Electronic paper driving substrate, display panel and display device

Abstract

The invention discloses an electronic paper driving substrate, an electronic paper display panel and a display device, relates to the technical field of display, and can balance the display screen proportion of a display screen and improve the shape coordination of a display area. The electronic paper driving substrate comprises a substrate; the driving layer is arranged on one side of the substrate, and the driving layer comprises a plurality of pixel electrodes; the substrate comprises a pixel area and a non-pixel area, the non-pixel area at least partially surrounds the pixel area, the pixel electrode is arranged in the pixel area, and the non-pixel area comprises an elargol area; the corner of the pixel area comprises at least two chamfer edges, the two chamfer edges are symmetrical about the midpoint of the diagonal line of the pixel area, and / or the two chamfer edges are symmetrical about the midpoint of the edge between the two chamfer edges; the elargol area is arranged close to the edge of the chamfer, and the elargol area is used for arranging elargol.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to an electronic paper driving substrate, an electronic paper display panel and a display device. Background Art

[0002] At present, electronic paper display devices are display products made using electrophoretic display technology. The control circuit on the thin film transistor TFT (Thin Film Transistor) substrate applies a driving voltage to each pixel to achieve the effect of displaying images. Due to its low power consumption, wide viewing angle, high contrast, eye protection and many other features, electronic paper display devices are increasingly widely used in many fields such as electronic price tags, e-books, billboards, etc.

[0003] With the continuous development of electronic paper display technology, the screen-to-body ratio requirements of electronic paper displays are getting higher and higher. In order to improve the screen-to-body ratio, the shape of the display area is usually partially designed with special shapes. However, although the design of the partially special-shaped display area can improve the screen-to-body ratio to a certain extent, the design of the partially special-shaped display area will affect the coordination and aesthetics of the entire display, especially the special-shaped area of ​​the display screen with a single silver glue dot will highlight the poor appearance coordination. Summary of the invention

[0004] The embodiments of the present disclosure provide an electronic paper driving substrate, an electronic paper display panel and a display device, which can balance the display screen ratio of the display screen and improve the coordination of the display area shape.

[0005] A first aspect of the present disclosure provides an electronic paper driving substrate, characterized by comprising:

[0006] substrate;

[0007] A driving layer, disposed on one side of the substrate, the driving layer comprising a plurality of pixel electrodes;

[0008] The substrate includes a pixel region and a non-pixel region, wherein the non-pixel region at least partially surrounds the pixel region, the pixel electrode is disposed in the pixel region, and the non-pixel region includes a silver paste region;

[0009] The corner of the pixel region comprises at least two chamfered edges, the two chamfered edges are symmetrical about a midpoint of a diagonal line of the pixel region, and / or the two chamfered edges are symmetrical about a midpoint of an edge between the two chamfered edges;

[0010] The silver glue area is arranged close to the chamfered edge, and the silver glue area is used for arranging silver glue.

[0011] In some embodiments, the edges of the pixel area connected to both sides of the chamfered edge are respectively a first edge and a second edge, and the extension lines of the first edge and the second edge on the same side form a virtual corner area with the chamfered edge, and the silver paste area overlaps with the virtual corner area.

[0012] In some embodiments, the ratio of the overlapping area of ​​the silver paste area and the virtual corner area to the area of ​​the silver paste area is greater than or equal to 20%; and / or,

[0013] The chamfered edge includes a straight chamfer or a curved chamfer; and / or,

[0014] The silver paste region is provided with a conductive structure, the conductive structure is used to be electrically connected to the silver paste, and the orthographic projection shape of the conductive structure on the substrate includes a circle, an ellipse or a strip.

[0015] In some embodiments, the chamfered edge includes a curved chamfer, the curvature radius of the curved chamfer is less than or equal to 10 mm, and the curvature radius of the curved chamfer is positively correlated with the size of the electronic paper driving substrate.

[0016] In some embodiments, the electronic paper driving substrate further includes:

[0017] a transition structure, wherein an orthographic projection of the transition structure on the substrate surrounds the pixel region;

[0018] The silver paste area has no overlap with the orthographic projection of the transition structure on the substrate.

[0019] In some embodiments, an orthographic projection of the transition structure on the substrate covers an edge of the pixel region.

[0020] In some embodiments, the driving layer includes a plurality of conductive layers, the driving layer includes a common signal line, a plurality of pixel circuits, a plurality of scanning signal lines, and a plurality of data signal lines, the scanning signal lines and the data signal lines are electrically connected to the pixel circuits, and the pixel circuits are electrically connected to the pixel electrodes;

[0021] A conductive structure is disposed in the silver glue area, the conductive structure is disposed in the same layer as at least one conductive layer, and the common signal line is electrically connected to the conductive structure;

[0022] The orthographic projections of the scan signal line and the data signal line on the substrate do not overlap with the orthographic projection of the conductive structure on the substrate.

[0023] In some embodiments, the conductive structure includes a plurality of hollows, so that the conductive structure is a patterned structure.

[0024] In some embodiments, the conductive structure includes a plurality of ring structures and a plurality of connecting structures, and two adjacent ring structures are connected by the connecting structures;

[0025] The annular structure is connected to the conductive layer arranged in the same layer through the connecting structure.

[0026] In some embodiments, the connection structure is in a cross shape.

[0027] In some embodiments, the substrate includes a binding pin area, the binding pin area includes a plurality of binding pins;

[0028] The silver glue area is located on a side of the pixel area close to the binding pin area; and / or,

[0029] The four corners of the pixel area are all chamfered edges.

[0030] In a second aspect of the present application, an electronic paper display panel is provided, comprising:

[0031] The electronic paper driving substrate as described in the first aspect;

[0032] An upper substrate, arranged on a side of the electronic paper driving substrate where the pixel electrode is arranged, the upper substrate comprising an electronic paper film, the electronic paper film comprising a common electrode layer and a charged particle layer, the charged particle layer being arranged on a side of the common electrode layer close to the electronic paper driving substrate;

[0033] The silver paste region of the electronic paper driving substrate is provided with silver paste, and the silver paste is electrically connected to the electronic paper driving substrate and the common electrode layer respectively.

[0034] In some embodiments, the electronic paper display panel further includes:

[0035] A protective layer is provided on a side of the electronic paper film away from the electronic paper driving substrate, wherein the orthographic projection of the protective layer on the substrate of the electronic paper driving substrate covers the orthographic projection of the electronic paper film on the substrate;

[0036] The orthographic projection of the electronic paper film on the substrate covers the pixel area of ​​the electronic paper driving substrate and the silver paste area.

[0037] In some embodiments, the electronic paper film includes a main body, a connecting portion and a retracted portion, the connecting portion is connected between the main body and the retracted portion, the orthographic projection of the main body on the substrate covers the pixel area, and the orthographic projection of the connecting portion on the substrate covers the silver paste area.

[0038] In some embodiments, the orthographic projection of the common electrode layer on the substrate covers the pixel area and the silver paste area;

[0039] The connecting portion is provided with a silver paste via hole, and the silver paste is electrically connected to the common electrode layer through the silver paste via hole.

[0040] In some embodiments, an edge of the retracted portion exceeds an edge of the main body portion in a first direction and is not flush, and the first direction is a direction from the pixel region to the silver paste region.

[0041] In some embodiments, the electronic paper film includes a shaped edge, the shaped edge is located between two adjacent connecting portions, and the shaped edge is retracted toward the pixel region relative to the connecting portion.

[0042] In some embodiments, when the substrate includes a binding pin area, the orthographic projection of the irregular edge on the substrate has no overlap with the binding pin area, and the binding pin area is located on a side of the irregular edge away from the pixel area.

[0043] According to a third aspect of the present application, a display device is provided, comprising:

[0044] The electronic paper driving substrate as described in the first aspect; and / or,

[0045] The electronic paper display panel as described in the second aspect.

[0046] The electronic paper driving substrate provided in the embodiment of the present application can increase the adaptability and appearance of the whole product of the electronic paper driving substrate by setting a chamfered edge at the corner of the pixel area of ​​the electronic paper driving substrate. The silver glue is set close to the chamfered edge, which can reduce the display area occupied by the silver glue point, and thus can play a role in reducing the frame. By setting two chamfered edges to be stacked about the midpoint of the edge, and the two chamfered edges are symmetrical about the midpoint of the diagonal, the aesthetics of the display area where the chamfered edge is set and the effect of reducing the frame can be further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic top view of an electronic paper display provided in an embodiment of the present application;

[0048] Figure 2 A schematic partial cross-sectional view of an electronic paper driving substrate provided in an embodiment of the present application;

[0049] Figure 3 A schematic top view of an electronic paper driving substrate provided in an embodiment of the present application;

[0050] Figure 4A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0051] Figure 5 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0052] Figure 6 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0053] Figure 7 A schematic top view of an electronic paper driving substrate provided in an embodiment of the present application;

[0054] Figure 8 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0055] Fig. 9 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0056] Fig.10 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application;

[0057] Fig.11 A schematic partial top view of the chamfered edge corresponding to a silver glue area provided in an embodiment of the present application;

[0058] Fig.12 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application;

[0059] Fig.13 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application;

[0060] Fig.14 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application;

[0061] Fig.15 A schematic partial top view of the chamfered edge corresponding to a silver glue area provided in an embodiment of the present application;

[0062] Fig.16 A cross-sectional structural diagram of a region where a chamfered edge is located along the line ab provided in an embodiment of the present application;

[0063] Fig.17 A schematic partial top view of a silver glue area provided in an embodiment of the present application;

[0064] Fig.18A schematic cross-sectional view of an electronic paper display panel provided in an embodiment of the present application;

[0065] Fig.19 A schematic top view of an electronic paper display panel provided in an embodiment of the present application;

[0066] Fig. 20 A schematic top view of another electronic paper display panel provided in an embodiment of the present application;

[0067] Fig.21 A display device is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0068] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0069] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0070] An electronic paper display device is a display product made using electrophoretic display technology. The driving voltage is applied to each pixel through the control circuit on the thin-film transistor (TFT) substrate to achieve the effect of displaying an image. Due to its many characteristics such as low power consumption, wide viewing angle, high contrast, and eye protection, electronic paper display devices are increasingly used in many fields such as electronic price tags, e-books, and billboards. With the continuous development of electronic paper display technology, the screen-to-body ratio requirements of electronic paper displays are getting higher and higher. The setting of silver glue dots usually occupies part of the display area of ​​the electronic paper display. In order to increase the screen-to-body ratio, the shape of the display area is usually partially designed with special shapes, that is, the display area can be

[0071] The local area is concave or partially retracted, and the concave or retracted local area is used to avoid the position of the silver glue dots. The special-shaped design of the local display area corresponding to the silver glue dots can avoid the border being too wide due to the setting of the silver glue dots, thereby increasing the display screen ratio.

[0072] Figure 1 A schematic top view of an electronic paper display provided in an embodiment of the present application. Figure 1 The non-display area NA surrounds the display area AA, and the silver glue dot Ag is set at the lower left corner of the display area AA. In order to avoid the silver glue dot Ag, the lower left corner of the display area AA is retracted to form an irregular display area setting in the lower left corner. Figure 1 The dotted line shown is the lower edge of the display area when the special-shaped indentation is not set. It can be seen that setting the special-shaped display area in the lower left corner can reduce the size of the non-display area of ​​the lower frame, that is, reduce the lower frame, thereby increasing the display screen ratio.

[0073] However, although the design of partially irregular display areas can improve the screen-to-body ratio to a certain extent, the design of partially irregular display areas will affect the coordination and aesthetics of the entire display, especially the irregular areas of the display screen with a single silver glue dot, which further highlights the poor appearance coordination. The poor coordination of the entire machine is mainly reflected in the poor assembly adaptability of the display screen in the irregular display area on the entire machine. For example, an e-paper display screen of a certain model or size can be used in different complete machine products, but the display screen with irregular layout has a smaller application range in the entire machine.

[0074] In view of this, an embodiment of the present application provides an electronic paper driving substrate. Figure 2 A schematic partial cross-sectional view of an electronic paper driving substrate provided in an embodiment of the present application; Figure 3 A schematic top view of an electronic paper driving substrate provided in an embodiment of the present application.

[0075] Exemplary, reference Figure 2 and Figure 3 The electronic paper driving substrate may include: a substrate 100 and a driving layer 200, the driving layer 200 is arranged on one side of the substrate 100, and the driving layer 200 includes a plurality of pixel electrodes 201; the substrate 100 includes a pixel area 110 and a non-pixel area 120, the non-pixel area 120 at least partially surrounds the pixel area 110, the pixel electrode 201 is arranged in the pixel area 110, and the non-pixel area 120 includes a silver paste area 121; the corner of the pixel area 110 includes at least two chamfered edges 111. The silver paste area 121 is arranged close to the chamfered edge 111, and the silver paste area 121 is used to set silver paste. The silver paste can be used to electrically connect the driving layer with the electronic paper film.

[0076] In some examples, reference Figure 3, there are two chamfered edges 111 symmetrical about the edge midpoint 101 between the two chamfered edges 111 .

[0077] Figure 4 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. In some examples, reference Figure 4 There are two chamfered edges 111 symmetrically about the diagonal midpoint 102 of the pixel area 110 .

[0078] It should be noted that Figure 3 and Figure 4 Each pixel area 110 is provided with four chamfered edges 111, and the edge shape is regular.

[0079] By setting chamfered edges at the corners of the pixel area of ​​the electronic paper drive substrate, the setting of the chamfered edges can increase the adaptability and appearance of the entire product of the electronic paper drive substrate. The silver glue is set close to the chamfered edge, which can reduce the display area occupied by the silver glue point, and thus can play a role in reducing the border. By setting two chamfered edges to be stacked about the midpoint of the edge, and the two chamfered edges are symmetrical about the midpoint of the diagonal, the aesthetics of the display area where the chamfered edges are set and the effect of reducing the border can be further increased.

[0080] Exemplarily, the number of silver pastes can be 1, 2, 3, 4 or more, that is, the number of silver paste areas can be correspondingly set to 1, 2, 3, 4 or more, which is not specifically limited in the embodiments of the present application.

[0081] Figure 5 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. In some examples, reference Figure 5 The pixel area of ​​the electronic paper driving substrate is provided with two chamfered edges 111 and two right-angled edges 112, the chamfered edge 111 is provided at the lower side, the right-angled edge 112 is provided at the upper side, and the silver glue area 121 is provided corresponding to the chamfered edge 111. The two chamfered edges 111 are symmetrical about the midpoint of the edge, and can also have the effect of aesthetics and reducing the frame.

[0082] Figure 6 A schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. In some examples, reference Figure 6 The pixel area of ​​the electronic paper driving substrate is provided with two chamfered edges 111 and two right-angled edges 112, the chamfered edges 111 are provided at both ends of a diagonal line, the right-angled edges 112 are provided at both ends of another diagonal line, and the silver glue area 121 is provided corresponding to the chamfered edges 111. The two chamfered edges 111 are symmetrical about the midpoint 102 of the diagonal line, and can also have the effect of aesthetics and reducing the frame.

[0083] In some examples, the chamfered edge may include a straight chamfer or a curved chamfer.

[0084] Exemplarily, the chamfered edge includes a curved chamfer, the curvature radius of the curved chamfer is less than or equal to 10 mm, and the curvature radius of the curved chamfer is positively correlated with the size of the electronic paper drive substrate. The larger the size of the electronic paper drive substrate, the larger the curvature radius left for the chamfered edge.

[0085] In some examples, the curvature of the curved chamfer is positively correlated with the area of ​​the silver paste region invading the rectangular display area, that is, the larger the area of ​​the original silver paste region invading the rectangular display area, the larger the curvature of the curved chamfer.

[0086] Exemplary, reference Figures 3 to 6 The chamfered edge 111 is a curved chamfer, for example, a circular chamfer. For a corner that occupies a larger area, the frame reduction effect is better.

[0087] Figure 7 A schematic top view of an electronic paper drive substrate provided in an embodiment of the present application. In some examples, reference Figure 7 The chamfered edge 111 is a linear chamfer, and the chamfered shape can still reduce the frame and improve the aesthetics.

[0088] In some embodiments, the edges of the pixel area connected to both sides of the chamfered edge are respectively a first edge and a second edge, and the extension lines on the same side of the first edge and the second edge and the chamfered edge form a virtual corner area, and the silver glue area overlaps the virtual corner area.

[0089] Figure 8 This is a schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. Figure 8 As shown, the extension lines of the first edge 103 and the second edge 104 on the same side and the chamfered edge 111 enclose a virtual corner area 105 .

[0090] Exemplary, reference Figure 8 The ratio of the overlapping area between the silver paste area 121 and the virtual corner area 105 to the area of ​​the silver paste area 121 is greater than or equal to 20%, for example, it can be 50%, 80% or 90%.

[0091] In some embodiments, the electronic paper driving substrate further includes: a transition structure, the orthographic projection of the transition structure on the substrate surrounds the pixel area. The transition structure can serve as a transition between the display area and the non-display area, provide color transition, and play a role in color transition when the user views the paper display panel.

[0092] For example, the transition structure may be made of a white material. A frame glue may be disposed around the transition structure, and the frame glue may be used as an edge-sealing glue for the electronic paper drive substrate.

[0093] Fig. 9 This is a schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. Fig. 9 As shown, the transition structure 400 surrounds the pixel region 110 , and the orthographic projection of the transition structure 400 on the substrate surrounds the pixel region.

[0094] Exemplarily, the orthographic projection of the transition structure 400 on the substrate covers the edge of the pixel region 110. The transition structure 400 may serve as the edge of the pixel region 110.

[0095] Exemplary, reference Fig. 9 The shape of the silver paste area 121 is a prototype, and can also be an ellipse.

[0096] Fig.10 This is a schematic top view of another electronic paper driving substrate provided in an embodiment of the present application. Fig.10 As shown, the shape of the silver paste area 121 is a strip; the silver paste area 121 and the orthographic projection of the transition structure 400 on the substrate do not overlap.

[0097] In some embodiments, reference Fig. 9 and Figure 1 The substrate includes a binding pin area, which includes a plurality of binding pins; the binding pin area may include a first binding pin area 130 and a second binding pin area 140, the first binding pin area 130 can be used to bind the connected driver chip, and the second binding pin area 140 can be used to bind the flexible circuit board.

[0098] In some examples, reference Fig. 9 and Fig.10 The silver glue area 121 is located on the side of the pixel area 120 close to the binding pin area; the first binding pin area 130 is located between the pixel area 110 and the second binding pin area 140, and the silver glue area is set close to the first binding pin area 130. The border space of the binding pin area can be used to set the silver glue area, thereby reducing the width occupied by the silver glue on the border.

[0099] Exemplary, reference Figures 3 to 10 The shape of the silver paste area 121 shown may also be the shape of the silver paste, and the boundary of the silver paste area 121 may also be the boundary of the silver paste.

[0100] In some embodiments, the driving layer includes a plurality of conductive layers, and the driving layer includes a common signal line, a plurality of pixel circuits, a plurality of scanning signal lines, and a plurality of data signal lines. The scanning signal line and the data signal line are electrically connected to the pixel circuit, and the pixel circuit is electrically connected to the pixel electrode; the pixel circuit can provide a driving signal to each pixel electrode. The common signal line is used to transmit a common signal, and the common signal is transmitted to the common electrode of the electronic paper film through the pins in the silver glue area. The common electrode and the pixel electrode can provide a driving electric field for the ink in the electronic paper film, thereby realizing the display of the electronic paper film. The ink can be a charged particle, and the charged particle moves under the drive of the electric field, thereby forming a light-shielding and light-transmitting effect to realize the display function.

[0101] In some examples, a conductive structure is disposed in the silver paste area, the conductive structure is disposed in the same layer as at least one conductive layer, the common signal line is electrically connected to the conductive structure, and the common signal line is disposed in the same layer as at least one conductive layer. The orthographic projection of the scanning signal line and / or the data signal line on the substrate does not overlap with the orthographic projection of the conductive structure on the substrate.

[0102] In some examples, the orthographic projection of the scan signal line and / or the data signal line on the substrate does not overlap with the silver paste area.

[0103] Fig.11 A schematic partial top view of the chamfered edge corresponding to a silver glue area provided in an embodiment of the present application. Fig.11 The data signal line 410 is used to provide a data signal to the pixel electrode 201, and the scanning signal line 420 is used to provide a scanning signal to the pixel circuit. The pixel circuit may include a driving transistor, and the scanning signal is used to drive the switching state of the driving transistor. The data signal line 410 can extend in the column direction, and the data signal line 410 can be arranged in the row direction. The scanning signal line 420 can extend in the row direction, and the scanning signal line can be arranged in the column direction. The data signal line 410 and the scanning signal line 420 can define a pixel area, and the pixel electrode is arranged in the pixel area. The pixel area can serve as a basic unit of display.

[0104] In some examples, the silver paste region is provided with a conductive structure, the conductive structure is used to be electrically connected to the silver paste, and the orthographic projection shape of the conductive structure on the substrate includes a circle, an ellipse or a strip.

[0105] In some examples, reference Fig.11 The data signal lines 410 and the scanning signal lines 420 both avoid the silver paste area 121 , that is, the orthographic projections of the data signal lines 410 and the scanning signal lines 420 on the substrate do not overlap with the silver paste area 121 .

[0106] In some examples, the orthographic projections of the data signal line 410 and the scan signal line 420 on the substrate do not overlap with the orthographic projections of the conductive structure on the substrate, thereby avoiding signal interference between the conductive structure, the data signal line 410 and the scan signal line 420.

[0107] In some examples, the data signal line 410 surrounds the silver paste area 121 on both sides, and avoids the silver paste area 121 . The scan signal line 420 surrounds the silver paste area 121 on both sides, and avoids the silver paste area 121 .

[0108] Fig.12 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application. Fig.12 Part of the data signal line 410 surrounds the silver paste area 121 on both sides thereof, avoiding the silver paste area 121 . Part of the scanning signal line 420 half surrounds the silver paste area 121 on the upper side thereof, avoiding the silver paste area 121 .

[0109] Fig.13 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application. In some examples, reference Fig.13 , part of the data signal line 410 surrounds the silver paste area 121 on both sides. The orthographic projection of part of the scanning signal line 420 on the substrate overlaps with the silver paste area 121. When there is insufficient space for the scanning signal line 420 to avoid the silver paste area 121, the scanning signal line 420 may overlap with the silver paste area 121.

[0110] Fig.14 A schematic partial top view of the chamfered edge corresponding to another silver glue area provided in an embodiment of the present application. Fig.14 , part of the scanning signal line 420 surrounds the silver paste area 121 on both sides above and below the silver paste area 121 to avoid the silver paste area 121. The orthographic projection of part of the data signal line 410 on the substrate overlaps with the silver paste area 121. When there is insufficient space for the data signal line 410 to avoid the silver paste area 121, the data signal line 410 may overlap with the silver paste area 121.

[0111] Fig.15 A schematic partial top view of the chamfered edge corresponding to a silver glue area provided in an embodiment of the present application. In some examples, reference Fig.15 Part of the data signal line 410 and part of the scanning signal line 420 partially surround the silver paste area 121 close to one side of the transition structure 300 .

[0112] Fig.16A cross-sectional structure diagram of the area where the chamfered edge is located along ab provided in an embodiment of the present application. In some examples, the driving layer includes a first conductive layer 210, a second conductive layer 220, a first insulating layer 202, a second insulating layer 203 and a pixel electrode layer 204, the pixel electrode 201 is arranged on the pixel electrode layer 204, and the electronic paper film 600 and the protective layer 700 are arranged in sequence on the side of the driving layer away from the substrate 100, and the electronic paper film includes a charged particle layer 640 and a common electrode layer 500, and the charged particle layer 640 is arranged on the side of the common electrode layer 500 close to the electronic paper driving substrate. The first conductive layer 210 can be provided with a scan signal line 420 and a gate of a driving transistor, and the second conductive layer 220 can be provided with a data signal line 410 and a source and drain electrode of the driving transistor. The conductive structure can be arranged in the first conductive layer 210, and the conductive structure can also be arranged in the second conductive layer. The scan signal line 420 surrounding the periphery of the silver glue area 121 and the data signal line 410 have a partial overlap in their positive projection on the substrate.

[0113] In some embodiments, the conductive structure includes multiple hollows to make the conductive structure a graphical structure. The conductive structure includes multiple ring structures and multiple connecting structures, and the ring structures of two adjacent rings are connected by the connecting structure; the ring structure is connected to the conductive layer arranged on the same layer by the connecting structure.

[0114] Fig.17 A schematic partial top view of a silver paste region provided in an embodiment of the present application. Fig.17 The conductive structure 211 is disposed on the first conductive layer 210 . The conductive structure 211 includes an annular structure 212 and a connecting structure 213 . A hollow 214 is disposed between the annular structure 212 and the connecting structure 213 . Fig.17 The annular structure shown is three circles, and the three annular structures 212 are connected by a connecting structure 213. The outermost annular structure 212 is connected to the conductive layer of the same layer through the connecting structure 213, and there is also a hollow 214 between the outermost annular structure 212 and the remaining first conductive layers 210. The outer boundary of the silver glue 122 can coincide with the hollow edge of the outermost circle. The structure connected to the conductive structure 211 can be a common signal line 215, which can be used to transmit a common signal. The common signal line 215 can be electrically connected to the common electrode layer 500 through the conductive structure 211 and the silver glue. The positive projection of the common electrode layer 500 on the substrate covers the positive projection of the conductive structure 211 on the substrate to ensure the connection effect of the silver glue. The common signal on the common electrode layer 500 can form a driving electric field with the signal on the pixel electrode, and the driving electric field can drive the ink particles of the electronic paper film to move to control the light transmittance state of the pixel area, thereby realizing display.

[0115] Exemplary, reference Fig.17, the connection structure 213 is cross-shaped.

[0116] The patterned conductive structure can ensure good conductive performance and can also play a role in marking and positioning. In the process flow of silver glue setting, positioning is performed according to the patterned characteristics of the conductive structure.

[0117] Fig.18 A schematic cross-sectional view of an electronic paper display panel provided in an embodiment of the present application. Fig.18 As shown, the electronic paper display panel includes: an electronic paper driving substrate and an upper substrate 800 as provided in any of the above embodiments, the electronic paper driving substrate includes a substrate 100 and a driving layer 200, and the upper substrate 800 is arranged on a side of the driving layer 200 away from the substrate 100. The upper substrate 800 is arranged on a side of the electronic paper driving substrate where the pixel electrode is arranged.

[0118] Fig.19 A schematic top view of an electronic paper display panel provided in an embodiment of the present application. In some examples, reference Fig.16 and Fig.19 The upper substrate includes an electronic paper film 600, which includes a charged particle layer 640 and a common electrode layer 500. The charged particle layer 640 is arranged on a side of the common electrode layer 500 close to the electronic paper driving substrate; the silver paste area of ​​the electronic paper driving substrate is provided with silver paste 122, which is electrically connected to the common signal line of the electronic paper driving substrate and the common electrode layer 500, respectively.

[0119] In some examples, reference Fig.19 The transition structure 300 surrounds the pixel area 110, and the electronic paper film 600 covers the pixel area 110, the transition structure 300 and the silver glue 122. The silver glue 122 is arranged on a side of the pixel area 110 close to the first binding pin area 130. The width of the frame where the binding pin is located can be used to accommodate the silver glue 122, thereby avoiding the silver glue area occupying too much frame width, thereby achieving a narrow frame.

[0120] In some embodiments, the electronic paper display panel further includes: a protective layer, the protective layer is arranged on a side of the electronic paper film away from the electronic paper driving substrate, the orthographic projection of the protective layer on the substrate of the electronic paper driving substrate covers the orthographic projection of the electronic paper film on the substrate; the orthographic projection of the electronic paper film on the substrate covers the pixel area and silver paste area of ​​the electronic paper driving substrate.

[0121] Exemplarily, the protective layer may be a waterproof protective film, which may be transparent and attached to the upper side of the electronic paper film, mainly to prevent the electronic paper film from being scratched and water vapor from entering and corroding the electronic paper film.

[0122] Exemplary, reference Fig.19The boundary of the protective layer 700 surrounds the boundary of the electronic paper film 600 , the boundary of the electronic paper film 600 surrounds the silver glue 122 and the transition structure 300 , and the orthographic projections of the protective layer 700 and the first binding pin area 130 and the second binding pin area 140 on the substrate do not overlap.

[0123] In some embodiments, the electronic paper film includes a main body and a connecting portion, the orthographic projection of the main body on the substrate covers the pixel area, and the orthographic projection of the connecting portion on the substrate covers the silver paste area.

[0124] Fig. 20 A schematic top view of another electronic paper display panel provided in an embodiment of the present application. Fig. 20 The electronic paper film 600 includes a main body 610, a connecting portion 620 and a retracted portion 630. The connecting portion 620 is connected between the main body 610 and the retracted portion 630. The retracted portion 630 is used to avoid the first binding pin area 130. The connecting portion 620 is used to cover the silver glue 122. In order to further reduce the influence of the silver glue 122 on the display area, the silver glue 122 can be moved downward to reduce the radius of the chamfered edge, thereby increasing the area of ​​the pixel area 110. In order to ensure the stable connection of the silver glue 122, the electronic paper film 600 at the corresponding position of the silver glue 122 needs to be partially protruded, so that the lower boundary of the connecting portion 620 and the retracted portion 630 is not flush.

[0125] For example, taking a 2.13-inch display panel product as an example, the downward movement of the silver glue is small, and the arc curvature radius of the chamfered edge is adjusted from 9.5 mm to 7.6 mm.

[0126] Exemplary, reference Fig. 20 The boundary of the protective layer 700 corresponds to the boundary setting of the electronic paper film 600 . The protective layer 700 includes a main body boundary 710 , a connecting boundary 720 and a retracted boundary 730 . The main body boundary 710 surrounds the main body 610 , the connecting boundary 720 surrounds the connecting portion 620 , and the retracted boundary 730 surrounds the retracted portion 630 .

[0127] In some examples, reference Fig. 20 The edge of the connecting portion 620 exceeds the edge of the retracted portion 630 in the first direction and is not flush. The first direction is the direction from the pixel area 110 to the silver glue area. The first direction is also the direction from the pixel area 110 to the pin 122.

[0128] In some examples, the electronic paper film includes a shaped edge, which is located between two adjacent connecting portions. The shaped edge is an edge of the retracted portion 630 , and the shaped edge is retracted relative to the connecting portion 620 toward the pixel region 110 .

[0129] In some examples, when the substrate includes a binding pin area, the orthographic projection of the special-shaped edge on the substrate does not overlap with the binding pin area, and the binding pin area is located on a side of the special-shaped edge away from the pixel area.

[0130] In some embodiments, the orthographic projection of the common electrode layer on the substrate covers the pixel region and the silver paste region; the common electrode layer covers the silver paste.

[0131] In some examples, the connection portion is provided with a silver paste via, and the silver paste is electrically connected to the common electrode layer through the silver paste via.

[0132] The electronic paper display panel provided in the embodiment of the present application is provided with a chamfered edge at the corner of the pixel area of ​​the electronic paper driving substrate. The setting of the chamfered edge can increase the adaptability and appearance of the whole product of the electronic paper driving substrate. The silver glue is arranged close to the chamfered edge, which can reduce the area of ​​the display area occupied by the silver glue point, and thus can play a role in reducing the frame. By setting two chamfered edges to be stacked about the midpoint of the edge, and the two chamfered edges are symmetrical about the midpoint of the diagonal, the aesthetics of the display area where the chamfered edge is set and the effect of reducing the frame can be further increased.

[0133] In some embodiments, a display device is provided. Fig.21 A display device is provided in an embodiment of the present application. Fig.21 , the display device includes: an electronic paper driving substrate 1000 as described in any of the above embodiments.

[0134] In some implementations, a display device is provided, including: an electronic paper display panel as described in any of the above embodiments.

[0135] The display device provided in the embodiment of the present application sets chamfered edges at the corners of the pixel area of ​​the electronic paper driving substrate. The setting of the chamfered edges can increase the adaptability and appearance of the whole product of the electronic paper driving substrate. The silver glue is set close to the chamfered edge, which can reduce the area of ​​the display area occupied by the silver glue point, and thus can play a role in reducing the frame. By setting two chamfered edges to be stacked about the midpoint of the edge, and the two chamfered edges are symmetrical about the midpoint of the diagonal, the aesthetics of the display area where the chamfered edges are set and the effect of reducing the frame can be further increased.

[0136] It should be noted that the display devices provided in the examples of the present disclosure may include smart phones, tablet computers, laptop computers, televisions, and smart wearable display devices, etc. The smart wearable display devices may include smart watches, VR (augmented reality) displays, and AR (virtual reality) displays, etc., and the embodiments of the present disclosure are not specifically limited.

[0137] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

[0138] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0139] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. An electronic paper driving substrate, characterized in that: include: substrate; A driving layer, disposed on one side of the substrate, the driving layer comprising a plurality of pixel electrodes; The substrate includes a pixel region and a non-pixel region, wherein the non-pixel region at least partially surrounds the pixel region, the pixel electrode is disposed in the pixel region, and the non-pixel region includes a silver paste region; The corner of the pixel region comprises at least two chamfered edges, the two chamfered edges are symmetrical about a midpoint of a diagonal line of the pixel region, and / or the two chamfered edges are symmetrical about a midpoint of an edge between the two chamfered edges; The silver glue area is arranged close to the chamfered edge, and the silver glue area is used for arranging silver glue.

2. The electronic paper driving substrate according to claim 1, characterized in that: The edges of the pixel area connected to both sides of the chamfered edge are respectively a first edge and a second edge, and the extension lines of the first edge and the second edge on the same side and the chamfered edge form a virtual corner area, and the silver glue area overlaps with the virtual corner area.

3. The electronic paper driving substrate according to claim 2, characterized in that: The ratio of the overlapping area between the silver paste area and the virtual corner area to the area of ​​the silver paste area is greater than or equal to 20%; and / or, The chamfered edge includes a straight chamfer or a curved chamfer; and / or, The silver paste region is provided with a conductive structure, the conductive structure is used to be electrically connected to the silver paste, and the orthographic projection shape of the conductive structure on the substrate includes a circle, an ellipse or a strip.

4. The electronic paper driving substrate according to claim 1, characterized in that: The chamfered edge includes a curved chamfer, the curvature radius of the curved chamfer is less than or equal to 10 mm, and the curvature radius of the curved chamfer is positively correlated with the size of the electronic paper driving substrate.

5. The electronic paper driving substrate according to any one of claims 1 to 4, characterized in that: Also includes: a transition structure, wherein an orthographic projection of the transition structure on the substrate surrounds the pixel region; The silver paste area has no overlap with the orthographic projection of the transition structure on the substrate.

6. The electronic paper driving substrate according to claim 5, characterized in that: The orthographic projection of the transition structure on the substrate covers the edge of the pixel area.

7. The electronic paper driving substrate according to claim 1, characterized in that: The driving layer includes a plurality of conductive layers, the driving layer includes a common signal line, a plurality of pixel circuits, a plurality of scanning signal lines and a plurality of data signal lines, the scanning signal lines and the data signal lines are both electrically connected to the pixel circuits, and the pixel circuits are electrically connected to the pixel electrodes; A conductive structure is disposed in the silver glue area, the conductive structure is disposed in the same layer as at least one conductive layer, and the common signal line is electrically connected to the conductive structure; The orthographic projections of the scan signal line and the data signal line on the substrate do not overlap with the orthographic projection of the conductive structure on the substrate.

8. The electronic paper driving substrate according to claim 7, characterized in that: The conductive structure includes a plurality of hollows, so that the conductive structure is a patterned structure.

9. The electronic paper driving substrate according to claim 7, characterized in that: The conductive structure includes a multi-circle annular structure and a plurality of connecting structures, and the annular structures of two adjacent circles are connected by the connecting structures; The annular structure is connected to the conductive layer arranged in the same layer through the connecting structure.

10. The electronic paper driving substrate according to claim 9, characterized in that: The connecting structure is cross-shaped.

11. The electronic paper driving substrate according to claim 1, characterized in that: The substrate includes a binding pin area, and the binding pin area includes a plurality of binding pins; The silver glue area is located on a side of the pixel area close to the binding pin area; and / or, The four corners of the pixel area are all chamfered edges.

12. An electronic paper display panel, characterized in that: include: The electronic paper driving substrate according to any one of claims 1 to 11; An upper substrate, arranged on a side of the electronic paper driving substrate where the pixel electrode is arranged, the upper substrate comprising an electronic paper film, the electronic paper film comprising a common electrode layer and a charged particle layer, the charged particle layer being arranged on a side of the common electrode layer close to the electronic paper driving substrate; The silver paste region of the electronic paper driving substrate is provided with silver paste, and the silver paste is electrically connected to the electronic paper driving substrate and the common electrode layer respectively.

13. The electronic paper display panel according to claim 12, characterized in that: Also includes: A protective layer is provided on a side of the electronic paper film away from the electronic paper driving substrate, wherein the orthographic projection of the protective layer on the substrate of the electronic paper driving substrate covers the orthographic projection of the electronic paper film on the substrate; The orthographic projection of the electronic paper film on the substrate covers the pixel area of ​​the electronic paper driving substrate and the silver paste area.

14. The electronic paper display panel according to claim 13, characterized in that: The electronic paper film includes a main body, a connecting part and a retracted part, wherein the connecting part is connected between the main body and the retracted part, the orthographic projection of the main body on the substrate covers the pixel area, and the orthographic projection of the connecting part on the substrate covers the silver paste area.

15. The electronic paper display panel according to claim 14, characterized in that: The orthographic projection of the common electrode layer on the substrate covers the pixel area and the silver paste area; The connecting portion is provided with a silver paste via hole, and the silver paste is electrically connected to the common electrode layer through the silver paste via hole.

16. The electronic paper display panel according to claim 14, characterized in that: The edge of the retracted portion exceeds the edge of the main body portion in a first direction and is not flush, and the first direction is a direction from the pixel area to the silver paste area.

17. The electronic paper display panel according to claim 14, characterized in that: The electronic paper film comprises a special-shaped edge, wherein the special-shaped edge is located between two adjacent connecting portions, and the special-shaped edge is retracted relative to the connecting portion toward the pixel region.

18. The electronic paper display panel according to claim 17, characterized in that: In the case where the substrate includes a binding pin area, the orthographic projection of the irregular edge on the substrate has no overlap with the binding pin area, and the binding pin area is located on a side of the irregular edge away from the pixel area.

19. A display device, characterized in that: include: The electronic paper driving substrate according to any one of claims 1 to 11; and / or, The electronic paper display panel according to any one of claims 12 to 18.

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