TWI703491B - Touch display panel - Google Patents

Abstract

A touch display panel includes a first substrate, a second substrate, a capacitive sensor layer and a barrier layer. The array of the light-emitting element is disposed on the side of the first substrate. The second substrate is parallel to the first substrate and is above the first substrate. A gap is arranged between the first substrate and the second substrate. The capacitive sensor layer is disposed on the side of the second substrate facing to the first substrate. The capacitive sensor layer includes a plurality of capacitors. The barrier layer is disposed between the second substrate and the capacitive sensor layer and the barrier layer is provided with an electromagnetic shielding pattern. The electromagnetic shielding pattern shields a part of the plurality of capacitors. Wherein, the plurality of capacitors shielded by the electromagnetic shielding pattern are defined as the pressure sensor units, and the plurality of capacitors not shielded by the electromagnetic shielding pattern are defined as the touch sensor units.

Description

Touch display panel

The present invention relates to a touch display panel using a pressure sensing unit and a touch sensing unit to sense pressure.

Generally speaking, touch display panels are roughly divided into three categories in terms of the location of the touch sensor: (1) In-cell: the touch sensor is located in the light-emitting unit, where the light-emitting unit includes two The glass substrate and the organic light emitting diode located 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 the upper glass substrate and contacts the upper glass substrate. (3) 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 touching the upper glass substrate.

Among them, for the touch display panel in which the touch sensor is located in the light-emitting unit, the distance between the position of the touch sensor and the user's finger is relatively long, and the touch sensor is away from the touch display The display surface of the panel is close, which causes the touch sensor to have false alarm points 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 crux has become a problem to be solved.

In summary, the inventor of the present invention thought about and designed a touch display panel, in order to improve the lack of conventional technology, and further enhance the industrial application.

In view of the above-mentioned conventional problems, the purpose of the present invention is to provide a touch display panel to solve the problems faced by the conventional technology.

Based on the above objective, 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 an array of light-emitting elements; the second substrate is arranged parallel to the first substrate with a gap between it and the first substrate; the capacitive sensor layer is provided on the side of the second substrate facing the first substrate , The capacitance sensor layer includes a plurality of capacitance sensing elements; the shielding layer is arranged between the capacitance sensor layer and the second substrate, the shielding layer has an electromagnetic shielding pattern, and the electromagnetic shielding pattern is to shield the plurality of capacitance sensing elements in the part . Among the plurality of capacitive sensing elements, those covered by the electromagnetic shielding pattern are defined as pressure sensing units, and those not covered by the electromagnetic shielding patterns are defined as touch sensing units. Through the pressure sensing unit and the touch sensing unit, it is determined that the present invention is in a touch state or a falling state.

Preferably, the capacitive sensor layer includes a first insulating layer, and a 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-like structure with square or circular distribution.

Preferably, the pressure sensing units are distributed among the touch sensing units.

Preferably, the light-emitting element array includes a plurality of light-emitting units, each of the plurality of light-emitting units includes a light-emitting body, two layers of pixel definition layers, two gap pillars, and a cathode. The two-layer pixel definition layers are arranged to emit light based on the light-emitting body. On both sides of the body, two gap pillars are respectively arranged on the two pixel definition layers, and the cathode covers the luminous body, the two pixel definition layers and the two gap pillars.

Preferably, the touch display panel of the present invention further includes a control circuit, which is disposed under the first substrate and is electrically connected to the cathode, a plurality of capacitive sensing elements, and an electromagnetic shielding pattern.

Preferably, when the touch sensing unit is in touch detection, the capacitance change between the touch sensing unit and the cathode changes and the first signal is returned to the control circuit, and the capacitance between the pressure sensing unit and the cathode When the amount of change is lower than the threshold value, the control circuit sends out a touch signal according to the first signal. Through the aforementioned mechanism, the present invention can determine the status of the user's touch.

Preferably, when the pressure sensing unit is in pressure detection, the capacitance change between the touch sensing unit and the cathode is changed and the first signal is returned to the control circuit, and the capacitance change between the pressure sensing unit and the cathode is changed. Above the threshold, the second signal is sent back to the control circuit, and the control circuit sends out a heavy pressure signal according to the first signal and the second signal. Through the aforementioned mechanism, it can be determined whether the present invention is in a falling condition.

Based on the above objective, the present invention provides a touch display panel including a first substrate, a second substrate, a first capacitance sensor layer, and a second capacitance sensor layer. One side of the first substrate is provided with an array of light-emitting elements; the second substrate is arranged parallel to the first substrate and has a gap with the first substrate; the first capacitive sensor layer is arranged on the second substrate facing the first substrate On one side, the first capacitive sensor layer includes a plurality of first capacitive sensor elements; the second capacitive sensor layer is disposed between the second substrate and the first capacitive sensor layer, and the second capacitive sensor layer It includes a plurality of second capacitance sensing elements and an electromagnetic shielding pattern. The electromagnetic shielding pattern shields the plurality of first capacitance sensing elements. Among them, 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. Through the pressure sensing unit and the touch sensing unit, it is determined that the present invention is in a touch state or a falling state.

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-like structure with square or circular distribution.

Preferably, the pressure sensing units are distributed among the touch sensing units.

Preferably, the light-emitting element array includes a plurality of light-emitting units, each of the plurality of light-emitting units includes a light-emitting body, two layers of pixel definition layers, two gap pillars, and a cathode. The two-layer pixel definition layers are arranged to emit light based on the light-emitting body. On both sides of the body, two gap pillars are respectively arranged on the two pixel definition layers, and the cathode covers the luminous body, the two pixel definition 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, a plurality of first capacitance sensing elements, a plurality of second capacitance sensing elements, and electromagnetic Shield the pattern.

Preferably, when the touch sensing unit is in touch detection, the capacitance change between the touch sensing unit and the cathode changes and the first signal is returned to the control circuit, and the capacitance between the pressure sensing unit and the cathode When the amount of change is lower than the threshold value, the control circuit sends out a touch signal according to the first signal. Through the aforementioned mechanism, the present invention can determine the status of the user's touch.

Preferably, when the pressure sensing unit is in pressure detection, the capacitance change between the touch sensing unit and the cathode is changed and the first signal is returned to the control circuit, and the capacitance change between the pressure sensing unit and the cathode is changed. Above the threshold, the second signal is sent back to the control circuit, and the control circuit sends out a heavy pressure signal according to the first signal and the second signal. Through the aforementioned mechanism, it can be determined whether the present invention is in a falling condition.

Based on the above, the touch display panel of the present invention determines whether the present invention is in a touched or dropped state through the pressure sensing unit and the touch sensing unit.

10: The first substrate

20: Light-emitting unit

21: luminous body

22: Pixel definition layer

23: Clearance column

24: cathode

30: Capacitive sensor layer

31: Capacitive sensing element

32, 62: first insulating layer

40: shielding layer

41, 71: electromagnetic shielding pattern

42, 72: second insulating layer

50: second substrate

60: The first capacitive sensor layer

61: The first capacitive sensing element

70: second capacitive sensor layer

73: second capacitive sensing element

PCB: control circuit

PS: Pressure sensing unit

TS: Touch sensor unit

FIG. 1 is a configuration diagram of the first embodiment of the touch display panel of the present invention.

FIG. 2 is a wiring diagram of the electromagnetic shielding pattern of the first embodiment of the touch display panel of the present invention.

FIG. 3 is a structural diagram of the pressure sensing unit and the touch sensing unit of the first embodiment of the touch display panel of the present invention.

FIG. 4 is a layout diagram of the second embodiment of the touch display panel of the present invention.

FIG. 5A is a first aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

FIG. 5B is a second aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

FIG. 5C is a third aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

FIG. 6A is a fourth aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

FIG. 6B is a fifth aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

FIG. 6C is a sixth aspect diagram of the electromagnetic shielding pattern of the touch display panel of the present invention.

The advantages, features, and technical methods of the present invention will be described in more detail with reference to exemplary embodiments and the accompanying drawings to make it easier to understand, and the present invention can be implemented in different forms, so it should not be understood to be limited to what is here. The stated embodiments, on the contrary, for those with ordinary knowledge in the technical field, the provided embodiments will make this disclosure more thorough, comprehensive and complete to convey the scope of the present invention, and the present invention will only be additional Defined by the scope of the patent application.

It should be understood that although the terms "first", "second", etc. can be used to describe various elements, components, regions, layers and/or parts in the present invention, these elements, components, regions, layers and/or parts Should not be restricted by these terms. These terms are only used to refer to a component, part, area, A layer and/or part is distinguished from another element, component, region, layer and/or part. Therefore, the "first element", "first part", "first area", "first layer" and/or "first part" discussed below can be referred to as "second element", "second part" , "Second Area", "Second Layer" and/or "Second Part" without departing from the spirit and teachings of the present invention.

In addition, the terms "including" and/or "including" refer to the existence of the features, regions, wholes, steps, operations, elements, and/or components, but do not exclude one or more other features, regions, wholes, steps, operations , The presence or addition of elements, components, and/or combinations thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having definitions consistent with their meanings in the context of related technologies and the present invention, and will not be interpreted as idealized or overly formal Unless explicitly defined as such in this article.

Please refer to Figures 1 to 3, which are the layout diagram of the first embodiment of the touch display panel of the present invention, the wiring diagram of the electromagnetic shielding pattern of the first embodiment of the touch display panel of the present invention, and The structure diagram of the pressure sensing unit and the touch sensing unit of the first embodiment of the touch display panel of the present invention. As shown in FIGS. 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 an array of light emitting elements; the second substrate 50 is arranged parallel to the first substrate 10 with a gap with the first substrate 10; the capacitive sensor layer 30 is arranged on the second substrate 50 facing On one side of the first substrate 10, 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, and the shielding layer 40 has an electromagnetic shielding pattern 41 , The electromagnetic shielding pattern 41 is to shield part of the capacitive sensing element 31. Among them, each of the plurality of capacitive sensing elements 31 is electromagnetically shielded The person covered by 41 is defined as the pressure sensing unit PS, and the person not covered by the electromagnetic shielding pattern 41 is defined as the touch sensor unit TS. Through the pressure sensing unit PS and the touch sensing unit TS, it is determined that the present invention is in a touched or dropped state.

In other words, the capacitive sensor layer 30 includes a first insulating layer 32, and a 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 provided in the second insulating layer 42, that is, the electromagnetic shielding pattern 41 is covered by the second insulating layer 42. Among them, due to the wiring of the electromagnetic shielding pattern 41, not every capacitive sensing element 31 is shielded by the electromagnetic shielding pattern 41, so that the pressure sensing unit PS and the touch sensing unit TS can be arranged alternately with each other. In other words, the pressure sensing units PS can be distributed among the touch sensing units TS, so that each pressure sensing unit PS is surrounded by a plurality of 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 encloses the vertical projection of the capacitance sensing element 31 of each pressure sensing unit PS on the second substrate 50, that is, each pressure sensing unit PS The area of the electromagnetic shielding pattern 41 of the measuring unit PS is larger than the area of the capacitive sensing element 31 of each pressure sensing unit PS; or, the vertical projection of the electromagnetic shielding pattern 41 of each pressure sensing unit PS on the second substrate 50 overlaps each The vertical projection of the capacitive sensing element 31 of the 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 capacitive sensing element 31 of each pressure sensing unit PS area. In addition, corresponding to the arrangement of the light emitting element array, the pressure sensing unit PS and the touch sensing unit TS are arranged in an array.

Here, the composition of the light-emitting element array is described as follows: the light-emitting element array includes a plurality of light-emitting units 20, and each light-emitting unit 20 is arranged in an array form; wherein, each light-emitting unit 20 includes a light-emitting body 21, two layers of pixel definition layers 22, and two The gap pillar 23 and the cathode 24, the two pixel definition layers 22 are The luminous body 21 is used as a reference and is arranged on both sides of the luminous body 21. Each pixel definition layer 22 defines the display area of the luminous body 21. Two gap pillars 23 are respectively arranged on the two pixel definition layers 22, and the cathode 24 covers the light emission. A body 21, two pixel definition layers 22 and two gap pillars 23.

Preferably, the line width of the electromagnetic shielding pattern 41 of each pressure sensing unit PS on the x-axis is greater than the line width of each capacitive sensing element 31 on the x-axis, and the electromagnetic shielding pattern 41 of each pressure sensing unit PS on the y-axis The line length is greater than the line length of each capacitance sensing element 31 on the y-axis to ensure the electromagnetic shielding effect. Moreover, the length of each capacitance sensing element 31 and the gap pillar 23 on the x-axis and the y-axis can be greater than 5 μm.

In addition, the touch display panel of the present invention further includes a control circuit PCB, which is disposed under the first substrate 10 and is electrically connected to the cathode 24, a plurality of capacitive sensing elements 31, and an electromagnetic shielding pattern 41. Here, in conjunction with Table 1, it will be described that the control circuit PCB determines that the touch display panel of the present invention is in a touched or dropped condition as follows: (1) When the touch sensing unit TS is in touch detection, the touch sensing The capacitance change between the unit TS and the cathode 24 changes and the first signal is sent back to the control circuit PCB. The capacitance change between the pressure sensing unit PS and the cathode 24 is lower than the threshold (usually the pressure sensing unit PS and the cathode 24 The capacitance change between 24 is 0 during touch detection), 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 state of user touch, and controls The circuit PCB detects and judges the position touched by the user. (2) When the pressure sensing unit PS is in pressure detection, the capacitance change between the touch sensing unit TS and the cathode 24 changes and the first signal is returned to the control circuit PCB, and the pressure sensing unit PS and the cathode 24 change The capacitance change between the two is higher than the threshold value and the second signal is sent back to the control circuit PCB. The control circuit PCB sends out a heavy pressure signal according to the first signal and the second signal, that is, the control circuit PCB judges the touch display panel of the present invention In the state of falling, the control circuit PCB re-corrects the baseline or determines that it is a Force Touch Gesture. Among them, the threshold The value changes due to the state of the touch display panel of the present invention being dropped, so the threshold value is not limited.

It should be noted that the baseline is the average line of the first signal received last time. The first signal currently received will be connected to form a signal line, and the signal line will be subtracted from the average line to determine whether to update the baseline; The gesture is a message that the control circuit PCB determines that the touch display panel of the present invention is in a falling/stressed condition. The control circuit PCB will return the pressure gesture to the host device, and the host device will respond to the pressure Gesture execution machine.

It should be mentioned that the control circuit PCB can be replaced with a battery, and it can be used with a microprocessor to judge the drop/stress. 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 is based on the pressure sensing unit PS and the touch sensing The first signal and the second signal transmitted by the unit TS determine that the touch display panel of the present invention is touched by a finger or dropped/stressed.

Please refer to FIG. 4, which is a configuration diagram of the second embodiment of the touch display panel of the present invention. In this embodiment, the configuration of the components with the same component symbols is similar to that described above, and the similarities are not repeated here.

As shown in FIG. 4, the difference between the second embodiment of the present invention and the first embodiment lies in the first capacitance sensor layer 60 and the second capacitance sensor layer 70. In detail, the first capacitive sensor layer 60 is provided Placed on the side of the second substrate 50 facing the first substrate 10, the first capacitance sensor layer 60 includes a plurality of first capacitance sensing elements 61 and a first insulating layer 62; the second capacitance sensor layer 70 is provided 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. The electromagnetic shielding pattern 71 shields the plurality of first capacitance sensing elements 61. Among them, each plurality of first capacitance sensing elements 61 is defined as a pressure sensing unit PS, and each plurality of second capacitance sensing elements 73 is defined as a touch sensing unit TS.

In other words, a plurality of first capacitance sensing elements 61 are disposed in the first insulating layer 62, that is, each first capacitance sensing element 61 is covered by the first insulating layer 62; an electromagnetic shielding pattern 71 and a plurality of The second capacitance sensing element 73 is disposed in the second insulating layer 72, that is, the electromagnetic shielding pattern 71 and the plurality of second capacitance sensing elements 73 are covered by the second insulating layer 72. Wherein, due to the wiring of the electromagnetic shielding pattern 71, the pressure sensing units PS and the touch sensing units TS are arranged alternately, so that the pressure sensing units PS are distributed between the touch sensing units TS. That is, each pressure sensing unit PS is surrounded by a plurality of 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, each The area of the electromagnetic shielding pattern 71 of the pressure sensing unit PS is larger than the area of the first capacitance sensing element 61 of each pressure sensing unit PS; or, the electromagnetic shielding pattern 71 of each pressure sensing unit PS is perpendicular to the second substrate 50 The projection coincides with the vertical projection of the first capacitive 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 that of each pressure sensing unit PS The area of the first capacitance sensing element 61.

It should be noted that 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 can include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAT), polyetherimide (PEI), poly 2,6 naphthalene Polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate (polyallylate), poly(ethylene terephthalate, PET) polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT or TAC), cellulose acetate propionate (CAP), and combinations thereof; first insulation The materials of the layers 32 and 62, the second insulating layers 42 and 71, and the pixel definition layer 22 may include, for example, silicon oxide (SiO _x ), silicon nitride (SiN _x ), silicon oxynitride (SiON), silicon carbon nitride (SiCN ), silicon oxycarbide (SiOC) or aluminum oxide (AlO _x ) and combinations thereof; the material of the gap column may be, for example, a positive photoresist or a negative photoresist material; the material of the cathode 24 and the electromagnetic shielding patterns 41 and 71 may include, for example, 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-emitting body 21 is an organic light-emitting diode, and the light emitted by the organic light-emitting diode can be red, blue or green light. The material of the diode includes 4-(Dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran, 4-(dicyanomethylene)-2- tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran (DCJTB) and other related diffractors, polycyclic aromatic hydrocarbons (PAH) , Quinacridone, 1H-pyrazolo[3,4- b) quinoxaline's green light derivatives, diarylanthracene derivatives (Diarylanthracene), pyrene derivatives (Pyrene), Pt, Ir-centered metal derivative chelate (Tris[2-phenylpyridinato-C2,N]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)pyridinato-N,C3′)iridium(acetylacetonate)(Btp2Ir(acac)) , Tris(1-phenylpyrazolato)iridium(Ir(ppz)3), Bis(2,4-difluorophenylpyridinato)(5-(pyridin-2-yl)-1H-tetrazolate)iridium(III)(FIrN4), mer-Tris (1-phenyl-3-methylimidazolin-2-ylidene-C,C(2)'iridium(III)(mer-Ir(pmi)3)). The aforementioned materials are only examples, and of course other preferable materials can be used, and are not limited to the scope of the present invention.

Please refer to FIGS. 5A to 5C, the first aspect of the electrical shielding pattern of the touch display panel of the present invention, the second aspect of the electrical shielding pattern of the touch display panel of the present invention, and the touch of the present invention The third aspect of the electrical shielding pattern of the control display panel. In a 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-like structures distributed in squares. 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 have a cross distribution.

Please refer to FIGS. 6A to 6C, the fourth aspect of the electrical shielding pattern of the touch display panel of the present invention, the fifth aspect of the electrical shielding pattern of the touch display panel of the present invention, and the touch of the present invention The sixth pattern of the electrical shielding pattern of the control display panel. In a 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-like structures distributed in squares. In another embodiment, as shown in Figure 6B, the electromagnetic screen of the pressure sensing unit PS The masking patterns 41 and 71 may be grid-like structures distributed in squares. In another embodiment, as shown in FIG. 5C, the electromagnetic shielding patterns 41 and 71 of the pressure sensing unit PS may have a cross distribution.

In summary, in the touch display panel of the present invention, through the pressure sensing unit PS and the touch sensing unit TS, it is determined that the present invention is in a touched or dropped state. In conclusion, the touch display panel of the present invention has the above-mentioned advantages without the problems of false alarm points and no touch.

The above description is only illustrative, and not restrictive. Any equivalent modifications or alterations that do not depart from the spirit and scope of the present invention should be included in the scope of the attached patent application.

10: The first substrate

20: Light-emitting unit

21: luminous body

22: Pixel definition layer

23: Clearance column

24: cathode

30: Capacitive sensor layer

31: Capacitive sensing element

32: The first insulating layer

40: shielding layer

41: Electromagnetic shielding pattern

42: second insulating layer

50: second substrate

Claims (18)

A touch display panel includes: a first substrate, one side of the first substrate is provided with an array of light-emitting elements; a second substrate is provided in parallel with the first substrate, and is separated from the first substrate A gap; a capacitive sensor layer disposed on the side of the second substrate facing the first substrate, the capacitive sensor layer including a plurality of capacitive sensing elements; and a shielding layer disposed on the capacitor Between the sensor layer and the second substrate, the shielding layer has an electromagnetic shielding pattern, and the electromagnetic shielding pattern shields a portion of the plurality of capacitive sensing elements; wherein, in each of the plurality of capacitive sensing elements, The person covered by the electromagnetic shielding pattern is defined as a pressure sensing unit, and the person not covered by the electromagnetic shielding pattern is defined as a touch sensing unit. According to the touch display panel described in claim 1, wherein the capacitive sensor layer includes a first insulating layer, and the plurality of capacitive sensing elements are disposed in the first insulating layer. According to the touch display panel described in claim 1, wherein the shielding layer includes a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer. According to the touch display panel described in item 1 of the scope of patent application, the pattern of the electromagnetic shielding pattern is a grid-like structure distributed in a square or a circle. For the touch display panel described in claim 1, wherein the pressure sensing units are distributed among the touch sensing units. The touch display panel according to claim 1, wherein the light-emitting element array includes a plurality of light-emitting units, and each of the plurality of light-emitting units includes a light-emitting body, two pixel definition layers, two gap pillars and a cathode, The two pixel definition layers are arranged on both sides of the luminous body based on the luminous body, the two gap pillars are respectively arranged on the two pixel definition layers, and the cathode covers the luminous body, the two pixel definition layers and the luminous body. Two clearance columns. For example, the touch display panel described in item 6 of the scope of patent application 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 shield pattern. For the touch display panel described in item 7 of the scope of patent application, when the touch sensing unit is in touch detection, the capacitance change between the touch sensing unit and the cathode changes and returns a first A signal is sent to the control circuit, the capacitance change between the pressure sensing unit and the cathode is lower than a threshold value, and the control circuit sends out a touch signal according to the first signal. For the touch display panel described in item 7 of the scope of patent application, when the pressure sensing unit is under pressure detection, the capacitance change between the touch sensing unit and the cathode changes and returns a first signal to The control circuit, the capacitance change between the pressure sensing unit and the cathode is higher than a threshold value and returns a second signal to the control circuit, and the control circuit sends out a repetition according to the first signal and the second signal Pressure signal. A touch display panel includes: a first substrate, one side of the first substrate is provided with an array of light-emitting elements; a second substrate is provided in parallel with the first substrate, and is separated from the first substrate A gap; a first capacitive sensor layer disposed on a side of the second substrate facing the first substrate, the The first capacitance sensor layer includes a plurality of first capacitance sensing elements; and a second capacitance sensor layer is disposed between the second substrate and the first capacitance sensor layer, and the second capacitance sensor layer The sensor layer includes a plurality of second capacitance sensing elements and an electromagnetic shielding pattern. The electromagnetic shielding pattern shields the plurality of first capacitance sensing elements; wherein each of the plurality of first capacitance sensing elements is defined as one The pressure sensing unit, each of the plurality of second capacitive sensing elements is defined as a touch sensing unit. The touch display panel according to claim 10, wherein 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 . The touch display panel according to claim 10, wherein the second capacitive sensor layer includes a second insulating layer, and the electromagnetic shielding pattern is disposed in the second insulating layer. For the touch display panel described in item 10 of the scope of patent application, the pattern of the electromagnetic shielding pattern is a grid-like structure distributed in a square or a circle. For example, in the touch display panel described in claim 10, the pressure sensing units are distributed among the touch sensing units. The touch display panel according to claim 10, wherein the light-emitting element array includes a plurality of light-emitting units, and each of the plurality of light-emitting units includes a light-emitting body, two pixel definition layers, two gap pillars and a cathode, The two pixel definition layers are arranged on both sides of the luminous body based on the luminous body, the two gap pillars are respectively arranged on the two pixel definition layers, and the cathode covers the luminous body, the two pixel definition layers and the luminous body. Two clearance columns. For example, the touch display panel described in item 15 of the scope of patent application further includes a control circuit, The control circuit is disposed under the first substrate and is electrically connected to the cathode, the plurality of first capacitance sensing elements, the plurality of second capacitance sensing elements, and the electromagnetic shielding pattern. For the touch display panel described in item 16 of the scope of patent application, when the touch sensing unit is in touch detection, the capacitance change between the touch sensing unit and the cathode changes and returns a first A signal is sent to the control circuit, the capacitance change between the pressure sensing unit and the cathode is lower than a threshold value, and the control circuit sends out a touch signal according to the first signal. For the touch display panel described in item 16 of the scope of patent application, when the pressure sensing unit is under pressure detection, the capacitance change between the touch sensing unit and the cathode changes and returns a first signal to The control circuit, the capacitance change between the pressure sensing unit and the cathode is higher than a threshold value and returns a second signal to the control circuit, and the control circuit sends out a repetition according to the first signal and the second signal Pressure signal.

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