CN112162661A - Touch control display panel - Google Patents
Touch control display panel Download PDFInfo
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- CN112162661A CN112162661A CN202011164771.6A CN202011164771A CN112162661A CN 112162661 A CN112162661 A CN 112162661A CN 202011164771 A CN202011164771 A CN 202011164771A CN 112162661 A CN112162661 A CN 112162661A
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- touch
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- display panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Position Input By Displaying (AREA)
Abstract
The application provides a touch-control display panel, touch-control display panel include touch-control display area and with the adjacent non-display area in touch-control display area, touch-control display panel includes: a substrate; a cathode disposed on the substrate; the touch electrode layer is arranged on the cathode and is positioned in the touch display area; and the touch integrated circuit is arranged on the substrate and positioned in the non-display area, and is respectively connected with each touch electrode through a plurality of touch wires. This application is through to the negative pole patterning in the touch-control display panel, arbitrary two in the touch-control electrode group, keep away from the touch-control integrated circuit touch-control electrode group with the overlapping area of negative pole is less than and is close to the touch-control integrated circuit touch-control electrode group with the overlapping area of negative pole makes the touch-control electrode with the negative pole has differential capacitance to improve because of the touch-control performance difference problem that the line impedance brought is walked in the touch-control, promote product touch-control performance.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch display panel.
Background
The display device has wide application space in vehicle-mounted, mobile phone, tablet, computer and television products, and an important touch technology of the capacitive touch panel is self-contained, and the touch function can be realized through a layer of metal.
However, in the conventional touch pattern design, the touch sensing block and the touch signal line may be formed by using the same layer of metal; the lengths of signal lines connecting different touch sensing blocks are different, and the corresponding impedances are also different, so that the RC loading (touch delay) problem can cause the touch characteristics of the touch device in the near driving area and the far driving area to be different, and the touch performance is affected.
Disclosure of Invention
The application provides a touch display panel, which solves the problem of touch performance difference caused by the impedance of a touch signal line, reduces the response time of touch operation and improves the touch performance of products.
In order to realize the functions, the technical scheme provided by the application is as follows:
a touch display panel including a touch display area and a non-display area adjacent to the touch display area, the touch display panel comprising:
a substrate;
a cathode disposed on the substrate;
the touch electrode layer is arranged on the cathode and positioned in the touch display area, and comprises a plurality of touch electrodes arranged in an array;
the touch integrated circuit is arranged on the substrate and positioned in the non-display area, and is respectively connected with each touch electrode through a plurality of touch wires;
the touch electrode layer comprises at least two groups of touch electrode groups, each touch electrode group at least comprises a row of touch electrodes, and in any two touch electrode groups, the overlapping area of the touch electrode group far away from the touch integrated circuit and the cathode is smaller than the overlapping area of the touch electrode group close to the touch integrated circuit and the cathode.
In the touch display panel, the cathode includes a plurality of cathode slots, and each touch electrode at least corresponds to one cathode slot; the area of the cathode slot corresponding to the touch electrode group far away from the touch integrated circuit is larger than the area of the cathode slot corresponding to the touch electrode group close to the touch integrated circuit.
In the touch display panel of the present application, an area of the cathode slot corresponding to any one of the touch electrodes in the touch electrode group away from the touch integrated circuit is larger than an area of the cathode slot corresponding to any one of the touch electrodes in the touch electrode group close to the touch integrated circuit.
In the touch display panel of the present application, in any one of the touch electrode groups, the overlapping areas of the touch electrodes located in the same row and the cathode open grooves are the same.
In the touch display panel of the application, the touch electrode group includes two rows of touch electrodes at least, and any one of the touch electrode groups is located in each of the same row of touch electrodes and the overlapping area of the cathode slot is the same, or is far away from the touch integrated circuit of the touch electrodes and the overlapping area of the cathode slot are larger than and close to the touch integrated circuit of the touch electrodes and the overlapping area of the cathode slot.
In the touch display panel of the application, the shape of the cathode slot is a broken line type or an arc line type.
In the touch display panel of the present application, the touch display area includes a plurality of sub-pixel areas, and the cathode open groove is located between each of the sub-pixel areas.
In the touch display panel, any two of the sub-pixel regions can be connected through the cathode.
In the touch display panel, the touch electrode is made of an opaque material; and light holes are formed in the positions, corresponding to the sub-pixel areas, of the touch electrodes.
In the touch display panel of the application, the light holes completely cover the corresponding sub-pixel areas.
Has the advantages that: this application is through to in the touch-control display panel the negative pole patterning is handled, arbitrary two in the touch-control electrode group, keep away from touch-control integrated circuit the touch-control electrode group with the overlapping area of negative pole is less than and is close to touch-control integrated circuit the touch-control electrode group with the overlapping area of negative pole makes the touch-control electrode with the negative pole has differential capacitance to improve because of the touch-control performance difference problem that touch-control signal line impedance brought, reduced touch-control operation's response time, promote product touch-control performance.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a conventional touch display panel;
fig. 2 is a schematic structural diagram of a touch display panel provided in the present application;
fig. 3 is a schematic structural diagram of a touch display panel according to an embodiment of the present disclosure;
fig. 4 is a top view of a touch display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a first lamination of an OLED display layer, a cathode, and a touch electrode in a touch display panel according to an embodiment of the present disclosure;
fig. 6 is a first top view of a cathode of a touch display panel according to an embodiment of the present disclosure;
fig. 7 is a second top view of the touch display panel cathode according to the present embodiment;
fig. 8 is a second lamination schematic diagram of an OLED display layer, a cathode and a touch electrode in the touch display panel according to the embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic structural diagram of a conventional touch display panel is shown.
In the prior art, the touch display panel includes a plurality of touch electrodes 61 and a plurality of touch traces 62 arranged in an array in the display area 100; the touch integrated circuit 70 is located in the non-display area 200, and the touch integrated circuit 70 is connected to each of the touch electrodes 61 through a plurality of touch traces 62, so as to implement a touch function.
In the above design, the lengths of the touch traces 62 connecting the different touch electrodes 61 are different, so that the corresponding impedances are different, thereby causing a touch delay problem to the display device and affecting the touch performance. Based on this, the application provides a touch display panel, can improve because of the touch-control performance problem that line impedance brought is walked in the touch-control.
Referring to fig. 2, a schematic structural diagram of a touch display panel provided in the present application is shown.
In the present application, the touch display panel includes a touch display area 100 and a non-display area 200 adjacent to the touch display area 100; the touch display panel includes a substrate 10; a cathode 40 disposed on the substrate 10; a touch electrode layer 60 disposed on the cathode 40 and located in the touch display area 100; and a touch integrated circuit 70 disposed on the substrate 10 and located in the non-display area 200.
The touch electrode layer 60 includes a plurality of touch electrodes 61 arranged in an array, and a plurality of touch traces 62, and the touch electrodes 61 and the touch traces 62 are arranged at intervals; the touch integrated circuit 70 is connected to each of the touch electrodes 61 through a plurality of touch traces 62, so as to implement a touch function.
In the present application, the touch electrode layer 60 includes at least two sets of touch electrode groups 601, each touch electrode group 601 includes at least one row (along the X direction in fig. 2) of the touch electrodes 61, and in any two touch electrode groups 601, an overlapping area of the touch electrode group 601 far away from the touch integrated circuit 70 and the cathode 40 is smaller than an overlapping area of the touch electrode group 601 near the touch integrated circuit 70 and the cathode 40.
In the present application, in the touch display panel, the inductive capacitance between the touch electrode 61 and the cathode 40 increases with the increase of the overlapping area of the touch electrode 61 and the cathode 40; the resistance of the touch trace 62 increases as the length of the touch trace 62 increases.
This application is through right in the touch-control display panel negative pole 40 patterning, arbitrary two in the touch-control electrode group 601, keep away from touch-control integrated circuit 70 touch-control electrode group 601 with the overlapping area of negative pole 40 is less than and is close to touch-control integrated circuit 70 touch-control electrode group 601 with the overlapping area of negative pole 40 makes touch-control electrode 61 with negative pole 40 has differentiation electric capacity, thereby improves because of the touch-control performance difference problem that 62 impedance of touch-control line brought has reduced touch-control operation's response time, promotes product touch-control performance.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 3, a schematic structural diagram of a touch display panel provided in the embodiment of the present application is shown.
In the present embodiment, the touch display panel includes a substrate 10; a thin film transistor layer 20 disposed on the substrate 10; an OLED display layer 30 disposed on the thin-film transistor layer 20; a cathode 40 disposed on the OLED display layer 30; an encapsulation layer 50 disposed on the cathode 40; and a touch electrode layer 60 disposed on the encapsulation layer 50.
In the embodiment, the substrate 10 is a flexible transparent PI substrate, mainly made of polyimide, and the PI material can effectively improve the light transmittance.
In this embodiment, the touch electrode layer 60 includes a plurality of touch electrodes 61 and a plurality of touch traces 62 arranged in an array, and the touch electrodes 61 and the touch traces 62 are arranged at intervals.
Referring to fig. 4, a top view of a touch display panel provided in the embodiment of the present application is shown.
In this embodiment, the touch display panel includes a touch display area 100 and a non-display area 200 adjacent to the touch display area 100; the touch display panel further includes a touch integrated circuit 70, and the touch integrated circuit 70 is disposed on the substrate 10 and located in the non-display area 200.
In this embodiment, the touch electrode layer 60 is located in the touch display area 100, the touch electrode layer 60 includes a plurality of touch electrodes 61 arranged in an array and a plurality of touch traces 62, and the touch electrodes 61 and the touch traces 62 are arranged at intervals; the touch integrated circuit 70 is connected to each of the touch electrodes 61 through a plurality of touch traces 62.
In the present embodiment, the touch electrode layer 60 includes four touch electrode groups 601, each of the touch electrode groups 601 includes two rows (along the X direction in fig. 4) of the touch electrodes 61 and three rows (along the Y direction in fig. 4) of the touch electrodes 61; in any two touch electrode groups 601, an overlapping area of the touch electrode group 601 far away from the touch integrated circuit 70 and the cathode 40 is smaller than an overlapping area of the touch electrode group 601 near the touch integrated circuit 70 and the cathode 40.
It should be noted that, in the present embodiment, the touch electrode layer 60 includes four touch electrode groups 601, each of the touch electrode groups 601 includes two rows of the touch electrodes 61 and three columns of the touch electrodes 61 for illustration only, and the present embodiment is not limited thereto.
In this embodiment, by performing patterning processing on the cathode 40 in the touch display panel, in any two touch electrode groups 601, an overlapping area of the touch electrode group 601 far away from the touch integrated circuit 70 and the cathode 40 is smaller than an overlapping area of the touch electrode group 601 near the touch integrated circuit 70 and the cathode 40, so that the touch electrode 61 and the cathode 40 have differential capacitance, thereby improving a touch performance difference problem caused by impedance of the touch trace 62, reducing response time of touch operation, and improving touch performance of a product.
Referring to fig. 5, a first lamination schematic diagram of an OLED display layer, a cathode and a touch electrode in a touch display panel provided in the present application is shown.
In this embodiment, the cathode 40 includes a plurality of cathode slots 401, the cathode slots 401 do not cut through the cathode 40; the cathode 40 is a one-piece cathode panel structure.
The shape of the cathode slot 401 includes, but is not limited to, a dogleg shape and an arc shape; each touch electrode 62 corresponds to at least one cathode slot 401.
In this embodiment, the OLED display layer 30 is provided with sub-pixel regions 301 distributed in an array corresponding to the touch display area 100; the cathode slots 401 are located between the sub-pixel regions 301, so that the cathode slots 401 are prevented from shielding the sub-pixel regions 301, and a display function is ensured.
In this embodiment, the material of the touch electrode 61 is a transparent material, and the material of the touch electrode 61 includes, but is not limited to, indium tin oxide, nano silver wire, and graphene.
Referring to fig. 5 and fig. 6, in the present embodiment, the area of the cathode slot 401 corresponding to the touch electrode group 601 far away from the touch integrated circuit 70 is larger than the area of the cathode slot 401 corresponding to the touch electrode group 601 close to the touch integrated circuit 70.
Further, in this embodiment, the area of the cathode slot 401 corresponding to any one of the touch electrodes 61 in the touch electrode group 601 far away from the touch integrated circuit 70 is larger than the area of the cathode slot 401 corresponding to any one of the touch electrodes 61 in the touch electrode group 601 close to the touch integrated circuit 70.
In this embodiment, the cathode slots 401 are disposed on the cathode 40 by patterning the cathode 40 in the touch display panel, and in the touch display panel, the area of the cathode slot 401 corresponding to any one of the touch electrodes 61 in the touch electrode group 601 far away from the touch integrated circuit 70 is larger than the area of the cathode slot 401 corresponding to any one of the touch electrodes 61 in the touch electrode group 601 close to the touch integrated circuit 70, so that the touch electrode 61 and the cathode 40 have differential capacitance, thereby improving the touch performance difference problem caused by the impedance of the touch trace 62, reducing the response time of the touch operation, and improving the touch performance of the product.
In this embodiment, in any touch electrode group 601, the overlapping area of each touch electrode 61 and the cathode slot 401 in the same row (along the X direction in fig. 4) is the same; in the same touch electrode group 601, the overlapping area of each touch electrode 61 and the cathode open slot 401 in the same column (along the Y direction in fig. 4) is the same.
In this embodiment, any two of the sub-pixel regions 301 can be connected through the cathode 40; the part of the cathode 40 corresponding to the sub-pixel area 301 is not independent, and the cathode 40 is a whole cathode panel structure.
Further, in the present embodiment, two adjacent sub-pixel regions 301 in the same row (along the X direction in fig. 4) are connected by the cathode 40; two adjacent sub-pixel regions 301 in the same column (along the Y direction in fig. 4) are connected by the cathode 40.
In this embodiment, two adjacent sub-pixel regions 301 in the same row are connected to each other through the cathode 40; two adjacent sub-pixel regions 301 in the same column are connected by the cathode 40 for illustration only, and the embodiment is not limited thereto.
Referring to fig. 5 and fig. 7, in the present embodiment, in any touch electrode group 601, the overlapping areas of the touch electrodes 61 and the cathode open slot 401 in the same row (along the X direction in fig. 7) are the same; the overlapping area of the touch electrode 61 far away from the touch integrated circuit 70 and the cathode slot 401 is larger than the overlapping area of the touch electrode 61 close to the touch integrated circuit 70 and the cathode slot 401.
Referring to fig. 8, a second lamination schematic diagram of an OLED display layer, a cathode and a touch electrode in a touch display panel provided in the present embodiment is shown.
In this embodiment, the touch electrode 61 is made of a non-transparent material; a light-transmitting hole 601 is formed in the position, corresponding to the sub-pixel area 301, of the touch electrode 61; the light-transmitting hole 601 completely covers the corresponding sub-pixel area 301; the light holes 601, the cathode slots 401 and the sub-pixel areas 301 correspond to each other one by one, so that the touch electrodes 61 are prevented from shielding the sub-pixel areas 301, light transmittance of the sub-pixel areas 301 is increased, and a display function is ensured.
The application provides a touch display panel. The touch display panel comprises a touch display area and a non-display area adjacent to the touch display area, and comprises: a substrate; a cathode disposed on the substrate; the touch electrode layer is arranged on the cathode and is positioned in the touch display area; and the touch integrated circuit is arranged on the substrate and positioned in the non-display area, and is respectively connected with each touch electrode through a plurality of touch wires.
This application is through to in the touch-control display panel the negative pole patterning, arbitrary two in the touch-control electrode group, keep away from the touch-control integrated circuit touch-control electrode group with the overlapping area of negative pole is less than and is close to the touch-control integrated circuit touch-control electrode group with the overlapping area of negative pole makes the touch-control electrode with the negative pole has differential capacitance to improve because of the touch-control moves the touch-control performance difference problem that line impedance brought, promote product touch-control performance.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The touch display panel provided by the embodiment of the present application is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A touch display panel including a touch display area and a non-display area adjacent to the touch display area, the touch display panel comprising:
a substrate;
a cathode disposed on the substrate;
the touch electrode layer is arranged on the cathode and positioned in the touch display area, and comprises a plurality of touch electrodes arranged in an array;
the touch integrated circuit is arranged on the substrate and positioned in the non-display area, and is respectively connected with each touch electrode through a plurality of touch wires;
the touch electrode layer comprises at least two groups of touch electrode groups, each touch electrode group at least comprises a row of touch electrodes, and in any two touch electrode groups, the overlapping area of the touch electrode group far away from the touch integrated circuit and the cathode is smaller than the overlapping area of the touch electrode group close to the touch integrated circuit and the cathode.
2. The touch display panel of claim 1, wherein the cathode comprises a plurality of cathode slots, and each of the touch electrodes corresponds to at least one of the cathode slots; the area of the cathode slot corresponding to the touch electrode group far away from the touch integrated circuit is larger than the area of the cathode slot corresponding to the touch electrode group close to the touch integrated circuit.
3. The touch display panel of claim 2, wherein an area of the cathode slot corresponding to any of the touch electrodes in the touch electrode group away from the touch integrated circuit is larger than an area of the cathode slot corresponding to any of the touch electrodes in the touch electrode group close to the touch integrated circuit.
4. The touch display panel according to claim 2, wherein in any of the touch electrode groups, overlapping areas of the touch electrodes in the same row and the cathode open groove are the same.
5. The touch display panel according to claim 4, wherein the touch electrode groups include at least two rows of the touch electrodes, and in any one of the touch electrode groups, the overlapping area of each touch electrode in the same row with the cathode slot is the same, or the overlapping area of the touch electrode far away from the touch integrated circuit with the cathode slot is larger than the overlapping area of the touch electrode close to the touch integrated circuit with the cathode slot.
6. The touch display panel of claim 2, wherein the cathode slot is shaped as a broken line or an arc.
7. The touch display panel of claim 2, wherein the touch display area comprises a plurality of sub-pixel areas, and the cathode slot is located between each of the sub-pixel areas.
8. The touch display panel of claim 7, wherein any two of the sub-pixel regions are connected via the cathode.
9. The touch display panel according to claim 8, wherein the touch electrode is made of a non-transparent material; and light holes are formed in the positions, corresponding to the sub-pixel areas, of the touch electrodes.
10. The touch display panel of claim 9, wherein the light hole completely covers the corresponding sub-pixel region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164771.6A CN112162661B (en) | 2020-10-27 | 2020-10-27 | Touch control display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164771.6A CN112162661B (en) | 2020-10-27 | 2020-10-27 | Touch control display panel |
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| CN112162661A true CN112162661A (en) | 2021-01-01 |
| CN112162661B CN112162661B (en) | 2022-09-27 |
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| CN202011164771.6A Active CN112162661B (en) | 2020-10-27 | 2020-10-27 | Touch control display panel |
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| CN112965626A (en) * | 2021-02-02 | 2021-06-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113064511A (en) * | 2021-03-09 | 2021-07-02 | 武汉华星光电半导体显示技术有限公司 | Touch control display panel |
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| CN113064511B (en) * | 2021-03-09 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | Touch control display panel |
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| Publication number | Publication date |
|---|---|
| CN112162661B (en) | 2022-09-27 |
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