Organic light-emitting display panel and electronic equipment

Abstract

The utility model discloses an organic light-emitting display panel and electronic equipment, the display panel comprises a display area and a non-display area surrounding the display area, a plurality of sub-pixels are arranged in the display area, the non-display area comprises a substrate, a first insulating layer, a second insulating layer, a metal layer and a packaging layer, the first insulating layer is arranged on one side of the substrate, and the second insulating layer is arranged on the other side of the substrate. The second insulating layer is arranged on the side, away from the substrate, of the first insulating layer, at least one groove penetrating through the first insulating layer and the second insulating layer is formed in the second insulating layer, the metal layer is arranged on the side, away from the first insulating layer, of the second insulating layer, the metal layer fills the groove, and the packaging layer is arranged on the side, away from the second insulating layer, of the metal layer. And the metal layer and the second insulating layer are coated. According to the utility model, the invasion path of external oxygen and water vapor can be prolonged, so that the service life of the display panel is prolonged. In addition, the metal layer is arranged in the non-display area, and the groove is filled with the metal layer, so that the service life of the display panel can be further prolonged.

Description

Technical Field

[0001] The utility model relates to display technology, in particular to an organic light-emitting display panel and electronic equipment. Background Art

[0002] Organic light-emitting display panels have self-luminous properties and do not use a separate light source. Therefore, they can be made thinner and lighter than display devices using a separate light source, and are relatively easy to achieve flexible and foldable display characteristics.

[0003] Organic light-emitting display panels typically consist of a display area in the center of the panel and a non-display area surrounding the display area at the edges. Pixels are arranged in an array within the display area, and the pixels emit light by controlling the driving current flowing through their light-emitting layers.

[0004] As a display panel ages, the sealing performance of the encapsulation layer degrades, allowing moisture and oxygen to penetrate the interface between the encapsulation layer and the non-display area and enter the display area. The light-emitting layers of the pixels in the display area are organic and easily oxidized by moisture and oxygen. This causes pixels near the edge of the panel to stop emitting light, which gradually spreads to the center, shortening the display panel's lifespan. Utility Model Content

[0005] The utility model provides an organic light-emitting display panel and electronic equipment, which can extend the path of external oxygen and water vapor intrusion, prevent oxygen and water vapor from oxidizing and diffusing into the display area, and extend the service life of the display panel.

[0006] In a first aspect, the present invention provides an organic light-emitting display panel, comprising a display area and a non-display area surrounding the display area, wherein a plurality of sub-pixels are arranged in the display area, and the non-display area comprises:

[0007] substrate;

[0008] a first insulating layer, the first insulating layer being disposed on one side of the substrate;

[0009] a second insulating layer, the second insulating layer being disposed on a side of the first insulating layer away from the substrate, the second insulating layer being provided with at least one groove penetrating the first insulating layer and the second insulating layer;

[0010] a metal layer, the metal layer being disposed on a side of the second insulating layer away from the first insulating layer, and the metal layer filling the groove;

[0011] The packaging layer is arranged on a side of the metal layer away from the second insulating layer and covers the metal layer and the second insulating layer.

[0012] Optionally, a sealing layer is provided on the inner wall of the groove.

[0013] Optionally, a sealing layer is provided at the bottom of the groove and the sidewall of the first insulating layer in the groove, the sealing layer has a first extension portion extending from the sidewall of the groove toward the side of the first insulating layer away from the substrate, and the second insulating layer covers the first extension portion.

[0014] Optionally, the sealing layer is an indium tin oxide layer.

[0015] Optionally, the first insulating layer has a second extending portion extending to the display area, and the second extending portion serves as a planarization layer in the display area.

[0016] Optionally, the second insulating layer has a third extension portion extending to the display area, the third extension portion serves as a dam layer in the display area, the dam layer is provided with a plurality of openings, and the light-emitting layer of the sub-pixel is provided in the openings.

[0017] Optionally, the metal layer has a fourth extension portion extending to the display area, and the fourth extension portion serves as a cathode in the display area.

[0018] Optionally, the area of ​​the vertical projection of the second insulating layer on the substrate is smaller than the area of ​​the vertical projection of the first insulating layer on the substrate, and the area of ​​the vertical projection of the metal layer on the substrate is smaller than the area of ​​the vertical projection of the second insulating layer on the substrate.

[0019] Optionally, the encapsulation layer covers the display area and the non-display area.

[0020] In a second aspect, the present invention further provides an electronic device, comprising the organic light-emitting display panel provided in the first aspect of the present invention.

[0021] The organic light-emitting display panel provided by the present invention includes a display area and a non-display area surrounding the display area. A plurality of sub-pixels are arranged in the display area. The non-display area includes a substrate, a first insulating layer, a second insulating layer, a metal layer, and an encapsulation layer. The first insulating layer is arranged on one side of the substrate, the second insulating layer is arranged on a side of the first insulating layer away from the substrate, and at least one groove is provided on the second insulating layer, penetrating the first and second insulating layers. The metal layer is arranged on a side of the second insulating layer away from the first insulating layer, and the metal layer fills the groove. The encapsulation layer is arranged on a side of the metal layer away from the second insulating layer, and covers the metal layer and the second insulating layer. The utility model provides a groove in the non-display area, which can extend the path for external oxygen and water vapor to invade, thereby extending the service life of the display panel. In addition, the metal layer is provided in the non-display area, and the metal layer fills the groove. The surface of the metal layer is easily oxidized by oxygen and water vapor, and then absorbs oxygen and water vapor, causing oxygen and water vapor to accumulate in the groove, preventing the oxidation of oxygen and water vapor from diffusing to the display area, further extending the service life of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a front view of an organic light emitting display panel provided by the present invention;

[0024] Figure 2 This is a cross-sectional view of an organic light emitting display panel provided by the present invention. DETAILED DESCRIPTION

[0025] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0026] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0028] Figure 1 This is a front view of an organic light emitting display panel provided by the present invention. Figure 2 This is a cross-sectional view of an organic light-emitting display panel provided by the present invention, with the section line as shown in FIG. Figure 1 As shown in CC, Figure 1 、 2 As shown in FIG, the organic light emitting display panel includes a display area AA and a non-display area BA arranged around the display area AA. The display area AA is the area of ​​the display panel that can display images, and a plurality of sub-pixels arranged in an array are arranged in the display area AA. The non-display area BA is the area of ​​the display panel that cannot display images, and is usually the edge area of ​​the display panel. Figure 2 As shown, the non-display area BA includes:

[0029] The substrate 110 can serve as the substrate of the display area AA and the common substrate of the non-display area BA. The substrate 110 can be transparent glass, or other transparent materials, or flexible transparent materials, which is not limited in the embodiment of the present invention.

[0030] The first insulating layer 120 is disposed on one side of the substrate 110 .

[0031] The second insulating layer 130 is disposed on a side of the first insulating layer 120 away from the substrate 110. The second insulating layer 130 is provided with at least one groove 131 penetrating the first insulating layer 120 and the second insulating layer 130. The groove 131 is provided along the edge of the display panel.

[0032] The metal layer 140 is disposed on a side of the second insulating layer 130 away from the first insulating layer 120 , and the metal layer 140 fills the groove 131 .

[0033] The encapsulation layer 150 is disposed on a side of the metal layer 140 away from the second insulating layer 130 and covers the metal layer 140 and the second insulating layer 130 .

[0034] External oxygen and water vapor typically intrude through the interface between the encapsulation layer 150 and other layers. The present invention provides grooves 131 in the non-display area BA to reduce the path of intrusion for external oxygen and water vapor, thereby extending the lifespan of the display panel. Furthermore, a metal layer 140 is provided in the non-display area BA, and metal layer 140 fills grooves 131. The surface of metal layer 140 is easily oxidized by oxygen and water vapor, which in turn absorbs oxygen and water vapor, causing them to accumulate within grooves 131. This prevents the oxidized oxygen and water vapor from diffusing into the display area AA, further extending the lifespan of the display panel.

[0035] The organic light-emitting display panel provided by the present invention includes a display area and a non-display area surrounding the display area. A plurality of sub-pixels are arranged in the display area. The non-display area includes a substrate, a first insulating layer, a second insulating layer, a metal layer, and an encapsulation layer. The first insulating layer is arranged on one side of the substrate, the second insulating layer is arranged on a side of the first insulating layer away from the substrate, and at least one groove is provided on the second insulating layer, penetrating the first and second insulating layers. The metal layer is arranged on a side of the second insulating layer away from the first insulating layer, and the metal layer fills the groove. The encapsulation layer is arranged on a side of the metal layer away from the second insulating layer, and covers the metal layer and the second insulating layer. The utility model provides a groove in the non-display area, which can extend the path for external oxygen and water vapor to invade, thereby extending the service life of the display panel. In addition, the metal layer is provided in the non-display area, and the metal layer fills the groove. The surface of the metal layer is easily oxidized by oxygen and water vapor, and then absorbs oxygen and water vapor, causing oxygen and water vapor to accumulate in the groove, preventing the oxidation of oxygen and water vapor from diffusing to the display area, further extending the service life of the display panel.

[0036] In some embodiments of the present invention, Figure 2 As shown, a sealing layer 160 is provided on the inner wall of the groove 131. The sealing layer 160 is used to seal the inner wall of the groove 131, preventing oxygen and water vapor accumulated in the groove 131 from diffusing toward the display area AA through the interface between the substrate 110 and the first insulating layer 120, and the interface between the first insulating layer 120 and the second insulating layer 130, thereby further extending the service life of the display panel.

[0037] For example, Figure 2 As shown, a sealing layer 160 is provided at the bottom of the groove 131 and on the sidewalls of the first insulating layer 120 within the groove 131. The sealing layer 160 has a first extension 161 extending toward the side of the first insulating layer 120 away from the substrate 110. The second insulating layer 130 covers the first extension 161. The stepped surface formed by the second insulating layer 130 and the first extension 161 further reduces the path for external oxygen and water vapor to intrude, thereby extending the service life of the display panel.

[0038] In some embodiments of the present invention, Figure 2 As shown, the area of ​​the vertical projection of the second insulating layer 130 on the substrate 110 is smaller than the area of ​​the vertical projection of the first insulating layer 120 on the substrate 110, and the area of ​​the vertical projection of the metal layer 140 on the substrate 110 is smaller than the area of ​​the vertical projection of the second insulating layer 130 on the substrate 110. In this way, the interface between the encapsulation layer 150 and the second insulating layer 130 and the metal layer 140 is stepped, which extends the path for external oxygen and water vapor to invade, and extends the service life of the display panel.

[0039] In some embodiments of the present invention, the display area AA includes a plurality of sub-pixels arranged in an array. Figure 2 The structure of a sub-pixel is described as an example. The sub-pixel is formed on a substrate 110 and includes a light-emitting area A1 and a non-light-emitting area A2. A driving circuit is provided in the non-light-emitting area A2. The driving circuit may include components such as thin film transistors and capacitors. Figure 2 Take the cross-section of one thin film transistor as an example, Figure 2As shown, the non-luminescent area A2 includes a light absorption layer 171, a thin film transistor, a passivation layer 173, a planarization layer 174, and a dam layer 175. The light absorption layer 171 is formed in the non-luminescent area A2. The light absorption layer 171 has a light absorption function. When external ambient light shines on the light absorption layer 171, the light absorption layer 171 can absorb most of the light in the visible light band, thereby preventing the external ambient light from being reflected by the subsequent metal layer and causing the problem of reflection on the display panel, thereby enhancing the display effect. The thin film transistor includes a source electrode 1721, a drain electrode 1722, an active layer 1723, a gate insulating layer 1724, and a gate electrode 1725. The active layer 1723 is formed on the side of the light absorbing layer 171 away from the substrate 110. The source electrode 1721 and the drain electrode 1722 are formed on the side of the active layer 1723 away from the light absorbing layer 171, and the source electrode 1721 and the drain electrode 1722 are insulated and isolated from each other. The gate insulating layer 1724 covers the source electrode 1721 and the drain electrode 1722. The gate electrode 1725 is formed on the side of the gate insulating layer 1724 away from the source electrode 1721 and the drain electrode 1722. The passivation layer 173 covers the gate electrode 1725. A planarization layer 174 is formed on the side of the passivation layer 173 away from the gate electrode 1725 and extends to cover the light-emitting area A1. The planarization layer 174 is used to eliminate the step difference between the light-emitting area A1 and the non-light-emitting area A2. The dam layer 175 is formed on the side of the planarization layer 174 away from the passivation layer 173. The dam layer 175 is patterned and has an opening at a position corresponding to the light-emitting area A1. The light-emitting area A1 includes a filter layer 181, a planarization layer 174, an anode 182, a light-emitting layer 183, a cathode 184, and an encapsulation layer 150. The filter layer 181 is formed on the substrate 110 and is used to filter the white light emitted by the light-emitting layer 183 to obtain a desired color light, such as red light, green light, or blue light. The planarization layer 174 is formed on the side of the filter layer 181 away from the substrate 110. The anode 182 is formed on the side of the planarization layer 174 away from the filter layer. The anode 182 has an extension 1821 that penetrates the planarization layer 174 and the gate insulating layer 1724. The extension 1821 is connected to the drain 1722 of the thin film transistor. The light-emitting layer 183 is formed on the side of the anode 182 away from the planarization layer 174 and is formed within the opening of the bank layer 175. The cathode 184 is formed on the side of the light-emitting layer 183 away from the anode 182 and covers the entire display area AA. The encapsulation layer 150 is formed on the side of the cathode 184 away from the light-emitting layer 183.

[0040] In some embodiments of the present invention, sealing layer 160 is made of indium tin oxide (ITO), which has good sealing properties. Furthermore, in display area AA, the anode 182 of the sub-pixel is also typically made of ITO. Therefore, sealing layer 160 can be prepared simultaneously with the anode 182 of the sub-pixel, simplifying the process and reducing production costs.

[0041] In some embodiments of the present invention, Figure 2 As shown, the first insulating layer 120 has a second extension portion extending to the display area AA, and the second extension portion serves as the planarization layer 174 in the display area AA, that is, the first insulating layer 120 and the planarization layer 174 are prepared and formed in the same preparation process, which simplifies the process flow and reduces the production cost.

[0042] In some embodiments of the present invention, Figure 2 As shown, the second insulating layer 130 has a third extension portion extending to the display area AA, and the third extension portion serves as the dam layer 175 in the display area AA, that is, the second insulating layer 130 and the dam layer 175 are prepared in the same preparation process, which simplifies the process flow and reduces the production cost.

[0043] In some embodiments of the present invention, Figure 2 As shown, the metal layer 140 has a fourth extension portion extending to the display area AA, and the fourth extension portion serves as the cathode 184 in the display area AA. That is, the metal layer 140 and the cathode 184 are prepared in the same preparation process, which simplifies the process flow and reduces the production cost.

[0044] In some embodiments of the present invention, Figure 2 As shown, the encapsulation layer 150 covers the display area AA and the non-display area BA.

[0045] The present invention further provides an electronic device, comprising the organic light-emitting display panel provided by any of the aforementioned embodiments of the present invention. The electronic device may be a television, a smart phone, a tablet computer, a display, etc., and the present invention does not limit this.

[0046] In the description of this article, it should be understood that the terms "up", "down", "left", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] Throughout this specification, references to terms such as "one embodiment" and "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. An organic light emitting display panel, characterized in that: It includes a display area and a non-display area surrounding the display area, wherein a plurality of sub-pixels are arranged in the display area, and the non-display area includes: substrate; a first insulating layer, the first insulating layer being disposed on one side of the substrate; a second insulating layer, the second insulating layer being disposed on a side of the first insulating layer away from the substrate, the second insulating layer being provided with at least one groove penetrating the first insulating layer and the second insulating layer; a metal layer, the metal layer being disposed on a side of the second insulating layer away from the first insulating layer, and the metal layer filling the groove; The packaging layer is arranged on a side of the metal layer away from the second insulating layer and covers the metal layer and the second insulating layer.

2. The organic light emitting display panel according to claim 1, wherein: The inner wall of the groove is provided with a sealing layer.

3. The organic light emitting display panel according to claim 2, wherein: A sealing layer is provided at the bottom of the groove and the sidewall of the first insulating layer in the groove. The sealing layer has a first extension portion extending from the sidewall of the groove toward the first insulating layer away from the substrate. The second insulating layer covers the first extension portion.

4. The organic light emitting display panel according to claim 2 or 3, wherein: The sealing layer is an indium tin oxide layer.

5. The organic light emitting display panel according to any one of claims 1 to 3, wherein: The first insulating layer has a second extending portion extending to the display area, and the second extending portion serves as a planarization layer in the display area.

6. The organic light emitting display panel according to any one of claims 1 to 3, wherein: The second insulating layer has a third extension portion extending to the display area. The third extension portion serves as a dam layer in the display area. The dam layer is provided with a plurality of openings. The light-emitting layers of the sub-pixels are provided in the openings.

7. The organic light emitting display panel according to any one of claims 1 to 3, wherein: The metal layer has a fourth extension portion extending to the display area, and the fourth extension portion serves as a cathode in the display area.

8. The organic light emitting display panel according to any one of claims 1 to 3, wherein: The vertical projection area of ​​the second insulating layer on the substrate is smaller than the vertical projection area of ​​the first insulating layer on the substrate, and the vertical projection area of ​​the metal layer on the substrate is smaller than the vertical projection area of ​​the second insulating layer on the substrate.

9. The organic light emitting display panel according to any one of claims 1 to 3, wherein: The encapsulation layer covers the display area and the non-display area.

10. An electronic device, characterized in that: The organic light emitting display panel comprises any one of claims 1 to 9.

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