Electronic paper driving substrate, display panel and display device
By setting chamfered edges and symmetrical design at the corners of the pixel area of the electronic paper driving substrate, the layout of the silver paste area is optimized, solving the problem of overall coordination and aesthetics caused by local irregular design, and achieving a higher screen ratio and better appearance.
Patent Information
- Application Number
- CN202520174657.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-26
AI Technical Summary
While existing electronic paper displays have improved screen-to-body ratio in their irregular designs, the overall coordination and aesthetics of the device are poor, especially for displays with single silver dots.
A chamfered edge is set at the corner of the pixel area on the electronic paper driving substrate, and the silver paste area is set close to the chamfered edge. By setting two chamfered edges symmetrical about the midpoint of the edge, and combining the transition structure and the conductive structure, the layout of the silver paste area is optimized.
It improves the overall product compatibility and aesthetics of electronic paper driver substrates, while reducing the bezel size and enhancing the aesthetics of the display area and screen-to-body ratio.
Smart Images
Figure CN223842294U_ABST
Abstract
Description
Technical Field
[0001] This 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 Technology
[0002] Currently, electronic paper displays are display products made using electrophoretic display technology. They achieve image display by applying driving voltages to each pixel through control circuits on a thin-film transistor (TFT) substrate. Due to their low power consumption, wide viewing angle, high contrast, and eye-friendly features, electronic paper displays are increasingly widely used in many fields such as electronic price tags, e-books, and billboards.
[0003] With the continuous development of electronic paper display technology, the screen-to-body ratio requirements for electronic paper displays are becoming increasingly stringent. To improve the screen-to-body ratio, the shape of the display area is often partially irregularly designed. However, while partially irregularly shaped display areas can improve the screen-to-body ratio to some extent, they can also affect the overall harmony and aesthetics of the display, especially for displays with single silver dots, where the irregularly shaped areas exhibit particularly poor visual harmony. Utility Model Content
[0004] This disclosure provides an electronic paper driving substrate, an electronic paper display panel, and a display device, which can balance the display screen ratio and improve the coordination of the display area shape.
[0005] The first aspect of this disclosure provides an electronic paper driving substrate, characterized in that it comprises:
[0006] Substrate;
[0007] A driving layer is disposed on one side of the substrate, and the driving layer includes a plurality of pixel electrodes;
[0008] The substrate includes a pixel region and a non-pixel region, the non-pixel region at least partially surrounding the pixel region, the pixel electrode being disposed in the pixel region, and the non-pixel region including a silver paste region;
[0009] The corner of the pixel region includes at least two chamfered edges, and there are two chamfered edges that are symmetrical about the midpoint of the diagonal of the pixel region, and / or there are two chamfered edges that are symmetrical about the midpoint of the edge between the two chamfered edges;
[0010] The silver paste area is located near the chamfered edge, and the silver paste area is used to apply the silver paste.
[0011] In some embodiments, the edges of the pixel regions connected to both sides of the chamfered edge are a first edge and a second edge, respectively. The extension lines of the same side of the first edge and the second edge form a virtual corner region with the chamfered edge, and the silver paste region overlaps with the virtual corner region.
[0012] In some embodiments, the ratio of the overlapping area of the silver-coated region and the virtual corner region to the area of the silver-coated region 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 area is provided with a conductive structure, which is used to electrically connect with the silver paste. 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 with a radius of curvature less than or equal to 10 mm, and the radius of curvature 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 the orthogonal projection of the transition structure onto the substrate surrounds the pixel region;
[0018] The silver paste region does not overlap with the orthographic projection of the transition structure on the substrate.
[0019] In some embodiments, the orthogonal projection of the transition structure onto the substrate covers the edge of the pixel region.
[0020] In some embodiments, the driving layer includes multiple conductive layers, and the driving layer includes a common signal line, multiple pixel circuits, multiple scan signal lines and multiple data signal lines. The scan signal lines and the data signal lines are all electrically connected to the pixel circuits, and the pixel circuits are electrically connected to the pixel electrodes.
[0021] A conductive structure is provided in the silver paste 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 lines and the data signal lines onto the substrate do not overlap with the orthographic projections of the conductive structure onto the substrate.
[0023] In some embodiments, the conductive structure includes multiple cutouts to make the conductive structure a patterned structure.
[0024] In some embodiments, the conductive structure includes a multi-ring structure and a plurality of connecting structures, wherein adjacent ring structures are connected by the connecting structures.
[0025] The annular structure is connected to the conductive layer disposed in the same layer through the connection structure.
[0026] In some embodiments, the connection structure is cross-shaped.
[0027] In some embodiments, the substrate includes a bonding pin region, the bonding pin region including a plurality of bonding pins;
[0028] The silver paste area is located on the side of the pixel area closer to the bonding pin area; and / or,
[0029] All four corners of the pixel area are chamfered edges.
[0030] A second aspect of this application provides an electronic paper display panel, comprising:
[0031] As described in the first aspect, electronic paper driving substrate;
[0032] An upper substrate is disposed on the side of the electronic paper driving substrate on which pixel electrodes are disposed. The upper substrate includes an electronic paper film, which includes a common electrode layer and a charged particle layer. The charged particle layer is disposed on the side of the common electrode layer close to the electronic paper driving substrate.
[0033] The silver paste area 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 disposed on the side of the electronic paper film away from the electronic paper driving substrate, and 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 onto the substrate covers the pixel area and the silver paste area of the electronic paper driving substrate.
[0037] In some embodiments, the electronic paper film includes a main body, a connecting portion, and a recessed portion, wherein the connecting portion is connected between the main body and the recessed 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 orthogonal projection of the common electrode layer onto the substrate covers the pixel region and the silver paste region;
[0039] The connecting part is provided with a silver paste through-hole, through which the silver paste is electrically connected to the common electrode layer.
[0040] In some embodiments, the edge of the recessed portion extends beyond the edge of the main body portion and is not flush with it in a first direction, wherein the first direction is the direction from the pixel region to the silver paste region.
[0041] In some embodiments, the electronic paper film includes an irregular edge located between two adjacent connecting portions, the irregular edge being recessed relative to the connecting portions toward the pixel region.
[0042] In some embodiments, where the substrate includes a bonding pin region, the orthographic projection of the irregular edge onto the substrate does not overlap with the bonding pin region, and the bonding pin region is located on the side of the irregular edge away from the pixel region.
[0043] A third aspect of this application provides a display device, characterized in that it comprises:
[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 this application embodiment features chamfered edges at the corners of the pixel areas. These chamfered edges enhance the overall adaptability and aesthetic appeal of the electronic paper driving substrate in the final product. The silver paste applied close to the chamfered edges reduces the display area occupied by the silver paste dots, thus minimizing the bezel. Furthermore, by creating two chamfered edges stacked around their midpoints and symmetrical about their diagonal midpoints, the aesthetic appeal of the display area with the chamfered edges and the bezel-reduction effect are further enhanced. Attached Figure Description
[0047] Figure 1 A schematic top view of an electronic paper display screen provided for an embodiment of this application;
[0048] Figure 2 A schematic partial cross-sectional view of an electronic paper driving substrate provided for an embodiment of this application;
[0049] Figure 3 A schematic top view of an electronic paper driving substrate provided for an embodiment of this application;
[0050] Figure 4A schematic top view of another electronic paper driving substrate provided in an embodiment of this application;
[0051] Figure 5 A schematic top view of yet another electronic paper driving substrate provided in an embodiment of this application;
[0052] Figure 6 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application;
[0053] Figure 7 A schematic top view of an electronic paper driving substrate provided for an embodiment of this application;
[0054] Figure 8 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application;
[0055] Figure 9 A schematic top view of yet another electronic paper driving substrate provided in an embodiment of this application;
[0056] Figure 10 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application;
[0057] Figure 11 A schematic partial top view of the chamfered edge corresponding to the silver paste area provided in an embodiment of this application;
[0058] Figure 12 A schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application;
[0059] Figure 13 A schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application;
[0060] Figure 14 A schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application;
[0061] Figure 15 A schematic partial top view of the chamfered edge corresponding to the silver paste area provided in an embodiment of this application;
[0062] Figure 16 A cross-sectional view of the chamfered edge region along ab provided in an embodiment of this application;
[0063] Figure 17 A schematic partial top view of a silver-coated area provided in an embodiment of this application;
[0064] Figure 18A schematic cross-sectional view of an electronic paper display panel provided for an embodiment of this application;
[0065] Figure 19 A schematic top view of an electronic paper display panel provided for an embodiment of this application;
[0066] Figure 20 A schematic top view of another electronic paper display panel provided in an embodiment of this application;
[0067] Figure 21 A display device is provided as an embodiment of this application. Detailed Implementation
[0068] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to 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 document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.
[0070] Electronic paper displays are display products made using electrophoretic display technology. They achieve image display by applying driving voltages to each pixel through control circuits on a thin-film transistor (TFT) substrate. Due to their low power consumption, wide viewing angle, high contrast, and eye-friendly features, electronic paper displays are increasingly widely used in electronic price tags, e-books, billboards, and many other fields. With the continuous development of electronic paper display technology, the screen-to-body ratio requirements for electronic paper displays are becoming increasingly stringent. The silver paste dots typically occupy a portion of the display area; to improve the screen-to-body ratio, the shape of the display area is often locally irregularly designed, allowing the display area to be partially reshaped.
[0071] The recessed or retracted areas are used to avoid the location of the silver dots. The irregular design of the local display area corresponding to the silver dots can prevent the bezel from being too wide due to the placement of the silver dots, thereby increasing the screen ratio.
[0072] Figure 1 This is a schematic top view of an electronic paper display screen provided as an embodiment of this application. For example, see reference... Figure 1 The non-display area NA surrounds the display area AA, and the silver paste dots Ag are set in the lower left corner of the display area AA. To avoid the silver paste dots Ag, the lower left corner of the display area AA is recessed, forming an irregular display area in the lower left corner. Figure 1 The dotted line shown represents the lower edge of the display area without the irregular shape being recessed. It can be seen that setting the lower left corner to avoid the irregular display area can reduce the size of the non-display area of the lower border, thus reducing the lower border size and increasing the screen ratio.
[0073] However, while partially irregular display areas can improve screen-to-body ratio to some extent, their design can negatively impact the overall harmony and aesthetics of the display device. This is especially true for displays with single-silver-dot displays, where the irregular areas exhibit particularly poor visual harmony. The poor overall harmony is primarily reflected in the limited compatibility of irregularly shaped displays with the device. For example, a particular model or size of e-paper display can be used in various device products, but irregularly shaped displays have a narrower application range.
[0074] In view of this, embodiments of this application provide an electronic paper driving substrate. Figure 2 A schematic partial cross-sectional view of an electronic paper driving substrate provided for an embodiment of this application; Figure 3 This is a schematic top view of an electronic paper driving substrate provided in an embodiment of this application.
[0075] For example, refer to 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 disposed on one side of the substrate 100 and includes a plurality of pixel electrodes 201. The substrate 100 includes a pixel region 110 and a non-pixel region 120. The non-pixel region 120 at least partially surrounds the pixel region 110. The pixel electrodes 201 are disposed in the pixel region 110. The non-pixel region 120 includes a silver paste region 121. The corners of the pixel region 110 include at least two chamfered edges 111. The silver paste region 121 is disposed near the chamfered edges 111 and is used to apply silver paste. The silver paste can be used to electrically connect the driving layer to the electronic paper film.
[0076] In some examples, reference Figure 3There are two chamfered edges 111 that are symmetrical about the midpoint 101 of the edge between the two chamfered edges 111.
[0077] Figure 4 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application. In some examples, reference is made to... Figure 4 There are two chamfered edges 111 that are symmetrical about the midpoint 102 of the diagonal of pixel region 110.
[0078] It should be noted that, Figure 3 and Figure 4 Each pixel area 110 has four chamfered edges 111, and the edge shape is regular.
[0079] By adding chamfered edges to the corners of the pixel areas on the electronic paper driver substrate, the overall adaptability and aesthetic appeal of the product can be improved. Placing the silver paste close to the chamfered edges reduces the display area occupied by the silver paste dots, thus effectively minimizing the bezel. Further enhancing the aesthetics of the display area and minimizing the bezel effect by creating two chamfered edges stacked around their midpoints and symmetrically positioned around their diagonal midpoints.
[0080] For example, the number of silver paste can be 1, 2, 3, 4 or more, that is, the number of silver paste areas can be set to 1, 2, 3, 4 or more. This application embodiment does not make specific limitations.
[0081] Figure 5 A schematic top view of yet another electronic paper driving substrate provided in an embodiment of this application. In some examples, reference is made to... 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 edges 111 are located on the lower side, and the right-angled edges 112 are located on the upper side. The silver paste area 121 is provided corresponding to the chamfered edges 111. The two chamfered edges 111 are symmetrical about the midpoint of the edge, which can also have the effect of aesthetics and reducing the bezel size.
[0082] Figure 6 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application. In some examples, reference is made to... 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 located at both ends of one diagonal, and the right-angled edges 112 are located at both ends of the other diagonal. The silver paste area 121 is provided corresponding to the chamfered edges 111. The two chamfered edges 111 are symmetrical about the midpoint 102 of the diagonal, which can also have the effect of aesthetics and reducing the bezel size.
[0083] In some examples, the chamfered edge can include a straight chamfer or a curved chamfer.
[0084] For example, the chamfered edge includes a curved chamfer with a radius of curvature less than or equal to 10 mm. The radius of curvature of the curved chamfer is positively correlated with the size of the electronic paper driving substrate. The larger the size of the electronic paper driving substrate, the larger the radius of curvature 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 area encroaching on the right-angled display area; that is, the larger the area of the original silver paste area encroaching on the right-angled display area, the greater the curvature of the curved chamfer.
[0086] For example, refer to Figures 3 to 6 The chamfered edge 111 is a curved chamfer, such as a rounded chamfer. Since corners occupy a larger area, the effect of reducing the border size is better.
[0087] Figure 7 This is a schematic top view of an electronic paper driving substrate provided for an embodiment of this application. In some examples, reference is made to... Figure 7 The chamfered edge 111 is a straight chamfer, and the chamfered shape can still reduce the border size and improve the aesthetics.
[0088] In some implementations, the edges of the pixel regions connected to both sides of the chamfer edge are the first edge and the second edge, respectively. The extension lines of the same side of the first edge and the second edge and the chamfer edge form a virtual corner region, and the silver paste region overlaps with the virtual corner region.
[0089] Figure 8 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application. (See attached image.) Figure 8 As shown, the extension lines of the same side of the first edge 103 and the second edge 104, together with the chamfered edge 111, form a virtual corner region 105.
[0090] For example, refer to Figure 8 The ratio of the overlapping area of the silver coating area 121 and the virtual corner area 105 to the area of the silver coating area 121 is greater than or equal to 20%, for example, it can be 50%, 80% or 90%, etc.
[0091] In some embodiments, the electronic paper driving substrate further includes a transition structure, the orthographic projection of which surrounds the pixel region on the substrate. The transition structure can serve as a transition between the display area and the non-display area, providing color transitions and acting as a color transition when a user views the dot-paper display panel.
[0092] For example, the transition structure can be made of a white material. An edge adhesive can be applied around the transition structure, which can serve as a sealing adhesive for the electronic paper driving substrate.
[0093] Figure 9 This is a schematic top view of yet another electronic paper driving substrate provided in an embodiment of this application. (See attached image.) Figure 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] For example, the orthographic projection of the transition structure 400 onto the substrate covers the edge of the pixel region 110. The transition structure 400 can serve as the edge of the pixel region 110.
[0095] For example, refer to Figure 9 The shape of the silver paste area 121 is a prototype, but it can also be elliptical.
[0096] Figure 10 A schematic top view of another electronic paper driving substrate provided in an embodiment of this application. (See attached image.) Figure 10 As shown, the shape of the silver paste region 121 is strip-shaped; the silver paste region 121 does not overlap with the orthographic projection of the transition structure 400 on the substrate.
[0097] In some implementations, reference Figure 9 and Figure 1 The substrate includes a bonding pin region, which includes a plurality of bonding pins; the bonding pin region may include a first bonding pin region 130 and a second bonding pin region 140, the first bonding pin region 130 may be used to bond and connect a driver chip, and the second bonding pin region 140 may be used to bond a flexible circuit board.
[0098] In some examples, reference Figure 9 and Figure 10 The silver paste area 121 is located on the side of the pixel area 120 close to the bonding pin area; the first bonding pin area 130 is located between the pixel area 110 and the second bonding pin area 140. The silver paste area is set close to the first bonding pin area 130. The silver paste area can be set using the border space of the bonding pin area, thereby reducing the width occupied by the silver paste on the border.
[0099] For example, refer to Figures 3 to 10 The shape of the silver paste region 121 shown can also be the shape of the silver paste, and the boundary of the silver paste region 121 can also be the boundary of the silver paste.
[0100] In some embodiments, the driving layer includes multiple conductive layers, comprising a common signal line, multiple pixel circuits, multiple scan signal lines, and multiple data signal lines. The scan signal lines and data signal lines are electrically connected to the pixel circuits, which are in turn electrically connected to the pixel electrodes. The pixel circuits can provide driving signals to each pixel electrode. The common signal line transmits a common signal, which is transmitted through pins in the silver paste area to the common electrode of the electronic paper film. The common electrode and the pixel electrodes can provide a driving electric field for the ink in the electronic paper film, thereby enabling the display function. The ink can be charged particles; these charged particles move under the drive of the electric field, creating a light-blocking and light-transmitting effect to achieve the display function.
[0101] In some examples, a conductive structure is disposed within the silver paste area, and the conductive structure is disposed in the same layer as at least one conductive layer. A common signal line is electrically connected to the conductive structure; the common signal line is disposed in the same layer as at least one conductive layer. The orthogonal projections of the scan signal lines and / or data signal lines on the substrate do not overlap with the orthogonal projections of the conductive structure on the substrate.
[0102] In some examples, the orthogonal projections of the scan signal lines and / or data signal lines onto the substrate do not overlap with the silver paste area.
[0103] Figure 11 This is a schematic partial top view of the chamfered edge corresponding to the silver paste area provided in an embodiment of this application. For example, refer to... Figure 11 The data signal line 410 provides a data signal to the pixel electrode 201, and the scan signal line 420 provides a scan signal to the pixel circuit, which may include a driving transistor. The scan signal is used to drive the switching state of the driving transistor. The data signal line 410 can extend in the column direction and can be arranged in the row direction. The scan signal line 420 can extend in the row direction and can be arranged in the column direction. The data signal line 410 and the scan signal line 420 can define a pixel area, and the pixel electrode is disposed within the pixel area. The pixel area can serve as the basic unit of display.
[0104] In some examples, the silver paste area is provided with a conductive structure for electrical connection with the silver paste, and the orthographic shape of the conductive structure on the substrate includes a circle, an ellipse or a strip.
[0105] In some examples, reference Figure 11 Both the data signal line 410 and the scan signal line 420 avoid the silver paste area 121, meaning that the orthogonal projections of the data signal line 410 and the scan signal line 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 onto the substrate do not overlap with the orthographic projections of the conductive structure onto the substrate. This avoids 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 the left and right sides to avoid the silver paste area 121. The scan signal line 420 surrounds the silver paste area 121 on the top and bottom sides to avoid the silver paste area 121.
[0108] Figure 12 A schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application. In some examples, refer to Figure 12 Some data signal lines 410 surround the silver paste area 121 on both sides to avoid it. Some scan signal lines 420 partially surround the silver paste area 121 above it to avoid it.
[0109] Figure 13 This is a schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application. In some examples, refer to... Figure 13 Some data signal lines 410 surround the silver paste region 121 on both sides to avoid it. The orthographic projection of some scan signal lines 420 on the substrate overlaps with that in the silver paste region 121. When the clearance between the scan signal lines 420 and the silver paste region 121 is insufficient, the scan signal lines 420 may overlap with the silver paste region 121.
[0110] Figure 14 This is a schematic partial top view of the chamfered edge corresponding to another silver paste area provided in an embodiment of this application. In some examples, refer to... Figure 14 Some scan signal lines 420 surround the silver paste region 121 on both the upper and lower sides to avoid it. Some data signal lines 410 have their orthogonal projections on the substrate overlapping with those in the silver paste region 121. When the space between the data signal lines 410 and the silver paste region 121 is insufficient, the data signal lines 410 may overlap with the silver paste region 121.
[0111] Figure 15 This is a schematic partial top view of the chamfered edge corresponding to a silver-painted area, provided as an embodiment of this application. In some examples, refer to... Figure 15 Some data signal lines 410 and some scan signal lines 420 partially surround the silver paste region 121 on the side near the transition structure 300.
[0112] Figure 16This is a cross-sectional view of the chamfered edge region along ab, provided in an embodiment of this 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 disposed on the pixel electrode layer 204. An electronic paper film 600 and a protective layer 700 are sequentially disposed on the side of the driving layer away from the substrate 100. The electronic paper film includes a charged particle layer 640 and a common electrode layer 500. The charged particle layer 640 is disposed on the side of the common electrode layer 500 near the electronic paper driving substrate. The first conductive layer 210 may be provided with a scan signal line 420 and the gate of a driving transistor, and the second conductive layer 220 may be provided with a data signal line 410 and the source / drain electrodes of the driving transistor. A conductive structure may be disposed in the first conductive layer 210 or the second conductive layer. The orthogonal projections of the scan signal line 420 and the data signal line 410 surrounding the silver paste region 121 on the substrate partially overlap.
[0113] In some embodiments, the conductive structure includes multiple cutouts to make the conductive structure a patterned structure. The conductive structure includes multiple ring structures and multiple connecting structures, with adjacent ring structures connected by connecting structures; the ring structures are connected to the conductive layers disposed in the same layer by connecting structures.
[0114] Figure 17 This is a schematic partial top view of a silver-painted area provided for an embodiment of this application. For example, refer to... Figure 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 perforation 214 is provided between the annular structure 212 and the connecting structure 213. Figure 17 The shown ring structure consists of three rings 212, which are connected by a connecting structure 213. The outermost ring structure 212 is connected to the conductive layer of the same layer via the connecting structure 213, and there is also a cutout 214 between the outermost ring structure 212 and the remaining first conductive layers 210. The outer boundary of the silver paste 122 can coincide with the cutout edge of the outermost ring. 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 paste. The orthographic projection of the common electrode layer 500 on the substrate covers the orthographic projection of the conductive structure 211 on the substrate to ensure the connection effect of the silver paste. The common signal on the common electrode layer 500 can form a driving electric field with the signal on the pixel electrode. The driving electric field can drive the ink particles of the electronic paper film to move to control the light transmission state of the pixel area, thereby realizing the display.
[0115] For example, refer to Figure 17The connecting structure 213 is cross-shaped.
[0116] The patterned conductive structure can ensure good conductivity and also serve as a marker for positioning. In the process of setting up silver paste, the positioning is carried out based on the patterned characteristics of the conductive structure.
[0117] Figure 18 This is a schematic cross-sectional view of an electronic paper display panel provided as an embodiment of this application. Figure 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 disposed on the side of the driving layer 200 away from the substrate 100. The upper substrate 800 is disposed on the side of the electronic paper driving substrate where pixel electrodes are disposed.
[0118] Figure 19 This is a schematic top view of an electronic paper display panel provided in an embodiment of this application. In some examples, reference is made to... Figure 16 and Figure 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 disposed on the 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 Figure 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 paste 122. The silver paste 122 is located on the side of the pixel area 110 near the first bonding pin area 130. The width of the border where the bonding pin is located can be used to accommodate the silver paste 122, thereby avoiding the silver paste area from occupying too much border width, thus achieving a narrow border.
[0120] In some embodiments, the electronic paper display panel further includes: a protective layer disposed on the 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 and the silver paste area of the electronic paper driving substrate.
[0121] For example, the protective layer can be a waterproof protective film, which can be transparent, and is attached to the upper side of the electronic paper film, mainly to prevent scratches on the electronic paper film and moisture from entering and corroding the electronic paper film.
[0122] For example, refer to Figure 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 paste 122 and the transition structure 300, and the protective layer 700 does not overlap with the orthographic projection of the first bonding pin region 130 and the second bonding pin region 140 on the substrate.
[0123] In some embodiments, the electronic paper film includes a main body and a connecting part, wherein 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.
[0124] Figure 20 A schematic top view of another electronic paper display panel provided in an embodiment of this application. Exemplary, see reference... Figure 20 The electronic paper film 600 includes a main body 610, a connecting part 620, and an inner recess 630. The connecting part 620 is connected between the main body 610 and the inner recess 630. The inner recess 630 is used to avoid the first bonding pin area 130. The connecting part 620 is used to cover the silver paste 122. In order to further reduce the impact of the silver paste 122 on the display area, the silver paste 122 can be moved down 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 paste 122, the electronic paper film 600 at the corresponding position of the silver paste 122 needs to be partially protruded outward, so that the lower boundary of the connecting part 620 and the inner recess 630 are not flush.
[0125] For example, taking a 2.13-inch display panel product as an example, the silver paste is moved down less, and the radius of curvature of the chamfered edge is adjusted from 9.5mm to 7.6mm.
[0126] For example, refer to Figure 20 The boundary of the protective layer 700 corresponds to the boundary of the electronic paper film 600. The protective layer 700 includes a main boundary 710, a connecting boundary 720 and an inner boundary 730. The main boundary 710 surrounds the main body 610, the connecting boundary 720 surrounds the connecting part 620, and the inner boundary 730 surrounds the inner part 630.
[0127] In some examples, reference Figure 20 The edge of the connecting portion 620 extends beyond the edge of the recessed portion 630 in a first direction and is not flush with it. The first direction is the direction from the pixel region 110 to the silver paste region. The first direction is also the direction from the pixel region 110 to the pin 122.
[0128] In some examples, the electronic paper film includes irregular edges located between two adjacent connecting portions, and the irregular edges are the edges of the recessed portion 630, which are recessed toward the pixel region 110 relative to the connecting portion 620.
[0129] In some examples, where the substrate includes a bonding pin region, the orthographic projection of the irregular edge onto the substrate does not overlap with the bonding pin region, and the bonding pin region is located on the side of the irregular edge away from the pixel region.
[0130] In some embodiments, the orthogonal projection of the common electrode layer onto the substrate covers both the pixel region and the silver paste region; the common electrode layer is covered with silver paste.
[0131] In some examples, the connection portion is provided with silver paste vias, through which the silver paste is electrically connected to the common electrode layer.
[0132] The electronic paper display panel provided in this application embodiment features chamfered edges at the corners of the pixel areas of the electronic paper driving substrate. These chamfered edges enhance the overall adaptability and aesthetic appeal of the electronic paper driving substrate product. The silver paste placed close to the chamfered edges reduces the display area occupied by the silver paste dots, thus minimizing the bezel. Furthermore, by creating two chamfered edges stacked about the midpoint of the edges, and making them symmetrical about the midpoint of the diagonals, the aesthetic appeal of the display area with the chamfered edges and the bezel-reduction effect are further enhanced.
[0133] In some embodiments, a display device is provided. Figure 21 A display device is provided as an embodiment of this application. (See reference...) Figure 21 The display device includes an electronic paper driving substrate 1000 as described in any of the above embodiments.
[0134] In some embodiments, 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 this application embodiment improves the adaptability and aesthetics of the entire electronic paper driving substrate by setting chamfered edges at the corners of the pixel areas. The silver paste placed close to the chamfered edges reduces the display area occupied by the silver paste dots, thus reducing the bezel size. Furthermore, by setting two chamfered edges stacked about the midpoint of the edges, and making the two chamfered edges symmetrical about the midpoint of the diagonals, the aesthetics of the display area with the chamfered edges and the effect of reducing the bezel size are further enhanced.
[0136] It should be noted that the display devices provided in this disclosure may include smartphones, tablets, laptops, televisions, and smart wearable display devices, etc. Smart wearable display devices may include smartwatches, VR (augmented reality) displays, and AR (virtual reality) displays, etc. The embodiments of this disclosure are not specifically limited.
[0137] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.
[0138] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.
[0139] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.
Claims
1. An electronic paper driving substrate, characterized in that, include: Substrate; A driving layer is disposed on one side of the substrate, and the driving layer includes a plurality of pixel electrodes; The substrate includes a pixel region and a non-pixel region, the non-pixel region at least partially surrounding the pixel region, the pixel electrode being disposed in the pixel region, and the non-pixel region including a silver paste region; The corner of the pixel region includes at least two chamfered edges, and there are two chamfered edges that are symmetrical about the midpoint of the diagonal of the pixel region, and / or there are two chamfered edges that are symmetrical about the midpoint of the edge between the two chamfered edges; The silver paste area is located near the chamfered edge, and the silver paste area is used to apply the silver paste.
2. The electronic paper driving substrate according to claim 1, characterized in that, The edges of the pixel regions connected to both sides of the chamfered edge are the first edge and the second edge, respectively. The extension lines of the same side of the first edge and the second edge form a virtual corner region with the chamfered edge. The silver paste region overlaps with the virtual corner region.
3. The electronic paper driving substrate according to claim 2, characterized in that, The ratio of the overlapping area of the silver-coated area and the virtual corner area to the area of the silver-coated 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 area is provided with a conductive structure, which is used to electrically connect with the silver paste. 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 with a radius of curvature less than or equal to 10 mm, and the radius of curvature 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 the orthogonal projection of the transition structure onto the substrate surrounds the pixel region; The silver paste region does not 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 orthogonal projection of the transition structure onto the substrate covers the edge of the pixel region.
7. The electronic paper driving substrate according to claim 1, characterized in that, The driving layer includes multiple conductive layers, and includes a common signal line, multiple pixel circuits, multiple scan signal lines, and multiple data signal lines. The scan 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. A conductive structure is provided in the silver paste 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 lines and the data signal lines onto the substrate do not overlap with the orthographic projections of the conductive structure onto the substrate.
8. The electronic paper driving substrate according to claim 7, characterized in that, The conductive structure includes multiple cutouts to make it a patterned structure.
9. The electronic paper driving substrate according to claim 7, characterized in that, The conductive structure includes a multi-ring structure and a plurality of connecting structures, with adjacent ring structures connected by the connecting structures; The annular structure is connected to the conductive layer disposed in the same layer through the connection structure.
10. The electronic paper driving substrate according to claim 9, characterized in that, The connection structure is cross-shaped.
11. The electronic paper driving substrate according to claim 1, characterized in that, The substrate includes a bonding pin region, which includes a plurality of bonding pins; The silver paste area is located on the side of the pixel area closer to the bonding pin area; and / or, All four corners of the pixel area are chamfered edges.
12. An electronic paper display panel, characterized in that, include: Electronic paper driving substrate as described in any one of claims 1 to 11; An upper substrate is disposed on the side of the electronic paper driving substrate on which pixel electrodes are disposed. The upper substrate includes an electronic paper film, which includes a common electrode layer and a charged particle layer. The charged particle layer is disposed on the side of the common electrode layer close to the electronic paper driving substrate. The silver paste area 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 disposed on the side of the electronic paper film away from the electronic paper driving substrate, and 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 onto the substrate covers the pixel area and the silver paste area of the electronic paper driving substrate.
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 an inwardly recessed part. The connecting part is connected between the main body and the inwardly recessed 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 orthogonal projection of the common electrode layer onto the substrate covers the pixel region and the silver paste region; The connecting part is provided with a silver paste through-hole, through which the silver paste is electrically connected to the common electrode layer.
16. The electronic paper display panel according to claim 14, characterized in that, The edge of the recessed portion extends beyond the edge of the main body portion and is not flush with it in a first direction, where the first direction is the direction from the pixel region to the silver paste region.
17. The electronic paper display panel according to claim 14, characterized in that, The electronic paper film includes an irregular edge located between two adjacent connecting portions, and the irregular edge is recessed relative to the connecting portion toward the pixel region.
18. The electronic paper display panel according to claim 17, characterized in that, When the substrate includes a bonding pin region, the orthographic projection of the irregular edge on the substrate does not overlap with the bonding pin region, and the bonding pin region is located on the side of the irregular edge away from the pixel region.
19. A display device, characterized in that, include: Electronic paper driving substrate as described in any one of claims 1 to 11; And / or, The electronic paper display panel as described in any one of claims 12 to 18.