WO2017107264A1 - Dumura系统中亮度的补偿方法、系统及显示面板 - Google Patents

Dumura系统中亮度的补偿方法、系统及显示面板 Download PDF

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Publication number
WO2017107264A1
WO2017107264A1 PCT/CN2016/070901 CN2016070901W WO2017107264A1 WO 2017107264 A1 WO2017107264 A1 WO 2017107264A1 CN 2016070901 W CN2016070901 W CN 2016070901W WO 2017107264 A1 WO2017107264 A1 WO 2017107264A1
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Prior art keywords
brightness
angle
value
relationship
display panel
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Ceased
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PCT/CN2016/070901
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English (en)
French (fr)
Inventor
郭平昇
朱立伟
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/029,086 priority Critical patent/US10223983B2/en
Publication of WO2017107264A1 publication Critical patent/WO2017107264A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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
    • G09G3/36—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 using liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • G09G2320/068—Adjustment of display parameters for control of viewing angle adjustment
    • 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
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Definitions

  • the invention relates to the field of display, in particular to a method, a system and a display panel for compensating brightness in a Dumura system.
  • LCD Chinese: liquid crystal display
  • LCD Chinese full name: Liquid Crystal Display
  • the existing LCD screen's Dumura system compensates for brightness.
  • the Dumura system usually compensates according to the brightness of the image taken by the camera.
  • the brightness deviation may occur due to the angle, and the 50-inch LCD is used.
  • the brightness of the two sides (shown in the dotted ellipse of Figure 1) will have about 6% attenuation, as shown in Figure 1, for the LCD screen, the brightness of the two sides will be dark, the LCD screen size The larger the brightness, the more the brightness decays.
  • a compensation method for brightness in a Dumura system modifies the brightness value according to the deviation angle, thereby reducing the influence of the angle on the brightness attenuation, so that the compensation effect is good.
  • a method of compensating for brightness in a Dumura system comprising:
  • Et dB, ⁇ ° is the brightness value of the corrected pixel point
  • E dB, ⁇ ° is the brightness value of the pixel before the modification
  • Z is the horizontal distance from the display panel to the midpoint of the camera lens
  • Ls is the pixel point Radiation value
  • a s is the area occupied by the pixel on the display panel
  • the display panel is brightness compensated according to the brightness value of the corrected pixel.
  • the relationship between the angle and the brightness includes:
  • the relationship between the angle and the brightness includes the angle and the brightness list
  • the relationship between the pre-stored angle and the brightness is obtained.
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is specific, and includes:
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is queried with the brightness list at a pre-stored angle;
  • f( ⁇ 1) and f corresponding to the two angles ⁇ 1, ⁇ 2 adjacent to the ⁇ are queried in the pre-stored angle and brightness list ( ⁇ 2), f( ⁇ ) is calculated by the internal difference method.
  • the relationship between the angle and the brightness includes an angle and a brightness function
  • the relationship is obtained according to the pre-stored angle and brightness relationship.
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is specific, and includes:
  • the luminance relationship value f( ⁇ ) corresponding to the ⁇ is calculated according to a pre-stored angle and a luminance function.
  • a Dumura system comprising:
  • An angle acquisition unit for acquiring a pixel point and a point in the camera lens when the camera is fixed The angle ⁇ of the flat line;
  • a calculating unit configured to acquire a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to a pre-stored angle and brightness relationship;
  • a correction unit configured to calculate a brightness value of the corrected pixel point according to the f( ⁇ ) and a preset formula, where the preset formula includes:
  • Et dB, ⁇ ° is the brightness value of the corrected pixel point
  • E dB, ⁇ ° is the brightness value of the pixel before the modification
  • Z is the horizontal distance from the display panel to the midpoint of the camera lens
  • Ls is the pixel point Radiation value
  • a s is the area occupied by the pixel on the display panel
  • the compensation unit is configured to perform brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the relationship between the angle and the brightness specifically includes:
  • the calculating unit when the angle and brightness relationship includes an angle and a brightness list, is specifically configured to:
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is queried with the brightness list at a pre-stored angle;
  • f( ⁇ 1) and f corresponding to the two angles ⁇ 1, ⁇ 2 adjacent to the ⁇ are queried in the pre-stored angle and brightness list ( ⁇ 2), f( ⁇ ) is calculated by the internal difference method.
  • the calculating unit is specifically configured to: when the angle and brightness relationship includes an angle and a brightness function,
  • the luminance relationship value f( ⁇ ) corresponding to the ⁇ is calculated according to a pre-stored angle and a luminance function.
  • a display panel comprising Dumura provided by the second aspect.
  • the system the first alternative of the second aspect, the second alternative of the second aspect, or the third alternative of the second aspect.
  • a display device comprising a display panel, the Dumura system provided by the second aspect of the display panel, the first option of the second aspect, and the second option of the second aspect A third option in the solution or the second aspect.
  • each of the above embodiments reduces the influence of ⁇ on the luminance attenuation value by dividing the luminance value by f( ⁇ ), and experimentally proves that the present invention is adopted.
  • the technical solution can reduce the influence of the viewing angle on the brightness and reduce the influence of cos 4 ⁇ on the brightness, so the brightness attenuation deviation is significantly reduced, so that it has the advantage of small luminance attenuation.
  • FIG. 1 is a schematic diagram showing brightness display of a display panel in the prior art
  • FIG. 2 is a flow chart of a method for compensating for brightness in a Dumura system according to a first preferred embodiment of the present invention
  • FIG. 3 is a schematic diagram of parameters and pixel distribution in a first preferred embodiment of the present invention.
  • FIG. 4 is a flow chart of a method for compensating for brightness in a Dumura system according to a second preferred embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for compensating brightness in a Dumura system according to a third preferred embodiment of the present invention.
  • FIG. 6 is a structural diagram of a brightness compensation system in a Dumura system according to a fourth preferred embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
  • FIG. 2 illustrates a method for compensating brightness in a Dumura system according to a first preferred embodiment of the present invention.
  • the method is implemented by a display panel or a display.
  • the method is as shown in FIG. 2, and includes the following steps:
  • Step S201 when the camera is fixed, obtaining an angle ⁇ between the pixel point and the midpoint of the camera lens and the horizontal line;
  • ⁇ in the above step S201 is as shown in FIG. 3, and the angle of ⁇ in FIG. 3 is exemplified by 10°. In practical applications, the angle of ⁇ may be other values, for example, 5°, 6°, or the like.
  • Step S202 obtaining a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to a pre-stored angle and brightness relationship;
  • the relationship between the angle and the brightness in the above step S202 can be expressed in various forms.
  • the specific embodiment of the present invention does not limit the specific expression of the relationship between the angle and the brightness.
  • the relationship between the angle and the brightness may be a function of the relationship between the angle and the brightness.
  • other implementation manners may also be used, such as establishing a relationship between the angle and the brightness relationship to represent the relationship between the angle and the brightness.
  • other forms of expression can also be used. I won't go into details here.
  • Step S203 calculating a brightness value of the corrected pixel point according to f( ⁇ ) and a preset formula
  • Et dB, ⁇ ° can be the brightness value of the corrected pixel point
  • E dB, ⁇ ° can be the brightness value of the pixel before modification
  • Z can be the horizontal distance from the display panel to the midpoint of the camera lens
  • ⁇ can be a pixel The angle between the point and the horizontal line of the camera lens
  • Ls can be the radiation value of the pixel
  • a s can be the area occupied by the pixel on the display panel.
  • Step S204 Perform brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the compensation method of the above step S204 can adopt the prior art method, and the compensation method is not limited by the first preferred embodiment of the present invention.
  • the brightness value of the pixel is E dB.
  • ⁇ ° is proportional to cos 4 ⁇ according to the meaning of the above formula. It can be known from experience that for a display panel, it is impossible for all pixel points to have a value of ⁇ of 0, especially for The edge position of the large-screen liquid crystal panel, the ⁇ can reach 10° or more, and 10° is taken as an example. When it is 10°, the attenuation of the luminance is about 6%, and the brightness is performed according to E dB, ⁇ ° .
  • the first preferred embodiment of the present invention divides the luminance value by f( ⁇ ). Decrease the influence of ⁇ on the brightness attenuation value, specifically, compensate the brightness of different viewing angles by f( ⁇ ), and reduce the influence of cos 4 ⁇ on the brightness attenuation, and prove by experiment that the first invention is adopted. After the adjustment of the mode of the preferred embodiment, the luminance attenuation deviation is significantly reduced, so that it has the advantage of small luminance degradation.
  • FIG. 4 shows a method for compensating the brightness of the Dumura system according to the second preferred embodiment of the present invention.
  • the method is implemented by a display panel or a display.
  • the implementation scenario of the second preferred embodiment of the present invention may be
  • the angle and the brightness list are stored in the display panel.
  • the angle and the brightness list may be obtained by: capturing the image at different positions (ie, different angles) at the same position of the display panel to obtain the same position at different angles.
  • the mapped value of the upper angle and the brightness is recorded to form a list of angles and luminances.
  • the method is as shown in FIG. 4 and includes the following steps:
  • Step S401 when the camera is fixed, obtaining an angle ⁇ between the pixel point and the midpoint of the camera lens and the horizontal line;
  • ⁇ in the above step S401 is as shown in FIG. 3, and the angle of ⁇ in FIG. 3 is exemplified by 10°. In practical applications, the angle of ⁇ may be other values, for example, 5°, 6°, or the like.
  • Step S402 obtaining a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to the pre-stored angle and the brightness list;
  • the brightness corresponding to the ⁇ is obtained according to the pre-stored angle and the brightness list.
  • the system value f( ⁇ ) may specifically include:
  • the f( ⁇ ) corresponding to the ⁇ is queried with the brightness list at a pre-stored angle
  • f( ⁇ 1) and f( ⁇ 2) corresponding to the two angles ⁇ 1, ⁇ 2 adjacent to the ⁇ are queried in the pre-stored angle and the illuminance list.
  • f( ⁇ ) is calculated by the internal difference method.
  • the above method of calculating f( ⁇ ) by the internal difference method can be calculated by various methods, for example, by means of the mean difference, for example:
  • f( ⁇ ) can also be obtained by other internal difference methods, and the second preferred embodiment of the present invention does not limit the specific implementation form of the internal difference method described above.
  • Step S403 calculating a brightness value of the corrected pixel point according to f( ⁇ ) and a preset formula
  • Et dB, ⁇ ° can be the brightness value of the corrected pixel point
  • E dB, ⁇ ° can be the brightness value of the pixel before modification
  • Z can be the horizontal distance from the display panel to the midpoint of the camera lens
  • ⁇ can be a pixel
  • the point is the angle between the point and the horizontal line of the camera lens
  • Ls can be the radiation value of the pixel
  • a s can be the area occupied by the pixel on the display panel.
  • Step S404 performing brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the compensation method of the above step S404 can adopt the prior art method, and the compensation method of the first preferred embodiment of the present invention is not limited.
  • the brightness value of the pixel is E dB.
  • ⁇ ° is proportional to cos 4 ⁇ according to the meaning of the above formula. It can be known from experience that for a display panel, it is impossible for all pixel points to have a value of ⁇ of 0, especially for The edge position of the large-screen liquid crystal panel, the ⁇ can reach 10° or more, and 10° is taken as an example. When it is 10°, the attenuation of the luminance is about 6%, and the brightness is performed according to E dB, ⁇ ° .
  • the second preferred embodiment of the present invention divides the brightness value by f( ⁇ ). The effect of ⁇ on the luminance attenuation value is reduced, and it is proved by experiments that after the adjustment according to the second preferred embodiment of the present invention, the luminance attenuation deviation is significantly reduced, so that the luminance attenuation is small. point.
  • FIG. 5 is a method for compensating the brightness of the Dumura system according to the third preferred embodiment of the present invention.
  • the method is implemented by a display panel or a display.
  • the implementation scenario of the third preferred embodiment of the present invention may be
  • the angle and brightness function are stored in the display panel.
  • the angle and the brightness function can be obtained by specifically: the camera takes images at different positions (ie, different angles) at the same position of the display panel, and obtains the same position at different angles.
  • the map value of the upper angle and the brightness is fitted to the curve, and the expression of the curve, that is, the angle and the brightness function, is obtained.
  • the method is as shown in FIG. 5 and includes the following steps:
  • Step S501 when the camera is fixed, obtaining an angle ⁇ between the pixel point and the midpoint of the camera lens and the horizontal line;
  • ⁇ in the above step S501 is as shown in FIG. 3, and the angle of ⁇ in FIG. 3 is exemplified by 10°. In practical applications, the angle of ⁇ may be other values, for example, 5°, 6°, or the like.
  • Step S502 calculating a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to a pre-stored angle and a brightness function;
  • Step S503 calculating a brightness value of the corrected pixel point according to f( ⁇ ) and a preset formula
  • Et dB, ⁇ ° can be the brightness value of the corrected pixel point
  • E dB, ⁇ ° can be the brightness value of the pixel before modification
  • Z can be the horizontal distance from the display panel to the midpoint of the camera lens
  • ⁇ can be a pixel
  • the point is the angle between the point and the horizontal line of the camera lens
  • Ls can be the radiation value of the pixel
  • a s can be the area occupied by the pixel on the display panel.
  • Step S504 Perform brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the compensation method of the above step S504 can adopt the prior art method, and the compensation method is not limited in the first preferred embodiment of the present invention.
  • the technical effect achieved by the third preferred embodiment of the present invention is illustrated by the working principle of the third preferred embodiment of the present invention.
  • the brightness value of the pixel is E dB.
  • ⁇ ° is proportional to cos 4 ⁇ according to the meaning of the above formula. It can be known from experience that for a display panel, it is impossible for all pixel points to have a value of ⁇ of 0, especially for The edge position of the large-screen liquid crystal panel, the ⁇ can reach 10° or more, and 10° is taken as an example. When it is 10°, the attenuation of the luminance is about 6%, and the brightness is performed according to E dB, ⁇ ° .
  • the third preferred embodiment of the present invention divides the luminance value by f( ⁇ ). Decrease the influence of ⁇ on the brightness attenuation value, specifically, compensate the brightness of different viewing angles by f( ⁇ ), and reduce the influence of cos 4 ⁇ on the brightness attenuation, and prove by experiment that the third method of the invention is adopted. After the adjustment of the mode of the preferred embodiment, the luminance attenuation deviation is significantly reduced, so that it has the advantage of small luminance degradation.
  • FIG. 6 a Dumura system according to a fourth preferred embodiment of the present invention is shown in FIG. 6. The system is shown in FIG. 6.
  • An angle obtaining unit 601 configured to acquire an angle ⁇ between a pixel point and a point line of the camera lens and a horizontal line when the camera is fixed;
  • ⁇ in the above-described angle acquisition unit 601 is as shown in FIG. 3, and the angle of ⁇ in FIG. 3 is exemplified by 10°. In practical applications, the angle of ⁇ may be other values, such as 5°, 6°, and the like.
  • the calculating unit 602 is configured to obtain a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to a pre-stored angle and brightness relationship;
  • the relationship between the angle and the brightness in the calculation unit 602 may have multiple representations, and the present invention is The embodiment does not limit the specific expression of the relationship between the angle and the brightness.
  • the relationship between the angle and the brightness may be a function of the relationship between the angle and the brightness, of course, in practice.
  • other implementation manners may also be used, such as establishing a relationship between the angle and the brightness relationship to represent the angle and brightness relationship.
  • other forms of expression can also be used. I won't go into details here.
  • the correcting unit 603 is configured to calculate a brightness value of the corrected pixel point according to the f( ⁇ ) and a preset formula, where the preset formula includes:
  • Et dB, ⁇ ° is the brightness value of the corrected pixel point
  • E dB, ⁇ ° is the brightness value of the pixel before the modification
  • Z is the horizontal distance from the display panel to the midpoint of the camera lens
  • Ls is the pixel point Radiation value
  • a s is the area occupied by the pixel on the display panel
  • the compensation unit 604 is configured to perform brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the compensation method of the compensation unit 604 may be a prior art method.
  • the fourth preferred embodiment of the present invention is not limited to the compensation method.
  • the foregoing relationship between the angle and the brightness may specifically include:
  • the calculating unit 602 may be specifically configured to:
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is queried with the brightness list at a pre-stored angle;
  • f( ⁇ 1) and f corresponding to the two angles ⁇ 1, ⁇ 2 adjacent to the ⁇ are queried in the pre-stored angle and brightness list ( ⁇ 2), f( ⁇ ) is calculated by the internal difference method.
  • the calculating unit 602 may be specifically configured to:
  • the luminance relationship value f( ⁇ ) corresponding to the ⁇ is calculated according to a pre-stored angle and a luminance function.
  • the fourth preferred embodiment of the present invention is illustrated by the working principle of the fourth preferred embodiment of the present invention.
  • the brightness value E dB of the pixel is used .
  • ⁇ ° is proportional to cos 4 ⁇ according to the meaning of the above formula.
  • ⁇ can reach 10° or more, and 10° is taken as an example.
  • the attenuation of the luminance is about 6%, and the brightness is performed according to E dB, ⁇ ° .
  • the fourth preferred embodiment of the present invention divides the luminance value by f( ⁇ ). Decrease the influence of ⁇ on the brightness attenuation value, specifically, compensate the brightness of different viewing angles by f( ⁇ ), and reduce the influence of cos 4 ⁇ on the brightness attenuation, and prove by experiment that the fourth invention is adopted. After the adjustment of the mode of the preferred embodiment, the luminance attenuation deviation is significantly reduced, so that it has the advantage of small luminance degradation.
  • the display panel 700 includes: a Dumura system 600, and the Dumura system includes:
  • An angle obtaining unit 601 configured to acquire an angle ⁇ between a pixel point and a point line of the camera lens and a horizontal line when the camera is fixed;
  • ⁇ in the above-described angle acquisition unit 601 is as shown in FIG. 3, and the angle of ⁇ in FIG. 3 is exemplified by 10°. In practical applications, the angle of ⁇ may be other values, such as 5°, 6°, and the like.
  • the calculating unit 602 is configured to obtain a brightness relationship value f( ⁇ ) corresponding to the ⁇ according to a pre-stored angle and brightness relationship;
  • the correcting unit 603 is configured to calculate a brightness value of the corrected pixel point according to the f( ⁇ ) and a preset formula, where the preset formula includes:
  • Et dB, ⁇ ° is the brightness value of the corrected pixel point
  • E dB, ⁇ ° is the brightness value of the pixel before the modification
  • Z is the horizontal distance from the display panel to the midpoint of the camera lens
  • Ls is the pixel point Radiation value
  • a s is the area occupied by the pixel on the display panel
  • the compensation unit 604 is configured to perform brightness compensation on the display panel according to the brightness value of the corrected pixel point.
  • the compensation method of the compensation unit 604 may be a prior art method.
  • the fourth preferred embodiment of the present invention is not limited to the compensation method.
  • the foregoing relationship between the angle and the brightness may specifically include:
  • the calculating unit 602 may be specifically configured to:
  • the brightness relationship value f( ⁇ ) corresponding to the ⁇ is queried with the brightness list at a pre-stored angle;
  • f( ⁇ 1) and f corresponding to the two angles ⁇ 1, ⁇ 2 adjacent to the ⁇ are queried in the pre-stored angle and brightness list ( ⁇ 2), f( ⁇ ) is calculated by the internal difference method.
  • the calculating unit 602 may be specifically configured to:
  • the luminance relationship value f( ⁇ ) corresponding to the ⁇ is calculated according to a pre-stored angle and a luminance function.
  • a specific embodiment of the present invention further provides a display device, which includes a display panel, and the display panel includes a Dumura system.
  • the specific structure of the Dumura system can be referred to the description of the fourth preferred embodiment of the present invention. .
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • the computer readable medium may include a random access memory (RAM), a read-only memory (ROM), and an electrically erasable programmable read-only memory (Electrically Erasable Programmable).
  • EEPROM Electrically Error Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • Any connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium.
  • DSL Digital Subscriber Line
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

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Abstract

一种Dumura系统及该系统的亮度补偿方法，该方法包括：在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ（201）；依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)（202）；依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值（203）；依据修正后的像素点的亮度值对显示面板进行亮度补偿（204）。该Dumura系统具有降低视角和cos4θ对亮度的影响从而减少亮度衰减偏差的优点。

Description

Dumura系统中亮度的补偿方法、系统及显示面板
本申请要求于2015年12月21日提交中国专利局、申请号为201510961480.2、发明名称为“Dumura系统中亮度的补偿方法、系统及显示面板”的中国专利申请的优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及显示领域，尤其涉及一种Dumura系统中亮度的补偿方法、系统及显示面板。
背景技术
液晶屏(英文：panel)又称LCD(英文全称：Liquid Crystal Display，中文：液晶显示器)，其是目前常用的电子显示设备。现有的液晶屏的Dumura系统会依据亮度进行补偿。
在实现现有技术的方案中，发现现有技术存在如下技术问题：
在现有技术中，Dumura系统通常会依据摄像头取像的亮度进行补偿，但是现有技术中摄像头在对像素亮度取值时，由于角度的原因，会出现亮度的偏差，以50英寸的LCD为离，在角度10°时，两边(如图1虚线椭圆范围所示)的亮度会有6％左右的衰减，如图1所示，对于液晶屏来说，两边的亮度会暗，液晶屏尺寸越大，亮度衰减越厉害。
发明内容
提供一种Dumura系统中亮度的补偿方法，所述Dumura系统中亮度的补偿方法依据偏差角度对亮度值进行修改，从而降低角度对亮度衰减的影响，所以其具有补偿效果好的优点。
第一方面，提供一种Dumura系统中亮度的补偿方法，所述方法包括：
在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
Figure PCTCN2016070901-appb-000001
Figure PCTCN2016070901-appb-000002
其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，As为像素点在显示面板所占用的面积；
依据修正后的像素点的亮度值对显示面板进行亮度补偿。
结合第一方面提供的Dumura系统中亮度的补偿方法，在第一方面的第一种可选方案中，所述角度与亮度关系具体包括：
角度与亮度列表或角度与亮度函数。
结合第一方面的第一种可选方案，在第一方面的第二种可选方案中，如所述角度与亮度关系包括角度与亮度列表时，所述依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)具体，包括：
如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
结合第一方面的第一种可选方案，在第一方面的第三种可选方案中，如所述角度与亮度关系包括角度与亮度函数时，所述依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)具体，包括：
依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
第二方面，提供一种Dumura系统，所述系统包括：
角度获取单元，用于在相机固定时，获取像素点与相机镜头中点连线与水 平线的夹角θ；
计算单元，用于依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
修正单元，用于依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
Figure PCTCN2016070901-appb-000003
Figure PCTCN2016070901-appb-000004
其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，As为像素点在显示面板所占用的面积；
补偿单元，用于依据修正后的像素点的亮度值对显示面板进行亮度补偿。
结合第二方面提供的Dumura系统，在第二方面的第一种可选方案中，所述角度与亮度关系具体包括：
角度与亮度列表或角度与亮度函数。
结合第二方面的第一种可选方案，在第二方面的第二种可选方案中，如所述角度与亮度关系包括角度与亮度列表时，所述计算单元具体，用于：
如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
结合第二方面的第一种可选方案，在第二方面的第三种可选方案中，如所述角度与亮度关系包括角度与亮度函数时，所述计算单元具体，用于：
依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
第三方面，提供一种显示面板，所述显示面板包括第二方面提供的Dumura 系统、第二方面的第一种可选方案、第二方面的第二种可选方案或第二方面的第三中可选方案。
第四方面，提供一种显示装置，所述显示装置包括显示面板，所述显示面板第二方面提供的Dumura系统、第二方面的第一种可选方案、第二方面的第二种可选方案或第二方面的第三中可选方案。
根据各实施方式提供的Dumura系统中亮度的补偿方法、系统及显示面板，上述各实施方式通过对亮度值除以f(θ)来减少θ对亮度衰减值的影响，通过实验证明，采用本发明的技术方案能减少视角对亮度的影响以及减少cos4θ对亮度的影响，所以亮度衰减偏差明显降低，所以其具有亮度衰减小的优点。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中显示面板亮度显示示意图；
图2为本发明第一较佳实施方式中Dumura系统中亮度的补偿方法的流程图；
图3为本发明第一较佳实施方式中的参数和像素分布示意图；
图4为本发明第二较佳实施方式中Dumura系统中亮度的补偿方法的流程图；
图5为本发明第三较佳实施方式中Dumura系统中亮度的补偿方法的流程图；
图6为本发明第四较佳实施方式中的Dumura系统中亮度的补偿系统的结构图；
图7为本发明具体实施方式提供的显示面板的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清 楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参阅图2，图2本发明第一较佳实施方式提供的一种Dumura系统中亮度的补偿方法，该方法由显示面板或显示器完成，该方法如图2所示，包括如下步骤：
步骤S201、在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
上述步骤S201中的θ如图3所示，图3中θ的角度以10°为例，在实际应用中，上述θ的角度可能是其他的值，例如5°、6°等。
步骤S202、依据预先存储的角度与亮度关系获取该θ对应的亮度关系值f(θ)；
上述步骤S202中角度和亮度关系可以有多种表现形式，本发明具体实施方式并不限制上述角度和亮度关系的具体表现形式，例如，在本发明第一较佳实施方式的一个实施例中，上述角度和亮度关系可以为，角度和亮度关系曲线函数，当然在实际应用中，也可以采用其他的实现方式，例如建立角度和亮度关系列表的方式体现角度和亮度关系。当然在实际应用中，还可以采用其他的表现形式。这里不再赘述。
步骤S203、依据f(θ)和预设公式计算得到修正后的像素点的亮度值；
Figure PCTCN2016070901-appb-000005
Figure PCTCN2016070901-appb-000006
EtdB，θ°可以为修正后的像素点的亮度值，EdB，θ°可以为修改前的像素点的亮度值；Z可以为显示面板到相机镜头中点的水平距离，θ可以为像素点与相机镜头中点连线与水平线的夹角；Ls可以为像素点的辐射值，As可以为像 素点在显示面板所占用的面积。
步骤S204、依据修正后的像素点的亮度值对显示面板进行亮度补偿。
上述步骤S204的补偿方法可以采用现有技术方法，本发明第一较佳实施方式对该补偿方法并不限定。
下面通过本发明第一较佳实施方式的工作原理来说明本发明第一较佳实施方式所达到的技术效果，依据现有技术的补偿来说，其依据的是像素点的亮度值EdB，θ°进行补充的，依据上述公式的含义，EdB，θ°与cos4θ成正比，依据经验可以知道，对于显示面板，不可能所有的像素点的θ的值均为0，尤其是对于大屏幕的液晶面板的边缘位置，该θ可以达到10°或10°以上，以10°为例，当为10°时，亮度的衰减的偏差大约只有6％，依据EdB，θ°进行亮度补偿以后可能会进一步的提高亮度衰减的偏差，所以如何消除或减少θ对亮度值的影响成为解决亮度衰减偏差的关键，本发明第一较佳实施方式通过对亮度值除以f(θ)来减少θ对亮度衰减值的影响，具体的，即通过f(θ)对不同视角的亮度进行补偿，同时降低cos4θ对亮度衰减的影响，通过实验证明，采用本发明第一较佳实施方式的方式调整以后，亮度衰减偏差明显降低，所以其具有亮度衰减小的优点。
参阅图4，图4本发明第二较佳实施方式提供的一种Dumura系统中亮度的补偿方法，该方法由显示面板或显示器完成，本发明第二较佳实施方式的实现场景可以为，预先在显示面板内存储角度与亮度列表，该角度与亮度列表的获取方式具体可以包括：在显示面板的同一个位置上摄像头在不同位置(即不同角度)取像，得到不同角度下的同一个位置上角度与亮度的映射值，将该映射值记录下来形成角度与亮度列表。该方法如图4所示，包括如下步骤：
步骤S401、在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
上述步骤S401中的θ如图3所示，图3中θ的角度以10°为例，在实际应用中，上述θ的角度可能是其他的值，例如5°、6°等。
步骤S402、依据预先存储的角度与亮度列表获取该θ对应的亮度关系值f(θ)；
上述步骤S402中依据预先存储的角度与亮度列表获取该θ对应的亮度关 系值f(θ)具体可以包括：
如在预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询该θ对应的f(θ)；
如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表查询与该θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
上述通过内差法计算f(θ)的方法可以由多种，例如通过均内差的方法来计算，例如：
Figure PCTCN2016070901-appb-000007
当然在实际应用中，也可以通过其他的内差法来获取f(θ)，本发明第二较佳实施方式并不限制上述内差法的具体实现形式。
步骤S403、依据f(θ)和预设公式计算得到修正后的像素点的亮度值；
Figure PCTCN2016070901-appb-000008
Figure PCTCN2016070901-appb-000009
EtdB，θ°可以为修正后的像素点的亮度值，EdB，θ°可以为修改前的像素点的亮度值；Z可以为显示面板到相机镜头中点的水平距离，θ可以为像素点与相机镜头中点连线与水平线的夹角；Ls可以为像素点的辐射值，As可以为像素点在显示面板所占用的面积。
步骤S404、依据修正后的像素点的亮度值对显示面板进行亮度补偿。
上述步骤S404的补偿方法可以采用现有技术方法，本发明第一较佳实施方式对该补偿方法并不限定。
下面通过本发明第二较佳实施方式的工作原理来说明本发明第二较佳实施方式所达到的技术效果，依据现有技术的补偿来说，其依据的是像素点的亮 度值EdB，θ°进行补充的，依据上述公式的含义，EdB，θ°与cos4θ成正比，依据经验可以知道，对于显示面板，不可能所有的像素点的θ的值均为0，尤其是对于大屏幕的液晶面板的边缘位置，该θ可以达到10°或10°以上，以10°为例，当为10°时，亮度的衰减的偏差大约只有6％，依据EdB，θ°进行亮度补偿以后可能会进一步的提高亮度衰减的偏差，所以如何消除或减少θ对亮度值的影响成为解决亮度衰减偏差的关键，本发明第二较佳实施方式通过对亮度值除以f(θ)来减少θ对亮度衰减值的影响，通过实验证明，采用本发明第二较佳实施方式的方式调整以后，亮度衰减偏差明显降低，所以其具有亮度衰减小的优点。
参阅图5，图5本发明第三较佳实施方式提供的一种Dumura系统中亮度的补偿方法，该方法由显示面板或显示器完成，本发明第三较佳实施方式的实现场景可以为，预先在显示面板内存储角度与亮度函数，该角度与亮度函数的获取方式具体可以包括：在显示面板的同一个位置上摄像头在不同位置(即不同角度)取像，得到不同角度下的同一个位置上角度与亮度的映射值，将该映射值拟合成曲线，获取该曲线的表达式即角度与亮度函数。该方法如图5所示，包括如下步骤：
步骤S501、在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
上述步骤S501中的θ如图3所示，图3中θ的角度以10°为例，在实际应用中，上述θ的角度可能是其他的值，例如5°、6°等。
步骤S502、依据预先存储的角度与亮度函数计算该θ对应的亮度关系值f(θ)；
步骤S503、依据f(θ)和预设公式计算得到修正后的像素点的亮度值；
Figure PCTCN2016070901-appb-000010
Figure PCTCN2016070901-appb-000011
EtdB，θ°可以为修正后的像素点的亮度值，EdB，θ°可以为修改前的像素点的亮度值；Z可以为显示面板到相机镜头中点的水平距离，θ可以为像素点与相机镜头中点连线与水平线的夹角；Ls可以为像素点的辐射值，As可以为像素点在显示面板所占用的面积。
步骤S504、依据修正后的像素点的亮度值对显示面板进行亮度补偿。
上述步骤S504的补偿方法可以采用现有技术方法，本发明第一较佳实施方式对该补偿方法并不限定。
下面通过本发明第三较佳实施方式的工作原理来说明本发明第三较佳实施方式所达到的技术效果，依据现有技术的补偿来说，其依据的是像素点的亮度值EdB，θ°进行补充的，依据上述公式的含义，EdB，θ°与cos4θ成正比，依据经验可以知道，对于显示面板，不可能所有的像素点的θ的值均为0，尤其是对于大屏幕的液晶面板的边缘位置，该θ可以达到10°或10°以上，以10°为例，当为10°时，亮度的衰减的偏差大约只有6％，依据EdB，θ°进行亮度补偿以后可能会进一步的提高亮度衰减的偏差，所以如何消除或减少θ对亮度值的影响成为解决亮度衰减偏差的关键，本发明第三较佳实施方式通过对亮度值除以f(θ)来减少θ对亮度衰减值的影响，具体的，即通过f(θ)对不同视角的亮度进行补偿，同时降低cos4θ对亮度衰减的影响，通过实验证明，采用本发明第三较佳实施方式的方式调整以后，亮度衰减偏差明显降低，所以其具有亮度衰减小的优点。
参阅图6，如图6所示为本发明第四较佳实施方式提供的一种Dumura系统，该系统如图6所示，包括：
角度获取单元601，用于在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
上述角度获取单元601中的θ如图3所示，图3中θ的角度以10°为例，在实际应用中，上述θ的角度可能是其他的值，例如5°、6°等。
计算单元602，用于依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
上述计算单元602中角度和亮度关系可以有多种表现形式，本发明具体实 施方式并不限制上述角度和亮度关系的具体表现形式，例如，在本发明第四较佳实施方式的一个实施例中，上述角度和亮度关系可以为，角度和亮度关系曲线函数，当然在实际应用中，也可以采用其他的实现方式，例如建立角度和亮度关系列表的方式体现角度和亮度关系。当然在实际应用中，还可以采用其他的表现形式。这里不再赘述。
修正单元603，用于依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
Figure PCTCN2016070901-appb-000012
Figure PCTCN2016070901-appb-000013
其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，As为像素点在显示面板所占用的面积；
补偿单元604，用于依据修正后的像素点的亮度值对显示面板进行亮度补偿。
上述补偿单元604的补偿方法可以采用现有技术方法，本发明第四较佳实施方式对该补偿方法并不限定。
可选的，上述角度与亮度关系具体可以包括：
角度与亮度列表或角度与亮度函数。
可选的，如所述角度与亮度关系包括角度与亮度列表时，计算单元602具体，可以用于：
如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
可选的，如所述角度与亮度关系包括角度与亮度函数时，计算单元602具体，可以用于：
依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
下面通过本发明第四较佳实施方式的工作原理来说明本发明第四较佳实施方式所达到的技术效果，依据现有技术的补偿来说，其依据的是像素点的亮度值EdB，θ°进行补充的，依据上述公式的含义，EdB，θ°与cos4θ成正比，依据经验可以知道，对于显示面板，不可能所有的像素点的θ的值均为0，尤其是对于大屏幕的液晶面板的边缘位置，该θ可以达到10°或10°以上，以10°为例，当为10°时，亮度的衰减的偏差大约只有6％，依据EdB，θ°进行亮度补偿以后可能会进一步的提高亮度衰减的偏差，所以如何消除或减少θ对亮度值的影响成为解决亮度衰减偏差的关键，本发明第四较佳实施方式通过对亮度值除以f(θ)来减少θ对亮度衰减值的影响，具体的，即通过f(θ)对不同视角的亮度进行补偿，同时降低cos4θ对亮度衰减的影响，通过实验证明，采用本发明第四较佳实施方式的方式调整以后，亮度衰减偏差明显降低，所以其具有亮度衰减小的优点。
另外，本发明具体实施方式还提供一种显示面板，如图7所示，该显示面板700包括：Dumura系统600，Dumura系统包括：
角度获取单元601，用于在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
上述角度获取单元601中的θ如图3所示，图3中θ的角度以10°为例，在实际应用中，上述θ的角度可能是其他的值，例如5°、6°等。
计算单元602，用于依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
修正单元603，用于依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
Figure PCTCN2016070901-appb-000014
Figure PCTCN2016070901-appb-000015
其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，As为像素点在显示面板所占用的面积；
补偿单元604，用于依据修正后的像素点的亮度值对显示面板进行亮度补偿。
上述补偿单元604的补偿方法可以采用现有技术方法，本发明第四较佳实施方式对该补偿方法并不限定。
可选的，上述角度与亮度关系具体可以包括：
角度与亮度列表或角度与亮度函数。
可选的，如所述角度与亮度关系包括角度与亮度列表时，计算单元602具体，可以用于：
如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
可选的，如所述角度与亮度关系包括角度与亮度函数时，计算单元602具体，可以用于：
依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
另外，本发明具体实施方式还提供一种显示装置，该显示装置包括显示面板，该显示面板包括Dumura系统，该Dumura系统的具体结构可以参见本发明第四较佳实施方式的描述，这里不在赘述。
需要说明的是，对于前述的各方法实施方式或实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为根据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述实施方式或实施例均属于优选实施例，所涉及的动作和单元并不一定是本发明所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例装置中的单元可以根据实际需要进行合并、划分和删减。本领域的技术人员可以将本说明书中描述的不同实施例以及不同实施例的特征进行结合或组合。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本发明可以用硬件实现，或固件实现，或它们的组合方式来实现。当使用软件实现时，可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括随机存取存储器(Random Access Memory，RAM)、只读存储器(Read-Only Memory，ROM)、电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(Digital Subscriber Line，DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的，那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本发明所使用的，盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟，其中盘通常磁性的复制数据，而碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。
总之，以上所述仅为本发明技术方案的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改 进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种Dumura系统中亮度的补偿方法，其特征在于，所述方法包括：
    在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
    依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
    依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
    Figure PCTCN2016070901-appb-100001
    Figure PCTCN2016070901-appb-100002
    其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，AS为像素点在显示面板所占用的面积；
    依据修正后的像素点的亮度值对显示面板进行亮度补偿。
  2. 根据权利要求1所述的方法，其特征在于，所述角度与亮度关系具体包括：
    角度与亮度列表或角度与亮度函数。
  3. 根据权利要求2所述的方法，其特征在于，如所述角度与亮度关系包括角度与亮度列表时，所述依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)具体，包括：
    如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
    如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
  4. 根据权利要求2所述的方法，其特征在于，如所述角度与亮度关系包括角度与亮度函数时，所述依据预先存储的角度与亮度关系获取所述θ对应的 亮度关系值f(θ)具体，包括：
    依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
  5. 一种Dumura系统，其特征在于，所述系统包括：
    角度获取单元，用于在相机固定时，获取像素点与相机镜头中点连线与水平线的夹角θ；
    计算单元，用于依据预先存储的角度与亮度关系获取所述θ对应的亮度关系值f(θ)；
    修正单元，用于依据所述f(θ)和预设公式计算得到修正后的像素点的亮度值，所述预设公式包括：
    Figure PCTCN2016070901-appb-100003
    Figure PCTCN2016070901-appb-100004
    其中，EtdB，θ°为修正后的像素点的亮度值，EdB，θ°为修改前的像素点的亮度值；Z为显示面板到相机镜头中点的水平距离；Ls为像素点的辐射值，AS为像素点在显示面板所占用的面积；
    补偿单元，用于依据修正后的像素点的亮度值对显示面板进行亮度补偿。
  6. 根据权利要求5所述的系统，其特征在于，所述角度与亮度关系具体包括：
    角度与亮度列表或角度与亮度函数。
  7. 根据权利要求6所述的系统，其特征在于，如所述角度与亮度关系包括角度与亮度列表时，所述计算单元具体，用于：
    如在所述预先存储的角度与亮度列表能够查询到θ，则在预先存储的角度与亮度列表查询所述θ对应的亮度关系值f(θ)；
    如在预先存储的角度与亮度不能够查询到θ，则在预先存储的角度与亮度列表中查询与所述θ相邻的两个角度θ1、θ2对应的亮度关系值f(θ1)和f(θ2)，通过内差法计算f(θ)。
  8. 根据权利要求6所述的系统，其特征在于，如所述角度与亮度关系包括角度与亮度函数时，所述计算单元具体，用于：
    依据预先存储的角度与亮度函数计算所述θ对应的亮度关系值f(θ)。
  9. 一种显示面板，其特征在于，所述显示面板包括如权利要求5-8任一所述的Dumura系统。
  10. 一种显示装置，其特征在于，所述显示装置包括显示面板，所述显示面板包括如权利要求5-8任一所述的Dumura系统。
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