CN118280275B - Display screen and correction method thereof - Google Patents
Display screen and correction method thereof Download PDFInfo
- Publication number
- CN118280275B CN118280275B CN202410677978.5A CN202410677978A CN118280275B CN 118280275 B CN118280275 B CN 118280275B CN 202410677978 A CN202410677978 A CN 202410677978A CN 118280275 B CN118280275 B CN 118280275B
- Authority
- CN
- China
- Prior art keywords
- light emitting
- light
- display screen
- value
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012937 correction Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 9
- 230000004075 alteration Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 241001465382 Physalis alkekengi Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002060 circadian Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a display screen and a correction method thereof, wherein the display screen comprises: the invention proposes a display screen comprising: the circuit board and at least two light emitting units, each light emitting unit is connected electrically in proper order and the interval sets up on the circuit board, and each light emitting unit all includes drive piece and the light emitting chip of interval setting in deviating from circuit board one side, and the week side of each drive piece all is equipped with only light emitting chip, and the week side of each light emitting chip all is equipped with only drive piece. The periphery side of the driving piece is not provided with other driving pieces, the periphery side of the light emitting chip is not provided with other light emitting chips, each driving piece and the light emitting chip are guaranteed to be discontinuously arranged on the same extension line all the time, then the arrangement directions of two adjacent driving pieces or light emitting chips are different, the same color of users watching from different visual angles is guaranteed, and chromatic aberration is eliminated. For the embodiment that a plurality of display screens are connected in proper order, the drive piece and the luminous chip that the direction of arranging crisscross setting for the colour difference between a plurality of display screens also is eliminated.
Description
Technical Field
The invention belongs to the technical field of display devices, and particularly relates to a display screen and a correction method thereof.
Background
At present, the LED display screen with integrated lamp driving in the market is characterized in that the LED is arranged in the same direction, and LED light emitting chips face the same direction, so that the colors of all visual angles of the LED display screen and the colors of the spliced plates are greatly different.
The same be decorated with lanterns-driven integrated LED display screen has different colors from different visual angles due to the difference of the positions of the three LED RGB light-emitting chips, and the color of the left row can be obviously different from the color of the right row by photographing the contrast color. When two be decorated with lanterns drive the LED display screen of an organic whole to piece together about, or up and down to piece together, because the lamp plate can rotate 180 degrees when piece together, lead to two be decorated with lanterns to drive the LED RGB light emitting chip of an organic whole LED display screen and be in the direction that is exactly opposite, and then to piece together two be decorated with lanterns to drive the colour of an organic whole LED display screen and be different completely.
Disclosure of Invention
The invention aims to provide a display screen and a correction method thereof, which aim to solve the problem that display colors of different visual angles are different.
In order to solve the technical problems, the present invention is implemented as follows, a display screen, including: the circuit board and at least two light emitting units, each light emitting unit is connected electrically in proper order and is arranged on the circuit board at intervals, each light emitting unit all includes that the interval sets up deviating from driving piece and the light emitting chip of circuit board one side, each the week side of driving piece all is equipped with only the light emitting chip, each the week side of light emitting chip all is equipped with only the driving piece.
In some embodiments of the present invention, each of the light emitting units is arranged along an array structure, the number of the light emitting units in the same row is even, and the arrangement directions of the light emitting chips and the driving members in two adjacent light emitting units are opposite.
In some embodiments of the present invention, the display screen further includes a display circuit, where the display circuit includes an input module connected to the display screen, a power supply, and a ground, each of the light emitting units includes an input port, a ground port, and a ground port, one of the input ports is electrically connected to the input module, each of the ground ports is electrically connected to the ground, and each of the ground ports is electrically connected to the power supply.
In some embodiments of the present invention, each of the light emitting units further includes an output port, and the output port of one of the two adjacent light emitting units is electrically connected to the input port of the other.
In some embodiments of the present invention, each of the light emitting units further includes a normally closed contact electrically connected to the input port, and the normally closed contact of one of the two adjacent light emitting units is electrically connected to the input port of the other.
In some embodiments of the present invention, the display circuit further includes a standby input module connected to the display screen, each of the light emitting units further includes a standby input port and an output port, one of the standby input ports is electrically connected to the standby input module, the input port of one of the two adjacent light emitting units is electrically connected to the standby input port of the other one, and the output port of one of the two adjacent light emitting units is electrically connected to the input port of the other one.
The invention also provides a correction method which is applied to the display screen, and comprises the following steps:
Adjusting the display screen to enter a standard color mode;
Acquiring coordinate data of each light-emitting unit on the display screen, and acquiring a display color output value of each light-emitting unit according to the coordinate data;
Screening the light-emitting units with error coefficients of the display color output value and the initial color output value larger than preset coefficients;
judging whether the working time of the screened light-emitting units is less than a preset time;
if the working time is smaller than the preset time, calculating a correction coefficient through the display color output value and the standard color output value;
Transmitting the correction coefficient to a database of a display screen, and adjusting an input signal of a corresponding light emitting unit.
In some embodiments of the present invention, the step of determining whether the operating time of the light emitting unit satisfying the condition is less than a preset time further includes:
And if the working time is longer than the preset time, replacing the corresponding light-emitting unit.
In some embodiments of the present invention, the step of determining whether an error coefficient between the display color output value and the initial color output value of each of the light emitting units is greater than a preset coefficient further includes:
The error coefficient is a determinant of a matrix 3*3, and the calculation formula of the matrix is as follows:
wherein R1, G1 and B1 are color component values of each channel of the display color output value, R0, G0 and B0 are color component values of each channel of the initial color output value, and the error coefficient is Is a standard value of (c).
In some embodiments of the present invention, the display color output value includes a red component value, a green component value, and a blue component value, the correction values include a red correction value, a green correction value, and a blue correction value, and the step of calculating the correction value of the display color output value includes:
The calculation formula is that ：Icr(x)=Ir(x)+β(Iavg-Ir(x))Wr(x),Wr(x)=αrgIg(x)+αrbIb(x);
Icg(x)=Ig(x)+β(Iavg-Ig(x))Wg(x),Wg(x)=αgrIr(x)+αgbIb(x);
Icb(x)=Ib(x)+β(Iavg-Ib(x))Wb(x),Wb(x)=αbrIb(x)+αbgIg(x);
Wherein I cr(x)、Icg(x)、Icb (x) is a red correction value, a green correction value, and a blue correction value at x, I r(x)、Ig(x)、Ib (x) is a red component value, a green component value, and a blue component value at x, I avg is an average value of all channels at x, I avg=(Ir(x)+Ig(x)+Ib (x))/3, β is a correction coefficient, W r(x)、Wg(x)、Wb (x) is a compensation weight of red, green, and blue channels at x=respectively, α rg、αrb、αgr、αgb、αbr、αbg is a coefficient in a weight function for realizing component value balance among the channels.
Compared with the prior art, the display screen and the correction method thereof have the beneficial effects that:
The light-emitting chip is used for transmitting the color output value to the driving piece, and the light-emitting of different colors of the driving piece is realized through the color output value in the light-emitting chip. The periphery side of the driving piece is not provided with other driving pieces, the periphery side of the light emitting chip is not provided with other light emitting chips, each driving piece and the light emitting chip are guaranteed to be discontinuously arranged on the same extension line all the time, then the arrangement directions of two adjacent driving pieces or light emitting chips are different, the same color of users watching from different visual angles is guaranteed, and chromatic aberration is eliminated. For the embodiment that a plurality of display screens connect gradually, drive piece and the luminescence chip that the direction of arranging crisscross setting for the colour difference between a plurality of display screens also is eliminated, in order to guarantee best viewing experience.
Drawings
FIG. 1 is a schematic top view of a display screen according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a display screen according to an embodiment of the invention;
FIG. 3 is a schematic circuit diagram of the display screen of FIG. 2;
fig. 4 is an enlarged view of detail A1 in fig. 3;
FIG. 5 is a schematic top view of a display screen according to another embodiment of the present invention;
FIG. 6 is a schematic circuit diagram of the display screen of FIG. 5;
fig. 7 is an enlarged view of detail A2 in fig. 6;
FIG. 8 is a schematic top view of a display screen according to another embodiment of the present invention;
FIG. 9 is a schematic circuit diagram of the display screen of FIG. 8;
Fig. 10 is an enlarged view of detail A3 in fig. 9;
FIG. 11 is a schematic top view of a display screen according to another embodiment of the present invention;
Fig. 12 is a flowchart of a method for calibrating a display screen according to an embodiment of the invention.
In the drawings, each reference numeral denotes:
100. A display screen; 11. a light emitting unit; 111. a driving member; 112. a light emitting chip; 12. an input module; 121. an input port; 122. an output port; 123. a normally closed contact; 13. a power supply; 131. an electrical connection port; 14. a ground wire; 141. a ground port; 15. a standby input module; 151. a spare input port.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, the present invention proposes a display 100, including: the circuit board and at least two light emitting units 11, each light emitting unit 11 is connected electrically in proper order and the interval sets up on the circuit board, and each light emitting unit 11 all includes drive piece 111 and the light emitting chip 112 of interval setting in deviating from circuit board one side, and the week side of each drive piece 111 all is equipped with only light emitting chip 112, and the week side of each light emitting chip 112 all is equipped with only drive piece 111.
The driving member 111 is used for transmitting an electrical signal to the light emitting chip 112, and the color light of the light emitting chip 112 has different color output values so as to realize light emission of different colors. The periphery of the driving piece 111 is not provided with other driving pieces 111, the periphery of the light emitting chip 112 is not provided with other light emitting chips 112, each driving piece 111 and the light emitting chip 112 are ensured to be discontinuously arranged on the same extension line all the time, then the arrangement directions of two adjacent driving pieces 111 or light emitting chips 112 are different, the same color of a user looking from different visual angles is ensured, and chromatic aberration is eliminated. For the embodiment in which the plurality of display screens 100 are sequentially connected, the driving parts 111 and the light emitting chips 112 are arranged in staggered directions, so that chromatic aberration between the plurality of display screens 100 is also eliminated to maintain the optimal viewing experience.
Since the driving piece 111 and the light emitting chip 112 of each light emitting unit 11 are disposed at intervals, and only the light emitting chip 112 is provided on the peripheral side of each driving piece 111, such a layout is advantageous in achieving uniform light distribution. And the signal of the driving part 111 is directly transmitted to the adjacent light emitting chips 112, so that the loss and overlapping of the light signals can be reduced, thereby improving the brightness uniformity and visual effect of the entire display screen 100.
Meanwhile, since each light emitting unit 11 is relatively independent and is electrically connected to the circuit board in turn, such a design facilitates the configuration and the subsequent maintenance work of the display screen 100. If a problem occurs in a certain lighting unit 11, it can be more conveniently overhauled or replaced without affecting the normal operation of other units.
In the present embodiment, the light emitting units 11 are arranged along the array structure, the number of the light emitting units 11 in the same row is even, and the arrangement directions of the light emitting chips 112 and the driving members 111 in the two adjacent light emitting units 11 are opposite. The shape of the display screen 100 is rectangular, the plurality of light emitting units 11 of the display screen 100 are arranged according to an array structure to form a plurality of rows and a plurality of columns, and the arrangement directions of two adjacent light emitting chips 112 in the same row are different, namely, the arrangement directions of the light emitting chips 112 in the same row are staggered, and the variation of the different arrangement directions is beneficial to providing balanced brightness and color in the horizontal and vertical directions, so that a viewer can obtain relatively consistent visual experience no matter from which angle views the screen, and chromatic aberration of the display screen 100 under different viewing angles is eliminated. Moreover, the alternating arrangement of the light emitting chips 112 enables better separation of pixels, which helps to improve the contrast and sharpness of the display 100. This arrangement is particularly advantageous when displaying fine text and detailed images.
For the use scene of at least two display screens 100, each light emitting unit 11 is continuously arranged along the same column of the array structure, and even number of light emitting units 11 is favorable for keeping the arrangement directions of the light emitting chips 112 in two light emitting units 11 connected with one display screen 100 and the other display screen 100 opposite, so that the colors of the plurality of display screens 100 are kept balanced, and the chromatic aberration is eliminated.
The arrangement directions of the light emitting chips 112 in the light emitting units 11 in the same column may be the same, contributing to better light management and optical performance. For example, in some applications, this arrangement may assist in focusing or diffusing light to accommodate different viewing needs.
Referring to fig. 2 and 11, in the present embodiment, the display screen 100 further includes a display circuit, the display circuit includes an input module 12 connected to the display screen 100, a power supply 13, and a ground line 14, each light emitting unit 11 includes an input port 121, a ground port 141, and a ground port 131, one input port 121 is electrically connected to the input module 12, each ground port 141 is electrically connected to the ground line 14, and each ground port 131 is electrically connected to the power supply 13.
The input module 12, the power supply 13 and the ground line 14 are all disposed on one side of the display screen 100, wherein the input module 12 is responsible for receiving image data or control commands from an external signal source and transmitting these signals to the light emitting unit 11 on the display screen 100. Thereby ensuring that an external signal is accurately transmitted to each light emitting unit 11 so that the display screen 100 can accurately present video or picture contents. The power supply 13 supplies necessary voltage and current to the light emitting unit 11 so that the light emitting chip 112 can emit light normally. The stabilized power supply 13 can ensure stable light emission of the light emitting unit 11, prevent screen flickering or color distortion due to instability of the power supply 13, and thus provide a better viewing experience. The ground line 14 is a load end of the circuit, and is used for stabilizing the voltage of the circuit, and can also be used as a safety protection to avoid damaging the light emitting unit 11 due to overvoltage or short circuit, thereby providing a stable working environment and ensuring the stability and reliability of the display screen 100.
The input port 121 directly receives the signal from the input module 12, ensuring a fast signal propagation speed and a fast response of the display 100. The stable power supply 13 ensures a constant and uniform light output, improves the quality of the picture, and in particular ensures uniformity of color and uniformity of brightness. Each light emitting unit 11 can receive signals and power independently, which allows precise control of each pixel on the screen, thereby supporting a complicated display effect and high resolution. The ground port 141 provides a protective function, reducing the risk of failure, enhancing the stability and lifetime of the display screen 100. Due to the direct electrical connection between the display circuit and the light emitting unit 11, if a certain unit has a problem, the related module can be conveniently detected and replaced, thereby facilitating maintenance of the display screen 100.
Referring to fig. 3 and 4, in an embodiment, each light emitting unit 11 further includes an output port 122, and the output port 122 of one of the two adjacent light emitting units 11 is electrically connected to the input port 121 of the other light emitting unit, so as to form a single-line zero-return code line. By connecting the output port 122 of each light emitting unit 11 to the input port 121 of an adjacent unit, a chained data transmission path can be established. Such a design simplifies the connection between the units, and the signal transmission paths of the entire display 100 are distributed in a chain shape, providing a more concise and efficient data transmission manner.
The direct connection between adjacent light emitting units 11 reduces the complex wiring and control circuit design requirements, and also facilitates a more compact layout in a limited space, which helps reduce the volume and weight of the entire display 100. Moreover, since signals can be transferred from one unit to the next, developers can design the shape and size of the display screen 100 more flexibly, helping to cope with different customization needs.
The power supply 13 may sequentially supply power to the series of light emitting units 11 one by one through the input port 121, which may help to achieve uniform power distribution, prevent local overheating, and improve the life and reliability of the light emitting units 11.
The connection mode supports modular design, can increase or decrease the size of a screen according to the needs, and is beneficial to meeting application requirements of different scales. And the problematic lighting units 11 can be easily removed from the chain and replaced without having to rewire or modify other parts of the circuit board. This reduces not only the maintenance effort but also the maintenance costs.
Referring to fig. 5 to 7, in an embodiment, each light emitting unit 11 further includes a normally-closed contact 123 electrically connected to the input port 121, and the normally-closed contact 123 of one of the two adjacent light emitting units 11 is electrically connected to the other input port 121, thereby forming a parallel circuit. This circuit design allows for a high degree of modularity of the display screen 100, facilitating the individual replacement or maintenance of each lighting unit 11 without fear of affecting the operation of the overall display system. This structure allows the single or multiple light emitting units 11 to be easily and conveniently maintained and replaced without affecting other parts, increasing flexibility in layout and maintenance of the display screen 100.
Since the normally closed contact 123 is normally closed, it can ensure stable signal transmission to each connected light emitting unit 11. Such a configuration improves the stability and reliability of the overall display system, with the contacts being opened only when an abnormal condition is detected. Preventing excessive current from passing through may damage the light emitting unit 11, reducing damage caused by accidents. When a problem occurs in a certain light emitting unit 11 or related circuit, the position of the fault can be more easily determined by the normally closed contact 123. The point-to-point connection is convenient for rapidly positioning and diagnosing errors, and reduces maintenance time.
Referring to fig. 8 to 10, in an embodiment, the display circuit further includes a standby input module 15 connected to the display screen 100, each light emitting unit 11 further includes a standby input port 151 and an output port 122, one standby input port 151 is electrically connected to the standby input module 15, an input port 121 of one of the two adjacent light emitting units 11 is electrically connected to the standby input port 151 of the other, and an output port 122 of one of the two adjacent light emitting units 11 is electrically connected to the input port 121 of the other.
The spare input port 151 can continue to operate when the input/output port fails, ensuring that the display 100 remains operational, thereby improving reliability and usability of the overall display system. The standby input/output port 122 can be activated when the main input/output fails, so that the whole display 100 is prevented from being in a non-working state due to the failure of a single unit, and continuous and stable operation of the system is ensured. When the original input or output port 122 is found to be problematic, the system can be quickly switched to the standby port, so that maintenance and repair time is reduced, and the influence caused by faults is reduced.
The provision of the spare input ports 151 provides the system designer with greater flexibility in the size and shape design of the display screen 100 by allowing customized connections to be made according to the application requirements. If a certain light emitting unit 11 needs to be upgraded or replaced, the standby input port 151 is present, so that the change is simpler and quicker, and large-scale redesign is not needed.
The use of dual input/output modes for each lighting unit 11 in the display 100 allows the risk of any failure to be shared among multiple ports without affecting overall performance due to failure at a single point.
Further, in this embodiment, each light emitting unit 11 may be further provided with a normally closed contact 123, the normally closed contact 123 being used for protecting a circuit, and when the circuit is abnormal (e.g., the current exceeds a rated value), the normally closed contact 123 is automatically opened to protect the circuit. The design can automatically isolate the problem unit when the display screen 100 fails, and avoid the fault from diffusing to the whole screen, thereby playing a role in protection.
Fig. 12 is a schematic diagram of a correction method according to the present invention, which is applied to a display 100, and includes the following steps:
Step 201, the display screen 100 is adjusted to enter a standard color mode.
The display screen 100 has a light emitting mode for displaying a standard color, and the light emitting chips 112 in the light emitting units 11 of the display screen 100 are all of the standard color in the standard color mode, so that a uniform color field is achieved, and part of variables in the correction process can be simplified by using the uniform color field, so that the correction efficiency is improved.
Step 202, acquiring coordinate data of each light emitting unit 11 on the display screen 100, and acquiring a display color output value of each light emitting unit 11 according to the coordinate data.
Specifically, the light emitting chips 112 of two adjacent light emitting units 11 on the same row are mounted in opposite positions on each light emitting unit 11 on the display screen 100, and the mounting directions of the light emitting chips 112 of all the light emitting units 11 on the same column are the same. Therefore, the method of detecting the display color output values of all the light emitting units 11 by the detection means may be:
step S1, selecting the upper left corner or the upper right corner of the display screen 100 as a starting point.
Step S2, starting from the top or bottom of the first column, moving vertically downward or upward, measuring each light emitting unit 11, and moving to the top or bottom of the next column after displaying the color output value at the column acquisition completion.
In step S3, since the mounting positions of the light emitting chips 112 of two adjacent light emitting units 11 on the same row are opposite, the sensor direction needs to be adjusted to accurately detect the next row. The detection device needs to alternate direction changes to accommodate the mounting position of the light emitting chip 112 and begin traversing the next column vertically.
Step S4, repeating the step S3 until all columns are detected.
Step S5, after all the light emitting units 11 are detected, the mobile device returns to the starting point.
Further, the detection device can detect n rows or n columns simultaneously, all the light emitting units 11 to be measured are of an array structure of a rows and b columns, and b is an even number. When the detection device can detect n rows at one time, the number of column groups to be detected of the whole array is ceil (b/n), and when the detection device can detect n columns at one time, the number of row groups to be detected of the whole array is ceil (a/n), wherein ceil (x) is a mathematical function, meaning that the whole array is rounded upwards, that is, the smallest integer larger than or equal to x is taken no matter whether x is any decimal. The detection is performed simultaneously on n rows or n columns, and depending on the actual requirements of the application, the direction requiring less traversal times is selected for detection.
Step 203, screening the light emitting units 11 in which the error coefficient between the display color output value and the initial color output value in each light emitting unit 11 is greater than the preset coefficient.
Specifically, the determinant of the matrix with the error coefficient 3*3 is calculated by the following formula:
wherein R1, G1 and B1 are color component values of each channel of the display color output value, R0, G0 and B0 are color component values of each channel of the initial color output value, and the error coefficient is The color component values of each channel of the initial color output value are color component values for the case where the display screen is not operating.
Calculating the determinant of the error matrix requires consideration of the color differences of the three RGB channels simultaneously, rather than considering each channel separately, resulting in a more comprehensive error estimate. By setting a preset error coefficient threshold value, the consistency of the color output of each light emitting unit 11 in the display screen 100 can be maintained. Those cells that exceed the threshold can be quickly identified during the color correction process so that only those cells can be corrected instead of the entire screen, which may save time and resources.
Step 204, determining whether the operation time of the selected light emitting units 11 is less than the preset time. Since the above-mentioned determination of the error coefficient of the light emitting unit 11 needs to further confirm the cause of the color output value error of the light emitting unit 11, considering whether the light emitting unit 11 has a problem of excessively long operation time, the light output of the light emitting unit 11 may decrease over time, resulting in a darker screen as a whole or in part.
Therefore, if the operation time is less than the preset time, it indicates that the light emitting unit 11 is still operable, and the correction is performed on the light emitting unit 11 by performing step 205.
Step 205, calculate the correction value of the display color output value.
The display color output value includes a red component value, a green component value, and a blue component value, the correction value includes a red correction value, a green correction value, and a blue correction value, and the step of calculating the correction value of the display color output value includes:
The calculation formula is that ：Icr(x)=Ir(x)+β(Iavg-Ir(x))Wr(x),Wr(x)=αrgIg(x)+αrbIb(x);
Icg(x)=Ig(x)+β(Iavg-Ig(x))Wg(x),Wg(x)=αgrIr(x)+αgbIb(x);
Icb(x)=Ib(x)+β(Iavg-Ib(x))Wb(x),Wb(x)=αbrIb(x)+αbgIg(x);
Wherein I cr(x)、Icg(x)、Icb (x) is a red correction value, a green correction value, and a blue correction value at x, I r(x)、Ig(x)、Ib (x) is a red component value, a green component value, and a blue component value at x, I avg is an average value of all channels at x, I avg=(Ir(x)+Ig(x)+Ib (x))/3, β is a correction coefficient, W r(x)、Wg(x)、Wb (x) is a compensation weight of red, green, and blue channels at x, respectively, α rg、αrb、αgr、αgb、αbr、αbg is a coefficient in a weight function for realizing component value balance among the channels.
Meanwhile, according to the aforementioned display structure, the plurality of light emitting units are arranged according to the array structure and form the rectangular coordinate system, the coordinate information of x may be represented by the row and column positions, x= (a, b), so that the color and brightness of each light emitting unit 11 on the display 100 may be precisely corrected, thereby compensating for heterogeneity due to factors such as the aging rate difference of the display 100, and the like, the display 100 may be subdivided into individual light emitting units 11, which allows color calibration or maintenance for individual light emitting units 11 without processing the entire screen, thereby saving time and cost.
The adjacent light emitting units 11 combined in the same row have the characteristic of different orientations, so that a unique color correction curve and a correction function are obtained, corresponding adjustment can be made according to the specific orientation condition of each light emitting unit 11, and the problem of color distortion caused by different viewing angles is further improved. Color correction may help to offset color errors that occur when multiple individual display screens 100 are to be tiled into a large screen.
If the purpose of the correction of the lighting unit 11 is to achieve a specific visual effect or to meet a certain color criterion, the values of the correction coefficients and the coefficients in the weighting function may be determined experimentally or empirically, possibly requiring different coefficient values for different usage scenarios. For example, outdoor display and indoor display each have different maximum brightness and contrast for display screen 100, and ambient light conditions (e.g., circadian alternations, changes in indoor and outdoor illumination, etc.) have a significant impact on the viewing experience, and the correction function can dynamically adjust the display screen 100 color to accommodate these condition changes.
By such arrangement, color consistency among the display screens 100 can be ensured, and color deviation among a plurality of display screens 100 can be corrected, so that the displayed color approximates to the color in the real world, and color deviation caused by factors such as display aging, manufacturing defects, ambient light change and the like can be reduced or eliminated, so that stable display effect can be maintained.
Color balance can also be adjusted to accommodate the visual perception of the viewer, and viewing experience can be enhanced for application to various types of display screens 100 (LCD, LED, OLED, etc.), enabling personalized corrections for different screen technologies and models. Color correction may be used as an integral part of display color management to help improve the accuracy of the color calibration tool, thereby providing more specialized device performance.
Step 206, transmitting the correction value to the database of the display 100, and adjusting the input signal of the corresponding light emitting unit 11. The control main board built in the display screen 100 is used for calculating a correction value and transmitting the correction value to the input module 12, and the input module 12 corrects the light emitting chips 112 of the plurality of light emitting units 11 connected in sequence.
If the working time is greater than or equal to the preset time, step 207 is executed, and step 207 is executed to replace the corresponding light emitting unit 11.
The multiple light emitting units 11 of the display screen 100 can be detachably arranged, the maintenance efficiency is improved by quickly disassembling the light emitting units 11, unnecessary early replacement of the light emitting units 11 which can also work is avoided, unexpected maintenance cost is reduced, the display screen 100 can continuously keep the best display effect, the whole service life is prolonged, the energy efficiency of the whole display system can be maintained by timely replacing aging elements, and the maintenance and upgrading of the display screen 100 on a large scale are facilitated.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. A display screen, comprising: the LED lamp comprises a circuit board and at least two light-emitting units, wherein the light-emitting units are sequentially and electrically connected and are arranged on the circuit board at intervals, each light-emitting unit comprises a driving piece and a light-emitting chip which are arranged at intervals on one side away from the circuit board, the periphery of each driving piece is only provided with the light-emitting chip, and the periphery of each light-emitting chip is only provided with the driving piece;
The light emitting units are arranged along the array structure, the number of the light emitting units in the same row is even, and the arrangement directions of the light emitting chips and the driving pieces in two adjacent light emitting units are opposite;
The display screen also comprises a display circuit, wherein the display circuit comprises an input module, a power supply and a ground wire, which are connected with the display screen, each light-emitting unit comprises an input port, a ground port and an electric connection port, one input port is electrically connected with the input module, each ground port is electrically connected with the ground wire, and each electric connection port is electrically connected with the power supply;
Each light-emitting unit further comprises an output port, and the output port of one of two adjacent light-emitting units is electrically connected with the input port of the other light-emitting unit;
each light-emitting unit further comprises a normally-closed contact electrically connected with the input port, and the normally-closed contact of one of the two adjacent light-emitting units is electrically connected with the other input port.
2. The display screen of claim 1, wherein the display circuit further comprises a standby input port connected to the display screen, each of the light emitting units further comprises a standby input port and an output port, one of the standby input ports is electrically connected to the standby input port, the input port of one of the adjacent two light emitting units is electrically connected to the standby input port of the other, and the output port of one of the adjacent two light emitting units is electrically connected to the input port of the other.
3. A correction method applied to the display screen as claimed in claim 1 or 2, characterized in that the steps comprise:
Adjusting the display screen to enter a standard color mode;
Acquiring coordinate data of each light-emitting unit on the display screen, and acquiring a display color output value of each light-emitting unit according to the coordinate data;
Screening the light-emitting units with error coefficients of the display color output value and the initial color output value larger than preset coefficients;
judging whether the working time of the screened light-emitting units is less than a preset time;
if the working time is smaller than the preset time, calculating a correction value of the display color output value;
Transmitting the correction value to a database of a display screen, and adjusting an input signal of a corresponding light emitting unit.
4. The correction method according to claim 3, wherein the step of judging whether the operating time of the light emitting unit satisfying the condition is less than a preset time further comprises:
And if the working time is longer than the preset time, replacing the corresponding light-emitting unit.
5. The correction method according to claim 3, wherein the step of judging whether or not an error coefficient of the display color output value and the initial color output value of each of the light emitting units is larger than a preset coefficient further comprises:
The error coefficient is a determinant of a matrix 3*3, and the calculation formula of the matrix is as follows:
wherein R1, G1 and B1 are color component values of each channel of the display color output value, R0, G0 and B0 are color component values of each channel of the initial color output value, and the error coefficient is Is a standard value of (c).
6. A correction method as claimed in claim 3, wherein the display color output value includes a red component value, a green component value, and a blue component value, the correction values include a red correction value, a green correction value, and a blue correction value, the step of calculating the correction value of the display color output value includes:
The calculation formula is that ：Icr(x)=Ir(x)+β(Iavg-Ir(x))Wr(x),Wr(x)=αrgIg(x)+αrbIb(x);
Icg(x)=Ig(x)+β(Iavg-Ig(x))Wg(x),Wg(x)=αgrIr(x)+αgbIb(x);
Icb(x)=Ib(x)+β(Iavg-Ib(x))Wb(x),Wb(x)=αbrIb(x)+αbgIg(x);
Wherein I cr(x)、Icg(x)、Icb (x) is a red correction value, a green correction value, and a blue correction value at x, I r(x)、Ig(x)、Ib (x) is a red component value, a green component value, and a blue component value at x, I avg is an average value of all channels at x, I avg=(Ir(x)+Ig(x)+Ib (x))/3, β is a correction coefficient, W r(x)、Wg(x)、Wb (x) is a compensation weight of red, green, and blue channels at x, respectively, α rg、αrb、αgr、αgb、αbr、αbg is a coefficient in a weight function for realizing component value balance among the channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410677978.5A CN118280275B (en) | 2024-05-29 | 2024-05-29 | Display screen and correction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410677978.5A CN118280275B (en) | 2024-05-29 | 2024-05-29 | Display screen and correction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118280275A CN118280275A (en) | 2024-07-02 |
| CN118280275B true CN118280275B (en) | 2024-08-13 |
Family
ID=91643595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410677978.5A Active CN118280275B (en) | 2024-05-29 | 2024-05-29 | Display screen and correction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118280275B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212209488U (en) * | 2020-06-18 | 2020-12-22 | 深圳雷曼光电科技股份有限公司 | Pixel structure, display panel and display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4389447B2 (en) * | 2003-01-28 | 2009-12-24 | セイコーエプソン株式会社 | Manufacturing method of electro-optical device |
| KR20180018246A (en) * | 2016-08-11 | 2018-02-21 | 주식회사 루멘스 | Display module comprising an array of led chip groups |
| CN219143700U (en) * | 2022-08-02 | 2023-06-06 | 深圳市奥拓电子股份有限公司 | LED display module assembly and display screen |
| CN116234104B (en) * | 2023-04-24 | 2023-07-18 | 深圳市天成照明有限公司 | LED lamp bead circuit and LED lamp |
-
2024
- 2024-05-29 CN CN202410677978.5A patent/CN118280275B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212209488U (en) * | 2020-06-18 | 2020-12-22 | 深圳雷曼光电科技股份有限公司 | Pixel structure, display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118280275A (en) | 2024-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4856249B2 (en) | Display device | |
| JP4714297B2 (en) | Display device | |
| KR100911690B1 (en) | Low profile, large screen display using a rear projection array system | |
| US7940013B2 (en) | Lighting apparatus and display apparatus therewith | |
| US8963800B2 (en) | Multi-display device and image display device | |
| US9240145B2 (en) | Multi-display device and image display device | |
| EP2312564A1 (en) | Multi-primary color display device | |
| US20140118408A1 (en) | Management system for unifying led light color and method thereof | |
| WO2009110456A1 (en) | Lighting device, and display device having the same | |
| JP2008123818A (en) | Backlight device, backlight driving method, and color image display device | |
| CN101996575A (en) | Display device, method for correcting luminance degradation, and electronic apparatus | |
| KR101893949B1 (en) | LED Individual Correction Method Based On The Operating Computer Of The LED Signboard | |
| JP2009098579A (en) | Display system and method of controling the same | |
| CN103310740B (en) | The image treatment method of display device and display device thereof | |
| JP2003058125A (en) | Electronic equipment | |
| CN110910805A (en) | Compensation adjusting device and compensation adjusting method of display screen | |
| CN101154371A (en) | Display apparatus and image processing method thereof | |
| JP2006251516A (en) | Display device and multi-display system | |
| EP1548571A1 (en) | Configurable tiled emissive display | |
| CN118280275B (en) | Display screen and correction method thereof | |
| CN113241037B (en) | LED screen single-point brightness correction method and system | |
| CN114863883B (en) | Direct type backlight light-emitting diode display and light-emitting control method | |
| JP2009098581A (en) | Display system and control method of display system | |
| CN108022524B (en) | Pixel structure, display screen and method for adjusting brightness uniformity of display screen | |
| CN102324225A (en) | Optical compensating system of liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |