CN111667799A - Brightness compensation method and device - Google Patents
Brightness compensation method and device Download PDFInfo
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- CN111667799A CN111667799A CN202010509913.1A CN202010509913A CN111667799A CN 111667799 A CN111667799 A CN 111667799A CN 202010509913 A CN202010509913 A CN 202010509913A CN 111667799 A CN111667799 A CN 111667799A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The application provides a brightness compensation method and a device. The method is applied to a display panel, the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation method comprises the steps of controlling at least one pixel to emit light; when a plurality of pixels emit light, at least one pixel which does not emit light is arranged between two adjacent pixels which emit light. The luminance value of the pixel is calculated. And judging whether the brightness value is equal to a preset brightness value or not. And if the brightness value is not equal to the preset brightness value, compensating the corresponding pixel so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value. Light emission is performed by controlling at least one pixel. The problem that the calculated brightness value is inaccurate due to mutual interference among a plurality of adjacent luminous pixels is solved, so that the brightness value of the luminous pixels is accurately calculated, and the corresponding pixels are accurately judged and compensated.
Description
Technical Field
The application belongs to the technical field of electronic products, and particularly relates to a brightness compensation method and device.
Background
With the continuous development of electronic devices, electronic devices are now popular with users due to their portability and rich and varied operability. But at the same time, the expectations and requirements of users for electronic devices are also increasing. For example, when compensating for a display panel of an electronic device, each pixel is often not accurately compensated, resulting in poor brightness compensation.
Disclosure of Invention
In view of this, a first aspect of the present application provides a brightness compensation method applied to a display panel including a plurality of pixels arranged in an array, the brightness compensation method including:
controlling at least one of the pixels to emit light; when the plurality of pixels emit light, at least one non-light-emitting pixel is arranged between two adjacent light-emitting pixels;
calculating a luminance value of the pixel;
judging whether the brightness value is equal to a preset brightness value or not;
and if the brightness value is not equal to the preset brightness value, compensating the corresponding pixel so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
The brightness compensation method provided by the first aspect of the present application performs light emission by controlling at least one of the pixels. When only one pixel is controlled, the brightness value of the pixel can be accurately calculated, so that judgment and compensation can be performed. When a plurality of pixels are controlled, at least one non-luminous pixel is clamped between two adjacent luminous pixels, and even if the luminous pixels are arranged at intervals, the problem that the calculated brightness value is inaccurate due to mutual interference between the adjacent luminous pixels can be solved, so that the brightness value of the luminous pixel is accurately calculated, and the corresponding pixel is accurately judged and compensated.
The second aspect of the present application further provides a brightness compensation method applied to a display panel, where the display panel includes a plurality of pixels arranged in an array, and the brightness compensation method includes:
controlling a plurality of pixels to emit light, wherein the plurality of pixels emitting light include a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are sandwiched between each second pixel and the first pixel;
calculating an average value of luminance values of the plurality of pixels emitting light;
taking the average value as a brightness value of the first pixel;
judging whether the brightness value of the first pixel is equal to a preset brightness value or not;
and if the brightness value of the first pixel is not equal to the preset brightness value, compensating the first pixel so that the brightness value of the compensated first pixel is equal to the preset brightness value.
In the second aspect of the present application, when the plurality of pixels are controlled to emit light, the pixels adjacent to the first pixel may be controlled to emit light together, and then an average value of luminance values of the first pixel and the plurality of second pixels is calculated. At this time, the average value can be used as the brightness value of the first pixel, so that the problem of inaccurate calculated brightness value caused by mutual interference among a plurality of adjacent luminous pixels is reduced, and the accuracy of judgment and compensation is improved.
A third aspect of the present application provides a brightness compensation apparatus for a display panel, the display panel including a plurality of pixels arranged in an array, the brightness compensation apparatus comprising:
a control unit for controlling at least one of the pixels to emit light; when the plurality of pixels emit light, at least one non-light-emitting pixel is arranged between two adjacent light-emitting pixels;
a calculation unit for calculating a luminance value of the pixel;
a judging unit for judging whether the brightness value is equal to a preset brightness value;
and the compensation unit is used for compensating the corresponding pixel if the brightness value is not equal to the preset brightness value so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
According to the brightness compensation device provided by the third aspect of the application, by utilizing the mutual matching of the control unit, the calculation unit, the judgment unit and the compensation unit, the problem that the calculated brightness value is inaccurate due to mutual interference among a plurality of adjacent luminous pixels can be effectively solved, and then the pixels corresponding to compensation are accurately judged.
The fourth aspect of the present application further provides a brightness compensation apparatus applied to a display panel, where the display panel includes a plurality of pixels arranged in an array, and the brightness compensation apparatus includes:
a control unit for controlling light emission to the plurality of pixels; the plurality of pixels emitting light comprise a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are clamped between each second pixel and the first pixel;
a calculation unit configured to calculate an average value of luminance values of the plurality of pixels that emit light;
an assigning unit configured to use the average value as a luminance value of the first pixel;
a judging unit, configured to judge whether a luminance value of the first pixel is equal to a preset luminance value;
and the compensation unit is used for compensating the first pixel if the brightness value of the first pixel is not equal to the preset brightness value, so that the brightness value of the compensated first pixel is equal to the preset brightness value.
The brightness compensation device provided by the fourth aspect of the application can effectively reduce the problem that the calculated brightness value is inaccurate due to mutual interference among a plurality of adjacent luminous pixels through mutual matching of the control unit, the calculation unit, the assignment unit, the judgment unit and the compensation unit, and further improves the accuracy of judgment and compensation.
Drawings
In order to more clearly explain the technical solution in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.
Fig. 1 is a flowchart of a luminance compensation method according to an embodiment of the present application.
Fig. 2 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 3 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 4 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 5 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 6 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 7 is a flowchart of a luminance compensation method according to another embodiment of the present application.
Fig. 8 is an electrical schematic diagram of a luminance compensation apparatus according to an embodiment of the present disclosure.
Fig. 9 is a schematic electronic structure diagram of a luminance compensation apparatus according to another embodiment of the present application.
Fig. 10 is a schematic electronic structure diagram of a luminance compensation device according to another embodiment of the present application.
Fig. 11 is an electrical schematic diagram of a luminance compensation device according to another embodiment of the present application.
Fig. 12 is an electrical schematic diagram of a luminance compensation device according to another embodiment of the present application.
Description of reference numerals:
the device comprises a brightness compensation device-1, a control unit-10, a calculation unit-20, a judgment unit-30, a compensation unit-40, a grouping unit-50, an acquisition unit-60, a filtering unit-70, an edge detection unit-80 and an assignment unit-90.
Detailed Description
The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a luminance compensation method according to an embodiment of the present disclosure. The embodiment provides a brightness compensation method, which is applied to a display panel, wherein the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation method comprises S100, S200, S300 and S400. The details of S100, S200, S300, and S400 are as follows.
And S100, controlling at least one pixel to emit light. When the plurality of pixels emit light, at least one non-light-emitting pixel is sandwiched between two adjacent light-emitting pixels.
And S200, calculating the brightness value of the pixel.
S300, judging whether the brightness value is equal to a preset brightness value or not.
S400, if the brightness value is not equal to the preset brightness value, compensating the corresponding pixel to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
The Display panel mentioned above in the present application includes, but is not limited to, an Organic Light-Emitting Diode (OLED) Display panel or a Liquid Crystal Display (LCD) Display panel. The display panel mainly plays a display role in electronic equipment, and comprises a plurality of pixels arranged in an array, wherein each pixel can emit visible light with various colors, and a frame of image is displayed through the cooperation of the plurality of pixels. However, in the manufacturing process of the display panel, due to various reasons of the display panel, the brightness of different pixels is different under the same gray scale, thereby causing the problem of uneven brightness of the display. It is therefore often necessary to compensate for the pixels of the display panel.
In the related art, a high-definition camera is usually used to capture luminance values of different gray scales, and an algorithm is used to process the captured image to compensate the luminance brightness of the pixel points in the area with the luminance difference, so as to eliminate the phenomenon of uneven luminance of the display. However, as the pixels are more and more dense, in the process of taking a picture by using a high-definition camera, the light sensing chip of the camera is difficult to be completely parallel to the display panel, so that a part of pixels are gathered on the light sensing chip of the camera, the brightness value of each pixel cannot be accurately obtained, and the judgment and compensation cannot be accurately performed.
The brightness compensation method provided by the application can control at least one pixel to emit light. When only one pixel is controlled, the brightness value of the pixel can be accurately calculated, the problem that the calculated brightness value is inaccurate due to mutual interference among a plurality of luminous pixels is thoroughly solved, and therefore judgment and compensation are carried out. When a plurality of pixels are controlled, at least one non-luminous pixel can be clamped between two adjacent luminous pixels, even if the luminous pixels are arranged at intervals, partial pixels can be prevented from being gathered on the photosensitive chip, the problem that the calculated brightness value is inaccurate due to mutual interference between the adjacent luminous pixels is solved, the brightness value of the luminous pixel is accurately calculated, and the corresponding pixel is accurately judged and compensated.
Alternatively, calculating the luminance value of the pixel may be understood as calculating the luminance value of the pixel emitting light. And compensating the corresponding said pixel may be understood as compensating for a pixel having a luminance value not equal to a preset luminance value.
The present application can control a plurality of pixels to emit light, and the present application will next describe several embodiments of controlling the plurality of pixels to emit light.
Referring to fig. 2, fig. 2 is a flowchart illustrating a luminance compensation method according to another embodiment of the present disclosure. In this embodiment, S100 "controlling at least one of the pixels to emit light" includes S110 and S120. The details of S110 and S120 are as follows.
S110, dividing the plurality of pixels into N pixel groups, where each pixel group includes a plurality of pixels, at least one non-light-emitting pixel is sandwiched between two adjacent light-emitting pixels, and N is a positive integer greater than 1.
And S120, controlling the pixels in the first pixel group to emit light.
In one embodiment of the present application, the plurality of pixels may be divided into N pixel groups, each of the pixel groups may include a plurality of the pixels, and at least one non-light-emitting pixel may be interposed between two adjacent light-emitting pixels. The description will now be made by way of example. For example, the display panel includes 12 pixels (in this embodiment, only 12 pixels are used as an example, and actually, the number of the pixels may be much larger than 12), the 12 pixels are divided into 4 pixel groups, where 1 pixel group includes the 1 st, 3 th, and 5 th pixels of the first row, 1 pixel group includes the 2 nd, 4 th, and 6 th pixels of the first row, 1 pixel group includes the 1 st, 3 th, and 5 th pixels of the second row, and 1 pixel group includes the 2 nd, 4 th, and 6 th pixels of the second row. The method and the device can control 1 pixel group to emit light, and at the moment, three pixels in each pixel group are arranged at intervals, so that the brightness value of each pixel can be calculated accurately in the follow-up process.
Alternatively, the first pixel group mentioned in this embodiment mode does not refer to the first pixel value in the physical sense, but refers to the first pixel group in the time series. For example, the pixel may be any one of the above-mentioned 4 pixel groups, and the application is not limited herein.
Referring to fig. 3, fig. 3 is a flowchart illustrating a luminance compensation method according to another embodiment of the present disclosure. In this embodiment, after S200 "calculating the brightness value of the pixel", S210, S220, and S230 are also included. The details of S210, S220, and S230 are as follows.
S210, judging whether the pixel in the Nth pixel group finishes emitting light.
And S220, if not, controlling the pixels in the next pixel group to emit light, and calculating the brightness values of the pixels.
And S230, if yes, acquiring brightness values of the plurality of pixels.
Subsequently, the present embodiment may determine whether the pixel in the nth pixel group has finished emitting light. If not, controlling the pixels in the next pixel group to emit light, calculating the brightness value of the pixels until the pixels in the Nth pixel group finish emitting light, and acquiring the brightness values of the pixels. The description will be continued with an example in which the above-described display panel includes 12 pixels. After the first pixel group emits light and the luminance value of the pixel is calculated, it is determined whether the pixel in the 4 th pixel group has completed emitting light. If not, controlling the pixels of the second pixel group to emit light, and calculating the brightness value of the pixels. If the pixels of the fourth pixel group have finished emitting light and calculating, the brightness values of all 12 pixels are obtained. Therefore, the average value of the brightness values of each pixel of 12 pixels is real and reliable, and a good basis is provided for subsequent judgment and compensation.
Referring to fig. 4, fig. 4 is a flowchart illustrating a luminance compensation method according to another embodiment of the present disclosure. In this embodiment, S100 "controlling at least one of the pixels to emit light" includes S130 and S140. The details of S130 and S140 are as follows.
And S130, dividing the plurality of pixels into a plurality of pixel groups, wherein each pixel group comprises m × n pixels arranged in an array, and m and n are positive integers greater than 1.
And S140, controlling the pixels in the p-th row and the q-th column in each pixel group to emit light. Wherein p is less than or equal to m, and q is less than or equal to n.
In another embodiment of the present application, the plurality of pixels may be divided into a plurality of pixel groups, and each pixel group includes m × n pixels arranged in an array, where m and n are positive integers greater than 1. And then controlling the pixel of the p-th row and the q-th column in each pixel group to emit light. Wherein p is less than or equal to m, and q is less than or equal to n. The description will now be made by way of example. For example, the display panel includes 20 pixels arranged in 5 × 4 arrays (in this embodiment, only 20 pixels are used for example, and actually, the number of pixels may be much larger than 20), the 20 pixels are divided into 4 pixels arranged in 4 × 2 arrays, and the following 4 pixels are divided into 2 pixel groups of 1 × 2. The 2 pixel groups 1 × 2 can also be considered as 2 × 2 pixel groups, where there are two pixels actually present in the first row, the first column, and the second row, and there are two dummy pixels in the first row, the second column, and the second row. In this case, the pixels in the p-th row and the q-th column in each pixel may be controlled to emit light, for example, the pixel in the first column in each pixel group is controlled to emit light, and in the 2 pixel groups of 1 × 2, the pixel in the first column in the first row may emit light because the true pixel exists. In this way, the pixels emitting light can also be controlled to be arranged at intervals, so that the luminance value of each pixel can be accurately calculated later.
Referring to fig. 5, fig. 5 is a flowchart illustrating a luminance compensation method according to another embodiment of the present application. In this embodiment, after S200 "calculating the luminance value of the pixel", S240, S250, and S260 are further included. The details of S240, S250, and S260 are as follows.
And S240, judging whether all the pixels in each pixel group finish light emitting.
And S250, if not, controlling the next pixel in each pixel group to emit light, and calculating the brightness value of the pixel.
And S260, if yes, acquiring brightness values of the plurality of pixels.
Then, the present embodiment may determine whether all the pixels in each pixel group have finished emitting light, and if not, control the next pixel in each pixel group to emit light, and calculate the brightness value of the pixel. Knowing that all pixels in each pixel group have finished emitting light, the luminance values of the plurality of pixels are obtained. The description will be continued with an example in which the above-described display panel includes 20 pixels. After the pixels in the first row and the first column in each pixel emit light and the brightness value is calculated, whether all the pixels in each pixel group emit light or not is judged. If not, the pixels in the first row and the second column are continuously controlled to emit light. At this time, 2 pixel groups 1 × 2 do not emit light because the second row is a dummy pixel in the first row. And then the luminance value of the pixel that emits light is calculated. If the pixels in each pixel group complete the lighting and calculation, the brightness values of all 20 pixels are obtained. Therefore, the average value of the brightness values of each pixel of 20 pixels is real and reliable, and a good basis is provided for subsequent judgment and compensation.
Referring to fig. 6, fig. 6 is a flowchart illustrating a luminance compensation method according to another embodiment of the present disclosure. In this embodiment, S150 and S160 are further included before S200 "calculating the luminance value of the pixel". The details of S150 and S160 are as follows.
And S150, removing noise in the pixel.
And S160, detecting the position of the pixel.
The present embodiment may also remove noise, such as environmental noise, machine noise, etc., in the pixel before calculating the luminance value of the pixel that emits light. The position of the pixel may then also be detected to determine the position of the pixel in the display panel, which may subsequently allow the user to know the specific position of the compensated pixel. Alternatively, a filtering algorithm may be used to remove noise in the pixels. Alternatively, the position of the pixel may be detected using an edge detection algorithm.
The above mentioned matters all mention that one pixel is controlled to emit light or a plurality of pixels arranged at intervals are controlled to emit light, so as to solve the problem that the calculated brightness value is inaccurate due to mutual interference between a plurality of adjacent light-emitting pixels. The present application also provides another solution. Referring to fig. 7, fig. 7 is a flowchart illustrating a luminance compensation method according to another embodiment of the present application. The embodiment provides a brightness compensation method, which is applied to a display panel, wherein the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation method comprises S500, S600, S700, S800 and S900. The details of S500, S600, S700, S800, and S900 are as follows.
S500, controlling the plurality of pixels to emit light, where the plurality of pixels emitting light include a first pixel and a plurality of second pixels, the plurality of second pixels are disposed corresponding to a periphery of the first pixel, and zero pixels are interposed between each of the second pixels and the first pixel.
S600, calculating the average value of the luminance values of the plurality of luminous pixels.
And S700, taking the average value as the brightness value of the first pixel.
S800, judging whether the brightness value of the first pixel is equal to a preset brightness value or not.
S900, if the brightness value of the first pixel is not equal to the preset brightness value, compensating the first pixel so that the brightness value of the compensated first pixel is equal to the preset brightness value.
In the present embodiment, when controlling the light emission of a plurality of pixels, it is not necessary to arrange the plurality of pixels at intervals as described above, but the present application recognizes that a plurality of second pixels are arranged in close proximity, that is, zero pixels are interposed between each of the second pixels and the first pixels. For example, in 4 pixels arranged in a 2 x 2 array, the first pixel may be a first row and a first column of pixels, and the rest are second pixels. Or in 9 pixels arranged in a 3 x 3 array, the first pixel may be rate-limiting for the second row and the second column, and the rest are the second pixels.
However, in the present embodiment, it is not necessary to calculate the luminance value of each pixel, but only an average value of the luminance values of the plurality of pixels emitting light is calculated, and the average value is equivalent to the luminance value of the first pixel, and at this time, the luminance value of the first pixel is considered to be the average value, so that the problem that the luminance value of the first pixel is not accurately calculated due to mutual interference between a plurality of adjacent light-emitting pixels can be reduced, and the accuracy of determination and compensation can be improved.
Referring to fig. 8, fig. 8 is an electrical schematic diagram of a luminance compensation device according to an embodiment of the present disclosure. The embodiment provides a brightness compensation device, which is applied to a display panel, wherein the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation device comprises a control unit, a calculation unit, a judgment unit and a compensation unit. The control unit is used for controlling at least one pixel to emit light. When the plurality of pixels emit light, at least one non-light-emitting pixel is sandwiched between two adjacent light-emitting pixels. The computing unit is used for computing the brightness value of the pixel. The judging unit is used for judging whether the brightness value is equal to a preset brightness value or not. And the compensation unit is used for compensating the corresponding pixel if the brightness value is not equal to the preset brightness value so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
In the luminance compensation device according to this embodiment, at least one of the pixels is controlled by the control unit to emit light. When the plurality of pixels emit light, at least one non-light-emitting pixel is sandwiched between two adjacent light-emitting pixels. The luminance value of the pixel is calculated by a calculation unit. And judging whether the brightness value is equal to a preset brightness value or not by using a judging unit. The compensation unit is used for compensating the pixels with the brightness values not equal to the preset brightness value, so that the problem that the calculated brightness value is inaccurate due to mutual interference among a plurality of adjacent luminous pixels can be effectively solved, and the pixels corresponding to compensation can be accurately judged.
Referring to fig. 9, fig. 9 is an electrical schematic diagram of a luminance compensation device according to another embodiment of the present disclosure. In this embodiment, the luminance compensation device further includes: the grouping unit is used for dividing the pixels into a plurality of pixel groups, each pixel group comprises m × n pixels which are arrayed, and m and n are positive integers larger than 1. The control unit is also used for controlling the pixels in the p-th row and the q-th column in each pixel group to emit light. Wherein p is less than or equal to m, and q is less than or equal to n. This embodiment can also efficiently group them by using a grouping unit. The present embodiment provides a grouping manner, and for specific content, reference is made to the description of the method, which is not described herein again.
Referring to fig. 10, fig. 10 is a schematic view of an electronic structure of a luminance compensation device according to another embodiment of the present application. In this embodiment, the luminance compensation apparatus further includes an obtaining unit, wherein the determining unit is further configured to determine whether all the pixels in each of the pixel groups have finished emitting light. If not, the control unit is further configured to control a next pixel in each pixel group to emit light, and the calculation unit is further configured to calculate a luminance value of the pixel. If yes, the obtaining unit is used for obtaining the brightness values of the plurality of pixels. In this embodiment, all pixels can be obtained by performing light emission, calculation, and acquisition in the above-described grouping method.
Referring to fig. 9 again, in this embodiment, the luminance compensation apparatus further includes a grouping unit. The grouping unit is used for dividing the plurality of pixels into N pixel groups, each pixel group comprises a plurality of pixels, at least one non-luminous pixel is clamped between two adjacent luminous pixels, and N is a positive integer larger than 1. The control unit is further configured to control the pixels in the first pixel group to emit light. The present embodiment provides another grouping manner, and for the specific content, reference is made to the description of the method, which is not described herein again.
Referring to fig. 10 again, in this embodiment, the luminance compensation apparatus further includes an obtaining unit, wherein the determining unit is further configured to determine whether the pixel in the nth pixel group has finished emitting light. If not, the control unit is further configured to control the pixel in the next pixel group to emit light, and the calculation unit is further configured to calculate the luminance value of the pixel. If yes, the obtaining unit is used for obtaining the brightness values of the plurality of pixels. In this embodiment, all pixels can be obtained by performing light emission, calculation, and acquisition in the above-described grouping method.
Referring to fig. 11, fig. 11 is an electrical schematic diagram of a luminance compensation device according to another embodiment of the present application. In this embodiment, the luminance compensation apparatus further includes a filtering unit and an edge detection unit. Wherein the filtering unit is used for removing noise in the pixel. The edge detection unit is used for detecting the position of the pixel. The present embodiment can also detect the position of the pixel by the edge detection unit by removing noise in the pixel by the filtering unit. Alternatively, a filtering algorithm may be used to remove noise in the pixels. Alternatively, the position of the pixel may be detected using an edge detection algorithm.
Referring to fig. 12, fig. 12 is an electrical schematic diagram of a luminance compensation device according to another embodiment of the present disclosure. The embodiment provides a brightness compensation device, which is applied to a display panel, wherein the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation device comprises a control unit, a calculation unit, an assignment unit, a judgment unit and a compensation unit. Wherein the control unit is used for controlling the plurality of pixels to emit light. The plurality of pixels emitting light include a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are arranged between each second pixel and the first pixel. The calculation unit is configured to calculate an average value of luminance values of the plurality of pixels that emit light. The assignment unit is configured to use the average value as a luminance value of the first pixel. The judging unit is used for judging whether the brightness value of the first pixel is equal to a preset brightness value or not. And the compensation unit is used for compensating the first pixel if the brightness value of the first pixel is not equal to the preset brightness value, so that the brightness value of the compensated first pixel is equal to the preset brightness value.
In the luminance compensation device according to the present embodiment, the control unit controls the plurality of pixels to emit light. The plurality of pixels emitting light include a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are arranged between each second pixel and the first pixel. An average value of luminance values of the plurality of pixels that emit light is calculated with a calculation unit. And using an assignment unit to use the average value as the brightness value of the first pixel. The judging unit is used for judging whether the brightness value of the first pixel is equal to a preset brightness value or not. The compensation unit is used for compensating the first pixel with the brightness value not equal to the preset brightness value, so that the problem of inaccurate calculated brightness value caused by mutual interference among a plurality of adjacent luminous pixels can be effectively solved, and the accuracy of judgment and compensation is further improved.
The foregoing detailed description has provided for the embodiments of the present application, and the principles and embodiments of the present application have been presented herein for purposes of illustration and description only and to facilitate understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (14)
1. A brightness compensation method is applied to a display panel, the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation method comprises the following steps:
controlling at least one of the pixels to emit light; when the plurality of pixels emit light, at least one non-light-emitting pixel is arranged between two adjacent light-emitting pixels;
calculating a luminance value of the pixel;
judging whether the brightness value is equal to a preset brightness value or not;
and if the brightness value is not equal to the preset brightness value, compensating the corresponding pixel so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
2. The luminance compensation method as claimed in claim 1, wherein the "controlling at least one of the pixels to emit light" includes:
dividing the plurality of pixels into a plurality of pixel groups, wherein each pixel group comprises m × n pixels arranged in an array, and m and n are positive integers greater than 1;
controlling the pixels of the p-th row and the q-th column in each pixel group to emit light; wherein p is less than or equal to m, and q is less than or equal to n.
3. The luminance compensation method as set forth in claim 2, further comprising, after "calculating the luminance value of the pixel":
judging whether all the pixels in each pixel group finish light emitting or not;
if not, controlling the next pixel in each pixel group to emit light, and calculating the brightness value of the pixel;
and if so, acquiring the brightness values of the plurality of pixels.
4. The luminance compensation method as claimed in claim 1, wherein the "controlling at least one of the pixels to emit light" includes:
dividing the plurality of pixels into N pixel groups, wherein each pixel group comprises a plurality of pixels, at least one non-luminous pixel is clamped between two adjacent luminous pixels, and N is a positive integer greater than 1;
and controlling the pixels in the first pixel group to emit light.
5. The luminance compensation method as set forth in claim 4, further comprising, after "calculating the luminance value of the pixel":
judging whether the pixels in the Nth pixel group finish light emitting or not;
if not, controlling the pixels in the next pixel group to emit light, and calculating the brightness values of the pixels;
and if so, acquiring the brightness values of the plurality of pixels.
6. The luminance compensation method as set forth in claim 1, further comprising, before "calculating the luminance value of the pixel":
removing noise in the pixel;
the position of the pixel is detected.
7. A brightness compensation method is applied to a display panel, the display panel comprises a plurality of pixels arranged in an array, and the brightness compensation method comprises the following steps:
controlling a plurality of pixels to emit light, wherein the plurality of pixels emitting light include a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are sandwiched between each second pixel and the first pixel;
calculating an average value of luminance values of the plurality of pixels emitting light;
taking the average value as a brightness value of the first pixel;
judging whether the brightness value of the first pixel is equal to a preset brightness value or not;
and if the brightness value of the first pixel is not equal to the preset brightness value, compensating the first pixel so that the brightness value of the compensated first pixel is equal to the preset brightness value.
8. A luminance compensation apparatus applied to a display panel including a plurality of pixels arranged in an array, the luminance compensation apparatus comprising:
a control unit for controlling at least one of the pixels to emit light; when the plurality of pixels emit light, at least one non-light-emitting pixel is arranged between two adjacent light-emitting pixels;
a calculation unit for calculating a luminance value of the pixel;
a judging unit for judging whether the brightness value is equal to a preset brightness value;
and the compensation unit is used for compensating the corresponding pixel if the brightness value is not equal to the preset brightness value so as to enable the brightness value of the corresponding pixel to be equal to the preset brightness value.
9. The luminance compensation apparatus as claimed in claim 8, wherein the luminance compensation apparatus further comprises:
a grouping unit configured to divide the plurality of pixels into a plurality of pixel groups, each pixel group including m × n pixels arranged in an array, where m and n are positive integers greater than 1;
the control unit is also used for controlling the pixels in the p-th row and the q-th column in each pixel group to emit light; wherein p is less than or equal to m, and q is less than or equal to n.
10. The luminance compensation apparatus as claimed in claim 9, wherein the luminance compensation apparatus further comprises an acquisition unit, wherein:
the judging unit is further used for judging whether all the pixels in each pixel group finish light emitting or not;
if not, the control unit is further configured to control a next pixel in each pixel group to emit light, and the calculation unit is further configured to calculate a luminance value of the pixel;
if yes, the obtaining unit is used for obtaining the brightness values of the plurality of pixels.
11. The luminance compensation apparatus as claimed in claim 8, wherein the luminance compensation apparatus further comprises:
the grouping unit is used for dividing the plurality of pixels into N pixel groups, each pixel group comprises a plurality of pixels, at least one non-luminous pixel is clamped between two adjacent luminous pixels, and N is a positive integer greater than 1;
the control unit is further configured to control the pixels in the first pixel group to emit light.
12. The luminance compensation apparatus of claim 11, further comprising an acquisition unit, wherein:
the judging unit is also used for judging whether the pixels in the Nth pixel group finish light emitting or not;
if not, the control unit is further configured to control the pixel in the next pixel group to emit light, and the calculation unit is further configured to calculate a brightness value of the pixel;
if yes, the obtaining unit is used for obtaining the brightness values of the plurality of pixels.
13. The luminance compensation apparatus as claimed in claim 8, wherein the luminance compensation apparatus further comprises:
a filtering unit for removing noise in the pixels;
and the edge detection unit is used for detecting the position of the pixel.
14. A luminance compensation apparatus applied to a display panel including a plurality of pixels arranged in an array, the luminance compensation apparatus comprising:
a control unit for controlling light emission to the plurality of pixels; the plurality of pixels emitting light comprise a first pixel and a plurality of second pixels, the plurality of second pixels are arranged corresponding to the periphery of the first pixel, and zero pixels are clamped between each second pixel and the first pixel;
a calculation unit configured to calculate an average value of luminance values of the plurality of pixels that emit light;
an assigning unit configured to use the average value as a luminance value of the first pixel;
a judging unit, configured to judge whether a luminance value of the first pixel is equal to a preset luminance value;
and the compensation unit is used for compensating the first pixel if the brightness value of the first pixel is not equal to the preset brightness value, so that the brightness value of the compensated first pixel is equal to the preset brightness value.
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