CN111367429A - Touch control display panel - Google Patents
Touch control display panel Download PDFInfo
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- CN111367429A CN111367429A CN202010111209.0A CN202010111209A CN111367429A CN 111367429 A CN111367429 A CN 111367429A CN 202010111209 A CN202010111209 A CN 202010111209A CN 111367429 A CN111367429 A CN 111367429A
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- touch display
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Classifications
-
- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Position Input By Displaying (AREA)
Abstract
A touch display panel comprises a first substrate, a second substrate, a capacitance sensor layer and a shielding layer. One side of the first substrate is provided with a light emitting component array; the second substrate is parallel to the first substrate and has a gap with the first substrate; the capacitance sensor layer is arranged on one side, facing the first substrate, of the second substrate and comprises a plurality of capacitance sensing assemblies; the shielding layer is arranged between the capacitance sensor layer and the second substrate and provided with electromagnetic shielding patterns, and the electromagnetic shielding patterns shield part of the plurality of capacitance sensing assemblies. Among the plurality of capacitive sensing elements, those shielded by the electromagnetic shielding pattern are defined as pressure sensing units, and those not shielded by the electromagnetic shielding pattern are defined as touch sensing units.
Description
Technical Field
The present invention relates to a touch display panel sensing pressure using a pressure sensing unit and a touch sensing unit.
Background
Generally, touch display panels are roughly classified into three categories with respect to the location of a touch sensor: (1) in-cell (In-cell): the touch sensor is positioned in the light-emitting unit, wherein the light-emitting unit comprises two glass substrates and an organic light-emitting diode positioned between the two glass substrates; specifically, the touch sensor is located between the upper glass substrate and the organic light emitting diode. (2) On-cell: the touch sensor is located on the light emitting unit, that is, the touch sensor is located on and contacts the upper glass substrate. (3) Out-cell (Out-cell): the touch sensor is located outside the light emitting unit, that is, the touch sensor is located on the upper glass substrate without contacting the upper glass substrate.
In the touch display panel in which the touch sensor is located in the light emitting unit, since the distance between the position of the touch sensor and the finger of the user is relatively long and the touch sensor is relatively close to the display surface of the touch display panel, the touch sensor has the problems of false alarm and no touch during the pressure detection, and the touch sensor is susceptible to the noise of the display surface of the touch display panel. Therefore, how to solve the aforementioned disease nodes becomes a problem to be solved.
In view of the foregoing, the present inventors have devised and designed a touch display panel to overcome the drawbacks of the prior art and further enhance the industrial application.
Disclosure of Invention
In view of the above-mentioned problems, an object of the present invention is to provide a touch display panel for solving the problems in the prior art.
In view of the above, the present invention provides a touch display panel, which includes a first substrate, a second substrate, a capacitive sensor layer and a shielding layer. One side of the first substrate is provided with a light emitting component array; the second substrate is parallel to the first substrate and has a gap with the first substrate; the capacitance sensor layer is arranged on one side, facing the first substrate, of the second substrate and comprises a plurality of capacitance sensing assemblies; the shielding layer is arranged between the capacitance sensor layer and the second substrate and provided with electromagnetic shielding patterns, and the electromagnetic shielding patterns shield part of the plurality of capacitance sensing assemblies. In each of the plurality of capacitive sensing elements, the one shielded by the electromagnetic shielding pattern is defined as a pressure sensing unit, and the one not shielded by the electromagnetic shielding pattern is defined as a touch sensing unit. The touch control device is judged to be in a touch state or a falling state through the pressure sensing unit and the touch control sensing unit.
Preferably, the capacitive sensor layer includes a first insulating layer, and the plurality of capacitive sensing elements are disposed in the first insulating layer.
Preferably, the shielding layer includes a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer.
Preferably, the pattern of the electromagnetic shielding pattern is a grid structure with a square or circular distribution.
Preferably, the plurality of pressure sensing units are distributed among the plurality of touch sensing units.
Preferably, the light emitting device array includes a plurality of light emitting units, each of the plurality of light emitting units includes a light emitting body, two pixel defining layers, two gap pillars, and a cathode, the two pixel defining layers are disposed on two sides of the light emitting body based on the light emitting body, the two gap pillars are disposed on the two pixel defining layers, respectively, and the cathode covers the light emitting body, the two pixel defining layers, and the two gap pillars.
Preferably, the touch display panel of the present invention further includes a control circuit disposed under the first substrate and electrically connected to the cathode, the plurality of capacitive sensing elements and the electromagnetic shielding pattern.
Preferably, when the touch sensing unit performs touch detection, the capacitance variation between the touch sensing unit and the cathode changes and transmits a first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is lower than a threshold, and the control circuit sends out the touch signal according to the first signal. Through the mechanism, the touch condition of the user can be judged.
Preferably, when the pressure sensing unit detects the pressure, the capacitance variation between the touch sensing unit and the cathode changes and transmits the first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is higher than a threshold value and transmits the second signal back to the control circuit, and the control circuit transmits the heavy voltage signal according to the first signal and the second signal. Through the mechanism, whether the invention is in the falling state or not can be judged.
In view of the above, the present invention provides a touch display panel, which includes a first substrate, a second substrate, a first capacitive sensor layer and a second capacitive sensor layer. One side of the first substrate is provided with a light emitting component array; the second substrate is arranged in parallel with the first substrate, and a gap is reserved between the second substrate and the first substrate; the first capacitance sensor layer is arranged on one side, facing the first substrate, of the second substrate and comprises a plurality of first capacitance sensing assemblies; the second capacitive sensor layer is disposed between the second substrate and the first capacitive sensor layer, and includes a plurality of second capacitive sensing elements and an electromagnetic shielding pattern that shields the plurality of first capacitive sensing elements. Each of the plurality of first capacitive sensing elements is defined as a pressure sensing unit, and each of the plurality of second capacitive sensing elements is defined as a touch sensing unit. The touch control device is judged to be in a touch state or a falling state through the pressure sensing unit and the touch control sensing unit.
Preferably, the first capacitive sensor layer includes a first insulating layer, and the plurality of first capacitive sensing elements are disposed in the first insulating layer.
Preferably, the second capacitive sensor layer includes a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer.
Preferably, the pattern of the electromagnetic shielding pattern is a grid structure with a square or circular distribution.
Preferably, the plurality of pressure sensing units are distributed among the plurality of touch sensing units.
Preferably, the light emitting device array includes a plurality of light emitting units, each of the plurality of light emitting units includes a light emitting body, two pixel defining layers, two gap pillars, and a cathode, the two pixel defining layers are disposed on two sides of the light emitting body based on the light emitting body, the two gap pillars are disposed on the two pixel defining layers, respectively, and the cathode covers the light emitting body, the two pixel defining layers, and the two gap pillars.
Preferably, the touch display panel of the present invention further includes a control circuit disposed under the first substrate and electrically connected to the cathode, the plurality of first capacitive sensing elements, the plurality of second capacitive sensing elements, and the electromagnetic shielding pattern.
Preferably, when the touch sensing unit performs touch detection, the capacitance variation between the touch sensing unit and the cathode changes and transmits a first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is lower than a threshold, and the control circuit sends out the touch signal according to the first signal. Through the mechanism, the touch condition of the user can be judged.
Preferably, when the pressure sensing unit detects the pressure, the capacitance variation between the touch sensing unit and the cathode changes and transmits the first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is higher than a threshold value and transmits the second signal back to the control circuit, and the control circuit transmits the heavy voltage signal according to the first signal and the second signal. Through the mechanism, whether the invention is in the falling state or not can be judged.
As mentioned above, the touch display panel of the present invention determines that the touch display panel is in a touch or falling state through the pressure sensing unit and the touch sensing unit.
Drawings
Fig. 1 is a configuration diagram of a touch display panel according to a first embodiment of the invention.
Fig. 2 is a routing diagram of the electromagnetic shielding pattern of the first embodiment of the touch display panel of the invention.
Fig. 3 is a structural diagram of a pressure sensing unit and a touch sensing unit of a first embodiment of a touch display panel according to the invention.
Fig. 4 is a configuration diagram of a touch display panel according to a second embodiment of the invention.
Fig. 5A is a diagram of an electromagnetic shielding pattern of a touch display panel according to a first embodiment of the invention.
Fig. 5B is a diagram of an electromagnetic shielding pattern of the touch display panel according to a second embodiment of the present invention.
Fig. 5C is a diagram of an electromagnetic shielding pattern of the touch display panel according to a third embodiment of the present invention.
Fig. 6A is a diagram of a fourth embodiment of an electromagnetic shielding pattern of a touch display panel according to the present invention.
Fig. 6B is a diagram of a fifth embodiment of an electromagnetic shielding pattern of the touch display panel according to the invention.
Fig. 6C is a diagram of a sixth embodiment of an electromagnetic shielding pattern of a touch display panel according to the present invention.
In the figure:
10: first substrate
20: light emitting unit
21: luminous body
22: pixel definition layer
23: gap column
24: cathode electrode
30: capacitive sensor layer
31: capacitance sensing assembly
32. 62: a first insulating layer
40: shielding layer
41. 71: electromagnetic shielding pattern
42. 72: a second insulating layer
50: second substrate
60: first capacitive sensor layer
61: first capacitance sensing assembly
70: second capacitive sensor layer
73: second capacitance sensing assembly
PCB: control circuit
PS: pressure sensing unit
TS: touch sensing unit
Detailed Description
The advantages, features, and technical solutions of the present invention will be more readily understood and appreciated by referring to the exemplary embodiments and the accompanying drawings, which are set forth in greater detail, and may be embodied in different forms, and therefore should not be construed as limited to the embodiments set forth herein, but rather as a representative embodiment of the present invention which will provide a more complete and thorough understanding of the present invention and will fully convey the scope of the invention to those skilled in the art, and the present invention will only be defined by the appended claims.
It will be understood that, although the terms "first", "second", etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, the "first component," "first element," "first region," "first layer," and/or "first portion" discussed below can be termed "second component," "second element," "second region," "second layer," and/or "second portion" without departing from the spirit and teachings of the present invention.
Furthermore, the terms "comprises" and/or "comprising" mean the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Fig. 1 to fig. 3 are configuration diagrams of the touch display panel according to the first embodiment of the present invention, routing diagrams of the electromagnetic shielding pattern according to the first embodiment of the touch display panel according to the present invention, and structural diagrams of the pressure sensing unit and the touch sensing unit according to the first embodiment of the touch display panel according to the present invention, respectively. As shown in fig. 1 to 3, the present invention provides a touch display panel, which includes a first substrate 10, a second substrate 50, a capacitive sensor layer 30 and a shielding layer 40. One side of the first substrate 10 is provided with a light emitting assembly array; the second substrate 50 is disposed parallel to the first substrate 10 with a gap from the first substrate 10; the capacitive sensor layer 30 is disposed on a side of the second substrate 50 facing the first substrate 10, and the capacitive sensor layer 30 includes a plurality of capacitive sensing elements 31; the shielding layer 40 is disposed between the capacitive sensor layer 30 and the second substrate 50, the shielding layer 40 has an electromagnetic shielding pattern 41, and the electromagnetic shielding pattern 41 shields a portion of the capacitive sensing element 31. In each of the plurality of capacitive sensing elements 31, the one shielded by the electromagnetic shielding pattern 41 is defined as a pressure sensing unit PS, and the one not shielded by the electromagnetic shielding pattern 41 is defined as a touch sensing unit TS. The present invention is judged to be in a touch or fall state by the pressure sensing unit PS and the touch sensing unit TS.
In particular, the capacitive sensor layer 30 includes a first insulating layer 32, and the plurality of capacitive sensing elements 31 are disposed in the first insulating layer 32, that is, each capacitive sensing element 31 is covered by the first insulating layer 32; the shielding layer 40 includes a second insulating layer 42, and the electromagnetic shielding pattern 41 is disposed in the second insulating layer 42, that is, the electromagnetic shielding pattern 41 is covered by the second insulating layer 42. Because of the traces of the electromagnetic shielding patterns 41, not all of the capacitive sensing elements 31 are shielded by the electromagnetic shielding patterns 41, so that the pressure sensing units PS and the touch sensing units TS can be disposed in a staggered manner. That is, the pressure sensing units PS can be distributed among the touch sensing units TS, such that each pressure sensing unit PS is surrounded by the touch sensing units TS.
Furthermore, the vertical projection of the electromagnetic shielding pattern 41 of each pressure sensing unit PS on the second substrate 50 surrounds the vertical projection of the capacitance sensing element 31 of each pressure sensing unit PS on the second substrate 50, that is, the area of the electromagnetic shielding pattern 41 of each pressure sensing unit PS is larger than the area of the capacitance sensing element 31 of each pressure sensing unit PS; alternatively, the vertical projection of the electromagnetic shielding pattern 41 of each pressure sensing unit PS on the second substrate 50 is overlapped with the vertical projection of the capacitance sensing element 31 of each pressure sensing unit PS on the second substrate 50, that is, the area of the electromagnetic shielding pattern 41 of each pressure sensing unit PS is equal to the area of the capacitance sensing element 31 of each pressure sensing unit PS. In addition, the pressure sensing units PS and the touch sensing units TS are arranged in an array corresponding to the light emitting device array.
Here, the light emitting device array is described as follows: the light emitting assembly array comprises a plurality of light emitting units 20, and each light emitting unit 20 is arranged in an array form; each light-emitting unit 20 includes a light-emitting body 21, two pixel defining layers 22, two gap pillars 23, and a cathode 24, the two pixel defining layers 22 are disposed on two sides of the light-emitting body 21 with reference to the light-emitting body 21, each pixel defining layer PDL defines a display area of the light-emitting body 21, the two gap pillars 23 are disposed on the two pixel defining layers 22, respectively, and the cathode 24 covers the light-emitting body 21, the two pixel defining layers 22, and the two gap pillars 23.
Preferably, the line width of the electromagnetic shielding pattern 41 of each pressure sensing unit PS in the x axis is greater than the line width of each capacitance sensing element 31 in the x axis, and the length of the electromagnetic shielding pattern 41 of each pressure sensing unit PS in the y axis is greater than the length of each capacitance sensing element 31 in the y axis, so as to ensure the electromagnetic shielding effect. And the length of each capacitive sensing element 31 and the gap pillar 23 in the x-axis and the y-axis may be greater than 5 μm.
In addition, the touch display panel of the present invention further includes a control circuit PCB disposed under the first substrate 10 and electrically connected to the cathode 24, the plurality of capacitive sensing elements 31 and the electromagnetic shielding pattern 32. Here, it will be described with reference to table 1 that the control circuit PCB determines that the touch display panel of the present invention is in a touch state or a falling state as follows: (1) when the touch sensing unit TS detects touch, the capacitance variation between the touch sensing unit TS and the cathode 24 changes and transmits a first signal back to the control circuit PCB, the capacitance variation between the pressure sensing unit PS and the cathode 24 is lower than a threshold value (usually, the capacitance variation between the pressure sensing unit PS and the cathode 24 is 0 when detecting touch), the control circuit PCB sends out a touch signal according to the first signal, that is, the control circuit PCB determines that the touch display panel of the present invention is in a user touch state, and the control circuit PCB detects and determines a position touched by a user. (2) When the pressure sensing unit PS detects pressure, the capacitance variation between the Touch sensing unit TS and the cathode 24 changes and transmits a first signal back to the control circuit PCB, the capacitance variation between the pressure sensing unit PS and the cathode 24 is higher than a threshold value and transmits a second signal back to the control circuit PCB, the control circuit PCB sends a heavy pressure signal according to the first signal and the second signal, that is, the control circuit PCB determines that the Touch display panel of the present invention is in a falling state, and the control circuit PCB revises a baseline (baseline) or determines that the Touch display panel is a heavy pressure Gesture (Force Touch Gesture). The threshold value is changed when the touch display panel of the invention is in a falling state, and the value of the threshold value is not limited.
TABLE 1
It should be noted that the baseline is an average line of the first signal received last time, the first signal received currently is connected to form a signal line, and the signal line is subtracted from the average line to determine whether to update the baseline; the heavy pressing gesture is information that the control circuit PCB judges that the touch display panel is in a falling/heavy pressing state, the control circuit PCB transmits the heavy pressing gesture back to a host end (host) device, and the host end device executes the whole machine according to the heavy pressing gesture.
It should be mentioned that the control circuit PCB can be replaced with a battery and is matched with a microprocessor to determine whether the circuit is dropped or stressed. Specifically, the battery provides power to the touch display panel of the present invention, the microprocessor is electrically connected to the pressure sensing unit PS and the touch sensing unit TS, and the microprocessor determines that the touch display panel of the present invention is in a finger touch or a falling/heavy pressure condition according to the first signal and the second signal transmitted by the pressure sensing unit PS and the touch sensing unit TS.
Please refer to fig. 4, which is a configuration diagram of a touch display panel according to a second embodiment of the present invention. In the present embodiment, the configuration of the components with the same reference numerals is similar to that described above, and the description of the similarity is omitted here.
As shown in fig. 4, the second embodiment of the present invention differs from the first embodiment in a first capacitive sensor layer 60 and a second capacitive sensor layer 70. In detail, the first capacitive sensor layer 60 is disposed on a side of the second substrate 50 facing the first substrate 10, the first capacitive sensor layer 60 includes a plurality of first capacitive sensing elements 61 and a first insulating layer 62; the second capacitive sensor layer 70 is disposed between the second substrate 50 and the first capacitive sensor layer 60, the second capacitive sensor layer 70 includes a plurality of second capacitive sensing elements 73, a second insulating layer 72, and an electromagnetic shielding pattern 71, and the electromagnetic shielding pattern 71 shields the plurality of first capacitive sensing elements 61. Each of the plurality of first capacitive sensing elements 61 is defined as a pressure sensing unit PS, and each of the plurality of second capacitive sensing elements 73 is defined as a touch sensing unit TS.
In other words, the plurality of first capacitive sensing elements 61 are disposed in the first insulating layer 62, that is, each of the first capacitive sensing elements 61 is covered by the first insulating layer 62; the electromagnetic shielding pattern 71 and the plurality of second capacitive sensing elements 73 are disposed in the second insulating layer 72, that is, the electromagnetic shielding pattern 71 and the plurality of second capacitive sensing elements 73 are covered by the second insulating layer 72. The pressure sensing units PS and the touch sensing units TS are disposed in a staggered manner due to the routing of the electromagnetic shielding pattern 71, so that the pressure sensing units PS are distributed among the touch sensing units TS, that is, each pressure sensing unit PS is surrounded by the touch sensing units TS.
Furthermore, the vertical projection of the electromagnetic shielding pattern 71 of each pressure sensing unit PS on the second substrate 50 surrounds the vertical projection of the first capacitance sensing element 61 of each pressure sensing unit PS on the second substrate 50, that is, the area of the electromagnetic shielding pattern 71 of each pressure sensing unit PS is larger than the area of the first capacitance sensing element 61 of each pressure sensing unit PS; alternatively, the vertical projection of the electromagnetic shielding pattern 71 of each pressure sensing unit PS on the second substrate 50 is overlapped with the vertical projection of the first capacitance sensing element 61 of each pressure sensing unit PS on the second substrate 50, that is, the area of the electromagnetic shielding pattern 71 of each pressure sensing unit PS is equal to the area of the first capacitance sensing element 61 of each pressure sensing unit PS.
The first substrate 10 and the second substrate 50 may include, for example, a glass substrate, a quartz substrate, a substrate formed of a polymer resin, or a flexible substrate formed of a flexible material such as polyimide. The material of the polymer resin may include Polyethersulfone (PES), Polyacrylate (PA), Polyarylate (PAT), Polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (polyacrylate), Polyimide (PI), Polycarbonate (PC), cellulose triacetate (CAT, or TAC), Cellulose Acetate Propionate (CAP), and a combination thereof; the materials of the first insulating layers 32 and 62, the second insulating layers 42 and 71, and the pixel defining layer 22 may include silicon oxide (SiO), for examplex) Silicon nitride (SiN)x) Silicon oxynitride (SiON), silicon carbonitride (SiCN), silicon oxycarbide (SiOC), or aluminum oxide (AlO)x) And combinations thereof; the material of the gap pillar can be, for example, a positive photoresist or a negative photoresist; the material of the cathode 24 and the electromagnetic shielding patterns 41 and 71 may include, for example, at least one of indium (In), tin (Sn), aluminum (Al), gold (Au), platinum (Pt), indium (In), zinc (Zn), germanium (Ge), silver (Ag), lead (Pb), palladium (Pd), copper (Cu), gold beryllium (AuBe), germanium beryllium (BeGe), nickel (Ni), lead tin (PbSn), chromium (Cr), gold zinc (AuZn), titanium (Ti), tungsten (W), and titanium Tungsten (TiW); the light emitter 21 is an organic light emitting diode, and the material of the organic light emitting diode capable of emitting red light, blue light or green light comprises 4- (Dicyanomethylene) -2-tert-butyl-6- (1,1,7, 7-tetram)Derivatives related to ethylene julolidin-4-yl-vinyl) -4H-pyran, 4- (cyanomethyl) -2-tert-butyl-6- (1,1,7,7-tetramethyljulolidin-4-yl-vinyl) -4H-pyran (DCJTB), Polycyclic Aromatic Hydrocarbons (PAH), Quinacridone derivatives (quinacrine), 1H-pyrazolo [3,4-b ]]Green light derivatives of quinoxaline, Diarylanthracene derivatives (Diarylanthracene), Pyrene derivatives (Pyrene), metal-derived chelates (Tris 2-phenylpyridinato-C2, N) centered on Pt and Ir]iridium(III)(Ir(ppy)3)、Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III)(Flrpic)、Platinum octaethylporphyrin(PtOEP)、Tris(dibenzoylmethane)phenanthroline europium(III)(Eu(dbm)3(Phen))、bis(2-(2′-benzo[4,5-α]thienyl) pyrindinato-N, C3 ') iridium (acetylacetate) (Btp2Ir (acac)), Tris (1-phenylpyrazolato) iridium (Ir (ppz)3), Bis (2, 4-difluoropyrinato) (5- (pyridin-2-yl) -1H-tetrazolato) iridium (III) (FIrN4), mer-Tris (1-phenyl-3-methyl limidazoline-2-ylene-C, C (2)' iridium (III) (mer-Ir (pmi) 3)). The foregoing materials are merely exemplary, and other preferred materials are certainly possible without limiting the scope of the present invention.
Referring to fig. 5A to 5C, a diagram of a first embodiment of an electrical shielding pattern of a touch display panel according to the present invention, a diagram of a second embodiment of an electrical shielding pattern of a touch display panel according to the present invention, and a diagram of a third embodiment of an electrical shielding pattern of a touch display panel according to the present invention are shown. In the circular touch display panel, in one embodiment, as shown in fig. 5A, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be grid-shaped structures with square distribution. In another embodiment, as shown in fig. 5B, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be a grid structure with a circular distribution. In another embodiment, as shown in fig. 5C, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be cross-shaped.
Referring to fig. 6A to 6C, a fourth embodiment of an electrical shielding pattern of a touch display panel of the present invention, a fifth embodiment of an electrical shielding pattern of a touch display panel of the present invention, and a sixth embodiment of an electrical shielding pattern of a touch display panel of the present invention are shown. In the square touch display panel, in one embodiment, as shown in fig. 6A, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be grid-shaped structures distributed in a square shape. In another embodiment, as shown in fig. 6B, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be grid-shaped structures with square distribution. In another embodiment, as shown in fig. 5C, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may be cross-shaped.
In summary, the touch display panel of the present invention determines that the touch display panel is in a touch or falling state through the pressure sensing unit PS and the touch sensing unit TS. In summary, the touch display panel of the present invention has the advantages as described above, and has no error reporting and no touch problem.
The foregoing is by way of example only, and not limiting. It is intended that all equivalent modifications or variations without departing from the spirit and scope of the present invention shall be included in the scope of the appended claims.
Claims (18)
1. A touch display panel, comprising:
a first substrate, one side of which is provided with a light emitting component array;
a second substrate parallel to the first substrate and having a gap with the first substrate;
the capacitance sensor layer is arranged on one side of the second substrate, which faces the first substrate, and comprises a plurality of capacitance sensing components; and
a shielding layer disposed between the capacitive sensor layer and the second substrate, the shielding layer having an electromagnetic shielding pattern covering a portion of the plurality of capacitive sensing elements;
in each of the plurality of capacitive sensing elements, the one shielded by the electromagnetic shielding pattern is defined as a pressure sensing unit, and the one not shielded by the electromagnetic shielding pattern is defined as a touch sensing unit.
2. The touch display panel of claim 1, wherein the capacitive sensor layer comprises a first insulating layer, and the plurality of capacitive sensing elements are disposed in the first insulating layer.
3. The touch display panel of claim 1, wherein the shielding layer comprises a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer.
4. The touch display panel of claim 1, wherein the pattern of the electromagnetic shielding pattern is a grid structure with a square or circular distribution.
5. The touch display panel of claim 1, wherein the plurality of pressure sensing units are distributed among the plurality of touch sensing units.
6. The touch display panel of claim 1, wherein the light emitting device array comprises a plurality of light emitting units, each of the plurality of light emitting units comprises a light emitter, two pixel defining layers, two gap pillars, and a cathode, the two pixel defining layers are disposed on two sides of the light emitter with reference to the light emitter, the two gap pillars are disposed on the two pixel defining layers, and the cathode covers the light emitter, the two pixel defining layers, and the two gap pillars.
7. The touch display panel of claim 6, further comprising a control circuit disposed under the first substrate and electrically connected to the cathode, the plurality of capacitive sensing elements and the electromagnetic shielding pattern.
8. The touch display panel according to claim 7, wherein when the touch sensing unit is performing touch detection, a capacitance variation between the touch sensing unit and the cathode changes and transmits a first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is lower than a threshold, and the control circuit generates a touch signal according to the first signal.
9. The touch display panel according to claim 7, wherein when the pressure sensing unit detects pressure, a capacitance variation between the pressure sensing unit and the cathode changes to send a first signal back to the control circuit, a capacitance variation between the pressure sensing unit and the cathode exceeds a threshold value to send a second signal back to the control circuit, and the control circuit sends a re-pressing signal according to the first signal and the second signal.
10. A touch display panel, comprising:
a first substrate, one side of which is provided with a light emitting component array;
a second substrate disposed parallel to the first substrate with a gap therebetween;
the first capacitance sensor layer is arranged on one side of the second substrate, which faces the first substrate, and comprises a plurality of first capacitance sensing assemblies; and
a second capacitive sensor layer disposed between the second substrate and the first capacitive sensor layer, the second capacitive sensor layer including a plurality of second capacitive sensing elements and an electromagnetic shielding pattern shielding the plurality of first capacitive sensing elements;
each of the plurality of first capacitive sensing elements is defined as a pressure sensing unit, and each of the plurality of second capacitive sensing elements is defined as a touch sensing unit.
11. The touch display panel of claim 10, wherein the first capacitive sensor layer comprises a first insulating layer, and the plurality of first capacitive sensing elements are disposed in the first insulating layer.
12. The touch display panel of claim 10, wherein the second capacitive sensor layer comprises a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer.
13. The touch display panel of claim 10, wherein the pattern of the electromagnetic shielding pattern is a grid structure with a square or circular distribution.
14. The touch display panel of claim 10, wherein the plurality of pressure sensing units are distributed among the plurality of touch sensing units.
15. The touch display panel of claim 10, wherein the light emitting device array comprises a plurality of light emitting units, each of the plurality of light emitting units comprises a light emitter, two pixel defining layers, two gap pillars, and a cathode, the two pixel defining layers are disposed on two sides of the light emitter with respect to the light emitter, the two gap pillars are disposed on the two pixel defining layers, and the cathode covers the light emitter, the two pixel defining layers, and the two gap pillars.
16. The touch display panel of claim 15, further comprising a control circuit disposed under the first substrate and electrically connected to the cathode, the first capacitive sensing elements, the second capacitive sensing elements, and the electromagnetic shielding pattern.
17. The touch display panel according to claim 16, wherein when the touch sensing unit is performing touch detection, a capacitance variation between the touch sensing unit and the cathode changes and transmits a first signal back to the control circuit, the capacitance variation between the pressure sensing unit and the cathode is lower than a threshold, and the control circuit generates a touch signal according to the first signal.
18. The touch display panel of claim 16, wherein when the pressure sensing unit detects pressure, a capacitance variation between the pressure sensing unit and the cathode changes to send a first signal back to the control circuit, a capacitance variation between the pressure sensing unit and the cathode is higher than a threshold value to send a second signal back to the control circuit, and the control circuit sends a re-pressing signal according to the first signal and the second signal.
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| TWI646455B (en) * | 2017-07-04 | 2019-01-01 | 大陸商北京集創北方科技股份有限公司 | Pressure touch sensing device and its detection method |
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| US20150379921A1 (en) * | 2014-06-27 | 2015-12-31 | Apple Inc. | Organic Light-Emitting Diode Display With Supplemental Power Supply Distribution Paths |
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| TW202105154A (en) | 2021-02-01 |
| CN111367429B (en) | 2023-11-24 |
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