WO2023010440A1 - 光源模组的驱动方法、发光装置、显示装置及显示系统 - Google Patents

光源模组的驱动方法、发光装置、显示装置及显示系统 Download PDF

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Publication number
WO2023010440A1
WO2023010440A1 PCT/CN2021/110979 CN2021110979W WO2023010440A1 WO 2023010440 A1 WO2023010440 A1 WO 2023010440A1 CN 2021110979 W CN2021110979 W CN 2021110979W WO 2023010440 A1 WO2023010440 A1 WO 2023010440A1
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Prior art keywords
module
light emitting
driving
compensation
unit
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PCT/CN2021/110979
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English (en)
French (fr)
Inventor
林炯宏
吴逢祥
孙君毅
Original Assignee
瑞仪光电(苏州)有限公司
瑞仪光电股份有限公司
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Application filed by 瑞仪光电(苏州)有限公司, 瑞仪光电股份有限公司 filed Critical 瑞仪光电(苏州)有限公司
Priority to PCT/CN2021/110979 priority Critical patent/WO2023010440A1/zh
Priority to EP21952330.5A priority patent/EP4276808A4/en
Priority to KR1020247003733A priority patent/KR20240038729A/ko
Priority to CN202180007197.XA priority patent/CN117256026A/zh
Priority to TW110143259A priority patent/TWI792700B/zh
Priority to US17/947,174 priority patent/US11798503B2/en
Publication of WO2023010440A1 publication Critical patent/WO2023010440A1/zh
Priority to US18/367,505 priority patent/US20240005884A1/en

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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
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the invention relates to a driving method of a light source module, a light emitting device, a display device and a display system, in particular to a driving method of a light source module, a light emitting device, a display device and a display system capable of adjusting the non-uniform characteristics of light emitting diodes.
  • Liquid crystal displays are widely used in electronic products such as flat-screen televisions, computer devices, and mobile phones.
  • Existing liquid crystal displays usually include a liquid crystal panel, a control chip set, a driver chip set, and a backlight module.
  • the control chip set is used to convert or process image data
  • the drive chip set is used to output corresponding voltage signals to the liquid crystal panel.
  • the backlight module usually uses light emitting diodes (Light Emitting Diode, LED) to realize the light board, which is used as the light source of the liquid crystal panel to achieve the display effect.
  • LED Light Emitting Diode
  • the existing liquid crystal display usually adopts local dimming (local dimming) technology to turn on the different brightness corresponding to different display areas on the liquid crystal panel in the liquid crystal display with different brightness according to the image data.
  • Backlight For example, if the image data in the display area is brighter and the image in another display area is darker, the local dimming technology will control the light-emitting diodes of the display area to turn on with a brighter backlight brightness, and the other display area
  • the backlight in the display area is turned on at a lower backlight brightness, so compared with turning on all the backlight at the maximum backlight brightness in normal operation, the local dimming technology can save power consumption.
  • regional dimming technology can also be applied to general lighting fixtures.
  • zoned light control By means of zoned light control to correspond to different lighting areas, there is no need to additionally set up a variety of lamps with different shapes or functions. Corresponding to different lighting areas.
  • the existing regional dimming technology is based on an assumption that the output current of each light-emitting area of the lamp panel is the same, and under the same current, the brightness of each light-emitting area is the same.
  • the output current of the existing lamp board may be affected by the difference in the process characteristics of the driver chip, the circuit components or the layout of the circuit components, so that under the same current, the brightness of each light-emitting area Not evenly. In this case, it is difficult to make each light-emitting area after the area dimming achieve the desired brightness of each area. Therefore, it is necessary to improve the prior art.
  • the present invention provides a driving method of a light source module, a light emitting device, a display device and a display system, so as to improve the non-uniformity of brightness of each light emitting area under the same current.
  • Embodiments of the present invention provide a method for driving a light source module, which is used in a light emitting device.
  • the light emitting device includes a driving unit, a conversion unit, a compensation and correction unit, and the light source module.
  • the driving unit outputs a light source driving signal according to a source, wherein
  • the converting unit is coupled to the driving unit and the light source module, and the light source driving signal is used to drive a plurality of light-emitting areas of the light emitting diode module corresponding to the light source module, wherein the driving method of the light source module includes the
  • the conversion unit uses the compensation and correction unit to convert the light source driving signal into a plurality of modulated light source driving signals to drive each light-emitting area corresponding to the LED module.
  • Embodiments of the present invention further provide a light emitting device, including a driving unit, which is used to output a light source driving signal according to a source; a light source module, which includes a light emitting diode module, and the light source driving signal is used to drive A plurality of light-emitting areas of the light-emitting diode module set; a conversion unit, which is coupled to the drive unit and the light source module; and a compensation correction unit, which is coupled to the conversion unit, and the conversion unit uses the compensation correction unit
  • the light source driving signal is converted into a plurality of modulated light source driving signals to drive each light-emitting area corresponding to the light-emitting diode module.
  • Embodiments of the present invention also provide a display device, including a liquid crystal display panel; a driving unit, which is coupled to the liquid crystal display panel, and is used to output an image signal and a backlight driving signal according to an image source, wherein the image signal is used to drive the The liquid crystal display panel generates a corresponding image;
  • the backlight module includes a light emitting diode module, and the backlight driving signal is used to drive a plurality of light emitting areas of the light emitting diode module corresponding to the backlight module;
  • the conversion unit is coupled to In the driving unit and the backlight module; and a compensation correction unit, which is coupled to the conversion unit, and the conversion unit uses the compensation correction unit to convert the backlight driving signal into a plurality of modulated backlight driving signals to drive the corresponding Each light-emitting area of the light-emitting diode module.
  • Embodiments of the present invention also provide a display system, including a display device and an image source generating device.
  • the display device includes a drive unit, a backlight module, and a liquid crystal display panel, wherein the backlight module includes a light-emitting diode module, and the image
  • the source generation device includes an image processor, a conversion unit and a compensation correction unit, wherein the image processor is used to output image signals and backlight driving signals according to the image source; the conversion unit is coupled to the image processor; the compensation correction unit is coupled to In the conversion unit, the conversion unit uses the compensation and correction unit to convert the backlight driving signal into a plurality of modulated backlight driving signals; the driving unit is coupled to the liquid crystal display panel and the backlight module for the image signal
  • the plurality of modulated backlight driving signals are respectively sent to the liquid crystal display panel and the backlight module, wherein the image signal is used to drive the liquid crystal display panel to generate a corresponding image, and the plurality of modulated backlight driving signals is used to drive
  • FIG. 1 is a schematic diagram of a light emitting device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of another embodiment of the light emitting diode module of the light emitting device of FIG. 1 according to the embodiment of the present invention.
  • FIG. 3 , FIG. 3A and FIG. 3B are schematic diagrams of a display device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an LED module of the display device shown in FIG. 3 according to an embodiment of the present invention.
  • 5 and 5A are schematic diagrams of a display system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an LED module of the display device shown in FIG. 5 according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a light emitting device 10 according to an embodiment of the present invention.
  • the light emitting device 10 includes a driving unit 102 , a conversion unit 104 , a light source module 106 and a compensation and correction unit 108 .
  • the light emitting device 10 may be a lighting device, and the driving unit 102 is used to output a light driving signal (light driving signal) LDS according to a source S.
  • the source S may be a physical power switch or a software switching signal for turning on and off the lighting device.
  • the light source module 106 can include a light emitting diode module 1062, and the light emitting diode module 1062 includes a plurality of light emitting zones LZ, wherein each light emitting zone (lighting zone) LZ can correspond to a plurality of light emitting diodes LED, in this example, each light emitting zone Area LZ corresponds to 4 light emitting diodes LED.
  • the light source driving signal LDS is used to drive a plurality of light emitting regions corresponding to the light emitting diode module 1062 of the light source module 106 .
  • the conversion unit 104 is coupled to the driving unit 102 and the light source module 106, and the compensation and correction unit 108 is coupled to the conversion unit 104.
  • the conversion unit 104 uses the compensation and correction unit 108 to convert the light source driving signal LDS into a plurality of modulated light source driving signals (modulated light driving signal) M_LDS to drive each light-emitting area corresponding to the light-emitting diode module 1062.
  • the compensation correction unit 108 can adjust the light source driving signal LDS used to drive the LED module 1062 according to the optical, circuit and device characteristics of the LED, so as to generate the modulated light source driving signal M_LDS.
  • each light-emitting area can obtain uniformity. luminance characteristics, the light emitting device 10 of the embodiment of the present invention can solve the problem of uneven brightness of each light emitting region in the prior art under the same current.
  • FIG. 2 is a schematic diagram of another implementation form of the LED module 1062 according to the embodiment of the present invention.
  • the LED module 1062 has a plurality of LEDs, and the number of LEDs in a unit area UA is greater than the number of light emitting areas. For example, assuming that a range corresponding to one light-emitting area includes four light-emitting diodes LED, it means that one light-emitting area is included in one unit area UA, and the light-emitting area includes four light-emitting diodes LED. It should be noted that the number of LEDs included in each unit area UA is not limited to four.
  • the compensation correction unit 108 of the embodiment of the present invention may have a first compensation correction module 1082, which is used to access the light emission adjustment data of the uneven characteristic of the light emitting diode LED of the light emitting diode module 1062, so that the conversion unit 104 can
  • the first compensation and calibration module 1082 of the compensation and calibration unit 108 converts the light source driving signal LDS into a plurality of modulated light source driving signals M_LDS, and then drives the LED module 1062 with the modulated light source driving signals M_LDS.
  • the existing regional dimming technology is based on an assumption that the output current of each light-emitting area is the same, and under the same current, the brightness of each light-emitting area is the same .
  • each LED of the LED module 1062 has a difference in manufacturing process, hardware components or circuit layout, the characteristics of each LED are shifted. Therefore, when each LED of the LED module 1062 is driven with the same current, the brightness generated by each LED may be different, thereby affecting the brightness uniformity of the light source module 106 .
  • the conversion unit 104 of the embodiment of the present invention can use the first compensation and correction module 1082 to adjust the current value of the light-emitting diode LED, and the output current of each light-emitting area will be corrected by the first compensation and correction module 1082 There is a slight difference due to the function, so as to obtain uniform brightness characteristics, so as to avoid the occurrence of uneven brightness in the light-emitting area.
  • the light-emitting diode module 1062 is then introduced and applied with the existing regional dimming technology, so as to ensure that each light-emitting area after the regional dimming can achieve the desired brightness of each area.
  • the LED module 106 may further include a plurality of LED driving elements 1062_d1-1062_dn for driving LEDs located in corresponding light emitting regions. LED.
  • the characteristics of the LED driving elements 1062_d1-1062_dn may also be shifted due to differences in manufacturing processes, hardware components or circuit layouts, in addition to the uneven light emitting characteristics of each light emitting diode LED, each light emitting diode The regions are also affected by the uneven driving characteristics of each LED driving element 1062_d1-1062_dn to affect brightness uniformity.
  • the compensation correction unit 108 of the light emitting device 10 may further include a second compensation correction module 1084, which is used to access the unevenness of the LED driving elements 1062_d1-1062_dn of the LED module 1062 Driver tuning data for the feature.
  • the conversion unit 104 of the embodiment of the present invention can use the second compensation correction module 1084 to adjust the current value for the LED driving elements 1062_d1-1062_dn, so as to avoid the uneven brightness of the light emitting area.
  • the conversion unit 104 can be a microcontroller unit (Micro controller Unit, MCU), and the compensation correction unit 108 can be a memory (Memory), which stores the light emission adjustment data of the uneven characteristics of the light emitting diode LED in the first A compensation correction module 1082, and stores the driving adjustment data of the non-uniform characteristics of the LED driving elements 1062_d1-1062_dn in the second compensation correction module 1084.
  • MCU microcontroller unit
  • the compensation correction unit 108 can be a memory (Memory), which stores the light emission adjustment data of the uneven characteristics of the light emitting diode LED in the first A compensation correction module 1082, and stores the driving adjustment data of the non-uniform characteristics of the LED driving elements 1062_d1-1062_dn in the second compensation correction module 1084.
  • MCU microcontroller unit
  • the compensation correction unit 108 can be a memory (Memory), which stores the light emission adjustment data of the uneven characteristics of the light emitting diode LED in the first
  • the compensation correction unit 108 may also be a processor, so that the first compensation correction module 1082 uses an approximate conversion function (approximate conversion function) method to calculate to obtain the different
  • the light emission adjustment data of the uniform characteristic is calculated by the second compensation and correction module 1084 by using an approximate conversion function (approximate conversion function) method to obtain the driving adjustment data of the non-uniform characteristic of the LED driving elements 1062_d1-1062_dn.
  • the approximate transfer function can be in the form of a linear function, a non-linear function or a polynomial function, for example a cubic function.
  • the compensation correction unit 108 can also be embedded in the conversion unit 104, so as to use the central processing unit core of the conversion unit 104 to perform the calculation of the approximate conversion function, and it is not necessary to configure other processors as the compensation correction unit 108 , to reduce configuration costs.
  • FIG. 3 is a schematic diagram of a display device 30 according to an embodiment of the present invention.
  • the display device 30 may be a display, including a driving unit 302 , a conversion unit 304 , a backlight module 306 , a compensation and correction unit 308 and a liquid crystal display panel 310 .
  • the driving unit 302 is coupled to the liquid crystal display panel 310, and is used to output the image signal IMS and the backlight driving signal BLDS according to the image source IS.
  • the image source IS is generated by the display device 30 itself rather than input from the outside. Therefore, the display device 30 is a kind of Standalone display devices generally refer to liquid crystal products such as mobile phones, tablets, notebook computers, and vehicles.
  • the image signal IMS is used to drive the liquid crystal display panel 310 to generate a corresponding image.
  • the backlight module 306 includes a light-emitting diode module 3062, and the light-emitting diode module 3062 may include a plurality of light-emitting regions corresponding to the display region of the liquid crystal display panel 310, that is, the number of the plurality of light-emitting regions in a unit area is large in the number of multiple image regions.
  • the backlight driving signal BLDS output by the driving unit 302 can be used to drive the light emitting area corresponding to the LED module 3062 of the backlight module 306 .
  • the conversion unit 304 is coupled to the driving unit 302 and the backlight module 306, and the compensation correction unit 308 is coupled to the conversion unit 304.
  • the conversion unit 304 uses the compensation correction unit 308 to convert the backlight driving signal BLDS into a plurality of modulated backlight driving signals M_BLDS, to drive each light-emitting area corresponding to the light-emitting diode module 3062 .
  • the compensation calibration unit 308 can adjust the backlight driving signal BLDS for driving the LED module 1062 according to the optical, circuit and device characteristics of the display device 30 to generate the modulated backlight driving signal M_BLDS.
  • each display The region can obtain uniform brightness characteristics, and the display device 30 of the embodiment of the present invention can improve the problem of uneven brightness of the display region in the prior art.
  • the display device 30 may include a timing controller (Timing Controller) T-con, and the timing controller T-con may include a drive unit 302, and a conversion unit 304 and a compensation correction unit 308 Independent of the timing controller, therefore, the conversion unit 304 and the compensation correction unit 308 can be applied to timing controllers carried by different product types, thereby reducing development costs; or, as shown in FIG. 3B, the display device 30
  • the timing controller may include a drive unit 302, a conversion unit 304, and a compensation correction unit 308, that is, the conversion unit 304 and the compensation correction unit 308 are embedded in the timing controller as an integrated IC module, so that it is easy to use in mass production. Production costs can be reduced through economies of scale.
  • the compensation correction unit 308 of the embodiment of the present invention may have a first compensation correction module 3082, which is used to access the light emission adjustment data of the uneven characteristics of the light emitting diode LED of the light emitting diode module 3062, so that the conversion unit 304 uses
  • the first compensation calibration module 3082 of the compensation calibration unit 308 converts the backlight driving signal BLDS into a plurality of modulated backlight driving signals M_BLDS, and drives the LED module 3062 with the modulated backlight driving signal M_BLDS.
  • each LED of the LED module 3062 has a difference in manufacturing process, hardware components or circuit layout, the characteristics of each LED are shifted. Therefore, when each LED of the LED module 3062 is driven with the same current, the brightness generated by each LED may be different, thereby affecting the brightness uniformity of the backlight module 306 .
  • the conversion unit 304 of the embodiment of the present invention can use the first compensation and correction module 3082 to adjust the current value of the light emitting diode LED, so as to avoid the uneven brightness of the light emitting area.
  • the LED module 3062 may further include a plurality of LED driving elements 3062_d1-3062_dn for driving the LEDs located in the corresponding light emitting regions.
  • the compensation correction unit 308 of the light emitting device 10 may further include a second The second compensation correction module 3084 is used for accessing the driving adjustment data of the non-uniform characteristics of the LED driving elements 3062_d1-3062_dn of the LED module 3062.
  • the conversion unit 304 of the embodiment of the present invention can use the second compensation correction module 3084 to adjust the current value for the LED driving elements 3062_d1-3062_dn, so as to avoid uneven brightness of the light emitting area.
  • FIG. 5 is a schematic diagram of a display system 50 according to an embodiment of the present invention.
  • the display system 50 includes a display device DP and an image source generator ISG.
  • the display device DP may be a liquid crystal display, which includes a driving unit 502 , a backlight module 504 and a liquid crystal display panel 506 .
  • the image source generating device ISG includes an image processor 508, a conversion unit 510, and a compensation and correction unit 512.
  • the image source generating device ISG can be set on a host or a device with computing and processing functions, which is different from the display device in FIG. 3
  • the compensation correction unit 308 of the display device 30 is built in the display device 30 .
  • the image source is externally input to the display device DP, that is, generated by the image source generating device ISG and input to the display device DP.
  • the display device DP is a connection-type display device, and generally refers to a computer screen or a liquid crystal product such as a television equipped with external terminals.
  • the display device DP may include a timing controller (Timing Controller) T-con, and the timing controller may include a driving unit 502, and the conversion unit 510 and the compensation correction unit 512 are independent of the timing controller (such as 5A), therefore, both the conversion unit 510 and the compensation correction unit 512 perform their functions in the image source generating device ISG, so a computer device with high-speed computing can be used as the image source generating device ISG, such as a graphics processing unit ( Graphic Processing Unit, GPU) to perform the compensation and correction functions of the conversion unit 510 and the compensation and correction unit 512, so that the timing controller of the display device DP does not need to be redesigned and developed. Therefore, the image source generation device ISG can be applied in different Type display device DP, in order to reduce the development cost of the timing controller.
  • Timing Controller Timing Controller
  • the image processor 508 of the image source generating device ISG is used to output the image signal IMS and the backlight driving signal BLDS to the conversion unit 510 according to the image source IS.
  • the unit 512 converts the backlight driving signal BLDS into a plurality of modulated backlight driving signals M_BLDS.
  • the driving unit 502 of the display device DP is coupled to the LCD panel 506 and the backlight module 504 for sending the image signal IMS and the modulated backlight driving signal M_BLDS to the LCD panel 506 and the backlight module 504 respectively. That is to say, the driving unit 502 receives the image signal IMS and the modulated backlight driving signal M_BLDS from the conversion unit 510 , and transmits the image signal IMS and the modulated backlight driving signal M_BLDS to the backlight module 504 and the LCD panel 506 . Therefore, the image signal IMS can be used to drive the LCD panel 506 to generate a corresponding image, and the modulated backlight driving signal M_BLDS can be used to drive the light-emitting area corresponding to the LED module 5042 .
  • the backlight module 504 includes a light emitting diode module 5042, wherein the light emitting diode module 5042 includes a plurality of light emitting regions corresponding to the display region of the liquid crystal display panel 506, therefore, the backlight driving signal M_BLDS output by the driving unit 502 can be used to drive the corresponding The light emitting area of the LED module 5042 of the backlight module 504 .
  • the compensation correction unit 512 of the embodiment of the present invention can adjust the backlight driving signal BLDS used to drive the light-emitting diode module 5042 according to the optical, circuit and component characteristics of the display system 50, so as to generate a modulated backlight With the driving signal M_BLDS, the display system 50 of the embodiment of the present invention can improve the problem of uneven brightness in the display area of the prior art.
  • the compensation correction unit 512 of the image source generation device ISG of the display system 50 may have a first compensation correction module 5122, which is used to access the light emission adjustment data of the uneven characteristics of the light emitting diode LED of the light emitting diode module 5042, so that The conversion unit 510 can use the first compensation and correction module 5122 of the compensation and correction unit 512 to convert the backlight driving signal BLDS into a plurality of modulated backlight drive signals M_BLDS, and transmit them to the driving unit 502, and then use the modulated backlight drive signal M_BLDS to drive light emission Diode module 5042.
  • the converting unit 510 of the embodiment of the present invention can use the first compensation and correction module 5122 to adjust the current value of the light-emitting diode LED, so as to avoid uneven brightness of the light-emitting area.
  • the LED module 5042 may further include a plurality of LED driving elements 5042_d1-5042_dn, which are used to drive the LEDs located in the corresponding light emitting regions.
  • the compensation correction unit 512 of the light emitting device 50 may further include a second The second compensation correction module 5124 is used for accessing the driving adjustment data of the non-uniform characteristics of the LED driving elements 5042_d1-5042_dn of the LED module 5042 .
  • the conversion unit 304 of the embodiment of the present invention can use the second compensation correction module 5124 to adjust the current value for the LED driving elements 5042_d1-5042_dn, so as to avoid uneven brightness of the light emitting area.
  • the present invention provides a driving method for a light source module, a light emitting device, a display device, and a display system. Since the output current of each light emitting area is slightly different due to the correction function of the compensation and correction unit, each light emitting area The region can obtain uniform brightness characteristics, and the present invention can improve the problem of uneven brightness of each light emitting region in the prior art under the same current, so as to avoid the occurrence of uneven brightness of the light emitting region. At this time, the existing regional dimming technology can be introduced and applied to ensure that each light-emitting area after regional dimming can achieve the desired brightness of each area.
  • the first compensation and correction module and the second compensation and correction module of the compensation and correction unit are used to obtain the light emission adjustment data of the non-uniform characteristics of the light-emitting diode LED, and to obtain the driving of the non-uniform characteristics of the light-emitting diode driving element. Adjusting the data, correcting and adjusting the current value of the light emitting diode and the driving element of the light emitting diode, so as to avoid uneven brightness of the light emitting area.
  • M_BLDS Modulate backlight driving signal
  • M_LDS modulated light source drive signal
  • ISG image source generator
  • T-con timing controller

Abstract

一种光源模组的驱动方法，用于发光装置，该发光装置包含驱动单元、转换单元、补偿校正单元及该光源模组，该驱动单元依据来源输出光源驱动讯号，其中该转换单元耦接于该驱动单元及该光源模组，并且该光源驱动讯号用以驱动对应于该光源模组的发光二极管模组的多个发光区域，其中该光源模组的驱动方法包含该转换单元利用该补偿校正单元将该光源驱动讯号转化为多个调变光源驱动讯号，以驱动对应于该发光二极管模组的每一发光区域。

Description

光源模组的驱动方法、发光装置、显示装置及显示系统 技术领域
本发明涉及光源模组的驱动方法、发光装置、显示装置及显示系统，尤其涉及可调整发光二极管的不均匀特性的光源模组的驱动方法、发光装置、显示装置及显示系统。
背景技术
液晶显示器被广泛地应用于平面电视、计算机装置、移动电话等电子产品。现有的液晶显示器通常包含有液晶面板、控制晶片组、驱动晶片组以及背光模组，其中控制晶片组用来转换或处理影像数据，驱动晶片组用来将对应的电压讯号输出至液晶面板，而背光模组通常由发光二极管(Light Emitting Diode，LED)实现灯板，作为液晶面板的光源，以达到显示的效果。
为了节省液晶显示器的能源以及增加液晶显示器的影像对比度，现有的液晶显示器通常采用区域调光(local dimming)技术来根据影像数据以不同亮度开启液晶显示器中对应于液晶面板上不同显示区域的不同背光源。举例来说，若影像数据于显示区域的影像较亮而于另一显示区域的影像较暗，则区域调光技术会控制该显示区域的发光二极管以较亮的背光亮度开启，而该另一显示区域的背光源以较暗的背光亮度开启，因此相较于一般操作下将全部背光源以最大背光亮度开启，区域调光技术可节省耗电量。
区域调光技术除了应用于液晶显示的技术领域之外，也可以应用于一般的照明灯具，借由分区控光来对应不同的照明区域，并不需要额外设置不同形态或功能的多种灯具来对应不同的照明区域。
一般来说，现有的区域调光技术基于一个假设条件，即灯板的每一个发光区域的输出电流皆为相同的，且在相同的电流下，每一个发光区域的 亮度皆相同。然而，实际上，现有的灯板的输出电流可能受到驱动晶片的制程特性、电路元件或者电路元件布局的差异而影响灯板的电流，进而使得在相同的电流下，每一个发光区域的亮度并不均匀。在此情况下，难以使区域调光后的各个发光区域，都能达到期望的分区亮度，因此，现有技术有改进的必要。
发明内容
鉴于此，本发明提供一种光源模组的驱动方法、发光装置、显示装置及显示系统，以改善在相同的电流下，每一个发光区域的亮度的不均匀特性。
本发明的实施例提出一种光源模组的驱动方法，用于发光装置，该发光装置包含驱动单元、转换单元、补偿校正单元及该光源模组，该驱动单元依据来源输出光源驱动讯号，其中该转换单元耦接于该驱动单元及该光源模组，并且该光源驱动讯号用以驱动对应于该光源模组的发光二极管模组的多个发光区域，其中该光源模组的驱动方法包含该转换单元利用该补偿校正单元将该光源驱动讯号转化为多个调变光源驱动讯号，以驱动对应于该发光二极管模组的每一发光区域。
本发明的实施例另提出一种发光装置，包含驱动单元，其用来依据来源输出光源驱动讯号；光源模组，其包含发光二极管模组，且该光源驱动讯号用以驱动对应于该光源模组的该发光二极管模组的多个发光区域；转换单元，其耦接于该驱动单元及该光源模组；以及补偿校正单元，其耦接于该转换单元，该转换单元利用该补偿校正单元将该光源驱动讯号转化为多个调变光源驱动讯号，以驱动对应于该发光二极管模组的每一发光区域。
本发明的实施例还提出一种显示装置，包含液晶显示面板；驱动单元，其耦接于该液晶显示面板，用来依据影像来源输出影像讯号及背光驱动讯号，其中该影像讯号用以驱动该液晶显示面板产生对应影像；背光模组，其包含发光二极管模组，且该背光驱动讯号用以驱动对应于该背光模组的该发光二极管模组的多个发光区域；转换单元，其耦接于该驱动单元 及该背光模组；以及补偿校正单元，其耦接于该转换单元，该转换单元利用该补偿校正单元将该背光驱动讯号转化为多个调变背光驱动讯号，以驱动对应于该发光二极管模组的每一发光区域。
本发明的实施例还提出一种显示系统，包含显示装置及影像来源产生装置，该显示装置包含驱动单元、背光模组及液晶显示面板，其中，该背光模组包含发光二极管模组，该影像来源产生装置包含影像处理器、转换单元及补偿校正单元，其中，该影像处理器用来依据影像来源输出影像讯号及背光驱动讯号；该转换单元耦接于该影像处理器；该补偿校正单元耦接于该转换单元，该转换单元利用该补偿校正单元将该背光驱动讯号转化为多个调变背光驱动讯号；该驱动单元耦接于该液晶显示面板与该背光模组，用以将该影像讯号与该多个调变背光驱动讯号分别送往该液晶显示面板与该背光模组，其中，该影像讯号用以驱动该液晶显示面板产生对应影像，该多个调变背光驱动讯号用以驱动对应于该发光二极管模组的多个发光区域。
附图说明
为了使本发明的上述和其他目的、特征、优点与实施例能更加明显易懂，现在参考附图进行如下说明。
图1为本发明的实施例的发光装置的示意图。
图2为本发明的实施例的图1的发光装置的另一实施形态的发光二极管模组的示意图。
图3、图3A及图3B为本发明的实施例的显示装置的示意图。
图4为本发明的实施例的图3的显示装置的发光二极管模组的示意图。
图5及图5A为本发明的实施例的显示系统的示意图。
图6为本发明的实施例的图5的显示装置的发光二极管模组的示意图。
具体实施方式
有关本发明的相关申请专利特色与技术内容，在以下参考附图的较佳实施例的详细说明中，将可清楚地呈现。在进行详细说明前，应注意的是，类似的元件以相同的编号来表示。
请参考图1，图1为本发明的实施例的发光装置10的示意图。发光装置10包含有驱动单元102、转换单元104、光源模组106及补偿校正单元108。发光装置10可以是灯具装置，驱动单元102用来依据来源S输出光源驱动讯号(light driving signal)LDS，该来源S可以是用于启闭灯具装置的实体电源开关或软件启闭讯号。光源模组106可包含发光二极管模组1062，发光二极管模组1062包含多个发光区域LZ，其中每一发光区域(lighting zone)LZ可对应多个发光二极管LED，在此例中，每一发光区域LZ对应4个发光二极管LED。光源驱动讯号LDS用以驱动对应于光源模组106的发光二极管模组1062的多个发光区域。转换单元104耦接于驱动单元102及光源模组106，补偿校正单元108耦接于转换单元104，转换单元104利用补偿校正单元108将光源驱动讯号LDS转化为多个调变光源驱动讯号(modulated light driving signal)M_LDS，以驱动对应于发光二极管模组1062的每一发光区域。其中，补偿校正单元108可根据发光二极管的光学、电路以及元件特性，调整用于驱动发光二极管模组1062的光源驱动讯号LDS，以产生调变光源驱动讯号M_LDS。如此一来，由于每个发光区域的输出电流会因补偿校正单元108的校正作用而产生些微不同(也就是调变光源驱动讯号M_LDS不同于光源驱动讯号LDS)，因此各个发光区域就能获得均匀的亮度特性，本发明的实施例的发光装置10即可改善先前技术的发光区域在相同的电流下，每一个发光区域的亮度不均匀的问题。
详细而言，请参考图2，图2为本发明的实施例的发光二极管模组1062的另一实施形态的示意图。发光二极管模组1062具有多个发光二极管LED，并且在一个单元面积UA中的发光二极管LED的数量多于发光区域的数量。举例而言，假设对应于一个发光区域的范围包含有四个发光二极管LED，表示在一个单元面积UA中包含有一个发光区域，而该发光区域包含有四个发光二极管LED。值得注意的是，上述每一单元面积UA 所包含的发光二极管LED的数量并不限于四个。
此外，本发明的实施例的补偿校正单元108可具有第一补偿校正模组1082，其用来存取发光二极管模组1062的发光二极管LED的不均匀特性的发光调整数据，使转换单元104可利用补偿校正单元108的第一补偿校正模组1082，将光源驱动讯号LDS转化为多个调变光源驱动讯号M_LDS，进而以调变光源驱动讯号M_LDS驱动发光二极管模组1062。
如习知技术中所谈到的，现有的区域调光技术基于一个假设条件，即每一个发光区域的输出电流皆为相同的，且在相同的电流下，每一个发光区域的亮度皆相同。然而，具体而言，由于发光二极管模组1062的每一发光二极管LED皆具有制程、硬件元件或电路布局的差异，由此导致每一发光二极管LED的特性产生偏移。因此，当以同一电流驱动发光二极管模组1062的每一发光二极管LED时，每一发光二极管LED所产生的亮度可能不同，从而影响光源模组106的亮度均匀性。在实施例中，本发明的实施例的转换单元104即可利用第一补偿校正模组1082调整发光二极管LED的电流值，每个发光区域的输出电流会因第一补偿校正模组1082的校正作用而产生些微不同，由此获得均匀亮度特性，以避免发光区域的亮度不均匀的情形发生。此时，发光二极管模组1062再导入应用现有的区域调光技术，便能确保区域调光后的各个发光区域，都能达到期望的分区亮度。
在本发明的实施例的另一实施形态中，如图2所示，发光二极管模组106可另包含多个发光二极管驱动元件1062_d1-1062_dn，以用来驱动位于对应的发光区域内的发光二极管LED。在此情形下，由于发光二极管驱动元件1062_d1-1062_dn也可能因为制程、硬件元件或电路布局的差异而导致特性偏移，因此，除了每一发光二极管LED的不均匀发光特性之外，每个发光区域同时也会受到每一发光二极管驱动元件1062_d1-1062_dn的不均匀驱动特性而影响亮度均匀性。针对此问题，本发明的实施例的发光装置10的补偿校正单元108可另包含第二补偿校正模组1084，其用来存取发光二极管模组1062的发光二极管驱动元件1062_d1-1062_dn的不均匀特性的驱动调整数据。如此一来，本发明的实施例的转换单元104即可利用 第二补偿校正模组1084来调整用于发光二极管驱动元件1062_d1-1062_dn的电流值，以避免发光区域的亮度不均匀的情形发生。
在本实施例中，转换单元104可以是微控制器单元(Micro controller Unit，MCU)，补偿校正单元108则可以是内存(Memory)，将发光二极管LED的不均匀特性的发光调整数据存储于第一补偿校正模组1082，并且将发光二极管驱动元件1062_d1-1062_dn的不均匀特性的驱动调整数据存储于第二补偿校正模组1084。然而，所提出的发明不限于此，例如，补偿校正单元108也可以是处理器，使第一补偿校正模组1082利用近似转换函数(approximate conversion function)的方法来计算以获得发光二极管LED的不均匀特性的发光调整数据，使第二补偿校正模组1084利用近似转换函数(approximate conversion function)的方法来计算以获得发光二极管驱动元件1062_d1-1062_dn的不均匀特性的驱动调整数据。近似转换函数可以是线性函数、非线性函数或多项式函数的形式，例如三次函数。甚至在其他实施例中，补偿校正单元108也可以嵌入在转换单元104中，以利用转换单元104的中央处理器核心进行近似转换函数的计算，不需另外再配置其他处理器作为补偿校正单元108，以降低配置成本。
在另一实施例中，请参考图3，图3为本发明的实施例的显示装置30的示意图。显示装置30可以是显示器，包含有驱动单元302、转换单元304、背光模组306、补偿校正单元308以及液晶显示面板310。驱动单元302耦接于液晶显示面板310，用来依据影像来源IS输出影像讯号IMS及背光驱动讯号BLDS，影像来源IS由显示装置30自行产生而非由外部输入，因此，显示装置30是一种独立型的显示装置，通常是指手机、平板、笔记本电脑、车载等型式的液晶产品。
其中，影像讯号IMS用以驱动液晶显示面板310产生对应影像。背光模组306包含发光二极管模组3062，发光二极管模组3062可包含对应于液晶显示面板310的显示区域的多个发光区域，也就是说，在一个单元面积中的多个发光区域的数量多于多个影像区域的数量。驱动单元302所输出的背光驱动讯号BLDS可用来驱动对应于背光模组306的发光二极管模 组3062的发光区域。转换单元304耦接于驱动单元302及背光模组306，补偿校正单元308耦接于转换单元304，转换单元304利用补偿校正单元308将背光驱动讯号BLDS转化为多个调变背光驱动讯号M_BLDS，以驱动对应于发光二极管模组3062的每一发光区域。其中，补偿校正单元308可根据显示装置30的光学、电路以及元件特性，调整用于驱动发光二极管模组1062的背光驱动讯号BLDS，以产生调变背光驱动讯号M_BLDS。如此一来，由于每个显示区域所对应的发光区域的输出电流会因补偿校正单元308的校正作用而产生些微不同(也就是调变背光驱动讯号M_BLDS不同于背光驱动讯号BLDS)，因此各个显示区域就能获得均匀亮度特性，本发明的实施例的显示装置30即可改善先前技术的显示区域的亮度不均匀的问题。
在一实施例中，如图3A所示，显示装置30可包含时序控制器(Timing Controller)T-con，并且时序控制器T-con可包含驱动单元302，而转换单元304及补偿校正单元308独立于时序控制器之外，因此，转换单元304及补偿校正单元308可以应用于不同产品型式所搭载的时序控制器，由此可减少开发成本；或者，如图3B所示，显示装置30的时序控制器可包含驱动单元302、转换单元304及补偿校正单元308，也就是转换单元304及补偿校正单元308嵌入在时序控制器中以作为一个整合式的IC模组，这样在大量生产时就能以规模经济降低生产成本。
此外，本发明的实施例的补偿校正单元308可具有第一补偿校正模组3082，其用来存取发光二极管模组3062的发光二极管LED的不均匀特性的发光调整数据，使转换单元304利用补偿校正单元308的第一补偿校正模组3082将背光驱动讯号BLDS转化为多个调变背光驱动讯号M_BLDS，并且以调变背光驱动讯号M_BLDS驱动发光二极管模组3062。
具体而言，由于发光二极管模组3062的每一发光二极管LED皆具有制程、硬件元件或电路布局的差异，导致每一发光二极管LED的特性产生偏移。因此，当以同一电流驱动发光二极管模组3062的每一发光二极管LED时，每一发光二极管LED所产生的亮度可能不同，从而影响背光模 组306的亮度均匀性。在一实施例中，本发明的实施例的转换单元304即可利用第一补偿校正模组3082调整发光二极管LED的电流值，以避免发光区域的亮度不均匀的情形发生。
此外，如图4所示，发光二极管模组3062可另包含多个发光二极管驱动元件3062_d1-3062_dn，以用来驱动位于对应的发光区域内的发光二极管LED。在此情形下，由于发光二极管驱动元件3062_d1-3062_dn也可能因为制程、硬件元件或电路布局的差异而导致特性偏移，因此本发明的实施例的发光装置10的补偿校正单元308可另包含第二补偿校正模组3084，其用来存取发光二极管模组3062的发光二极管驱动元件3062_d1-3062_dn的不均匀特性的驱动调整数据。如此一来，本发明的实施例的转换单元304即可利用第二补偿校正模组3084调整用于发光二极管驱动元件3062_d1-3062_dn的电流值，以避免发光区域的亮度不均匀的情形发生。
在另一实施例中，请参考图5，图5为本发明的实施例的显示系统50的示意图。显示系统50包含有显示装置DP及影像来源产生装置ISG。显示装置DP可以是液晶显示器，其包驱动单元502、背光模组504以及液晶显示面板506。影像来源产生装置ISG包含有影像处理器508、转换单元510以及补偿校正单元512，例如影像来源产生装置ISG可以是设置于主机端或具有运算处理功能的装置上，这不同于图3的显示装置30的补偿校正单元308是内建于显示装置30中。因此，影像来源是经由外部输入至显示装置DP，也就是经由影像来源产生装置ISG产生而输入至显示装置DP。显示装置DP是一种连接型的显示装置，通常是指计算机屏幕或是搭载有外接端子的电视等液晶产品。
在一实施例中，显示装置DP可包含时序控制器(Timing Controller)T-con，并且时序控制器可包含驱动单元502，而转换单元510及补偿校正单元512独立于时序控制器之外(如图5A所示)，因此，转换单元510及补偿校正单元512都是在影像来源产生装置ISG中执行其功能，所以可以采用高速运算的计算机装置作为影像来源产生装置ISG，例如以图形处理单元(Graphic Processing Unit，GPU)来执行转换单元510及补偿校正 单元512的补偿校正功能，这样一来，显示装置DP的时序控制器并不需要重新设计开发，因此，影像来源产生装置ISG可以应用在不同型式的显示装置DP中，以减少时序控制器的开发成本。
影像来源产生装置ISG的影像处理器508用来依据影像来源IS将影像讯号IMS及背光驱动讯号BLDS输出至转换单元510，补偿校正单元512耦接于转换单元510，使转换单元510可利用补偿校正单元512将背光驱动讯号BLDS转化为多个调变背光驱动讯号M_BLDS。
显示装置DP的驱动单元502耦接于液晶显示面板506与背光模组504，用以将影像讯号IMS与调变背光驱动讯号M_BLDS分别送往液晶显示面板506与背光模组504。也就是说，驱动单元502接收来自转换单元510的影像讯号IMS及调变背光驱动讯号M_BLDS，并且将影像讯号IMS及调变背光驱动讯号M_BLDS转传至背光模组504以及液晶显示面板506。因此，影像讯号IMS可用来驱动液晶显示面板506产生对应影像，而调变背光驱动讯号M_BLDS可用来驱动对应于发光二极管模组5042的发光区域。背光模组504包含发光二极管模组5042，其中发光二极管模组5042包含对应于液晶显示面板506的显示区域的多个发光区域，因此，驱动单元502所输出的背光驱动讯号M_BLDS可用来驱动对应于背光模组504的发光二极管模组5042的发光区域。
在上述实施例中，由于本发明的实施例的补偿校正单元512可根据显示系统50的光学、电路以及元件特性，调整用于驱动发光二极管模组5042的背光驱动讯号BLDS，以产生调变背光驱动讯号M_BLDS，本发明的实施例的显示系统50即可改善先前技术的显示区域的亮度不均匀的问题。
此外，显示系统50的影像来源产生装置ISG的补偿校正单元512可具有第一补偿校正模组5122，其用来存取发光二极管模组5042的发光二极管LED的不均匀特性的发光调整数据，使转换单元510可利用补偿校正单元512的第一补偿校正模组5122将背光驱动讯号BLDS转化为多个调变背光驱动讯号M_BLDS，并且传送至驱动单元502，进而利用调变背光驱动讯号M_BLDS驱动发光二极管模组5042。
具体而言，由于发光二极管模组5042的每一发光二极管LED皆具有制程、硬件元件或电路布局的差异，导致每一发光二极管LED的特性产生偏移。因此，当以同一电流驱动发光二极管模组5042的每一发光二极管LED时，每一发光二极管LED所产生的亮度可能不同，影响背光模组504的亮度均匀性。在一实施例中，本发明的实施例的转换单元510即可利用第一补偿校正模组5122调整发光二极管LED的电流值，以避免发光区域的亮度不均匀的情形发生。
此外，如图6所示，发光二极管模组5042可另包含多个发光二极管驱动元件5042_d1-5042_dn，其用来驱动位于对应的发光区域内的发光二极管LED。在此情形下，由于发光二极管驱动元件5042_d1-5042_dn也可能因为制程、硬件元件或电路布局的差异而导致特性偏移，因此本发明的实施例的发光装置50的补偿校正单元512可另包含第二补偿校正模组5124，其用来存取发光二极管模组5042的发光二极管驱动元件5042_d1-5042_dn的不均匀特性的驱动调整数据。如此一来，本发明的实施例的转换单元304即可利用第二补偿校正模组5124调整用于发光二极管驱动元件5042_d1-5042_dn的电流值，以避免发光区域的亮度不均匀的情形发生。
综上所述，本发明提供一种光源模组的驱动方法、发光装置、显示装置及显示系统，由于每个发光区域的输出电流会因补偿校正单元的校正作用而产生些微不同，因此各个发光区域就能获得均匀亮度特性，本发明即可改善先前技术的发光区域在相同的电流下，每一个发光区域的亮度不均匀的问题，以避免发光区域的亮度不均匀的情形发生。此时再导入应用现有的区域调光技术，便能确保区域调光后的各个发光区域，都能达到期望的分区亮度。更详细的说，是利用补偿校正单元的第一补偿校正模组以及第二补偿校正模组，获得发光二极管LED的不均匀特性的发光调整数据，以及获得发光二极管驱动元件的不均匀特性的驱动调整数据，修正调整发光二极管以及发光二极管驱动元件的电流值，以避免发光区域的亮度不均匀的情形发生。
以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所做的 均等变化与修饰，皆应属本发明的涵盖范围。
【附图标记列表】
10：发光装置
102,302,502：驱动单元
104,304,510：转换单元
106：光源模组
1062,3062,5042：发光二极管模组
1062_d1-1062_dn,3062_d1-3062_dn,5042_d1-5042_dn：发光二极管驱
动元件
108,308,512：补偿校正单元
1082,3082,5122：第一补偿校正模组
1084,3084,5124：第二补偿校正模组
30：显示装置
306,504：背光模组
310,506：液晶显示面板
50：显示系统
508：影像处理器
BLDS：背光驱动讯号
M_BLDS：调变背光驱动讯号
M_LDS：调变光源驱动讯号
DP：显示装置
IMS：影像讯号
IS：影像来源
ISG：影像来源产生装置
LDS：光源驱动讯号
LED：发光二极管
LZ：发光区域
S：来源
T-con：时序控制器
UA：单元面积。

Claims (24)

  1. 一种光源模组的驱动方法，用于发光装置，所述发光装置包含驱动单元、转换单元、补偿校正单元及所述光源模组，所述驱动单元依据来源输出光源驱动讯号，其中，所述转换单元耦接于所述驱动单元及所述光源模组，并且所述光源驱动讯号用以驱动对应于所述光源模组的发光二极管模组的多个发光区域，其中，所述光源模组的驱动方法包含：
    所述转换单元利用所述补偿校正单元将所述光源驱动讯号转化为多个调变光源驱动讯号，以驱动对应于所述发光二极管模组的每一发光区域。
  2. 根据权利要求1所述的光源模组的驱动方法，其中，所述发光二极管模组具有多个发光二极管，所述补偿校正单元具有第一补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管的不均匀特性的发光调整数据。
  3. 根据权利要求2所述的光源模组的驱动方法，其中，所述转换单元利用所述补偿校正单元的所述第一补偿校正模组将所述光源驱动讯号转化为所述多个调变光源驱动讯号。
  4. 根据权利要求2所述的光源模组的驱动方法，其中，所述发光二极管模组还具有多个发光二极管驱动元件，所述多个发光二极管驱动元件用以驱动位于对应的发光区域内的发光二极管，所述补偿校正单元更具有第二补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管驱动元件的不均匀特性的驱动调整数据。
  5. 根据权利要求4所述的光源模组的驱动方法，其中，所述转换单元同时利用所述补偿校正单元的所述第一补偿校正模组与所述第二补偿校正模组，将所述光源驱动讯号转化为所述多个调变光源驱动讯号。
  6. 根据权利要求1所述的光源模组的驱动方法，其中，所述发光装置为显示装置，所述显示装置包含所述驱动单元、所述转换单元、所述补偿校正单元、所述光源模组，及液晶显示面板，所述光源模组为背光模组，所述来源为影像来源，所述光源驱动讯号为背光驱动讯号，所述驱动单元依据所述影像来源输出影像讯号及所述背光驱动讯号，其中，所述影像讯 号用以驱动所述液晶显示面板产生对应影像，并且所述背光驱动讯号用以驱动对应于所述背光模组的所述发光二极管模组的所述多个发光区域。
  7. 一种发光装置，包含：
    驱动单元，其用来依据来源输出光源驱动讯号；
    光源模组，其包含发光二极管模组，且所述光源驱动讯号用以驱动对应于所述光源模组的所述发光二极管模组的多个发光区域；
    转换单元，其耦接于所述驱动单元及所述光源模组；以及
    补偿校正单元，其耦接于所述转换单元，所述转换单元利用所述补偿校正单元将所述光源驱动讯号转化为多个调变光源驱动讯号，以驱动对应于所述发光二极管模组的每一发光区域。
  8. 根据权利要求7所述的发光装置，其中，所述发光二极管模组具有多个发光二极管，所述补偿校正单元具有第一补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管的不均匀特性的发光调整数据。
  9. 根据权利要求8所述的发光装置，其中，所述转换单元利用所述补偿校正单元的所述第一补偿校正模组将所述光源驱动讯号转化为所述多个调变光源驱动讯号。
  10. 根据权利要求8所述的发光装置，其中，所述发光二极管模组还具有多个发光二极管驱动元件，所述多个发光二极管驱动元件用以驱动位于对应的发光区域内的发光二极管，所述补偿校正单元更具有第二补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管驱动元件的不均匀特性的驱动调整数据。
  11. 根据权利要求10所述的发光装置，其中，所述转换单元同时利用所述补偿校正单元的所述第一补偿校正模组与所述第二补偿校正模组，将所述光源驱动讯号转化为所述多个调变光源驱动讯号。
  12. 一种显示装置，包含：
    液晶显示面板；
    驱动单元，其耦接于所述液晶显示面板，且用来依据影像来源输出影像讯号及背光驱动讯号，其中所述影像讯号用以驱动所述液晶显示面板产生对应影像；
    背光模组，其包含发光二极管模组，且所述背光驱动讯号用以驱动对应于所述背光模组的所述发光二极管模组的多个发光区域；
    转换单元，其耦接于所述驱动单元及所述背光模组；以及
    补偿校正单元，其耦接于所述转换单元，所述转换单元利用所述补偿校正单元将所述背光驱动讯号转化为多个调变背光驱动讯号，以驱动对应于所述发光二极管模组的每一发光区域。
  13. 根据权利要求12所述的显示装置，其中，所述显示装置的时序控制器包含所述驱动单元，且所述转换单元及所述补偿校正单元是独立于所述时序控制器之外。
  14. 根据权利要求12所述的显示装置，其中，所述显示装置的时序控制器包含所述驱动单元、所述转换单元及所述补偿校正单元。
  15. 根据权利要求12所述的显示装置，其中，所述发光二极管模组具有多个发光二极管，所述补偿校正单元具有第一补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管的不均匀特性的发光调整数据。
  16. 根据权利要求15所述的显示装置，其中，所述转换单元利用所述补偿校正单元的所述第一补偿校正模组将所述背光驱动讯号转化为所述多个调变背光驱动讯号。
  17. 根据权利要求15所述的显示装置，其中，所述发光二极管模组还具有多个发光二极管驱动元件，所述多个发光二极管驱动元件用以驱动位于对应的发光区域内的发光二极管，所述补偿校正单元更具有第二补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管驱动元件的不均匀特性的驱动调整数据。
  18. 根据权利要求17所述的显示装置，其中，所述转换单元同时利用所述补偿校正单元的所述第一补偿校正模组与所述第二补偿校正模组，将所述光源驱动讯号转化为所述多个调变光源驱动讯号。
  19. 一种显示系统，包含显示装置及影像来源产生装置，所述显示装置包含驱动单元、背光模组及液晶显示面板，其中，所述背光模组包含发光二极管模组，所述影像来源产生装置包含影像处理器、转换单元及补偿校正单元，其中：
    所述影像处理器用来依据影像来源输出影像讯号及背光驱动讯号；
    所述转换单元耦接于所述影像处理器；
    所述补偿校正单元耦接于所述转换单元，所述转换单元利用所述补偿校正单元将所述背光驱动讯号转化为多个调变背光驱动讯号；
    所述驱动单元耦接于所述液晶显示面板与所述背光模组，用以将所述影像讯号与所述多个调变背光驱动讯号分别送往所述液晶显示面板与所述背光模组，其中，所述影像讯号用以驱动所述液晶显示面板产生对应影像，所述多个调变背光驱动讯号用以驱动对应于所述发光二极管模组的多个发光区域。
  20. 根据权利要求19所述的显示系统，其中，所述显示装置的时序控制器包含所述驱动单元，且所述转换单元及所述补偿校正单元是独立于所述时序控制器之外。
  21. 根据权利要求19所述的显示系统，其中，所述发光二极管模组具有多个发光二极管，所述补偿校正单元具有第一补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管的不均匀特性的发光调整数据。
  22. 根据权利要求21所述的显示系统，其中，所述转换单元利用所述补偿校正单元的所述第一补偿校正模组将所述背光驱动讯号转化为所述多个调变背光驱动讯号。
  23. 根据权利要求21所述的显示系统，其中，所述发光二极管模组还具有多个发光二极管驱动元件，所述多个发光二极管驱动元件用以驱动位于对应的发光区域内的发光二极管，所述补偿校正单元更具有第二补偿校正模组，其用来存取所述发光二极管模组的所述多个发光二极管驱动元件的不均匀特性的驱动调整数据。
  24. 根据权利要求23所述的显示系统，其中，所述转换单元同时利用所述补偿校正单元的所述第一补偿校正模组与所述第二补偿校正模组，将所述背光驱动讯号转化为所述多个调变背光驱动讯号。
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