Electronic paper display panel, touch positioning method and display device

Abstract

The application relates to an electronic paper display panel, a touch positioning method and a display device. The electronic paper display panel comprises a pixel layer, the pixel layer comprises a plurality of first pixels and a plurality of second pixels, the first pixel is composed of at least one first electrophoretic cell, the first electrophoretic cell contains color-developing particles, the color-developing particles in the first electrophoretic cell in the first pixel are used for displaying image information, the second pixel is composed of at least one second electrophoretic cell, the second electrophoretic cell contains color-developing particles, the color-developing particles in the second electrophoretic cell in the second pixel are used for displaying writing note information. The electronic paper display panel solves the problem that in the prior art, when a single pixel is used for displaying writing note information, the image information originally displayed by the pixel is covered by the writing note information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic paper display, and particularly relates to an electronic paper display panel, a touch positioning method and a display device. BACKGROUND

[0002] At present, in the electronic paper display panel, a single pixel is used for displaying image information or used for displaying writing note information at the same time node, and when the single pixel is used for displaying the writing note information, the image information originally displayed by the pixel is covered by the writing note information. SUMMARY

[0003] The present application provides an electronic paper display panel, a touch positioning method of the electronic paper display panel and a display device, so as to solve the problem that the image information originally displayed by a single pixel is covered by the writing note information when the single pixel is used for displaying the writing note information.

[0004] In a first aspect, the present application provides an electronic paper display panel, comprising: a pixel layer, the pixel layer comprising a plurality of first pixels and a plurality of second pixels, the first pixel being composed of at least one first electrophoretic cell, the first electrophoretic cell in the first pixel being used for displaying image information, the second pixel being composed of at least one second electrophoretic cell, the second electrophoretic cell in the second pixel being used for displaying writing note information.

[0005] Optionally, the second pixel is arranged between two adjacent first pixels in a row of the first pixels, and / or the second pixel is arranged between two adjacent first pixels in a column of the first pixels.

[0006] Optionally, the second electrophoretic unit includes negatively charged color particles and positively charged black particles, the mass of the color particles is greater than the mass of the black particles, and the charge of the color particles is less than the charge of the black particles. The electronic paper display panel further includes: a first electrode layer including a plurality of first electrodes, each of the first electrodes corresponding to one of the second pixels, and each of the first electrodes being arranged directly above the top of the second electrophoretic unit in the corresponding second pixel; a second electrode layer including a plurality of second electrodes, each of the second electrodes corresponding to one of the second pixels, and each of the second electrodes being arranged directly below the bottom of the second electrophoretic unit in the corresponding second pixel; and a sensing and rubbing layer including a plurality of flexible transparent rubbing electronics transistors, each of the flexible transparent rubbing electronics transistors corresponding to one of the first electrodes, each of the flexible transparent rubbing electronics transistors being arranged directly above the corresponding first electrode, and the output end of each of the flexible transparent rubbing electronics transistors being connected to the corresponding first electrode. In the non-writing and non-touching mode of the second pixel, the input end of the flexible transparent rubbing electronics transistor corresponding to the second pixel is configured to receive a first negative current signal, the output end of the flexible transparent rubbing electronics transistor is configured to output a second negative current signal to the first electrode corresponding to the second pixel, and the second electrode corresponding to the second pixel is configured to receive a first positive current signal to drive the black particles in each of the second electrophoretic units in the second pixel to move to the top of the second electrophoretic unit and drive the color particles in each of the second electrophoretic units in the second pixel to move to the bottom of the second electrophoretic unit.

[0007] Optionally, when the second pixel is in the preparation writing mode, the input end of the flexible transparent tribological transistor corresponding to the second pixel is used to receive a second positive current signal, the movable rubbing part of the flexible transparent tribological transistor corresponding to the second pixel is used to not move, the output end of the flexible transparent tribological transistor outputs a zero current signal to the first electrode corresponding to the second pixel, the second electrode corresponding to the second pixel is used to receive a third negative current signal, to drive the black particles in each second electrophoretic cell in the second pixel to move to the bottom of the second electrophoretic cell, and to keep the color particles in each second electrophoretic cell in the second pixel at the bottom of the second electrophoretic cell, and the absolute value of the third negative current signal is less than the absolute value of the second negative current signal; when the second pixel is in the writing mode, the movable rubbing part of the flexible transparent tribological transistor corresponding to the second pixel is used to move a first displacement value, and the output end of the flexible transparent tribological transistor outputs the first positive current signal to the first electrode, to drive the color particles in each second electrophoretic cell in the second pixel to move to the top of the second electrophoretic cell.

[0008] Optionally, the pixel layer further comprises: a plurality of third electrodes and a plurality of fourth electrodes, the third electrode corresponds to the second electrophoretic cell one by one, the third electrode is arranged outside the first segment of the first side wall of the corresponding second electrophoretic cell, the fourth electrode corresponds to the second electrophoretic cell one by one, the fourth electrode is arranged outside the second segment of the second side wall of the corresponding second electrophoretic cell, and the first segment and the second segment are close to the bottom of the second electrophoretic cell; wherein, when one of the second pixels is in the preparation writing mode, the corresponding third electrode of each second electrophoretic cell in the second pixel is used to receive a third positive current signal, and the corresponding fourth electrode of each second electrophoretic cell in the second pixel is used to receive the third positive current signal, to drive the color particles in each second electrophoretic cell in the second pixel to move to the first segment of the first side wall of the second electrophoretic cell and the second segment of the second side wall of the second electrophoretic cell, and the third positive current signal is less than the first positive current signal.

[0009] Optionally, when the second pixel is in the non-writing non-touch mode, the corresponding third electrode of each second electrophoretic cell in the second pixel is used to receive a zero current signal, and the corresponding fourth electrode of each second electrophoretic cell in the second pixel is used to receive the zero current signal.

[0010] Optionally, when the second pixel is in the touch mode, the rubbable moving part of the flexible transparent rubane transistor corresponding to the second pixel is used to move a second displacement value, so that the output end of the flexible transparent rubane transistor outputs a third negative current signal to the first electrode, and the absolute value of the third negative current signal is greater than the absolute value of the second negative current signal.

[0011] Optionally, when the second pixel is in the preparation touch mode, the third electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal.

[0012] In a second aspect, the present application provides a touch positioning method of an electronic paper display panel, the electronic paper display panel is divided into a plurality of regions, the plurality of regions correspond to the plurality of second pixels one by one, and the second pixels are located in the corresponding regions. The method comprises the following steps: obtaining current signals in a plurality of first electrodes corresponding to a plurality of second pixels; and determining a touch region according to the current signals in the first electrodes corresponding to the plurality of second pixels, the touch region is composed of at least one region corresponding to the second pixel, and the absolute values of the current signals in the first electrodes corresponding to the second pixels in the touch region are all greater than the absolute value of a second negative current signal, the second negative current signal is a current signal in the first electrode corresponding to the second pixel when the second pixel is in a preparation touch mode.

[0013] In a third aspect, the present application provides a display device, which comprises: any one of the electronic paper display panels; a driving substrate, which is connected with a plurality of first electrodes in the display panel through a plurality of first wires, connected with a plurality of second electrodes in the display panel through a plurality of second wires, connected with a plurality of third electrodes in the display panel through a plurality of third wires, connected with a plurality of fourth electrodes in the display panel through a plurality of fourth wires, and connected with input ends of a plurality of flexible transparent rubane transistors in the display panel through a plurality of fifth wires.

[0014] In the embodiments of the present application, the pixel layer of the electronic paper display panel is divided into first pixels and second pixels, the first pixels are used for displaying image information alone, the second pixels are used for displaying writing note information alone, and the first pixels and the second pixels do not interfere with each other, thereby solving the problem that when a single pixel is used for displaying writing note information, the image information originally displayed by the pixel is covered by the writing note information. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the field, other drawings can also be obtained based on these drawings without any creative effort.

[0017] One or more embodiments are illustrated by way of example in the drawings that are not intended to be limiting of the application, and the same or similar reference numerals designate similar components throughout the drawings and specification. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the embodiments.

[0018] Figure 1 A structural schematic diagram of a flexible light-transmitting rubbing electronics transistor in the prior art;

[0019] Figure 2 A structural schematic diagram of an electronic paper display panel provided by an embodiment of the present application;

[0020] Figure 3 A structural schematic diagram of an electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is a black-and-white pixel;

[0021] Figure 4 A structural schematic diagram of an electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is a color pixel;

[0022] FIG. 5(a) is a structural schematic diagram of a first electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is in a non-writing non-touch mode;

[0023] FIG. 5(b) is a structural schematic diagram of the first electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is in a writing preparation mode;

[0024] FIG. 5(c) is a structural schematic diagram of the first electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is in a writing mode;

[0025] FIG. 5(d) is a structural schematic diagram of a second electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is in a writing preparation mode;

[0026] FIG. 5(e) is a structural schematic diagram of the second electronic paper display panel provided by an embodiment of the present application, in the case where the second pixel is in a writing mode;

[0027] FIG. 5(f) is a structural schematic diagram of a second electronic paper display panel in a non-writing non-touch mode of a second pixel according to an embodiment of the present application;

[0028] FIG. 6(a) is a structural schematic diagram of an electronic paper display panel in a preparation touch mode of a second pixel according to an embodiment of the present application;

[0029] FIG. 6(b) is a structural schematic diagram of an electronic paper display panel in a touch mode of a second pixel according to an embodiment of the present application;

[0030] Figure 7 FIG. 7 is a flowchart of a touch positioning method of an electronic paper display panel according to an embodiment of the present application;

[0031] The description of the drawings is as follows:

[0032] 10, first pixel; 11, red sub-pixel; 12, green sub-pixel; 13, blue sub-pixel; 20, second pixel; 21, second electrophoretic cell; 30, first electrode; 31, second electrode; 32, third electrode; 33, fourth electrode; 40, flexible substrate; 41, gate; 42, gate insulating layer; 43, semiconductor layer; 44, source; 45, fifth electrode; 46, sixth electrode; 47, flexible substrate; 48, rubbing layer. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the components and arrangements of the various examples are shown in the following description. It will be appreciated, however, that these are only examples and are not intended to limit the present application in any way. Moreover, the present application can include various examples in which the components and / or functions can be arranged in different configurations and / or orders than those shown in the drawings. The various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.

[0035] The following explanations of terms used in the present application are as follows.

[0036] Flexible transparent rubbing electronics transistor: the structure and working principle of the flexible transparent rubbing electronics transistor are as follows.

[0037] Structure of the flexible transparent rubbing electronics transistor: as shown inFigure 1 As shown in the figure, the flexible light-transmitting triboelectric transistor comprises a flexible substrate 40, a thin film transistor and a triboelectric generator. The thin film transistor comprises a gate 41 formed on the flexible substrate 40, a gate insulating layer 42 formed on the gate 41, a semiconductor layer 43 formed on the gate insulating layer 42, a source 44 and a drain formed on two sides of the semiconductor layer 43 and forming ohmic contact with the semiconductor layer 43, and the semiconductor layer 43 between the source 44 and the drain forms a conductive channel with a width of 60 μm. The triboelectric generator comprises a fifth electrode 45, a sixth electrode 46 and a movable triboelectric part arranged side by side. The fifth electrode 45 and the sixth electrode 46 are formed on the flexible substrate 40 and insulated from each other. The movable triboelectric part is opposite to the fifth electrode 45 and the sixth electrode 46. The movable triboelectric part comprises a flexible base 47 and a triboelectric layer 48. The fifth electrode 45 is connected to the source 44 or the drain of the thin film transistor. The sixth electrode 46 is connected to the gate 41 of the thin film transistor. The gate 41, the gate insulating layer 42, the semiconductor layer 43, the source 44 and the drain are all thin film materials. Figure 1 In the embodiment, since the fifth electrode 45 is connected to the source 44 of the thin film transistor, the input end of the flexible light-transmitting triboelectric transistor is the source 44, and the output end of the flexible light-transmitting triboelectric transistor is the drain. If the fifth electrode 45 is connected to the drain of the thin film transistor, the input end of the flexible light-transmitting triboelectric transistor is the drain, and the output end of the flexible light-transmitting triboelectric transistor is the source. Figure 1 Not shown.

[0038] Working principle of the flexible light-transmitting triboelectric transistor: Figure 1 In the embodiment, "+" represents positive charge, and "-" represents negative charge. As shown in the figure, Figure 1 As shown in the figure, the movable triboelectric part (the flexible base 47 and the triboelectric layer 48) can slide between the fifth electrode 45 and the sixth electrode 46 under the action of external force, thereby forming a potential difference between the fifth electrode 45 and the sixth electrode 46. In the initial state, the triboelectric layer 48 is in close contact with the fifth electrode 45. Due to different electron binding abilities, the surface of the triboelectric layer 48 is negatively charged, and the fifth electrode 45 is positively charged by an equal amount. At this time, the positive and negative charges on the upper and lower friction surfaces are in a balanced state, so the voltage of the gate 41 is 0, and the width of the conductive channel between the source 44 and the drain is not affected. Under the action of external force, the movable triboelectric part (the flexible base 47 and the triboelectric layer 48) moves towards the sixth electrode 46. Under the induction of the negative charge on the triboelectric layer 48, the negative charge on the sixth electrode 46 flows to the gate 41. Due to the lack of binding of negative charge, the positive charge on the fifth electrode 45 flows to the source 44. Therefore, a positive potential difference acts on the gate 41 and the source 44 of the organic thin film transistor, causing the width of the conductive channel between the source 44 and the drain to increase, and the source-drain current to increase. The source-drain current increases with the increase of the displacement value d of the movable triboelectric part.

[0039] In order to solve the technical problem that the original image information of a single pixel is covered by the written note information when the single pixel is used to display the written note information in the prior art, the application provides an electronic paper display panel, a touch positioning method of the electronic paper display panel, and a display device, which can solve the problem that the original image information of a single pixel is covered by the written note information when the single pixel is used to display the written note information in the prior art.

[0040] Figure 2 An electronic paper display panel provided by an embodiment of the application is shown in FIG. 1. Figure 2 As shown in FIG. 1, the electronic paper display panel comprises:

[0041] a pixel layer, the pixel layer comprises a plurality of first pixels 10 and a plurality of second pixels 20, the first pixel 10 is composed of at least one first electrophoretic unit, the first electrophoretic unit in the first pixel 10 is used to display image information, the second pixel 20 is composed of at least one second electrophoretic unit, the second electrophoretic unit in the second pixel 20 is used to display note information.

[0042] Specifically, the first electrophoretic unit can be made of an electrophoretic microcapsule or a microcup electrophoretic cell. In the two structures, a plurality of black particles with positive charges and color-developing particles with negative charges are suspended. Under the action of an electric field, the color-developing particles with negative charges move to the top of the electrophoretic microcapsule or the second electrophoretic unit, realizing color development of image information. The color-developing particles in the first electrophoretic unit in the first pixel in the application display image information by using an existing electronic paper display method, and thus, detailed description is not made herein.

[0043] Specifically, the second electrophoretic unit can be made of an electrophoretic microcapsule or a microcup electrophoretic cell.

[0044] Specifically, the color-developing particles in the second electrophoretic unit in the second pixel can be any one of red, green, blue, and the like, which is not limited in the application.

[0045] Specifically, the application can turn off all the second pixels, turn on all the first pixels, and make the electronic paper display panel only used for display, can turn off all the first pixels, turn on all the second pixels, and make the electronic paper display panel only used for writing notes, or turn on all the first pixels and all the second pixels at the same time, and make the electronic paper display panel only used for display and writing notes at the same time.

[0046] By the above embodiment, the pixel layer of the electronic paper display panel is divided into first pixels and second pixels, the first pixels are used for displaying image information alone, the second pixels are used for displaying writing note information alone, and the first pixels and the second pixels do not interfere with each other, thereby solving the problem that when a single pixel is used for displaying writing note information, the image information originally displayed by the pixel is covered by the writing note information.

[0047] In an alternative embodiment, the second pixel is arranged between two adjacent first pixels in a row of the first pixels, and / or the second pixel is arranged between two adjacent first pixels in a column of the first pixels.

[0048] Specifically, the second pixel is arranged between two adjacent first pixels in a row of the first pixels, and the second pixel is arranged between two adjacent first pixels in a column of the first pixels. In this case, when writing display is performed, the second pixel arranged between two adjacent first pixels in a row of the first pixels can be used to display writing note information, or the second pixel arranged between two adjacent first pixels in a column of the first pixels can be used to display writing note information, or the second pixel arranged between two adjacent first pixels in a row of the first pixels and the second pixel arranged between two adjacent first pixels in a column of the first pixels can be used to display writing note information.

[0049] Specifically, the first pixel can be a black-and-white pixel, i.e., the first pixel can only display white or black, as shown in FIG. 1. Figure 3 As shown in FIG. 2, the second pixel 20 is arranged between two adjacent first pixels 10 in a row of the first pixels 10, and / or the second pixel 20 is arranged between two adjacent first pixels 10 in a column of the first pixels 10.

[0050] Specifically, in the case where the first pixel is a color pixel, as shown in FIG. 3. Figure 4 As shown in FIG. 4, the first pixel 10 includes a red sub-pixel 11, a green sub-pixel 12, and a blue sub-pixel 13, the second pixel 20 is arranged between two adjacent first pixels 10 in a row of the first pixels 10, and / or the second pixel 20 is arranged between two adjacent first pixels 10 in a column of the first pixels 10.

[0051] In this embodiment, according to the requirement of the display resolution of the writing note information, the second pixel can be arranged between two adjacent first pixels in a row of the first pixels, and / or the second pixel can be arranged between two adjacent first pixels in a column of the first pixels.

[0052] In an alternative embodiment, if the writing note information display resolution is required to be low, a second pixel can be arranged between two groups of first pixels in a row of first pixels, or a second pixel can be arranged directly below a group of first pixels in a row of first pixels.

[0053] In an alternative embodiment, the color-developing particles in the second electrophoretic unit in the second pixel are negatively charged, the second electrophoretic unit in the second pixel further comprises black particles that are positively charged, the mass of the color-developing particles is greater than the mass of the black particles, and the charge of the color-developing particles is less than the charge of the black particles. As shown in FIG. 5(a), the electronic paper display panel further comprises:

[0054] a first electrode layer, the first electrode layer comprises a plurality of first electrodes 30, the first electrodes 30 correspond to the second pixels 20 one by one, and the first electrodes 30 are arranged directly above the top of the second electrophoretic unit 21 in the corresponding second pixel 20;

[0055] Specifically, the first electrode is a light-transmitting electrode.

[0056] Specifically, the electronic paper display panel comprises a first flexible substrate, the first flexible substrate is light-transmitting, and the first electrode layer is arranged on the side of the first flexible substrate close to the pixel layer.

[0057] a second electrode layer, the second electrode layer comprises a plurality of second electrodes 31, the second electrodes 31 correspond to the second pixels 20 one by one, and the second electrodes 31 are arranged directly below the bottom of the second electrophoretic unit 21 in the corresponding second pixel 20;

[0058] Specifically, the electronic paper display panel comprises a second flexible substrate, and the second electrode layer is arranged on the side of the second flexible substrate close to the pixel layer.

[0059] a sensing tribological layer, the sensing tribological layer comprises a plurality of flexible light-transmitting tribological electronic transistors, the flexible light-transmitting tribological electronic transistors correspond to the first electrodes 30 one by one, the flexible light-transmitting tribological electronic transistors are arranged directly above the corresponding first electrodes 30, and the output ends of the flexible light-transmitting tribological electronic transistors are connected to the first electrodes 30 corresponding to the flexible light-transmitting tribological electronic transistors;

[0060] Specifically, the electronic paper display panel comprises a flexible encapsulation layer, and the sensing tribological layer is arranged on the side of the flexible encapsulation layer close to the first electrode layer.

[0061] In one of the aforementioned second pixels 20 being in a non-writing, non-touch mode, the input terminal of the flexible light-transmitting triboelectric transistor corresponding to the second pixel 20 is used to receive a first negative current signal, causing the output terminal of the flexible light-transmitting triboelectric transistor to output a second negative current signal to the first electrode 30 corresponding to the second pixel 20. The second electrode 31 corresponding to the second pixel 20 is used to receive a first positive current signal, thereby driving the black particles in each second electrophoretic unit 21 of the second pixel 20 to move to the top of the second electrophoretic unit 21, and driving the color particles in each second electrophoretic unit 21 of the second pixel 20 to move to the bottom of the second electrophoretic unit 21.

[0062] Specifically, based on the working principle of the flexible light-transmitting triboelectric transistor, when the movable friction part of the flexible light-transmitting triboelectric transistor does not move, the current at the input terminal of the flexible light-transmitting triboelectric transistor cannot reach the output terminal of the flexible light-transmitting triboelectric transistor. Therefore, the absolute value of the first negative current signal is greater than the absolute value of the second negative current signal.

[0063] In this embodiment, when the second pixel is in non-writing and non-touch mode, neither the writing function nor the touch function is enabled. The input terminal of the flexible light-transmitting triboelectric transistor corresponding to the second pixel is used to receive the first negative current signal, so that the output terminal of the flexible light-transmitting triboelectric transistor outputs the second negative current signal to the first electrode corresponding to the second pixel. The second electrode corresponding to the second pixel is used to receive the first positive current signal, as shown in Figure 5(a). At this time, the first electrode 30 has a medium-strong negative charge (--), and the second electrode 31 has a medium-strong positive charge (++). The white particles in Figure 5(a) represent color particles. The black particles in each second electrophoretic unit 21 in the second pixel 20 are attracted by the first electrode 30 and moved to the top of the second electrophoretic unit 21. The color particles in each second electrophoretic unit 21 in the second pixel 20 are attracted by the second electrode 31 and moved to the bottom of the second electrophoretic unit 21. At this time, the second pixel does not display writing notes information.

[0064] In an alternative embodiment, when the second pixel is in the writing mode, the movable rubbing part of the flexible transparent rubbing electronics transistor corresponding to the second pixel is used to move a first displacement value, so that the output end of the flexible transparent rubbing electronics transistor outputs the first positive current signal to the first electrode, so as to drive the color-developing particles in each second electrophoretic cell in the second pixel to move to the top of the second electrophoretic cell.

[0065] In the writing mode of the second pixel, the movable rubbing part of the flexible transparent rubbing electronics transistor corresponding to the second pixel is used to move a first displacement value, so that the output end of the flexible transparent rubbing electronics transistor outputs the first positive current signal to the first electrode, so as to drive the color-developing particles in each second electrophoretic cell in the second pixel to move to the top of the second electrophoretic cell.

[0066] Specifically, based on the working principle of the flexible transparent rubbing electronics transistor, when the movable rubbing part of the flexible transparent rubbing electronics transistor moves, the current reaching the output end of the flexible transparent rubbing electronics transistor from the input end of the flexible transparent rubbing electronics transistor increases, but not all of it reaches the output end. Therefore, the second positive current signal is greater than the first positive current signal.

[0067] Specifically, in the writing mode of the second pixel, the input end of the flexible transparent rubbing electronics transistor corresponding to the second pixel is used to receive the second positive current signal, so that the output end of the flexible transparent rubbing electronics transistor outputs a zero current signal to the first electrode corresponding to the second pixel, and the second electrode corresponding to the second pixel is used to receive a third negative current signal. The difference between the writing mode of the second pixel and the preparation writing mode of the second pixel is that the movable rubbing part of the flexible transparent rubbing electronics transistor corresponding to the second electrophoretic cell does not move in the preparation writing mode of the second pixel, i.e., the user does not write, and the movable rubbing part of the flexible transparent rubbing electronics transistor corresponding to the second electrophoretic cell moves a first displacement value in the writing mode of the second pixel, i.e., the user writes.

[0068] Specifically, the user's finger moves on the side of the flexible encapsulation layer away from the induction rubbing layer, and an external force is applied to the movable rubbing part of the flexible transparent rubbing electronics transistor through the flexible encapsulation layer, so that the movable rubbing part of the flexible transparent rubbing electronics transistor moves.

[0069] In this embodiment, when the second pixel is in the writing mode, the writing function is turned on, but the user has not yet written, the input end of the flexible transparent tribological electronic transistor corresponding to the second pixel is used to receive the second positive current signal, the flexible transparent tribological electronic transistor corresponding to the second electrophoretic unit is used to not move, so that the output end of the flexible transparent tribological electronic transistor outputs a zero current signal to the first electrode corresponding to the second pixel, the second electrode corresponding to the second pixel is used to receive the third negative current signal, the absolute value of the third negative current signal is smaller than the absolute value of the second negative current signal, as shown in FIG. 5 (b), the first electrode 30 is not charged, and the second electrode 31 has weak negative charge (-), the white particles in FIG. 5 (b) represent the color developing particles, at this time, the black particles are quickly attracted to the bottom of the second electrophoretic unit 21 by the second electrode 31 because the black particles have strong positive charge and small mass, the color developing particles have weak negative charge, large mass, slow movement, and the repulsion of the second electrode 31 to the color developing particles is small, compared with the non-writing and non-touch mode of the second pixel, the position of the color developing particles basically does not change, the color developing particles in each second electrophoretic unit 21 in the second pixel 20 remain at the bottom of the second electrophoretic unit 21, and the black particles in each second electrophoretic unit 21 in the second pixel 20 cover the color of the color developing particles in the second electrophoretic unit 21, therefore, the second pixel does not display the writing note information, when the second pixel is in the writing mode, at this time, the user writes, the movable friction part of the flexible transparent tribological electronic transistor corresponding to the second pixel is used to move the first displacement value, that is, the finger of the user drives the movable friction part of the flexible transparent tribological electronic transistor to move the first displacement value, so that the output end of the flexible transparent tribological electronic transistor outputs the first positive current signal to the first electrode, as shown in FIG. 5 (c), at this time, the first electrode 30 has medium strong positive charge (++), the second electrode 31 has weak negative charge (-), the white particles in FIG. 5 (c) represent the color developing particles, at this time, the black particles in each second electrophoretic unit 21 continue to remain at the bottom of the second electrophoretic unit 21, and the color developing particles in each second electrophoretic unit 21 in the second pixel 20 are attracted to the top of the second electrophoretic unit 21 by the first electrode 30, so as to display the writing note information.

[0070] In an alternative embodiment, as shown in FIG. 5 (d), the pixel layer described above further comprises:

[0071] a plurality of third electrodes 32 and a plurality of fourth electrodes 33, the third electrode 32 corresponding to each of the second electrophoretic units 21, the third electrode 32 being disposed outside the first section of the first side wall of the corresponding second electrophoretic unit 21, the fourth electrode 33 corresponding to each of the second electrophoretic units 21, the fourth electrode 33 being disposed outside the second section of the second side wall of the corresponding second electrophoretic unit 21, the first section and the second section being close to the bottom of the second electrophoretic unit 21;

[0072] wherein, in a case that one of the second pixels 20 is in the preparation writing mode, the corresponding third electrode 32 of each of the second electrophoretic units 21 in the second pixel 20 is configured to receive a third positive current signal, and the corresponding fourth electrode 33 of each of the second electrophoretic units 21 in the second pixel 20 is configured to receive the third positive current signal, so as to drive the color-developing particles in each of the second electrophoretic units 21 in the second pixel 20 to move to the first section of the first side wall of the second electrophoretic unit 21 and the second section of the second side wall of the second electrophoretic unit 21, the third positive current signal being smaller than the first positive current signal.

[0073] Specifically, in a case that the second pixel is in the writing mode, the corresponding third electrode of each of the second electrophoretic units in the second pixel is configured to receive a third positive current signal, and the corresponding fourth electrode of each of the second electrophoretic units in the second pixel is configured to receive the third positive current signal.

[0074] In the embodiment, as shown in FIG. 5(d), when the second pixel is in the preparation writing mode, the first electrode 30 is not charged, and the second electrode 31 is weakly negatively charged (-). Since the color-developing particles are weakly negatively charged, and the color-developing particles are heavy and slow in movement, and the weak negative charge of the second electrode 31 has little repulsive effect on the color-developing particles, the position of the color-developing particles in the second pixel 20 basically does not change. The color-developing particles in each second electrophoretic cell 21 of the second pixel 20 remain at the bottom of the second electrophoretic cell 21. In order to further ensure that the color-developing particles in each second electrophoretic cell of the second pixel remain at the bottom of the second electrophoretic cell, when the second pixel is in the preparation writing mode, the corresponding third electrode of each second electrophoretic cell in the second pixel is configured to receive a third positive current signal, and the corresponding fourth electrode of each second electrophoretic cell in the second pixel is configured to receive the third positive current signal. The third positive current signal is smaller than the first positive current signal, as shown in FIG. 5(d). At this time, the third electrode 32 and the fourth electrode 33 are weakly positively charged (+). The white particles in FIG. 5(d) represent the color-developing particles. Since the color-developing particles are weakly negatively charged, the third electrode 32 and the fourth electrode 33 have a weak attractive force on the color-developing particles in the second electrophoretic cell 21, which ensures that the position of the color-developing particles in the second electrophoretic cell 21 does not change. The color-developing particles in each second electrophoretic cell 21 of the second pixel 20 remain at the left and right positions at the bottom of the second electrophoretic cell 21, which further ensures that the color-developing particles in each second electrophoretic cell 21 of the second pixel 20 remain at the bottom of the second electrophoretic cell 21. In order to further ensure that the second pixel does not display the writing note information, when the second pixel is in the writing mode, the movable rubbing part of the flexible transparent rubbing electronics transistor corresponding to the second pixel is configured to move a first displacement value. That is, the user drives the movable rubbing part of the flexible transparent rubbing electronics transistor to move the first displacement value, so that the output end of the flexible transparent rubbing electronics transistor outputs a first positive current signal to the first electrode. As shown in FIG. 5(e), at this time, the first electrode 30 is strongly positively charged (++), the second electrode 31 is weakly negatively charged (-), the third electrode 32 and the fourth electrode 33 are weakly positively charged (+), and the white particles in FIG. 5(e) represent the color-developing particles. At this time, the black particles in each second electrophoretic cell 21 continue to remain at the bottom of the second electrophoretic cell 21. The color-developing particles in each second electrophoretic cell 21 of the second pixel 20 break away from the attractive force of the third electrode 32 and the fourth electrode 33 and are attracted to the top of the second electrophoretic cell 21 by the first electrode 30, thereby displaying the writing note information.

[0075] In an alternative embodiment, when the second pixel is in the non-writing non-touch mode, the corresponding third electrode of each second electrophoretic cell in the second pixel is configured to receive a zero current signal, and the corresponding fourth electrode of each second electrophoretic cell in the second pixel is configured to receive the zero current signal.

[0076] In the embodiment, when the second pixel is in the non-writing non-touch mode, the input end of the flexible transparent tribological electronic transistor corresponding to the second pixel is used for receiving the first negative current signal, the output end of the flexible transparent tribological electronic transistor outputs the second negative current signal to the first electrode corresponding to the second pixel, the second electrode corresponding to the second pixel is used for receiving the first positive current signal, the third electrode corresponding to each second electrophoretic cell in the second pixel is used for receiving the zero current signal, and the fourth electrode corresponding to each second electrophoretic cell in the second pixel is used for receiving the zero current signal, as shown in FIG. 5(f), at this time, the first electrode 30 has a medium negative charge (--) and the second electrode 31 has a medium positive charge (++), the third electrode 32 and the fourth electrode 33 are not charged, the white particles in FIG. 5(f) represent color developing particles, the black particles in each second electrophoretic cell 21 in the second pixel 20 are attracted by the first electrode 30 and move to the top of the second electrophoretic cell 21, and the color developing particles in each second electrophoretic cell 21 in the second pixel 20 are attracted by the second electrode 31 and move to the bottom of the second electrophoretic cell 21.

[0077] In an alternative embodiment, when the second pixel is in the preparation touch mode, the third electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the third positive current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the third positive current signal.

[0078] Specifically, when the second pixel is in the preparation touch mode, the input end of the flexible transparent tribological electronic transistor corresponding to the second pixel is used for receiving the first negative current signal, the output end of the flexible transparent tribological electronic transistor outputs the second negative current signal to the first electrode corresponding to the second pixel, and the second electrode corresponding to the second pixel is used for receiving the first positive current signal. The difference between the second pixel in the preparation touch mode and the second pixel in the non-writing non-touch mode is that, when the second pixel is in the preparation touch mode, the third electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the third positive current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the third positive current signal, and when the second pixel is in the non-writing non-touch mode, the third electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the zero current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used for receiving the zero current signal.

[0079] Specifically, when the second pixel is in the ready touch mode, the input end of the flexible transparent tribological transistor corresponding to the second pixel is used to receive the first negative current signal, the output end of the flexible transparent tribological transistor is used to output the second negative current signal to the first electrode corresponding to the second pixel, the second electrode corresponding to the second pixel is used to receive the first positive current signal, the third electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal. As shown in FIG. 6(a), at this time, the first electrode 30 has a medium negative charge (--), the second electrode 31 has a medium positive charge (++), the third electrode 32 and the fourth electrode 33 both have a weak positive charge (+), and the white particles in FIG. 6(a) represent color-developing particles. Since the color-developing particles have a weak negative charge and are large in mass and slow in movement, the repulsion of the second electrode 31 to the color-developing particles is small, and the third electrode 32 and the fourth electrode 33 have a weak attraction to the color-developing particles in the second electrophoretic cell 21. Compared with the second pixel in the non-writing and non-touch mode, the position of the color-developing particles in the second electrophoretic cell 21 does not change, and the color-developing particles in each second electrophoretic cell 21 in the second pixel 20 remain at the bottom of the second electrophoretic cell 21, thereby ensuring that the second pixel does not display the writing note information.

[0080] In an optional embodiment, when the second pixel is in the touch mode, the tribologically movable part of the flexible transparent tribological transistor corresponding to the second pixel is used to move by the second displacement value, so that the output end of the flexible transparent tribological transistor outputs the third negative current signal to the first electrode, and the third negative current signal is greater than the second negative current signal.

[0081] Specifically, when the second pixel is in the touch mode, the input end of the flexible transparent tribological transistor corresponding to the second pixel is used to receive the first negative current signal, the second electrode corresponding to the second pixel is used to receive the first positive current signal, the third electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal, and the fourth electrode corresponding to each second electrophoretic cell of the second pixel is used to receive the third positive current signal. The difference between the second pixel in the touch mode and the second pixel in the ready touch mode is that, when the second pixel is in the touch mode, the tribologically movable part of the flexible transparent tribological transistor corresponding to the second pixel is used to move by the second displacement value, and when the second pixel is in the ready touch mode, the tribologically movable part of the flexible transparent tribological transistor corresponding to the second pixel does not move.

[0082] Specifically, the fingers of the user move on the side of the flexible encapsulation layer away from the induction rubbing layer, and an external force is applied to the movable rubbing part of the flexible transparent rubbing transistor through the flexible encapsulation layer, so that the movable rubbing part of the flexible transparent rubbing transistor moves.

[0083] In the embodiment, when the second pixel is in the touch mode and the user performs touch, the movable rubbing part of the flexible transparent rubbing transistor corresponding to the second pixel is used to move by the second displacement value, so that the output end of the flexible transparent rubbing transistor outputs a third negative current signal to the first electrode, and the second electrode corresponding to the second pixel is used to receive the first positive current signal, as shown in FIG. 6(b). At this time, the first electrode 30 has strong negative electricity (---), the second electrode 31 has medium strong positive electricity (++), the third electrode 32 and the fourth electrode 33 all have weak positive electricity (+), the white particles in FIG. 6(b) represent color developing particles, the first electrode 30 has strong negative electricity (---), and compared with the case where the second pixel is in the preparation touch mode, the position of the black particles does not change, the black particles in the second electrophoretic unit 21 in the second pixel 20 are kept at the top of the second electrophoretic unit 21, so that the second pixel does not display the writing note information. However, compared with the case where the second pixel is in the preparation touch mode, in the case where the second pixel is in the touch mode, the negative of the current signal in the first electrode is enhanced, and therefore, if the absolute value of the current signal of the first electrode is greater than the absolute value of the second negative current signal, it can be determined that the second pixel is touched, so that the touch positioning of the electronic paper display panel is realized.

[0084] Figure 7 The touch positioning method of the electronic paper display panel provided in the embodiment of the application, the electronic paper display panel is divided into a plurality of regions, the plurality of regions correspond to the plurality of second pixels one by one, the second pixels are located in the corresponding regions, as shown in Figure 7 The method comprises the following steps:

[0085] In step S101, the current signals in the first electrodes corresponding to the plurality of second pixels are obtained.

[0086] In step S102, a touch region is determined according to the current signals in the first electrodes corresponding to the plurality of second pixels, the touch region is composed of at least one second pixel, the absolute values of the current signals in the first electrodes corresponding to the second pixels in the touch region are all greater than the absolute value of a second negative current signal, and the second negative current signal is the current signal in the first electrode corresponding to the second pixel when the second pixel is in the preparation touch mode.

[0087] Specifically, the actual position of the touch of the fingers of the user should be the part in the touch region on the side of the flexible encapsulation layer away from the induction rubbing layer.

[0088] Through the above embodiment, the second pixel is in the preparation touch mode, the current signal in the first electrode is the second negative current signal, compared to the second pixel being in the preparation touch mode, the negative of the current signal in the first electrode is enhanced when the second pixel is in the touch mode, therefore, if the absolute value of the current signal of the first electrode is greater than the absolute value of the second negative current signal, it can be determined that the second pixel is touched, thereby realizing touch positioning of the electronic paper display panel.

[0089] The display device provided in the embodiment of the present application comprises:

[0090] The electronic paper display panel of any of the above;

[0091] The driving substrate is connected to the first electrodes, the second electrodes, the third electrodes, the fourth electrodes and the input ends of the flexible transparent tribological electronic transistors in the display panel through the first, second, third, fourth and fifth wires respectively.

[0092] Specifically, the driving substrate provides the current signals to the first electrodes, the second electrodes, the third electrodes, the fourth electrodes and the input ends of the flexible transparent tribological electronic transistors in the electronic paper display panel.

[0093] Through the above embodiment, the pixel layer of the electronic paper display panel is divided into first pixels and second pixels, the first pixels are used for displaying image information alone, and the second pixels are used for displaying writing note information alone, without interfering with each other, thereby solving the problem that the image information originally displayed by a single pixel is covered by the writing note information when the single pixel is used for displaying the writing note information in the prior art.

[0094] The beneficial effects of the present application are:

[0095] 1) The image information and the writing note information are independent of each other: the pixel layer of the electronic paper display panel is divided into first pixels and second pixels in the present application, the first pixels are used for displaying image information alone, and the second pixels are used for displaying writing note information alone, without interfering with each other, thereby solving the problem that the image information originally displayed by a single pixel is covered by the writing note information when the single pixel is used for displaying the writing note information in the prior art.

[0096] 2) The structure of the electronic paper display panel is simplified, and the cost and power consumption of the electronic paper display panel are significantly reduced: the electronic paper display panel in the prior art is positioned by touch technology, and then the pixels of the touch area are controlled to display the writing note information, but the present application does not need to position the touch area, when the finger of the user drives the movable rubbing part of the flexible transparent rubbing electronics transistor to move by a first displacement value, the output end of the flexible transparent rubbing electronics transistor outputs a first positive current signal to the first electrode, so that the first electrode has a medium strong positive electricity, and the color-developing particles in each second electrophoretic cell in the second pixel are attracted to the top of the second electrophoretic cell by the first electrode, so as to display the writing note information, thereby simplifying the structure of the electronic paper display panel, significantly reducing the cost and power consumption of the electronic paper display panel, and being especially suitable for a flexible electronic paper display device.

[0097] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0098] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless otherwise specifically identified as an order dependency. It is also to be understood that additional or alternative steps can be employed.

[0099] The above description is merely illustrative of the application and is not to be construed as limiting the application. Various modifications and changes can be made by those skilled in the art which fall within the scope of the present application as defined by the appended claims. Accordingly, the scope of the application is to be interpreted only as is fairly supported by the claims.

Claims

1. An electronic paper display panel, characterized in that, The electronic paper display panel includes: A pixel layer, comprising a plurality of first pixels and a plurality of second pixels, wherein each first pixel is composed of at least one first electrophoretic unit, the first electrophoretic unit in the first pixel being used to display image information, and each second pixel is composed of at least one second electrophoretic unit, the second electrophoretic unit in the second pixel being used to display handwritten note information; The second electrophoresis unit includes negatively charged color particles and positively charged black particles, wherein the mass of the color particles is greater than the mass of the black particles, and the charge of the color particles is less than the charge of the black particles. The electronic paper display panel further includes: A first electrode layer, comprising: a plurality of first electrodes, each first electrode corresponding to a second pixel, wherein the first electrode is disposed directly above the top of the second electrophoretic unit in the corresponding second pixel; The second electrode layer includes a plurality of second electrodes, each of which corresponds to a second pixel, and the second electrode is disposed directly below the bottom of the second electrophoretic unit in the corresponding second pixel. The inductive friction layer includes a plurality of flexible transparent triboelectric transistors, each of which corresponds to a first electrode and is located directly above the corresponding first electrode. The output terminal of each flexible transparent triboelectric transistor is connected to the first electrode corresponding to that transistor.

2. The electronic paper display panel according to claim 1, characterized in that, The second pixel is positioned between two adjacent first pixels in a row of first pixels, and / or the second pixel is positioned between two adjacent first pixels in a column of first pixels.

3. The electronic paper display panel according to claim 1, characterized in that, in, When the second pixel is in a non-writing, non-touch mode, the input terminal of the flexible light-transmitting triboelectric transistor corresponding to the second pixel is used to receive a first negative current signal, so that the output terminal of the flexible light-transmitting triboelectric transistor outputs a second negative current signal to the first electrode corresponding to the second pixel. The second electrode corresponding to the second pixel is used to receive a first positive current signal to drive the black particles in each second electrophoretic unit in the second pixel to move to the top of the second electrophoretic unit and drive the color particles in each second electrophoretic unit in the second pixel to move to the bottom of the second electrophoretic unit.

4. The electronic paper display panel according to claim 3, characterized in that, When the second pixel is in the writing preparation mode, the input terminal of the flexible light-transmitting triboelectric transistor corresponding to the second pixel is used to receive a second positive current signal, and the movable friction part of the flexible light-transmitting triboelectric transistor corresponding to the second electrophoresis unit is not moved, so that the output terminal of the flexible light-transmitting triboelectric transistor outputs a zero current signal to the first electrode corresponding to the second pixel, and the second electrode corresponding to the second pixel is used to receive a third negative current signal to drive the black particles in each second electrophoresis unit in the second pixel to move to the bottom of the second electrophoresis unit, and keep the color particles in each second electrophoresis unit in the second pixel at the bottom of the second electrophoresis unit. The absolute value of the third negative current signal is less than the absolute value of the second negative current signal. When the second pixel is in writing mode, the movable friction part of the flexible light-transmitting triboelectric transistor corresponding to the second pixel is used to move a first displacement value, so that the output terminal of the flexible light-transmitting triboelectric transistor outputs the first positive current signal to the first electrode, thereby driving the color particles in each second electrophoretic unit in the second pixel to move to the top of the second electrophoretic unit.

5. The electronic paper display panel according to claim 4, characterized in that, The pixel layer also includes: Multiple third electrodes and multiple fourth electrodes are provided. Each third electrode corresponds to a second electrophoresis unit and is disposed on the outer side of the first segment of the first sidewall of the corresponding second electrophoresis unit. Each fourth electrode corresponds to a second electrophoresis unit and is disposed on the outer side of the second segment of the second sidewall of the corresponding second electrophoresis unit. Both the first segment and the second segment are close to the bottom of the second electrophoresis unit. In the context of a second pixel being in the writing preparation mode, the third electrode corresponding to each second electrophoretic unit in the second pixel is used to receive a third positive current signal, and the fourth electrode corresponding to each second electrophoretic unit in the second pixel is used to receive the third positive current signal, so as to drive the color-developing particles in each second electrophoretic unit in the second pixel to move to the first segment of the first sidewall of the second electrophoretic unit and the second segment of the second sidewall of the second electrophoretic unit, wherein the third positive current signal is less than the first positive current signal.

6. The electronic paper display panel according to claim 5, characterized in that, When the second pixel is in the non-writing and non-touch mode, the third electrode corresponding to each second electrophoretic unit in the second pixel is used to receive a zero-current signal, and the fourth electrode corresponding to each second electrophoretic unit in the second pixel is used to receive the zero-current signal.

7. The electronic paper display panel according to claim 6, characterized in that, When the second pixel is in touch mode, the rubble-movable part of the flexible light-transmitting triboelectric transistor corresponding to the second pixel is used to move a second displacement value, so that the output terminal of the flexible light-transmitting triboelectric transistor outputs a third negative current signal to the first electrode, and the absolute value of the third negative current signal is greater than the absolute value of the second negative current signal.

8. The electronic paper display panel according to claim 7, characterized in that, When the second pixel is in the ready-to-touch mode, the third electrode corresponding to each second electrophoretic unit of the second pixel is used to receive the third positive current signal, and the fourth electrode corresponding to each second electrophoretic unit of the second pixel is used to receive the third positive current signal.

9. A touch positioning method for an electronic paper display panel, characterized in that, The method, applied to an electronic paper display panel according to any one of claims 1-8, wherein the electronic paper display panel is divided into multiple regions, each of the multiple regions corresponds to a plurality of second pixels, and the second pixels are located in the corresponding regions, includes: Acquire the current signal in the first electrode corresponding to the plurality of second pixels; A touch area is determined based on the current signals of the first electrodes corresponding to the plurality of second pixels. The touch area is composed of at least one area corresponding to a second pixel. The absolute value of the current signal of the first electrode corresponding to the second pixel in the touch area is greater than the absolute value of the second negative current signal. The second negative current signal is the current signal in the first electrode corresponding to the second pixel when the second pixel is in the ready touch mode.

10. A display device, characterized in that, The display device includes: The electronic paper display panel according to any one of claims 1 to 8; The driving substrate is connected to multiple first electrodes in the display panel via multiple first traces, multiple second traces, multiple third traces, multiple fourth traces, and multiple fifth traces to the input terminals of multiple flexible light-transmitting triboelectric transistors in the display panel.

Images