CN110244883B - Touch method of organic light emitting diode touch display panel - Google Patents
Touch method of organic light emitting diode touch display panel Download PDFInfo
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- CN110244883B CN110244883B CN201910284343.8A CN201910284343A CN110244883B CN 110244883 B CN110244883 B CN 110244883B CN 201910284343 A CN201910284343 A CN 201910284343A CN 110244883 B CN110244883 B CN 110244883B
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Abstract
The invention discloses a touch method of an organic light emitting diode touch display panel, which comprises the following steps: providing a common voltage to a plurality of first electrode patterns and a plurality of first isolation electrode patterns of a touch sensing component of the organic light emitting diode touch display panel at a first time sequence; and sequentially providing a touch transmission signal to the first electrode patterns at a second time sequence, sequentially detecting the coupling capacitance of the plurality of second electrode patterns of the touch sensing assembly, and enabling the first isolation electrode patterns to be in a floating potential. The organic light emitting diode touch display panel of the above embodiment has a distinct display state and a distinct touch state, and the two states do not interfere with each other.
Description
The present application is a divisional application of patent applications with an application date of 2015, 02/05, and an application number of 201510060497.0, entitled "organic light emitting diode touch display panel and touch method using the same".
Technical Field
The invention relates to an organic light emitting diode touch display panel.
Background
In recent years, with the development of technology, display panels have been widely used. Among them, although liquid crystal display panels are the mainstream, the development of organic light emitting diode display panels has been gradually pursued because the display characteristics thereof still have a problem that is difficult to break through.
The organic light emitting diode is an active light emitting element, and the display panel does not need a backlight source, and can emit light when current flows through the light emitting layer, so that the problem of light leakage of the liquid crystal display panel due to residual electric fields is avoided. The OLED display panel also has the advantages of being light, thin, short, sensitive, large in visual angle, flexible … and the like. In addition, the organic light emitting diode display panel can also be combined with a touch panel to form the touch display panel. However, how to design the combination structure to make the integrated device after combination not too thick and heavy is one of the problems to be solved by the industry at present.
Disclosure of Invention
One aspect of the present invention provides an organic light emitting diode touch display panel, which includes a first substrate, a second substrate, a touch sensing device, and an organic light emitting diode display device. The touch sensing assembly is arranged between the first substrate and the second substrate. The organic light emitting diode display assembly is arranged on the second substrate. The organic light emitting diode display assembly comprises an anode layer, a light emitting layer and a common electrode layer. The anode layer is disposed between the first substrate and the second substrate. The light emitting layer is arranged between the first substrate and the anode layer. The light-emitting layer is arranged between the common electrode layer and the anode layer, and the common electrode layer forms at least part of the touch sensing assembly.
In one or more embodiments, the touch sensing device includes a plurality of first electrode patterns, a plurality of second electrode patterns, a plurality of isolation electrode patterns, a plurality of lower connection elements, a plurality of insulators, and a plurality of upper connection elements. The second electrode patterns and the first electrode patterns are alternately arranged to form a matrix. The isolation electrode pattern is disposed between the first electrode pattern and the second electrode pattern. The isolation electrode pattern, the first electrode pattern and the second electrode pattern are insulated from each other. The lower connection members respectively connect adjacent second electrode patterns arranged in the first direction. The first electrode pattern, the second electrode pattern, the isolation electrode pattern and the lower connection element form a common electrode layer. The insulators are respectively disposed at least on the lower connection members. The upper connecting elements are respectively arranged on the insulating parts and are bridged over two adjacent first electrode patterns arranged along a second direction, and the first direction is substantially orthogonal to the second direction.
In one or more embodiments, the touch sensing device further includes a touch signal source, a signal detector, and a common voltage source. The touch signal source is connected with the first electrode pattern. The signal detector is connected with the second electrode pattern. A common voltage source is connected to the isolated electrode patterns.
In one or more embodiments, the touch sensing device includes a plurality of first electrode patterns, a plurality of second electrode patterns, and a plurality of isolation electrode patterns. The first electrode pattern and the second electrode pattern are respectively wedge-shaped. The second electrode patterns are alternately arranged with the first electrode patterns. The isolation electrode pattern is disposed between the first electrode pattern and the second electrode pattern. The first electrode pattern, the second electrode pattern and the isolation electrode pattern are insulated from each other, and the first electrode pattern, the second electrode pattern and the isolation electrode pattern form a common electrode layer.
In one or more embodiments, the touch sensing device further includes a touch signal circuit and a common voltage source. The touch signal circuit is connected with the first electrode pattern and the second electrode pattern. A common voltage source is connected to the isolated electrode patterns.
In one or more embodiments, the touch sensing device includes a plurality of first electrode patterns, a plurality of first isolation electrode patterns, a plurality of second electrode patterns, and a plurality of second isolation electrode patterns. The first isolation electrode patterns and the first electrode patterns are alternately arranged along a first direction. The first electrode pattern and the first isolation electrode pattern form a common electrode layer. The second isolation electrode patterns and the second electrode patterns are alternately arranged along a second direction, and the first direction is substantially orthogonal to the second direction. The second electrode pattern and the second isolation electrode pattern form an anode layer of the organic light emitting diode display assembly.
In one or more embodiments, the distance between the common electrode layer and the anode layer is about 1 micron.
In one or more embodiments, the touch sensing device further includes a touch signal source, a signal detector, a common voltage source, and a common voltage source. The touch signal source is connected with the second electrode pattern. The signal detector is connected with the first electrode pattern. A common voltage source is connected to the first isolated electrode pattern. The display signal source is connected with the second isolated electrode pattern.
In one or more embodiments, the touch sensing device includes a plurality of first electrode patterns, a plurality of first isolation electrode patterns, a plurality of second electrode patterns, and a plurality of second isolation electrode patterns. The first isolation electrode patterns and the first electrode patterns are alternately arranged along a first direction. The first electrode pattern and the first isolation electrode pattern form a common electrode layer. The second isolation electrode patterns and the second electrode patterns are alternately arranged along the second direction. The first direction is substantially orthogonal to the second direction. The second electrode pattern and the second isolation electrode pattern form a touch sensing layer. The touch sensing layer is in contact with the first substrate and is separated from the common electrode layer by a gap.
In one or more embodiments, the touch sensing device further includes a touch signal source, a signal detector, and a common voltage source. The touch signal source is connected with the first electrode pattern. The signal detector is connected with the second electrode pattern. A common voltage source is connected to the first isolated electrode pattern.
In one or more embodiments, the isolation electrode pattern is made of a conductive material.
In one or more embodiments, the first isolation electrode pattern and the second isolation electrode pattern are made of a conductive material.
Another aspect of the present invention provides a touch method for an organic light emitting diode touch display panel, which includes providing a common voltage to a plurality of first electrode patterns and a plurality of first isolation electrode patterns of a touch sensing device of the organic light emitting diode touch display panel at a first timing. And when the first time sequence is carried out, the touch transmission signals are sequentially provided to the first electrode patterns, the coupling capacitances of the plurality of second electrode patterns of the touch sensing assembly are sequentially detected, and the first isolation electrode patterns are all at a floating potential.
In one or more embodiments, the common voltage is further provided to the second electrode pattern in the first timing.
In one or more embodiments, at the first sub-timing of the second timing, a touch transmission signal is provided to one of the first electrode patterns, and the coupling capacitance of the second electrode pattern is sequentially detected. And providing a touch transmission signal to the other of the first electrode patterns at a second sub-time of the second time sequence, and sequentially detecting the coupling capacitance of the second electrode pattern.
In one or more embodiments, at a sub-timing of the second timing, a touch transmission signal is provided to one of the first electrode patterns, and the coupling capacitance of the second electrode pattern adjacent to the first electrode pattern is sequentially detected.
In one or more embodiments, the display signal is provided to an anode layer of an oled display device of the oled touch display panel at a first timing.
In one or more embodiments, the touch sensing device further includes a plurality of second isolated electrode patterns. In the first timing, the second electrode pattern and the second isolation electrode pattern are both at a floating potential, and in the second timing, the second isolation electrode pattern is both at a floating potential.
In another aspect, the present invention provides a touch method of an organic light emitting diode touch display panel, which includes providing a common voltage to a plurality of first electrode patterns and a plurality of first isolation electrode patterns of a touch sensing device of the organic light emitting diode touch display panel and providing a display signal to a plurality of second electrode patterns and a plurality of second isolation electrode patterns of the touch sensing device at a first timing. And when the second time sequence is carried out, touch transmission signals are sequentially provided to the second electrode patterns, the coupling capacitance of the first electrode patterns is sequentially detected, and the first isolation electrode patterns and the second isolation electrode patterns are both in floating potential.
In one or more embodiments, the voltage value of the display signal is greater than the voltage value of the touch transmission signal.
In the organic light emitting diode touch display panel of the above embodiment, the common electrode layer of the organic light emitting diode display device is used as at least a part of the touch sensing device, so that the common electrode layer has both display and touch functions, and the organic light emitting diode touch display panel is advantageous for thinning. In addition, the organic light emitting diode touch display panel of the above embodiment has a distinct display state and a distinct touch state, and the two states do not interfere with each other.
Drawings
Fig. 1 is a schematic cross-sectional view of an oled touch display panel according to an embodiment of the invention;
FIG. 2 is a schematic top view of one embodiment of the touch sensing device of FIG. 1;
FIG. 3A is a schematic cross-sectional view taken along line 3A-3A of FIG. 2;
FIG. 3B is a schematic cross-sectional view of a touch sensing device according to another embodiment of the invention;
FIG. 4 is a signal diagram of the transmission electrode, the reception electrode, the isolation electrode pattern of FIG. 2 and the anode layer of FIG. 1 between times t0 and tn + 1;
FIG. 5 is a schematic top view of another embodiment of the touch sensing device of FIG. 1;
FIG. 6 is a signal diagram between the first electrode pattern, the second electrode pattern, the isolation electrode pattern of FIG. 5 and the anode layer time t0 to tn +1 of FIG. 1;
FIG. 7 is a schematic cross-sectional view illustrating an OLED touch panel according to still another embodiment of the present invention;
FIG. 8A is a schematic top view of the signal detector, the common voltage source and the common electrode layer of FIG. 7;
FIG. 8B is a schematic top view of a touch signal source, a display signal source and the anode layer of FIG. 7;
FIG. 9 is a signal diagram of the first electrode pattern, the first isolated electrode pattern, the second electrode pattern and the second isolated electrode pattern of FIG. 8A during a time period t0 to tn + 1;
fig. 10 is a schematic cross-sectional view illustrating an oled touch display panel according to yet another embodiment of the present invention;
fig. 11A is a schematic top view of a signal detector and the touch sensing layer of fig. 10;
FIG. 11B is a schematic top view of a touch signal source, a common voltage source and the common electrode layer of FIG. 10;
fig. 12 is a signal diagram of the first electrode pattern, the first isolation electrode pattern of fig. 11B, the second electrode pattern, the second isolation electrode pattern of fig. 11A, and the anode layer of fig. 10 between time t0 and tn + 1.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner.
Fig. 1 is a schematic cross-sectional view of an organic light emitting diode touch display panel according to an embodiment of the invention, and fig. 2 is a schematic top view of a touch sensing device 300 in fig. 1 according to an embodiment of the invention. The oled touch display panel includes a first substrate 100, a second substrate 200, a touch sensing device 300, and an oled display device 400. The touch sensing device 300 is disposed between the first substrate 100 and the second substrate 200. The organic light emitting diode display assembly 400 is disposed on the second substrate 200. The oled display assembly 400 includes an anode layer 410, a light emitting layer 420, and a common electrode layer 430. The anode layer 410 is interposed between the first substrate 100 and the second substrate 200. The light emitting layer 420 is disposed between the first substrate 100 and the anode layer 410, and between the common electrode layer 430 and the anode layer 410. The common electrode layer 430 constitutes at least a portion of the touch sensing device 300.
The organic light emitting diode touch display panel of the present embodiment utilizes the common electrode layer 430 of the organic light emitting diode display device 400 as at least a portion of the touch sensing device 300, so that the common electrode layer 430 has both display and touch functions. Compared with the traditional organic light-emitting diode touch display panel, the touch display panel has the advantages that at least one touch electrode layer can be reduced, and the organic light-emitting diode touch display panel is favorably thinned. On the other hand, since the touch sensing device 300 is disposed between the first substrate 100 and the second substrate 200, the touch sensing device 300 does not need to be disposed on the first substrate 100 (e.g., a glass substrate) in an external hanging manner. In the present embodiment, the first substrate 100 can protect the touch sensing device 300 without adding another protective substrate, i.e., the entire device only needs two substrates (i.e., the first substrate 100 and the second substrate 200), which is also helpful for the thinning of the oled touch display panel.
Referring to fig. 2 and fig. 3A together, fig. 3A is a schematic cross-sectional view along line 3A-3A of fig. 2. In the present embodiment, the touch sensing device 300 includes a plurality of first electrode patterns 302, a plurality of second electrode patterns 304, a plurality of isolation electrode patterns 306, a plurality of lower connecting elements 308, a plurality of insulators 312, and a plurality of upper connecting elements 314. The second electrode patterns 304 are alternately arranged with the first electrode patterns 302 to form a matrix. The isolation electrode pattern 306 is disposed between the first electrode pattern 302 and the second electrode pattern 304. The materials of the isolation electrode pattern 306, the first electrode pattern 302 and the second electrode pattern 304 are all conductors and are insulated from each other. In detail, the isolation electrode pattern 306, the first electrode pattern 302, and the second electrode pattern 304 are made of the same material, are located in the same layer, and can be completed in the same process. For example, a patterned conductive layer may be deposited on the light emitting layer 420 (as shown in fig. 1) to form the isolation electrode pattern 306, the first electrode pattern 302, and the second electrode pattern 304 on the light emitting layer 420, but the invention is not limited thereto. The lower connection members 308 respectively connect adjacent two second electrode patterns 304 arranged in the first direction D1. The first electrode pattern 302, the second electrode pattern 304, the isolation electrode pattern 306 and the lower connection element 308 form a common electrode layer 430. The insulating member 312 is disposed at least on the lower connection member 308, for example, in fig. 3A, the insulating member 312 is disposed on the lower connection member 308, the isolation electrode pattern 306, and the first electrode pattern 302. The upper connection members 314 are respectively disposed on the insulating members 312 and cross over adjacent two first electrode patterns 302 arranged along the second direction D2. The first direction D1 is substantially orthogonal to the second direction D2.
The touch sensing device 300 of the present embodiment may be a Single-sided transparent conductive film (also referred to as Single Indium Tin Oxide Structure, SITO) Structure. Specifically, the first electrode patterns 302 constitute a plurality of electrodes extending along the second direction D2 through the connection of the upper connection elements 314, and the second electrode patterns 304 constitute a plurality of electrodes extending along the first direction D1 through the connection of the lower connection elements 308. In this embodiment, the electrodes extending along the second direction D2 can be used as the transmission electrodes T1, T2, and T3 (i.e., composed of the first electrode patterns 302) for touch control, and the electrodes extending along the first direction D1 can be used as the reception electrodes R1, R2, R3, and R4 (i.e., composed of the second electrode patterns 304) for touch control. However, in other embodiments, the reverse is also possible. In fig. 2, only three transmitting electrodes (i.e., transmitting electrodes T1, T2, T3) and four receiving electrodes (i.e., receiving electrodes R1, R2, R3, R4) are shown for clarity. However, the number of the above-mentioned components is merely illustrative and not restrictive. The numbers of the transmitting electrodes T1, T2, T3 and the receiving electrodes R1, R2, R3, R4 can be flexibly selected by those skilled in the art according to the actual requirements.
In addition, as described above, the first electrode pattern 302, the second electrode pattern 304, the isolation electrode pattern 306, and the lower connecting element 308 are all made of a conductive material, such as a metal Oxide (e.g., indium Tin Oxide (ITO)). The upper connecting element 314 is also made of a conductive material, such as metal.
The first electrode patterns 302 and the second electrode patterns 304 may be diamond-shaped (or hexagonal), and the isolation electrode patterns 306 are disposed around the first electrode patterns 302 and the second electrode patterns 304. Each of the first electrode patterns 302, the second electrode patterns 304 and the isolation electrode patterns 306 overlaps a plurality of pixel units (not shown) of the second substrate 200 (which may be a thin film transistor array substrate), that is, the sizes of the first electrode patterns 302, the second electrode patterns 304 and the isolation electrode patterns 306 are all larger than the size of the pixel units.
Insulating layers 316 are disposed between the isolation electrode pattern 306 and the first electrode pattern 302, between the isolation electrode pattern 306 and the second electrode pattern 304, and between the isolation electrode pattern 306 and the lower connecting element 308, so that the isolation electrode pattern 306 and the first electrode pattern 302, the second electrode pattern 304, and the lower connecting element 308 can be insulated from each other. Wherein the insulating layer 316 is only shown in fig. 3A and not shown in fig. 2 for clarity of the drawing. In addition, the orthographic projection of the insulating layer 316 on the second substrate 200 overlaps the Black Matrix (BM, not shown) between the pixel units, so the existence of the insulating layer 316 does not affect the aperture ratio of the oled display device 400. If the pixel units are arranged in a matrix, the edges of the first electrode patterns 302 and the second electrode patterns 304 (i.e., the positions of the insulating layers 316) are saw-toothed when viewed in an enlarged manner.
Additionally, the dimensions of the upper connecting element 314 of FIG. 2 are shown in exaggerated form for clarity. In fact, the orthographic projection of the upper connecting element 314 on the second substrate 200 is also overlapped on the black matrix between the pixel units, so even if the material of the upper connecting element 314 is metal, the aperture ratio of the oled display assembly 400 is not affected.
The structure of the insulating member 312 is not limited to the above. Fig. 3B is a schematic cross-sectional view of a touch sensing device 300 according to another embodiment of the invention. In this embodiment, the insulating member 312 may be a whole layer structure, which covers the common electrode layer 430 (as shown in fig. 1) completely. The insulating member 312 has a plurality of through holes 313 therein to expose a portion of the first electrode pattern 302. The upper connection element 314 is connected to the first electrode patterns 302 through the through hole 313 to electrically connect two adjacent first electrode patterns 302. Other details of this embodiment are the same as those of fig. 3A, and therefore are not described again.
Please return to fig. 2. In the present embodiment, the touch sensing device 300 further includes a touch signal source 392, a signal detector 394 and a common voltage source 396. The touch signal source 392 is connected to the first electrode pattern 302, for example, the first electrode pattern 302 via the upper connecting element 314. The signal detector 394 is connected to the second electrode pattern 304. A common voltage source 396 is connected to the isolated electrode pattern 306. The touch signal source 392 is used to provide a first electrode pattern 302 common voltage or a touch transmission signal, the signal detector 394 is used to provide a second electrode pattern 304 common voltage or detect a coupling capacitance between the second electrode pattern 304 and the first electrode pattern 302, and the common voltage source 396 is used to provide an isolation electrode pattern 306 common voltage or make it at a Floating (Floating) potential. In one or more embodiments, the touch signal source 392, the signal detector 394 and the common voltage source 396 may be different circuit elements respectively, or may be combined into a single circuit element, which is not limited in the disclosure.
Referring to fig. 1, fig. 2 and fig. 4 together, fig. 4 is a signal diagram of the transmission electrodes T1 to T3, the receiving electrodes R1 to R4, the isolation electrode pattern 306 and the anode layer 410 of fig. 1 between time T0 and time tn + 1. For clarity, only a portion of the display signal DS received by the anode layer 410 corresponding to a single pixel unit is shown. In operation, at the first timing (between time T0 and time T1), the oled touch display panel is in the display state, so the touch signal source 392 provides the common voltage Vcom to the first electrode pattern 302 (i.e., the transmission electrodes T1 to T3), the signal detector 394 provides the common voltage Vcom to the second electrode pattern 304 (i.e., the reception electrodes R1 to R4), and the common voltage source 396 provides the common voltage Vcom to the isolation electrode pattern 306. Meanwhile, the second substrate 200 (in the present embodiment, a thin film transistor array substrate) supplies the display signal DS to the anode layer 410. More specifically, the anode layer 410 is divided into a plurality of pixel electrodes (not shown) respectively corresponding to the pixel units of the second substrate 200. Different pixel units can provide different display signals DS to the pixel electrodes of the anode layer 410, and the gray scale of each pixel unit is determined by the voltage of the display signal DS. The display signal DS of the anode layer 410 and the common voltage Vcom of the common electrode layer 430 share the current in the light emitting layer 420, so as to convert the electric energy thereof into the light energy of visible light to emit light. Therefore, in the first time sequence, the organic light emitting diode touch display panel can generate a display frame.
Then, at a second timing (between time t1 and tn), the oled touch display panel is in a touch state, so that the touch transmission signal TS is sequentially provided to the first electrode pattern 302, the coupling capacitance of the second electrode pattern 304 is sequentially detected, and the isolation electrode pattern 306 is at a floating potential. In detail, at the first sub-timing (between time T1 and time T2), the touch signal source 392 provides the touch transmission signal TS to the transmission electrode T1 (i.e. a portion of the first electrode pattern 302), and the signal detector 394 sequentially detects the coupling capacitances between the receiving electrodes R1 to R4 (i.e. the second electrode pattern 304) and the transmission electrode T1, while the common voltage source 396 is not powered to the isolation electrode pattern 306 at this time, so that the isolation electrode pattern 306 is at the floating potential. Therefore, with the isolation electrode pattern 306, coupling capacitances are generated between the transmission electrode T1 and the receiving electrodes R1 to R4, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances of the receiving electrodes R1 to R4.
Then, at the second sub-timing (between time T2 and time T3), the touch signal source 392 provides the touch transmission signal TS to the transmission electrode T2 (i.e. another portion of the first electrode pattern 302), and the signal detector 394 sequentially detects the coupling capacitances between the receiving electrodes R1-R4 and the transmission electrode T2, and the isolation electrode pattern 306 is at the floating potential. Therefore, coupling capacitances are generated between the transmission electrode T2 and the receiving electrodes R1 to R4, respectively, at intervals of the isolation electrode pattern 306, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances of the receiving electrodes R1 to R4. Thus, as long as the touch signal source 392 provides the touch transmission signal TS to the transmission electrodes T1 to T3 in time sequence, and the signal detector 394 detects the coupling capacitance between the receiving electrodes R1 to R4 and the transmission electrodes T1 to T3 in time sequence, the position of the touch excitation can be determined.
After a cycle of the first timing sequence and the second timing sequence (i.e., time t0 to tn) is completed, the oled touch panel is in the display state again (between time tn to tn + 1), and thus the oled touch panel generates a next display frame. Therefore, as long as the first time sequence and the second time sequence are repeated, the organic light emitting diode touch display panel can have both display and touch functions.
In the present embodiment, only the first timing (i.e. time t0 to t1, time tn to tn +1, …) is in the display state, so the display signal DS is a Pulse (Pulse) signal. In addition, since the organic light emitting diode is powered by the anode layer 410 and the common electrode layer 430, a current flows through the light emitting layer 420, so that electric energy is converted into light energy of visible light to emit light. Conversely, when the anode layer 410 is not energized, the light-emitting layer 420 does not emit light, and thus the organic light-emitting diode has a higher reaction speed. Even if the display signal DS is a pulse signal, light can be emitted as long as there is sufficient current in the light-emitting layer 420, and there is almost no problem of delayed reaction. In the touch state, even though the first electrode patterns 302 and the second electrode patterns 304 are intermittently energized, the anode layer 410 is not energized, so that no current is generated in the light emitting layer 420, and thus no light is emitted. In summary, the oled touch display panel of the present embodiment has a distinct display state and a distinct touch state, and the two states do not interfere with each other.
Please return to fig. 1. In this embodiment, the oled touch display panel may further include a sealant 500 disposed between the first substrate 100 and the second substrate 200 and surrounding the touch sensing device 300 and the oled display device 400. The sealing material 500 can block the external air, thereby preventing the light emitting layer 420 of the oled display device 400 from being oxidized due to air contact.
Next, please refer to fig. 5, which is a schematic top view of another embodiment of the touch sensing device 300 of fig. 1. In the present embodiment, the touch sensing device 300 includes a plurality of first electrode patterns 322a to 322n, a plurality of second electrode patterns 325a to 325n, and a plurality of isolation electrode patterns 328. The first electrode patterns 322a through 322n and the second electrode patterns 325a through 325n are respectively wedge-shaped and alternately arranged. The isolation electrode pattern 328 is disposed between the first electrode patterns 322a through 322n and the second electrode patterns 325a through 325n. The first electrode patterns 322a to 322n, the second electrode patterns 325a to 325n, and the isolation electrode patterns 328 are insulated from each other, and the first electrode patterns 322a to 322n, the second electrode patterns 325a to 325n, and the isolation electrode patterns 328 constitute a common electrode layer 430 as shown in fig. 1.
In detail, the first electrode patterns 322a to 322n, the second electrode patterns 325a to 325n, and the isolation electrode patterns 328 are made of the same material and are disposed in the same layer, and can be completed in the same process. For example, a patterned conductive layer may be deposited on the light emitting layer 420 (as shown in fig. 1) to form the first electrode patterns 322 a-322 n, the second electrode patterns 325 a-325 n, and the isolation electrode patterns 328, but the invention is not limited thereto. The material of the first electrode patterns 322 a-322 n, the second electrode patterns 325 a-325 n and the isolation electrode patterns 328 may be metal oxide.
The first electrode patterns 322a to 322n are disposed to face the second electrode patterns 325a to 325n. In other words, each of the first electrode patterns 322 a-322 n and the second electrode patterns 325 a-325 n has a bottom 323 (326) and a top 324 (327). The bottom ends 323 of the first electrode patterns 322 a-322 n are adjacent to the top ends 327 of the second electrode patterns 325 a-325 n, and the top ends 324 of the first electrode patterns 322 a-322 n are adjacent to the bottom ends 326 of the second electrode patterns 325 a-325 n. The isolation electrode pattern 328 is interposed between the first electrode patterns 322a to 322n and the second electrode patterns 325a to 325n, and insulating layers (not shown) are interposed between the isolation electrode pattern 328 and the first electrode patterns 322a to 322n and between the isolation electrode pattern 328 and the second electrode patterns 325a to 325n. The insulating layer is similar to that described in FIG. 2, and thus will not be described again.
In the present embodiment, the touch sensing device 300 further includes a touch signal circuit 398 and a common voltage source 396. The touch signal circuit 398 connects the first electrode patterns 322a 322n and the second electrode patterns 325a 325n. A common voltage source 396 is connected to the isolated electrode pattern 328. The touch signal circuit 398 is used to provide a common voltage or touch transmission signal for the first electrode patterns 322 a-322 n and the second electrode patterns 325 a-325 n, or to detect the coupling capacitance, and the common voltage source 396 is used to provide a common voltage or make it at a floating potential for the isolated electrode pattern 328.
Referring to fig. 1, fig. 5 and fig. 6 together, fig. 6 is a signal diagram of the first electrode patterns 322a to 322n, the second electrode patterns 325a to 325n, the isolation electrode pattern 328 and the anode layer 410 of fig. 1 between time t0 and time tn + 1. For clarity, only a portion of the display signal DS received by the anode layer 410 corresponding to a single pixel unit is shown. In operation, at the first timing (between time t0 and time t 1), the oled touch display panel is in the display state, so the touch signal circuit 398 provides the common voltage Vcom to the first electrode patterns 322 a-322 n and the second electrode patterns 325 a-325 n, and the common voltage source 396 provides the common voltage Vcom to the isolation electrode pattern 328. Meanwhile, the second substrate 200 provides the display signal DS to the anode layer 410. Therefore, in the first time sequence, the organic light emitting diode touch display panel can generate a display frame.
Then, at the second timing (between time t1 and time tn), the oled touch display panel is in a touch state, so that at the first sub-timing (between time t1 and time t 2), the touch signal circuit 398 provides the touch transmission signal TS to the second electrode pattern 325a to detect the discharge speed thereof, and the common voltage source 396 is not powered to the isolation electrode pattern 328 at this time, so as to be at the floating potential. Therefore, the touch signal circuit 398 can determine whether the second electrode pattern 325a is touched and the touch position thereof according to the difference of the discharge speed.
Then, at the second sub-timing (between time t2 and time t 3), the touch signal circuit 398 provides the touch transmission signal TS to the first electrode pattern 322a to detect the discharging speed thereof, and the common voltage source 396 does not conduct electricity to the isolation electrode pattern 328 at this time, so as to make it at the floating potential. According to the different discharge speeds, the touch signal circuit 398 can determine whether the first electrode pattern 322a is touched and the touch position thereof. In this way, as long as the touch signal circuit 398 provides the touch transmission signal TS to the first electrode patterns 322a through 322n and the second electrode patterns 325a through 325n at a time sequence, and detects the discharge speed at the time sequence, the position of the touch trigger can be determined.
After a cycle of the first timing sequence and the second timing sequence (i.e., time t0 to tn) is completed, the oled touch panel is in the display state again (between time tn to tn + 1), and thus the oled touch panel generates a next display frame. Therefore, as long as the first time sequence and the second time sequence are repeated, the organic light emitting diode touch display panel can have both display and touch functions.
In some embodiments, the first electrode patterns 322a 322n and the second electrode patterns 325a 325n are charged simultaneously in a charging period, the first electrode patterns 322a 322n and the second electrode patterns 325a 325n are discharged simultaneously in a discharging period after the charging period, and the residual voltages of all the first electrode patterns 322a 322n and the second electrode patterns 325a 325n are compared to determine the touch position. Or in the discharge period, the time for which the first electrode patterns 322 a-322 n and the second electrode patterns 325 a-325 n are discharged to a predetermined voltage is compared to determine the touch position.
The touch method is a self-capacitance touch technology, but in other embodiments, a mutual capacitance touch technology may be used. In detail, at the second timing (between time t1 and time tn), the oled touch display panel is in a touch state, so that at the first sub-timing (between time t1 and time t 2), the touch signal circuit 398 provides the touch transmission signal TS to the first electrode pattern 322a, and the touch signal circuit 398 sequentially detects the coupling capacitances between the second electrode patterns 325a and 325b and the first electrode pattern 322a, while the common voltage source 396 is not powered to the isolation electrode pattern 328 at this time, so as to be at the floating potential. Therefore, with the isolation electrode pattern 328, coupling capacitance is generated between the first electrode pattern 322a and the second electrode patterns 325a and 325b, respectively, and the touch signal circuit 398 can determine whether each position is touched by sequentially detecting the coupling capacitance of the second electrode patterns 325a and 325 b.
Then, during the second sub-timing (between time t2 and time t 3), the touch signal circuit 398 provides the touch transmission signal TS to the second electrode pattern 325b, and then the touch signal circuit 398 sequentially detects the coupling capacitances between the first electrode patterns 322a and 322b and the second electrode pattern 325b, while the isolation electrode pattern 328 is at the floating potential. Therefore, with the isolated electrode pattern 328, coupling capacitance is generated between the second electrode pattern 325b and the first electrode patterns 322a and 322b, respectively, and the touch signal circuit 398 can determine whether each position is touched by sequentially detecting the coupling capacitance of the first electrode patterns 322a and 322 b. In this way, as long as the touch signal circuit 398 provides the touch transmission signal TS to the first electrode patterns 322a through 322n and the second electrode patterns 325a through 325n at a time sequence, and detects the coupling capacitance at a time sequence, the position of the touch trigger can be determined.
After a cycle of the first timing sequence and the second timing sequence (i.e., time t0 to tn) is completed, the oled touch display panel is in the display state again (between time tn to tn + 1), and thus the oled touch display panel generates a next display frame. Therefore, as long as the first time sequence and the second time sequence are repeated, the organic light emitting diode touch display panel can have both display and touch functions. Other details of this embodiment are the same as those of fig. 2 and 4, and therefore are not described again.
Referring to fig. 7, fig. 8A and fig. 8B together, wherein fig. 7 is a cross-sectional view of an organic light emitting diode touch display panel according to still another embodiment of the present invention, fig. 8A is a top view of a signal detector 394, a common voltage source 396 and a common electrode layer 430 of fig. 7, and fig. 8B is a top view of a touch signal source 392, a display signal source 397 and an anode layer 410 of fig. 7. In the present embodiment, the touch sensing device 300 includes a plurality of first electrode patterns 332a to 332n, a plurality of first isolation electrode patterns 336, a plurality of second electrode patterns 334a to 334n, and a plurality of second isolation electrode patterns 338. The first isolation electrode patterns 336 and the first electrode patterns 332a to 332n are alternately arranged along the first direction D3 (i.e., the direction in which the first isolation electrode patterns 336 and the first electrode patterns 332a to 332n are alternately arranged is the first direction D3), and constitute the common electrode layer 430. The second isolation electrode patterns 338 and the second electrode patterns 334a to 334n are alternately arranged along the second direction D4 (i.e. the direction in which the second isolation electrode patterns 338 and the second electrode patterns 334a to 334n are alternately arranged is the second direction D4), and the first direction D3 is substantially orthogonal to the second direction D4. The second electrode patterns 334a through 334n and the second isolation electrode pattern 338 constitute an anode layer 410 of the oled display assembly 400.
The anode layer 410 is divided into a plurality of pixel electrodes, which respectively correspond to the pixel units of the second substrate 200, in other words, each of the second electrode patterns 334a to 334n and the second isolation electrode pattern 338 is composed of a plurality of pixel electrodes of the anode layer 410. In addition, the first isolation electrode pattern 336 and the first electrode patterns 332a to 332n are made of the same material, are located in the same layer structure, and can be completed in the same process. For example, a patterned conductive layer may be deposited on the light emitting layer 420 to form the first isolation electrode pattern 336 and the first electrode patterns 332a to 332n, but the invention is not limited thereto. The first isolation electrode pattern 336 and the first electrode patterns 332a to 332n may be made of metal oxide.
The touch sensing device 300 of the present embodiment may be a Double-sided transparent conductive film (also referred to as Double-Indium Tin Oxide Structure, DITO) Structure. The second electrode patterns 334a to 334n can be used as transmission electrodes for touch control, and the first electrode patterns 332a to 332n can be used as receiving electrodes for touch control, so that the organic light emitting diode touch display panel can have both display and touch control functions only by two electrode layers (i.e., the anode layer 410 and the common electrode layer 430), which is beneficial to the thinning of the organic light emitting diode touch display panel.
In the present embodiment, an insulating layer (not shown) is present between the first isolation electrode pattern 336 and the first electrode patterns 332a to 332n and between the second isolation electrode pattern 338 and the second electrode patterns 334a to 334n. The description of the insulating layer is the same as that of FIG. 2, and thus, the description thereof is omitted.
Please refer to fig. 7. In this embodiment, the distance D between the common electrode layer 430 and the anode layer 410 (i.e., the thickness of the light emitting layer 420) is about 1 μm. Specifically, regarding the oled, the initial voltage of the electroluminescent layer 420 is about 2.5 to 3 volts (i.e., the display signal of the anode layer 410 is at least about 2.5 to 3 volts), and regarding the touch device, since the thickness of the stacked structure between the common electrode layer 430 and the anode layer 410 (i.e., the distance D) is not large, the voltage value of the touch transmission signal corresponding to the distance D is much lower than the initial voltage of the electroluminescent layer 420, i.e., the voltage value of the display signal is greater than the voltage value of the touch transmission signal, so that the oled does not conduct light in the touch state.
Please refer to fig. 7 to fig. 8B. In the present embodiment, the touch sensing device 300 further includes a touch signal source 392, a signal detector 394, a common voltage source 396 and a display signal source 397. The touch signal source 392 is connected to the second electrode patterns 334 a-334 n. The signal detector 394 is connected to the first electrode patterns 332a to 332n. A common voltage source 396 is connected to the first isolated electrode pattern 336 and a display signal source 397 is connected to the second isolated electrode pattern 338. The touch signal source 392 is used for providing a common voltage for the second electrode patterns 334a to 334n or a touch transmission signal, the signal detector 394 is used for providing a common voltage for the first electrode patterns 332a to 332n or detecting a coupling capacitance between the first electrode patterns 332a to 332n and the second electrode patterns 334a to 334n, the common voltage source 396 is used for providing a common voltage for the first isolated electrode pattern 336 or making the common voltage at a floating potential, and the display signal source 397 is used for providing a display signal for the second isolated electrode pattern 338 or making the display signal at the floating potential. In one or more embodiments, the touch signal source 392, the signal detector 394, the common voltage source 396 and the display signal source 397 may be different circuit elements respectively, or may be combined into a single circuit element, which is not limited in the disclosure.
Referring to fig. 8A to 9, fig. 9 is a signal diagram of the first electrode patterns 332a to 332n, the first isolation electrode pattern 336, the second electrode patterns 334a to 334n and the second isolation electrode pattern 338 of fig. 8A between time t0 and time tn + 1. For clarity, fig. 9 only shows the electrical signals of one pixel electrode of each of the second electrode patterns 334 a-334 n and the second isolation electrode pattern 338 because different pixel electrodes of the anode layer 410 may have different display signals DS in the display state. In operation, at the first timing (between time t0 and time t 1), the oled touch display panel is in the display state, so the touch signal source 392 provides the display signal DS to the second electrode patterns 334a to 334n, and the display signal source 397 provides the display signal DS to the second isolation electrode pattern 338. The different display signals DS may have different voltages to control the gray scales of the light emitting layers 420 (as shown in fig. 7). The signal detector 394 provides a common voltage Vcom to the first electrode patterns 332 a-332 n, and the common voltage source 396 provides the common voltage Vcom to the first isolation electrode pattern 336. Therefore, in the first time sequence, the organic light emitting diode touch display panel can generate a display frame.
Then, at a second timing (between time t1 and time tn), the oled touch display panel is in a touch state, so that the touch transmission signal TS is sequentially provided to the second electrode patterns 334a to 334n, the coupling capacitances of the first electrode patterns 332a to 332n are sequentially detected, and the first isolation electrode pattern 336 and the second isolation electrode pattern 338 are at a floating potential. In detail, at the first sub-timing (between time t1 and time t 2), the touch signal source 392 provides the touch transmission signal TS to the second electrode pattern 334a, and the signal detector 394 sequentially detects the coupling capacitance between the first electrode patterns 332a to 332n and the second electrode pattern 334a, while the common voltage source 396 is not powered to the first isolation electrode pattern 336 at this time, and the display signal source 397 is not powered to the second isolation electrode pattern 338, so that the first isolation electrode pattern 336 and the second isolation electrode pattern 338 are both at the floating potential. Therefore, coupling capacitances are generated between the second electrode patterns 334a and the first electrode patterns 332a to 332n, respectively, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances between the first electrode patterns 332a to 332n and the second electrode patterns 334 a.
Then, at the second sub-timing (between time t2 and time t 3), the touch signal source 392 provides the touch transmission signal TS to the second electrode pattern 334b, and the signal detector 394 sequentially detects the coupling capacitances between the first electrode patterns 332 a-332 n and the second electrode pattern 334b, while the first isolation electrode pattern 336 and the second isolation electrode pattern 338 are still at the floating potential. Therefore, coupling capacitances are generated between the second electrode pattern 334b and the first electrode patterns 332 a-332 n, respectively, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances between the first electrode patterns 332 a-332 n and the second electrode pattern 334 b. In this way, as long as the touch signal source 392 provides the touch transmission signal TS to the second electrode patterns 334a to 334n according to the timing, and the signal detector 394 detects the coupling capacitance of the first electrode patterns 332a to 332n according to the timing, the position of the touch excitation can be determined.
After a cycle of the first timing sequence and the second timing sequence (i.e., time t0 to tn) is completed, the oled touch panel is in the display state again (between time tn to tn + 1), and thus the oled touch panel generates a next display frame. Therefore, as long as the first time sequence and the second time sequence are repeated, the organic light emitting diode touch display panel can have both display and touch functions. Other details of this embodiment are the same as those of fig. 1, and therefore are not described again.
Referring to fig. 10, fig. 11A and fig. 12B together, wherein fig. 10 is a cross-sectional view illustrating an organic light emitting diode touch display panel according to still another embodiment of the present invention, fig. 11A is a top view illustrating a signal detector 394 and a touch sensing layer 350 of fig. 10, and fig. 11B is a top view illustrating a touch signal source 392, a common voltage source 396 and a common electrode layer 430 of fig. 10. In the present embodiment, the touch sensing device 300 includes a plurality of first electrode patterns 342 a-342 n, a plurality of first isolated electrode patterns 346, a plurality of second electrode patterns 354 a-354 n, and a plurality of second isolated electrode patterns 358. The first isolation electrode patterns 346 and the first electrode patterns 342 a-342 n are alternately arranged along the first direction D1 (i.e., the direction in which the first isolation electrode patterns 346 and the first electrode patterns 342 a-342 n are alternately arranged is the first direction D1), and constitute the common electrode layer 430. The second isolation electrode patterns 358 and the second electrode patterns 354a to 354n are alternately arranged along the second direction D2 (i.e., the direction in which the second isolation electrode patterns 358 and the second electrode patterns 354a to 354n are alternately arranged is the second direction D2). The first direction D1 is substantially orthogonal to the second direction D2. The second electrode patterns 354a 354n and the second isolation electrode pattern 358 constitute the touch sensing layer 350. The touch sensing layer 350 contacts the first substrate 100 and is separated from the common electrode layer 430 by a gap G.
The first isolation electrode pattern 346 and the first electrode patterns 342 a-342 n are made of the same material, are located in the same layer, and can be completed in the same process. For example, a patterned conductive layer may be deposited on the light emitting layer 420 to form the first isolation electrode pattern 346 and the first electrode patterns 342 a-342 n. In addition, the second isolation electrode pattern 358 and the second electrode patterns 354a to 354n are made of the same material, are located in the same layer structure, and can be completed in the same process. For example, a patterned conductive layer may be deposited on a surface of the first substrate 100 to form the second isolation electrode pattern 358 and the second electrode patterns 354a to 354n, but the invention is not limited thereto. The material of the first electrode patterns 342 a-342 n, the first isolation electrode patterns 346, the second electrode patterns 354 a-354 n, and the second isolation electrode patterns 358 may be metal oxide.
The touch sensing device 300 of the present embodiment may be a Double-sided transparent conductive film (also referred to as Double-Indium Tin Oxide Structure, DITO) Structure. The first electrode patterns 342a through 342n may serve as transmission electrodes for touch control, and the second electrode patterns 354a through 354n may serve as reception electrodes for touch control. Compared with the traditional organic light-emitting diode touch display panel, the touch display panel has the advantages that at least one touch electrode layer can be reduced, and the organic light-emitting diode touch display panel is favorably thinned.
In the present embodiment, insulating layers (not shown) are present between the first isolation electrode patterns 346 and the first electrode patterns 342 a-342 n, and between the second isolation electrode patterns 358 and the second electrode patterns 354 a-354 n. The description of the insulating layer is the same as that of FIG. 2, and thus, the description thereof is omitted.
In the present embodiment, the touch sensing device 300 further includes a touch signal source 392, a signal detector 394 and a common voltage source 396. The touch signal source 392 is connected to the first electrode patterns 342 a-342 n. The signal detector 394 is connected to the second electrode patterns 354 a-354 n, and the common voltage source 396 is connected to the first isolation electrode pattern 346. The touch signal source 392 is used for providing a common voltage or a touch transmission signal for the first electrode patterns 342 a-342 n, the signal detector 394 is used for detecting the coupling capacitance between the second electrode patterns 354 a-354 n and the first electrode patterns 342 a-342 n, and the common voltage source 396 is used for providing a common voltage for the first isolation electrode patterns 346 or making the same at a floating potential. In one or more embodiments, the touch signal source 392, the signal detector 394 and the common voltage source 396 may be different circuit elements respectively, or may be combined into a single circuit element, which is not limited in the disclosure.
Referring to fig. 11A to 12, fig. 12 is a signal diagram of the first electrode patterns 342 a-342 n, the first isolation electrode pattern 346, the second electrode patterns 354 a-354 n of fig. 11A, the second isolation electrode pattern 358 and the anode layer 410 of fig. 10 between time t0 and tn + 1. For clarity, only a portion of the display signal DS received by the anode layer 410 corresponding to a single pixel unit is shown. In operation, at a first timing (between time t0 and time t 1), the oled touch display panel is in a display state, so the touch signal source 392 provides a common voltage to the first electrode patterns 342 a-342 n, and the common voltage source 396 provides a common voltage to the first isolation electrode pattern 346. The signal detector 394 does not apply a current to the second electrode patterns 354a 354n, making them at a floating potential, and the second isolation electrode pattern 358 is also at a floating potential. Meanwhile, the second substrate 200 provides the display signal DS to the anode layer 410 (both shown in fig. 10). Therefore, in the first time sequence, the organic light emitting diode touch display panel can generate a display frame.
Then, at a second timing (between time t1 and time tn), the oled touch display panel is in a touch state, so that the touch transmission signal TS is sequentially provided to the first electrode patterns 342a to 342n, the coupling capacitances of the second electrode patterns 354a to 354n are sequentially detected, and the first isolation electrode pattern 346 and the second isolation electrode pattern 358 are at a floating potential. In detail, at the first sub-timing (between time t1 and time t 2), the touch signal source 392 provides the touch transmission signal TS to the first electrode pattern 342a, and the signal detector 394 sequentially detects the coupling capacitances between the second electrode patterns 354a 354n and the first electrode pattern 342a, while the common voltage source 396 is not powered to the first isolation electrode pattern 346 at this time, so that the first isolation electrode pattern 346 is at a floating potential, and the second isolation electrode pattern 358 is also at a floating potential. Therefore, coupling capacitances are generated between the first electrode pattern 342a and the second electrode patterns 354 a-354 n, respectively, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances of the second electrode patterns 354 a-354 n.
Then, at the second sub-timing (between time t2 and time t 3), the touch signal source 392 provides the touch transmission signal TS to the first electrode pattern 342b, and the signal detector 394 sequentially detects the coupling capacitances between the second electrode patterns 354 a-354 n and the first electrode pattern 342b, while the first isolation electrode pattern 346 and the second isolation electrode pattern 358 are at the floating potential. Therefore, coupling capacitances are generated between the first electrode pattern 342b and the second electrode patterns 354 a-354 n, respectively, and the signal detector 394 can determine whether each position is touched by sequentially detecting the coupling capacitances of the second electrode patterns 354 a-354 n. In this way, as long as the touch signal source 392 provides the touch transmission signal TS to the first electrode patterns 342 a-342 n at a timing, and the signal detector 394 detects the coupling capacitance of the second electrode patterns 354 a-354 n at a timing, the position of the touch trigger can be determined.
After a cycle of the first timing sequence and the second timing sequence (i.e., time t0 to tn) is completed, the oled touch panel is in the display state again (between time tn to tn + 1), and thus the oled touch panel generates a next display frame. Therefore, as long as the first time sequence and the second time sequence are repeated, the organic light emitting diode touch display panel can have both display and touch functions. Other details of this embodiment are the same as those of fig. 1, and therefore are not described again.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (6)
1. A touch method of an organic light emitting diode touch display panel is characterized by comprising the following steps:
providing a common voltage to a plurality of first electrode patterns and a plurality of first isolation electrode patterns of a touch sensing assembly of the organic light emitting diode touch display panel at a first time sequence, wherein at least part of the touch sensing assembly is positioned on a common electrode layer, and providing a display signal to an anode layer of an organic light emitting diode display assembly of the organic light emitting diode touch display panel, the common voltage and the display signal form a current in a light emitting layer, and the light emitting layer is positioned between the common electrode layer and the anode layer; and
sequentially providing a touch transmission signal to the first electrode patterns at a second time sequence, sequentially detecting the coupling capacitance of the second electrode patterns of the touch sensing assembly, and making the first isolation electrode patterns all at a floating potential,
and when the second time sequence is carried out, the anode layer is not electrified.
2. The touch method of the oled touch panel as claimed in claim 1, wherein the common voltage is further provided to the second electrode pattern in the first timing sequence.
3. The touch method of the oled touch display panel of claim 2, wherein in the second timing sequence:
providing the touch transmission signal to one of the first electrode patterns at a first sub-timing, and sequentially detecting the coupling capacitance of the second electrode pattern; and
and providing the touch transmission signal to the other of the first electrode patterns during a second sub-time sequence, and sequentially detecting the coupling capacitance of the second electrode patterns.
4. The touch method of the oled touch display panel as claimed in claim 2, wherein in the second timing sequence:
and providing the touch transmission signal to one of the first electrode patterns in a sub-time sequence, and sequentially detecting the coupling capacitance of the second electrode pattern adjacent to the first electrode pattern.
5. The method of claim 1, wherein the touch sensing device further comprises a plurality of second isolated electrode patterns, wherein the second electrode patterns and the second isolated electrode patterns are both at a floating potential in the first timing sequence, and wherein the second isolated electrode patterns are both at a floating potential in the second timing sequence.
6. A touch method of an organic light emitting diode touch display panel is characterized by comprising the following steps:
providing a common voltage to a plurality of first electrode patterns and a plurality of first isolation electrode patterns of a touch sensing assembly of the organic light emitting diode touch display panel and providing a display signal to a plurality of second electrode patterns and a plurality of second isolation electrode patterns of the touch sensing assembly at a first time sequence; and
sequentially providing a touch transmission signal to the second electrode pattern at a second time sequence, sequentially detecting the coupling capacitance of the first electrode pattern, and making the first isolation electrode pattern and the second isolation electrode pattern at a floating potential,
the first electrode pattern and the first isolation electrode pattern form a common electrode layer of the organic light emitting diode display assembly, the second electrode pattern and the second isolation electrode pattern form an anode layer of the organic light emitting diode display assembly, and the voltage value of the display signal is greater than that of the touch transmission signal.
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| CN105990397B (en) * | 2015-02-05 | 2019-09-06 | 宸鸿光电科技股份有限公司 | Organic Light Emitting Diode touch-control display panel |
| CN107731865B (en) * | 2016-08-12 | 2021-04-06 | 鸿富锦精密工业（深圳）有限公司 | OLED display device |
| CN106354302B (en) * | 2016-08-19 | 2019-03-15 | 京东方科技集团股份有限公司 | Embedded transparent touch display panel and its manufacturing method, driving method |
| TWI605370B (en) * | 2016-10-24 | 2017-11-11 | Touch display device | |
| CN109164935B (en) * | 2018-08-24 | 2022-07-19 | 敦泰电子有限公司 | Touch display panel, touch driving circuit and touch driving method |
| TWI720496B (en) * | 2019-05-24 | 2021-03-01 | 智晶光電股份有限公司 | Display module with touch function |
| CN112216731B (en) * | 2020-10-13 | 2022-10-14 | 云谷（固安）科技有限公司 | Display panel, preparation method thereof and display device |
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| CN101894856A (en) * | 2009-05-22 | 2010-11-24 | 上海天马微电子有限公司 | Organic light-emitting diode (OLED) display screen |
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| KR101469487B1 (en) * | 2012-09-18 | 2014-12-05 | 엘지디스플레이 주식회사 | Organic Emitting Display Device |
| TWI554993B (en) * | 2012-11-20 | 2016-10-21 | 劍揚股份有限公司 | Display driving circuit with photo detecting input |
| CN103914164A (en) * | 2013-01-05 | 2014-07-09 | 宸鸿光电科技股份有限公司 | Touch panel |
| CN104252073B (en) * | 2013-06-27 | 2017-11-03 | 瀚宇彩晶股份有限公司 | Touch liquid crystal display |
| CN203733090U (en) * | 2013-08-02 | 2014-07-23 | 敦泰科技有限公司 | Self-capacitance touch screen and touch display device |
| CN109062448B (en) * | 2013-11-12 | 2021-07-02 | 宸鸿光电科技股份有限公司 | Organic light emitting diode touch display device |
| CN104637976B (en) * | 2013-11-12 | 2018-10-19 | 宸鸿光电科技股份有限公司 | Organic Light Emitting Diode touch control display device |
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| CN103984442B (en) * | 2014-05-27 | 2017-10-31 | 上海和辉光电有限公司 | Embedded active matrix organic light-emitting diode contact panel |
| CN105990397B (en) * | 2015-02-05 | 2019-09-06 | 宸鸿光电科技股份有限公司 | Organic Light Emitting Diode touch-control display panel |
| CN204361102U (en) * | 2015-02-05 | 2015-05-27 | 宸鸿光电科技股份有限公司 | Organic Light Emitting Diode touch-control display panel |
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| CN101894856A (en) * | 2009-05-22 | 2010-11-24 | 上海天马微电子有限公司 | Organic light-emitting diode (OLED) display screen |
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| TW201629731A (en) | 2016-08-16 |
| CN105990397B (en) | 2019-09-06 |
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| TWM522412U (en) | 2016-05-21 |
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