CN116256913A - Temperature adjusting method of display device and display device - Google Patents
Temperature adjusting method of display device and display device Download PDFInfo
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- CN116256913A CN116256913A CN202310193098.6A CN202310193098A CN116256913A CN 116256913 A CN116256913 A CN 116256913A CN 202310193098 A CN202310193098 A CN 202310193098A CN 116256913 A CN116256913 A CN 116256913A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
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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
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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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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Abstract
The application provides a temperature adjusting method of a display device and the display device, wherein the temperature adjusting method of the display device comprises the steps of establishing a mapping relation between the working temperature of a target area of the display device and the working current of a luminous element in the display device; and determining a target working current of the luminous element according to the mapping relation, and adjusting the working temperature of a target area of the display device to be a preset temperature according to the target working current. According to the temperature adjusting method of the display device, the target working current of the light emitting part is determined according to the mapping relation between the working temperature of the target area and the working current of the light emitting part, and the working temperature of the target area is adjusted to be the preset temperature according to the target working current. The working temperature of the display device in a low-temperature environment is kept at a preset temperature, the display device is prevented from running at a low temperature, and the display device is prevented from abnormal display pictures.
Description
Technical Field
The application relates to the technical field of display, in particular to a temperature adjusting method of a display device and the display device.
Background
With the development of photoelectric display technology and semiconductor manufacturing technology, LCD liquid crystal display devices (Thin Film Transistor-Liquid Crystal Display, TFT-LCD) with thin film transistors have been matured, and have been used more and more widely due to their light weight and convenience in carrying.
In the related art display device, an α -Si material is included in a channel layer of a thin film transistor, and the α -Si material has poor conductive effect at a low temperature. Therefore, the display device is likely to have problems such as abnormal display screen when operating in a low-temperature environment.
Disclosure of Invention
The invention aims to provide a temperature adjusting method of a display device and the display device, which are used for solving the technical problems that the display device works in a low-temperature environment and is easy to cause abnormal display pictures and the like.
In a first aspect, the present application provides a temperature adjustment method of a display device, the temperature adjustment method of the display device including:
establishing a mapping relation between the working temperature of a target area of the display device and the working current of a luminous element in the display device;
and determining a target working current of the luminous element according to the mapping relation, and adjusting the working temperature of the target area of the display device to be a preset temperature according to the target working current.
According to the temperature adjusting method of the display device, the target working current of the light emitting part is determined according to the mapping relation between the working temperature of the target area and the working current of the light emitting part, and the working temperature of the target area is adjusted to be the preset temperature according to the target working current. The working temperature of the display device in a low-temperature environment is kept at a preset temperature, the display device is prevented from running at a low temperature, and the display device is prevented from abnormal display pictures.
The "establishing a mapping relationship between the working temperature of the target area of the display device and the working current of the light emitting element in the display device" includes:
the working current of the luminous element is controlled to change according to a first preset rule, the working temperature of the target area of the display device is collected in the process of changing the working current of the luminous element, and the working temperature of the target area of the display device and the working current of the luminous element are in one-to-one correspondence to form a mapping relation.
Wherein the "controlling the working current of the light emitting element to change according to a first preset rule" includes:
and controlling the working current increment of the luminous element according to the initial working current of the luminous element and the preset current increment.
Wherein the "acquiring the operating temperature of the target area of the display device during the change of the operating current of the light emitting element" includes:
collecting the working temperature of the target area of the display device through at least one temperature sensor, wherein the at least one temperature sensor is arranged in the target area of the display device; the target area is positioned on the side of at least one of a first side, a second side, a third side and a fourth side which are sequentially connected with the middle frame of the display device; the luminous piece is arranged on the first side or the side where the first side is located, and at least part of the heat conducting piece is arranged between the luminous piece and the target area.
The method for adjusting the working temperature of the target area of the display device to a preset temperature according to the target working current further includes:
acquiring the working temperature of the target area;
judging whether the working temperature is less than the preset temperature;
when the working temperature is smaller than the preset temperature, acquiring the temperature variation of the working temperature relative to the preset temperature;
the "determining the target working current of the light emitting element according to the mapping relationship, and adjusting the working temperature of the target area of the display device to a preset temperature according to the target working current" includes:
determining the target working current of the luminous element according to the mapping relation and the temperature variation;
and controlling the working current of the luminous element to be the target working current, and adjusting the working temperature of the target area to be the preset temperature.
In a second aspect, the present application provides a display device, including:
the luminous element is used for emitting light and generating heat;
the temperature sensor is arranged in a target area of the display device and used for acquiring the working temperature of the target area of the display device;
the controller is electrically connected with the temperature sensor and the luminous element; the controller is used for determining a target working current of the light emitting element according to a mapping relation, and adjusting the working temperature of the target area of the display device to be a preset temperature according to the target working current, wherein the mapping relation is a corresponding relation between the working temperature of the target area of the display device and the working current of the light emitting element in the display device.
Wherein the display device further comprises;
the middle frame comprises a first side, a second side, a third side and a fourth side which are sequentially connected, the target area is positioned on the side where at least one of the first side, the second side, the third side and the fourth side is positioned, and the light emitting piece is arranged on the side where the first side or the first side is positioned;
the heat conduction piece is arranged between the luminous piece and the middle frame, is respectively connected with the middle frame and the luminous piece, and is used for conducting heat generated by the luminous piece when the luminous piece emits light to the middle frame.
The first side, the second side and the fourth side are all provided with the heat conducting piece, or the first side, the second side, the third side and the fourth side are all provided with the heat conducting piece.
Wherein, the material of middle frame is heat conduction metal.
The heat conducting piece is made of heat conducting glue, and the thickness of the heat conducting piece is 0.1-0.3 mm; the heat conduction coefficient of the heat conduction piece is more than 0.9W/mk, and the heat resistance of the heat conduction piece is less than 0.95 ℃/W.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional view of a display device according to a first embodiment of the present disclosure;
fig. 2 is a flowchart of a temperature adjustment method of a display device according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a method further included before a temperature adjustment method S300 of a display device according to an embodiment of the present application;
fig. 4 is a flowchart of a method for adjusting temperature of a display device S300 according to an embodiment of the present application;
fig. 5 is a flowchart of a method for adjusting temperature of a display device S100 according to an embodiment of the present application; fig. 6 is a flowchart of a method for adjusting temperature of a display device S110 according to an embodiment of the present application;
fig. 7 is a flowchart two of a method for adjusting temperature of a display device S110 according to the first embodiment of the present application;
fig. 8 is a schematic structural diagram of a middle frame according to a first embodiment of the present disclosure;
fig. 9 is a second schematic structural diagram of a middle frame according to the first embodiment of the present application;
fig. 10 is a schematic structural diagram of a middle frame and a heat conducting member according to an embodiment of the present disclosure;
FIG. 11 is a mapping relationship diagram according to a first embodiment of the present application;
fig. 12 is a schematic structural diagram of a middle frame and a heat conducting member according to a second embodiment of the present disclosure;
fig. 13 is a mapping relationship diagram provided in the second embodiment of the present application.
Description of the reference numerals:
the display device-1, the luminous element-10, the middle frame-20, the first edge-21, the second edge-22, the third edge-23, the fourth edge-24, the heat conducting element-30, the first target area-41, the second target area-42, the third target area-43, the fourth target area-44, the fifth target area-45, the sixth target area-46 and the back plate-50.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without undue burden, are within the scope of the present application.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the present specification, for convenience, words such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are used to describe positional relationships of constituent elements with reference to the drawings, only for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus are not to be construed as limiting the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction of the described constituent elements. Therefore, the present invention is not limited to the words described in the specification, and may be appropriately replaced according to circumstances.
In this specification, the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, it may be a fixed connection, a removable connection, or an integral connection; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intermediate members, or may be in communication with the interior of two elements. The meaning of the above terms in the present disclosure can be understood by one of ordinary skill in the art as appropriate.
With the development of photoelectric display technology and semiconductor manufacturing technology, LCD liquid crystal display devices (Thin Film Transistor-Liquid Crystal Display, TFT-LCD) with thin film transistors have been matured, and have been used more and more widely due to their light weight and convenience in carrying.
In the related art display device, an α -Si material is included in a channel layer of a thin film transistor, and the α -Si material has poor conductive effect at a low temperature. Therefore, the display device is slower to start when working in a low-temperature environment, and when the size of the display device is larger, the corresponding load is larger, and the low-temperature running state of the display device easily causes the failure of a gate driving circuit (GDL) in the display device, so that the scanning of the display device is blocked, and the display picture of the display device is abnormal and other problems are caused.
The application provides a temperature adjusting method of a display device, which is applied to the display device 1. The technical problem that the display device works in a low-temperature environment and is easy to cause abnormal display pictures is solved.
Referring to fig. 1 and 2, fig. 1 is a schematic cross-sectional structure of a display device according to an embodiment of the present application, and fig. 2 is a flowchart of a temperature adjustment method of a display device according to an embodiment of the present application.
The temperature adjusting method of the display device includes, but is not limited to, steps S100 and S300, and detailed descriptions about steps S100 and S300 are as follows.
S100: a mapping relationship between the operating temperature of the target area of the display device 1 and the operating current of the light emitting element 10 in the display device 1 is established.
The working current of the light emitting element 10 is the current required for driving the light emitting element 10 to emit light normally, and the working temperature of the target area is changed correspondingly while the working current of the light emitting element 10 is changed, and the rule of the change is the mapping relationship between the working temperature of the target area and the working current of the light emitting element 10.
Wherein, alternatively, the target area of the display device 1 may be any area within the display device 1, which is not limited in this application. The number of target areas may also be one or more. For example, the target area is an area of the middle frame 20 or an area on the display panel, and when the target area is plural, the plural target areas may be different areas on the middle frame 20 or different areas on the display panel.
It should be noted that, in the plurality of different target areas, the mapping relationship of each target area may be the same or different, which is not limited in the present application.
S300: and determining a target working current of the luminous element 10 according to the mapping relation, and adjusting the working temperature of the target area of the display device 1 to be a preset temperature according to the target working current.
The preset temperature is the temperature of the target area when the display device works under normal environmental conditions.
According to the temperature regulation method of the display device, provided by the application, the partial area in the display device 1 is heated by heat generated by working current of the luminous element 10, so that the working temperature of the display device 1 is improved, additional heating elements are not needed, the number of internal structures of the display device 1 is reduced, and the preparation cost of the display device 1 is reduced.
In the temperature adjustment method of the display device provided by the application, the target working current of the light emitting element 10 is determined according to the mapping relation between the working temperature of the target area and the working current of the light emitting element 10, and the working temperature of the target area is adjusted to be a preset temperature according to the target working current. The working temperature of the display device 1 in the low-temperature environment is kept at a preset temperature, so that the low-temperature running state of the display device 1 is avoided, and the display device 1 is further prevented from abnormal display pictures and the like.
Referring to fig. 3, fig. 3 is a flowchart of a method for adjusting a temperature of a display device according to an embodiment of the present disclosure. The step S300 further includes steps S210, S220, and S230 before "determining the target operating current of the light emitting element 10 according to the mapping relation, and adjusting the operating temperature of the target area of the display device 1 to the preset temperature according to the target operating current", and the detailed descriptions of the steps S210, S220, and S230 are as follows.
S210: and acquiring the working temperature of the target area.
Alternatively, the present application does not limit how to acquire the working temperature of the target area, and may be detection by a temperature sensor or other acquisition methods.
S220: and judging whether the working temperature is smaller than the preset temperature.
S230: and when the working temperature is smaller than the preset temperature, acquiring the temperature variation of the working temperature relative to the preset temperature.
Alternatively, if the working temperature is determined to be greater than the preset temperature, the working current of the light emitting element 10 may be adjusted or not adjusted.
In this embodiment, the temperature variation refers to a ratio of the preset temperature to the operating temperature. In other embodiments, the temperature variation may be a difference between the preset temperature and the working temperature, and the form of the temperature variation is not limited in this application.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for adjusting temperature of a display device S300 according to an embodiment of the present disclosure. The step S300 of "determining the target operating current of the light emitting element 10 according to the mapping relationship, and adjusting the operating temperature of the target area of the display device 1 to the preset temperature according to the target operating current" includes steps S310 and S320, and the detailed descriptions of steps S310 and S320 are as follows.
S310: the target operating current of the light emitting element 10 is determined according to the map and the temperature variation.
Specifically, the temperature variation is substituted into the map, the current variation may be determined, and the current variation and the initial current of the light emitting element 10 may be calculated to obtain the target operating current of the light emitting element 10.
Also, in the present embodiment, the current variation amount refers to a ratio of the target operating current to the operating current. In other embodiments, the current variation may be a difference between the target operating current and the operating current, and the form of the current variation is not limited in this application.
S320: and controlling the working current of the luminous element 10 to be the target working current, and adjusting the working temperature of the target area to be the preset temperature.
The operating current of the light emitting element 10 is controlled to be the target operating current, in other words, the current supplied to the light emitting element 10 is controlled to be the target operating current.
Referring to fig. 5, fig. 5 is a flowchart illustrating a method for adjusting temperature of a display device S100 according to an embodiment of the present disclosure. The step S100 of "establishing a mapping relationship between the operating temperature of the target area of the display device 1 and the operating current of the light emitting element 10 in the display device 1" includes a step S110, and the detailed description of the step S110 is as follows.
S110: the working current of the light emitting element 10 is controlled to change according to a first preset rule, the working temperature of the target area of the display device 1 is collected in the process of changing the working current of the light emitting element 10, and the working temperature of the target area of the display device 1 and the working current of the light emitting element 10 form a one-to-one correspondence to form a mapping relation.
Referring to fig. 6, fig. 6 is a flowchart illustrating a method for adjusting a temperature of a display device S110 according to an embodiment of the present disclosure. The "controlling the operating current of the light emitting element 10 to change according to the first preset rule" described in step S110 includes step S111, and the detailed description about step S111 is as follows.
S111: and controlling the working current of the luminous element 10 to be increased according to the initial working current of the luminous element 10 and the preset current increment.
In this embodiment, the preset current increment refers to a ratio of sequentially increasing the operating current. In other embodiments, the preset current increment may be a value that the working current sequentially increases, and the form of the preset current increment is not limited in this application.
In this embodiment, the preset current increment is about 7% to 9%. Specifically, the current value of the initial working current represents 100%, the working current of the light emitting element 10 is controlled to be increased according to the initial working current and the preset current increment, and is respectively increased to be a first current, a second current, a third current and a fourth current, the ratio of the first current to the initial working current is 108%, the ratio of the second current to the initial working current is 117%, the ratio of the third current to the initial working current is 125%, and the ratio of the fourth current to the initial working current is 133%.
When the light emitting element 10 is the first current, the working temperature of the target area is the first temperature. When the light emitting element 10 is the second current, the working temperature of the target area is the second temperature. When the light emitting element 10 is the third current, the operating temperature of the target area is a third temperature. When the light emitting element 10 is the fourth current, the operating temperature of the target area is a fourth temperature. And calculating the first current, the first temperature, the second current, the second temperature, the third current, the third temperature, the fourth current and the fourth temperature, and establishing the mapping relation.
Alternatively, in other embodiments, the working current of the light emitting element 10 may be controlled to be increased to a fifth current, a sixth current or even more current values according to the initial working current and the preset current increment, and a fifth temperature, a sixth temperature or even more temperature values of the target area may be obtained, and the mapping relationship may be established by calculating according to all the current values and the temperature values.
Referring to fig. 7, fig. 7 is a flowchart of a method for adjusting a temperature of a display device S110 according to an embodiment of the present disclosure. The "acquisition of the operating temperature of the target area of the display device 1 during the change of the operating current of the light emitting element 10" described in step S110 includes step S112, and the detailed description of step S112 is as follows:
s112: the working temperature of the target area of the display device 1 is acquired by at least one temperature sensor, which is arranged in the target area of the display device 1.
The target area is located on a side of at least one of a first side 21, a second side 22, a third side 23, and a fourth side 24 of the middle frame 20 of the display device 1, which are sequentially connected. The light emitting member 10 is disposed on the first side 21 or on the side where the first side 21 is located, and at least a portion of the heat conducting member 30 is disposed between the light emitting member 10 and the target area.
Referring to fig. 1 and 2 again, the present application further provides a display device 1, where the display device 1 includes a light emitting member 10, at least one temperature sensor (not shown) and a controller (not shown). The luminous element 10 is used for emitting light and generating heat. The at least one temperature sensor is arranged in a target area of the display device 1 and is used for acquiring the working temperature of the target area of the display device 1. The controller is electrically connected to the temperature sensor and the luminous element 10. The controller is configured to determine a target operating current of the light emitting element 10 according to a mapping relationship, and adjust an operating temperature of the target area of the display device 1 to a preset temperature according to the target operating current. The mapping relationship is a correspondence relationship between an operating temperature of the target area of the display device 1 and an operating current of the light emitting element 10 in the display device 1.
Optionally, the lighting element 10 includes, but is not limited to, an LED light bar. The light emitting element 10 emits light and generates heat, and the heat is directly or indirectly transferred to the target area of the display device 1 to raise the temperature of the target area of the display device 1. When the temperatures of the target areas located at different positions on the display device 1 are raised to the preset temperature, the problems that the display device 1 works in a low-temperature environment and the display images are abnormal can be avoided.
Alternatively, the target area of the display device 1 may be any area within the display device 1, which is not limited in this application. The number of target areas may also be one or more.
The controller is configured to determine a target operating current of the lighting element 10 according to the mapping relationship. Specifically, the controller determines the target working current of the light emitting element 10 according to the working temperature of the target area, the preset temperature and the mapping relation, and controls the current in the light emitting element 10 to reach the target working current, so that the heat generated by the light emitting element 10 is changed, and the temperature of the target area is changed and reaches the preset temperature.
In the display device 1 provided in this application, the temperature sensor is configured to collect a working temperature of the target area, and the controller determines the target working current of the light emitting element 10 according to the working temperature and the mapping relationship, and controls the current in the light emitting element 10 to be the target working current, so that the working temperature of the target area is adjusted to be a preset temperature. The working temperature of the display device 1 in the low-temperature environment can be kept at the preset temperature, so that the low-temperature running state of the display device 1 is avoided, and the problems of abnormal display picture and the like of the display device 1 are further avoided.
Referring to fig. 1 and 8, fig. 8 is a schematic structural diagram of a middle frame according to a first embodiment of the present disclosure. The display device 1 further comprises a middle frame 20 and a heat conducting member 30. The middle frame 20 includes a first side 21, a second side 22, a third side 23, and a fourth side 24 that are sequentially connected, the target area is located on at least one side of the first side 21, the second side 22, the third side 23, and the fourth side 24, and the light emitting element 10 is located on the first side 21 or the first side 21.
The heat conducting member 30 is disposed between the light emitting member 10 and the middle frame 20, and is respectively connected to the middle frame 20 and the light emitting member 10, so as to conduct heat generated by the light emitting member 10 when light is emitted to the middle frame 20.
The middle frame 20 is made of heat conductive metal. Alternatively, in the present embodiment, the material of the middle frame 20 is iron, and in other embodiments, the material of the middle frame 20 may be copper or other heat conductive metals. The middle frame 20 may be made of other composite materials with better thermal conductivity.
The heat conducting member 30 is disposed between the light emitting member 10 and the middle frame 20, and connects the middle frame 20 and the light emitting member 10, respectively. Specifically, the display device 1 further includes a back plate 50 for accommodating the middle frame 20 and the light emitting element 10. The heat conducting member 30 includes a first heat conducting portion and a second heat conducting portion, wherein the first heat conducting portion is disposed between the back plate 50 and the light emitting member 10, and the second heat conducting portion is connected to one side of the middle frame 20 facing the light emitting member 10.
Referring to fig. 8 and 9, fig. 9 is a schematic diagram of a middle frame according to a first embodiment of the present disclosure. Specifically, in the present embodiment, the target areas include six target areas, namely, a first target area 41, a second target area 42, a third target area 43, a fourth target area 44, a fifth target area 45, and a sixth target area 46, wherein the first target area 41, the second target area 42, and the third target area 43 are provided on the first side 21, and the fourth target area 44, the fifth target area 45, and the sixth target area 46 are provided on the third side 23.
Referring to fig. 10 and 11, fig. 10 is a schematic structural diagram of a middle frame and a heat conducting member according to the first embodiment of the present application, and fig. 11 is a mapping relation diagram according to the first embodiment of the present application. In one embodiment, the heat conducting member 30 is disposed on each of the first side 21, the second side 22 and the fourth side 24.
The controller is used for respectively controlling the working current of the light emitting element 10 to be the first current, the second current, the third current and the fourth current, the first temperature, the second temperature, the third temperature and the fourth temperature can be obtained in six target areas, and the mapping relation is calculated through the working current of the light emitting element 10 and the working temperature of the target areas.
For example, the mapping relationship of the second target area 42 is an operating temperature t=0.7452i+0.5369, the mapping relationship of the fifth area is an operating temperature t=0.3745i+0.6261, and i is an operating current of the light emitting device 10.
Generally, the fifth target area 45 is a position on the middle frame farthest from the light emitting element 10 (heat source), and when the operating temperature of the fifth target area 45 is greater than the preset temperature, it can be stated that the operating temperature of the display device 1 is greater than the preset temperature, so that the temperature of the opposite side of the light emitting element 10 is monitored without temperature monitoring of other positions.
The second target area 42 is the position closest to the light emitting element 10 (heat source), and the monitoring of the second target area 42 can prevent the excessive temperature caused by the excessive current of the light emitting element 10, and avoid the abnormal operation of the display device 1.
Referring to fig. 12 and 13, fig. 12 is a schematic structural diagram of a middle frame and a heat conducting member according to a second embodiment of the present application, and fig. 13 is a mapping relation diagram according to the second embodiment of the present application. In another embodiment, the heat conducting member 30 is disposed on each of the first side 21, the second side 22, the third side 23, and the fourth side 24.
The heat conducting members 30 are provided on four sides, so that the temperature rise of the whole middle frame 20 can be more uniform. And the mapping relationship may vary with the installation area of the heat conductive member 30.
For example, in the present embodiment, the mapping relationship of the second region is an operating temperature t=0.6189i+0.4722, the mapping relationship of the fifth region is an operating temperature t=0.3507i+0.6487, and i is an operating current of the light emitting element 10.
In this embodiment, the heat conducting member 30 is made of a heat conducting adhesive, so that it is convenient to attach.
Specifically, if the thickness of the heat conducting member 30 is less than 0.1mm, the heat emitted by the light emitting member 10 may not be quickly and effectively conducted to the target area, so that the display device 1 may still have poor display and other phenomena; if the thickness of the heat conductive member 30 is greater than 0.3mm, the overall thickness of the display device 1 may be too thick, which is disadvantageous for the light and thin performance of the display device 1, and is disadvantageous for the heat dissipation performance of the display device 1.
Therefore, the thickness of the heat conductive member 30 is 0.1mm to 0.3mm. The heat emitted from the light emitting member 10 can be effectively conducted to the target area, and the lightness and thinness and heat dissipation of the display device 1 can be ensured. Alternatively, the thickness of the heat conductive member 30 may be 0.1mm, or 0.15mm, or 0.18mm, or 0.20mm, or 0.26mm, or 0.30mm, or other values within a range of 0.1mm to 0.3mm.
The heat conduction coefficient of the heat conduction member 30 is more than 0.9W/mk, and the thermal resistance of the heat conduction member 30 is less than 0.95 ℃/W. So that the heat conductive member 30 can effectively conduct the heat of the light emitting member 10 to the target area.
While the foregoing is directed to embodiments of the present application, it will be appreciated by those of ordinary skill in the art that numerous modifications and variations can be made without departing from the principles of the present application, and such modifications and variations are also considered to be within the scope of the present application.
Claims (10)
1. A temperature adjustment method of a display device, characterized in that the temperature adjustment method of the display device includes:
establishing a mapping relation between the working temperature of a target area of the display device and the working current of a luminous element in the display device;
and determining a target working current of the luminous element according to the mapping relation, and adjusting the working temperature of the target area of the display device to be a preset temperature according to the target working current.
2. The method of claim 1, wherein the step of establishing a map of the operating temperature of the target area of the display device and the operating current of the light emitting element in the display device comprises:
the working current of the luminous element is controlled to change according to a first preset rule, the working temperature of the target area of the display device is collected in the process of changing the working current of the luminous element, and the working temperature of the target area of the display device and the working current of the luminous element are in one-to-one correspondence to form a mapping relation.
3. The method of claim 2, wherein the controlling the operating current of the light emitting element to vary according to a first preset rule comprises:
and controlling the working current increment of the luminous element according to the initial working current of the luminous element and the preset current increment.
4. The method of claim 2, wherein the step of acquiring the operating temperature of the target area of the display device during the change of the operating current of the light emitting element comprises:
collecting the working temperature of the target area of the display device through at least one temperature sensor, wherein the at least one temperature sensor is arranged in the target area of the display device; the target area is positioned on the side of at least one of a first side, a second side, a third side and a fourth side which are sequentially connected with the middle frame of the display device; the luminous piece is arranged on the first side or the side where the first side is located, and at least part of the heat conducting piece is arranged between the luminous piece and the target area.
5. The method according to claim 2, wherein before determining the target operating current of the light emitting element according to the map and adjusting the operating temperature of the target area of the display device to a preset temperature according to the target operating current, further comprises:
acquiring the working temperature of the target area;
judging whether the working temperature is less than the preset temperature;
when the working temperature is smaller than the preset temperature, acquiring the temperature variation of the working temperature relative to the preset temperature;
the "determining the target working current of the light emitting element according to the mapping relationship, and adjusting the working temperature of the target area of the display device to a preset temperature according to the target working current" includes:
determining the target working current of the luminous element according to the mapping relation and the temperature variation;
and controlling the working current of the luminous element to be the target working current, and adjusting the working temperature of the target area to be the preset temperature.
6. A display device, comprising:
the luminous element is used for emitting light and generating heat;
the temperature sensor is arranged in a target area of the display device and used for acquiring the working temperature of the target area of the display device;
the controller is electrically connected with the temperature sensor and the luminous element; the controller is used for determining a target working current of the light emitting element according to a mapping relation, and adjusting the working temperature of the target area of the display device to be a preset temperature according to the target working current, wherein the mapping relation is a corresponding relation between the working temperature of the target area of the display device and the working current of the light emitting element in the display device.
7. The display device according to claim 6, wherein the display device further comprises;
the middle frame comprises a first side, a second side, a third side and a fourth side which are sequentially connected, the target area is positioned on the side where at least one of the first side, the second side, the third side and the fourth side is positioned, and the light emitting piece is arranged on the side where the first side or the first side is positioned;
the heat conduction piece is arranged between the luminous piece and the middle frame, is respectively connected with the middle frame and the luminous piece, and is used for conducting heat generated by the luminous piece when the luminous piece emits light to the middle frame.
8. The display device according to claim 7, wherein the heat conductive member is provided on each of the first side, the second side, and the fourth side, or the heat conductive member is provided on each of the first side, the second side, the third side, and the fourth side.
9. The display device of claim 7, wherein the middle frame is made of a heat conductive metal.
10. The display device according to any one of claims 7 to 8, wherein the heat conductive member is made of a heat conductive adhesive, and the thickness of the heat conductive member is 0.1mm to 0.3mm; the heat conduction coefficient of the heat conduction piece is more than 0.9W/mk, and the heat resistance of the heat conduction piece is less than 0.95 ℃/W.
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| CN202310193098.6A CN116256913A (en) | 2023-02-21 | 2023-02-21 | Temperature adjusting method of display device and display device |
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| CN202310193098.6A CN116256913A (en) | 2023-02-21 | 2023-02-21 | Temperature adjusting method of display device and display device |
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