CN112365814B - Display device, display control method, and computer-readable storage medium - Google Patents
Display device, display control method, and computer-readable storage medium Download PDFInfo
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- CN112365814B CN112365814B CN202011317038.3A CN202011317038A CN112365814B CN 112365814 B CN112365814 B CN 112365814B CN 202011317038 A CN202011317038 A CN 202011317038A CN 112365814 B CN112365814 B CN 112365814B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a display device, a display control method and a computer readable storage medium, wherein the display device comprises: at least two groups of luminous groups, each luminous group comprises a plurality of LEDs, the BIN ranges of the LEDs of the same luminous group are the same, at least two driving integrated circuits are connected, and one driving integrated circuit is used for driving one luminous group. According to the invention, the driving currents output by the driving integrated circuits connected with different light-emitting groups are regulated, so that the light-emitting wavelengths of different light-emitting groups are regulated to be close to each other, and when LEDs in different BIN ranges are used in the same display device, good color uniformity is obtained, and the cost of production and sales links is reduced.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a display device, a display control method, and a computer readable storage medium.
Background
In an LED display, such as a miniLED display or a microLED display, in order to ensure chromaticity uniformity during display, the light emitting LEDs of the same LED display are usually in the same BIN range (the packaged LEDs can be classified according to parameters such as wavelength, light emitting intensity, light emitting angle, color temperature, working voltage, etc., the LEDs are classified into a plurality of grades and categories, then the LEDs are classified into different BINs according to settings, and the parameters of the LEDs in the same BIN range are kept to be highly consistent), otherwise, the LEDs cannot be corrected by a display control system in the later stage, but the LEDs of the same display are ensured to be in the same BIN range, and the cost of the LEDs is increased in the production and sales processes of the LEDs.
Disclosure of Invention
The invention mainly aims to provide a display device, and aims to solve the problem that the cost of LEDs in the production and sales processes is increased because LEDs of the same LED display are required to be in the same BIN range.
In order to achieve the above object, the present invention provides a display device including: at least two groups of luminous groups, each luminous group comprises a plurality of LEDs, the BIN ranges of the LEDs of the same luminous group are the same, at least two driving integrated circuits are connected, and one driving integrated circuit is used for driving one luminous group.
Further, the number of the light-emitting groups is even, the LEDs of any two light-emitting groups form a plurality of rows, and the LEDs of the two light-emitting groups of each row are arranged at intervals; or the number of the luminous groups is even, the LEDs of any two luminous groups form a plurality of columns, and the LEDs of the two luminous groups of each column are arranged at intervals.
Further, the number of the light emitting groups is 3 or an odd number above 3, the LEDs of the plurality of groups of light emitting groups form a plurality of rows, and adjacent LEDs in each row belong to different light emitting groups; or the number of the luminous groups is 3 or an odd number above 3, a plurality of groups of LEDs of the luminous groups form a plurality of columns, and adjacent LEDs in each column belong to different luminous groups.
Further, each of the light emitting groups is arranged in a plurality of rows or columns, and the light emitting groups of adjacent rows and/or adjacent columns belong to different BIN ranges.
Further, the color of the light emitted by the LEDs of the light emitting group is the same.
Further, the LEDs are miniLEDs or microLEDs.
In order to achieve the above object, the present invention also provides a display control method applied to the display device as described in any one of the above, the control method comprising the steps of:
acquiring the light-emitting wavelength of the light-emitting group under the same preset driving current;
and adjusting the driving current corresponding to the light-emitting groups according to the light-emitting wavelengths, so that the absolute value of the difference value of the light-emitting wavelengths of the LEDs of any two groups of light-emitting groups is smaller than a first preset value.
Further, when the light emitting groups are two groups, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength includes:
increasing the driving current of the light emitting group with longer wavelength; and/or
The drive current of the shorter wavelength light emitting group is reduced.
Further, when the light emitting groups are three or more, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength includes:
calculating an average value of the emission wavelengths based on the obtained emission wavelengths of each of the emission groups;
and adjusting the driving current of the corresponding light-emitting group according to the average value and the light-emitting wavelength, so that the absolute value of the difference between the light-emitting wavelength of the adjusted light-emitting group and the average value is smaller than a second preset value, and the second preset value is smaller than the first preset value.
Further, the step of adjusting the driving current of the corresponding light emitting group according to the average value and the light emitting wavelength so that the absolute value of the difference between the light emitting wavelength of the adjusted light emitting group and the average value is smaller than a second preset value includes:
increasing the drive current of the light-emitting group having a light-emitting wavelength greater than or equal to said average value, and/or
The drive current of the light emitting group having a light emission wavelength smaller than the average value is reduced.
In order to achieve the above object, the present invention also provides a display device including a memory, a processor, and a display control program stored on the memory and executable on the processor, the display control program implementing the steps of the display control method according to any one of the above when executed by the processor.
In order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a display control program which, when executed by a processor, implements the steps of the display control method according to any one of the above.
According to the display device and the display control method, at least two groups of light-emitting groups are arranged, the BIN ranges of the LEDs of the same light-emitting group are the same, the LEDs of the corresponding light-emitting groups are connected and driven in a one-to-one correspondence manner through the corresponding number of driving integrated circuits, and the light-emitting wavelengths of different light-emitting groups are adjusted by adjusting the driving currents output by the driving integrated circuits connected with different light-emitting groups, so that the light-emitting wavelengths of different light-emitting groups are close, good color uniformity is obtained when the LEDs of different BIN ranges are used in the same display device, and the cost of production and sales links is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of a device architecture of a hardware runtime environment in which embodiments of the present invention are implemented;
FIG. 7 is a flow chart of a display control method according to an embodiment of the invention;
fig. 8 is a flowchart illustrating an embodiment of the display control method in step S20.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention 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 embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1, a display device 100 according to the present invention is provided, where the display device 100 includes: at least two groups of light emitting groups, each light emitting group comprises a plurality of LEDs 10, the BIN ranges of the LEDs 10 of the same light emitting group are the same, at least two driving integrated circuits 20, and one driving integrated circuit 20 is connected and used for driving one light emitting group.
In this embodiment, the LEDs 10 are minileds or microleds, and the display device 100 may further include a carrier board for laying the LEDs 10, where the LEDs 10 are generally arranged in an array on the carrier board, and wires for connecting each of the LEDs 10 and the corresponding driving integrated circuits 20 may be further disposed on the carrier board.
In this embodiment, the display device 100 includes at least two light emitting groups, that is, the display device 100 includes two or more light emitting groups, each light emitting group includes a plurality of LEDs 10, the BIN ranges of the plurality of LEDs 10 in the same group are the same, the BIN ranges of the LEDs 10 in different groups are different, hereinafter, the display device 100 includes two light emitting groups, that is, a light emitting group a and a light emitting group B, and the BIN ranges of the LEDs 10 in the light emitting group a and the light emitting group B are different, for example, each light emitting group includes a plurality of LEDs 10, for example, the light emitting group a includes a plurality of LEDs a, and the LEDs a are in the same BIN range a; the light emitting group B comprises a plurality of LEDB, wherein a plurality of LEDB are in the same BIN range B, and the BIN range A is different from the BIN range B.
In this embodiment, the number of the driving integrated circuits 20 corresponds to the number of the light emitting groups, and two or more driving integrated circuits 20, that is, a driving integrated circuit a and a driving integrated circuit B are taken as an example for the display device 100, where each driving integrated circuit 20 is connected to and drives a plurality of LEDs 10 in one light emitting group, for example, the driving integrated circuit a is connected to and drives a plurality of LEDs a in the light emitting group a, and the driving integrated circuit B is connected to and drives a plurality of LEDs B in the light emitting group B.
In this embodiment, the same driving current may be input to the light emitting group a and the light emitting group B through the driving integrated circuit a and the driving integrated circuit B, so as to obtain the light emitting wavelength λa of the light emitting group a and the light emitting group B at the same driving current, and since the BIN ranges where the light emitting group a and the light emitting group B are located are different, the light emitting wavelength λa and the light emitting wavelength λb are also different, and at this time, it is assumed that λa > λb, according to the relationship between the light emitting wavelength of the LED10 and the driving current: that is, the larger the driving current of the LED10 is, the smaller the emission wavelength of the LED10 is. By increasing the driving current IA of the driving integrated circuit a connected to the light emitting group a and/or decreasing the driving current IB of the driving integrated circuit B connected to the light emitting group B, so that IA > IB, and finally, the light emitting wavelength λa is decreased and/or the light emitting wavelength λb is increased, thereby decreasing the wavelength gap between the light emitting wavelength λa and the light emitting wavelength λb, according to experiments, when the difference between the light emitting wavelengths of different LEDs 10 is less than or equal to 2nm, the obvious color difference is not perceived by human eyes, when the difference is greater than 2nm, the obvious color difference between different LEDs 10 can be observed by human eyes, and by adjusting the driving current of the driving integrated circuit a and/or the driving integrated circuit B, the absolute value of the difference between the light emitting wavelength λa of the light emitting group a and the light emitting wavelength λb of the light emitting group B is less than a preset value, such as 2nm, thereby, the same display device 100 can realize good color uniformity and reduced cost in sales links when using LEDs 10 in different BIN ranges.
For example, assuming that the emission wavelength λa=540 nm of the emission group a and the emission wavelength λb=537 nm of the emission group B are measured by driving the emission group a and the emission group B with the same driving current I0, such as 1.5mA, the absolute value of the difference between the emission wavelength λa=537 nm and the emission wavelength λb=538 nm is greater than 2nm, and a human eye can observe a clear color difference between the led a and the led B, the present embodiment increases the driving current IA of the driving integrated circuit a connected to the emission group a so that IA is increased to 1.6mA, and/or decreases the driving current IB of the driving integrated circuit B connected to the emission group B so that IB is decreased to 1.4mA so that IA > IB, at this time, the emission wavelength λa=539 nm of the emission group a and the emission wavelength λb=538 nm are smaller than or equal to 2nm, thereby achieving good color uniformity.
It can be understood that when the number of the light emitting groups is three or more, the light emitting wavelengths of the different light emitting groups can be adjusted by the above principle, so that the absolute value of the difference value of the light emitting wavelengths between any two light emitting groups is smaller than a preset value, such as within 2nm, and good color uniformity can be realized.
In summary, in this embodiment, at least two light emitting groups are disposed, and the BIN ranges where the LEDs 10 of the same light emitting group are located are the same, the LEDs 10 of the corresponding light emitting group are connected and driven in a one-to-one correspondence by the corresponding number of driving integrated circuits 20, and the driving currents output by the driving integrated circuits 20 connected with different light emitting groups are adjusted, so that the light emitting wavelengths of different light emitting groups are close, the absolute value of the difference between the light emitting wavelengths of any two light emitting groups is smaller than the preset value, so as to obtain good color uniformity, and reduce the cost of production and sales links.
Referring to fig. 1-2, further, the number of the light emitting groups is even, the LEDs 10 of any two light emitting groups form a plurality of rows, and the LEDs 10 of the two light emitting groups in each row are arranged at intervals; or the number of the light emitting groups is even, the LEDs 10 of any two light emitting groups form a plurality of columns, and the LEDs 10 of the two light emitting groups of each column are arranged at intervals.
In this embodiment, as shown in fig. 2, the number of the light emitting groups is even (two groups of light emitting groups are illustrated in fig. 2 as an example), the LEDs 10 of any two light emitting groups form a plurality of rows, and the LEDs 10 of the two light emitting groups in each row are arranged at intervals, so that the LEDs a and the LEDs b in different BIN ranges are dispersed and uniformly distributed, and better color uniformity can be obtained compared with the case that a plurality of LEDs a are arranged in the same area in a concentrated manner and a plurality of the same LEDs b are arranged in the same area in a concentrated manner.
Alternatively, as shown in fig. 1, the number of the light emitting groups is even (two groups of light emitting groups are illustrated in fig. 1 as an example), the LEDs 10 of any two light emitting groups form a plurality of columns, and the LEDs 10 of the two light emitting groups in each column are arranged at intervals, so that the LEDs a and the LEDs b in different BIN ranges are distributed in a dispersed and uniform manner, and better color uniformity can be obtained compared with the case that a plurality of LEDs a are arranged in a concentrated manner in the same region and a plurality of LEDs b are arranged in a concentrated manner in the same region.
Referring to fig. 3, further, each of the light emitting groups is arranged in a plurality of rows or columns, and the light emitting groups of adjacent rows and/or adjacent columns belong to different BIN ranges.
In this embodiment, as shown in fig. 3, the LEDs 10 of any two of the light emitting groups form a plurality of columns and form a plurality of rows, the LEDs 10 of the two light emitting groups of each column are arranged at intervals, and the LEDs 10 of the two light emitting groups of each row are arranged at intervals, that is, all adjacent to the LEDA are LEDB, all adjacent to the LEDB are LEDA, so that the plurality of LEDA and LEDB are arranged in a plurality of columns compared with the plurality of LEDA and LEDB arranged in a plurality of rows in fig. 1, the LEDA and LEDB are more dispersed and more uniform, and better color uniformity can be further obtained.
Referring to fig. 4-5, further, the number of the light emitting groups is an odd number of 3 or more, the LEDs 10 of the light emitting groups form a plurality of rows, and the adjacent LEDs 10 in each row belong to different light emitting groups; or the number of the light emitting groups is 3 or an odd number above 3, a plurality of groups of LEDs 10 of the light emitting groups form a plurality of columns, and adjacent LEDs 10 in each column belong to different light emitting groups.
In this embodiment, as shown in fig. 5, the number of the light emitting groups is odd (taking three groups of the light emitting groups in fig. 5 as an example for illustration), the LEDs 10 of the three groups of the light emitting groups form a plurality of rows, and the adjacent LEDs 10 in each row belong to different light emitting groups, so that the LEDs a, LEDs b and LEDs c in different BIN ranges are dispersed and uniformly distributed, and better color uniformity can be obtained compared with the case that a plurality of LEDs a are intensively arranged in the same area, a plurality of LEDs b are intensively arranged in the same area, and a plurality of LEDs c are intensively arranged in the same area.
Alternatively, as shown in fig. 4, the number of the light emitting groups is odd (taking three groups of the light emitting groups in fig. 4 as an example for illustration), the LEDs 10 of the three groups of the light emitting groups form a plurality of columns, and the adjacent LEDs 10 in each column belong to different light emitting groups, so that the LEDs a, LEDs b and LEDs c in different BIN ranges are dispersed and uniformly distributed, and better color uniformity can be obtained than the case that a plurality of LEDs a are intensively arranged in the same region, a plurality of LEDs b are intensively arranged in the same region, and a plurality of LEDs c are intensively arranged in the same region.
Further, the color of the light emitted by the several LEDs 10 of the light emitting group is the same.
In this embodiment, the colors of the light emitted by the LEDs 10 of different light emitting groups are the same under the same driving current, so, on the hardware level, the absolute value of the difference of the light emitting wavelengths of the LEDs 10 of different groups can be smaller than the preset value by fine tuning the driving current of different light emitting groups, on the basis, the driving current of different light emitting groups can be further adjusted by a software algorithm, so that the LEDs 10 emit light of three primary colors, such as red, green and blue, to form pixels, and a display screen is formed by a plurality of pixels. Thus, the calibration of the color uniformity is performed on the hardware level for the LEDs 10 of different BIN ranges.
As shown in fig. 6, fig. 6 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention. The terminal in the embodiment of the invention is a display device 100. As shown in fig. 1, the display device 100 may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), a remote controller, and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface; the memory 1005 may include a non-volatile flash memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the structure of the terminal shown in fig. 1 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a display control program may be included in a memory 1005, which is a type of computer-readable storage medium.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a display control program stored in the memory 1005 and perform the following operations:
acquiring the light-emitting wavelength of the light-emitting group under the same preset driving current;
and adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelengths so that the absolute value of the difference value of the light emitting wavelengths of the LEDs 10 of any two groups of the light emitting groups is smaller than a first preset value.
Referring to fig. 1 and 7, the present invention further provides a display control method applied to the display device 100 described above, in embodiment 1, the control method includes the following steps:
step S10, obtaining the light-emitting wavelength of the light-emitting group under the same preset driving current;
step S20, adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelengths, so that the absolute value of the difference between the light emitting wavelengths of the LEDs 10 of any two groups of light emitting groups is smaller than a first preset value.
In this embodiment, taking the display device 100 shown in fig. 1 as an example including two light-emitting groups, that is, the light-emitting group a and the light-emitting group B, the same preset driving current is input to the light-emitting group a and the light-emitting group B through the driving integrated circuit a and the driving integrated circuit B, respectively, so as to obtain the light-emitting wavelength λa of the light-emitting group a and the light-emitting group B, and since the BIN ranges where the light-emitting group a and the light-emitting group B are located are different, the light-emitting wavelength λa and the light-emitting wavelength λb are also different, and it is assumed that λa > λb.
According to the relation between the emission wavelength and the driving current of the LED 10: that is, the larger the driving current of the LED10 is, the smaller the emission wavelength of the LED10 is. By increasing the drive current IA of the drive integrated circuit a connected to the light-emitting group a and/or decreasing the drive current IB of the drive integrated circuit B connected to the light-emitting group B, so that IA > IB, finally, the light-emitting wavelength λa is decreased and/or the light-emitting wavelength λb is increased, thereby decreasing the wavelength gap between the light-emitting wavelength λa and the light-emitting wavelength λb, experiments show that the difference between the light-emitting wavelengths of the different LEDs 10 is less than or equal to 2nm, no obvious color difference is perceived by the human eye, when the difference exceeds 2nm, the obvious color difference between the different LEDs 10 can be observed by the human eye, and therefore, by adjusting the drive current of the drive integrated circuit a and/or the drive integrated circuit B, the absolute value of the difference between the light-emitting wavelength λa of the light-emitting group a and the light-emitting wavelength λb is less than or equal to a first preset value, such as 2nm, thereby achieving good color uniformity and reduced cost in sales when the LEDs 10 are used in different BIN ranges.
For example, assuming that when the light emitting group a and the light emitting group B are driven at the same driving current I0, such as 1.5mA, the light emitting wavelength λa=540 nm of the light emitting group a is measured, the light emitting wavelength λb=537 nm of the light emitting group B is larger than 2nm in absolute value, a human eye can observe a significant color difference between the led a and the led B, by increasing the driving current IA of the driving integrated circuit a connected to the light emitting group a so that IA is increased to 1.6mA, and/or decreasing the driving current IB of the driving integrated circuit B connected to the light emitting group B so that IB is reduced to 1.4mA so that IA > IB, at this time, the light emitting wavelength λa=539 nm of the light emitting group a, and the light emitting wavelength λb=538 nm are smaller than or equal to a first preset value, such as 2nm, thereby achieving good color uniformity. It will be appreciated that when λa < λb, IA < IB is adjusted such that the absolute value of the difference in the emission wavelengths λa of emission group a and the emission wavelengths λb of emission group B is less than or equal to a first preset value, such as 2nm.
When the number of the light-emitting groups is three or more, the light-emitting wavelengths of the different light-emitting groups can be adjusted by the adjustment mode, so that the absolute value of the difference value of the light-emitting wavelengths between any two light-emitting groups is smaller than or equal to a first preset value, such as 2nm, and good color uniformity can be realized.
Further, when the light emitting groups are two groups, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength includes:
step S21, increasing the driving current of the light-emitting group with longer wavelength; and/or
Step S22, the driving current of the light emitting group with shorter wavelength is reduced.
In the present embodiment, based on embodiment 1 of the above-described display control method, in embodiment 2, according to the relationship between the emission wavelength of the LED10 and the driving current: that is, the larger the driving current of the LED10 is, the smaller the emission wavelength of the LED10 is. Since the light emission wavelength λa of the light emission group a is longer and the light emission wavelength λb of the light emission group B is shorter, the driving current I of the driving integrated circuit a connected to the light emission group a is increased A And/or reducing the driving current I of the driving integrated circuit B connected with the light emitting group B B So that I A >I B Finally, the light-emitting wavelength λa is reduced and/or the light-emitting wavelength λb is increased, so that a wavelength difference between the light-emitting wavelength λa and the light-emitting wavelength λb is reduced, and the absolute value of the difference between the light-emitting wavelength λa of the light-emitting group a and the light-emitting wavelength λb of the light-emitting group B is less than or equal to a first preset value, such as 2nm.
Referring to fig. 8, further, when the light emitting groups are three or more, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength includes:
step S23, calculating the average value of the light emitting wavelength based on the acquired light emitting wavelength of each light emitting group;
step S24, adjusting the driving current of the corresponding light-emitting group according to the average value and the light-emitting wavelength, so that the absolute value of the difference between the light-emitting wavelength of the adjusted light-emitting group and the average value is smaller than a second preset value, wherein the second preset value is smaller than the first preset value.
In this embodiment, based on embodiment 1 of the above display control method, in embodiment 3, when the number of the light emitting groups is 3 or more, the average value λ of the light emitting wavelengths of the different light emitting groups is obtained at the same preset driving current 0 And adjusting the driving current of the driving integrated circuit 20 corresponding to the light emitting group according to the average value and the light emitting wavelength, wherein the specific adjustment mode is as follows: if the wavelength of the light emitted by one of the light emitting groups is greater than or equal to the average value lambda 0 The driving current of the driving integrated circuit 20 corresponding to the light emitting group is increased to reduce the light emitting wavelength of the light emitting group so that the light emitting wavelength of the light emitting group is equal to the average value lambda 0 The absolute value of the difference is smaller than the second preset value, such as 1nm, otherwise, the luminous wavelength of one luminous group is smaller than the average value lambda 0 The driving current of the driving integrated circuit 20 corresponding to the light emitting group is reduced to increase the light emitting wavelength of the light emitting group so that the light emitting wavelength of the light emitting group is equal to the average value lambda 0 The absolute value of the difference is smaller than the second preset value, such as 1nm, and in summary, the direction of the driving current is adjusted to be such thatThe adjusted light-emitting wavelength of the light-emitting group approaches the average value lambda 0 Thereby achieving good color uniformity. In this embodiment, the second preset threshold is smaller than the first preset threshold, so that when the number of the light emitting groups is 3 or more, the difference of the light emitting wavelengths between the adjusted different light emitting groups is further reduced, so that the color uniformity is further improved.
Further, the step of adjusting the driving current of the corresponding light emitting group according to the average value and the light emitting wavelength so that the absolute value of the difference between the light emitting wavelength of the adjusted light emitting group and the average value is smaller than a second preset value includes:
step S241 of increasing the driving current of the light emitting group having the light emitting wavelength greater than or equal to the average value, and/or
Step S242, reducing the driving current of the light emitting group having the light emitting wavelength smaller than the average value.
In this embodiment, based on embodiment 3 of the above display control method, in embodiment 4, in 3 or more light emitting groups, if the light emitting wavelengths of some light emitting groups are greater than or equal to the average value, the driving currents of the driving integrated circuits 20 correspondingly connected to the light emitting groups are increased to reduce the light emitting wavelengths of the light emitting groups, so that the absolute value of the difference between the light emitting wavelengths of the light emitting groups and the average value is smaller than a second preset value, such as 1nm, to obtain good color uniformity, and reduce the cost of production and sales links; and the light emitting wavelengths of the other light emitting groups are smaller than the average value, the driving current of the driving integrated circuit 20 corresponding to the light emitting groups is reduced, so that the light emitting wavelengths of the light emitting groups are increased, the absolute value of the difference between the light emitting wavelengths of the light emitting groups and the average value is smaller than a second preset value, such as 1nm, so that good color uniformity is obtained, and the cost of production and sales links is reduced.
In summary, in the display device 100 and the display control method of the present invention, at least two light emitting groups are disposed, and the BIN ranges of the LEDs 10 of the same light emitting group are the same, the LEDs 10 of the corresponding light emitting group are connected and driven in a one-to-one correspondence manner by the corresponding number of driving integrated circuits 20, and the driving currents output by the driving integrated circuits 20 connected to different light emitting groups are adjusted, so that the light emitting wavelengths of different light emitting groups are adjusted to be close to each other, thereby obtaining good color uniformity when the LEDs 10 of different BIN ranges are used in the same display device 100, and reducing the cost of production and sales links.
In order to achieve the above object, the present invention further provides a display device 100, where the display device 100 includes a memory, a processor, and a display control program stored in the memory and executable on the processor, and the display control program when executed by the processor implements the steps of the display control method as described above.
In order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a display control program which, when executed by a processor, implements the steps of the control method of the display apparatus 100 as described above.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (5)
1. A display device, characterized in that the display device comprises:
at least two groups of luminous groups, each luminous group comprises a plurality of LEDs, the BIN ranges of the LEDs of the same luminous group are the same,
at least two driving integrated circuits, one of which is connected with and used for driving one of the light emitting groups;
each light emitting group is arranged into a plurality of rows or a plurality of columns, and LEDs of the light emitting groups of adjacent rows and/or adjacent columns belong to different BIN ranges;
the LEDs are miniLEDs or microLEDs;
the control method of the display device comprises the following steps: acquiring the light-emitting wavelength of the light-emitting group under the same preset driving current; adjusting the driving current corresponding to the light-emitting groups according to the light-emitting wavelengths, so that the absolute value of the difference value of the light-emitting wavelengths of the LEDs of any two groups of light-emitting groups is smaller than a first preset value;
when the light emitting groups are two groups, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength comprises the following steps: increasing the driving current of the light emitting group with longer wavelength; reducing the driving current of the light emitting group with shorter wavelength;
when the light emitting groups are three groups or more, the step of adjusting the driving current corresponding to the light emitting groups according to the light emitting wavelength comprises the following steps: calculating an average value of the emission wavelengths based on the obtained emission wavelengths of each of the emission groups; and adjusting the driving current of the corresponding light-emitting group according to the average value and the light-emitting wavelength, so that the absolute value of the difference between the light-emitting wavelength of the adjusted light-emitting group and the average value is smaller than a second preset value, and the second preset value is smaller than the first preset value.
2. The display device according to claim 1, wherein the number of the light emitting groups is an even number, LEDs of any two of the light emitting groups form a plurality of rows, and LEDs of two light emitting groups of each row are arranged at intervals; or alternatively
The number of the luminous groups is even, LEDs of any two luminous groups form a plurality of columns, and LEDs of the two luminous groups of each column are arranged at intervals.
3. The display device of claim 1, wherein,
the number of the luminous groups is 3 or an odd number above 3, a plurality of groups of LEDs of the luminous groups form a plurality of rows, and adjacent LEDs in each row belong to different luminous groups; or alternatively
The number of the luminous groups is 3 or an odd number above 3, a plurality of groups of LEDs of the luminous groups form a plurality of columns, and adjacent LEDs in each column belong to different luminous groups.
4. The display device of claim 1, wherein the color of light emitted by the plurality of LEDs of the light emitting group is the same.
5. The display device according to claim 1, wherein the step of adjusting the driving current of the corresponding light emitting group according to the average value and the light emitting wavelength so that the absolute value of the difference between the light emitting wavelength of the adjusted light emitting group and the average value is smaller than a second preset value comprises:
increasing the drive current of the light-emitting group having a light-emitting wavelength greater than or equal to said average value, and/or
The drive current of the light emitting group having a light emission wavelength smaller than the average value is reduced.
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