CN113936597B - Display panel, display device and brightness compensation method - Google Patents
Display panel, display device and brightness compensation method Download PDFInfo
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- CN113936597B CN113936597B CN202111250176.9A CN202111250176A CN113936597B CN 113936597 B CN113936597 B CN 113936597B CN 202111250176 A CN202111250176 A CN 202111250176A CN 113936597 B CN113936597 B CN 113936597B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The embodiment of the application provides a display panel, display equipment and a brightness compensation method. In the display panel provided by the embodiment of the application, the light leakage detection module is arranged on one side of the electrode layer, which is far away from the light emitting direction of the display panel, so as to detect the light intensity information of the light leakage of the light emitting layer, and the brightness compensation unit is used for carrying out brightness compensation on the light emitting layer according to the light intensity information, so that the light emitting brightness of the light emitting layer can be kept within a set range, the display brightness of the display panel can be kept within the set range, and the use experience of a user can be ensured.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, display equipment and a brightness compensation method.
Background
With the development of display technology, display devices are increasingly applied to various scenes. However, as the service time of the display device is prolonged, the structures such as the driving unit and the light emitting unit in the display panel of the display device are aged, so that the light emitting brightness of the light emitting unit is reduced, and further the display brightness of the display panel is reduced, which affects the use experience of users.
Disclosure of Invention
The application provides a display panel, display equipment and a brightness compensation method aiming at the defects of the prior art, which are used for solving the technical problem that the brightness of a light-emitting unit in the display panel is reduced due to aging in the prior art.
In a first aspect, an embodiment of the present application provides a display panel, including:
a light emitting layer;
the electrode layer is arranged on one side of the light-emitting layer;
the light leakage detection module is arranged on one side of the electrode layer, which is far away from the light emitting direction of the display panel, and is used for detecting and transmitting light intensity information of light leakage of the light emitting layer;
and the brightness compensation unit is electrically connected with the light leakage detection module and is used for carrying out brightness compensation on the luminous layer according to the light intensity information.
In a second aspect, an embodiment of the present application provides a display apparatus, including: the controller and the display panel provided in the first aspect are electrically connected with the light leakage detection module and the brightness compensation unit in the display panel.
In a third aspect, an embodiment of the present application provides a brightness compensation method, which is applied to the display device provided in the second aspect, and includes:
receiving light intensity information of light leakage of the light emitting layer detected by the light leakage detection module;
and controlling the brightness compensation unit to carry out brightness compensation on the light-emitting layer according to the light intensity information.
The technical scheme provided by the embodiment of the application has the beneficial technical effects that:
in the display panel provided by the embodiment of the application, the light leakage detection module is arranged on one side of the electrode layer, which is far away from the light emitting direction of the display panel, so as to detect the light intensity information of the light leakage of the light emitting layer, and the brightness compensation unit is used for carrying out brightness compensation on the light emitting layer according to the light intensity information, so that the light emitting brightness of the light emitting layer can be kept within a set range, the display brightness of the display panel can be kept within the set range, and the use experience of a user can be ensured.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a first display panel according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a frame structure of the first display panel shown in FIG. 1 according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of an anode structure of the first display panel shown in FIG. 1 according to an embodiment of the present application;
FIG. 4 is a graph showing the relationship between the thickness and reflectivity of the second conductive layer in the anode structure shown in FIG. 3 according to an embodiment of the present application;
FIG. 5 is a graph showing the relationship between the thickness and the transmittance of the second conductive layer in the anode structure shown in FIG. 3 according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a second display panel according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a third display panel according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a fourth display panel according to an embodiment of the present application;
fig. 9 is a schematic diagram of a frame structure of a display device according to an embodiment of the present application;
fig. 10 is a flowchart of a brightness compensation method according to an embodiment of the present application;
fig. 11 is a flowchart of another brightness compensation method according to an embodiment of the application.
Reference numerals illustrate:
100-a display panel;
10-an array substrate; 11-a substrate; 12-a buffer layer; 13-a thin film transistor;
a 20-light emitting layer; 21-a light emitting unit; 21 a-a first light emitting unit; 21 b-a second light emitting unit; 21 c-a third light emitting unit;
31-anode structure; 311-a first conductive layer; 312-a second conductive layer; 313-a third conductive layer; 32-a cathode layer;
40-a light leakage detection module; 41-a substrate layer; 42-an optical sensing layer; 421-an optical sensing unit;
A 50-brightness compensation unit;
60-a filter layer; 61-a first filter unit; 62-a second filter unit; 63-a third filter unit;
70-packaging layer;
200-controller.
Detailed Description
The present application is described in detail below, examples of embodiments of the application are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. Further, if detailed description of the known technology is not necessary for the illustrated features of the present application, it will be omitted. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
The inventor of the present application researches and discovers that, with the extension of working time, structures such as a driving unit, a light-emitting unit, etc. in a display panel of the present display device are aged, so that the light-emitting brightness of the light-emitting unit is reduced, and further the display brightness of the display panel is reduced, which affects the use experience of users.
Particularly, for an OLED (Organic Light-Emitting Diode) display panel, as the working time is prolonged, the Light-Emitting material in the Organic Light-Emitting layer is gradually aged and degraded, and the TFT for driving the Organic Light-Emitting layer to emit Light is aged, so that the Light-Emitting brightness of the Organic Light-Emitting layer is significantly reduced, and further the display brightness of the OLED display panel is reduced, which affects the use experience of users.
For the OLED display panel applied to light complex environments such as vehicle-mounted scenes and outdoor scenes, the OLED display panel is always required to be kept at higher display brightness in the display process, and the display effect of the OLED display panel can be seriously affected due to the reduction of the display brightness of the OLED display panel, so that the use experience of a user is further affected.
The application provides a display panel, display equipment and a brightness compensation method, which aim to solve the technical problems in the prior art.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments.
An embodiment of the present application provides a display panel, a schematic structural diagram of which is shown in fig. 1, including: the light emitting layer 20, the electrode layer, the light leakage detecting module 40 and the brightness compensating unit 50.
An electrode layer disposed on one side of the light emitting layer 20; the light leakage detection module 40 is disposed at a side of the electrode layer away from the light emitting direction of the display panel 100, and is used for detecting and transmitting light intensity information of the light leakage of the light emitting layer 20; the brightness compensation unit 50 is electrically connected to the light leakage detection module 40, and is configured to perform brightness compensation on the light emitting layer 20 according to the light intensity information.
In the display panel 100 provided by the embodiment of the application, the light leakage detection module 40 is arranged at one side of the electrode layer far away from the light emitting direction of the display panel 100 to detect the light intensity information of the light leakage of the light emitting layer 20, and the brightness compensation unit 50 performs brightness compensation on the light emitting layer 20 according to the light intensity information, so that the light emitting brightness of the light emitting layer 20 can be kept within a set range, the display brightness of the display panel 100 can be kept within the set range, and the use experience of a user can be ensured.
In the embodiment of the application, the electrode layer is disposed on one side of the light emitting layer 20 and electrically connected to the light emitting layer 20. The light leakage detection module 40 is disposed at a side of the electrode layer away from the light emitting direction of the display panel 100, so as to detect and send the intensity information of the light transmitted by the light emitting layer 20 through the electrode layer, that is, the light leakage detection module 40 is used for detecting and sending the intensity information of the light leakage of the light emitting layer 20. The brightness compensation unit 50 receives the light intensity information of the light leakage sent by the light leakage detection module 40, and performs brightness compensation on the light emitting layer 20 according to the light intensity information.
As can be appreciated by those skilled in the art, for the conventional display panel 100, due to limitations of manufacturing materials, manufacturing processes, etc., the electrode layer still has a certain light transmittance, so that a portion of the light emitted from the light emitting layer 20 passes through the electrode layer, thereby forming light leakage. In the display panel 100 provided by the embodiment of the application, the light leakage detection module 40 is arranged to detect the light intensity information of the light leakage of the light emitting layer 20, so that the light leakage detection module 40 is prevented from being arranged in the light emergent direction of the display panel 100, the light emergent of the display panel 100 is prevented from being influenced by the light leakage detection module 40, and the display effect of the display panel 100 can be ensured.
In the embodiment of the present application, as shown in fig. 1, the light emitting direction of the display panel is indicated by an arrow line.
It should be noted that, for the top emission type display panel 100 and the bottom emission type display panel 100, since the light emitting directions of the display panels 100 are different, the types and the arrangement manners of the electrode layers are different, and the specific structures of the top emission type display panel 100 and the bottom emission type display panel 100 will be described in detail later, which will not be repeated here.
In one embodiment of the present application, the electrode layer includes an anode structure 31, and the light leakage detection module 40 is disposed on a side of the anode structure 31 away from the light emitting layer 20.
In the embodiment of the application, the display panel 100 shown in fig. 1 is a top emission display panel 100, the electrode layer is an anode structure 31, as shown in fig. 1, the anode structure 31 is disposed on one side of the light emitting layer 20, specifically, the anode structure 31 is disposed on one side of the light emitting layer 20 away from the light emitting direction of the display panel 100, and the light leakage detection module 40 is disposed on one side of the anode structure 31 away from the light emitting layer 20.
In the embodiment of the present application, the light leakage detecting module 40 is configured to detect intensity information of light transmitted through the anode structure 31 by the light emitting layer 20, that is, the light leakage detecting module 40 is configured to detect light leakage intensity information of the light emitting layer 20, and the brightness compensating unit 50 receives the light leakage intensity information sent by the light leakage detecting module 40, and performs brightness compensation on the light emitting layer 20 according to the light leakage intensity information. Accordingly, the brightness of the light emitting layer 20 can be kept within a set range, and the display brightness of the display panel 100 can be kept within the set range, so that the use experience of the user can be ensured.
Meanwhile, in the embodiment of the present application, the light emitted by the light emitting layer 20 is mainly emitted through the cathode layer 32 disposed on the other side of the light emitting layer 20, so that the light leakage detection module 40 can be prevented from affecting the light emission of the display panel 100, and the display effect of the display panel 100 can be ensured.
In one embodiment of the present application, the anode structure 31 includes a first conductive layer 311, a second conductive layer 312, and a third conductive layer 313, which are sequentially stacked; the thickness of the second conductive layer 312 ranges from 50-100 nanometers.
In the embodiment of the present application, as shown in fig. 3, the anode structure 31 includes a first conductive layer 311, a second conductive layer 312 and a third conductive layer 313, wherein the first conductive layer 311 is disposed on one side of the array substrate 10, the second conductive layer 312 is disposed on one side of the first conductive layer 311 away from the array substrate 10, and the third conductive layer 313 is disposed on one side of the second conductive layer 312 away from the array substrate 10. Alternatively, the first conductive layer 311 and the third conductive layer 313 are made of an ITO (Indium Tin Oxide) material, and the second conductive layer 312 is made of Ag (silver).
In the embodiment of the present application, the thickness of the anode structure 31 is reduced, so that the light intensity of the leaked light can be increased, and the sensitivity of the light leakage detection module 40 for detecting the leaked light can be improved. For the top emission type display panel 100, the reflectivity of the anode structure 31 needs to be satisfied so that the light emitted from the light emitting layer 20 mainly exits through the cathode layer 32 disposed at the other side of the light emitting layer 20. In the prior art, the thicknesses of the first conductive layer 311 and the third conductive layer 313 are generally smaller, and the thickness of the second conductive layer 312 is much larger than the thicknesses of the first conductive layer 311 and the third conductive layer 313, alternatively, in the embodiment of the present application, the thicknesses of the first conductive layer 311 and the third conductive layer 313 are both 7 nm, and it is not easy to thin the first conductive layer 311 and the third conductive layer 313, so in the embodiment of the present application, the light leakage amount of the anode structure 31 can be improved by thinning the second conductive layer 312.
Optionally, the thickness of the second conductive layer 312 is not less than 50 nm and not more than 100 nm, by thinning the second conductive layer 312, not only the reflectivity of the anode structure 31 can be ensured to meet the requirement, but also the light intensity of the light leakage passing through the anode structure 31 can be increased under the condition of ensuring that the microcavity efficiency is not greatly changed, so that the sensitivity of the light leakage detection module 40 for detecting the light leakage can be improved.
Optionally, the transmittance of the second conductive layer 312 ranges from 0.06% to 9.89%.
In the embodiment of the present application, the inventors of the present application respectively obtain the relationship diagrams shown in fig. 4 and 5 by testing the reflectivity and the transmittance of the second conductive layer 312 with different thicknesses.
In fig. 4, the ordinate indicates the reflectance; the abscissa indicates the wavelength of light in nanometers. In fig. 4, the relationship between the reflectance of the second conductive layer 312 and the wavelength of light with different thicknesses is represented by five types of curve segments, respectively, and as can be seen from fig. 4, the reflectance of the second conductive layer 312 gradually increases with the increase of the wavelength of light for the second conductive layer 312 with the same thickness. The reflectance of the second conductive layer 312 of various thicknesses in fig. 4 is illustrated by blue light represented by 460 nm, green light represented by 530 nm, and red light represented by 620 nm in the present application, as detailed in table 1. The units of wavelength and thickness are nm (nanometers) in Table 1.
TABLE 1
Specifically, for light having a wavelength of 460 nm, the reflectance of the second conductive layer 312 having a thickness of 100 nm is 89.61%, the reflectance of the second conductive layer 312 having a thickness of 90 nm is 89.28%, the reflectance of the second conductive layer 312 having a thickness of 80 nm is 88.61%, the reflectance of the second conductive layer 312 having a thickness of 70 nm is 87.28%, the reflectance of the second conductive layer 312 having a thickness of 60 nm is 84.67%, and the reflectance of the second conductive layer 312 having a thickness of 50 nm is 79.61%.
For light having a wavelength of 530 nanometers, the reflectance of the second conductive layer 312 having a thickness of 100 nanometers is 94.06%, the reflectance of the second conductive layer 312 having a thickness of 90 nanometers is 93.90%, the reflectance of the second conductive layer 312 having a thickness of 80 nanometers is 93.56%, the reflectance of the second conductive layer 312 having a thickness of 70 nanometers is 92.84%, the reflectance of the second conductive layer 312 having a thickness of 60 nanometers is 91.36%, and the reflectance of the second conductive layer 312 having a thickness of 50 nanometers is 88.27%.
For light having a wavelength of 620 nm, the reflectance of the second conductive layer 312 having a thickness of 100 nm is 96.11%, the reflectance of the second conductive layer 312 having a thickness of 90 nm is 96.02%, the reflectance of the second conductive layer 312 having a thickness of 80 nm is 95.84%, the reflectance of the second conductive layer 312 having a thickness of 70 nm is 95.43%, the reflectance of the second conductive layer 312 having a thickness of 60 nm is 94.55%, and the reflectance of the second conductive layer 312 having a thickness of 50 nm is 92.65%.
As can be seen from the above data in conjunction with fig. 4, as the thickness is reduced, the reflectivity of the second conductive layer 312 gradually decreases, but the magnitude of the decrease is smaller, so that the reflectivity of the second conductive layer 312 can be ensured to meet the requirement.
Specifically, in fig. 5, the ordinate indicates the transmittance; the abscissa indicates the wavelength of light in nanometers. In fig. 5, the relationship between the transmittance of the second conductive layer 312 and the wavelength of light with different thicknesses is represented by five types of curve segments, and it is understood from fig. 5 that, for the second conductive layer 312 with the same thickness, the transmittance of the second conductive layer 312 gradually decreases as the wavelength of light increases. The transmittance of the second conductive layer 312 of various thicknesses in fig. 5 for blue light represented by 460 nm, green light represented by 530 nm, and red light represented by 620 nm is described in detail in table 2. The units of wavelength and thickness are nm (nanometers) in Table 2.
TABLE 2
Specifically, for light having a wavelength of 460 nm, the transmittance of the second conductive layer 312 having a thickness of 100 nm was 0.31%, the transmittance of the second conductive layer 312 having a thickness of 90 nm was 0.62%, the transmittance of the second conductive layer 312 having a thickness of 80 nm was 1.25%, the transmittance of the second conductive layer 312 having a thickness of 70 nm was 2.51%, the transmittance of the second conductive layer 312 having a thickness of 60 nm was 5.00%, and the transmittance of the second conductive layer 312 having a thickness of 50 nm was 9.89%.
For light having a wavelength of 530 nm, the transmittance of the second conductive layer 312 having a thickness of 100 nm was 0.13%, the transmittance of the second conductive layer 312 having a thickness of 90 nm was 0.27%, the transmittance of the second conductive layer 312 having a thickness of 80 nm was 0.57%, the transmittance of the second conductive layer 312 having a thickness of 70 nm was 1.20%, the transmittance of the second conductive layer 312 having a thickness of 60 nm was 2.54%, and the transmittance of the second conductive layer 312 having a thickness of 50 nm was 5.38%.
For light having a wavelength of 620 nm, the transmittance of the second conductive layer 312 having a thickness of 100 nm is 0.06%, the transmittance of the second conductive layer 312 having a thickness of 90 nm is 0.13%, the transmittance of the second conductive layer 312 having a thickness of 80 nm is 0.29%, the transmittance of the second conductive layer 312 having a thickness of 70 nm is 0.64%, the transmittance of the second conductive layer 312 having a thickness of 60 nm is 1.40%, and the transmittance of the second conductive layer 312 having a thickness of 50 nm is 3.09%.
As can be seen from the above data and fig. 5, as the thickness is reduced, the transmittance of the second conductive layer 312 is gradually increased, so as to increase the light leakage amount of the anode structure 31, increase the light intensity of the light leakage passing through the anode structure 31, and improve the sensitivity of the light leakage detection module 40 for detecting the light leakage.
From the analysis, when the thickness of the second conductive layer 312 is changed from 100 nm to 70 nm, the reflectance of blue light represented by 460 nm is changed from 89.61% to 87.28%, the reflectance of green light represented by 530 nm is changed from 94.06% to 92.84%, and the reflectance of red light represented by 620 nm is changed from 96.11% to 95.43%. The magnitude of the decrease in the reflectivity of the second conductive layer 312 is small, so that the reflectivity of the second conductive layer 312 can be ensured to meet the requirements.
When the thickness of the second conductive layer 312 is changed from 100 nm to 70 nm, the transmittance of blue light represented by 460 nm is changed from 0.31% to 2.51%, the transmittance of green light represented by 530 nm is changed from 0.13% to 0.57%, and the transmittance of red light represented by 620 nm is changed from 0.06% to 0.64%. That is, the transmittance of the second conductive layer 312 at the corresponding blue light emitting unit 21 increases by 8 times, the transmittance of the second conductive layer 312 at the corresponding green light emitting unit 21 increases by 4 times, and the transmittance of the second conductive layer 312 at the corresponding red light emitting unit 21 increases by 10 times.
It should be noted that, in the case that the reflectivity of the anode structure 31 can be ensured to meet the requirement, the thickness of the second conductive layer 312 in the anode structure 31 can be further reduced to improve the sensitivity of the light leakage detection module 40 for detecting light leakage
In one embodiment of the present application, the light leakage detection module 40 includes an optical sensing layer 42 and a base layer 41; the optical sensing layer 42 includes an optical sensing unit 421.
In the embodiment of the present application, as shown in fig. 1, the light leakage detection module 40 includes an optical sensing layer 42 and a substrate layer 41, the optical sensing layer 42 is disposed on a side of the substrate layer 41 close to the light emitting layer 20, and the optical sensing layer 42 is used for detecting light intensity information of light leakage of the light emitting layer 20.
In the embodiment of the present application, the optical sensor layer includes an optical sensing unit 421, where the optical sensing unit 421 is an optical sensor, and optionally, the optical sensor includes at least one of a phototransistor, an electrostatic induction transistor, and other photosensitive devices.
It should be noted that, in the embodiment of the present application, the light leakage detection module 40 may be directly integrated on the display panel 100, or may be separately prepared and then attached to one side of the electrode layer of the display panel 100, and those skilled in the art may select according to the actual production line.
In one embodiment of the present application, the light emitting layer 20 includes light emitting units 21, and an optical sensing unit 421 covers at least one light emitting unit 21 in front projection of the light emitting layer 20.
In the embodiment of the present application, as shown in fig. 1, the light emitting layer 20 includes a plurality of light emitting units 21, and optionally, each light emitting unit 21 has one of red, green and blue light emitting colors. One optical sensing unit 421 in the optical sensor layer corresponds to at least one light emitting unit 21, i.e. the orthographic projection of one optical sensing unit 421 on the light emitting layer 20 covers at least one light emitting unit 21. Alternatively, as shown in fig. 1, one optical sensing unit 421 corresponds to one light emitting unit 21, so that the optical sensing unit 421 can individually detect light intensity information of leaked light of the corresponding light emitting unit 21.
It will be understood by those skilled in the art that, in order to reduce the structural complexity of the display panel 100 and improve the sound field efficiency of the display panel 100, a plurality of detection areas may be preset in the display panel 100, each detection area includes a plurality of light emitting units 21 having different light emitting colors, light leakage of the plurality of light emitting units 21 may be mixed to form white light, and accordingly, each detection area is correspondingly provided with an optical sensing unit 421, and light intensity information of the light leakage of the white light in the detection area is detected by the optical sensing unit 421. The brightness compensation unit 50 compensates the white light brightness of the light emitting layer 20 according to the light intensity information of the white light leakage, so that the brightness of the light emitting layer 20 can be kept within a set range, and the use experience of a user is ensured.
In an embodiment of the application, the display panel 100 further includes a filter layer 60, where the filter layer 60 is disposed on a side of the light leakage detection module 40 near the light emitting layer 20, and is used for transmitting light with a set wavelength range.
In the embodiment of the present application, as shown in fig. 6, the filter layer 60 is located between the light leakage detection module 40 and the anode structure 31, and is used for allowing the light with the set wavelength range in the light leakage of the light emitting layer 20 to pass through. Alternatively, the filter layer 60 may be prepared together with the light leakage detecting module 40, or may be directly prepared on the side of the anode structure 31 away from the light emitting layer 20. Alternatively, the material of the filter layer 60 may be the same as that of the photoresist.
In the embodiment of the application, the filter layer 60 can pass one of red light, green light and blue light in the light leakage of the light emitting layer 20, so that the corresponding light leakage detection module 40 can detect the light intensity information of the red light, the green light or the blue light in the light leakage, and the brightness compensation unit 50 compensates the brightness of the red light, the green light or the blue light of the light emitting layer 20 according to the light intensity information of the red light, the green light or the blue light, so that the accuracy of the compensation of the red light, the green light and the blue light in the light emitting layer 20 can be improved, and the phenomenon of color cast of the display panel 100 can be avoided while the brightness of the light emitting layer 20 is kept within a set range, thereby further guaranteeing the use experience of users.
As will be appreciated by those skilled in the art, for the bottom emission display panel 100, the filter layer 60 is located between the light leakage detection module 40 and the cathode layer 32.
In one embodiment of the present application, the light emitting layer 20 includes a first light emitting unit 21a, a second light emitting unit 21b, and a third light emitting unit 21c; the filter layer 60 includes a first filter unit 61, a second filter unit 62, and a third filter unit 63, the first filter unit 61 is used for light leakage through the first light emitting unit 21a, the second filter unit 62 is used for light leakage through the second light emitting unit 21b, and the third filter unit 63 is used for light leakage through the third light emitting unit 21 c.
In the embodiment of the present application, as shown in fig. 6, the light emitting layer 20 includes a first light emitting unit 21a, a second light emitting unit 21b, and a third light emitting unit 21c, and the filter layer 60 includes a first filter unit 61 for light leakage through the first light emitting unit 21a, a second filter unit 62 for light leakage through the second light emitting unit 21b, and a third filter unit 63 for light leakage through the third light emitting unit 21 c.
Alternatively, the first light emitting unit 21a is a red light emitting unit 21, the second light emitting unit 21b is a green light emitting unit 21, the third light emitting unit 21c is a blue light emitting unit 21, and accordingly, the first filter unit 61 can only transmit red light leakage, the second filter unit 62 can only transmit green light leakage, and the third filter unit 63 can only transmit blue light leakage. Thereby, the light leakage detection module 40 can detect the light intensity information of red light, green light and blue light in the light leakage, and the brightness compensation unit 50 compensates the red light brightness of the first light emitting unit 21a, compensates the green light brightness of the second light emitting unit 21b or compensates the blue light brightness of the third light emitting unit 21c according to the light intensity information of the red light, the green light and the blue light, so that the accuracy of the red light, the green light and the blue light brightness compensation in the light emitting layer 20 can be improved, the phenomenon of color cast of the display panel 100 can be avoided while the light emitting brightness of the light emitting layer 20 is kept within a set range, and the use experience of a user is further ensured.
It should be noted that, in fig. 6, the texture of the first filter unit 61 is the same as the texture of the first light emitting unit 21a, but the color filtered by the first filter unit 61 is the same as the color emitted by the first light emitting unit 21 a. Accordingly, the second filter unit 62 and the second light emitting unit 21b have the same texture, and the third filter unit 63 and the third light emitting unit 21c have the same texture.
In one embodiment of the present application, the front projection of the filter layer 60 in the front projection of the light emitting layer 20, one front projection of the first filter unit 61 covers at least one first light emitting unit 21a, one front projection of the second filter unit 62 covers at least one second light emitting unit 21b, and one front projection of the third filter unit 63 covers at least one third light emitting unit 21c.
In the embodiment of the present application, a first light-emitting unit 21a corresponds to a first light-filtering unit 61, that is, the front projection of the first light-filtering unit 61 covers the first light-emitting unit 21a; a second light-emitting unit 21b corresponds to one second light-filtering unit 62, i.e. the orthographic projection of one second light-filtering unit 62 covers one second light-emitting unit 21b; a third filter unit 63 corresponds to a third light-emitting unit 21c, i.e. the orthographic projection of a third filter unit 63 covers a third light-emitting unit 21c.
Alternatively, one first filter unit 61 may correspond to a plurality of first light emitting units 21a, one second filter unit 62 to a plurality of second light emitting units 21b, and one third filter unit 63 to a plurality of third light emitting units 21c.
Alternatively, in order to facilitate preparation of the filter layer, one first filter unit 61 in the filter layer may correspond to the plurality of first light emitting units 21a, the plurality of second light emitting units 21b, and the plurality of third light emitting units 21c, one second filter unit 62 may correspond to the plurality of second light emitting units 21b, the plurality of first light emitting units 21a, and the plurality of third light emitting units 21c, and one third filter unit 63 may correspond to the plurality of third light emitting units 21c, the plurality of first light emitting units 21a, and the plurality of second light emitting units 21b.
In the embodiment of the present application, each of the first filtering unit 61, the second filtering unit 62 and the third filtering unit 63 may correspond to at least one optical sensing unit 421, so that the optical sensing unit 421 can individually detect the corresponding light intensity information of the light leakage passing through the first filtering unit 61, the second filtering unit 62 and the third filtering unit 63. The brightness compensation unit 50 performs red brightness compensation on the first light emitting unit 21a corresponding to the first light filtering unit 61, alkaline green brightness compensation on the second light emitting unit 21b corresponding to the second light filtering unit 62, or blue brightness compensation on the third light emitting unit 21c corresponding to the third light filtering unit 63 according to the corresponding light intensity information of the leaked light, so that the accuracy of red light, green light and blue brightness compensation in the light emitting layer 20 can be improved, and the phenomenon of color cast of the display panel 100 can be avoided while the brightness of the light emitting layer 20 is kept within the set range, thereby further guaranteeing the use experience of users.
In an embodiment of the application, the display panel 100 further includes an array substrate 10, the light emitting layer 20 and the anode structure 31 are disposed on one side of the array substrate 10, and the light leakage detection module 40 is disposed on the other side of the array substrate 10.
In the embodiment of the present application, as shown in fig. 1, the display panel 100 further includes an array substrate 10, the anode structure 31 is located at one side of the array substrate 10, the light emitting layer 20 is located at one side of the anode structure 31 away from the array substrate 10, and the light leakage detection module 40 is disposed at the other side of the array substrate 10.
Alternatively, as shown in fig. 7, the array substrate 10 includes a thin film transistor 13, and the thin film transistor 13 is electrically connected with an anode structure 31; in a direction parallel to the display panel 100, the light emitting unit 21 in the light emitting layer 20 is projected on the front surface of the array substrate 10 to be separated from the corresponding thin film transistor 13. The light emitting unit 21 includes any one of a first light emitting unit 21a, a second light emitting unit 21b, and a third light emitting unit 21 c.
Optionally, the array substrate 10 further includes a substrate 11 and a buffer layer 12, the buffer layer 12 is disposed on one side of the substrate 11, and the thin film transistor 13 is disposed on a side of the buffer layer 12 away from the substrate 11.
It should be noted that the display panel further includes an encapsulation layer 70 as shown in fig. 7.
In one embodiment of the present application, the electrode layer includes a cathode layer 32, and the light leakage detection module 40 is disposed on a side of the cathode layer 32 away from the light emitting layer 20.
In the embodiment of the application, the display panel 100 shown in fig. 8 is a bottom emission type display panel 100, the electrode layer is a cathode layer 32, as shown in fig. 8, the cathode layer 32 is disposed on one side of the light emitting layer 20, specifically, the cathode layer 32 is disposed on one side of the light emitting layer 20 away from the light emitting direction of the display panel 100, and the light leakage detection module 40 is disposed on one side of the cathode layer 32 away from the light emitting layer 20.
In the embodiment of the present application, the light leakage detecting module 40 is configured to detect intensity information of light of the light emitting layer 20 transmitted through the cathode layer 32, that is, the light leakage detecting module 40 is configured to detect light leakage of the light emitting layer 20, and the brightness compensating unit 50 receives the light leakage information sent by the light leakage detecting module 40 and performs brightness compensation on the light emitting layer 20 according to the light leakage information. Accordingly, the brightness of the light emitting layer 20 can be kept within a set range, and the display brightness of the display panel 100 can be kept within the set range, so that the use experience of the user can be ensured.
Meanwhile, in the embodiment of the present application, the light emitted by the light emitting layer 20 is mainly emitted through the anode structure 31 disposed on the other side of the light emitting layer 20, so that the light leakage detection module 40 can be prevented from affecting the light emission of the display panel 100, and the display effect of the display panel 100 can be ensured.
Based on the same inventive concept, an embodiment of the present application provides a display apparatus including: the controller and the display panel 100 provided by the above embodiments are electrically connected to the light leakage detection module 40 and the brightness compensation unit 50 in the display panel 100.
In the embodiment of the present application, as shown in fig. 9, the light leakage detection module 40 and the brightness compensation unit 50 of the display panel 100 are electrically connected to the controller. In the embodiment of the present application, since the display device adopts any one of the display panels 100 provided in the foregoing embodiments, the principle and technical effects thereof are shown in the foregoing embodiments, and are not repeated herein.
It should be noted that, the display device provided by the embodiment of the application includes, but is not limited to, smart wearable devices, mobile phones, tablet computers, notebook computers, and the like. Alternatively, in the embodiment of the present application, the display device may be a vehicle-mounted display device or a display device applied outdoors.
Based on the same inventive concept, an embodiment of the present application provides a brightness compensation method applied to the display device provided in the above embodiment, and a flow chart of the method is shown in fig. 10, and the method includes the following steps S1001 to S1002:
S1001, light intensity information of the light leakage of the light emitting layer 20 detected by the light leakage detection module 40 is received.
Optionally, the controller receives light intensity information of the light leakage of the light emitting layer 20 detected by the light leakage detection module 40 in the display panel 100.
S1002, the control luminance compensation unit 50 performs luminance compensation on the light emitting layer 20 according to the light intensity information.
Alternatively, the controller controls the luminance compensation unit 50 to perform luminance compensation on the light emitting layer 20 according to the light intensity information.
In one embodiment of the present application, the specific method for controlling the brightness compensation unit 50 to perform brightness compensation on the light emitting layer 20 according to the light intensity information in the step S1002 is shown in fig. 11, and the flowchart includes the following steps S10021-S10023:
s10021, determining whether the attenuation amplitude of the light intensity information of the leaked light is larger than an attenuation amplitude threshold value; when the attenuation amplitude of the light intensity information of the leaked light is greater than the attenuation amplitude threshold, executing step S10022; when the attenuation amplitude of the light intensity information of the leaked light is less than or equal to the attenuation amplitude threshold, the process returns to step S1001.
Optionally, the controller determines whether the attenuation amplitude of the light intensity information of the light leakage is greater than an attenuation amplitude threshold according to the light intensity information of the light leakage.
Alternatively, when the attenuation amplitude of the light intensity information of the leaked light is greater than the attenuation amplitude threshold, the process returns to step S1001.
S10022, the attenuation magnitude threshold determines the brightness compensation amount based on the light intensity information of the leaked light.
Optionally, the controller determines the brightness compensation amount based on the light intensity information of the leaked light when the attenuation amplitude of the light intensity information of the leaked light is greater than the attenuation amplitude threshold.
Optionally, the controller receives light intensity information of the light leakage of the light emitting layer 20 detected by the light leakage detecting module 40 for the first time in the display panel 100 as initial brightness information. The light intensity information of the light leakage which is subsequently received by the controller is compared with the initial brightness information, and the percentage of the ratio of the light intensity information of the light leakage to the initial brightness information is taken as the attenuation amplitude of the light intensity information of the light leakage according to the difference value of the light intensity information of the light leakage and the initial brightness information. Alternatively, the attenuation magnitude threshold is 1%.
Optionally, in order to reduce the detection workload of the light leakage detection module 40, in the embodiment of the present application, a certain time interval may be provided between two consecutive light intensity information of detecting light leakage of the light emitting layer 20 by the light leakage detection module 40. Optionally, the time interval between two consecutive detections of the light leakage detection module 40 is 10 hours.
S10023, the control luminance compensation unit 50 performs luminance compensation on the light emitting layer 20 according to the luminance compensation amount.
Alternatively, the controller controls the luminance compensation unit 50 to perform luminance compensation on the light emitting layer 20 according to the luminance compensation amount. Alternatively, the controller controls the luminance compensation unit 50 to compensate the driving voltage to the thin film transistor 13 according to the luminance compensation amount to compensate the driving current, thereby completing the luminance compensation of the light emitting layer 20.
In one embodiment of the present application, the step S1001 of receiving the information of the light intensity of the light leakage of the light emitting layer 20 detected by the light leakage detecting module 40 includes:
light intensity information of light leakage of the first, second and third light emitting units 21a, 21b and 21c of the light emitting layer 20 detected by the light leakage detection module 40 is received.
Alternatively, the controller receives the light intensity information of the light leakage of the first, second and third light emitting units 21a, 21b and 21c of the light emitting layer 20 detected by the light leakage detecting module 40.
And determining a brightness compensation amount based on the light intensity information of the leaked light, comprising:
the first luminance compensation amount of the first light emitting unit 21a, the second luminance compensation amount of the second light emitting unit 21b, and the third luminance compensation amount of the third light emitting unit 21c are determined based on the light intensity information of the leaked light of the first, second, and third light emitting units 21a, 21b, and 21 c.
Alternatively, the controller determines the first luminance compensation amount of the first light emitting unit 21a, the second luminance compensation amount of the second light emitting unit 21b, and the third luminance compensation amount of the third light emitting unit 21c based on the light intensity information of the leaked light of the first, second, and third light emitting units 21a, 21b, and 21 c.
Alternatively, the controller receives the light intensity information of the light leakage of the first, second and third light emitting units 21a, 21b and 21c detected by the light leakage detecting module 40 for the first time in the display panel 100 as initial brightness information of the first, second and third light emitting units 21a, 21b and 21c, respectively. The controller determines a first luminance compensation amount of the first light emitting unit 21a, a second luminance compensation amount of the second light emitting unit 21b, and a third luminance compensation amount of the third light emitting unit 21c based on the light intensity information of the leaked light of the first, second, and third light emitting units 21a, 21b, and 21c and initial luminance information of the first, second, and third light emitting units 21a, 21b, and 21c
And, controlling the luminance compensation unit 50 to perform luminance compensation on the light emitting layer 20 according to the luminance compensation amount, including:
the control luminance compensation unit 50 performs luminance compensation for the first light emitting unit 21a according to the first luminance compensation amount, performs luminance compensation for the second light emitting unit 21b according to the second luminance compensation amount, and performs luminance compensation for the third light emitting unit 21c according to the third luminance compensation amount.
Alternatively, the controller controls the luminance compensation unit 50 to perform luminance compensation for the first light emitting unit 21a according to the first luminance compensation amount, to perform luminance compensation for the second light emitting unit 21b according to the second luminance compensation amount, and to perform luminance compensation for the third light emitting unit 21c according to the third luminance compensation amount.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
in the display panel 100 provided by the embodiment of the application, the light leakage detection module 40 is arranged at one side of the electrode layer far away from the light emitting direction of the display panel 100 to detect the light intensity information of the light leakage of the light emitting layer 20, and the brightness compensation unit 50 performs brightness compensation on the light emitting layer 20 according to the light intensity information, so that the light emitting brightness of the light emitting layer 20 can be kept within a set range, the display brightness of the display panel 100 can be kept within the set range, and the use experience of a user can be ensured.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present application may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present application may also be alternated, altered, rearranged, decomposed, combined, or deleted.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.
Claims (10)
1. A display panel, comprising:
a light emitting layer;
an electrode layer disposed on one side of the light emitting layer, the electrode layer including an anode structure; the anode structure comprises a first conductive layer, a second conductive layer and a third conductive layer which are sequentially laminated; the thickness of the second conductive layer ranges from 50 nanometers to 100 nanometers, the transmittance of the second conductive layer is not less than 0.06 percent and not more than 9.89 percent, and the reflectivity of the second conductive layer is not less than 79.61 percent and not more than 96.11 percent;
the light leakage detection module is arranged on one side, far away from the light-emitting layer, of the anode structure and is used for detecting and sending light intensity information of light leakage of the light-emitting layer;
the brightness compensation unit is electrically connected with the light leakage detection module and is used for carrying out brightness compensation on the luminous layer according to the light intensity information;
the light leakage detection module is arranged on the other side of the array substrate.
2. The display panel of claim 1, wherein the light leakage detection module comprises an optical sensing layer and a substrate layer; the optical sensing layer includes an optical sensing unit.
3. The display panel of claim 2, wherein the light emitting layer comprises light emitting cells, and wherein a front projection of one of the optical sensing cells on the light emitting layer covers at least one of the light emitting cells.
4. The display panel according to claim 1, further comprising a filter layer disposed on a side of the light leakage detection module near the light emitting layer, for transmitting light in a set wavelength range.
5. The display panel according to claim 4, wherein the light-emitting layer includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit;
the filter layer comprises a first filter unit, a second filter unit and a third filter unit, wherein the first filter unit is used for transmitting light leakage of the first light-emitting unit, the second filter unit is used for transmitting light leakage of the second light-emitting unit, and the third filter unit is used for transmitting light leakage of the third light-emitting unit.
6. The display panel of claim 5, wherein in the orthographic projection of the light emitting layer, the orthographic projection of one of the first filter units covers at least one of the first light emitting units, the orthographic projection of one of the second filter units covers at least one of the second light emitting units, and the orthographic projection of one of the third filter units covers at least one of the third light emitting units.
7. A display device, characterized by comprising: the controller and the display panel of any one of claims 1-6, wherein the controller is electrically connected with the light leakage detection module and the brightness compensation unit in the display panel.
8. A brightness compensation method applied to the display device according to claim 7, comprising:
receiving light intensity information of light leakage of the light emitting layer detected by the light leakage detection module;
and controlling a brightness compensation unit to carry out brightness compensation on the light-emitting layer according to the light intensity information.
9. The method according to claim 8, wherein the controlling the brightness compensation unit to perform brightness compensation on the light emitting layer according to the light intensity information includes:
determining whether the attenuation amplitude of the light intensity information of the light leakage is larger than an attenuation amplitude threshold value;
when the attenuation amplitude of the light intensity information of the light leakage is larger than an attenuation amplitude threshold value, determining a brightness compensation amount based on the light intensity information of the light leakage;
and controlling the brightness compensation unit to carry out brightness compensation on the light-emitting layer according to the brightness compensation quantity.
10. The method of claim 9, wherein receiving the information of the light intensity of the light leakage of the light emitting layer detected by the light leakage detection module comprises:
Receiving light intensity information of light leakage of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit of the light-emitting layer detected by the light leakage detection module;
and determining a brightness compensation amount based on the light intensity information of the leaked light, including:
determining a first luminance compensation amount of the first light emitting unit, a second luminance compensation amount of the second light emitting unit, and a third luminance compensation amount of the third light emitting unit based on light intensity information of light leakage of the first light emitting unit, the second light emitting unit, and the third light emitting unit;
and controlling the brightness compensation unit to perform brightness compensation on the light emitting layer according to the brightness compensation amount, including:
controlling the brightness compensation unit to perform brightness compensation on the first light-emitting unit according to the first brightness compensation amount, performing brightness compensation on the second light-emitting unit according to the second brightness compensation amount, and performing brightness compensation on the third light-emitting unit according to the third brightness compensation amount.
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| CN110610684A (en) * | 2019-10-29 | 2019-12-24 | 厦门天马微电子有限公司 | Organic electroluminescent display panel and display device |
| CN113540158A (en) * | 2020-04-15 | 2021-10-22 | 华为技术有限公司 | OLED display panel and terminal equipment |
| CN112018266A (en) * | 2020-09-09 | 2020-12-01 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112201684A (en) * | 2020-10-30 | 2021-01-08 | 京东方科技集团股份有限公司 | Display panel, display device and preparation method of display panel |
| CN113053966A (en) * | 2021-03-09 | 2021-06-29 | 京东方科技集团股份有限公司 | Display panel, brightness compensation method and display device |
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