Display panel and wearable display device

Abstract

The embodiment of the invention discloses a display panel and a wearable display device, and the display panel comprises a substrate; the insulating layer is provided with a plurality of anti-cracking grooves which are arranged at intervals and extend in a bending manner; the flat layer is at least filled into the anti-cracking groove; wherein the distance between the center line of the anti-cracking groove and the edge of the substrate is defined as an outer edge distance D; defining the curvature of the center line of the anti-cracking groove as an extension curvature K; and the extension curvature K is increased along with the increase of the outer edge distance D. According to the wearable display device, the extension curvature K and the outer edge distance D are adaptively arranged, so that the crack curve can be effectively prevented from being generated by the anti-cracking groove in the edge of the display panel of the wearable display device with a smaller size.

Description

Technical Field

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

[0002] In the related art, a display panel with curved edges is prone to cracks. Anti-crack grooves may be provided on the display panel of a larger display device to prevent the occurrence of cracks.

[0003] However, this situation is more obvious on smaller display devices (such as smart watches, bracelets, etc.), especially when the anti-crack groove itself is designed in an arc shape to adapt to the panel, the anti-crack groove itself may also produce crack defects. Summary of the invention

[0004] As a first aspect of the present application, an embodiment of the present application provides a display panel, comprising: a substrate; an insulating layer, provided with a plurality of spaced-apart curved and extending anti-crack grooves; a flat layer, at least filling the anti-crack grooves; wherein the distance between the center line of the anti-crack groove and the edge of the substrate is defined as an outer edge distance D; the curvature of the center line of the anti-crack groove is defined as an extension curvature K; the extension curvature K increases with the increase of the outer edge distance D.

[0005] Optionally, in some embodiments of the present application, the display panel further includes:

[0006] an organic layer disposed on a surface opposite to the substrate;

[0007] The touch layer is disposed between the planar layer and the organic layer.

[0008] Optionally, in some embodiments of the present application, the display panel further includes:

[0009] A buffer layer is arranged between the substrate and the insulating layer and / or the planar layer.

[0010] Optionally, in some embodiments of the present application, the insulating layer includes: a gate insulating layer and an interlayer dielectric layer.

[0011] Optionally, in some embodiments of the present application, the gate insulation layer is disposed between the buffer layer and the interlayer dielectric layer.

[0012] Optionally, in some embodiments of the present application, the interlayer dielectric layer is disposed between the gate insulating layer and the planarizing layer.

[0013] Optionally, in some embodiments of the present application, the gate insulating layer and / or the interlayer dielectric layer are made of inorganic insulating material, and the planarizing layer is made of organic insulating material; the anti-crack groove is arranged between the stacked structure consisting of the two gate insulating layers and the interlayer dielectric layer.

[0014] Optionally, in some embodiments of the present application, the extension curvature K and the outer edge distance D satisfy a linear relationship.

[0015] Optionally, in some embodiments of the present application, the width of the anti-crack groove is defined as a groove width W; the groove width W decreases as the outer edge distance D increases.

[0016] Optionally, in some embodiments of the present application, the distance between the anti-crack grooves is defined as an inter-groove distance V; the inter-groove distance V decreases as the outer edge distance D increases.

[0017] Optionally, in some embodiments of the present application, the width of the anti-crack groove ranges from 4.9 μm to 9.8 μm; the distance between the anti-crack grooves ranges from 3.45 μm to 6.9 μm.

[0018] Optionally, in some embodiments of the present application, as the second aspect of the present application, an embodiment of the present application provides a wearable display device, comprising the aforementioned display panel.

[0019] The beneficial effects provided by the embodiments of the present application include at least:

[0020] By adapting the extension curvature K and the outer edge distance D, the anti-crack groove at the edge of the display panel of a wearable display device of a smaller size can effectively prevent the generation of a crack curve.

[0021] Other beneficial effects of the embodiments of the present application will be further described in the following specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a display panel provided in some embodiments of the present application;

[0023] Figure 2 It is a schematic diagram of a part of the structure of a display panel provided in some embodiments of the present application;

[0024] Figure 3 is another partial structural schematic diagram of a display panel provided in some embodiments of the present application;

[0025] Figure 4is a schematic diagram of an extension of a crack prevention groove of a display panel provided in some embodiments of the present application;

[0026] Figure 5 It is a structural schematic diagram of a wearable display device provided in an optional embodiment of the present application.

[0027] Meaning of the reference symbols:

[0028] 100, display panel; 110, substrate; 110a, substrate edge;

[0029] 120, insulating layer; 120a, crack prevention groove; 121, gate insulating layer; 122, interlayer dielectric layer;

[0030] 130, flat layer; 140, organic layer; 150, touch layer; 160, buffer layer;

[0031] C1, center dividing line. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0033] In addition, the "plurality" in the embodiments of the present application refers to two or more. The "first" and "second" in the embodiments of the present application are used to distinguish different technical features, and do not indicate any order, quantity or importance.

[0034] The directional terms mentioned in this application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only directions in the drawings. The directional terms used in this article are used to explain and illustrate this application, and are not used to limit the scope of protection of this application.

[0035] In the drawings, components with the same structure are represented by the same numerical labels, and components with similar structures or functions are represented by similar numerical labels. In addition, for the convenience of understanding and description, the size and thickness of each component shown in the drawings are arbitrarily shown, and the present application does not limit the size and thickness of each component.

[0036] The various embodiments provided in this application are similar, and features in different embodiments may be combined with each other.

[0037] The order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0038] Reference Figures 1 to 4As shown, the display panel 100 of the present application includes: a substrate 110, an insulating layer 120, and a planar layer 130. Of course, other functional layers such as a light-emitting layer (not shown in the figure) may also be provided.

[0039] The substrate 110 provides a basis for the panel, and the substrate 110 may be formed of a barrier layer (PB layer, not shown in the figure).

[0040] In some embodiments of the present application, the gate insulating layer 121 and / or the interlayer dielectric layer 122 are made of inorganic insulating materials, and the planarizing layer 130 is made of organic insulating materials; the anti-crack groove 120a is arranged between the stacked structure composed of the two gate insulating layers 121 and the interlayer dielectric layer 122.

[0041] A uniform "insulating layer" is formed by alternating the flat layer 130 and the insulating layer 120. From a structural perspective, they are combined in the form of "dams" and "grooves", and from a material perspective, they are combined in the form of "organic" and "inorganic". This avoids the need to add an additional film layer structure and utilizes the difference in the organic-inorganic bonding interface to block the extension of cracks. In addition, the touch layer 150 covering the flat layer 130 is made of inorganic materials and thus shrinks, and the organic layer 140 made of organic materials is in contact with the flat layer 130, both of which improve the longitudinal interlayer bonding ability of the display panel 100 and prevent cracks in the longitudinal direction.

[0042] Among them, the insulating layer 120 is provided with a plurality of curved and extended crack prevention grooves 120a arranged at intervals; the flat layer 130 is at least filled to the crack prevention grooves 120a; wherein, the width of the crack prevention grooves 120a is W1μm; the thickness of the flat layer 130 is H1μm; the ratio of the W1 to the H1 ranges from 1.25 to 2.5.

[0043] By adopting such a scheme, the anti-crack groove 120a and the thickness of the flat layer 130 can be balanced, and the anti-crack groove 120a and the thickness of the flat layer 130 can be balanced; thereby, the anti-crack groove 120a at the edge of the display panel of a smaller-sized wearable display device can effectively prevent the generation of crack curves.

[0044] That is, the anti-crack effect brought by the anti-crack groove 120 a is balanced, while the bonding effect brought by the planar layer 130 is taken into account.

[0045] More specifically, the ratio of W1 to H1 may also range from 1.5 to 2.25, 1.8 to 2, etc.; or, the ratio of W1 to H1 may also range from 1.25 to 1.5, 1.6 to 2, 2 to 2.25, 2.25 to 2.5, etc.

[0046] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the display panel 100 further includes: an organic layer 140 and a touch layer 150. The organic layer 140 is disposed on a surface opposite to the substrate 110; the touch layer 150 is disposed between the planar layer 130 and the organic layer 140.

[0047] In some embodiments of the present application, the display panel 100 further includes a buffer layer 160 . The buffer layer 160 is disposed between the substrate 110 and the insulating layer 120 and / or the planar layer 130 .

[0048] In some embodiments of the present application, the insulating layer 120 includes: a gate insulating layer 121 and an interlayer dielectric layer 122. The gate insulating layer 121 is disposed between the buffer layer 160 and the interlayer dielectric layer 122. The interlayer dielectric layer 122 is disposed between the gate insulating layer 121 and the planar layer 130.

[0049] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the thickness of the portion of the planar layer 130 that exceeds the insulating layer 120 ranges from 1.16 μm to 2.34 μm.

[0050] More specifically, the thickness range of the portion of the flat layer 130 that exceeds the insulating layer 120 can also be 1.3μm to 2.3μm, 1.4μm to 2.2μm, 1.5μm to 2.1μm, 1.6μm to 2μm, etc.; or, the thickness range of the portion of the flat layer 130 that exceeds the insulating layer 120 can also be 1.16μm to 1.2μm, 1.2μm to 1.7μm, 1.8μm to 2.1μm, 2.1μm to 2.3μm, etc.

[0051] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the thickness of the portion of the planar layer 130 that exceeds the insulating layer 120 is H2 μm; and the value range of W1 and H2 is 2.93 to 5.87.

[0052] This can further ensure the bonding strength.

[0053] More specifically, the value range of the W1 and the H2 can also be 3 to 5.7, 3.02 to 5.6, 3.1 to 5.5, 3.5 to 5, 3.7 to 4.6, 4.1 to 4.5, etc.; or, the value range of the W1 and the H2 can also be 2.93 to 3.2, 3.3 to 3.8, 3.8 to 4.2, 4.4 to 5.1, 5.1 to 5.45, 5.5 to 5.87, etc.

[0054] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the distance between the crack prevention grooves 120a ranges from 3.45 μm to 6.9 μm.

[0055] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the distance between the crack prevention grooves 120a is W2 μm, and the ratio of W1 to W2 ranges from 0.99 to 1.99.

[0056] More specifically, the ratio of the W1 to the W2 may also range from 1 to 1.9, 1.2 to 1.8, 1.3 to 1.7, 1.4 to 1.6, 1.45 to 1.55, 0.99 to 1.99, etc., or the ratio of the W1 to the W2 may also range from 0.99 to 1.99, 0.99 to 1.99, 0.99 to 1.99, 0.99 to 1.99, 0.99 to 1.99, 0.99 to 1.99, etc.

[0057] This can further balance the anti-cracking effect and the emphasis on bonding.

[0058] Reference Figures 1 to 4 As shown, in some embodiments of the present application, the distance between the center line C1 of the anti-crack groove 120a and the substrate edge 110a is defined as the outer edge distance D; the curvature of the center line C1 of the anti-crack groove 120a is defined as the extension curvature K; the extension curvature K increases as the outer edge distance D increases.

[0059] In some embodiments of the present application, the extension curvature K and the outer edge distance D satisfy a linear relationship.

[0060] In some embodiments of the present application, the width of the anti-crack groove 120a is defined as a groove width W; the groove width W decreases as the outer edge distance D increases.

[0061] In some embodiments of the present application, the distance between the anti-crack grooves 120a is defined as an inter-groove distance V; the inter-groove distance V decreases as the outer edge distance D increases.

[0062] In this way, the size of the anti-leakage groove can be adjusted in time according to the distance from the edge, so as to obtain a better anti-cracking effect while reducing the space occupied.

[0063] In some embodiments of the present application, the width of the crack prevention groove 120a ranges from 4.9 μm to 9.8 μm; the distance between the crack prevention grooves 120a ranges from 3.45 μm to 6.9 μm.

[0064] Reference Figure 5 As shown, another embodiment of the present application also provides a wearable display device 200, including the display panel 100 described in any of the above embodiments.

[0065] The wearable display device 200 may be a smart watch, a wristband, a portable PDA, etc.

[0066] In some embodiments, the display panel 100 of the present application may also be applied to the following display devices: mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, navigators, and any other products or components with display functions.

[0067] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; The insulating layer is provided with a plurality of curved and extending crack-proof grooves arranged at intervals; A flat layer, at least filling the anti-crack groove; The distance between the center line of the anti-crack groove and the edge of the substrate is defined as the outer edge distance D; the curvature of the center line of the anti-crack groove is defined as the extension curvature K; and the extension curvature K increases as the outer edge distance D increases.

2. The display panel according to claim 1, characterized in that: The display panel further includes: an organic layer disposed on a surface opposite to the substrate; The touch layer is disposed between the planar layer and the organic layer.

3. The display panel according to claim 2, characterized in that: The display panel further includes: A buffer layer is arranged between the substrate and the insulating layer and / or the planar layer.

4. The display panel according to claim 3, It is characterized in that The insulating layer includes: a gate insulating layer and an interlayer dielectric layer; the gate insulating layer is arranged between the buffer layer and the interlayer dielectric layer.

5. The display panel according to claim 4, characterized in that: in, The interlayer dielectric layer is disposed between the gate insulating layer and the planarization layer.

6. The display panel according to claim 5, characterized in that: in, The gate insulating layer and / or the interlayer dielectric layer are made of an inorganic insulating material, and the planar layer is made of an organic insulating material; the crack prevention groove is arranged between the stacked structure consisting of two gate insulating layers and the interlayer dielectric layer.

7. The display panel according to any one of claims 1 to 6, characterized in that: in, The extension curvature K and the outer edge distance D satisfy a linear relationship.

8. The display panel according to claim 7, characterized in that: in, The width of the anti-crack groove is defined as the groove width W; the groove width W decreases as the outer edge distance D increases; the distance between the anti-crack grooves is defined as the inter-groove distance V; the inter-groove distance V decreases as the outer edge distance D increases.

9. The display panel according to claim 8, characterized in that: in, The width of the crack prevention grooves ranges from 4.9 μm to 9.8 μm; the distance between the crack prevention grooves ranges from 3.45 μm to 6.9 μm.

10. A wearable display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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