacitance is formed between the Tx electrode and the Rx electrode, when a conductive object such as a finger touches the touch panel, the capacitance at a touch point changes, and the charge measurement circuit recognizes the changed capacitance, so that the position touched by the finger is detected.
In the prior art, the Rx electrode and the Tx electrode are rectangular, and the intersection area of the Rx electrode and the Tx electrode is also rectangular, so that when a finger touches the touch panel, a capacitance is generated between the finger and the Rx electrode, and the capacitance can have an adverse effect on judging the touch position of the finger.
Disclosure of Invention
Accordingly, an objective of the embodiments of the present invention is to provide a touch panel and a display device, which are used for solving the problem that the touch position of a finger is adversely affected due to the capacitance formed between the finger and the Rx electrode in the conventional touch panel.
In order to solve the above problems, the present invention provides a touch panel and a display device:
the touch panel provided by the invention comprises: the touch-control induction Rx electrode layer is arranged on the glass substrate;
the Rx electrode layer has a plurality of Rx electrodes, and the Tx electrode layer has a plurality of Tx electrodes;
the Rx electrodes and the Tx electrodes are arranged on the substrate in a crisscross manner;
the Rx electrode layer and the Tx electrode layer are positioned on two sides of the glass substrate;
a plurality of blank areas are arranged on the Rx electrode;
the blank area and the area between the adjacent Rx electrodes are provided with auxiliary sensing units.
Preferably, the area of the auxiliary sensing unit arranged in the blank area is a first value M, the area of the auxiliary sensing unit arranged in the area between the Rx electrodes is a second value N, and the first value M is more than or equal to the second value N.
Preferably, the density of the auxiliary sensing units arranged in the blank area is a third value T, the density of the auxiliary sensing units arranged in the area between the Rx electrodes is a fourth value L, and the third value T is more than or equal to the fourth value L.
Preferably, a cross region of the Rx electrode and the Tx electrode, a half region between the Rx electrode and one of the Rx electrodes adjacent thereto, and a half region between the Rx electrode and the other of the Rx electrodes adjacent thereto are defined as one touch unit, and an area of the touch unit is 9.51×10.17mm2.
Preferably, the Tx electrode is rectangular.
The Rx electrode is rectangular.
Preferably, the blank area is rectangular or triangular.
Preferably, the auxiliary sensing unit is rectangular or triangular.
Preferably, the auxiliary sensing unit is indium tin oxide ITO.
The invention also provides a display device comprising the touch panel.
According to the touch panel and the display device provided by the invention, the blank area is arranged on the Rx electrode, and the auxiliary sensing unit is arranged between the blank area and the Rx electrode and between the Rx electrode and the Rx electrode, so that the adverse effect on the part for judging the touch position of the finger caused by capacitance between the finger and the Rx electrode can be eliminated.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a cross section of a touch panel according to an embodiment of the present invention;
fig. 2 is a schematic surface structure of a portion of a touch panel according to an embodiment of the invention;
fig. 3 shows a magnetic force diagram generated by a finger of a touch panel and a first auxiliary unit and a second auxiliary unit respectively according to an embodiment of the present invention;
fig. 4 is a schematic surface structure of a touch unit of a touch panel according to an embodiment of the present invention;
fig. 5 is a schematic view showing another surface structure of a touch unit of a touch panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cross section of a display device according to an embodiment of the present invention.
The reference numerals of fig. 1 are as follows:
a glass substrate 101, an Rx electrode layer 102, a Tx electrode layer 103;
the reference numerals of fig. 2 are as follows:
an Rx electrode 201, a tx electrode 202, a blank region 203, a first auxiliary sensing unit 204, and a second auxiliary sensing unit 205;
the reference numerals of fig. 3 are as follows:
a finger 301, a first magnetic force line 302, a first magnetic force line 3021 in the horizontal direction, a first magnetic force line 3022 in the vertical direction, a second magnetic force line 303, a second magnetic force line 3031 in the horizontal direction, and a second magnetic force line 3032 in the vertical direction;
the reference numerals in fig. 6 are as follows:
touch panel 601, display panel 602, optical module 603 and back plate 604.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
An embodiment of the present invention provides a touch panel, as shown in fig. 1, where the touch panel may include:
a glass substrate 101, a touch sensing Rx electrode layer 102, and a touch driving Tx electrode layer 103;
the Rx electrode layer 102 and the Tx electrode layer 103 are positioned at both sides of the glass substrate 101.
As shown in fig. 2, the Rx electrode layer 102 has a plurality of Rx electrodes 201, the Tx electrode layer 103 has a plurality of Tx electrodes 202, a plurality of blank areas 203 are disposed on the Rx electrodes 201, a first auxiliary sensing unit 204 is disposed on the blank areas 203, and a second auxiliary sensing unit 205 is disposed in an area between adjacent Rx electrodes 201.
The first auxiliary sensing unit 204, the second auxiliary sensing unit 205 and the Rx electrode 201 may be located at the same layer.
The Tx electrode 202 is rectangular, the entire surface of the rectangular Tx electrode 202 is ITO (Indium Tin Oxide), the Rx electrode 201 is rectangular, the Rx electrode 201 is provided with the blank area 203, and the rectangular Rx electrode 201 is ITO except the blank area 203.
The ITO is indium tin oxide, is a mixture of indium oxide and tin oxide, and is transparent and slightly brown when in a film state. The main characteristic of indium tin oxide is its combination of electrical conduction and optical transparency, which then decreases because in thin film deposition, high concentrations of charge carriers will increase the conductivity of the material. ITO is mainly used for manufacturing applications such as liquid crystal displays, flat panel displays, plasma displays, touch screens, and the like.
When no finger touches, magnetic lines of force are formed between the Rx electrode 201 and the Tx electrode 202, generating a mutual capacitance; when a human finger touches the touch panel, magnetic lines of force are also formed between the Tx electrode 202 and the human finger, and capacitance is generated, and magnetic lines of force between the Tx electrode 202 and the human finger replace a part of magnetic lines of force between the Rx electrode 201 and the Tx electrode 202, so that the mutual capacitance between the Rx electrode 201 and the Tx electrode 202 changes, and the charge measurement circuit recognizes the changed capacitance, so that the position touched by the finger is detected.
However, when the human finger touches the touch panel, magnetic lines of force are also formed between the human finger and the Rx electrode 201, and a coupling capacitance is generated. The path of capacitive coupling between the finger and the Rx electrode 201 may interfere with the mutual capacitance between the Tx electrode 202 and the Rx electrode 201, and affect the accuracy of determining the touch point position.
As shown in fig. 2, in the embodiment of the present invention, a first auxiliary sensing electrode 204 is disposed on the blank area 203 of the Rx electrode 201, a second auxiliary sensing electrode 205 is disposed between adjacent Rx electrodes 201, the first auxiliary sensing electrode 204 and the second auxiliary sensing electrode 205 are rectangular, and the first auxiliary sensing electrode 204 and the second auxiliary sensing electrode 205 are both ITO.
Since there is a certain blank area between the Rx electrode 201, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205, when a human finger touches the touch panel, the Rx electrode 201, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 on the touch point are very small and are densely arranged, so that the human finger can touch the Rx electrode 201, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 at the same time, and magnetic lines of force are formed between the human finger and the Rx electrode 201, the first auxiliary sensing electrode 204 and the second auxiliary sensing electrode 205, and magnetic lines of force generated between the finger and the Rx electrode 201, magnetic lines of force generated between the finger and the first auxiliary sensing electrode 204, and magnetic lines of force generated between the finger and the second auxiliary sensing unit 205 can be partially cancelled, thereby reducing adverse effects on determining the position of the finger.
Specifically, taking the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 as examples, the cancellation of magnetic lines will be described in detail.
When the human finger touches the touch panel, a part of the human finger 301 contacts the first auxiliary sensing unit 204 and a part contacts the second auxiliary sensing unit 205, as shown in fig. 3.
The first magnetic force lines 302 generated by the finger 301 and the first auxiliary sensing unit 204 may be decomposed into first magnetic force lines 3021 in a horizontal direction and first magnetic force lines 3022 in a vertical direction, the second magnetic force lines 303 generated by the finger 301 and the second auxiliary sensing unit 205 may be decomposed into second magnetic force lines 3031 in a horizontal direction and second magnetic force lines 3032 in a vertical direction, and the directions of the first magnetic force lines 3021 in the horizontal direction and the second magnetic force lines 3031 in the horizontal direction are opposite, so that they may be cancelled.
The intersection area of the Rx electrode and the Tx electrode, a half area between the Rx electrode and one of the Rx electrodes adjacent thereto, and a half area between the Rx electrode and the other of the Rx electrodes adjacent thereto are defined as a touch unit, and the area of the touch unit is 9.51×10.17mm2.
The surface structure of one of the touch units on the touch panel is shown in fig. 4, the area of the touch unit is 9.51 x 10.17mm2, and the touch unit with the area has better sensitivity to the finger induction of a person.
The area of the first auxiliary sensing unit 204 disposed in the blank area 203 is denoted as a first value M, and the area of the second auxiliary sensing unit 205 disposed in the area between the Rx electrodes is denoted as a second value N, where the first value M is greater than or equal to the second value N.
For example, as shown in fig. 4, the area of the first auxiliary sensing unit 204 disposed in the blank area 203 is denoted as a first value M, and the area of the second auxiliary sensing unit 205 disposed in the area between the Rx electrodes is denoted as a second value N. When a finger touches the touch panel, magnetic lines of force are generated between the finger of the person and the first auxiliary sensing unit 204, the second auxiliary sensing unit 205 and the Rx electrode, and the magnetic lines of force generated between the finger of the person and the first auxiliary sensing unit 204 cancel a part of the magnetic lines of force generated between the finger of the person and the Rx electrode, and cancel a part of the magnetic lines of force generated between the finger of the person and the second auxiliary sensing unit 205, and the magnetic lines of force generated between the finger of the person and the second auxiliary sensing unit 205 cancel a part of the magnetic lines of force generated between the finger of the person and the Rx electrode, in addition to the magnetic lines of force generated between the finger of the person and the first auxiliary sensing unit 204. Since magnetic lines of force generated by the human finger and the first auxiliary sensing unit 204 are offset by magnetic lines of force generated by a portion between the human finger and the blank region 203 adjacent to the Rx electrode in addition to the region parallel to the second auxiliary sensing unit 205 in the Rx electrode, the area of the first auxiliary sensing unit 204 needs to be larger than or equal to the area of the second auxiliary sensing unit 205, that is, the first value M is larger than or equal to the second value N, so that magnetic lines of force generated by the human finger and the first auxiliary sensing unit 204, the second auxiliary sensing unit 205 and the Rx electrode can be offset in the horizontal direction as much as possible, and adverse effects caused by the magnetic lines of force can be eliminated as much as possible.
The first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 may be provided in a larger rectangular shape or a smaller rectangular shape, as long as the area of the first auxiliary sensing unit 204 is equal to or larger than the area of the second auxiliary sensing unit 205.
In addition, the density of the first auxiliary sensing units 204 disposed in the blank region 203 may be denoted as a third value T, and the density of the second auxiliary sensing units 205 disposed in the region between the Rx electrodes may be denoted as a fourth value L, where the third value T is equal to or greater than the fourth value L.
Each of the first auxiliary sensing units 204 and the second auxiliary sensing units 205 may be rectangular with equal size, the blank area 203 is provided with a plurality of first auxiliary sensing units 204, a plurality of second auxiliary sensing units 205 are disposed between the Rx electrodes, the density of the arrangement of the plurality of first auxiliary sensing units 204 is denoted as the density of the first auxiliary sensing units 204, the density of the arrangement of the plurality of second auxiliary sensing units 205 is denoted as the density of the second auxiliary sensing units 205, and the density of the first auxiliary sensing units 204 is equal to or greater than the density of the second auxiliary sensing units 205. In this way, as many magnetic lines of force generated between the finger of the user and the first auxiliary sensing electrode 204, the second auxiliary sensing electrode 205, and the Rx electrode can be cancelled in the horizontal direction as much as possible, and thus adverse effects caused by the magnetic lines of force can be eliminated as much as possible.
In the above embodiment of the present invention, the blank area 203, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 are all rectangular, and in addition, the blank area 203, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 may be triangular, as shown in fig. 5.
The blank area 203 is triangular, which increases the area of ITO on the Rx electrode.
In addition to the above-mentioned embodiments, when the blank area 203 is rectangular, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 may be triangular, or the first auxiliary sensing unit 204 is triangular, the second auxiliary sensing unit 205 is rectangular, or the first auxiliary sensing unit 204 is rectangular, and the second auxiliary sensing unit is triangular.
When the blank area 203 is triangular, the first auxiliary sensing unit 204 and the second auxiliary sensing unit 205 may be rectangular, or the first auxiliary sensing unit 204 is triangular, the second auxiliary sensing unit 205 is rectangular, or the first auxiliary sensing unit 204 is rectangular, and the second auxiliary sensing unit 205 is triangular.
The embodiment of the present invention further provides a display device, as shown in fig. 6, including the touch panel 601 as described above, and further includes:
a display panel 602, an optical module 603 and a back plate 604;
the display panel 602 is located at the lower layer of the touch panel 601, the display surface of the display panel 602 is in contact with the touch panel 601, and the display surface of the display panel 602 is used for displaying various pictures; the optical module 603 is located at the lower layer of the display panel 602 and is in contact with the back surface of the display panel 602, the back plate 604 is located at the lower layer of the optical module 603, and the back plate 604 is used for supporting the optical module 603, the display panel 602 and the touch panel 601.
The display panel 602 may be a liquid crystal display panel, and may also be an Organic Light-Emitting Diode (OLED) display panel.
The display device provided by the embodiment of the invention can fully utilize the excellent characteristics of the touch panel, and can eliminate the adverse effect on the part of the touch position of the judgment finger caused by the capacitance generated between the finger and the Rx electrode, thereby improving the accuracy of the touch position judgment.
The display device provided by the embodiment of the invention can be any product or component with a display function, such as a mobile phone, a television, a display, a notebook computer, a navigator and the like.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A touch panel, comprising: the touch-control induction Rx electrode layer is arranged on the glass substrate;
the Rx electrode layer has a plurality of Rx electrodes, and the Tx electrode layer has a plurality of Tx electrodes;
the Rx electrodes and the Tx electrodes are arranged on the substrate in a crisscross manner;
the Rx electrode layer and the Tx electrode layer are positioned on two sides of the glass substrate;
a plurality of blank areas are arranged on the Rx electrode;
the blank area is provided with a first auxiliary sensing unit, and the area between the adjacent Rx electrodes is provided with a second auxiliary sensing unit;
in any touch unit of the touch panel, the area of the first auxiliary sensing unit is a first value M, the area of the second auxiliary sensing unit is a second value N, the first value M is greater than or equal to the second value N, and/or the density of the first auxiliary sensing unit is a third value T, the density of the second auxiliary sensing unit is a fourth value L, and the third value T is greater than or equal to the fourth value L;
the crossing area of the Rx electrode and the Tx electrode, a half area between the Rx electrode and one of the Rx electrodes adjacent thereto, and a half area between the Rx electrode and the other of the Rx electrodes adjacent thereto are defined as one touch unit.
2. The touch panel according to claim 1, whereinThe area of the touch unit is 9.51×10.17mm 2 。
3. The touch panel according to claim 1, wherein the Tx electrode is rectangular.
4. The touch panel of claim 1, wherein the Rx electrode is rectangular.
5. The touch panel of claim 1, wherein the blank area is rectangular or triangular.
6. The touch panel according to claim 1, wherein the auxiliary sensing unit is rectangular or triangular.
7. The touch panel of claim 1, wherein the auxiliary sensing unit is indium tin oxide, ITO.
8. A display device comprising the touch panel of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610751612.3A CN106354309B (en) | 2016-08-29 | 2016-08-29 | Touch panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610751612.3A CN106354309B (en) | 2016-08-29 | 2016-08-29 | Touch panel and display device |
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| CN106354309A CN106354309A (en) | 2017-01-25 |
| CN106354309B true CN106354309B (en) | 2023-10-20 |
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