Display panel and display device

Abstract

Disclosed in the embodiments of the present invention are a display panel and a display device. A panel main body of the display panel is provided with a main body part, a bending part and a binding part, wherein the bending part is connected to the main body part, and edge sub-parts of the bending part are located at two ends of the bending part and on the side of the bending part close to the main body part. The panel main body comprises a first inorganic layer, a first organic layer and a second inorganic layer, wherein within the edge sub-parts, the first organic layer is spaced between the first inorganic layer and the second inorganic layer, or, the second inorganic layer is located outside the edge sub-parts.

Description

Display panel and display device Technical Field

[0001] The present application relates to the field of display, and in particular to a display panel and a display device. Background Art

[0002] Currently, the panel body of a display panel is cut and separated on a motherboard and then further cut according to the appearance requirements of different products. During the cutting process, cracks are easily generated at the edge of the panel body. In curved products, in order to facilitate the bending of the bent portion of the panel body, the edge of the bent portion of the panel body is arc-cut to form an L-shaped cut (L-Cut). The L-shaped cut part is warped, causing the edge of the L-shaped cut of the bent portion of the panel body to be more prone to stress concentration. The cracks generated during cutting extend to the routing area within the bent portion of the panel body, affecting the product quality of the display panel.

[0003] Therefore, a display panel and a display device are urgently needed to solve the above technical problems. SUMMARY OF THE INVENTION

[0004] The present invention provides a display panel that can alleviate the technical problem that the cutting cracks caused by stress concentration in the L-shaped cutout portion of the bent portion of the current panel body extend to the wiring area within the bent portion, thereby affecting the product quality of the display panel.

[0005] To solve the above problems, the technical solutions provided by this application are as follows:

[0006] The present invention provides a display panel, comprising a panel body, the panel body having a main body portion, a binding portion located on a backlight side of the main body portion, and a bent portion connected between the main body portion and the binding portion, the bent portion being connected to a first side of the main body portion, the bent portion including an edge sub-portion, the edge sub-portion being located at both ends of the bent portion in a first direction and being located on a side of the bent portion closer to the main body portion, the first direction being parallel to an extension direction of the first side of the main body portion, the panel body comprising:

[0007] a substrate, located at the main body, the bending portion, and the binding portion;

[0008] a first inorganic layer, located on one side of the substrate;

[0009] a second inorganic layer, located on a side of the first inorganic layer away from the substrate;

[0010] a first organic layer, located between the first inorganic layer and the second inorganic layer;

[0011] Wherein, in the edge sub-portion, the first organic layer is spaced between the first inorganic layer and the second inorganic layer; or,

[0012] The second inorganic layer is located outside the edge sub-portion, and the second inorganic layer is located between two edge sub-portions in the first direction.

[0013] The present invention further provides a display device, comprising a display panel, the display panel comprising a panel body, the panel body comprising a main body portion, a binding portion located on a backlight side of the main body portion, and a bent portion connected between the main body portion and the binding portion, the bent portion being connected to a first side of the main body portion, the bent portion comprising an edge sub-portion, the edge sub-portion being located at both ends of the bent portion in a first direction and being located on a side of the bent portion close to the main body portion, the first direction being parallel to an extension direction of the first side of the main body portion, the panel body comprising:

[0014] a substrate, located at the main body, the bending portion, and the binding portion;

[0015] a first inorganic layer, located on one side of the substrate;

[0016] a second inorganic layer, located on a side of the first inorganic layer away from the substrate;

[0017] a first organic layer, located between the first inorganic layer and the second inorganic layer;

[0018] Wherein, in the edge sub-portion, the first organic layer is spaced between the first inorganic layer and the second inorganic layer; or,

[0019] The second inorganic layer is located outside the edge sub-portion, and the second inorganic layer is located between two edge sub-portions in the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a microscopic top view of an edge sub-portion of a display panel in the prior art;

[0021] FIG2 is a schematic diagram of a slice structure of an edge sub-portion of a display panel in the prior art;

[0022] FIG3 is a schematic diagram of a first structure of a display panel provided by an embodiment of the present invention;

[0023] FIG4 is a schematic structural diagram of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0024] FIG5 is a schematic diagram of a second structure of a display panel provided by an embodiment of the present invention;

[0025] 6 is a schematic diagram of a first structural example of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0026] 7 is a schematic diagram of a second structure of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0027] FIG8 is a schematic diagram of a third structure of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0028] 9 is a schematic diagram of a fourth structure of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0029] 10 is a schematic diagram of a fifth structure of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0030] 11 is a sixth structural schematic diagram of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0031] 12 is a schematic diagram of a seventh structure of an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0032] FIG13 is a schematic diagram of a first structure of a bent portion of a display panel provided by an embodiment of the present invention;

[0033] 14 is a schematic structural diagram of a first groove and a second groove in an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0034] FIG15 is a schematic diagram of a second structure of a bent portion of a display panel provided by an embodiment of the present invention;

[0035] FIG16 is a schematic structural diagram of a first groove in an edge sub-portion of a display panel provided by an embodiment of the present invention;

[0036] FIG17 is a schematic structural diagram of a protective layer of a display panel provided in an embodiment of the present invention;

[0037] FIG18 is a schematic structural diagram of a display device provided in an embodiment of the present invention. Modes for Carrying Out the Invention

[0038] The present application provides a display panel and a display device. To make the purpose, technical solution, and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0039] Currently, the edge of the bent portion of the panel body is warped, which makes it easier for stress to concentrate at the edge of the bent portion. As shown in Figures 1 and 2, the first inorganic layer 106' and the second inorganic layer 107' in the edge sub-portion (the edge of the bent portion of the panel body is cut into an L-shaped incision through an arc), are in direct contact. The thickness of the inorganic layer formed by directly superimposing the first inorganic layer 106' and the second inorganic layer 107' reaches 1.8 microns to 2.2 microns. The thickness is too thick and cracks are easily generated under the action of stress, which causes the cracks generated during cutting to extend to the routing area in the bent portion (such as: extending to the crack detection line), affecting the product quality of the display panel. Technical problems.

[0040] Please refer to Figures 3 to 14. An embodiment of the present invention provides a display panel 10, which includes a panel body 100. The panel body 100 has a main body 101, a binding portion 102 located on the backlight side of the main body 101, and a bending portion 103 connected between the main body 101 and the binding portion 102. The bending portion 103 is connected to a first side of the main body 101. The bending portion 103 includes an edge sub-portion 104. The edge sub-portion 104 is located at both ends of the bending portion 103 in a first direction X and the edge sub-portion 104 is located on a side of the bending portion 103 close to the main body 101. The first direction X is parallel to the extension direction of the first side of the main body 101.

[0041] Referring to Figures 3 and 4 , in the first direction X, the main body 101 has a first width, and the side of the bent portion 103 proximate to the main body 101 has a second width, with the first width being greater than the second width. To achieve a width variation between the first width of the first side of the main body 101 and the second width of the side of the bent portion 103 proximate to the main body 101, the edge of the bent portion 103 proximate to the main body 101 is cut to form an L-shaped cutout portion, which serves as the edge sub-portion 104.

[0042] 3 , the bending portion 103 includes the edge sub-portion 104 and the routing sub-portion 109 . The routing sub-portion 109 is located between the two edge sub-portions 104 in the first direction X. That is, the edge sub-portion 104 is located on both sides of the routing sub-portion 109 in the first direction X.

[0043] The panel body 100 includes:

[0044] The substrate 105 is located on the main body 101, the bending portion 103 and the binding portion 102;

[0045] A first inorganic layer 106 is located on one side of the substrate 105;

[0046] a second inorganic layer 107 , located on a side of the first inorganic layer 106 away from the substrate 105 ;

[0047] A first organic layer 108 is located between the first inorganic layer 106 and the second inorganic layer 107;

[0048] Wherein, in the edge sub-portion 104 , the first organic layer 108 is spaced between the first inorganic layer 106 and the second inorganic layer 107 ; or,

[0049] The second inorganic layer 107 is located outside the edge sub-portion 104 , and the second inorganic layer 107 is located between two edge sub-portions 104 in the first direction.

[0050] In an embodiment of the present invention, the first organic layer 108 is separated between the first inorganic layer 106 and the second inorganic layer 107 in the edge sub-portion 104, or the second inorganic layer 107 is arranged away from the edge sub-portion 104, so as to avoid the first inorganic layer 106 and the second inorganic layer 107 from contacting each other in the edge sub-portion 104, causing the thickness of the inorganic layer formed by the direct superposition of the two to be too thick, thereby reducing the occurrence of cracks and improving the product quality of the display panel.

[0051] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0052] 5 , in this embodiment, the backlight side of the main body 101 is the side away from the light-emitting side of the main body 101. The bent portion 103 is connected to the first side of the main body 101. Within the bent portion 103, the first organic layer 108 is located between the first inorganic layer 106 and the second inorganic layer 107.

[0053] In some embodiments, the first inorganic layer 106 is located at least in the main portion 101 and the bending portion 103 . In the bending portion 103 , the first inorganic layer 106 is located in the routing sub-portion 109 and the edge sub-portion 104 .

[0054] In some embodiments, the second inorganic layer 107 is located at least in the main body 101 and the bending portion 103. In the bending portion 103, the second inorganic layer 107 is located at least in the routing sub-portion 109.

[0055] In some embodiments, the first organic layer 108 is located at least in the main body 101 and the bending portion 103 . In the bending portion 103 , the first organic layer 108 is located at least in the routing sub-portion 109 .

[0056] Referring to Figures 6 to 9, in some embodiments, the first inorganic layer 106 includes a first subsegment 110 located in the edge sub-portion 104. When the second inorganic layer 107 is located in the routing sub-portion 109 and the edge sub-portion 104, the second inorganic layer 107 includes a second subsegment 111 located in the edge sub-portion 104, and the first organic layer 108 includes a first organic subsegment 112 located in the edge sub-portion 104. The first organic subsegment 112 is spaced between the first subsegment 110 and the second subsegment 111, which helps to separate the first inorganic layer 106 and the second inorganic layer 107 in the edge sub-portion 104, avoiding contact between the first inorganic layer 106 and the second inorganic layer 107, which may cause the thickness of the inorganic layer formed by the direct superposition of the two to be too thick, thereby reducing the generation of cracks and improving the product quality of the display panel 10.

[0057] Referring to Figures 10 and 12 , in some embodiments, the bending portion 103 further includes a cutting sub-portion 122. The cutting sub-portion 122 is located on a side of the edge sub-portion 104 of the bending portion 103 away from the routing sub-portion 109 of the bending portion 103. The substrate 105 and the first inorganic layer 106 are located within the cutting sub-portion 122. The cutting sub-portion 122 is the portion remaining after the panel body 100 is cut.

[0058] In some embodiments, the cutting sub-portion 122 includes only the substrate 105 and the first inorganic layer 106 .

[0059] Referring to the edge sub-portion 104 shown in Figures 6 to 11, in some embodiments, the first inorganic layer 106 has a first end surface located within the edge sub-portion 104 in the direction from the edge sub-portion 104 to the routing sub-portion 109, and the second inorganic layer 107 has a second end surface located within the edge sub-portion 104 in the direction from the edge sub-portion 104 to the routing sub-portion 109. The second end surface of the second inorganic layer 107 is located between the first end surface of the first inorganic layer 106 and the routing sub-portion 109 in the direction from the edge sub-portion 104 to the routing sub-portion 109. By arranging the second end surface of the second inorganic layer 107 closer to the routing sub-portion 109 than the first end surface, the inorganic layer of the bending portion 103 is reduced in proximity to the cutting sub-portion, which helps to reduce the generation of cracks and improve the product quality of the display panel 10.

[0060] Referring to Figures 6 to 11 , in some embodiments, the edge sub-portion 104 includes a first region 113 along the direction from the edge sub-portion 104 to the routing sub-portion 109. The first sub-segment 110 includes at least one first groove 118. The first groove 118 is located within the first region 113 of the edge sub-portion 104 and extends along a second direction parallel to the direction of extension of the edge sub-portion 104 away from the routing sub-portion 109. The provision of the first groove 118 reduces the thickness of the first sub-portion 110 to avoid stress concentration while also preventing cracks generated by cutting from extending toward the routing sub-portion 109 in the first direction X, thereby improving the product quality of the display panel 10.

[0061] Please refer to Figures 6 to 11, 13 and 15. In some embodiments, within the first area 113, multiple first grooves 118 are arranged in sequence along the direction from the edge sub-portion 104 to the wiring sub-portion 109, which is beneficial to fully prevent cracks generated by cutting from extending toward the wiring sub-portion 109, thereby improving the product quality of the display panel 10.

[0062] Referring to Figures 13 and 15 , in some embodiments, the width of the first groove 118 disposed near the edge of the bending portion 103 in the direction from the edge sub-portion 104 to the wiring sub-portion 109 is smaller than the width of the first groove 118 disposed near the wiring sub-portion 109. The width of the first groove 118 is the average value of the distance between opposite sides of the first groove 118 in the direction from the edge sub-portion 104 to the wiring sub-portion 109. By making the width of the first groove 118 disposed near the edge of the bending portion 103 smaller, it is advantageous to provide more first grooves 118 within the same width in the direction from the edge sub-portion 104 to the wiring sub-portion 109, thereby enhancing the blocking effect of the first groove 118 on cracks generated during cutting and improving the product quality of the display panel 10.

[0063] In some embodiments, in a direction from the edge sub-portion 104 to the routing sub-portion 109 , the width of the first groove 118 gradually increases along the direction from the edge sub-portion 104 to the routing sub-portion 109 .

[0064] Please refer to Figures 13 and 15. In some embodiments, in the direction from the edge sub-section 104 to the wiring sub-section 109, the spacing between the first grooves 118 set near the edge of the bending portion 103 is smaller than the spacing between the first grooves 118 set near the wiring sub-section 109. This is beneficial for providing more first grooves 118 within the same width in the direction from the edge sub-section 104 to the wiring sub-section 109, thereby enhancing the blocking effect of the first grooves 118 on cracks generated during cutting, thereby improving the product quality of the display panel 10.

[0065] In some embodiments, in a direction from the edge sub-portion 104 to the routing sub-portion 109 , the intervals between the first grooves 118 gradually increase along the direction from the edge sub-portion 104 to the routing sub-portion 109 .

[0066] In some embodiments, the first grooves 118 are provided through-goingly in the direction of the side of the edge sub-portion 104 close to the main body portion 101 and the side of the edge sub-portion 104 close to the binding portion 102, that is, each of the first grooves 118 is a through groove, which is beneficial for fully blocking the cracks generated by cutting from extending toward the wiring sub-portion 109 in the direction from the edge sub-portion 104 to the wiring sub-portion 109, thereby improving the product quality of the display panel 10.

[0067] Referring to FIG. 6 , FIG. 15 and FIG. 16 , in some embodiments, the edge sub-portion 104 only includes the first region 113 .

[0068] 7, 9 to 12, in some embodiments, along the direction from the edge sub-portion 104 to the routing sub-portion 109, the edge sub-portion 104 further includes a second region 114 located on a side of the first region 113 close to the routing sub-portion 109. The first groove 118 is located outside the second region 114, that is, the first groove 118 is not present in the second region 114.

[0069] Referring to Figures 8 to 14 , in some embodiments, along the direction from the edge sub-portion 104 to the routing sub-portion 109, the edge sub-portion 104 further includes a third region 115 located on a side of the first region 113 proximal to the routing sub-portion 109. The first sub-segment 110 further includes a plurality of second grooves 119 located within the third region 115. The second grooves 119 extend along the direction from the edge sub-portion 104 to the routing sub-portion 109, with the plurality of second grooves 119 arranged sequentially along the second direction. The provision of the second grooves 119 helps prevent cracks caused by cutting in the second direction, thereby improving the product quality of the display panel 10.

[0070] 8 to 14 , in some embodiments, the second groove 119 is located only in the third region 115 . That is, the second groove 119 is located outside the second region 114 , that is, there is no second groove 119 in the second region 114 .

[0071] Please refer to FIG. 7 to FIG. 9 . In some embodiments, the first sub-segment 110 is located in the first area 113 , and the second sub-segment 111 is located in the first area 113 .

[0072] In some embodiments, the first sub-segment 110 is located in the first region 113 and the second region 114 , and the second end surface of the second inorganic layer 107 is located in the second region 114 .

[0073] In some embodiments, the first sub-segment 110 is located in the first region 113 and the third region 115 , and the second end surface of the second inorganic layer 107 is located in the third region 115 .

[0074] In some embodiments, referring to Figure 10, the first sub-segment 110 is located in the first zone 113, the second zone 114 and the third zone 115, the second sub-segment 111 is located in the second zone 114 and the third zone 115, and the second end face of the second inorganic layer 107 is located in the second zone 114; or, referring to Figure 11, the first sub-segment 110 is located in the first zone 113, the second zone 114 and the third zone 115, and the second sub-segment 111 is only located in the third zone 115, that is, the second end face of the second inorganic layer 107 is located in the third zone 115.

[0075] Referring to Figures 6 to 9, in some embodiments, the orthographic projection of the second end surface of the second inorganic layer 107 on the first subsegment 110 is at least partially located within the first groove 118. For example, when the first groove 118 is a through groove, the orthographic projection of the second end surface of the second inorganic layer 107 on the first subsegment 110 is located within the first groove 118. The arrangement of the second end surface of the second inorganic layer 107 being located within the first groove 118 facilitates reducing the total thickness of the first inorganic layer 106 and the second inorganic layer 107 at the end near the cutting area, reduces the occurrence of cracks, and improves the product quality of the display panel 10. When the first subsegment 110 includes multiple first grooves 118 and the second end surface of the second inorganic layer 107 is at least partially located within the first groove 118, the orthographic projection of the second end surface of the second inorganic layer 107 on the first subsegment 110 is located within the first groove 118 farthest from the routing sub-portion 109.

[0076] Please refer to Figures 6 to 11. In some embodiments, the first organic layer 108 includes a first organic sub-segment 112 located in the edge sub-portion 104. The first organic sub-segment 112 is spaced between the first sub-segment 110 and the second sub-segment 111, which is beneficial for separating the first inorganic layer 106 and the second inorganic layer 107 in the edge sub-portion 104, avoiding contact between the first inorganic layer 106 and the second inorganic layer 107, causing the thickness of the inorganic layer formed by direct superposition of the two to be too thick, thereby reducing the generation of cracks and improving the product quality of the display panel 10.

[0077] Referring to Figures 6 to 11 , in some embodiments, the first organic sub-segment 112 may be located within the first region 113, or within the first region 113 and the second region 114, or within the first region 113 and the third region 115, or within the first region 113, the second region 114, and the third region 115. The first organic sub-segment 112 has a third end surface located within the edge sub-portion 104 in the direction from the edge sub-portion 104 to the routing sub-portion 109. To space the first sub-segment 110 from the second sub-segment 111, the third end surface of the first organic sub-segment 112 is located on a side of the second end surface of the second inorganic layer 107 away from the routing sub-portion 109. Alternatively, the orthographic projection of the third end surface of the first organic sub-segment 112 on the substrate at least partially overlaps with the orthographic projection of the second end surface of the second inorganic layer 107 on the substrate. Preferably, the first organic sub-segment 112 may not cover at least a portion of the first sub-segment 110 located in the first zone 113 near the cutting sub-portion 122, which is beneficial to reducing the number of film layers near the cutting sub-portion 122, thereby reducing the total thickness of the film layers near the cutting sub-portion 122 of the edge sub-portion 104, reducing the generation of cracks, and improving the product quality of the display panel 10. For example, when the edge sub-portion 104 includes the first region 113, the third end face of the first organic sub-segment 112 is located in the first region 113 and between the side edge of the edge sub-portion 104 close to the cutting sub-portion 122 and the second end face of the second inorganic layer 107; when the edge sub-portion 104 includes the first region 113 and the second region 114, the third end face of the first organic sub-segment 112 is located in the second region 114; when the edge sub-portion 104 includes the first region 113 and the third region 115, the third end face of the first organic sub-segment 112 is located in the third region 115; when the edge sub-portion 104 includes the first region 113, the second region 114 and the third region 115, the third end face of the first organic sub-segment 112 is located in the second region 114 or in the third region 115.

[0078] Please refer to Figures 6 to 12. In some embodiments, the orthographic projection of the second sub-segment 111 on the first organic sub-segment 112 coincides with the first organic sub-segment 112, or the orthographic projection of the second sub-segment 111 on the first organic sub-segment 112 is located within the first organic sub-segment 112, so that the first organic sub-segment 112 sufficiently separates the first sub-segment 110 from the second sub-segment 111, which is beneficial to reducing the generation of cracks and improving the product quality of the display panel 10.

[0079] Referring to Figures 6 to 11 , in some embodiments, the panel body 100 further includes a second organic layer 116, which is located on a side of the second inorganic layer 107 away from the substrate 105. The second organic layer 116 includes a second organic subsegment 117 located in the edge sub-portion 104. The second organic subsegment 117 at least contacts and covers the second subsegment 111. The provision of the second organic layer 116 facilitates planarizing the surface of the edge sub-portion 104 away from the substrate 105, enhancing the flexibility of the edge sub-portion 104, and protecting the second inorganic layer 107, thereby reducing crack formation and improving the product quality of the display panel 10.

[0080] 6 and 11 , in some embodiments, when the first organic sub-segment 112 does not cover a portion of the first sub-segment 110 adjacent to the cut sub-portion, that is, when the first organic sub-segment 112 exposes a portion of the first sub-segment 110, the second organic sub-segment 117 covers the second sub-segment 111 and the exposed portion of the first sub-segment 110, thereby protecting the first sub-segment 110 and reducing crack formation, thereby improving the product quality of the display panel 10. The orthographic projection of the second organic sub-segment 117 on the substrate can overlap with the substrate within the edge sub-portion 104. Specifically, when the edge sub-portion 104 includes the first zone 113, the second organic sub-segment 117 is located in the first zone 113; when the edge sub-portion 104 includes the first zone 113 and the second zone 114, the second organic sub-segment 117 is located in the first zone 113 and the second zone 114; when the edge sub-portion 104 includes the first zone 113, the second zone 114 and the third zone 115, the second organic sub-segment 117 is located in the first zone 113, the second zone 114 and the third zone 115.

[0081] Please refer to Figure 12. In some embodiments, within the bending portion 103, the first inorganic layer 106 is located in the routing sub-portion 109 and the edge sub-portion 104, and the second inorganic layer 107 is only located in the routing sub-portion 109. The arrangement of the second inorganic layer 107 avoiding the edge sub-portion 104 is beneficial to reducing the total thickness of the inorganic layer in the edge sub-portion 104, reducing the generation of cracks, and improving the product quality of the display panel 10.

[0082] Referring to Figures 13 and 15 , in some embodiments, the panel body 100 includes a first type of trace 120 and a second type of trace 121. The first type of trace 120 includes a first trace segment located within the main body 101 and a second trace segment located within the trace sub-section 109. The second type of trace 121 includes a third trace segment located within the main body 101 and a fourth trace segment located within the trace sub-section 109. The main body 101 includes a display area and a non-display area surrounding the display area. The first trace segment is located within the non-display area and is located on at least one side of the display area in the first direction X. The first type of trace 120 may be a gate drive line. The second type of trace 121 is located within the non-display area. The third trace segment is located on the side of the first trace segment away from the display area, and the fourth trace segment is located on the side of the second trace segment closer to the edge sub-section 104.

[0083] Referring to Figure 12, in some embodiments, within the bend portion 103, when the second inorganic layer 107 is located only in the routing sub-portion 109, the orthographic projection of the second inorganic layer 107 on the substrate 105 overlaps the orthographic projection of the second-type routing 121 on the substrate 105. In the direction from the edge sub-portion 104 to the routing sub-portion 109, the distance between the orthographic projection of the second end surface of the second inorganic layer 107 on the substrate and the orthographic projection of the second-type routing 121 on the substrate 105 is greater than or equal to 100 microns and less than or equal to 200 microns.

[0084] In some embodiments, the panel body 100 includes a thin film transistor layer located between the substrate 105 and the first organic layer 108, the thin film transistor layer includes a gate layer, a source and drain layer located on the side of the gate layer away from the substrate 105, and the first inorganic layer 106, the first inorganic layer 106 includes a first inorganic sublayer and a second inorganic sublayer, the first inorganic sublayer is located between the gate layer and the source and drain layer, and the second inorganic sublayer is located between the source and drain layer and the first organic layer 108.

[0085] In some embodiments, the substrate 105 may be a flexible substrate, such as a polyimide substrate. When the substrate 105 is a flexible substrate, the substrate 105 includes a first flexible sub-substrate, an intermediate layer, an adhesive layer, and a second flexible sub-substrate. The first flexible sub-substrate and the second flexible sub-substrate may be formed of the same material, such as polyimide. The intermediate layer may be formed of an inorganic material including, for example, at least one of SiOx and SiNx. The adhesive layer may be formed of hydrogenated amorphous silicon (a-Si:H).

[0086] In some embodiments, the panel body 100 further includes a buffer layer located between the substrate 105 and the thin film transistor layer, and the buffer layer may include one or more inorganic insulating layers, the inorganic insulating layer including materials such as silicon oxide or silicon nitride. The buffer layer may provide a planarization layer on the upper surface of the substrate 105 and may block or prevent impurities and moisture from penetrating from the substrate 105 into the light-emitting layer. Specifically, the buffer layer includes a first sub-buffer layer formed of, for example, silicon nitride and a second sub-buffer layer formed of, for example, silicon oxide. The second sub-buffer layer and the first sub-buffer layer may be formed of silicon nitride having the same film quality (e.g., the same density and the same film stress), and an oxide film may be positioned at the interface between the second sub-buffer layer and the first sub-buffer layer. In practical applications, the thickness of the first sub-buffer layer may be 50 nm to 100 nm, and the thickness of the second sub-buffer layer may be approximately 100 nm to 300 nm.

[0087] In some embodiments, the thin film transistor layer further comprises a semiconductor layer located on a side of the buffer layer away from the substrate 105, wherein the semiconductor layer comprises a semiconductor, which may be formed of polycrystalline silicon. The semiconductor is divided into a channel region and a source region and a drain region formed on both sides of the channel region. The channel region of the semiconductor is polycrystalline silicon without doping impurities, i.e., an intrinsic semiconductor. The source region and the drain region are polycrystalline silicon doped with conductive impurities, i.e., impurity semiconductors. The impurities doped in the source region and the drain region may be either P-type impurities or N-type impurities.

[0088] In some embodiments, the gate layer includes a first sub-gate layer located on a side of the semiconductor layer away from the substrate 105, the first sub-gate layer including a first gate, and the first gate overlapping the channel region. The gate layer also includes a second sub-gate layer located on a side of the first sub-gate layer away from the substrate 105, the second sub-gate layer including a second gate, and the orthographic projection of the second gate on the first gate layer may overlap with the first gate. The first and second gates may be formed as multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance.

[0089] In some embodiments, the thin film transistor layer includes a first gate insulating layer located between the gate layer and the semiconductor layer, the gate layer also includes a second gate insulating layer located between the first sub-gate layer and the second sub-gate layer, and the first inorganic sublayer may include at least one of the first gate insulating layer and the second gate insulating layer.

[0090] In some embodiments, the first inorganic sub-layer may consist of the first gate insulating layer and the second gate insulating layer.

[0091] In some embodiments, the thin film transistor layer further includes an interlayer insulating layer located between the source and drain electrode layer and the gate layer, and the second inorganic sublayer may be the interlayer insulating layer.

[0092] In some embodiments, the source-drain layer includes a source and a drain, the first interlayer insulating layer and the first gate insulating layer and the second gate insulating layer include source contact holes and drain contact holes, and the source region and the drain region are exposed through the source contact holes and the drain contact holes, respectively.

[0093] In some embodiments, the first type of routing 120 is located in at least one of the source and drain layer, the first sub-gate layer, and the second sub-gate layer, and the second type of routing 121 is located in at least one of the source and drain layer, the first sub-gate layer, and the second sub-gate layer.

[0094] In some embodiments, the first organic layer 108 serves as an insulating and planarizing layer and can be formed of an organic material with a low dielectric constant (eg, polyimide).

[0095] In some embodiments, the panel body 100 further includes a pixel definition layer located on the side of the first organic layer 108 away from the substrate 105 , a light-emitting device layer located on the side of the pixel definition layer away from the pixel definition layer, and an encapsulation layer located on the side of the light-emitting device layer away from the substrate 105 .

[0096] In some embodiments, the encapsulation layer may sequentially include, along a direction away from the substrate 105, a first inorganic encapsulation layer, a first organic encapsulation layer, and a second inorganic encapsulation layer located on the light-emitting device layer. Furthermore, the encapsulation layer may sequentially include, along a direction away from the substrate 105, a first inorganic encapsulation layer, a first organic encapsulation layer, a second inorganic encapsulation layer, and a third inorganic encapsulation layer located on the light-emitting device layer. Furthermore, the encapsulation layer may sequentially include, along a direction away from the substrate 105, a first inorganic encapsulation layer, a first organic encapsulation layer, a second inorganic encapsulation layer, a second organic encapsulation layer, a third inorganic encapsulation layer, a third organic encapsulation layer, and a fourth inorganic encapsulation layer located on the light-emitting device layer.

[0097] In some embodiments, the panel body 100 further includes a touch layer located on the side of the first organic layer 108 away from the substrate 105, the touch layer including a first touch metal layer, a second touch metal layer located on the side of the first touch metal layer away from the substrate 105, a second inorganic layer 107 spaced between the first touch metal layer and the second touch metal layer, and a second organic layer 116 located on the side of the second touch metal layer away from the substrate 105.

[0098] In some embodiments, the touch layer is located on a side of the encapsulation layer away from the substrate 105. The first touch metal layer can be directly disposed on the encapsulation layer, or a spacer layer can be further disposed between the first touch layer and the encapsulation layer. The spacer layer can include an inorganic spacer layer and / or an organic spacer layer.

[0099] Please refer to Figures 5 and 17. In some embodiments, the display panel 10 further includes a protective layer 123. The protective layer 123 is located on the light-emitting side of the main body 101 of the panel body 100. The protective layer 123 is adhered to the panel body 100. The curvature of any point on the surface of the side of the protective layer 123 away from the panel body 100 is not 0. Due to the adhesion of the protective layer 123 to the panel body 100, the edge sub-portion 104 is adhered to the protective layer 123, and the curvature of any point on the surface of the edge sub-portion 104 close to the protective layer 123 is not 0, which causes the edge sub-portion 104 to warp due to adhesion to the protective layer 123, and is more likely to cause stress concentration. Therefore, the present invention effectively reduces or even avoids the occurrence of cracks by spacing the first organic layer 108 between the first inorganic layer 106 and the second inorganic layer 107 in the edge sub-portion 104 or arranging the second inorganic layer 107 away from the edge sub-portion 104. When the curvature of any point on the surface of the edge sub-portion 104 close to the protective layer 123 is not 0, the product quality of the display panel 10 is improved.

[0100] In some embodiments, the display panel 10 further includes an adhesive layer 124 located between the protective layer 123 and the second organic layer 116 for bonding and fixing the protective layer 123 to the panel body 100. The material of the adhesive layer 124 can be selected from transparent optical adhesive.

[0101] Please refer to FIG. 17 . In some embodiments, the protective layer 123 is a cover plate, and the curvature of any point on the surface of the cover plate away from the panel body 100 is not 0, that is, the cover plate is a fully curved cover plate.

[0102] Referring to FIG. 5 , in some embodiments, the display panel 10 further includes a chip 127 and a flexible circuit board 128 disposed on the binding portion 102 .

[0103] Referring to FIG. 5 , in some embodiments, the display panel 10 further includes a support layer 125. The support layer 125 includes a first support portion 125a and a second support portion 125b. The first support portion 125a is located on the backlight side of the main body 101, and the second support portion 125b is located on a side of the binding portion 102 closer to the first support portion 125a. The support layer 125 can be made of materials such as stainless steel.

[0104] Referring to FIG. 5 , in some embodiments, the display panel 10 further includes a heat dissipation layer 126 located between the first support portion 125 a and the second support portion 125 b . The heat dissipation layer 126 is used to improve the heat dissipation performance and impact resistance of the display panel 10 .

[0105] Referring to FIG. 5 , in some embodiments, the display panel 10 further includes an adhesive layer 129 located between the heat dissipation layer 126 and the second support portion 125 b. The second support portion 125 b is bonded and fixed to the heat dissipation layer 126 via the adhesive layer 129, thereby fixing the binding portion 102 to the backlight side of the main body 101. The chip 127 and the flexible circuit board 128 are disposed on a side of the binding portion 102 away from the second support portion 125 b.

[0106] The display panel 10 provided by an embodiment of the present invention avoids the first inorganic layer 106 and the second inorganic layer 107 from contacting each other at the edge sub-portion 104, thereby reducing the generation of cracks and improving the product quality of the display panel 10.

[0107] Referring to FIG. 18 , the present invention further provides a display device 1000 , including any of the above-mentioned display panels 10 .

[0108] In some embodiments, the display device 1000 further includes a device body 20 , and the device body 20 is integrated with the display panel 10 .

[0109] The specific structure of the display panel 10 can be found in any of the above embodiments and drawings of the display panel 10 , and will not be described in detail here.

[0110] In this embodiment, the device body 20 may include a middle frame, frame glue, etc., and the display device 1000 may be a display terminal such as a mobile phone, a tablet, or a television, which is not limited here.

[0111] An embodiment of the present invention discloses a display panel and a display device, wherein the display panel includes a panel body, the panel body having a main body portion, a bending portion and a binding portion, the bending portion being connected to the main body portion, the bending portion including an edge sub-portion, the edge sub-portion being located at both ends of the bending portion and close to one side of the main body portion in a first direction, the panel body including: a substrate, a first inorganic layer located on one side of the substrate, a second inorganic layer located on a side of the first inorganic layer away from the substrate, a first organic layer located between the first inorganic layer and the second inorganic layer, within the edge sub-portion, the first organic layer is spaced between the first inorganic layer and the second inorganic layer, or the second inorganic layer is located outside the edge sub-portion. The present invention spaces the first organic layer between the first inorganic layer and the second inorganic layer within the edge sub-portion or arranges the second inorganic layer away from the edge sub-portion, thereby reducing the excessive thickness caused by the direct superposition of the inorganic layers within the edge sub-portion, thereby reducing the occurrence of cracks and improving the product quality of the display panel.

[0112] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this application, and all these changes or substitutions should fall within the scope of protection of the claims attached to this application.

Claims

1. A display panel, wherein, The display panel includes a panel body, the panel body having a main body portion, a bonding portion located on the backlight side of the main body portion, and a bending portion connected between the main body portion and the bonding portion. The bending portion is connected to a first side of the main body portion. The bending portion includes an edge sub-portion. The edge sub-portion is located at both ends of the bending portion in a first direction and the edge sub-portion is located on a side of the bending portion close to the main body portion. The first direction is parallel to the extending direction of the first side of the main body portion. The panel body includes: a substrate, located in the main body portion, the bending portion, and the bonding portion; a first inorganic layer, located on one side of the substrate; a second inorganic layer, located on a side of the first inorganic layer away from the substrate; a first organic layer, located between the first inorganic layer and the second inorganic layer; wherein, within the edge sub-portion, the first organic layer is spaced between the first inorganic layer and the second inorganic layer; or, the second inorganic layer is located outside the edge sub-portion, and the second inorganic layer is located between the two edge sub-portions in the first direction.

2. The display panel according to claim 1, wherein, The first inorganic layer includes a first sub-segment located in the edge sub-portion. The second inorganic layer includes a second sub-segment located in the edge sub-portion. The first organic layer includes a first organic sub-segment located in the edge sub-portion. The first organic sub-segment is spaced between the first sub-segment and the second sub-segment.

3. The display panel according to claim 2, wherein, The bending portion further includes a wiring sub-portion located between the two edge sub-portions. The first inorganic layer has a first end face located in the edge sub-portion. The second inorganic layer has a second end face located in the edge sub-portion. In the direction from the edge sub-portion to the wiring sub-portion, the second end face of the second inorganic layer is located between the first end face of the first inorganic layer and the wiring sub-portion.

4. The display panel according to claim 3, wherein, In the direction from the edge sub-portion to the wiring sub-portion, the edge sub-portion includes a first region; The first sub-segment includes at least one first groove. The first groove is located in the first region of the edge sub-portion. The first groove extends in a second direction. The second direction is parallel to the extending direction of a side of the edge sub-portion away from the wiring sub-portion.

5. The display panel according to claim 4, wherein, In the direction from the edge sub-portion to the wiring sub-portion, the edge sub-portion further includes a second region located on a side of the first region close to the wiring sub-portion. The first groove is located outside the second region. The first sub-segment is located in the first region and the second region.

6. The display panel according to claim 5, wherein, The second end face of the second inorganic layer is located in the second region.

7. The display panel according to claim 5, wherein, In the direction from the edge sub-portion to the wiring sub-portion, the edge sub-portion further includes a third region located on a side of the second region of the edge sub-portion close to the wiring sub-portion; The first sub-segment further includes a plurality of second grooves. The second grooves are located in the third region. The second grooves extend in the direction from the edge sub-portion to the wiring sub-portion. The plurality of second grooves are arranged in sequence in the second direction.

8. The display panel according to claim 7, wherein, The first sub-segment is also located in the third region. The second end face of the second inorganic layer is located in the second region.

9. The display panel according to claim 7, wherein, The first sub-segment is also located in the third region, and the second end face of the second inorganic layer is located in the third region.

10. The display panel according to claim 4, wherein, In the first region, a plurality of the first grooves are arranged in sequence along the direction from the edge sub-part to the trace sub-part.

11. The display panel according to claim 4, wherein, Along the direction from the edge sub-part to the trace sub-part, the edge sub-part further includes a third region, and the third region is located on the side of the first region of the edge sub-part close to the trace sub-part; The first sub-segment further includes a plurality of second grooves, the second grooves are located in the third region, the second grooves extend along the direction from the edge sub-part to the trace sub-part, and a plurality of the second grooves are arranged in sequence along the second direction.

12. The display panel according to claim 11, wherein, The first sub-segment is also located in the third region, and the second end face of the second inorganic layer is located in the third region.

13. The display panel according to claim 12, wherein, The panel body further includes a second organic layer, the second organic layer is located on the side of the second inorganic layer away from the substrate, and the second organic layer includes a second organic sub-segment located in the edge sub-part; Wherein, the first organic sub-segment exposes part of the first sub-segment, and the second organic sub-segment covers the second sub-segment and covers the first sub-segment exposed by the first organic sub-segment.

14. The display panel according to claim 1, wherein, In the bending part, the first inorganic layer is located in the trace sub-part and the edge sub-part of the bending part, and the second inorganic layer is only located in the trace sub-part of the bending part.

15. The display panel according to claim 1, wherein, The bending part further includes a cutting sub-part, the cutting sub-part is located on the side of the edge sub-part of the bending part away from the trace sub-part of the bending part, and the substrate and the first inorganic layer are located in the cutting sub-part.

16. The display panel according to claim 1, wherein, The panel body includes a thin film transistor layer located between the substrate and the first organic layer, the thin film transistor layer includes a gate layer, a source-drain layer located on the side of the gate layer away from the substrate, and the first inorganic layer, the first inorganic layer includes a first inorganic sub-layer and a second inorganic sub-layer, the first inorganic sub-layer is located between the gate layer and the substrate, and the second inorganic sub-layer is located between the source-drain layer and the gate layer; The panel body further includes a touch layer located on the side of the first organic layer away from the substrate, the touch layer includes a first touch metal layer, a second touch metal layer located on the side of the first touch metal layer away from the substrate, the second inorganic layer spaced between the first touch metal layer and the second touch metal layer, and a second organic layer located on the side of the second touch metal layer away from the substrate.

17. The display panel according to claim 16, wherein, The display panel further includes a protective layer, the protective layer is located on the light-emitting side of the main body part of the panel body, the protective layer is attached to the panel body, and the curvature of any point on the surface of the protective layer away from the panel body is not 0.

18. The display panel according to claim 17, wherein, The edge sub-part is attached to the protective layer, and the curvature of any point on the surface of the edge sub-part close to the protective layer is not 0.

19. A display device, wherein, Comprising a display panel, the display panel includes a panel body, the panel body having a main body portion, a bonding portion located on the backlight side of the main body portion, and a bending portion connected between the main body portion and the bonding portion, the bending portion being connected to a first side of the main body portion, the bending portion including an edge sub-portion, the edge sub-portion being located at both ends of the bending portion in a first direction and the edge sub-portion being located on a side of the bending portion close to the main body portion, the first direction being parallel to the extending direction of the first side of the main body portion, the panel body including: A substrate located on the main body portion, the bending portion, and the bonding portion; A first inorganic layer located on one side of the substrate; A second inorganic layer located on a side of the first inorganic layer away from the substrate; A first organic layer located between the first inorganic layer and the second inorganic layer; Wherein, within the edge sub-portion, the first organic layer is spaced between the first inorganic layer and the second inorganic layer; or, The second inorganic layer is located outside the edge sub-portion, and the second inorganic layer is located between the two edge sub-portions in the first direction.

20. The display device according to claim 19, wherein, The first inorganic layer includes a first sub-segment located on the edge sub-portion, the second inorganic layer includes a second sub-segment located on the edge sub-portion, the first organic layer includes a first organic sub-segment located on the edge sub-portion, and the first organic sub-segment is spaced between the first sub-segment and the second sub-segment.

Images