Electronic paper system

Abstract

An electronic paper system, comprising: at least one dot matrix electronic paper (1) and at least one segmented electronic paper (2). The dot matrix electronic paper (1) comprises a second electrode layer, a first display layer (12) and a first electrode layer (13) which are sequentially stacked; the first electrode layer (13) comprises a first electrode, the dot matrix electronic paper (1) further comprises a driving module (10), and a first common pin (A1) of the driving module (10) is connected to the first electrode and is configured to output a first common voltage to the first electrode. The segmented electronic paper (2) comprises a fourth electrode layer, a second display layer, and a third electrode layer; the third electrode layer comprises a third electrode, the fourth electrode layer comprises a fourth electrode (21), a second common pin (A2) of the driving module (10) is connected to the third electrode and is configured to output a second common voltage to the third electrode, and a driving pin (A3) of the driving module (10) is connected to the fourth electrode (21) and is configured to output a driving voltage to the fourth electrode (21).

Description

Electronic paper system

[0001] The present application claims priority to the Chinese patent application No. 202422265128.2, filed on September 14, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic paper, for example, to an electronic paper system. BACKGROUND

[0003] The display screen of electronic paper is a display screen made of electrophoretic display technology. By applying voltage to a plurality of pixel electrodes through a control circuit on an array layer, movement of color electrophoretic particles in an electronic paper film is driven to realize image display. As a reflective display screen, the electronic paper display screen can maintain for a long time without continuous refreshing after image update, so the power consumption is very low. Due to low power consumption, wide viewing angle, high contrast, eye protection and many other characteristics, the electronic paper display screen is increasingly widely used in many fields such as electronic price tags, electronic books, billboards, etc.

[0004] Electronic paper can be divided into dot matrix electronic paper and segment code electronic paper according to different driving modes. Dot matrix electronic paper is driven by a dot matrix driving chip, and segment code electronic paper is driven by a segment code driving chip. In order to ensure the normal operation of the driving chip, external power supply, communication, voltage stabilization, control and other supporting circuits need to be set for the dot matrix driving chip and the segment code driving chip. Therefore, for a double-screen system composed of dot matrix electronic paper and segment code electronic paper, dot matrix driving chips and segment code driving chips and their respective supporting circuits need to be set for the display screens of the two pieces of electronic paper. The existing separate driving mode has a complex circuit structure and high cost. SUMMARY

[0005] The present application provides an electronic paper system to solve the problem of complex structure and high cost of the existing double-screen system.

[0006] The present application provides an electronic paper system, comprising: at least one dot matrix electronic paper and at least one segment code electronic paper.

[0007] The dot matrix electronic paper comprises a second electrode layer, a first display layer and a first electrode layer which are sequentially stacked; the first electrode layer comprises a first electrode, and the dot matrix electronic paper further comprises a driving module, a first common pin of the driving module being connected with the first electrode for outputting a first common voltage to the first electrode.

[0008] The segment code electronic paper comprises a fourth electrode layer, a second display layer and a third electrode layer which are sequentially stacked; the third electrode layer comprises a third electrode, the fourth electrode layer comprises a fourth electrode, a second common pin of the driving module is connected with the third electrode, for outputting a second common voltage to the third electrode, and a driving pin of the driving module is connected with the fourth electrode, for outputting a driving voltage to the fourth electrode. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 is a plan structure schematic diagram of an electronic paper system provided by an embodiment of the present application;

[0010] Fig. 2 is a plan structure schematic diagram of segment code electronic paper in an electronic paper system provided by an embodiment of the present application;

[0011] Fig. 3 is a structure schematic diagram of a cross-sectional structure of dot matrix electronic paper in an electronic paper system provided by an embodiment of the present application;

[0012] Fig. 4 is a cross-sectional structure schematic diagram of dot matrix electronic paper in an electronic paper system provided by an embodiment of the present application;

[0013] Fig. 5 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0014] Fig. 6 is a plan structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0015] Fig. 7 is a plan structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0016] Fig. 8 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0017] Fig. 9 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0018] Fig. 10 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0019] Fig. 11 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0020] Fig. 12 is a plan structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0021] Fig. 13 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application;

[0022] Fig. 14 is a plan structure schematic diagram of another electronic paper system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] With reference to the drawings and the embodiments disclosed herein, it will be understood that the application is not limited in its application to the details of the embodiments set forth and herein described and / or illustrated. The application is capable of other embodiments and of being practiced or carried out in various ways. Variations of the embodiments described herein will occur to persons of the art. Furthermore, the terminology and phraseology

[0024] It is to be noted that the terms "first", "second", and the like, used in the description and the claims of the present application as well as the above description of the drawings merely denote different instances of similar objects and do not necessarily imply a specific order or chronology. It is to be understood that the data thus designated can be interchanged, where appropriate, so that the embodiments of the present application described herein can be carried out in other than the order shown or described herein. Furthermore, the terms "comprise" and "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are clearly recited, but can include other not clearly recited steps or units that are inherent to such process, method, product or apparatus.

[0025] Fig. 1 is a plan view of an electronic paper system according to an embodiment of the present application, Fig. 2 is a plan view of a segment code electronic paper in an electronic paper system according to an embodiment of the present application, and Fig. 3 is a sectional view of a dot matrix electronic paper in an electronic paper system according to an embodiment of the present application. Referring to Figs. 1-3, the electronic paper system comprises at least one dot matrix electronic paper 1 and at least one segment code electronic paper 2. The at least one segment code electronic paper 2 can be a one-segment segment code electronic paper 2.

[0026] The dot matrix electronic paper 1 comprises a main display area AA and a frame display area AB surrounding the main display area AA. The dot matrix electronic paper 1 further comprises a second electrode layer, a first display layer 12 and a first electrode layer 13 which are sequentially stacked. The first electrode layer 13 comprises a first electrode. In the frame display area AB, the second electrode layer comprises a second electrode 111. The dot matrix electronic paper 1 further comprises a driving module 10. A first common pin A1 of the driving module 10 is connected to the first electrode and configured to output a first common voltage to the first electrode.

[0027] The segment code electronic paper 2 comprises a fourth electrode layer, a second display layer and a third electrode layer which are sequentially stacked. The third electrode layer comprises a third electrode. The fourth electrode layer comprises a fourth electrode 21. A second common pin A2 of the driving module 10 is connected to the third electrode and configured to output a second common voltage to the third electrode. A driving pin A3 of the driving module 10 is connected to the fourth electrode 21 and configured to output a driving voltage to the fourth electrode 21.

[0028] The display area AA of the dot matrix electronic paper 1 can be rectangular for main display, and a frame display area AB of the dot matrix electronic paper 1 is arranged around the display area AA, the frame display area AB is a fault tolerance area arranged when the dot matrix electronic paper 1 is subsequently packaged, and the inner edge of the vertical projection of the subsequently arranged packaging structure can be located within the vertical projection of the frame display area AB, thereby avoiding shielding the display area AA.

[0029] The second electrode 111 is an integral structure, which can be any one of a closed ring, an L shape, a U shape, a C shape, an I shape, and a broken ring. The fourth electrode 21 has a shape of any one of a closed ring, an L shape, a U shape, a C shape, an I shape, and a broken ring. The driving module 10 outputs a first common voltage to the first electrode through a first common pin A1 and outputs a driving voltage to the second electrode 111 through a driving pin A3. The electronic ink in the first display layer 12 located in the frame display area AB moves under the action of the electric field between the first electrode and the second electrode 111, thereby realizing picture display. According to design requirements, it can be determined whether the driving pin A3 of the driving module 10 is connected to the second electrode 111. If the frame display area AB needs to display, the driving pin A3 of the driving module 10 is connected to the second electrode 111. If the frame display area AB does not need to display, the driving pin A3 of the driving module 10 is not connected to the second electrode 111.

[0030] In addition, for the dot matrix electronic paper 1, the second electrode layer further includes a plurality of pixel electrodes insulated from each other at positions corresponding to the display area AA. The pixel electrodes are configured to constitute a pixel array of the display area AA. The driving module 10 is further configured to output a pixel voltage to a pixel driving circuit connected to the pixel electrodes, so that the first display layer 12 located in the display area AA is driven by the first electrode and the pixel electrodes to realize display, thereby displaying an effective picture.

[0031] The driving module 10 outputs a second common voltage to the third electrode through a second common pin A2, wherein the second common voltage is different from the first common voltage, and the potential of the second common voltage can be a ground potential, i.e., 0V. The driving module 10 outputs a driving voltage to the fourth electrode 21 through the driving pin A3. The electrophoretic particles in the second display layer move under the action of the electric field generated by the third electrode and the fourth electrode 21, thereby realizing the display of the segment code electronic paper 2.

[0032] The electronic paper system in the embodiments of the present application comprises at least one dot matrix electronic paper and at least one segment code electronic paper, the fourth electrode of the segment code electronic paper is connected with a driving pin of a driving module of the dot matrix electronic paper, and the driving module is configured to output a driving voltage to the fourth electrode to drive the segment code electronic paper to display. When the frame display area of the dot matrix electronic paper needs to be lighted, the driving pin can be used to output a driving voltage to the second electrode to drive the frame display area to display. The driving module of the dot matrix electronic paper is multiplexed as the driving module of the segment code electronic paper, the driving module of the dot matrix electronic paper can simultaneously provide driving voltages to the dot matrix electronic paper and the segment code electronic paper, and there is no need to additionally set the driving module of the segment code electronic paper, thereby simplifying the circuit structure of the electronic paper system and reducing the cost.

[0033] FIG. 4 is a cross-sectional structure diagram of a dot matrix electronic paper in an electronic paper system provided by an embodiment of the present application. Referring to FIGS. 1-4, the dot matrix electronic paper 1 includes, in sequence from top to bottom, a driving layer 3, a front plane laminate (FPL) 4, and a packaging layer 5. The driving layer 3 includes, in sequence from top to bottom, a substrate 31 and an array layer 32. The array layer 32 includes a multi-layer structure, which includes a second electrode layer and a pixel driving circuit layer. The second electrode layer is a film layer structure closest to the first display layer 12 in the array layer 32. The pixel driving circuit layer includes a pixel driving circuit configured to drive a pixel array. The FPL 4 includes, in sequence from top to bottom, an adhesive layer 41, a sealing layer 42, the first display layer 12, the first electrode layer 13, a protective film layer 43, and an optical adhesive layer 44. The adhesive layer 41 is configured to adhere to the substrate 31. The protective film layer 43 is configured to deposit the first electrode layer 13. The optical adhesive layer 44 is configured to adhere to the packaging layer 5. The vertical projections of the FPL 4 and the packaging layer 5 on the substrate 31 are both located within the vertical projection of the array layer 32 on the substrate 31. The areas of the vertical projections of the FPL 4 and the packaging layer 5 on the substrate 31 are both smaller than the area of the vertical projection of the array layer 32 on the substrate 31. The packaging layer 5 covers the FPL 4, and the area of the vertical projection of the packaging layer 5 is greater than the area of the vertical projection of the FPL 4 to wrap the FPL 4 and protect the FPL 4 and isolate moisture. The dot matrix electronic paper 1 further includes an edge sealing adhesive 14 and a silicone adhesive 15. The edge sealing adhesive 14 is applied to the edges of the packaging layer 5 and is configured to fill the gaps between the packaging layer 5 and the array layer 32 to further isolate moisture. The silicone adhesive 15 is disposed in the lower frame area of the array layer 32 to protect the wiring on the array layer 32. As shown in FIG. 2, the innermost rectangular area is a display area AA of the dot matrix electronic paper 1, i.e., an effective display area. The annular area outside the display area AA with a certain width is a frame display area AB, which is configured to distinguish the display area AA from a non-display area. The FPL 4 is attached to the array layer 32 and covers the display area AA and the frame display area AB. An ear hole is provided on the FPL 4. A first Ag adhesive point 16 is disposed on the ear hole. A first common electrode is provided on the second electrode layer of the array layer 32 at a position corresponding to the first Ag adhesive point 16. A hole is punched on the FPL 4 at a position corresponding to the first Ag adhesive point 16 to expose an electrode on the FPL 4. Thus, the first common electrode and the electrode on the FPL 4 can be connected through the first Ag adhesive point 16, and the driving module can be connected to the electrode on the FPL 4 through the first common electrode on the array layer. The electrode on the FPL 4 is referred to as a first electrode hereinafter. The packaging layer 5 is attached to the FPL 4 and covers the FPL 4 to ensure that the packaging layer 5 can completely cover the FPL 4 in the case of process deviation.

[0034] The segment code electronic paper also includes a driving layer, a front plane laminate (FPL, hereinafter referred to as FPL), an encapsulation layer, an edge sealing glue and a silica gel, and the structures of the driving layer, the front plane laminate and the encapsulation layer are similar to those of the dot matrix electronic paper, which will not be described here again. The planar structure diagram of the segment code electronic paper is shown in FIG. 1, and the segment code electronic paper includes a second Ag glue point 17, which will not be described here again.

[0035] FIG. 5 is a cross-sectional structure diagram of another electronic paper system provided by an embodiment of the present application, and FIG. 6 is a planar structure diagram of another electronic paper system provided by an embodiment of the present application. As shown in FIGS. 5-6, the driving module includes a driving chip 101, a first flexible circuit board 102 and a printed circuit board 103.

[0036] The second electrode layer includes a first common electrode;

[0037] The first common electrode is connected with the first electrode and a first end of the driving chip 101 respectively; the driving chip 101 is configured to generate a first common voltage according to a first voltage output by the printed circuit board 103 and output the first common voltage through the first end B1 of the driving chip 101.

[0038] A second end B2 of the driving chip 101 is connected with a first end C1 of the first flexible circuit board 102, and a second end C2 of the first flexible circuit board 102 is connected with a first end of the printed circuit board 103; the first end C1 of the first flexible circuit board 102 and the second end C2 of the first flexible circuit board 102 are connected; the driving chip 101 is configured to generate a driving voltage according to a second voltage output by the printed circuit board 103 and output the driving voltage through the second end B2 of the driving chip 101. In this embodiment, it is exemplarily shown that the second end of the driving chip 101 is also electrically connected with the second electrode 111. As shown in FIG. 6, the vertical projection of the second end C2 of the first flexible circuit board 102 overlaps with the vertical projection of the first end of the printed circuit board 103.

[0039] The first Ag glue point 16 is punched between the first common electrode and the first electrode and filled in the hole. After the driving chip 101 outputs the first common voltage to the first common electrode, the first common electrode transmits the first common voltage to the first electrode through the first Ag glue point 16, and finally the driving chip 101 applies the first common voltage to the first electrode. In FIG. 6, the connection between the driving chip 101 and the first Ag glue point 16 refers to the connection between the first common electrode at the corresponding position of the driving chip 101 and the first Ag glue point 16, rather than the direct connection between the driving chip 101 and the first Ag glue point 16. The printed circuit board (PCB) 103 integrates various functional devices, such as a power supply configured to output an initial voltage. The printed circuit board 103 generates the first voltage and the second voltage by different degrees of voltage reduction after the initial voltage output by the power supply, and outputs them to the driving chip 101. The driving chip 101 is configured to generate the first common voltage by voltage boosting the first voltage and output it through the first end B1 of the driving chip 101. The driving chip 101 is also configured to generate the driving voltage by voltage boosting the second voltage and output it through the second end B2 of the driving chip 101.

[0040] The first end of the printed circuit board 103 is connected with the fourth electrode 21, and the ground end G1 of the printed circuit board 103 is connected with the third electrode. The ground end G1 of the printed circuit board 103 is configured to output the second common voltage. The ground end G1 of the printed circuit board 103 is grounded, so the second common voltage output by the ground end G1 of the printed circuit board 103 is equal to 0V. In the embodiment shown in FIG. 6, the segment code electronic paper further comprises a second flexible circuit board 201, and the fourth electrode layer further comprises a second common electrode. The second common electrode is insulated from the fourth electrode 21, and is connected with the third electrode and the first end D1 of the second flexible circuit board 201 respectively. The second end D2 of the second flexible circuit board 201 is connected with the second end of the printed circuit board 103, wherein the vertical projection of the second end D2 of the second flexible circuit board 201 overlaps the vertical projection of the second end of the printed circuit board 103. The second end of the printed circuit board 103 is connected with the ground end G1 of the printed circuit board 103; the first end D1 of the second flexible circuit board 201 and the second end D2 of the second flexible circuit board 201 are connected. The third end D3 of the second flexible circuit board 201 is connected with the fourth electrode 21, and the fourth end D4 of the second flexible circuit board 201 is connected with the third end of the printed circuit board 103, wherein the vertical projection of the fourth end D4 of the second flexible circuit board 201 overlaps the vertical projection of the third end of the printed circuit board 103; the third end D3 of the second flexible circuit board 201 and the fourth end D4 of the second flexible circuit board 201 are connected, and the first end of the printed circuit board 103 and the third end of the printed circuit board 103 are connected.

[0041] Similar to the connection mode of the first common electrode and the first electrode in the dot matrix electronic paper, the segment code electronic paper includes a second Ag glue point 17, a second common electrode is arranged at a position corresponding to the second Ag glue point 17, the second common electrode is connected with the second Ag glue point 17, the second Ag glue point 17 is connected with the third electrode in a punching manner, and then the connection between the second common electrode and the third electrode is realized through the second Ag glue point 17. The second common voltage output by the printed circuit board 103 is applied to the second common electrode through the second flexible circuit board 201, and the second common electrode applies the second common voltage to the third electrode through the second Ag glue point 17. In FIG. 6, the connection between the second Ag glue point 17 and the second flexible circuit board 201 refers to the connection between the first end D1 of the second flexible circuit board 201 and the second common electrode at a position corresponding to the second Ag glue point 17.

[0042] The driving pin of the driving module is also connected with the second electrode 111 and is configured to output a driving voltage to the second electrode 111.

[0043] In the embodiment, the first end B1 of the driving chip 101 is used as the first common pin of the driving module, the ground end G1 of the printed circuit board 103 is used as the second common pin of the driving module, and the second end B2 of the driving chip 101 is used as the driving pin of the driving module. The driving chip 101 can further include a third end, which has the same function as the second end B2 of the driving chip 101 and is configured to output a driving voltage. The second end B2 and the third end of the driving chip 101 can be connected with opposite sides of the second electrode 111 along a first direction, so as to ensure the consistency of the driving voltages received by the opposite sides of the second electrode 111. The first direction is the row direction of the pixel array. In the embodiment, the first flexible circuit board 102 is overlapped with the driving chip 101 and the printed circuit board 103, and the second flexible circuit board 201 is overlapped with the printed circuit board 103, so that the driving voltage output by the second end B2 of the driving chip 101 is transmitted to the fourth electrode 21 of the segment code electronic paper through the first flexible circuit board 102, the printed circuit board 103 and the second flexible circuit board 201 at the same time, and the driving chip 101 of the dot matrix electronic paper drives the display of the dot matrix electronic paper and the segment code electronic paper at the same time. Therefore, it is not necessary to additionally set an external circuit for the segment code electronic paper, and the structure is simple and the cost is low.

[0044] FIG. 7 is a plan structure schematic diagram of another electronic paper system provided by the embodiment of the application. Referring to FIG. 7, the difference between the electronic paper system shown in FIG. 7 and that shown in FIG. 6 is that the dot matrix electronic paper does not set a frame display area, that is, does not set a second electrode, and the driving voltage output by the driving chip 101 is only applied to the fourth electrode 21 of the segment code electronic paper. In addition, the fourth electrode 21 in FIG. 7 is arranged in a disconnected ring structure.

[0045] FIG. 8 is a schematic diagram of a cross-sectional structure of another electronic paper system according to an embodiment of the present application. Referring to FIG. 8, the difference between FIG. 8 and the cross-sectional structure shown in FIG. 5 is that the fourth electrode layer is integrated on the second flexible circuit board 201, and the segment code electronic paper includes the substrate and the driving layer of the array layer, which are integrated on the second flexible circuit board 201, thereby facilitating the thinning of the electronic paper system.

[0046] FIG. 9 is a schematic diagram of a cross-sectional structure of another electronic paper system according to an embodiment of the present application. Referring to FIG. 4 and FIG. 9, the driving module includes the driving chip 101, the first flexible circuit board 102, and the printed circuit board 103; the second electrode layer includes the first common electrode; the first common electrode is connected with the first electrode and the first end of the driving chip 101, respectively; the driving chip 101 is configured to generate the first common voltage according to the first voltage output by the printed circuit board 103 and output the first common voltage through the first end of the driving chip 101; the second end of the driving chip 101 is connected with the first end of the first flexible circuit board 102, and the second end of the first flexible circuit board 102 is connected with the first end of the printed circuit board 103; the first end of the first flexible circuit board 102 and the second end of the first flexible circuit board 102 are connected; and the driving chip 101 is configured to generate the driving voltage according to the second voltage output by the printed circuit board 103 and output the driving voltage through the second end of the driving chip 101.

[0047] The segment code electronic paper further includes the first conductive member 202 and the second conductive member, the fourth electrode layer includes the second common electrode, the second common electrode is insulated from the fourth electrode, the second common electrode is connected with the third electrode and the first conductive member 202, respectively, the first conductive member 202 is further connected with the second end of the printed circuit board 103, and the second end of the printed circuit board 103 is connected with the ground end G1 of the printed circuit board 103; the second conductive member is connected with the fourth electrode and the third end of the printed circuit board 103, respectively, and the first end of the printed circuit board 103 and the third end of the printed circuit board 103 are connected.

[0048] Optionally, the first conductive member 202 and the second conductive member can be metal structures, such as metal springs, which have the conductive property. Similar to the foregoing embodiment, the second common electrode is arranged on the fourth electrode layer at the position corresponding to the second Ag glue dot 17 in the segment code electronic paper, the second common electrode is connected with the second Ag glue dot 17, and the third electrode is exposed by punching a hole on the FPL at the corresponding position. In this way, the third electrode is connected with the second common electrode through the second Ag glue dot 17. The second common electrode is connected with one end of the first conductive member 202 through punching, the other end of the first conductive member 202 is connected with the second end of the printed circuit board 103, and the second end of the printed circuit board 103 is connected with the ground end G1 of the printed circuit board 103. Finally, the third electrode is connected with the ground end of the printed circuit board 103 through the second common electrode and the first conductive member 202, and the printed circuit board 103 applies the second common voltage to the third electrode. One end of the second conductive member is connected with the fourth electrode through punching, and the other end is connected with the third end of the printed circuit board 103. The first end and the third end of the printed circuit board 103 are connected, and the first end of the printed circuit board 103 is connected with the second end B2 of the driving chip 101 through the first flexible circuit board 102. Finally, the fourth electrode is connected with the second end B2 of the driving chip 101 through the second conductive member, the printed circuit board 103 and the first flexible circuit board 102. The driving voltage output by the driving chip 101 is applied to the fourth electrode. The plan view in the embodiment can be similar to that in FIG. 6 or FIG. 7, and the difference is that the second flexible circuit board is replaced by the first conductive member 202 and the second conductive member. The first conductive member 202 and the second conductive member are insulated. In the embodiment, the first end B1 of the driving chip 101 is used as the first common pin of the driving module, the ground end G1 of the printed circuit board 103 is used as the second common pin of the driving module, and the second end B2 of the driving chip 101 is used as the driving pin of the driving module.

[0049] FIG. 10 is a cross-sectional structure schematic diagram of another electronic paper system provided by the embodiment of the application. Referring to FIG. 3 and FIG. 10, the driving module includes the first flexible circuit board 102 and the driving chip 101.

[0050] The second electrode layer includes the first common electrode, the first common electrode is connected with the first electrode and the first end of the driving chip 101 respectively; and the driving chip 101 is configured to generate the first common voltage according to the first voltage output by the first flexible circuit board 102 and output the first common voltage through the first end of the driving chip 101.

[0051] The second end of the driving chip 101 is connected with the first end of the first flexible circuit board 102; the driving chip is configured to generate a driving voltage according to a second voltage output by the first flexible circuit board 102 and output the driving voltage through the second end of the driving chip 101; in this embodiment, the second end of the driving chip 101 can be connected with the second electrode and configured to output the driving voltage to the second electrode.

[0052] The segment code electronic paper includes a second flexible circuit board 201;

[0053] The fourth electrode layer includes a second common electrode, the second common electrode is insulated from the fourth electrode, the second common electrode is connected with the third electrode and the first end of the second flexible circuit board 201 respectively, the first end of the second flexible circuit board 201 is connected with the second end of the second flexible circuit board 201, and the second end of the second flexible circuit board 201 is connected with the ground end of the first flexible circuit board 102; the ground end of the first flexible circuit board 102 is configured to output a second common voltage.

[0054] The fourth electrode is connected with the third end of the second flexible circuit board 201, and the fourth end of the second flexible circuit board 201 is connected with the second end of the first flexible circuit board 102; the third end of the second flexible circuit board 201 is connected with the fourth end of the second flexible circuit board 201, and the first end of the first flexible circuit board 102 is connected with the second end of the first flexible circuit board 102.

[0055] Similar to the foregoing scheme, the first common electrode is connected to the first electrode through the first Ag glue point 16, and the second common electrode is connected to the third electrode through the second Ag glue point 17. In this embodiment, the functional device such as the power supply for providing the initial voltage is integrated on the first flexible circuit board 102, the first flexible circuit board 102 generates the first voltage and the second voltage after the initial voltage output by the power supply is stepped down to different degrees, and outputs the first voltage and the second voltage to the driving chip 101, the driving chip 101 is configured to generate the first common voltage after stepping up the first voltage and output the first common voltage through the first end of the driving chip 101, and the driving chip 101 is configured to generate the driving voltage after stepping up the second voltage and output the driving voltage through the second end of the driving chip 101. When the frame display area needs to be displayed, the second electrode is connected to the second end of the driving chip 101, the driving chip 101 applies the driving voltage to the second electrode, and the electrophoretic particles in the first display layer located in the frame display area move under the electric field of the first electrode and the second electrode to realize picture display. At the same time, the third electrode in the segment code electronic paper is connected to the ground end of the first flexible circuit board 102 through the second flexible circuit board 201, the first flexible circuit board 102 applies the second common voltage to the third electrode, the fourth electrode is connected to the second end of the driving chip 101 through the second flexible circuit board 201 and the first flexible circuit board 102, and the driving chip 101 applies the driving voltage to the fourth electrode. The electrophoretic particles in the second display layer move under the electric field generated by the third electrode and the fourth electrode to realize display. In this embodiment, the first end of the driving chip 101 is used as the first common pin of the driving module, the ground end of the first flexible circuit board 102 is used as the second common pin of the driving module, and the second end of the driving chip 101 is used as the driving pin of the driving module. In this embodiment, the functional device is integrated on the first flexible circuit board 102, which can avoid the need for additional printed circuit boards, has a simple structure, saves costs, and is conducive to the thinning of the system.

[0056] FIG. 11 is a cross-sectional structure schematic diagram of another electronic paper system provided by an embodiment of the present application, and FIG. 12 is a plan structure schematic diagram of another electronic paper system provided by an embodiment of the present application. Referring to FIGS. 4, 11 and 12, optionally, the driving module includes a chip on film (COF) 104 and a driving chip 101.

[0057] The second electrode layer includes a first common electrode, the first common electrode is connected to the first electrode and a first end E1 of the chip on film 104, and the first end E1 of the chip on film 104 is connected to a first end B1 of the driving chip 101; the driving chip 101 is configured to generate the first common voltage according to the first voltage output by the chip on film 104 and output the first common voltage through the first end B1 of the driving chip 101.

[0058] The second end E2 of the chip-on-film circuit board 104 is connected with the second end B2 of the driving chip 101; the driving chip 101 is configured to generate a driving voltage according to the second voltage output by the chip-on-film circuit board 104 and output the driving voltage through the second end B2 of the driving chip 101; in the embodiment, the second end E2 of the chip-on-film circuit board 104 is connected with the second electrode 111 and is configured to apply the driving voltage to the second electrode 111.

[0059] The segment code electronic paper further comprises a second flexible circuit board 201, and the fourth electrode layer comprises a second common electrode;

[0060] The second common electrode is connected with the third electrode and the first end D1 of the second flexible circuit board 201 respectively, the second end D2 of the second flexible circuit board 201 is connected with the ground end G2 of the chip-on-film circuit board 104; the first end D1 of the second flexible circuit board 201 and the second end D2 of the second flexible circuit board 201 are connected; and the ground end G2 of the chip-on-film circuit board 104 is configured to output a second common voltage;

[0061] The fourth electrode 21 is connected with the third end D3 of the second flexible circuit board 201, and the fourth end D4 of the second flexible circuit board 201 is connected with the second end B2 of the driving chip 101; the third end D3 of the second flexible circuit board 201 and the fourth end D4 of the second flexible circuit board 201 are connected.

[0062] In the embodiment, the functional device is integrated on the chip-on-film 104, the chip-on-film 104 is integrated with a power supply, the chip-on-film 104 generates the first voltage and the second voltage by reducing the initial voltage output by the power supply by different degrees respectively, and outputs the first voltage and the second voltage to the driving chip 101; the driving chip 101 generates the first common voltage by boosting the first voltage and outputs the first common voltage through the first end B1 of the driving chip 101; the driving chip 101 is configured to generate the driving voltage B2 by boosting the second voltage and output the driving voltage B2 through the second end of the driving chip 101. Similarly to the foregoing scheme, the first common electrode is connected with the first electrode through the first Ag glue point 16, and the second common electrode is connected with the third electrode through the second Ag glue point 17. The first common voltage output by the driving chip 101 is applied to the first electrode in sequence through the chip-on-film circuit board 104, the first common electrode and the first Ag glue point 16.

[0063] The second common electrode is connected with the third electrode through the second Ag glue point 17, and the second common voltage output by the CCL 104 is applied to the third electrode in sequence through the second flexible circuit board 201, the second common electrode, and the second Ag glue point 17. The driving voltage output by the driving chip 101 is transmitted to the fourth electrode in sequence through the CCL 104 and the second flexible circuit board 201. The electrophoretic particles in the second display layer move under the action of the electric field generated by the third electrode and the fourth electrode 21, and display is realized. In this embodiment, the first end B1 of the driving chip 101 serves as the first common pin of the driving module, the ground end G2 of the CCL 104 serves as the second common pin of the driving module, and the second end B2 of the driving chip 101 serves as the driving pin of the driving module. Compared with the electronic paper system shown in FIG. 5, the driving module in this embodiment only includes the driving chip 101 and the CCL 104, and has a simple structure and a lower cost.

[0064] FIG. 13 is a cross-sectional structural schematic diagram of another electronic paper system provided by an embodiment of the present application, and FIG. 14 is a planar structural schematic diagram of another electronic paper system provided by an embodiment of the present application. The driving module includes the CCL 104 and the driving chip 101.

[0065] The second electrode layer includes a first common electrode, the first common electrode is connected with the first electrode and the first end E1 of the CCL 104 respectively, and the first end E1 of the CCL 104 is connected with the first end B1 of the driving chip 101. The driving chip 101 is configured to generate a first common voltage according to the first voltage output by the CCL 104 and output the first common voltage through the first end B1 of the driving chip 101.

[0066] The second end E2 of the CCL 104 is connected with the second end B2 of the driving chip 101, so that the second electrode 111 is connected with the second end E2 of the CCL 104 when the display area of the frame needs to be driven. The driving chip 101 is configured to generate a driving voltage according to the second voltage output by the CCL 104 and output the driving voltage through the second end B2 of the driving chip 101. In this embodiment, the second end E2 of the CCL 104 is connected with the second electrode 111, which is configured to apply the driving voltage to the second electrode 111.

[0067] The fourth electrode layer includes a second common electrode.

[0068] The second common electrode is connected with the third electrode and the third end E3 of the CCL 104 respectively, and the third end E3 of the CCL 104 is connected with the ground end G2 of the CCL 104. The ground end G2 of the CCL 104 is configured to output a second common voltage.

[0069] The fourth electrode 21 is connected with the fourth end E4 of the chip-on-film circuit board 104, and the fourth end of the chip-on-film circuit board 104 is connected with the second end B2 of the driving chip 101.

[0070] The difference between the electronic paper system of the embodiment and the electronic paper systems of FIGS. 11 and 12 is that the segment code electronic paper does not need to additionally set the second flexible circuit board, and the connection between the driving chip 101 and the fourth electrode is directly realized through the chip-on-film circuit board 104 of the driving module. In the embodiment, the first end B1 of the driving chip 101 is used as the first common pin of the driving module, the ground end G2 of the chip-on-film circuit board 104 is used as the second common pin of the driving module, and the second end B2 of the driving chip 101 is used as the driving pin of the driving module. Compared with the results of FIGS. 11 and 12, the embodiment does not need to additionally set the second flexible circuit board, and the structure is simpler and the cost is lower.

[0071] In the above-mentioned embodiments, when the second electrode layer includes a second electrode and the driving module is further configured to apply a driving voltage to the second electrode, the first common electrode is insulated from the second electrode.

[0072] It should be understood that the steps shown in the above-mentioned various forms of flow can be reordered, added or deleted. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present application can be achieved, and the present application does not limit herein.

Claims

1. An electronic paper system, comprising: At least one dot matrix electronic paper and at least one segment code electronic paper; The dot matrix electronic paper comprises a second electrode layer, a first display layer and a first electrode layer which are sequentially stacked; the first electrode layer comprises a first electrode; the dot matrix electronic paper further comprises a driving module, a first common pin of the driving module is connected with the first electrode and is configured to output a first common voltage to the first electrode; The segment code electronic paper comprises a fourth electrode layer, a second display layer and a third electrode layer which are sequentially stacked; the third electrode layer comprises a third electrode; the fourth electrode layer comprises a fourth electrode; a second common pin of the driving module is connected with the third electrode and is configured to output a second common voltage to the third electrode; a driving pin of the driving module is connected with the fourth electrode and is configured to output a driving voltage to the fourth electrode.

2. The electronic paper system of claim 1, wherein, The driving module comprises a driving chip, a first flexible circuit board and a printed circuit board; The second electrode layer comprises a first common electrode; The first common electrode is connected with the first electrode and a first end of the driving chip respectively; the driving chip is configured to generate the first common voltage according to a first voltage output by the printed circuit board and output the first common voltage through the first end of the driving chip; A second end of the driving chip is connected with a first end of the first flexible circuit board; a second end of the first flexible circuit board is connected with a first end of the printed circuit board; the first end of the first flexible circuit board and the second end of the first flexible circuit board are connected; the driving chip is configured to generate the driving voltage according to a second voltage output by the printed circuit board and output the driving voltage through the second end of the driving chip; A first end of the printed circuit board is connected with the fourth electrode; a ground end of the printed circuit board is connected with the third electrode; the ground end of the printed circuit board is configured to output the second common voltage.

3. The electronic paper system of claim 2, wherein, The segment code electronic paper further comprises a second flexible circuit board; the fourth electrode layer further comprises a second common electrode which is insulated from the fourth electrode; the second common electrode is connected with the third electrode and a first end of the second flexible circuit board respectively; a second end of the second flexible circuit board is connected with a second end of the printed circuit board; the second end of the printed circuit board is connected with the ground end of the printed circuit board; the first end of the second flexible circuit board and the second end of the second flexible circuit board are connected; A third end of the second flexible circuit board is connected with the fourth electrode; a fourth end of the second flexible circuit board is connected with a third end of the printed circuit board; the third end of the second flexible circuit board and the fourth end of the second flexible circuit board are connected; the first end of the printed circuit board and the third end of the printed circuit board are connected.

4. The electronic paper system of claim 3, wherein, The fourth electrode layer is integrated on the second flexible circuit board.

5. The electronic paper system of claim 2, wherein, The segment code electronic paper further comprises a first conductive member and a second conductive member, the fourth electrode layer comprises a second common electrode, the second common electrode is insulated from the fourth electrode, the second common electrode is connected with the third electrode and the first conductive member respectively, the first conductive member is further connected with a second end of the printed circuit board, and the second end of the printed circuit board is connected with a ground end of the printed circuit board; The second conductive member is connected with the fourth electrode and a third end of the printed circuit board respectively, and the first end of the printed circuit board is connected with the third end of the printed circuit board.

6. The electronic paper system of claim 1, wherein, The driving module comprises a first flexible circuit board and a driving chip; The second electrode layer comprises a first common electrode, the first common electrode is connected with the first electrode and a first end of the driving chip respectively; the driving chip is configured to generate the first common voltage according to a first voltage output by the first flexible circuit board and output the first common voltage through the first end of the driving chip; A second end of the driving chip is connected with a first end of the first flexible circuit board; the driving chip is configured to generate the driving voltage according to a second voltage output by the first flexible circuit board and output the driving voltage through the second end of the driving chip; The segment code electronic paper further comprises a second flexible circuit board, the fourth electrode layer comprises a second common electrode, the second common electrode is insulated from the fourth electrode, the second common electrode is connected with the third electrode and a first end of the second flexible circuit board respectively, the first end of the second flexible circuit board is connected with a second end of the second flexible circuit board, the second end of the second flexible circuit board is connected with a ground end of the first flexible circuit board; and the ground end of the first flexible circuit board is configured to output the second common voltage; The fourth electrode is connected with a third end of the second flexible circuit board, and a fourth end of the second flexible circuit board is connected with a second end of the first flexible circuit board; the third end of the second flexible circuit board is connected with the fourth end of the second flexible circuit board, and the first end of the first flexible circuit board is connected with the second end of the first flexible circuit board.

7. The electronic paper system of claim 1, wherein, The driving module comprises a chip on film circuit board and a driving chip; The second electrode layer comprises a first common electrode, the first common electrode is connected with the first electrode and a first end of the chip on film circuit board respectively, and the first end of the chip on film circuit board is connected with a first end of the driving chip; the driving chip is configured to generate the first common voltage according to a first voltage output by the chip on film circuit board and output the first common voltage through the first end of the driving chip; A second end of the chip on film circuit board is connected with a second end of the driving chip; the driving chip is configured to generate the driving voltage according to a second voltage output by the chip on film circuit board and output the driving voltage through the second end of the driving chip; The segment code electronic paper further comprises a second flexible circuit board, and the fourth electrode layer comprises a second common electrode; The second common electrode is connected with the third electrode and the first end of the second flexible circuit board respectively, the second end of the second flexible circuit board is connected with the ground end of the chip on film circuit board, the ground end of the chip on film circuit board is configured to output the second common voltage; The fourth electrode is connected with the third end of the second flexible circuit board, and the fourth end of the second flexible circuit board is connected with the second end of the driving chip.

8. The electronic paper system of claim 1, wherein, The driving module comprises a chip on film circuit board and a driving chip; The second electrode layer comprises a first common electrode, the first common electrode is connected with the first electrode and the first end of the chip on film circuit board respectively, the first end of the chip on film circuit board is connected with the first end of the driving chip, and the driving chip is configured to generate the first common voltage according to a first voltage output by the chip on film circuit board and output the first common voltage through the first end of the driving chip. The second end of the chip on film circuit board is connected with the second end of the driving chip, and the driving chip is configured to generate the driving voltage according to a second voltage output by the chip on film circuit board and output the driving voltage through the second end of the driving chip. The fourth electrode layer comprises a second common electrode; The second common electrode is connected with the third electrode and the third end of the chip on film circuit board respectively, the third end of the chip on film circuit board is connected with the ground end of the chip on film circuit board, and the ground end of the chip on film circuit board is configured to output the second common voltage; The fourth electrode is connected with the fourth end of the chip on film circuit board, and the fourth end of the chip on film circuit board is connected with the second end of the driving chip.

9. The electronic paper system of any of claims 1-8, wherein, The dot matrix electronic paper comprises a main display area and a frame display area surrounding the main display area, and the second electrode layer comprises a second electrode in the frame display area. The driving pin of the driving module is also connected with the second electrode and configured to output the driving voltage to the second electrode.

10. The electronic paper system of claim 9, wherein, The shape of the second electrode is any one of a closed ring, an L type, a U type, a C type, an I type and a broken ring; Or, the shape of the fourth electrode is any one of a closed ring, an L type, a U type, a C type, an I type and a broken ring; Or, the shape of the second electrode is any one of a closed ring, an L type, a U type, a C type, an I type and a broken ring; and the shape of the fourth electrode is any one of a closed ring, an L type, a U type, a C type, an I type and a broken ring.

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