CN111081193A - Display and brightness adjusting method thereof - Google Patents
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- CN111081193A CN111081193A CN202010014329.9A CN202010014329A CN111081193A CN 111081193 A CN111081193 A CN 111081193A CN 202010014329 A CN202010014329 A CN 202010014329A CN 111081193 A CN111081193 A CN 111081193A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
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Abstract
The invention relates to a display, which comprises a backlight source, a driving module and a control module, wherein the backlight source comprises a plurality of light-emitting units which are arranged in an array manner, a rated power distribution matrix of the backlight source is a matrix A, and each element on the matrix A corresponds to the light-emitting units of the backlight source one by one; the driving module is respectively electrically connected with the plurality of light-emitting units and is used for detecting the driving information of the plurality of light-emitting units and judging whether each light-emitting unit fails or not according to the driving information; the control module is respectively electrically connected with the plurality of light-emitting units, and is used for calculating and generating an actual output power matrix B of the backlight source according to the matrix A and setting the actual output power matrix of the backlight source as the matrix B when one of the light-emitting units fails, and the control module is also used for adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display and a brightness adjusting method of the display.
Background
As the light emitting efficiency of the light emitting diode is continuously improved and the cost is gradually reduced, the light emitting diode gradually replaces a cold cathode fluorescent lamp as a backlight source. The service life of the light emitting diodes on the backlight source is different due to the difference of the manufacturing process, and the backlight source may have abnormal failure of individual light emitting diodes during the use process, and the area corresponding to the failed light emitting diode on the display panel affected by the failed light emitting diode has obvious brightness difference with other areas, which affects the display quality of the display.
Disclosure of Invention
Accordingly, it is necessary to provide a display and a method for adjusting the brightness of the display, which are directed to the problem that due to the abnormal failure of the individual leds, the area of the display panel corresponding to the failed led will have a significant brightness difference from other areas under the influence of the failed led.
A display, comprising:
the backlight source comprises a plurality of light-emitting units which are arranged in an array, a rated power distribution matrix of the backlight source is a matrix A, and each element on the matrix A corresponds to the light-emitting unit of the backlight source one by one;
the driving module is respectively electrically connected with the plurality of light-emitting units and used for detecting the driving information of the plurality of light-emitting units and judging whether each light-emitting unit is invalid or not according to the driving information; and
and the control module is respectively electrically connected with the plurality of light-emitting units, and is used for calculating and generating an actual output power matrix of the backlight source according to the matrix A and setting the actual output power matrix of the backlight source as a matrix B when one light-emitting unit fails, and the control module is also used for adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
In the display, the backlight source comprises a plurality of light-emitting units arranged in an array, a rated power distribution matrix of the backlight source is a matrix A, each element on the matrix A corresponds to the light-emitting unit of the backlight source one by one, and the detection module detects the driving information of the plurality of light-emitting units and judges whether each light-emitting unit fails or not according to the driving information; when one of the light-emitting units fails, the control module calculates and generates an actual output power matrix of the backlight source according to the matrix A, and adjusts the output power of each light-emitting unit on the backlight source according to the actual output power matrix to balance the display brightness of the display, so that the brightness difference between the area corresponding to the failed light-emitting unit and other areas on the display panel when the light-emitting unit fails is avoided, and the display quality of the display is improved.
In one embodiment, the control module is configured to obtain a position of an element X corresponding to a failed light emitting unit on the matrix a, set an element surrounding the element X to be a 1-order element X1, set an element surrounding the 1-order element X1 to be a 2-order element X2, set an element surrounding the 2-order element X2 to be a 3-order element X3, and so on, set an element surrounding an n-1-order element Xn-1 to be an n-order element Xn, adjust the 1-order element X1, the 2-order element X2, the 3-order element X3, …, and a value of the n-order element Xn, and generate an actual output power matrix of the backlight according to the adjusted 1-order element X1, the 2-order element X2, the 3-order element X3, …, and the value of the n-order element Xn, where each of the 1-order element X1, the 2-order element X2, and the 3-order element X3 is used to generate an actual output power matrix of the backlight …, the adjusted value of the n-th order element Xn is used as the actual output power of the light emitting unit corresponding to each of the 1 st order element X1, the 2 nd order element X2, the 3 rd order element X3, … and the n-th order element Xn, wherein n is an integer greater than or equal to 1.
In one embodiment, the values of the 1 st order element X1 have the same adjustment magnitude and direction, the values of the 2 nd order element X2 have the same adjustment magnitude and direction, the values of the 3 rd order element X3 have the same adjustment magnitude and direction, …, and the values of the n th order element Xn have the same adjustment magnitude and direction.
In one embodiment, the adjusted values of all the 1-order elements X1 are increased by N1% from the original values, the adjusted values of all the 2-order elements X2 are increased by N2% from the original values, the adjusted values of all the 3-order elements X3 are increased by N3% and … from the original values, the adjusted values of all the N-order elements Xn are increased by Nn% from the original values, and N1> N2> N3> … > Nn.
In one embodiment, the adjusted values of all 1-order elements X1 are reduced by M1% from the original values, the adjusted values of all 2-order elements X2 are reduced by M2% from the original values, the adjusted values of all 3-order elements X3 are reduced by M3% from the original values, …, the adjusted values of all n-order elements Xn are reduced by Mn% from the original values, and M1< M2< M3< … < Mn.
A method for adjusting the brightness of a display comprises a backlight source, wherein the backlight source comprises a plurality of light-emitting units which are arranged in an array; the brightness adjusting method of the display comprises the following steps:
acquiring a rated power distribution matrix of the backlight source, and setting the rated power distribution matrix of the backlight source as a matrix A, wherein each element on the matrix A corresponds to a light-emitting unit of the backlight source one by one;
detecting driving information of the plurality of light-emitting units and judging whether each light-emitting unit fails according to the driving information;
when one of the light-emitting units fails, calculating and generating an actual output power matrix of the backlight source according to the matrix A, and setting the actual output power matrix of the backlight source as a matrix B;
and adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
According to the brightness adjusting method of the display, the backlight comprises the plurality of light emitting units which are arranged in an array mode, the rated power distribution matrix of the backlight is the matrix A, each element on the matrix A corresponds to the light emitting unit of the backlight in a one-to-one mode, when one light emitting unit of the backlight fails, the actual output power matrix of the backlight is generated through calculation according to the matrix A, the output power of each light emitting unit on the backlight is adjusted according to the actual output power matrix, the display brightness of the display is balanced, when the light emitting unit fails, the brightness difference between the area corresponding to the failed light emitting unit and other areas on the display panel is avoided, and the display quality of the display is improved.
In one embodiment, the calculating and generating the actual output power matrix of the backlight source according to the matrix a specifically includes:
obtaining a position of an element X corresponding to a failed light emitting unit on the matrix A, setting an element surrounding the element X as a 1 st order element X1, setting an element surrounding the 1 st order element X1 as a 2 nd order element X2, setting an element surrounding the 2 nd order element X2 as a 3 rd order element X3, and so on, setting an element surrounding an n-1 st order element Xn-1 as an n th order element Xn, adjusting values of the 1 st order element X1, the 2 nd order element X2, the 3 rd order element X3, …, and the n th order element Xn, respectively, and generating an actual output power matrix of the backlight according to the adjusted values of the 1 st order element X1, the 2 nd order element X2, the 3 rd order element X3, …, the n th order element Xn generating an actual output power matrix of the backlight, each of the 1 st order element X1, the 2 nd order element X2, the 3 rd element X3, …, and the adjusted values of the n th order element Xn being used as each X1, The 2-order element X2, the 3-order elements X3, …, and the actual output power of the light emitting unit corresponding to the nth-order element Xn, where n is an integer greater than or equal to 1.
In one embodiment, the values of the 1 st order element X1 have the same adjustment magnitude and direction, the values of the 2 nd order element X2 have the same adjustment magnitude and direction, the values of the 3 rd order element X3 have the same adjustment magnitude and direction, …, and the values of the n th order element Xn have the same adjustment magnitude and direction.
In one embodiment, the adjusted values of all the 1-order elements X1 are increased by N1% from the original values, the adjusted values of all the 2-order elements X2 are increased by N2% from the original values, the adjusted values of all the 3-order elements X3 are increased by N3% and … from the original values, the adjusted values of all the N-order elements Xn are increased by Nn% from the original values, and N1> N2> N3> … > Nn.
In one embodiment, the adjusted values of all 1-order elements X1 are reduced by M1% from the original values, the adjusted values of all 2-order elements X2 are reduced by M2% from the original values, the adjusted values of all 3-order elements X3 are reduced by M3% from the original values, …, the adjusted values of all n-order elements Xn are reduced by Mn% from the original values, and M1< M2< M3< … < Mn.
Drawings
FIG. 1 is a schematic diagram of a display according to an embodiment;
FIG. 2 is a diagram of a matrix A in an embodiment;
FIG. 3 is a schematic diagram of a matrix A in another embodiment;
FIG. 4 is a diagram of matrix B in one embodiment;
FIG. 5 is a diagram of a matrix B in another embodiment;
FIG. 6 is a flowchart illustrating a method for adjusting brightness of a display according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, an embodiment of the present disclosure provides a display including a backlight 10, a driving module 20, a control module 30, and a display panel 40.
The backlight 10 is located on one side of the light incident surface of the display panel 40, the backlight 10 includes a plurality of light emitting units 11 arranged in an array, and light emitted by the light emitting units 11 is modulated by the display panel 40 and then emitted from the light emitting surface of the display panel 40. The rated power distribution matrix of the backlight 10 is a matrix a, and each element on the matrix a corresponds to the light emitting unit 11 of the backlight 10 one by one. When there is no failure of the light emitting unit 11 on the backlight 10, the control module 30 drives the light emitting unit 11 with the value of each element on the matrix a as the output power of the corresponding one of the light emitting units 11.
In some embodiments, backlight 10 may be a direct-lit backlight 10. The light emitting unit 11 may be an LED (light emitting Diode), and the LED has high light emitting efficiency and low cost. The display may be a liquid crystal display, and the display panel 40 may be a liquid crystal panel.
The driving module 20 is electrically connected to the plurality of light emitting units 11, and is configured to detect driving information of the plurality of light emitting units 11 and determine whether each light emitting unit 11 fails according to the driving information.
The driving information includes a driving current and a driving voltage. Whether the light emitting unit 11 is open-circuited or not can be determined by detecting the driving current of the light emitting unit 11, and whether the light emitting unit 11 is short-circuited or open-circuited or not can be determined by detecting the driving voltage of the light emitting unit 11. Specifically, the driving module 20 may store a preset driving current and a preset driving voltage, the driving module 20 compares the detected driving current of each light emitting unit 11 with the preset driving current or compares the detected driving voltage of each light emitting unit 11 with the preset driving voltage, if a difference between the detected driving current of the light emitting unit 11 and the preset driving current exceeds a preset driving current range, it is determined that the light emitting unit 11 fails, and if a difference between the detected driving voltage of the light emitting unit 11 and the preset driving voltage exceeds a preset driving voltage range, it is determined that the light emitting unit 11 fails.
The control module 30 is electrically connected to the plurality of light emitting units 11, respectively, the control module 30 may be electrically connected to the driving module 20, and the control module 30 is electrically connected to each of the light emitting units 11 through the driving module 20. The control module 30 is configured to calculate and generate an actual output power matrix of the backlight 10 according to the matrix a when one of the light-emitting units 11 fails, and set the actual output power matrix of the backlight 10 as a matrix B. The control module 30 is further configured to adjust the output power of each light-emitting unit 11 on the backlight 10 according to the matrix B, so as to equalize the display brightness of the display.
The light emitting unit 11 fails, i.e., the light emitting unit 11 does not emit light due to its own failure.
Referring to fig. 2, specifically, the control module 30 is configured to obtain a position of an element X corresponding to the failed light emitting unit 11 on the matrix a, set an element surrounding the element X as a 1-order element X1, set an element surrounding a 1-order element X1 as a 2-order element X2, set an element surrounding a 2-order element X2 as a 3-order element X3, and so on, set an element surrounding an n-1-order element Xn-1 as an n-order element Xn, adjust values of the 1-order element X1, the 2-order element X2, the 3-order element X3, …, and the n-order element Xn, and generate an actual output power matrix of the backlight according to the adjusted values of the 1-order element X1, the 2-order element X2, the 3-order element X3, …, and the n-order element Xn, wherein each of the 1-order element X1, the 2 element X2, the 3-order element X3, …, and the adjusted value of the n is used as each 1-order element X1, 2, And the actual output power of the light emitting unit 11 corresponding to the 3 rd order elements X3 and … and the nth order element Xn, where n is an integer greater than or equal to 1.
The luminance of the light emitting unit 11 is proportional to the power of the light emitting unit 11, and the control module 30 controls the luminance of the light emitting unit 11 by controlling the actual output power output to the light emitting unit 11. Because the brightness of each block on the display panel 40 is determined by the light emission superposition of the light-emitting units 11 in a certain area on the backlight 10, when the light-emitting units 11 in the area fail, the brightness accumulated in the area will be different from the brightness accumulated in other areas, so that when the light-emitting units 11 in a certain area on the backlight 10 fail, the actual output power of other light-emitting units 11 in the area that do not fail can be adjusted, and then the light-emitting brightness of other light-emitting units 11 in the area that do not fail can be adjusted, so as to adjust the overall light-emitting brightness of the area, avoid the brightness difference from other areas, and improve the display quality of the display.
When the light-emitting unit fails, the actual output power of the light-emitting units around the failed light-emitting unit is adjusted, and the light-emitting brightness of the light-emitting units around the failed light-emitting unit is further adjusted, so that the brightness compensation is performed on the area of the display panel 40 corresponding to the failed light-emitting unit.
It should be noted that the backlight 10 includes j rows and k columns of light emitting units 11 arranged in an array, that is, the backlight 10 has j × k light emitting units 11, the matrix a has j × k elements, and the value of each element in the matrix a corresponds to the rated power value of one light emitting unit 11 of the backlight 10. The matrix B has j × k elements, and the value of each element in the matrix B corresponds to the adjusted output power value of the light emitting unit 11 of one backlight 10. The positions of the 1 st order element X1, the 2 nd order element X2, the 3 rd order elements X3 and … after the numerical adjustment in the matrix B are the same as the positions of the 1 st order element X1, the 2 nd order element X2, the 3 rd order elements X3 and … and the n th order element Xn in the matrix A. For example, if one of the 1 st order elements X1 in matrix A is at row 2 and column 3 of matrix A, then the 1 st order element X1 is adjusted to be at row 2 and column 3 of matrix B. The value of the element in the same position as the element X on the matrix B may be set to an arbitrary value or may not be set. In one embodiment, the adjusted value of element X is zero.
Further, the adjustment range and the adjustment direction of the values of all the 1 st order elements X1 are the same, the adjustment range and the adjustment direction of the values of all the 2 nd order elements X2 are the same, the adjustment range and the adjustment direction of the values of all the 3 rd order elements X3 are the same, …, and the adjustment range and the adjustment direction of the values of all the n th order elements Xn are the same. By performing the brightness adjustment with the same amplitude for each order of the light emitting units 11 of the failed light emitting unit 11, the control module 30 can adjust the actual output power of each order of the light emitting units 11 more easily and more uniformly. In other embodiments, the value of the element X1 of each order may be adjusted by different magnitudes, so that the actual output power of the light-emitting unit 11 of each order around the failed light-emitting unit 11 may be adjusted by different magnitudes. The direction of adjustment is either increasing or decreasing.
In one embodiment, the adjusted values of all 1-order elements X1 are increased by N1% from the original values, the adjusted values of all 2-order elements X2 are increased by N2% from the original values, the adjusted values of all 3-order elements X3 are increased by N3% and … from the original values, and the adjusted values of all N-order elements Xn are increased by Nn% from the original values, N1> N2> N3> … > Nn. By adjusting the light-emitting units 11 around the failed light-emitting unit 11 in a manner that the actual output power increase gradually decreases from near to far, the light-emitting units 11 near the failed light-emitting unit 11 can increase the light-emitting amount to compensate for the light-emitting amount of the failed light-emitting unit 11 that is missing due to failure.
In one embodiment, the adjusted values of all 1-order elements X1 are reduced by M1% from the original values, the adjusted values of all 2-order elements X2 are reduced by M2% from the original values, the adjusted values of all 3-order elements X3 are reduced by M3% from the original values, …, the adjusted values of all n-order elements Xn are reduced by Mn% from the original values, and M1< M2< M3< … < Mn. By adjusting the light emitting units 11 around the failed light emitting unit 11 so that the actual output power decreases by increasing amounts gradually from near to far, the light emitting unit 11 near the failed light emitting unit 11 can be made to decrease in light emission amount compared to the light emitting unit 11 far from the failed light emitting unit 11, and the light emission amount of the failed light emitting unit 11 missing due to failure can be compensated.
In one embodiment, the matrix a has 4 × 8 elements, 4 × 8 elements are arranged in 4 rows and 8 columns, i.e., the backlight has 4 × 8 light-emitting units 11, and each element has a value of 1, as shown in fig. 3. When the light emitting unit 11 located in the 2 nd row and the 5 th column of the backlight source fails, the value of the 1 st order element of the 2 nd row and the 5 th column element on the matrix a is increased by 10%, the value of the 2 nd order element of the 2 nd row and the 5 th column element on the matrix a is increased by 5%, the value of the more than 3 rd order element of the 2 nd row and the 5 th column element on the matrix a remains unchanged, and the matrix B is generated according to the adjusted value of the more than 3 rd order element of the 2 nd row and the 5 th column element on the matrix a, the adjusted value of the 2 nd order element of the 5 th column element on the matrix a, the 2 nd row and the 5 th column element on the matrix a, and the 2 nd row and the 5 th column element on the matrix B are zero, as shown in fig. 4.
In one embodiment, the matrix a has 4 × 8 elements, 4 × 8 elements are arranged in 4 rows and 8 columns, that is, the backlight source has 4 × 8 light-emitting units 11, each element has a value of 1, when a light-emitting unit 11 located in row 2 and column 5 of the backlight source fails, the value of the 1 st element of the 2 nd and 5 th elements on the matrix a remains unchanged, the value of the 2 nd element of the 5 th element on the row 2 and column 5 on the matrix a is reduced by 10%, the value of the 3 rd or more elements on the row 2 and column 5 on the matrix a is reduced by 20%, the matrix B is generated according to the adjusted values of the 2 nd element on the row 2 and column 5 element 1, the row 2 on the matrix a, the value of the 2 nd element of the column 5, the row 2 on the matrix a, and the value of the 3 rd or more elements on the column 5, the adjusted values of the 2 nd and column 5 th elements on the matrix B are zero, as shown in fig. 5.
In some embodiments, the driver module 20 is also used to record the location of the failed lighting unit 11 on the backlight 10. By recording the position of the failed light-emitting unit 11 on the backlight 10, the failed light-emitting unit 11 can be quickly positioned.
The display comprises a backlight source, a detection module and a display module, wherein the backlight source comprises a plurality of light-emitting units which are arranged in an array mode, a rated power distribution matrix of the backlight source is a matrix A, each element on the matrix A corresponds to the light-emitting unit of the backlight source one by one, and the detection module detects driving information of the light-emitting units and judges whether each light-emitting unit fails or not according to the driving information; when one of the light-emitting units fails, the control module calculates and generates an actual output power matrix of the backlight source according to the matrix A, and adjusts the output power of each light-emitting unit on the backlight source according to the actual output power matrix to balance the display brightness of the display, so that the brightness difference between the area corresponding to the failed light-emitting unit and other areas on the display panel when the light-emitting unit fails is avoided, and the display quality of the display is improved.
Referring to fig. 6, an embodiment of the present application further provides a brightness adjustment method for a display, where the display includes a backlight source, and the backlight source includes a plurality of light emitting units arranged in an array; the brightness adjusting method of the display comprises the following steps.
Step S01, obtaining a rated power distribution matrix of the backlight source, and setting the rated power distribution matrix of the backlight source as a matrix a, where each element on the matrix a corresponds to a light-emitting unit of the backlight source one to one.
Step S02, detecting the driving information of the plurality of light emitting units and determining whether each light emitting unit is failed according to the driving information.
And step S03, when one of the light-emitting units fails, calculating and generating an actual output power matrix of the backlight source according to the matrix A, and setting the actual output power matrix of the backlight source as a matrix B.
And step S04, adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
Calculating and generating an actual output power matrix of the backlight source according to the matrix A specifically comprises:
obtaining the position of the element X corresponding to the failed light-emitting unit on the matrix A, setting the element surrounding the element X as 1-order element X1, the element surrounding 1-order element X1 as 2-order element X2, the element surrounding 2-order element X2 as 3-order element X3, and so on, setting the element surrounding n-1-order element Xn-1 as n-order element Xn, adjusting the values of 1-order element X1, 2-order element X2, 3-order element X3, …, n-order element Xn, respectively, and generating the actual output power matrix of the backlight according to the adjusted values of 1-order element X1, 2-order element X2, 3-order element X3, …, n-order element Xn, each adjusted value of 1-order element X1, 2-order element X2, 3-order element X3, …, n-order element Xn being used as the actual output power unit of each 1-order element X1, 2-order element X2, 3-order element X …, Xn, 3 corresponding to the actual output power element Xn of the backlight, wherein n is an integer greater than or equal to 1.
When the light-emitting unit fails, the actual output power of the light-emitting units around the failed light-emitting unit is adjusted, and the light-emitting brightness of the light-emitting units around the failed light-emitting unit is further adjusted, so that the brightness compensation is performed on the area of the display panel 40 corresponding to the failed light-emitting unit.
In some embodiments, the magnitude and direction of adjustment of the values of all the 1 st order elements X1 are the same, the magnitude and direction of adjustment of the values of all the 2 nd order elements X2 are the same, the magnitude and direction of adjustment of the values of all the 3 rd order elements X3 are the same, …, and the magnitude and direction of adjustment of the values of all the n th order elements Xn are the same. By performing the brightness adjustment with the same amplitude for each order of the light emitting units 11 of the failed light emitting unit 11, the control module 30 can adjust the actual output power of each order of the light emitting units 11 more easily and more uniformly. In other embodiments, the value of the element X1 of each order may be adjusted by different magnitudes, so that the actual output power of the light-emitting unit 11 of each order around the failed light-emitting unit 11 may be adjusted by different magnitudes. The direction of adjustment is either increasing or decreasing.
In some embodiments, the adjusted value of the 1 st order element X1 is increased by N1% from the original value, the adjusted value of the 2 nd order element X2 is increased by N2% from the original value, the adjusted value of the 3 rd order element X3 is increased by N3% from the original value, and …, the adjusted value of the N th order element Xn is increased by Nn% from the original value, and N1> N2> N3> … > Nn. By adjusting the light-emitting units 11 around the failed light-emitting unit 11 in a manner that the actual output power increase gradually decreases from near to far, the light-emitting units 11 near the failed light-emitting unit 11 can increase the light-emitting amount to compensate for the light-emitting amount of the failed light-emitting unit 11 that is missing due to failure.
In some embodiments, the adjusted value of the 1 st order element X1 is M1% less than the original value, the adjusted value of the 2 nd order element X2 is M2% less than the original value, the adjusted value of the 3 rd order element X3 is M3% less than the original value, …, the adjusted value of the n th order element Xn is Mn% less than the original value, M1< M2< M3< … < Mn. By adjusting the light emitting units 11 around the failed light emitting unit 11 so that the actual output power decreases by increasing amounts gradually from near to far, the light emitting unit 11 near the failed light emitting unit 11 can be made to decrease in light emission amount compared to the light emitting unit 11 far from the failed light emitting unit 11, and the light emission amount of the failed light emitting unit 11 missing due to failure can be compensated.
According to the brightness adjusting method of the display, the backlight comprises a plurality of light emitting units which are arranged in an array mode, a rated power distribution matrix of the backlight is a matrix A, each element on the matrix A corresponds to the light emitting unit of the backlight one by one, when one light emitting unit of the backlight fails, an actual output power matrix of the backlight is generated through calculation according to the matrix A, the output power of each light emitting unit on the backlight is adjusted according to the actual output power matrix, the display brightness of the display is balanced, when the light emitting unit fails, the situation that brightness difference occurs between an area corresponding to the failed light emitting unit and other areas on a display panel is avoided, and the display quality of the display is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display, comprising:
the backlight source comprises a plurality of light-emitting units which are arranged in an array, a rated power distribution matrix of the backlight source is a matrix A, and each element on the matrix A corresponds to the light-emitting unit of the backlight source one by one;
the driving module is respectively electrically connected with the plurality of light-emitting units and used for detecting the driving information of the plurality of light-emitting units and judging whether each light-emitting unit is invalid or not according to the driving information; and
and the control module is respectively electrically connected with the plurality of light-emitting units, and is used for calculating and generating an actual output power matrix of the backlight source according to the matrix A and setting the actual output power matrix of the backlight source as a matrix B when one light-emitting unit fails, and the control module is also used for adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
2. The display of claim 1, wherein the control module is configured to obtain a position of an element X corresponding to the failed light-emitting unit on the matrix a, set an element surrounding the element X as a 1-order element X1, set an element surrounding the 1-order element X1 as a 2-order element X2, set an element surrounding the 2-order element X2 as a 3-order element X3, and so on, set an element surrounding an n-1-order element Xn-1 as an n-order element Xn, respectively adjust the values of the 1-order element X1, the 2-order element X2, the 3-order elements X3 and …, and the n-order element Xn, and generate the actual output power matrix of the backlight according to the adjusted values of the 1-order element X1, the 2-order element X2, the 3-order elements X3 and …, the n-order element Xn generating the actual output power matrix of the backlight, and each of the 1, X1, the order element X1, The adjusted values of the 2-order element X2, the 3-order elements X3, …, and the n-order element Xn are used as the actual output power of the light emitting unit corresponding to each of the 1-order element X1, the 2-order element X2, the 3-order elements X3, …, and the n-order element Xn, where n is an integer greater than or equal to 1.
3. The display of claim 2, wherein the adjustment magnitudes and adjustment directions of the values of all 1 st order elements X1 are the same, the adjustment magnitudes and adjustment directions of the values of all 2 nd order elements X2 are the same, the adjustment magnitudes and adjustment directions of the values of all 3 rd order elements X3 are the same, …, and the adjustment magnitudes and adjustment directions of the values of all n th order elements Xn are the same.
4. The display of claim 3, wherein the adjusted values of all 1 st order elements X1 are increased by N1%, the adjusted values of all 2 nd order elements X2 are increased by N2%, the adjusted values of all 3 rd order elements X3 are increased by N3%, …, and the adjusted values of all N th order elements Xn are increased by N, N1> N2> N3> … > Nn.
5. The display of claim 3, wherein the adjusted values of all 1 st order elements X1 are reduced by M1% from the original values, the adjusted values of all 2 nd order elements X2 are reduced by M2% from the original values, the adjusted values of all 3 rd order elements X3 are reduced by M3% from the original values, …, the adjusted values of all n th order elements Xn are reduced by Mn% from the original values, and M1< M2< M3< … < Mn.
6. A method for adjusting the brightness of a display comprises a backlight source, wherein the backlight source comprises a plurality of light-emitting units which are arranged in an array; the method for adjusting the brightness of the display is characterized by comprising the following steps:
acquiring a rated power distribution matrix of the backlight source, and setting the rated power distribution matrix of the backlight source as a matrix A, wherein each element on the matrix A corresponds to a light-emitting unit of the backlight source one by one;
detecting driving information of the plurality of light-emitting units and judging whether each light-emitting unit fails according to the driving information;
when one of the light-emitting units fails, calculating and generating an actual output power matrix of the backlight source according to the matrix A, and setting the actual output power matrix of the backlight source as a matrix B;
and adjusting the output power of each light-emitting unit on the backlight source according to the matrix B so as to balance the display brightness of the display.
7. The method according to claim 6, wherein the calculating and generating the actual output power matrix of the backlight source according to the matrix a specifically comprises:
obtaining a position of an element X corresponding to a failed light emitting unit on the matrix A, setting an element surrounding the element X as a 1 st order element X1, setting an element surrounding the 1 st order element X1 as a 2 nd order element X2, setting an element surrounding the 2 nd order element X2 as a 3 rd order element X3, and so on, setting an element surrounding an n-1 st order element Xn-1 as an n th order element Xn, adjusting values of the 1 st order element X1, the 2 nd order element X2, the 3 rd order element X3, …, and the n th order element Xn, respectively, and generating an actual output power matrix of the backlight according to the adjusted values of the 1 st order element X1, the 2 nd order element X2, the 3 rd order element X3, …, the n th order element Xn generating an actual output power matrix of the backlight, each of the 1 st order element X1, the 2 nd order element X2, the 3 rd element X3, …, and the adjusted values of the n th order element Xn being used as each X1, The 2-order element X2, the 3-order elements X3, …, and the actual output power of the light emitting unit corresponding to the nth-order element Xn, where n is an integer greater than or equal to 1.
8. The method of claim 7, wherein the adjustment range and the adjustment direction of the numerical values of all the 1 st-order elements X1 are the same, the adjustment range and the adjustment direction of the numerical values of all the 2 nd-order elements X2 are the same, the adjustment range and the adjustment direction of the numerical values of all the 3 rd-order elements X3 are the same, …, and the adjustment range and the adjustment direction of the numerical values of all the n-th-order elements Xn are the same.
9. The method of claim 8, wherein the adjusted values of all 1 st order elements X1 are increased by N1%, the adjusted values of all 2 nd order elements X2 are increased by N2%, the adjusted values of all 3 rd order elements X3 are increased by N3%, …, and the adjusted values of all N th order elements Xn are increased by N N%, N1> N2> N3> … > N.
10. The method of claim 8, wherein the adjusted values of all 1-step elements X1 are M1% less than the original values, the adjusted values of all 2-step elements X2 are M2% less than the original values, the adjusted values of all 3-step elements X3 are M3% less than the original values, …, the adjusted values of all n-step elements Xn are Mn% less than the original values, and M1< M2< M3< … < Mn.
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