CN114743510A - Light-emitting panel and display device - Google Patents

Light-emitting panel and display device Download PDF

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Publication number
CN114743510A
CN114743510A CN202210350784.5A CN202210350784A CN114743510A CN 114743510 A CN114743510 A CN 114743510A CN 202210350784 A CN202210350784 A CN 202210350784A CN 114743510 A CN114743510 A CN 114743510A
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China
Prior art keywords
signal
light
module
node
level
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CN202210350784.5A
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Chinese (zh)
Inventor
东强
孙晓平
王丽花
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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Priority to CN202210350784.5A priority Critical patent/CN114743510A/en
Publication of CN114743510A publication Critical patent/CN114743510A/en
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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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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]
    • 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]
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

The invention discloses a light-emitting panel and a display device, wherein the light-emitting panel comprises a power module, a detection module and a plurality of light-emitting modules; the detection module is used for acquiring temperature information and/or light brightness information of the environment where the light-emitting panel is located and feeding back a detection signal to the power supply module according to the temperature information and/or the light brightness information; the power supply module is used for providing a power supply signal for the light-emitting module according to the detection signal so as to increase the power supply signal provided to the light-emitting panel when the brightness and/or the temperature of the environment where the light-emitting panel is located are higher and/or lower, and ensure the light-emitting brightness of the light-emitting module, or reduce the power supply signal provided to the light-emitting module when the brightness and/or the temperature of the environment where the light-emitting panel is located are lower and/or higher, so that the useless power consumption of the light-emitting panel is reduced while the light-emitting brightness of the light-emitting module is ensured, and the standby time of the light-emitting panel is prolonged.

Description

Light-emitting panel and display device
Technical Field
The invention relates to the technical field of display, in particular to a light-emitting panel and a display device.
Background
With the development of display technology, the demand for display devices is increasing, and especially, the display devices which have been pursued have a long standby performance, which requires the display devices to have a low power consumption characteristic.
A display device generally includes a light-emitting panel for providing a light signal, the light-emitting panel generates a large amount of heat during light emission and affects its own light-emitting brightness, that is, the light-emitting panel emits light with a higher temperature, so that the light-emitting brightness of the light-emitting panel is inaccurate and causes a large amount of power consumption; and because lack the luminance detection to the environment that the luminescent panel is located for display device sends down the luminous intensity less than in the higher environment of luminance, makes the light filling effect relatively poor, visual effect when influencing the display device, perhaps when the luminescent panel is in the lower environment of luminance, also can not be appropriate reduction display brightness, thereby be unfavorable for reducing the consumption.
Disclosure of Invention
The invention provides a light-emitting panel and a display device, which are used for realizing low power consumption while ensuring the light-emitting brightness of the light-emitting panel.
According to an aspect of the present invention, there is provided a light emitting panel including: the device comprises a power supply module, a detection module and a plurality of light emitting modules;
the detection module is used for acquiring temperature information and/or light brightness information of the environment where the light-emitting panel is located and feeding back a detection signal to the power supply module according to the temperature information and/or the light brightness information;
the power supply module is used for providing a power supply signal for the light-emitting module according to the detection signal.
According to another aspect of the present invention, there is provided a display device including the above-described light emitting panel.
According to the light-emitting panel provided by the invention, the temperature information and/or the light brightness information of the environment where the light-emitting panel is located are obtained through the detection module, and the obtained detection signals are fed back to the power supply module, so that the power supply module can adjust the power supply signals provided to the light-emitting module according to the detection signals, the power supply signals provided to the light-emitting module can be increased when the brightness and/or the temperature of the environment where the light-emitting panel is located are higher, and the light-emitting brightness of the light-emitting module is ensured, or the power supply signals provided to the light-emitting module are reduced when the brightness and/or the temperature of the environment where the light-emitting panel is located are lower, so that the useless power consumption of the light-emitting panel can be reduced while the light-emitting brightness of the light-emitting module is ensured, and the standby time of the light-emitting panel can be prolonged. The technical scheme of the invention can ensure the display luminous brightness of the luminescent panel and simultaneously ensure the low power consumption of the luminescent panel as much as possible.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light-emitting panel provided by an embodiment of the invention;
fig. 2 is a schematic structural view of another luminescent panel provided by an embodiment of the invention;
fig. 3 to 15 are schematic structural diagrams of another luminescent panel provided in an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In a display device, a driving chip is usually required to be arranged to drive a light emitting module in a light emitting panel to emit light, the driving chip generates heat during operation, and the working performance of a semiconductor device in the driving chip is affected, namely the light emitting brightness of a light emitting element in the light emitting module, when the ambient temperature of the light emitting element is higher, the internal resistance of the light emitting element is smaller, a smaller electric signal is provided for the light emitting element, and the light emitting element can have higher light emitting brightness; on the contrary, when the ambient temperature of the light emitting device is low, the internal resistance of the light emitting device is high, and a high electrical signal needs to be provided to the light emitting device to ensure that the light emitting device has a corresponding light emitting brightness. In addition, the conventional light-emitting panel cannot detect the ambient brightness, and when the light-emitting panel is in an environment with high brightness, light cannot be effectively supplemented to influence the visual effect when the display device is used, or when the light-emitting panel is in an environment with low brightness, the display brightness cannot be properly reduced, so that the reduction of power consumption is not facilitated.
In order to solve the above problems, an embodiment of the present invention provides a light-emitting panel, including a power module, a detection module, and a plurality of light-emitting modules; the detection module is used for acquiring temperature information and/or light brightness information of the environment where the light-emitting panel is located and feeding back a detection signal to the power supply module according to the temperature information and/or the light brightness information; the power supply module is used for providing a power supply signal for the light-emitting module according to the detection signal.
By adopting the technical scheme, the temperature information and/or the light brightness information of the environment where the light-emitting panel is positioned are obtained through the detection module, the obtained detection signals are fed back to the power supply module, thereby enabling the power supply module to adjust the power supply signal provided to the light emitting module according to the detection signal, so as to increase the power signal provided to the light-emitting module when the brightness and/or temperature of the environment where the light-emitting panel is located is higher and/or lower, thereby ensuring the light-emitting brightness of the light-emitting module, or, when the brightness and/or the temperature of the environment where the light-emitting panel is located are low and/or high, the power supply signal provided to the light-emitting module is reduced, namely, the luminous brightness of the luminous module can be ensured, the useless power consumption of the luminous panel can be reduced, the standby time of the luminous panel can be prolonged, thus, the display light emission luminance of the light-emitting panel is ensured, and the low power consumption of the light-emitting panel is ensured as much as possible.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments of the present invention without any creative work, belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a light-emitting panel according to an embodiment of the present invention, as shown in fig. 1, the light-emitting panel 00 includes a power module 10, a detection module 20, and a plurality of light-emitting modules 30; the detection module 20 is configured to obtain temperature information of an environment where the light-emitting panel 00 is located and/or luminance information of light, and feed back a detection signal to the power module 10 according to the temperature information and/or the luminance information of light; the power module 10 is used for providing a power signal to the light emitting module 30 according to the detection signal.
The detection module 20 may be electrically connected to the signal feedback terminal IN of the power module 10, and the power output terminal of the power module 10 is electrically connected to the light emitting module 30. At this time, the detection module 20 may detect temperature information of an environment where the light emitting panel 00 is located and/or luminance information of light, generate a detection signal according to the temperature information of the environment where the light emitting panel 00 is located and/or the luminance information of light, and feed back the detection signal to the signal feedback terminal of the power module 10, so that the power module 10 may provide a power signal to the light emitting module 30 according to the detection signal fed back by the detection module, and control the light emitting luminance of the light emitting module 30.
It is understood that the connection relationship between the power module 10 and the detection module 20 and the light emitting module 30 may be set according to actual needs, and this is not particularly limited in the embodiment of the present invention. In an exemplary embodiment, referring to fig. 1, the light emitting modules 30 located in the same row or the same column may be electrically connected to the power output terminal of the power module 10 through the same signal line, so that the power signal provided by the power module 10 can be transmitted to each light emitting module 30 through the signal line.
It should be noted that the detection module 20 may only detect the ambient temperature of the light emitting panel 00, and then only feeds back a detection signal to the power module 10 according to the ambient temperature of the light emitting panel 00; alternatively, the detection module 20 may only detect the brightness of the ambient light of the light-emitting panel 00, and at this time, only feeds back the detection signal to the power module 10 according to the brightness of the ambient light of the light-emitting panel 00; or the detection module 20 may separately detect the ambient temperature of the light emitting panel 00 and the brightness of the light, and then may feed back the detection signal to the power module 10 in combination with the ambient temperature of the light emitting panel 00 and the brightness of the light. The following description is made for the case where the detection module 20 detects the ambient temperature of the light-emitting panel 00 and/or the brightness of the ambient light, and feeds back the detection signal to the power module 20.
For example, the detection module 20 feeds back a detection signal to the power module 10 according to the temperature of the environment where the light-emitting panel 00 is located, where the detection signal may be a signal positively correlated with the temperature of the environment where the light-emitting panel 00 is located, that is, the higher the temperature of the environment where the light-emitting panel 00 is located, the higher the voltage value of the detection signal fed back to the power module 10 by the detection module 20 is, or the detection signal may be a signal inversely correlated with the temperature of the environment where the light-emitting panel 00 is located, that is, the higher the temperature of the environment where the light-emitting panel 00 is located, the smaller the voltage value of the detection signal fed back to the power module 10 by the detection module 20 is; the power module 10 can obtain the current temperature of the environment where the light-emitting panel 00 is located according to the detection signal fed back by the detection module 20, and provide a corresponding power signal to the light-emitting module 30, for example, when the power module 10 determines that the temperature of the environment where the light-emitting panel 00 is located is higher according to the detection signal, the power signal provided to the light-emitting module 30 can be reduced to reduce power consumption, and when the power module 10 determines that the temperature of the environment where the light-emitting panel 00 is located is lower according to the detection signal, the power signal provided to the light-emitting module 30 can be increased or kept unchanged to ensure the light-emitting brightness of the light-emitting module 30.
In another exemplary embodiment, the detection module 20 may feed back a detection signal to the power module 10 according to the brightness of the light in the environment where the light-emitting panel 00 is located, where the detection signal may be a signal that has a positive correlation with the brightness of the light in the environment where the light-emitting panel 00 is located, that is, the higher the brightness of the light in the environment where the light-emitting panel 00 is located, the higher the voltage value of the detection signal fed back to the power module 10 by the detection module 20 is, or the detection signal may be a signal that has an inverse correlation with the brightness of the light in the environment where the light-emitting panel 00 is located, that is, the higher the brightness of the light in the environment where the light-emitting panel 00 is located, the smaller the voltage value of the detection signal fed back to the power module 10 by the detection module 20 is; for example, if the power module 10 determines that the brightness of the ambient light of the light-emitting panel 00 is higher according to the detection signal, the power signal provided to the light-emitting module 30 may be increased to supplement the light-emitting panel 00 when the ambient light brightness is higher, so that the content displayed by the light-emitting panel 00 is convenient for the human eyes to view, and when the power module 10 determines that the brightness of the ambient light of the light-emitting panel 00 is lower according to the detection signal, the light-emitting panel 00 has a smaller display luminance, and the content displayed by the light-emitting panel 00 can be viewed by the human eyes, at this time, the power signal provided to the light-emitting module 30 may be reduced to reduce power consumption.
In another exemplary embodiment, the detection module 20 feeds back a detection signal to the power module 10 according to the temperature of the environment where the light-emitting panel 00 is located and the brightness of the light, where the voltage of the detection signal may be determined by combining the temperature of the environment where the light-emitting panel 00 is located and the brightness of the light, or may be determined by preferentially considering one of the temperature of the environment where the light-emitting panel 00 is located and the brightness of the light, where the power module 10 determines the power signal provided to the light-emitting module 30 according to the detection signal fed back by the detection module 20, and the power signal is capable of ensuring the light-emitting brightness of the light-emitting module 30 and meeting the requirement of low power consumption, and this is not particularly limited in this embodiment of the present invention.
The light-emitting panel provided by the embodiment of the invention obtains the temperature information and/or the light brightness information of the environment where the light-emitting panel is located through the detection module, and feeds back the obtained detection signal to the power supply module, thereby enabling the power supply module to adjust the power supply signal provided to the light emitting module according to the detection signal, increase the power supply signal provided to the light emitting module, so as to ensure the brightness of the light-emitting module when the environment where the light-emitting panel is located is high in brightness and/or low in temperature, or to reduce the power supply signal to the light-emitting module when the light-emitting panel is in a lower brightness and/or a higher temperature environment, namely, the luminous brightness of the luminous module can be ensured, the useless power consumption of the luminous panel can be reduced, the standby time of the luminous panel can be prolonged, therefore, the display luminance of the light-emitting panel is ensured, and the low power consumption of the light-emitting panel can be ensured as much as possible.
Alternatively, fig. 2 is a schematic structural diagram of another light-emitting panel provided in an embodiment of the invention, and as shown in fig. 2, the detection module 20 includes a detection sensor 21 and a first voltage dividing unit 01; the detection sensor 21 is configured to acquire temperature information and/or luminance information of light of an environment where the light-emitting panel 00 is located, and convert the temperature information and/or the luminance information into a detection electric signal; the first voltage divider 01 and the detecting sensor 21 are connected in series between the first level terminal V1 and the second level terminal V2, and the first voltage divider 01 and the detecting sensor 21 are electrically connected to the first node a; the first voltage division unit 01 is configured to divide the first level signal of the first level terminal V1 according to the detection electrical signal; the signal feedback terminal IN of the power module 10 is coupled to the first node a; the power module 10 is configured to provide a power signal to the light emitting module 30 according to the potential of the first node a.
Specifically, the detection sensor 21 may convert the ambient temperature and/or the brightness of the light in which the light emitting panel 00 is located into an electrical signal, and the first voltage division unit 01 may divide the voltage in combination with the electrical signal converted by the detection sensor 21. When the first level terminal V1 receives a positive power signal and the second level terminal V2 receives a negative power signal, the first voltage dividing unit 01 and the detecting sensor 21 are connected in series between the first level terminal V1 and the second level terminal V2, so that the first level terminal V1 and the second level terminal V2 can form a path through the first voltage dividing unit 01 and the detecting sensor 21 connected in series; the first level terminal V1 and the second level terminal V2 may supply power to the detection sensor 21 so that the detection sensor 21 can detect the ambient temperature and/or the brightness of light in which the luminescent panel 00 is located; the first voltage dividing unit 01 and the detection sensor 21 are electrically connected to the first node a, so that the first voltage dividing unit 01 divides the positive power signal of the first level terminal V1 according to the electrical signal generated by the detection sensor 21, thereby controlling the potential of the first node a, the power module 10 collects the potential of the first node a through the signal feedback terminal IN thereof as a detection signal, and at this time, the ambient temperature and/or the brightness of the light emitting panel 00 can be determined according to the potential of the first node a, thereby adjusting the power signal provided to the light emitting module 30 according to the potential of the first node a. The first voltage dividing unit 01 may include, but is not limited to, a voltage dividing resistor R1, and the resistance of the first voltage dividing resistor R1 may be set according to actual needs, which is not limited in this embodiment of the invention.
For example, when the detection sensor 21 is capable of acquiring the temperature of the environment in which the luminescent panel 00 is located, the detection sensor 21 may include a temperature-sensitive sensor for detecting the temperature; when the detection sensor 21 is capable of acquiring the brightness of the ambient light in which the luminescent panel 00 is located, the detection sensor 21 may include a photosensitive sensor for detecting the brightness; alternatively, the detection sensor 21 may include both a temperature-sensitive sensor and a photosensitive sensor, so as to be able to detect both the ambient temperature of the light-emitting panel 00 and the brightness of light.
It is to be understood that when the first level terminal V1 receives a positive power supply signal, the second level terminal V2 receives a negative power supply signal; on the contrary, when the first level terminal V1 receives the negative power signal, the second level terminal V2 receives the positive power signal, which can be set according to the requirement, and the embodiment of the present invention is not limited in this respect.
In an alternative embodiment, referring to fig. 8, if the power signal output terminal VO of the power module 10 is electrically connected to the light emitting module, the power signal output terminal VO may be set to be multiplexed as the first level terminal V1 or the second level terminal V2; thus, the number of signal terminals can be reduced, the structure of the light-emitting panel 00 can be simplified, the number of signals supplied to the light-emitting panel 00 can be reduced, and reduction in cost of the light-emitting panel 00 is facilitated.
Alternatively, fig. 3 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 3, the detection sensor 21 includes at least one temperature-sensitive sensor 211 and a first voltage dividing unit 01 connected in series between a first level terminal V1 and a second level terminal V2; the temperature-sensitive sensor 211 may be a thermistor RT, and the thermistor RT may be a positive temperature coefficient thermistor or a negative temperature coefficient thermistor, which is not specifically limited in this embodiment of the present invention. Illustratively, when the thermistor RT is a thermistor with a positive temperature coefficient, the resistance of the thermistor RT is positively correlated with the temperature, that is, the resistance of the thermistor RT increases with the increase of the temperature, so when the thermistor RT detects that the ambient temperature of the light emitting panel 00 is higher, the resistance is higher, the voltage at the two ends is also higher, the potential of the first node a is higher, whereas when the ambient temperature of the light emitting panel 00 is lower, the resistance is lower, the voltage at the two ends is also lower, the potential of the first node a is lower; or, when the thermistor RT is a thermistor with a negative temperature coefficient, the resistance of the thermistor RT is inversely related to the temperature, that is, the resistance of the thermistor RT decreases with the increase of the temperature, so that when the thermistor RT detects that the ambient temperature of the light-emitting panel 00 is higher, the resistance is smaller, the voltages at the two ends are also smaller, and the potential of the first node a is smaller; on the contrary, when the temperature of the environment where the light-emitting panel 00 is detected by the thermistor RT is low, the resistance value is large, the voltages at the two ends are also small, and the potential of the first node a is high; the power module 10 may determine the temperature of the environment where the light emitting panel 00 is located at this time according to the potential of the first node a, so as to adjust the power signal supplied to the light emitting module 30 according to the temperature.
It is understood that fig. 3 only shows that the detection sensor 21 includes one temperature-sensitive sensor 211, and it is understood that the detection sensor 21 may include a plurality of temperature-sensitive sensors 211, which is not particularly limited in the embodiment of the present invention. When the detection sensor 21 includes a plurality of temperature sensitive sensors 211, the plurality of temperature sensitive sensors 211 may be connected in parallel between the first node a and the second level terminal V2 as shown in fig. 4, or the plurality of temperature sensitive sensors 211 may be connected in series between the first node a and the second level terminal V2 as shown in fig. 5.
Alternatively, fig. 6 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 6, the detecting sensor 21 includes a photosensitive sensor 212, and the photosensitive sensor 212 and the first voltage dividing unit 01 are connected in series between the first level terminal V1 and the second level terminal V2. The photo sensor 212 may be a photo diode D0, in which case, the anode of the photo diode D0 and the first voltage divider 01 are electrically connected to the first node a, the cathode of the photo diode D0 is electrically connected to the second voltage terminal V2, when the brightness of the ambient light where the light emitting panel 00 is located is dark, the reverse current of the photodiode D0 is small, i.e., the current in the path between the first level terminal V1 and the second level terminal V2, is small, and when the brightness of the light of the environment in which the light-emitting panel 00 is located is bright, the reverse current of the photodiode D0 is large, i.e., the current in the path between the first level terminal V1 and the second level terminal V2 is large, the power module 10 can determine the current in the path between the first level terminal V1 and the second level terminal V2 by collecting the potential of the first node a, so that the brightness of the light of the environment where the light emitting panel 00 is located can be known, so as to adjust the power signal provided to the light emitting module 30 according to the brightness of the light of the environment where the light emitting panel 00 is located; alternatively, the brightness of the light in the environment where the light-emitting panel 00 is located may also be determined according to the potential of the first node a, that is, when the brightness of the environment where the light-emitting panel 00 is located is low, the reverse current of the photodiode D0 is small, and the photodiode D0 is equivalent to open circuit, and the potential of the first node a is close to the first level signal provided by the first level terminal V1, whereas when the brightness of the environment where the light-emitting panel 00 is located is high, the reverse current of the photodiode D0 is large, and the potential of the first node a is close to the second level signal provided by the second level terminal V2, so that the power module 10 may determine the brightness of the light in the environment where the light-emitting panel 00 is located according to the potential of the first node a.
Alternatively, fig. 7 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, as shown IN fig. 7, the detecting sensor 21 includes a temperature-sensitive sensor 211 and a photosensitive sensor 212, IN which case the first voltage dividing unit 01 may include two voltage dividing resistors, that is, a first voltage dividing resistor R01 and a second voltage dividing resistor R02, the temperature-sensitive sensor 211 may be connected IN series with the first voltage dividing resistor R01 between the first level terminal V1 and the second level terminal V2, the photosensitive sensor 212 may be connected IN series with the second voltage dividing resistor R02 between the first level terminal V1 and the second level terminal V2, the first node a may include a first sub-node a1 and a second sub-node a2, and the signal feedback terminal IN of the power module 10 includes a first signal feedback terminal IN1 and a second signal feedback terminal IN 2; the temperature-sensitive sensor 211 and the first sub-voltage-dividing resistor R01 are electrically connected to the first sub-node a1, the photosensor 212 and the second voltage-dividing resistor R02 are electrically connected to the second sub-node a2, the second sub-node a2 is coupled to the first signal feedback terminal IN1 of the power module 10, and the second sub-node a2 is coupled to the second signal feedback terminal IN2 of the power module 10; thus, the power module 10 can acquire the potentials of the first sub-node a1 and the second sub-node a2 respectively to obtain the temperature of the environment where the light-emitting panel 00 is located and the brightness of light, and further adjust the power signal provided to the light-emitting module 30, so that on the premise that the display light-emitting requirement of the light-emitting module can be met, low power consumption is achieved.
Alternatively, with continued reference to fig. 8, when the detection sensor 21 includes the temperature-sensitive sensor 211, the light-emitting panel 00 includes at least one display area 40; the display area 40 is provided with a driving chip 50, at least one light emitting module 30, and a temperature sensitive sensor 211; the driving chip 50 is configured to provide a data signal to the light emitting module 30, so that the light emitting module 30 emits light according to the data signal and the power signal; wherein, the temperature sensitive sensor 211 is located at one side of the driving chip 50.
Specifically, the display area 40 of the light-emitting panel 00 needs to be provided with a driving chip 50 for driving the light-emitting module 30 to emit light, in addition to the light-emitting module 30 for displaying a picture, the driving chip 50 can provide a data signal for the light-emitting module 30, so that the light-emitting module 30 can present a corresponding level of light-emitting brightness according to the data signal and a power signal, and when the light-emitting panel 00 includes a plurality of display areas 40, the driving chip 50 arranged in one-to-one correspondence with the plurality of display areas 40 can be included to realize the partition control of the light-emitting panel 00, and the display light-emitting uniformity of the light-emitting panel 00 can be improved; driver chip 50 can be accompanied by a large amount of heat production in the operation process, be the heat concentration district of luminescent panel 00, because driver chip 50 is direct to luminescent module 30 output data signal, consequently driver chip 50 is nearer with luminescent module 30 distance, thereby the influence of the heat of its production to luminescent module 30 luminance is great, consequently set up temperature sensitive sensor 211 in the one side that is close to driver chip 50, the heat that can more accurate detection driver chip 50 distribute out, so as to make power module 10 can be more accurate provide the power signal to luminescent module 30 according to the temperature information adjustment that temperature sensitive sensor 211 acquireed.
For example, when the light emitting panel 00 includes a plurality of display areas 40, since the driving chips 50 corresponding to the plurality of display areas 40 one to one are further disposed, the driving chips 50 can drive the light emitting modules in one of the display areas 40 disposed correspondingly, and at this time, the driving pins of the driving chips 50 can be reduced, so that the package size of the driving chips 50 can be greatly reduced, and the occupied space can be saved.
It should be noted that the light emitting panel 00 is only exemplarily shown in the drawings to include 4 display regions 40, and the driving chip 50 is exemplarily shown to include 4 output terminals and drive 3 light emitting modules 30 per output terminal, and it is understood that, in order to improve the display uniformity of the light emitting panel 00, the light emitting panel 00 may include a plurality of display regions 40, and the number of output terminals of the driving chip 50 and the number of light emitting modules 30 per output terminal may be set according to requirements, which is not particularly limited in the embodiment of the present invention. Further, for convenience of understanding, the following embodiments are explained in a case where the light emitting panel 00 includes 1 display area 40, without being particularly explained.
Optionally, fig. 9 is a schematic structural diagram of another luminescent panel provided in an embodiment of the present invention, and as shown in fig. 9, the detection module 20 further includes a signal processing circuit 22; the signal processing circuit 22 is coupled to the first node a and the signal feedback terminal IN of the power module 10; the signal processing circuit 22 is configured to feed back a detection signal to the power module 10 according to the potential of the first node a.
Specifically, the signal processing circuit 22 coupled between the first node a and the signal feedback terminal IN of the power module 10 can feed back the detection signal to the power module 10 according to the potential of the first node a, so that the detection signal fed back after being processed by the signal processing circuit 22 can be within a recognizable range of the power module 10, and further, the potential of the first node a can be detected more accurately, that is, the temperature and/or the brightness of the light of the environment where the light-emitting panel 00 is located can be detected more accurately.
Alternatively, fig. 10 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 10, the signal processing circuit 22 includes a plurality of signal conditioning networks 221; the signal conditioning networks 221 are coupled between the first node a and the signal feedback terminal IN of the power module 10; the signal adjusting networks 221 are configured to perform different degrees of gain adjustment on the potential of the first node a, respectively, generate a plurality of electrical signals, converge the electrical signals, convert the electrical signals into detection signals, and feed the detection signals back to the power module 10.
Specifically, each signal conditioning network 221 can output an electrical signal according to the potential of the first node a, and the electrical signals output by each signal conditioning network 221 can be converged and then provided to the signal feedback terminal IN of the power module 10, so that the power module 10 can determine the potential of the first node a at this time according to the value of the detection signal.
Alternatively, referring to fig. 10, a plurality of signal conditioning networks 221 may be disposed IN parallel to the first node a and the signal feedback terminal IN of the power module 10. Thus, the input end of each signal conditioning network 221 is electrically connected to the first node a, and the output end of each signal conditioning network 221 is electrically connected to the signal feedback end IN of the power module 10, so that each signal conditioning network 221 can output the detection signal to the signal feedback end IN of the power module 10 according to the potential of the first node a.
Alternatively, fig. 11 is a schematic structural diagram of another light-emitting panel provided by the embodiment of the invention, and as shown in fig. 11, each signal conditioning network 221 at least includes a first diode D1 and a third voltage division unit 03; in the same signal conditioning network 221, a first diode D1 and a third voltage dividing unit 03 are connected in series.
Specifically, when each signal conditioning network 221 at least includes a first diode D1 and a third voltage dividing unit R3 connected IN series, and each signal conditioning network 221 is connected IN parallel between the first node a and the signal feedback end IN of the power module 10, the anode of the first diode D1 may be electrically connected to the first node a, and the cathode of the first diode D1 is connected to the third voltage dividing unit R3, at this time, the signal conditioning network 221 close to the first node a can be preferentially turned on, so that when the potential of the first node a is small, only one or several signal conditioning networks 221 close to the first node a may be turned on, and the electric signals output by the turned-on signal conditioning networks 221 are superposed and output to the signal feedback end IN of the power module 10, so that the power module 10 can determine the size of the detection signal at this time; alternatively, when the potential of the first node a is large enough to turn on all the signal conditioning networks 221, the detection signal output by the signal processing circuit 22 increases with the increase in the potential of the first node a, and detection of the potential of the first node a can also be achieved. Wherein, the signal processing circuit 22 includes 4 signal conditioning networks 221 for exemplary illustration, it is understood that the signal processing circuit 22 may include a plurality of signal conditioning networks 221 to enable more precise detection of the potential of the first node a. In addition, the third voltage dividing unit R3 may include, but is not limited to, a voltage dividing resistor, and when the third voltage dividing unit R3 includes a voltage dividing resistor, it is prevented that it may be designed according to voltage dividing requirements.
Alternatively, fig. 12 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 12, the first diode D1 is a zener diode.
Specifically, when the first diode D1 is a zener diode, the cathode of the first diode D1 is electrically connected to the first node a, and the anode of the first diode D1 is electrically connected to the signal feedback terminal IN of the power module 10. When the first diode D1 breaks down in the reverse direction, the voltage across the two terminals can be stabilized and kept constant, and the potential of the first node a at this time can be determined according to the current at the output terminal of each signal conditioning network 221.
Alternatively, fig. 13 is a schematic structural diagram of another light-emitting panel provided by the embodiment of the invention, and as shown in fig. 13, a plurality of signal conditioning networks 221 are arranged in cascade; wherein, the reference signal input end of each stage of signal conditioning network 221 between the first stage signal conditioning network 221 and the last stage signal conditioning network 221 is electrically connected with the reference signal output end of the previous stage signal conditioning network 221; the signal processing circuit 22 further includes a second voltage dividing unit 02; a reference signal input end of the first-stage signal conditioning network 221 is electrically connected with a reference power supply Vref, and a reference signal output end of the last-stage signal conditioning network 221 is electrically connected with a second level end V2 through a second voltage division unit 02; the detection signal input end of each stage of the signal conditioning network 221 is coupled to the first node a, and the detection signal output end of each stage of the signal conditioning network 221 is coupled to the signal feedback end IN of the power module 10.
Specifically, each level of signal conditioning network 221 is cascaded, so that the next level of signal conditioning network can further condition the signal conditioned by the previous level of signal conditioning network, and at this time, the reference signal provided by the reference power Vref can be used as a level of reference signal, that is, the first level of signal conditioning network can compare the potential at the first node a with the level of reference signal, and determine the output signal thereof according to the comparison result; meanwhile, the primary reference signal is converted into a secondary reference signal after being regulated by the primary signal regulating network, and the secondary signal regulating network can compare the potential at the first node a with the secondary reference signal and determine an output signal of the secondary reference signal according to a comparison result; the second-level reference signal is converted into a third-level reference signal after being regulated by the second-level signal regulating network, and the third-level signal regulating network can compare the potential at the first node a with the third-level reference signal and determine an output signal of the third-level reference signal according to a comparison result; by analogy, when the N-level signal adjusting network is included, the N-1 level reference signal is adjusted by the N-1 level signal adjusting network and then converted into the N-level reference signal, and the N-level signal adjusting network determines an output signal of the first-section a by comparing the potential of the first-section a with the N-level reference signal; in this way, the output signal of the regulated 221 is fed back to the power module 10 according to the signals of each stage, so that the power module provides a corresponding power signal according to the detection signal.
In addition, the second voltage division unit 02 arranged between the reference signal output end of the last-stage signal conditioning network and the second level end V2 can realize voltage division and ground protection. The second voltage dividing unit 02 includes, but is not limited to, a voltage dividing resistor R2, and the blocking of the voltage dividing resistor R2 may be designed according to the voltage dividing requirement, which is not specifically limited in the embodiment of the present invention.
Alternatively, fig. 14 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 14, each stage of the signal conditioning network 221 includes a fourth voltage dividing unit 04, a fifth voltage dividing unit 05, and an operational amplifier U1; in each stage of signal conditioning network from the first stage signal conditioning network 221 to the last stage signal conditioning network 221, a first end of the fourth voltage dividing unit 04 is electrically connected with a second end of the fourth voltage dividing unit 04 of the previous stage signal conditioning network 221, and a second end of the fourth voltage dividing unit 04 is electrically connected with an inverting input end of the operational amplifier U1 and a first end of the fourth voltage dividing unit R4 of the next stage signal conditioning network 221; a first end of the fourth voltage dividing unit 04 of the first stage signal conditioning network 221 is electrically connected with the reference power source Vref, and a second end of the fourth voltage dividing unit 04 of the last stage signal conditioning network 221 is electrically connected with the second level end V2 through the second voltage dividing unit R2; the non-inverting input terminal of the operational amplifier U1 of each stage of the signal conditioning network 221 is coupled to the first node a; the output terminal of the operational amplifier U1 of each stage of the signal conditioning network 221 is coupled to the signal feedback terminal IN of the power module 10 through the fifth voltage dividing unit 05.
Specifically, the first terminal of the fourth voltage dividing unit R4 in each stage of the signal conditioning network 221 is electrically connected to the second terminal of the fourth voltage dividing unit 04 in the previous stage of the signal conditioning network 221, and a second terminal of the fourth voltage divider block 04 in the signal conditioning network 221 is electrically connected to the inverting input terminal of the operational amplifier U1, the first terminal of the fourth voltage dividing element 04 in each stage of the signal conditioning network 221 corresponds to the reference signal input terminal, the connection node between the second terminal of the fourth voltage dividing element 04 in each stage of the signal conditioning network 221 and the inverting input terminal of the operational amplifier U1 corresponds to the reference signal output terminal, and thus, the reference signal input end of each stage of signal conditioning network 221 between the first stage signal conditioning network 221 and the last stage signal conditioning network 221 is electrically connected with the reference signal output end of the previous stage signal conditioning network 221, so that the cascade connection of each stage signal conditioning network 221 is realized; wherein each of the fourth voltage dividing units 04 further divides the reference signal level provided by the reference power Vref such that the voltage of the reference signal provided to the first-stage signal conditioning network 221 to the last-stage signal conditioning network 221 decreases step by step, and since the potential of the first node a provided to the first-stage signal conditioning network 221 to the last-stage signal conditioning network 221 also decreases step by step, when the reference voltage is provided to the inverting input terminal of the operational amplifier U1 and the potential of the first node a is provided to the non-inverting input terminal of the operational amplifier U1, the operational amplifier U1 can output the detection signal according to the potential signal of the first node a received at the non-inverting input terminal and the reference voltage received at the inverting input terminal, and at this time, the operational amplifier U1 can be used as a voltage comparator, when the potential signal of the first node a received at the non-inverting input terminal is greater than the reference voltage received at the inverting input terminal, and outputs a high level signal, and outputs a low level signal when the potential signal of the first node a received by the non-inverting input terminal is less than the reference voltage output detection signal received by the inverting input terminal, and the power chip 10 can determine that several signal conditioning networks output the high level signal according to the received level signal, thereby determining the potential of the first node a. The fifth voltage division unit 05 is used for dividing voltage to prevent the voltage output to the power supply chip 10 from being too large, and thus the protection effect is achieved. The fourth voltage dividing unit 04 may include a fourth voltage dividing resistor R4, the fifth voltage dividing unit 05 may include a fifth voltage dividing resistor R5, and the resistances of the fourth voltage dividing resistor R4 and the fifth voltage dividing resistor R5 may be set according to design requirements, which is not specifically limited in this embodiment of the present invention.
Alternatively, referring to fig. 14, the signal processing circuit 22 further includes a sixth voltage dividing unit R6 and a seventh voltage dividing unit R7; one end of the sixth voltage dividing unit R6 is electrically connected to the first node a; the other end of the sixth voltage dividing unit R6 is electrically connected to each signal conditioning network 221 at the second node b; the seventh voltage dividing unit R7 is electrically connected between the second node b and the third level terminal V3.
In this manner, by electrically connecting the sixth voltage dividing unit R6 between the first node a and the non-inverting input terminal of the operational amplifier U1 in the first-stage signal conditioning network 221, and electrically connecting the seventh voltage dividing unit R7 between the third level terminal V3 and the non-inverting input terminal of the operational amplifier U1 in the last-stage signal conditioning network 221, the voltage division of the potential of the first node a by the sixth voltage dividing unit R6 and the seventh voltage dividing unit R7 can be made. The sixth voltage dividing unit R6 includes, but is not limited to, a sixth voltage dividing resistor, the seventh voltage dividing unit R7 includes, but is not limited to, a seventh voltage dividing resistor, and the resistances of the sixth voltage dividing resistor and the seventh voltage dividing resistor may be set according to design requirements, which is not specifically limited in the embodiment of the present invention.
It is to be understood that the third level terminal V3 may receive a negative power signal or a positive power, and when it receives a power signal that is the same as the second level terminal V2, the third level terminal V3 may be multiplexed as the second level terminal V2, so that the number of signal terminals can be reduced, the structure of the light emitting panel 00 can be simplified, the number of signals supplied to the light emitting panel 00 can be reduced, and it is advantageous to reduce the cost of the light emitting panel 00.
Alternatively, referring to fig. 14 or 15, the light emitting panel 00 further includes an eighth voltage dividing unit 08; the signal processing circuit 22 is electrically connected with the signal feedback terminal IN of the power module 10 through the eighth voltage dividing unit 08; the eighth voltage dividing unit 08 is configured to divide the detection signal output by the signal processing circuit 22 to provide the divided detection signal to the signal feedback terminal IN of the power chip 10, so that the detection signal provided to the power chip 10 can be within the identification range of the power chip 10.
Alternatively, with continued reference to fig. 14, the eighth voltage dividing unit 08 includes a voltage dividing resistance R8; one end of the voltage-dividing resistor R8 is electrically connected to the signal processing circuit 22 at the third node c, and the other end of the voltage-dividing resistor R8 is electrically connected to the fourth level terminal V4; the detection feedback terminal IN of the power module 10 is electrically connected to the third node c. IN this way, the detection signal output by the signal processing circuit 22 can be divided by the voltage dividing resistor R8 to lower the potential of the third node c, and when the detection feedback terminal IN of the power module 10 is electrically connected to the third node c, the signal received by the power chip 10 can be ensured to be within the effective identification range.
It should be noted that fig. 14 only exemplifies that the eighth voltage dividing unit 08 includes the voltage dividing resistor R8, and the eighth voltage dividing unit 08 may be in another form to achieve a better voltage dividing effect.
Alternatively, fig. 15 is a schematic structural diagram of another light-emitting panel according to an embodiment of the present invention, and as shown in fig. 15, the eighth voltage dividing unit 08 includes a first transistor T1 and a voltage dividing resistor R8; a gate of the first transistor T1 is electrically connected to the signal processing circuit 22, a first pole of the first transistor T1 and a second end of the voltage dividing resistor R8 are electrically connected to the fourth node d, and a second pole of the first transistor T1 is electrically connected to the fourth level end V4; a first end of the voltage-dividing resistor R8 is electrically connected with a fifth-level end V5; the detection feedback terminal IN of the power module 10 is electrically connected to the fourth node d. In order to simplify the circuit structure, the second-level terminal V2 may be multiplexed into the fourth-level terminal V4.
Specifically, taking the first transistor as a PMOS transistor as an example, the detection signal output by the signal processing circuit 22 can be provided to the gate of the first transistor T1, so that the resistance of the first transistor T1 is inversely related to the detection signal, that is, the larger the voltage of the detection signal is, the larger the conduction degree of the first transistor T1 is, the smaller the resistance thereof is, and conversely, the smaller the voltage of the detection signal is, the smaller the conduction degree of the first transistor T1 is, the larger the resistance thereof is; therefore, the first pole of the first transistor T1 is electrically connected to the fifth level terminal V5 through the voltage dividing resistor R8, the second pole of the first transistor T1 is electrically connected to the fourth level terminal V4, and the power signals provided by the fifth level terminal V5 and the fourth level terminal V4 can be divided by the voltage dividing resistor R8 and the first transistor T1, and the detection feedback terminal IN of the power module 10 can be electrically connected to the fourth node d at this time, so as to adjust the power signal output to the light emitting module 30 through the potential of the fourth node d. For example, when the resistance value of the first transistor T1 is larger, the divided voltage is larger, the potential of the fourth node d is higher, and it is determined that the voltage of the detection signal output by the signal processing circuit 22 is smaller at this time, that is, the potential of the first node a is smaller; conversely, when the resistance of the first transistor T1 is smaller, the divided voltage is smaller, the potential of the fourth node d is lower, and it is determined that the voltage of the detection signal output by the signal processing circuit 22 is higher, that is, the potential of the first node a is higher; in this way, the temperature of the environment where the light emitting panel 00 is located and/or the brightness of the light can be determined according to the potential of the fourth node d, so that the power signal output to the light emitting module 30 can be further adjusted according to the temperature of the environment where the light emitting panel 00 is located and/or the brightness of the light.
Wherein the fifth level terminal V5 may receive a positive power signal, and the fourth level terminal V4 receives a negative power signal; alternatively, the fifth level terminal V5 may receive a negative power signal, and the fourth level terminal V receives a positive power signal; the embodiment of the present invention is not particularly limited to this. Optionally, when the signal received by the fifth level terminal V5 is the same as the power signal output by the power signal output terminal VO of the power module 10, the power signal output terminal VO may be multiplexed as the fifth level terminal V5; thus, the number of signal terminals can be reduced, the structure of the light-emitting panel 00 can be simplified, the number of signals supplied to the light-emitting panel 00 can be reduced, and reduction in cost of the light-emitting panel 00 is facilitated.
It will be appreciated that in embodiments of the invention, the light emitting module may comprise one or more light emitting elements, which may be connected in parallel or in series. In this case, the Light Emitting element may include, but is not limited to, an organic Light-Emitting Diode (OLED), a micro-LED (micro-LED), a mini-LED (mini-LED), a Light-Emitting Diode (LED) bead, and the like. In some alternative embodiments, the light emitting element is preferably a mini-LED with a size of 50 μm to 200 μm, so that the light emitting panel 00 has a higher resolution.
It is also understood that the light emitting panel 00 may be a display panel directly displaying a corresponding image; it can also be used to provide backlight source for other display modules (such as liquid crystal display modules, etc.), and the light-emitting panel 00 is a component of the backlight module. The embodiment of the invention does not specifically limit the function and type of the light emitting panel 00.
Based on the same inventive concept, embodiments of the present invention further provide a display device, where the display device includes the light-emitting panel provided in any embodiment of the present invention, and therefore the display device provided in the embodiments of the present invention includes technical features of the light-emitting panel provided in any embodiment of the present invention, and can achieve beneficial effects of the light-emitting panel provided in any embodiment of the present invention, and the same points can refer to the description of the light-emitting panel provided in the embodiments of the present invention, and are not repeated herein.
The display device may be any electronic product having a display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (19)

1. A light-emitting panel characterized by comprising: the device comprises a power supply module, a detection module and a plurality of light emitting modules;
the detection module is used for acquiring temperature information and/or light brightness information of the environment where the light-emitting panel is located and feeding back a detection signal to the power supply module according to the temperature information and/or the light brightness information;
the power supply module is used for providing a power supply signal for the light-emitting module according to the detection signal.
2. The luminescent panel according to claim 1, wherein the detection module includes a detection sensor and a first voltage dividing unit;
the detection sensor is used for acquiring temperature information and/or light brightness information of the environment where the light-emitting panel is located and converting the temperature information and/or the light brightness information into a detection electric signal;
the first voltage division unit and the detection sensor are connected in series between a first level end and a second level end, and the first voltage division unit and the detection sensor are electrically connected to a first node; the first voltage division unit is used for dividing the first level signal at the first level end according to the detection electric signal;
a signal feedback end of the power supply module is coupled to the first node; the power supply module is used for providing a power supply signal for the light-emitting module according to the electric potential of the first node.
3. The luminescent panel according to claim 2, wherein the detection sensor comprises:
at least one temperature-sensitive sensor connected in series with the first voltage division unit between the first level end and the second level end;
and/or, a photosensitive sensor connected in series with the first voltage division unit between the first level terminal and the second level terminal.
4. The luminescent panel according to claim 3, wherein when the detection sensor comprises the temperature-sensitive sensor, the luminescent panel comprises at least one display area; the display area is provided with a driving chip, at least one light-emitting module and the temperature-sensitive sensor;
the driving chip is used for providing a data signal to the light-emitting module so that the light-emitting module emits light according to the data signal and the power signal;
wherein, the temperature sensitive sensor is positioned at one side of the driving chip.
5. The light-emitting panel according to claim 2, wherein a power signal output terminal of the power module is electrically connected to the light-emitting module;
wherein the power signal output terminal is multiplexed as the first level terminal or the second level terminal.
6. The luminescent panel according to claim 2, wherein the detection module further comprises a signal processing circuit;
the signal processing circuit is respectively coupled to the first node and a signal feedback end of the power supply module; the signal processing circuit is used for feeding back the detection signal to the power supply module according to the potential of the first node.
7. The light-emitting panel according to claim 6, wherein the signal processing circuit comprises a plurality of signal conditioning networks;
the plurality of signal conditioning networks are coupled between the first node and a signal feedback terminal of the power module; the signal adjusting networks are used for respectively carrying out gain adjustment on the electric potential of the first node to different degrees, then respectively generating a plurality of electric signals, converging the electric signals, converting the converged electric signals into the detection signals and feeding the detection signals back to the power supply module.
8. The light-emitting panel of claim 7, wherein a plurality of the signal conditioning networks are connected in parallel to the first node and a signal feedback terminal of the power module.
9. The light-emitting panel according to claim 8, characterized in that each of the signal conditioning networks comprises at least a first diode and a third voltage dividing unit;
in the same signal conditioning network, the first diode and the third voltage division unit are connected in series.
10. The luminescent panel according to claim 9, wherein the first diode is a zener diode.
11. The lighting panel of claim 7, wherein a plurality of said signal conditioning networks are arranged in cascade;
the reference signal input end of each level of signal conditioning network between the first level of signal conditioning network and the last level of signal conditioning network is electrically connected with the reference signal output end of the previous level of signal conditioning network;
the signal processing circuit further comprises a second voltage division unit; a reference signal input end of the first stage of signal conditioning network is electrically connected with a reference power supply, and a reference signal output end of the last stage of signal conditioning network is electrically connected with the second level end through the second voltage division unit;
the detection signal input end of each level of the signal conditioning network is coupled to the first node, and the detection signal output end of each level of the signal conditioning network is coupled to the signal feedback end of the power supply module.
12. The luminescent panel according to claim 11, wherein each stage of the signal conditioning network includes a fourth voltage dividing unit, a fifth voltage dividing unit, and an operational amplifier;
in each stage of signal conditioning network between the first stage of signal conditioning network and the last stage of signal conditioning network, the first end of the fourth voltage dividing unit is electrically connected with the second end of the fourth voltage dividing unit of the previous stage of signal conditioning network, and the second end of the fourth voltage dividing unit is electrically connected with the inverting input end of the operational amplifier and the first end of the fourth voltage dividing unit of the next stage of signal conditioning network;
the first end of the fourth voltage division unit of the first stage of the signal conditioning network is electrically connected with a reference power supply, and the second end of the fourth voltage division unit of the last stage of the signal conditioning network is electrically connected with the second level end through the second voltage division unit;
the non-inverting input end of the operational amplifier of each stage of the signal conditioning network is coupled to the first node; the output end of the operational amplifier of each stage of the signal conditioning network is coupled to the signal feedback end of the power supply module through the fifth voltage division unit.
13. The luminescent panel according to claim 7, wherein the signal processing circuit further comprises a sixth voltage dividing unit and a seventh voltage dividing unit;
one end of the sixth voltage division unit is electrically connected to the first node; the other end of the sixth voltage division unit is electrically connected with each signal regulation network to a second node;
the seventh voltage dividing unit is electrically connected between the second node and a third level terminal.
14. The luminescent panel according to claim 13, wherein the third level terminal is multiplexed as the second level terminal.
15. The luminescent panel according to claim 6, further comprising: an eighth voltage dividing unit;
the signal processing circuit is electrically connected with a signal feedback end of the power supply module through the eighth voltage division unit.
16. The luminescent panel according to claim 15, wherein the eighth voltage dividing unit comprises a voltage dividing resistance;
one end of the voltage dividing resistor is electrically connected with the signal processing circuit at a third node, and the other end of the voltage dividing resistor is electrically connected with a fourth level end;
and the detection feedback end of the power supply module is electrically connected to the third node.
17. The luminescent panel according to claim 15, wherein the eighth voltage dividing unit comprises a first transistor and a voltage dividing resistor;
the grid electrode of the first transistor is electrically connected with the signal processing circuit, the first electrode of the first transistor is electrically connected with the second end of the divider resistor at a fourth node, and the second electrode of the first transistor is electrically connected with a fourth level end; the first end of the divider resistor is electrically connected with the fifth level end;
and the detection feedback end of the power supply module is electrically connected to the fourth node.
18. The luminescent panel according to claim 17, wherein a power signal output terminal of the power supply module is electrically connected to the light emitting module;
and the power supply signal output end is multiplexed as the fifth level end.
19. A display device, comprising: the light-emitting panel of any one of claims 1 to 18.
CN202210350784.5A 2022-04-02 2022-04-02 Light-emitting panel and display device Pending CN114743510A (en)

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