CN218122974U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN218122974U CN218122974U CN202222090611.2U CN202222090611U CN218122974U CN 218122974 U CN218122974 U CN 218122974U CN 202222090611 U CN202222090611 U CN 202222090611U CN 218122974 U CN218122974 U CN 218122974U
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Abstract
The application discloses a display panel and a display device, wherein the display panel comprises a light source pixel array substrate, a plurality of light-emitting units are arranged on the light source pixel array substrate, and the plurality of light-emitting units are divided into a plurality of independently controlled control subareas; the display panel further includes: the temperature detection modules are arranged and respectively correspond to the control subareas so as to respectively detect the temperatures of different control subareas and generate temperature information; the processing module receives temperature information of different control subareas, calculates according to real-time temperature represented by the temperature information and preset reference temperature, and outputs control signals corresponding to the different control subareas; and the control module receives the control signals and respectively and independently controls the brightness of the control subareas. This application has reduced display panel's consumption through above mode, improves display panel's light source utilization ratio.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the rapid development of science and technology, the display technology is being iterated at an extremely fast speed, the display performance of the display device is continuously improved, and the display device is applied to various electronic devices and is favored by users, for example, the micro led display technology and the miniLED display technology are applied as the latest generation display technology to be successfully carried on the display product.
In the prior art, the principle of the new generation of display technologies, namely, micro LEDs and minileds, being capable of realizing precise dynamic backlight effect lies in that the size of LEDs for realizing light emitting effect is precisely limited, but high-density LEDs also cause high heat generation. At present, the reduction of the power consumption of the liquid crystal display can be realized by reducing data transmission and reducing the refresh rate, and the absolute value of the voltage difference of liquid crystal driving is reduced by optimizing the inversion mode, but the application industries of many displays have requirements on the refresh rate, so the space for reducing the power consumption is limited.
Therefore, how to reduce the power consumption of the display panel and improve the utilization rate of the light source of the display panel becomes an urgent problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a display panel and a display device so as to reduce the power consumption of the display panel and improve the utilization rate of a light source of the display panel.
The application discloses a display panel, which comprises a light source pixel array substrate, wherein a plurality of light-emitting units are arranged on the light source pixel array substrate, and the plurality of light-emitting units are divided into a plurality of independently controlled control subareas; the display panel further includes: the temperature detection modules are arranged and correspond to the control partitions respectively so as to detect the temperatures of different control partitions respectively and generate temperature information; the processing module receives temperature information of different control subareas, calculates according to real-time temperature represented by the temperature information and preset reference temperature, and outputs control signals corresponding to the different control subareas; and the control module receives the control signals and respectively and independently controls the brightness of the control subareas.
Optionally, the number of the temperature detection modules is equal to the number of the control partitions, and the temperature detection modules and the control partitions are arranged in a one-to-one correspondence manner.
Optionally, the number of the temperature detection modules is equal to n times of the number of the control partitions, each control partition is provided with n temperature detection modules, the temperature information is an average value of a plurality of temperatures detected by the plurality of temperature detection modules, and n is a natural number greater than 1.
Optionally, the control module receives and controls the brightness of all the light emitting units in the control partition according to the control signal.
Optionally, the control module receives and controls the number of the lighting units in the control partition according to the control signal.
Optionally, the ratio of the number of the light-emitting units that are lit in each control partition to the total number of the light-emitting units is greater than or equal to 2/3, and the unlit light-emitting units are uniformly arranged.
Optionally, the size of the control partition is greater than or equal to 2 square centimeters and less than or equal to 4 square centimeters.
Optionally, the light emitting unit is disposed on one surface of the light source pixel array substrate, and the temperature detection module is disposed on another surface of the light source pixel array substrate away from the light emitting unit and is disposed corresponding to the control partition respectively.
Optionally, each of the light emitting units includes a red light emitting chip, a green light emitting chip, and a blue light emitting chip, and each of the red light emitting chip, the green light emitting chip, and the blue light emitting chip is independently controllable; the preset reference temperature is 40 ℃.
The application also discloses a display device, which comprises the display panel.
This application is through dividing a plurality of luminescence units on the light source pixel array substrate into different control subareas, utilize temperature detection module to acquire the temperature of different control subareas, and generate the real-time temperature of different control subareas, calculate the real-time temperature that will generate and predetermine the benchmark temperature through processing module, and output corresponds the control signal of different control subareas, recycle control module and receive control signal, the luminance of a plurality of control subareas of independent control respectively, thereby reach the effect that reduces the display panel consumption, improve display panel's light source utilization ratio.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application and that, without inventive involvement, further drawings can be derived by those skilled in the art, on the basis of which:
FIG. 1 is a block diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a block diagram of a module connection according to an embodiment of the present disclosure;
FIG. 3 is a block diagram of a light-emitting unit according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an embodiment of a display device according to the present application.
10, a display device; 100. a display panel; 200. a light source pixel array substrate; 300. a control module; 500. a processing module; 600. a temperature detection module; 110. controlling the partition; 120. a light emitting unit; 121. a red light emitting chip; 122. a green light emitting chip; 123. and a blue light emitting chip.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless stated otherwise, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and any variations thereof, are intended to cover a non-exclusive inclusion, which may have the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or combinations thereof.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application is described in detail below with reference to the drawings and alternative embodiments, and it should be noted that any combination of the embodiments or technical features described below can form a new embodiment without conflict.
Fig. 1 is a block diagram of a display panel according to an embodiment of the present disclosure, and fig. 2 is a block diagram of a module connection according to an embodiment of the present disclosure, as shown in fig. 1 and fig. 2, a display panel 100 according to the present disclosure includes a light source pixel array substrate 200, a plurality of light emitting units 120 are disposed on the light source pixel array substrate 200, and the plurality of light emitting units 120 are divided into a plurality of independently controlled control partitions 110; the display panel 100 further includes: the temperature detection module 600, the processing module 500 and the control module 300, wherein the temperature detection module 600 is provided in plurality and respectively corresponds to the plurality of control subareas 110, so as to respectively detect the temperatures of different control subareas 110 and generate temperature information; the processing module 500 receives the temperature information of the different control sub-areas 110, calculates the real-time temperature represented by the temperature information and the preset reference temperature, and outputs the control signals corresponding to the different control sub-areas 110; and the control module 300 receives the control signal and independently controls the brightness of the control partitions 110.
This application divides a plurality of luminescence units 120 on light source pixel array substrate 200 into different control subareas 110, utilize temperature detection module 600 to obtain the real-time temperature of different control subareas 110, calculate the real-time temperature that will generate and predetermine the benchmark temperature through processing module 500, and output the control signal that corresponds different control subareas 110 and give control module 300, the luminance of a plurality of control subareas 110 of respective independent control, mainly when the temperature of control subarea 110 is too high, thereby reduce the luminance of control subarea 110 and reach the effect that reduces the power consumption of display panel 100, reduce the power consumption and can reduce the temperature, improve the light source utilization ratio of display panel 100.
The light emitting unit 120 is disposed on one surface of the light source pixel array substrate 200, and the temperature detecting module 600 is disposed on the other surface of the light source pixel array substrate 200 away from the light emitting unit 120 and respectively corresponding to the positions of the control sub-areas 110.
When the temperature detection module 600 detects that the temperature in one or more control sub-areas 110 exceeds the preset reference temperature, the temperature difference between the preset reference temperature and the control sub-areas 110 is calculated, and the temperature difference is converted into a control signal to adjust the brightness level of the light emitting units 120 in the control sub-areas 110 corresponding to the temperature exceeding the preset reference temperature, so that the effect of reducing the power consumption of the display panel 100 is achieved, and the utilization rate of the display panel 100 is improved.
It should be noted that the display panel 100 in the present application may be a display panel 100 in a mini LED display, and may also be a display panel 100 in a Micro LED display, and the present application is only illustrated by a mini LED, where the light emitting unit 120 in the present application may be an LED lamp of the display panel 100 in the mini LED display, and for the problem of power consumption of the mini LED display, the power consumption of the LED lamp in the display panel 100 occupies a considerable portion of the whole display; meanwhile, as the large-area LED lamp continuously emits light along with the increase of the power-on time, the temperature of the LED lamp is increased, the optimal working temperature of the display is 0-40 ℃, when the temperature exceeds 40 ℃, the heat dissipation of the mini LED display is influenced, the service life of the display is shortened, and the light-emitting efficiency of the LED lamp is also influenced; the environment around the LED lamp is controlled within the better working temperature by detecting the temperature and locally adjusting the temperature.
In view of the above problems, the present application is improved for a light emitting unit, and fig. 3 is a block diagram of a structure of a light emitting unit in an embodiment of a display panel of the present application, as shown in fig. 3, each light emitting unit 120 in the present application includes a red light emitting chip 121, a green light emitting chip 122, and a blue light emitting chip 123, and each of the red light emitting chip 121, the green light emitting chip 122, and the blue light emitting chip 123 can be controlled independently; the preset reference temperature is 40 degrees celsius.
When the temperature detection module 600 detects temperatures in different control partitions 110, the detected real-time temperature exceeds 40 degrees centigrade, the processing module 500 calculates a difference value according to the detected real-time temperature and a preset reference temperature, converts the calculated temperature difference value into a control signal, receives the control signal through the control module 300, and controls the brightness of the light emitting unit 120 in the corresponding control partition 110 according to the control signal, so as to reduce the power consumption in the control partition 110, and further reduce the power consumption of the whole display panel 100, generally, when the temperature of the light emitting unit is too high, the brightness is reduced or the shutdown operation is performed by taking the light emitting unit as a unit, so as to avoid the display problem;
of course, since the red light-emitting chip 121, the green light-emitting chip 122, and the blue light-emitting chip 123 in each light-emitting unit 120 can be controlled individually in the present application, under specific circumstances, the brightness of the light-emitting chip of a certain color can also be controlled individually, for example, when the display screen is turned to blue, the brightness of the blue light-emitting chip 123 in the red light-emitting chip 121, the green light-emitting chip 122, and the blue light-emitting chip 123 in one light-emitting unit 120 can be adjusted down to improve the color shift problem, and such an operation can improve the display quality of the display panel 100 on the basis of reducing the power consumption of the display panel 100 and improving the utilization ratio of the display panel 100 to the light source.
Further, controlling the brightness of the sub-area may be implemented by adjusting the number of the light emitting units 110 in the sub-area, and specifically, the control module 300 receives and controls the number of the light emitting units 120 in the sub-area 110 according to the control signal. Further, it is considered that, after a predetermined time for turning off a part of the light emitting units 120, if the temperature of the control section 110 is not lowered below the predetermined temperature, another part of the light emitting units 120 in the control section 110 may be turned off.
Wherein, the compensation value after the luminous efficiency of the light emitting unit 120 is reduced can be calculated by calculating the temperature difference value; calculating the total luminous intensity of the luminous units 120 in the control subarea 110 to obtain the number of the luminous units 120 of the control subarea 110;
since the temperature also affects the luminous efficiency of the LED lamp, it is known that when the temperature rises by 1 ℃, the luminous efficiency decreases by 1%, the brightness levels of different control sub-areas 110 are stored in corresponding addresses, so as to obtain the luminous intensity of the light-emitting units 120 in the corresponding control sub-areas 110, a compensation value after the luminous efficiency of the LED lamp decreases corresponding to the temperature difference is calculated, and finally the total luminous intensity of the LED lamp is the sum of the brightness level corresponding to the power consumption of the display panel 100 and the compensation value, so as to obtain the optimal number of the light-emitting units 120 in a certain control sub-area 110, and the control module 300 receives and controls the number of the light-emitting units 120 in the control sub-area 110 according to the control signal, thereby maximizing the light energy utilization rate and reducing the mini LED backlight power consumption.
According to the method, the temperatures of different control subareas 110 in the display panel 100 are detected, the temperature information of the different control subareas 110 is received by the processing module 500, calculation is carried out according to the real-time temperature represented by the temperature information and the preset reference temperature, and control signals corresponding to the different control subareas 110 are output; the method comprises the steps of changing the number of light emitting of LED lamps in control partitions 110 corresponding to a display panel 100, and achieving the effect of reducing the power consumption of a mini LED light source, firstly, dividing the display panel 100 into a plurality of areas, detecting the temperatures of different control partitions 110 by using a multi-channel temperature sensor, comparing the temperatures of the different control partitions 110 with preset reference temperatures by using a processing module 500, starting the processing module 500 if the temperatures exceed 40 ℃, calculating the difference value delta T between the preset reference temperatures and real-time temperatures, obtaining the power dissipated when the optimal temperatures are exceeded by using the calculated difference value between the preset reference temperatures and the real-time temperatures, meanwhile, reducing the power consumption of the mini LED backlight by using the same ratio, converting the temperature difference value into a control signal by using a PID algorithm, and controlling the brightness levels required by the different control partitions 110 by using a control module 300.
In order to obtain the real-time temperature in the corresponding control partition 110, the number of the temperature detection modules 600 may be equal to the number of the control partitions 110, and the temperature detection modules 600 and the control partitions 110 are arranged in a one-to-one correspondence manner. The method includes the steps of detecting a corresponding control sub-area 110 through a temperature detection module 600 to obtain a real-time temperature in the corresponding sub-area, calculating a difference value through the real-time temperature and a preset reference temperature after receiving the real-time temperature in the control sub-area 110 through a processing module 500, converting the calculated temperature difference value into a control signal, correspondingly controlling the brightness of the control sub-area 110 exceeding the preset reference temperature, and reducing the power consumption of the display panel 100 by adjusting the brightness of the corresponding control sub-area 110.
In addition, for the real-time temperature of the different control subareas 110 of more accurate detection to calculate the difference between the real-time temperature and the preset reference temperature in the different control subareas 110, convert the temperature difference into a control signal, and improve the accuracy of the control signal, so as to realize the accurate control of the brightness in the control subareas 110, the application further improves as follows:
the number of the temperature detection modules 600 is equal to n times of the number of the control sections 110, each control section 110 is provided with n temperature detection modules 600, and the temperature information is an average value of a plurality of temperatures detected by the plurality of temperature detection modules 600, wherein n is a natural number greater than 1.
That is, the real-time temperatures in one control sub-area 110 are detected by the plurality of temperature detection modules 600, the values of the detected real-time temperatures are averaged to obtain an average temperature value in each control area, and after the average is obtained through multiple measurements, the obtained real-time temperature value is closer to the real temperature, so that a difference between the obtained average temperature value and a preset reference temperature can be calculated, and the calculated temperature difference value is converted into a control signal, so that the obtained control signal is relatively accurate, and after the control signal is received by the control module 300, the brightness of the control sub-area 110 exceeding the preset reference temperature is independently controlled, so that the work efficiency of reducing the power consumption of the display panel 100 can be improved, and the light source utilization rate of the display panel 100 can be effectively improved.
In addition, in order to enable the temperature detection module 600 to detect the temperature of the control partition 110 more sensitively and not to affect the brightness of the entire display panel 100 when adjusting the brightness of the control partition 110, the present application is designed for the size of the control partition 110, and the size of the control partition 110 in the present application is greater than or equal to 2 square centimeters and less than or equal to 4 square centimeters.
By the above limitation on the size of the control partition 110, when the control module 300 adjusts the brightness in the corresponding control partition 110 according to the control signal, the overall brightness of the display panel 100 is not affected, and the situation that the brightness is too dark in the local area of the control partition 110 correspondingly adjusted by the display panel 100 is not easily caused, meanwhile, under the above size limitation, the temperature detection module 600 can also detect the moderate area temperature, so as to avoid the situation that the detected temperature is inaccurate due to too large or too small detection area, and affect the brightness effect of the control partition 110 controlled and adjusted by the control module 300; the precision of the control module 300 controlling the brightness of the control sub-area 110 is further improved, the power consumption of the display panel 100 is improved, and the light source utilization rate of the display panel 100 is improved.
After the control module 300 receives the control signal, the luminance of the control partition 110 is controlled according to the control signal, and the following two control methods are proposed in the present application, specifically as follows:
the method I comprises the following steps: the control module 300 receives and controls the brightness of all the light emitting units 120 in the control section 110 according to the control signal. That is, the brightness of all the light emitting units 120 in the control sub-area 110 is adjusted to form the adjustment of the power consumption in the whole control sub-area 110, so as to reduce the power consumption in the whole control sub-area 110, when the temperature in a certain control sub-area 110 or a certain number of control sub-areas 110 exceeds the preset reference temperature, and after the control module 300 receives the control signal, the brightness of all the light emitting units 120 in the control sub-area 110 exceeding the preset reference temperature is adjusted, so as to form the "global" brightness adjustment, so that the power consumption of the display panel 100 can be rapidly reduced.
In the second mode, the ratio of the number of the light emitting units 120 that are lit in each control section 110 to the total number of the light emitting units 120 is greater than or equal to 2/3, and the unlit light emitting units 120 are uniformly arranged. When the temperature in a certain control subarea 110 or a certain control subarea 110 exceeds a preset reference temperature, after the control module 300 receives a control signal, brightness adjustment is performed on a certain light-emitting unit 120 in the control subarea 110 which exceeds the preset reference temperature, so that brightness adjustment of accurate aiming is formed, and the power consumption of the display panel 100 can be accurately reduced; in addition, in order to avoid the situation that when the brightness of some light emitting units 120 in the control partition 110 is adjusted, local brightness unevenness occurs in the control partition 110, and the display effect of the display panel 100 is affected, therefore, when some light emitting units 120 are controlled to be turned on, the light emitting units 120 which are not turned on are uniformly arranged, for example, taking the arrangement mode of the light emitting units in the control partition as 3 × 3 as an example, three diagonal uniform turn-off can be selected, so that the formed brightness effect is uniform, and the overall display effect of the display panel 100 cannot be affected on the basis of reducing the power consumption of the display panel 100 and improving the light source utilization rate of the display panel 100.
Fig. 4 is a schematic diagram of an embodiment of a display device according to the present application, and as shown in fig. 4, the present application further discloses a display device 10, and the display device 10 includes the display panel 100.
According to the method, the display panel 100 is divided into different control subareas 110, the temperature of the different control subareas 110 in the display panel 100 is obtained by using the temperature detection module 600, when the temperature in one or more control subareas 110 exceeds a preset reference temperature, the obtained temperature of the different control subareas 110 is compared with the preset reference temperature by using the processing module 500, the preset reference temperature is 40 ℃ of the temperature of the display panel 100 in a normal working state, the temperature difference between the preset reference temperature and the control subareas 110 is calculated by using the processing module 500, the temperature difference is converted into a control signal, and finally the brightness level of the light-emitting units 120 in the control subareas 110 is adjusted by using the control module 300, so that the effect of reducing the power consumption of the display panel 100 is achieved, and the utilization rate of the display panel 100 is improved; the power consumption of the display apparatus 10 is further reduced.
It should be noted that the inventive concept of the present application can form a great variety of embodiments, but the application documents are limited in space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after each embodiment or technical feature is combined, the original technical effect will be enhanced.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A display panel comprises a light source pixel array substrate, wherein a plurality of light-emitting units are arranged on the light source pixel array substrate; the display panel further includes:
the temperature detection modules are arranged correspondingly to the control subareas respectively, so as to detect the temperatures of different control subareas respectively and generate temperature information;
the processing module is used for receiving the temperature information of different control subareas, calculating according to the real-time temperature represented by the temperature information and a preset reference temperature, and outputting control signals corresponding to the different control subareas; and
and the control module receives the control signals and respectively and independently controls the brightness of the control subareas.
2. The display panel of claim 1, wherein the number of the temperature detection modules is equal to the number of the control partitions, and the temperature detection modules and the control partitions are arranged in a one-to-one correspondence.
3. The display panel according to claim 1, wherein the number of the temperature detection modules is equal to n times the number of the control sections, each of the control sections is provided with n temperature detection modules, and the temperature information is an average value of a plurality of temperatures detected by the plurality of temperature detection modules, where n is a natural number greater than 1.
4. The display panel of claim 1, wherein the control module receives and controls the brightness of all the light emitting units in the control partition according to the control signal.
5. The display panel of claim 1, wherein the control module receives the control signal and controls the number of the lighting units in the control section according to the control signal.
6. The display panel according to claim 5, wherein the ratio of the number of the light emitting units that are lit in each of the control sections to the total number of the light emitting units is 2/3 or more, and the unlit light emitting units are uniformly arranged.
7. The display panel according to claim 1, wherein a size of the control division area is 2 cm or more and 4 cm or less.
8. The display panel of claim 1, wherein the light emitting units are disposed on one surface of the light source pixel array substrate, and the temperature detection modules are disposed on the other surface of the light source pixel array substrate away from the light emitting units and respectively corresponding to the positions of the control partitions.
9. The display panel according to claim 1, wherein each of the light emitting units includes a red light emitting chip, a green light emitting chip, and a blue light emitting chip, each of which is individually controllable;
the preset reference temperature is 40 ℃.
10. A display device characterized in that it comprises a display panel according to any one of claims 1 to 9.
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| CN202222090611.2U CN218122974U (en) | 2022-08-09 | 2022-08-09 | Display panel and display device |
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| CN202222090611.2U CN218122974U (en) | 2022-08-09 | 2022-08-09 | Display panel and display device |
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