CN-121985680-A - Display panel

CN121985680ACN 121985680 ACN121985680 ACN 121985680ACN-121985680-A

Abstract

The application belongs to the technical field of display driving, and particularly relates to a display panel, which comprises at least one humidity compensation structure, wherein the humidity compensation structure comprises a temperature-sensitive water storage layer, a buffer water storage layer and an electrostatic driving layer, wherein the temperature-sensitive water storage layer is configured to release water vapor when the current environment temperature reaches a preset threshold value, the buffer water storage layer is configured to receive and store the water vapor released by the temperature-sensitive water storage layer, the electrostatic driving layer is configured to respond to static charges in the current environment to generate a conduction channel, so that the water vapor stored in the buffer water storage layer is released into the current environment through the conduction channel, and the environment humidity is actively supplemented under the high-temperature low-humidity working condition through the synergistic effect of the temperature-sensitive water storage layer, the buffer water storage layer and the electrostatic driving layer, so that the risks of static electricity generation and accumulation are reduced, and the antistatic capability and long-term reliability of an OLED display product under a complex use environment are remarkably improved.

Inventors

LI YAO
YE LIDAN

Assignees

惠科股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260325

Claims (10)

1. The utility model provides a display panel, includes the display area and around the frame district that the display area set up, the display area is provided with first light emitting unit and the second light emitting unit that the interval set up at least, its characterized in that, be provided with at least one humidity compensation structure in the frame district, humidity compensation structure includes: The temperature-sensitive water storage layer is configured to release water vapor when the current ambient temperature reaches a preset threshold value; The buffering water storage layer at least partially coats the temperature-sensitive water storage layer, is communicated with the temperature-sensitive water storage layer and is configured to receive and store water vapor released by the temperature-sensitive water storage layer; The static driving layer is arranged on one side of the buffering water storage layer, which is far away from the temperature-sensitive water storage layer, is communicated with the buffering water storage layer and is configured to respond to static charges in the current environment to generate a conduction channel so that water vapor stored in the buffering water storage layer is released into the current environment through the conduction channel.
2. The display panel of claim 1, further comprising a substrate; the temperature-sensitive water storage layer is arranged on the substrate, and the buffer water storage layer coats the temperature-sensitive water storage layer; or, the buffering water storage layer is arranged on the substrate, and the temperature-sensitive water storage layer is arranged inside the buffering water storage layer.
3. The display panel of claim 1, further comprising a packaging structure overlying the first and second light emitting units, the packaging structure comprising a first inorganic packaging layer, a water storage packaging layer, an organic packaging layer, and a second inorganic packaging layer stacked in sequence; Wherein the water storage encapsulation layer has a horizontal width greater than that of the organic encapsulation layer, and is configured to block solvent permeation when the organic encapsulation layer is formed, and to store water vapor during use.
4. A display panel according to any one of claims 1-3, further comprising an electrostatic protection structure disposed between the first light emitting unit and the second light emitting unit, the electrostatic protection structure comprising: A first conductive layer electrically connected to the first light emitting unit configured to collect electrostatic charge in the first light emitting unit; A second conductive layer electrically connected to the second light emitting unit and configured to collect electrostatic charges in the second light emitting unit; The catalytic functional layer is arranged between the first conductive layer and the second conductive layer, and the first conductive layer, the catalytic functional layer and the second conductive layer are sequentially laminated; wherein the catalytic functional layer is configured to catalyze the release of static charge on the first conductive layer or/and the second conductive layer and to adsorb water oxygen molecules in the environment.
5. The display panel of claim 4, wherein the catalytic functional layer comprises: an insulating layer having a first side and a second side disposed opposite each other; A first catalytic portion disposed on a first side of the insulating layer, in contact with the first conductive layer, and insulated from the first light emitting unit; a second catalytic part disposed at a second side of the insulating layer, in contact with the second conductive layer, and insulated from the second light emitting unit; wherein the first catalytic portion and the second catalytic portion comprise an electrostatically catalyzed material.
6. The display panel according to claim 5, wherein the first catalytic portion covers a portion of a surface of the first conductive layer facing the second conductive layer and an end of the first conductive layer away from the first light emitting unit; the second catalytic part covers a part of the surface of the second conductive layer facing the first conductive layer and an end of the second conductive layer away from the second light emitting unit.
7. A display panel according to any one of claims 1-3, further comprising an electrostatic protection structure disposed between the first light emitting unit and the second light emitting unit, the electrostatic protection structure comprising: A ground electrode configured to be electrically connected to a ground signal; A water storage component arranged above the grounding electrode and configured to adsorb and store water vapor in the environment; An electrostatic drive assembly is disposed in contact with the water storage assembly and in contact with the first and/or second light emitting units and is configured to generate a conductive path in response to electrostatic charge in the first and/or second light emitting units, causing moisture stored in the water storage assembly to at least partially enter the conductive path to form a bleed path of the electrostatic charge to the ground electrode.
8. The display panel of claim 7, wherein a gap is provided between the cathode of the first light emitting unit and the cathode of the second light emitting unit; The water storage component comprises a first water storage piece and a second water storage piece which are vertically connected, wherein the first water storage piece is positioned above the second water storage piece, the top end of the first water storage piece and the gap are oppositely arranged in the vertical direction, and the bottom end of the second water storage piece is in contact with the grounding electrode; the width of the top end of the second water storage piece is larger than that of the bottom end of the second water storage piece, and two sides of the second water storage piece are in contact with the electrostatic driving assembly.
9. The display panel of claim 8, wherein the electrostatic drive assembly comprises: The first driving piece and the second driving piece are respectively arranged at two sides of the second water storage piece, one side of each driving piece is contacted with the side surface of the second water storage piece, and the other side is contacted with the side surface of the light-emitting layer of the corresponding light-emitting unit; wherein the top surface of the light emitting layer, the top surface of the first driving member, the top surface of the second driving member and the top end of the second water storage member are positioned on the same horizontal plane.
10. The display panel of claim 7, wherein the display panel comprises, The temperature-sensitive water storage layer, the buffer water storage layer and/or the water storage component comprise polymer materials with micropore structures; The electrostatic actuation layer and/or the electrostatic actuation assembly comprises a dielectric elastomeric material.

Description

Display panel Technical Field The disclosure belongs to the technical field of display driving, and particularly relates to a display panel. Background However, the core organic functional layers such as the OLED luminescent layer and the hole transport layer usually have extremely high insulation resistance, so that static charges are extremely easy to generate due to friction, induction and the like in the production and processing, module assembly and even daily use; However, the OLED pixel structure of the related art lacks a conductive path, the substrate is insulated, accumulated static charges cannot be discharged in time, a high electric field is formed locally, dielectric breakdown or electrode damage of an organic functional layer is very easy to cause dark spots, brightness decay or complete failure of the pixel, and thus the reliability and service life of the OLED product are affected. Therefore, how to realize the electrostatic discharge in the OLED pixel structure has become a current urgent problem to be solved. Disclosure of Invention According to the display panel provided by the application, through the synergistic effect of the temperature-sensitive water storage layer, the buffer water storage layer and the static driving layer, the environment humidity is actively supplemented under the working condition of high temperature and low humidity, the risk of static electricity generation and accumulation is reduced, and the antistatic capability and long-term reliability of an OLED display product under a complex use environment are obviously improved. The application provides a display panel which comprises a display area and a frame area arranged around the display area, wherein the display area is at least provided with a first light-emitting unit and a second light-emitting unit which are arranged at intervals, at least one humidity compensation structure is arranged in the frame area, the humidity compensation structure comprises a temperature-sensitive water storage layer, a buffer water storage layer and an electrostatic driving layer, the temperature-sensitive water storage layer is configured to release water vapor when the current environment temperature reaches a preset threshold value, the buffer water storage layer at least partially covers the temperature-sensitive water storage layer and is communicated with the temperature-sensitive water storage layer, the electrostatic driving layer is configured to receive and store the water vapor released by the temperature-sensitive water storage layer, and the electrostatic driving layer is arranged on one side, away from the temperature-sensitive water storage layer, of the buffer water storage layer and is communicated with the buffer water storage layer, and is configured to generate a conduction channel in response to static charge in the current environment, so that the water vapor stored in the buffer water storage layer is released into the current environment through the conduction channel. The technical scheme provided by the application has at least the following beneficial effects: The application achieves the aim of improving the electrostatic discharge efficiency by arranging a humidity compensation structure formed by the cooperation of the temperature-sensitive water storage layer, the buffer water storage layer and the electrostatic driving layer in the frame area at the periphery of the display area and dynamically adjusting the ambient humidity at the periphery of the display area. When static charge accumulation occurs in the display area, the static driving layer opens a channel to enable the water vapor stored in the buffer water storage layer to be controllably released into the environment, increase local humidity and improve air conductivity, thereby accelerating charge dissipation and assisting static discharge in the display area. Therefore, through the synergistic effect of the temperature-sensitive water storage layer, the buffer water storage layer and the static driving layer, the application actively supplements the environmental humidity under the working condition of high temperature and low humidity, reduces the risk of static generation and accumulation, and remarkably improves the antistatic capability and long-term reliability of the OLED display product under the complex use environment. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort. Fig. 1 is a schematic cross-sectional view of a first display panel according to the related art. Fig. 2 is a schematic cross-sectional view of a first display