CN110703938B - Double-sided touch transparent display panel, driving method thereof and display device - Google Patents
Double-sided touch transparent display panel, driving method thereof and display device Download PDFInfo
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- CN110703938B CN110703938B CN201910877877.1A CN201910877877A CN110703938B CN 110703938 B CN110703938 B CN 110703938B CN 201910877877 A CN201910877877 A CN 201910877877A CN 110703938 B CN110703938 B CN 110703938B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- 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
Abstract
A double-sided touch transparent display panel and a driving method thereof, and a display device, wherein the display panel comprises a light-emitting layer of a double-sided display picture, a first transparent substrate, a second transparent substrate, a touch electrode and a control circuit; the side, far away from the light-emitting layer, of the first transparent substrate is a first touch surface, and the side, far away from the light-emitting layer, of the second transparent substrate is a second touch surface; the touch electrode is positioned on the first touch surface, the touch electrode comprises a plurality of signal points, the control circuit collects the signal variation of each signal point, and the touch position is judged to be positioned on the first touch surface or the second touch surface according to the signal variation. The invention judges the signal variation through the control circuit to determine whether the touch position is positioned on the first touch surface or the second touch surface, and only adopts the touch electrode positioned on one side of the display panel to realize the double-sided touch function at the same time, thereby simplifying the procedure and saving the cost.
Description
Technical Field
The invention relates to the technical field of display, in particular to a double-sided touch transparent display panel, a driving method thereof and a display device.
Background
Currently, the application range of transparent display devices is becoming wider and wider, such as billboards, meeting rooms, artificial intelligence, and the like. With the gradual expansion of the market, a demand is also put on a transparent display device with a double-sided touch function.
Fig. 1 shows a schematic structural diagram of a conventional double-sided touch transparent display panel, which includes an OLED light emitting layer 11, a first transparent substrate 121, a second transparent substrate 122, a first touch electrode 131 and a second touch electrode 132 for displaying images on both sides. The first transparent substrate 121 and the second transparent substrate 122 are respectively disposed at two sides of the OLED light emitting layer 11, the first touch electrode 131 is formed at a side of the first transparent substrate 121 away from the OLED light emitting layer 11, and the second touch electrode 132 is formed at a side of the second transparent substrate 122 away from the OLED light emitting layer 11. Therefore, the first touch electrode 131 and the second touch electrode 132 need to be manufactured respectively, which reduces the manufacturing efficiency and the product yield; in addition, the first touch chip 141 connected to the first touch electrode 131 and the second touch chip 142 connected to the second touch electrode 132 are required to be separately provided, so that the production cost is increased.
The foregoing description is provided for general background information and does not necessarily constitute prior art.
Disclosure of Invention
The invention aims to provide a double-sided touch transparent display panel, a driving method thereof and a display device, wherein a double-sided touch function is realized by only adopting a touch electrode positioned at one side of the display panel, so that the working procedure is simplified and the cost is saved.
The invention provides a double-sided touch transparent display panel, which comprises a luminous layer of a double-sided display picture, a first transparent substrate, a second transparent substrate, a touch electrode and a control circuit; the first transparent substrate and the second transparent substrate are respectively arranged on two sides of the light-emitting layer, one side of the first transparent substrate, which is far away from the light-emitting layer, is a first touch surface, and one side of the second transparent substrate, which is far away from the light-emitting layer, is a second touch surface; the touch electrode is positioned on the first touch surface, comprises a plurality of signal points, and is used for detecting a touch position and outputting a touch detection signal; the control circuit is connected with the touch electrode, acquires the signal variation of each signal point according to the touch detection signal, and judges whether the touch position is positioned on the first touch surface or the second touch surface according to the signal variation.
Further, when at least one signal variation is larger than a first threshold, the control circuit judges that the touch position is positioned on the first touch surface; the control circuit judges that the touch position is positioned on the second touch surface when any signal variation is not larger than the first threshold and at least one signal variation is larger than the second threshold; and when any signal variation is not larger than the second threshold value, the control circuit judges that no touch control is performed.
Further, the second threshold is 0.25 to 0.5 times of the first threshold.
Further, the control circuit comprises an acquisition module, a first judgment module, a second judgment module, a touch point calculation module and a function control module; the acquisition module is used for receiving the touch detection signals and acquiring the signal variation of each signal point according to the touch detection signals; the first judging module is used for judging whether at least one signal variation is larger than a first threshold value; if yes, controlling the double-sided touch transparent display panel to switch to a first touch mode; if not, transmitting the signal variation to a second judging module; the second judging module is used for judging whether at least one signal variation is larger than a second threshold value or not when any signal variation is not larger than the first threshold value; if yes, controlling the double-sided touch transparent display panel to switch to a second touch mode; if the touch control is not performed, judging that the touch control is not performed; the touch point calculating module is used for calculating a first touch coordinate according to the signal variation larger than the first threshold value and the corresponding signal point in the first touch mode; the touch point calculating module is further configured to calculate, in the second touch mode, a second touch coordinate according to the signal variation greater than the second threshold and the corresponding signal point; the function control module is used for executing an operation related to the first touch surface according to the first touch coordinate in the first touch mode; the function control module is further configured to execute, in the second touch mode, an operation related to the second touch surface according to the second touch coordinates.
Further, the light emitting layer includes at least one of an organic light emitting diode, a quantum dot light emitting diode, and a micro light emitting diode.
Further, the light emitting layer includes a plurality of pixel units, and an anode and a cathode are disposed in each pixel unit, and are formed of transparent conductive materials.
Further, the touch electrode comprises a plurality of first electrode strips, an insulating layer and a plurality of second electrode strips; the plurality of first electrode strips are insulated from each other at intervals and are positioned on the first touch surface, the insulating layer covers the plurality of first electrode strips, and the plurality of second electrode strips are insulated from each other at intervals and are positioned on the insulating layer; the first electrode bars and the second electrode bars are insulated and crossed.
Further, the plurality of first electrode bars are used for receiving touch driving signals, and the plurality of second electrode bars are used for detecting the touch positions and outputting the touch detection signals; or the plurality of first electrode strips are used for detecting the touch position and outputting the touch detection signal, and the plurality of second electrode strips are used for receiving the touch driving signal.
The invention also provides a driving method of the double-sided touch transparent display panel, which is applicable to any of the double-sided touch transparent display panels, and comprises the following steps:
collecting the signal variation of each signal point according to the touch detection signal;
judging whether at least one signal variation is larger than a first threshold value or not;
if the first touch control coordinate exists, calculating a first touch control coordinate according to the signal variation larger than the first threshold value and the corresponding signal point, and executing an operation related to the first touch control surface according to the first touch control coordinate;
if not, judging whether at least one signal variation is larger than a second threshold value; if the signal variation quantity is larger than the second threshold value, calculating a second touch coordinate according to the signal variation quantity and the corresponding signal point, and executing an operation related to the second touch surface according to the second touch coordinate; if the touch control is not performed, judging that the touch control is not performed.
The invention also provides a display device which comprises any one of the double-sided touch transparent display panels.
The invention provides a double-sided touch transparent display panel, a driving method thereof and a display device, wherein the size of signal variation is judged through a control circuit, and whether a touch position is positioned on a first touch surface or a second touch surface is determined.
Drawings
Fig. 1 is a schematic structural diagram of a double-sided touch transparent display panel in the prior art.
Fig. 2 is a schematic structural diagram of a dual-sided touch transparent display panel according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a touch electrode in the double-sided touch transparent display panel shown in fig. 2.
Fig. 4 is a schematic view of an application scenario of the double-sided touch transparent display panel shown in fig. 2.
Fig. 5 (a) is a schematic diagram of a signal variation amount acquisition result of a touch position on a first touch surface.
Fig. 5 (b) is a schematic diagram of a signal variation amount acquisition result of the touch position on the second touch surface.
Fig. 6 is a frame structure diagram of a control circuit in a dual-sided touch transparent display panel according to an embodiment of the invention.
Fig. 7 is a flow chart illustrating a driving method of a dual-sided touch transparent display panel according to an embodiment of the invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Fig. 2 is a schematic structural diagram of a dual-sided touch transparent display panel according to an embodiment of the invention. The double-sided touch transparent display panel includes a light emitting layer 21 for displaying images on both sides, a first transparent substrate 221, a second transparent substrate 222, a touch electrode 30, and a control circuit 40. The first transparent substrate 221 and the second transparent substrate 222 are respectively disposed at two sides of the light-emitting layer 21, wherein a side of the first transparent substrate 221 away from the light-emitting layer 21 is a first touch surface 20a, and a side of the second transparent substrate 222 away from the light-emitting layer 21 is a second touch surface 20b; the touch electrode 30 is located on the first touch surface 20a, and the second touch surface 20b is not provided with the touch electrode 30. The double-sided touch transparent display panel of the present embodiment can implement the double-sided touch function only by the touch electrode 30 on the first touch surface 20a and the control circuit 40 connected to the touch electrode 30.
The light emitting layer 21 includes a plurality of pixel units, and at least one of an Organic Light Emitting Diode (OLED), a quantum dot light emitting diode (QLED), and a micro light emitting diode (micro-LED) is disposed in each pixel unit. In this embodiment, taking the OLED light-emitting layer 21 as an example, an anode 211, an organic functional layer 212 and a cathode 213 are disposed in each pixel unit, and the pixel units are separated by a light-tight barrier 214. The anode 211 and the cathode 213 are formed of a transparent conductive material such as Indium Tin Oxide (ITO), indium Zinc Oxide (IZO), or the like, and light emitted from the OLED, QLED, or micro-LED is emitted toward the first touch surface 20a through the cathode 213 and also emitted toward the second touch surface 20b through the anode 211, so that the transparent display panel realizes double-sided display. The organic functional layer 212 includes a hole injection layer, a hole transport layer, a light emitting material layer, and an electron transport layer, which are sequentially stacked.
Referring to fig. 3, a schematic structural diagram of a touch electrode 30 in the present embodiment is shown, the touch electrode 30 is an On-cell touch electrode, and includes a plurality of first electrode strips 31, an insulating layer 32 and a plurality of second electrode strips 33, the plurality of first electrode strips 31 are insulated from each other at intervals and are located On the first touch surface 20a, the insulating layer 32 covers the first electrode layer, the plurality of second electrode strips 33 are insulated from each other at intervals and are located On the insulating layer 32, the first electrode strips 31 and the second electrode strips 33 are insulated from each other and are intersected, and the first electrode strips 31 and the second electrode strips 33 are all in a grid-like structure formed by intersecting wires. Further, the touch electrode 30 further includes an encapsulation layer covering the second electrode layer. One of the first electrode strips 31 and the second electrode strips 33 is a touch driving electrode, and the other is a touch detecting electrode, namely, a plurality of first electrode strips 31 are used for receiving touch driving signals, and a plurality of second electrode strips 33 are used for detecting touch positions and outputting touch detecting signals; alternatively, the plurality of first electrode bars 31 detect the touch position and output a touch detection signal, and the plurality of second electrode bars 33 are configured to receive a touch driving signal.
Further, referring to fig. 3, the dual-sided touch transparent display panel further includes a plurality of first signal lines 34 and a plurality of second signal lines 35, the first signal lines 34 are connected between the first electrode bars 31 and the control circuit 40, and the second signal lines 35 are connected between the second electrode bars 33 and the control circuit 40. The first electrode layer, the second electrode layer, the first signal line 34, and the second signal line 35 are formed of, for example, a metal such as silver or copper, or a transparent conductive material such as ITO or IZO.
The first transparent substrate 221 and/or the second transparent substrate 222 is preferably a flexible film having a thickness of, for example, 0.03mm to 1mm. In other embodiments, the first transparent substrate 221 and/or the second transparent substrate 222 may also be a hard substrate, such as a glass substrate or a plastic substrate.
In this embodiment, the case where the touch position is located on the first touch surface 20a includes, but is not limited to: the contact/distance of the human hand (or stylus) with the first transparent substrate 221 is less than a predetermined value, the contact/distance of the human hand (or stylus) with the touch electrode 30 is less than a predetermined value, and the contact/distance of the human hand (or stylus) with a protective film or optical film covering the touch electrode 30 is less than a predetermined value; the case where the touch position is located on the second touch surface 20b includes, but is not limited to: the contact/distance of the human hand (or stylus) with the second transparent substrate 222 is less than a predetermined value, and the contact/distance of the human hand (or stylus) with a protective film or an optical film covering the second transparent substrate 222 is less than a predetermined value.
Referring to fig. 3 and 4, fig. 4 shows an application scenario of the dual-sided touch transparent display panel of the present embodiment, the touch electrode 30 includes a plurality of signal points 36, the first electrode strips 31 and the second electrode strips 33 intersect at the positions of the signal points 36 and form a capacitor, and the control circuit 40 collects the signal variation of each signal point 36 according to the touch detection signal output by the touch electrode 30, and determines whether the touch position is located on the first touch surface 20a or the second touch surface 20b according to the signal variation. The signal variation is a variation of the capacitance value of the signal point 36 relative to the previous time, specifically, the control circuit 40 transmits a touch driving signal to the touch electrode 30 in a form of row scanning or column scanning, and calculates the signal variation according to the capacitance value variation detected by two adjacent scans. The control circuit 40 cooperates with the touch electrode 30 only on one side of the display panel to realize the double-sided touch function, and the touch electrodes on two sides do not need to be manufactured respectively, so that the process is simplified, the overall yield is improved, only one touch chip is needed to bear the control circuit 40, and the cost is saved.
Referring to fig. 5 (a), when the hand 51 (or the stylus) touches the first touch surface 20a, an equivalent capacitance is formed between the human body and the touch electrode 30, so that the capacitance value of one or more signal points 36 at the touch position changes, and the signal parameters of the first electrode strip 31 and the second electrode strip 33 at the positions of the signal points 36 change, and the control circuit 40 receives the touch detection signal and acquires the signal variation of each signal point 36. The control circuit 40 is preset with a first threshold value Z1, when at least one signal variation is greater than the first threshold value Z1, the control circuit 40 judges that the touch position is located on the first touch surface 20a, and calculates a first touch coordinate A1 according to the signal variation greater than the first threshold value Z1 and the corresponding signal point 36; when any of the signal variation amounts is not greater than the first threshold Z1, the control circuit 40 determines that the touch position is not located on the first touch surface 20 a. In this embodiment, compared with the second touch surface 20b, the distance between the hand 51 touching the first touch surface 20a and the touch electrode 30 is smaller, the signal variation is larger, the maximum value of the signal variation is 811, the first threshold Z1 is preset to 300, and the first touch coordinate A1 is calculated according to the plurality of signal points 36 with the signal variation larger than 300, for example, the calculation method is as follows: the center positions of the signal points 36 are defined as the first touch coordinates A1, or the signal point 36 having the largest signal variation is defined as the first touch coordinates A1, but is not limited thereto.
Referring to fig. 5 (b), when the hand 52 (or the stylus) touches the second touch surface 20b, an equivalent capacitance is formed between the human body and the touch electrode 30, so that the capacitance value of one or more signal points 36 at the touch position changes, and the signal parameters of the charging or discharging of the first electrode strip 31 and the second electrode strip 33 at the position of the signal points 36 change, and the control circuit 40 receives the touch detection signal and acquires the signal variation of each signal point 36. The control circuit 40 is preset with a second threshold Z2, and the control circuit 40 first determines that the touch position is not located on the first touch surface 20a according to that any signal variation is not greater than the first threshold Z1, and then compares the signal variation with the second threshold Z2. When at least one signal variation is greater than the second threshold Z2, the control circuit 40 determines that the touch position is located on the second touch surface 20b, and calculates a second touch coordinate A2 according to the signal variation greater than the second threshold Z2 and the corresponding signal point 36; when any of the signal variation amounts is not greater than the second threshold Z2, the control circuit 40 determines that the touch is not performed, and does not perform an operation related to the touch. In this embodiment, the distance between the hand 52 touching the second touch surface 20b and the touch electrode 30 is larger than that of the first touch surface 20a, and the signal variation is smaller, but because the thicknesses of the touch electrode 30, the first transparent substrate 221, the second transparent substrate 222 and the light-emitting layer 21 are thinner in this embodiment, the distance between the upper surface of the touch electrode 30 and the second touch surface 20b is only 0.1 mm-2.5 mm, for example, and the touch position can still be accurately positioned according to the magnitude of the signal variation. The maximum value of the signal variation is 243, the first threshold Z1 is preset to 75, and the second touch coordinate A2 is determined according to the plurality of signal points 36 with the signal variation greater than 75, for example, by the following calculation methods: the center positions of the signal points 36 are defined as the second touch coordinates A2, or the signal point 36 having the largest signal variation is defined as the second touch coordinates A2, but is not limited thereto.
The first threshold value Z1 and the second threshold value Z2 are determined by the specific structure of the touch electrode 30, the overall thickness of the dual-sided touch transparent display panel, and other factors, and are pre-stored in the control circuit 40 of the dual-sided touch transparent display panel after being calculated or determined through experiments. If the ratio of the second threshold Z2 to the first threshold Z1 is too small, the touch sensitivity of the first touch surface 20a may be low; if the ratio of the second threshold Z2 to the first threshold Z1 is too large, erroneous judgment may be caused. After the experiment, the second threshold Z2 is preferably 0.25 to 0.5 times the first threshold Z1.
Referring to fig. 6, a frame structure diagram of a control circuit 40 in the present embodiment is shown, where the control circuit 40 includes an acquisition module 41, a first judgment module 42, a second judgment module 43, a touch coordinate calculation module 44, and a function control module 45.
The acquisition module 41 is connected to the touch electrode 30, and is configured to receive a touch detection signal, and acquire a signal variation of each signal point 36 according to the touch detection signal.
The first judging module 42 is connected to the collecting module 41, and is configured to judge whether at least one signal variation is greater than a first threshold Z1; if the touch control signal exists, the double-sided touch control transparent display panel is controlled to be switched to a first touch control mode; if not, the signal variation is transmitted to the second judgment module 43.
The second judging module 43 is connected to the first judging module 42, and is configured to judge whether at least one signal variation is greater than the second threshold Z2 when none of the signal variations is greater than the first threshold Z1; if the touch control signal exists, the double-sided touch control transparent display panel is controlled to be switched to a second touch control mode; if the touch control is not performed, judging that the touch control is not performed.
The touch coordinate calculating module 44 is connected to the first judging module 42 and the second judging module 43, and is configured to calculate, in the first touch mode, a first touch coordinate A1 according to the signal variation greater than the first threshold Z1 and the corresponding signal point 36; the touch coordinate calculating module 44 is further configured to calculate, in the second touch mode, a second touch coordinate A2 according to the signal variation greater than the second threshold Z2 and the corresponding signal point 36.
The function control module 45 is configured to perform an operation related to the first touch surface 20a according to the first touch coordinate A1 in the first touch mode; the function control module 45 is further configured to perform an operation related to the second touch surface 20b according to the second touch coordinate A2 in the second touch mode.
Further, the control circuit 40 further includes a touch driving signal output module for outputting a touch driving signal to the touch driving electrode. The control circuit 40 is a touch chip disposed on a Printed Circuit Board (PCB) or a flexible printed circuit board (FPC), which is electrically connected to the touch electrode 30 by bonding.
Referring to fig. 7, the present invention further provides a driving method of a double-sided touch transparent display panel, which includes the following steps:
collecting the signal variation of each signal point 36 according to the touch detection signal;
judging whether at least one signal variation is larger than a first threshold Z1;
if so, calculating a first touch coordinate A1 according to the signal variation larger than the first threshold Z1 and the corresponding signal point 36, and executing the operation related to the first touch surface 20a according to the first touch coordinate A1;
if not, judging whether at least one signal variation is larger than a second threshold Z2; if so, calculating a second touch coordinate A2 according to the signal variation larger than the second threshold Z2 and the corresponding signal point 36, and executing the operation related to the second touch surface 20b according to the second touch coordinate A2; if the touch control is not performed, judging that the touch control is not performed.
The step of performing the operation related to the first touch surface 20a according to the first touch coordinate A1 includes, but is not limited to, changing the screen displayed on the first touch surface 20a and/or the second touch surface 10b according to the corresponding image/text of the first touch coordinate A1 on the first touch surface 20 a. The step of performing the operation related to the second touch surface 20b according to the second touch coordinates A2 includes, but is not limited to, changing the screen displayed on the first touch surface 20a and/or the second touch surface 10b according to the corresponding image/text on the second touch surface 20b according to the second touch coordinates A2. Therefore, the double-sided touch transparent display panel can conveniently realize the double-sided interaction function by only relying on one touch chip.
The invention also provides a display device which can realize double-sided transparent display and double-sided touch control functions and comprises any double-sided touch control transparent display panel.
In summary, the present invention provides a double-sided touch transparent display panel, a driving method thereof, and a display device, wherein the control circuit 40 is used for determining whether a touch position is located on the first touch surface 20a or the second touch surface 20b, so that the double-sided touch function is realized by only using the touch electrode 30 on one side of the display panel, and the double-sided touch electrodes are not required to be manufactured respectively, thereby simplifying the process, improving the overall yield, and saving the cost by only using one touch chip.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, the scope of the description of the present invention should be considered as long as the combinations of the technical features are not contradictory.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. The double-sided touch transparent display panel is characterized by comprising a light-emitting layer (21) of a double-sided display picture, a first transparent substrate (221), a second transparent substrate (222), a touch electrode (30) and a control circuit (40);
the first transparent substrate (221) and the second transparent substrate (222) are respectively arranged at two sides of the light-emitting layer (21), one side of the first transparent substrate (221) away from the light-emitting layer (21) is a first touch surface (20 a), and one side of the second transparent substrate (222) away from the light-emitting layer (21) is a second touch surface (20 b);
the touch electrode (30) is located on the first touch surface (20 a), the touch electrode (30) comprises a plurality of signal points (36), and the touch electrode (30) is used for detecting a touch position and outputting a touch detection signal;
the control circuit (40) is connected with the touch electrode (30), acquires the signal variation of each signal point (36) according to the touch detection signal, and judges whether the touch position is positioned on the first touch surface (20 a) or the second touch surface (20 b) according to the signal variation;
the control circuit (40) judges that the touch position is positioned on the first touch surface (20 a) when at least one signal variation is larger than a first threshold value (Z1); the control circuit (40) judges that the touch position is located on the second touch surface (20 b) when any signal variation is not greater than the first threshold (Z1) and at least one signal variation is greater than a second threshold (Z2); and when any signal variation is not larger than the second threshold value (Z2), the control circuit (40) judges that no touch control is performed.
2. The double-sided touch transparent display panel of claim 1, wherein the second threshold value (Z2) is 0.25-0.5 times the first threshold value (Z1).
3. The double-sided touch transparent display panel according to claim 1, wherein the control circuit (40) comprises an acquisition module (41), a first judgment module (42), a second judgment module (43), a touch coordinate calculation module (44), and a function control module (45);
the acquisition module (41) is used for receiving the touch detection signal and acquiring the signal variation of each signal point (36) according to the touch detection signal;
the first judging module (42) is used for judging whether at least one signal variation is larger than a first threshold value (Z1); if yes, controlling the double-sided touch transparent display panel to switch to a first touch mode; if not, transmitting the signal variation to a second judging module (43);
the second judging module (43) is configured to judge whether at least one signal variation is greater than a second threshold (Z2) when any signal variation is not greater than the first threshold (Z1); if yes, controlling the double-sided touch transparent display panel to switch to a second touch mode; if the touch control is not performed, judging that the touch control is not performed;
the touch coordinate calculating module (44) is configured to calculate, in the first touch mode, a first touch coordinate (A1) according to the signal variation greater than the first threshold (Z1) and the corresponding signal point (36); the touch coordinate calculating module (44) is further configured to calculate, in the second touch mode, a second touch coordinate (A2) according to the signal variation greater than the second threshold (Z2) and the corresponding signal point (36);
the function control module (45) is configured to perform an operation related to the first touch surface (20 a) according to the first touch coordinates (A1) in the first touch mode; the function control module (45) is further configured to perform an operation related to the second touch surface (20 b) according to the second touch coordinates (A2) in the second touch mode.
4. The double-sided touch transparent display panel of claim 1, wherein the light emitting layer (21) comprises at least one of an organic light emitting diode, a quantum dot light emitting diode, and a micro light emitting diode.
5. The double-sided touch transparent display panel according to claim 4, wherein the light emitting layer (21) comprises a plurality of pixel units, each pixel unit having an anode (211) and a cathode (213) disposed therein, the anode (211) and the cathode (213) being formed of a transparent conductive material.
6. The double-sided touch transparent display panel according to claim 1, wherein the touch electrode (30) comprises a plurality of first electrode strips (31), an insulating layer (32) and a plurality of second electrode strips (33); the plurality of first electrode strips (31) are insulated from each other at intervals and are positioned on the first touch surface (20 a), the insulating layer (32) covers the plurality of first electrode strips (31), and the plurality of second electrode strips (33) are insulated from each other at intervals and are positioned on the insulating layer (32); the first electrode strip (31) and the second electrode strip (33) are insulated and crossed.
7. The double-sided touch transparent display panel according to claim 6, wherein the plurality of first electrode bars (31) are configured to receive touch driving signals, and the plurality of second electrode bars (33) are configured to detect the touch position and output the touch detection signals;
alternatively, the plurality of first electrode bars (31) are used for detecting the touch position and outputting the touch detection signal, and the plurality of second electrode bars (33) are used for receiving the touch driving signal.
8. A driving method of a double-sided touch transparent display panel, which is applicable to the double-sided touch transparent display panel according to any one of claims 1 to 7, comprising:
collecting the signal variation of each signal point (36) according to the touch detection signal;
determining whether at least one of said signal variations is greater than a first threshold value (Z1);
if so, calculating a first touch coordinate (A1) according to the signal variation larger than the first threshold value (Z1) and the corresponding signal point (36), and executing an operation related to the first touch surface (20 a) according to the first touch coordinate (A1);
if not, judging whether at least one signal variation is larger than a second threshold value (Z2); if so, calculating a second touch coordinate (A2) according to the signal variation larger than the second threshold (Z2) and the corresponding signal point (36), and executing an operation related to the second touch surface (20 b) according to the second touch coordinate (A2); if the touch control is not performed, judging that the touch control is not performed.
9. A display device comprising the double-sided touch transparent display panel according to any one of claims 1 to 7.
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| CN113760114B (en) * | 2020-06-03 | 2024-03-01 | 京东方科技集团股份有限公司 | Touch panel, driving method thereof and display device |
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| TWI536239B (en) * | 2014-10-27 | 2016-06-01 | 緯創資通股份有限公司 | Touch apparatus and touch method |
| CN104538419B (en) * | 2014-12-12 | 2018-02-13 | 昆山国显光电有限公司 | A kind of touch OLED double-side display devices |
| CN106158913B (en) * | 2016-07-19 | 2019-12-10 | 江西联思触控技术有限公司 | double-sided touch OLED display panel |
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