WO2016078075A1 - 显示装置及其亮度调节方法 - Google Patents

显示装置及其亮度调节方法 Download PDF

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Publication number
WO2016078075A1
WO2016078075A1 PCT/CN2014/091882 CN2014091882W WO2016078075A1 WO 2016078075 A1 WO2016078075 A1 WO 2016078075A1 CN 2014091882 W CN2014091882 W CN 2014091882W WO 2016078075 A1 WO2016078075 A1 WO 2016078075A1
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real
current value
time
level
image data
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PCT/CN2014/091882
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English (en)
French (fr)
Inventor
徐京
黄泰钧
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深圳市华星光电技术有限公司
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Priority to US14/426,099 priority Critical patent/US20160365036A1/en
Publication of WO2016078075A1 publication Critical patent/WO2016078075A1/zh

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Classifications

    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3283—Details of drivers for data electrodes in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display device, and to a brightness adjustment method of the display device.
  • OLED Organic Light-Emitting Diode, organic electro-optic display
  • ITO indium tin oxide
  • the transparent electrode and the metal electrode serve as the anode and cathode of the device, respectively.
  • electrons and holes are injected from the cathode and the anode to the electron and hole transport layers, respectively, and electrons and holes pass through the electron and hole transport layers, respectively. It migrates to the luminescent layer and meets in the luminescent layer to form excitons and excite the luminescent molecules, which undergo radiation relaxation to emit visible light. Radiation light can be observed from the ITO side, and the metal electrode film also functions as a reflective layer.
  • OLED displays utilize current through thin films of organic materials to produce light, different organic materials emit light of different colors, along with OLEDs.
  • the use of the display the organic material in the device is aged, and the luminous efficiency is lowered, which shortens the service life of the display device.
  • Different organic materials may age at different speeds, resulting in varying degrees of color aging, and the white field of the display varies with the use of the display.
  • each pixel may age at a different rate than other pixels, resulting in display unevenness. Therefore, OLED The display must have compensation to maintain its performance.
  • a compensation method is generally adopted, such as an OLED display, including:
  • Display panel which is based on OLED a data processor that processes image data from a video source and compensation data from a compensation unit and outputs compensated image data; a timing controller (TCON) that generates a timing control signal based on an output of the data processor; Driver), which drives the display panel according to the timing control signal; a display measurement module that measures display uniformity of the display panel; and a compensation unit that generates compensation data according to the measurement result of the display measurement module and transmits the compensation data to the data processor.
  • TCON timing controller
  • Driver which drives the display panel according to the timing control signal
  • a display measurement module that measures display uniformity of the display panel
  • a compensation unit that generates compensation data according to the measurement result of the display measurement module and transmits the compensation data to the data processor.
  • embodiments of the present invention provide a display device and a brightness adjustment method thereof for performing accurate brightness adjustment, and at the same time solving technical problems of aging and high energy consumption.
  • an embodiment of the present invention provides a display device, including a display panel, the display device further includes:
  • a detecting module configured to detect a real-time current value when the display panel is in operation
  • control module connected to the detection module, configured to generate a corresponding control signal according to the magnitude of the real-time current value
  • the driving module is electrically connected to the control module and the display panel, respectively, for determining a real-time voltage of a corresponding level according to the control signal, and outputting a real-time voltage of a corresponding level to drive the display panel to work;
  • a conversion module is disposed between the detection module and the control module and electrically connected to convert the externally input image data into a corresponding predetermined level according to the magnitude of the real-time current value.
  • the conversion module is specifically configured to convert image data of 8-bit color depth into image data of one of predetermined levels of 10-bit color depth;
  • the control module is specifically configured to generate the corresponding control signal according to the predetermined level.
  • the embodiment of the present invention further provides a display device, including a display panel, the display device further includes: a detecting module, configured to detect a real-time current value when the display panel is in operation; and a control module connected to the detecting module, Corresponding to generate a corresponding control signal according to the magnitude of the real-time current value; the driving module is electrically connected to the control module and the display panel, respectively, for determining a real-time voltage of a corresponding level according to the control signal, and outputting a corresponding The level of real-time voltage drives the display panel to work.
  • a detecting module configured to detect a real-time current value when the display panel is in operation
  • a control module connected to the detecting module, Corresponding to generate a corresponding control signal according to the magnitude of the real-time current value
  • the driving module is electrically connected to the control module and the display panel, respectively, for determining a real-time voltage of a corresponding level according to the control signal, and outputting a corresponding The level of
  • the display device further includes: a conversion module, disposed between the detection module and the control module and electrically connected, respectively, configured to convert externally input image data into corresponding according to the magnitude of the real-time current value a predetermined level; wherein the control module is specifically configured to generate the corresponding control signal according to the predetermined level.
  • a conversion module disposed between the detection module and the control module and electrically connected, respectively, configured to convert externally input image data into corresponding according to the magnitude of the real-time current value a predetermined level
  • the control module is specifically configured to generate the corresponding control signal according to the predetermined level.
  • the display device further includes: a storage module, configured to store a plurality of real-time current values and a corresponding conversion mode between the plurality of predetermined levels, such that the conversion module is configured according to the magnitude of the real-time current value After determining the corresponding predetermined level in the storage module, the image data is converted according to the predetermined level.
  • a storage module configured to store a plurality of real-time current values and a corresponding conversion mode between the plurality of predetermined levels, such that the conversion module is configured according to the magnitude of the real-time current value After determining the corresponding predetermined level in the storage module, the image data is converted according to the predetermined level.
  • the plurality of real-time current values includes at least one power-saving current value and one aging current value, and at least one of the predetermined levels includes a power-saving level and an aging level, and the power-saving current value is used for corresponding non-aging time.
  • a power saving level where the aging current value is used to correspond to an aging level in the aging process, wherein the power saving current value is greater than the aging current value, and the real-time voltage corresponding to the power saving level is smaller than the aging level Real-time voltage.
  • the conversion module is specifically configured to convert image data of 8-bit color depth into image data of one of predetermined levels of 10-bit color depth.
  • an embodiment of the present invention further provides a brightness adjustment method for a display device, where the brightness adjustment method includes: detecting a real-time current value when the display panel is in operation; and generating corresponding control according to the magnitude of the real-time current value. a signal; determining a real-time voltage of a corresponding level according to the control signal, and outputting a real-time voltage of a corresponding level to drive the display panel to work.
  • the step of generating a corresponding control signal according to the magnitude of the real-time current value specifically: converting externally input image data into a corresponding predetermined level according to the magnitude of the real-time current value; according to the predetermined level
  • the corresponding control signal is generated.
  • the brightness adjustment method further includes: storing a plurality of real-time current values and a corresponding conversion mode between the plurality of predetermined levels to determine a corresponding predetermined level according to the magnitude of the real-time current value, according to the predetermined Level conversion image data.
  • the plurality of real-time current values includes at least one power-saving current value and one aging current value, and at least one of the predetermined levels includes a power-saving level and an aging level, and the power-saving current value is used for corresponding non-aging time.
  • a power saving level where the aging current value is used to correspond to an aging level in the aging process, wherein the power saving current value is greater than the aging current value, and the real-time voltage corresponding to the power saving level is smaller than the aging level Real-time voltage.
  • the step of converting the externally input image data into a corresponding predetermined level according to the magnitude of the real-time current value includes: converting the image data of the 8-bit color depth into one of the predetermined levels of the 10-bit color depth. Image data.
  • the beneficial effects of the embodiments of the present invention are: the embodiment of the present invention can detect the real-time current according to the real-time situation when the display panel is used, and change the real-time voltage of the driving display panel by the feedback real-time current, thereby ensuring that the real-time voltage can be provided.
  • the required real-time voltage is used to avoid the problem that the voltage is fixed, the current is reduced, and the brightness is lowered during aging, and at the same time, the energy saving effect can be achieved when the aging is not performed.
  • FIG. 1 is a schematic block diagram of an embodiment of a display device of the present invention.
  • FIG. 2A is a schematic view showing the working principle of a specific application example of the display device shown in FIG. 1, wherein the working mode when the aging is not performed is shown;
  • FIG. 2B is a schematic view showing the working principle of a specific application example of the display device shown in FIG. 1, wherein the working mode when aging is displayed
  • FIG. 3 is a flow chart showing an embodiment of a method for adjusting brightness of a display device of the present invention.
  • FIG. 1 is a schematic diagram of a module of an embodiment of the present invention.
  • the display device includes, but is not limited to, a display panel, a detection module 10, a conversion module 11, a storage module 12, a control module 13, and a driving module 14. .
  • the detecting module 10 is configured to detect a real-time current value when the display panel is in operation;
  • the control module 13 is connected to the detecting module 10, and is configured to generate a corresponding control signal according to the magnitude of the real-time current value.
  • the driving module 14 is electrically connected to the control module 13 and the display panel respectively for determining a real-time voltage of a corresponding level according to the control signal, and outputting a real-time voltage driving display panel corresponding to the level.
  • control module 13 may specifically be a timing controller
  • driving module 14 may specifically be a source driver
  • the real-time current is the current of the OLED display panel.
  • the conversion module 11 is disposed between the detection module 10 and the control module 13 and electrically connected to convert the externally input image data into a corresponding predetermined level according to the real-time current value;
  • the module 13 is specifically configured to generate a corresponding control signal according to a predetermined level.
  • the storage module 12 is configured to store a plurality of real-time current values and a corresponding conversion mode between the plurality of predetermined levels, so that the conversion module 11 determines the corresponding predetermined level from the storage module 12 according to the magnitude of the real-time current value, according to the predetermined Level conversion image data.
  • the plurality of real-time current values include at least one power-saving current value and one aging current value, and at least one of the plurality of predetermined levels includes a power-saving level and an aging level, and the power-saving current value is used for corresponding non-aging power saving.
  • the aging current value is used to correspond to the aging level of the aging.
  • the power saving current value is greater than the aging current value, and the real-time voltage corresponding to the power saving level is smaller than the real-time voltage corresponding to the aging level. It is not difficult to understand that when the display panel is not aged, its brightness is sufficient at the rated working voltage and may be bright, resulting in excessive current and unnecessary energy consumption.
  • the rated working voltage is lowered to achieve the effect of energy saving; conversely, when the display panel is aged, due to the large resistance, the current is small at the rated working voltage, resulting in insufficient brightness, so that the voltage can be used at this time. Up-regulation, so that its real-time current reaches the size required by the display panel to ensure the user's experience.
  • the conversion module 11 is specifically configured to convert image data of 8-bit color depth into image data of one of predetermined levels of 10-bit color depth.
  • the conversion module 11 is preferably 8-- 10bits converter. It is not difficult to understand that the present embodiment can solve the technical problem caused by aging to some extent by changing the color depth through the conversion module 11.
  • FIG. 2A is a schematic diagram showing the working principle of a specific application example of the display device shown in FIG. 1 , wherein the working mode is shown when the battery is not aged
  • FIG. 2B is a display device shown in FIG. 1 .
  • the conversion module 11 selects a conversion relationship according to the aging information fed back by the real-time current, and searches for a corresponding value from the storage module 12 to perform 8-10 bit conversion, for example, under normal conditions.
  • 8bit 255 is converted to 10bit 768; aging is slight, 8bit 255 is converted to 10bit 896; aging is severe, 8bit 255 is converted to 10bit 1023.
  • the real-time voltage of the output is: when not aging, 8bit 255 is converted to 10bit 768, the output real-time voltage is VGMA3; slightly aging, 8bit 255 is converted to 10bit 896, the output real-time voltage is VGMA2; the aging is serious, 8bit 255 is converted to 10bit 1023, the output real-time voltage is VGMA1, etc., and will not be described in detail herein.
  • the embodiment of the present invention can detect the real-time current according to the real-time situation when the display panel is used, and change the real-time voltage of the driving display panel by the feedback real-time current, thereby ensuring that the required real-time voltage can be provided for work, and avoiding
  • the current is reduced, the current is lowered, and the brightness is lowered, and at the same time, the energy saving effect can be achieved when the aging is not performed.
  • FIG. 3 is a schematic flowchart of a method for adjusting the brightness of the display device of the present invention.
  • the brightness adjustment method includes but is not limited to the following steps.
  • Step S300 detecting a real-time current value when the display panel is in operation.
  • Step S301 generating a corresponding control signal according to the magnitude of the real-time current value.
  • the embodiment may specifically convert the externally input image data into a corresponding predetermined level according to the magnitude of the real-time current value; and generate a corresponding control signal according to the predetermined level.
  • a plurality of real-time current values and a corresponding conversion mode between the plurality of predetermined levels may be stored in advance to convert the image data according to the predetermined level after determining the corresponding predetermined level according to the magnitude of the real-time current value.
  • the setting of the plurality of real-time current values can be set according to the performance of the detection or display panel.
  • the plurality of real-time current values include at least one power-saving current value and one aging current value, and at least one of the predetermined levels includes a power-saving level and an aging level, and the power-saving current value is used for the corresponding non-aging time.
  • the power-saving level and the aging current value are used for the aging level corresponding to the aging.
  • the power-saving current value is greater than the aging current value, and the real-time voltage corresponding to the power-saving level is smaller than the real-time voltage corresponding to the aging level.
  • the conversion module 11 is specifically configured to convert image data of 8-bit color depth into image data of one of predetermined levels of 10-bit color depth.
  • the conversion module 11 is preferably 8-- 10bits converter. It is not difficult to understand that the present embodiment can solve the technical problem caused by aging to some extent by changing the color depth through the conversion module 11.
  • FIG. 2A is a schematic diagram showing the working principle of a specific application example of the display device shown in FIG. 1 , wherein the working mode is shown when the battery is not aged
  • FIG. 2B is the display device shown in FIG. 1 .
  • the conversion module 11 selects a conversion relationship according to the aging information fed back by the real-time current, and searches for a corresponding value from the storage module 12 to perform 8-10 bit conversion, for example, under normal conditions.
  • 8bit 255 is converted to 10bit 768; aging is slight, 8bit 255 is converted to 10bit 896; aging is severe, 8bit 255 is converted to 10bit 1023.
  • the real-time voltage of the output is: when not aging, 8bit 255 is converted to 10bit 768, the output real-time voltage is VGMA3; slightly aging, 8bit 255 is converted to 10bit 896, the output real-time voltage is VGMA2; the aging is serious, 8bit 255 is converted to 10bit 1023, the output real-time voltage is VGMA1, etc., and will not be described in detail herein.
  • Step S302 determining a real-time voltage of a corresponding level according to the control signal, and outputting a real-time voltage driving display panel corresponding to the level.
  • the embodiment of the present invention can detect the real-time current according to the real-time situation when the display panel is used, and change the real-time voltage of the driving display panel by the feedback real-time current, thereby ensuring that the required real-time voltage can be provided for work, and avoiding
  • the current is reduced, the current is lowered, and the brightness is lowered, and at the same time, the energy saving effect can be achieved when the aging is not performed.

Abstract

一种显示装置及其亮度调节方法，亮度调节方法包括：检测显示面板工作时的实时电流值（S300）；根据实时电流值的大小产生对应的控制信号（S301）；根据控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动显示面板工作（S302）。根据显示面板使用时的实时情况，检测实时电流，通过反馈的实时电流去改变驱动显示面板的实时电压，从而确保能够提供所需要的实时电压进行工作，避免老化时电压固定而电流降低、亮度降低的问题，同时在未老化时能够起到很好的节能效果。

Description

显示装置及其亮度调节方法
【技术领域】
本发明属于显示技术领域，具体涉及一种显示装置，还涉及该显示装置的亮度调节方法。
【背景技术】
OLED （Organic Light-Emitting Diode，有机电激光显示）显示器的发光原理是用ITO( 氧化铟锡) 透明电极和金属电极分别作为器件的阳极和阴极，在一固定电压驱动下，电子和空穴分别从阴极和阳极注入到电子和空穴传输层，电子和空穴分别经过电子和空穴传输层迁移到发光层，并在发光层中相遇，形成激子并使发光分子激发，后者经过辐射弛豫而发出可见光。辐射光可从ITO一侧观察到，金属电极膜同时也起了反射层的作用。
由于OLED 显示器利用通过有机材料薄膜的电流来产生光，不同的有机材料发射不同颜色的光，随着OLED 显示器的使用，器件中的有机材料老化，同时发光效率会变低，缩短了显示器件的使用寿命。不同有机材料可能以不同速度老化，进而导致不同程度的颜色老化，并且显示器的白场随着显示器的使用而变化。另外，各个像素可能以不同于其它像素的速率老化，导致显示不均匀。因此，OLED 显示器必须具有补偿措施来保持其性能。
现有技术中，为了解决老化所带来的显示的问题，一般采用补偿的方式，如OLED 显示器包括：
显示面板、 其设有基于OLED 的像素；数据处理器，处理来自视频源的影像数据以及来自补偿单元的补偿数据，并输出经补偿的影像数据；时序控制器（TCON），根据数据处理器的输出生成时序控制信号；驱动器（Driver），其根据时序控制信号驱动显示面板；显示测量模块，其测量显示面板的显示均匀性；补偿单元，其根据显示测量模块的测量结果生成补偿数据并传输给数据处理器。
但是，如果按照现有的方式进行老化补偿，因为通过驱动器的集成电路（IC）进行补偿最少就是一阶，转换为电流后，相近两阶的电流差异较大，从而导致无法精确补偿；而且在未老化的OLED显示器上，此种方式解决不了能量消耗较大的技术问题。
因此，本技术领域亟需一种新的显示装置，以解决老化所带来的技术问题。
【发明内容】
有鉴于此，本发明实施例提供一种显示装置及其亮度调节方法，以进行精确的亮度调整，同时解决老化和能耗大的技术问题。
为解决上述技术问题，本发明实施例提供了一种显示装置，包括显示面板，所述显示装置还包括：
检测模块，用于检测所述显示面板工作时的实时电流值；
控制模块，与所述检测模块相连接，用于根据所述实时电流值的大小产生对应的控制信号；
驱动模块，分别与所述控制模块和所述显示面板电连接，用于根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作;
转换模块，设于所述检测模块和所述控制模块之间并分别电连接，用于根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别, 所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据；
其中，所述控制模块具体用于根据所述预定级别产生所述对应的控制信号。
本发明实施例又提供一种显示装置，包括显示面板，所述显示装置还包括：检测模块，用于检测所述显示面板工作时的实时电流值；控制模块，与所述检测模块相连接，用于根据所述实时电流值的大小产生对应的控制信号；驱动模块，分别与所述控制模块和所述显示面板电连接，用于根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作。
其中，所述显示装置还包括：转换模块，设于所述检测模块和所述控制模块之间并分别电连接，用于根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；其中，所述控制模块具体用于根据所述预定级别产生所述对应的控制信号。
其中，所述显示装置还包括：存储模块，用于存储多个实时电流值及其对应的多个预定级别之间的转换模式，使得所述转换模块根据所述实时电流值的大小从所述存储模块中确定对应的预定级别之后，根据所述预定级别转换影像数据。
其中，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，所述省电电流值用于对应非老化时的省电级别，所述老化电流值用于对应老化时的老化级别，其中，所述省电电流值大于所述老化电流值，所述省电级别所对应的实时电压小于所述老化级别所对应的实时电压。
其中，所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
为解决上述技术问题，本发明实施例还提供一种显示装置的亮度调节方法，所述亮度调节方法包括：检测显示面板工作时的实时电流值；根据所述实时电流值的大小产生对应的控制信号；根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作。
其中，所述根据所述实时电流值的大小产生对应的控制信号的步骤，具体包括：根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；根据所述预定级别产生所述对应的控制信号。
其中，所述亮度调节方法还包括：存储多个实时电流值及其对应的多个预定级别之间的转换模式，以根据所述实时电流值的大小确定对应的预定级别之后，根据所述预定级别转换影像数据。
其中，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，所述省电电流值用于对应非老化时的省电级别，所述老化电流值用于对应老化时的老化级别，其中，所述省电电流值大于所述老化电流值，所述省电级别所对应的实时电压小于所述老化级别所对应的实时电压。
其中，所述根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别的步骤，具体包括：将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
通过上述技术方案，本发明实施例的有益效果是：本发明实施例能够根据显示面板使用时的实时情况，检测实时电流，通过反馈的实时电流去改变驱动显示面板的实时电压，从而确保能够提供所需要的实时电压进行工作，避免老化时电压固定而电流降低、亮度降低的问题，同时在未老化时能够起到很好的节能效果。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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是本发明显示装置一实施例的模块示意图；
图2A是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了未老化时的工作方式；
图2B是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了老化时的工作方式
图3是本发明显示装置的亮度调节方法一实施例的流程示意图。
【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，本发明以下所描述的实施例仅仅是本发明的一部分实施例，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付出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1，图1是本发明显示装置一实施例的模块示意图，本实施例显示装置包括但不限于显示面板、检测模块10、转换模块11、存储模块12、控制模块13和驱动模块14。
需要说明的是，本实施例中，检测模块10，用于检测显示面板工作时的实时电流值；控制模块13，与检测模块10相连接，用于根据实时电流值的大小产生对应的控制信号；驱动模块14，分别与控制模块13和显示面板电连接，用于根据控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动显示面板工作。
在本实施例中，控制模块13具体可以为时序控制器，驱动模块14具体可以为源极驱动器，实时电流为OLED显示面板的电流。
在具体的实现过程中，转换模块11，设于检测模块10和控制模块13之间并分别电连接，用于根据实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；控制模块13具体用于根据预定级别产生对应的控制信号。存储模块12，用于存储多个实时电流值及其对应的多个预定级别之间的转换模式，使得转换模块11根据实时电流值的大小从存储模块12中确定对应的预定级别之后，根据预定级别转换影像数据。
其中，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，省电电流值用于对应非老化时的省电级别，老化电流值用于对应老化时的老化级别，其中，省电电流值大于老化电流值，省电级别所对应的实时电压小于老化级别所对应的实时电压。不难理解的是，在显示面板未老化时，其在额定工作电压下亮度充足而且可能会偏亮，导致电流过大而产生不必要的能量耗费，因此，在实际的使用过程中，可以在一定程度上降低其额定工作电压，达到节能的效果；反过来，在显示面板老化时，由于电阻大，所以在额定工作电压下其电流较小，导致亮度不足，因此，此时可以将其电压上调，而使其实时电流达到显示面板所需的大小，保证用户的使用体验。
需要指出的是，转换模块11具体用于将8位（bit）色深的影像数据转换为10位色深的其中一个预定级别的影像数据，换而言之，转换模块11优选地为8-10bits的转换器。不难理解的是，本实施例通过转换模块11，通过改变色深的方式，也可以在一定程度上解决老化所带来的技术问题。
举例而言，请参阅图2A和2B，图2A是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了未老化时的工作方式，图2B是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了老化时的工作方式。
其中，转换模块11根据实时电流所反馈的老化信息，选择转换关系，并从存储模块12中查找对应数值，进行8-10bits转换，例如：在正常情况下， 8bit 255转换为10bit 768；老化轻微，8bit 255转换为10bit 896；老化严重， 8bit 255转换为10bit 1023。
对应地，其输出的实时电压分别为：未老化时，8bit 255转换为10bit 768，输出实时电压为VGMA3；轻微老化，8bit 255转换为10bit 896，输出实时电压为VGMA2；老化严重，8bit 255转换为10bit 1023，输出实时电压为VGMA1等等，在此不作细述。其中，可以理解的是：VGMA1 ≥ VGMA2 ≥ VGMA3 ≥ VGMA4 ≥ VGMA5 ≥ VGMA6 ≥ VGMA7 ≥ VGMA8 ≥ VGMA9。
综上所述，本发明实施例能够根据显示面板使用时的实时情况，检测实时电流，通过反馈的实时电流去改变驱动显示面板的实时电压，从而确保能够提供所需要的实时电压进行工作，避免老化时电压固定而电流降低、亮度降低的问题，同时在未老化时能够起到很好的节能效果。
请接着参阅图3，图3是本发明显示装置的亮度调节方法一实施例的流程示意图，在本实施例中，亮度调节方法包括但不限于以下步骤。
步骤S300，检测显示面板工作时的实时电流值。
步骤S301，根据实时电流值的大小产生对应的控制信号。
在步骤S301中，本实施例具体可以根据实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；根据预定级别产生对应的控制信号。
需要说明的是，本实施例可以预先存储多个实时电流值及其对应的多个预定级别之间的转换模式，以根据实时电流值的大小确定对应的预定级别之后，根据预定级别转换影像数据。其中，多个实时电流值的设置可以根据检测或者显示面板的性能而设定。
进一步而言，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，省电电流值用于对应非老化时的省电级别，老化电流值用于对应老化时的老化级别，其中，省电电流值大于老化电流值，省电级别所对应的实时电压小于老化级别所对应的实时电压。
不难理解的是，在显示面板未老化时，其在额定工作电压下亮度充足而且可能会偏亮，导致电流过大而产生不必要的能量耗费，因此，在实际的使用过程中，可以在一定程度上降低其额定工作电压，达到节能的效果；反过来，在显示面板老化时，由于电阻大，所以在额定工作电压下其电流较小，导致亮度不足，因此，此时可以将其电压上调，而使其实时电流达到显示面板所需的大小，保证用户的使用体验。
需要指出的是，转换模块11具体用于将8位（bit）色深的影像数据转换为10位色深的其中一个预定级别的影像数据，换而言之，转换模块11优选地为8-10bits的转换器。不难理解的是，本实施例通过转换模块11，通过改变色深的方式，也可以在一定程度上解决老化所带来的技术问题。
举例而言，请再次参阅图2A和2B，图2A是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了未老化时的工作方式，图2B是图1所示显示装置一具体应用例的工作原理示意图，其中，显示了老化时的工作方式。
其中，转换模块11根据实时电流所反馈的老化信息，选择转换关系，并从存储模块12中查找对应数值，进行8-10bits转换，例如：在正常情况下， 8bit 255转换为10bit 768；老化轻微，8bit 255转换为10bit 896；老化严重， 8bit 255转换为10bit 1023。
对应地，其输出的实时电压分别为：未老化时，8bit 255转换为10bit 768，输出实时电压为VGMA3；轻微老化，8bit 255转换为10bit 896，输出实时电压为VGMA2；老化严重，8bit 255转换为10bit 1023，输出实时电压为VGMA1等等，在此不作细述。其中，可以理解的是：VGMA1 ≥ VGMA2 ≥ VGMA3 ≥ VGMA4 ≥ VGMA5 ≥ VGMA6 ≥ VGMA7 ≥ VGMA8 ≥ VGMA9。
步骤S302，根据控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动显示面板工作。
综上所述，本发明实施例能够根据显示面板使用时的实时情况，检测实时电流，通过反馈的实时电流去改变驱动显示面板的实时电压，从而确保能够提供所需要的实时电压进行工作，避免老化时电压固定而电流降低、亮度降低的问题，同时在未老化时能够起到很好的节能效果。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (19)

  1. 一种显示装置，包括显示面板，所述显示装置还包括：
    检测模块，用于检测所述显示面板工作时的实时电流值；
    控制模块，与所述检测模块相连接，用于根据所述实时电流值的大小产生对应的控制信号；
    驱动模块，分别与所述控制模块和所述显示面板电连接，用于根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作;
    转换模块，设于所述检测模块和所述控制模块之间并分别电连接，用于根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别, 所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据；
    其中，所述控制模块具体用于根据所述预定级别产生所述对应的控制信号。
  2. 一种显示装置，包括显示面板，所述显示装置还包括：
    检测模块，用于检测所述显示面板工作时的实时电流值；
    控制模块，与所述检测模块相连接，用于根据所述实时电流值的大小产生对应的控制信号；
    驱动模块，分别与所述控制模块和所述显示面板电连接，用于根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作。
  3. 根据权利要求2所述的显示装置，其中，所述显示装置还包括：
    转换模块，设于所述检测模块和所述控制模块之间并分别电连接，用于根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；
    其中，所述控制模块具体用于根据所述预定级别产生所述对应的控制信号。
  4. 根据权利要求3所述的显示装置，其中，所述显示装置还包括：
    存储模块，用于存储多个实时电流值及其对应的多个预定级别之间的转换模式，使得所述转换模块根据所述实时电流值的大小从所述存储模块中确定对应的预定级别之后，根据所述预定级别转换影像数据。
  5. 根据权利要求4所述的显示装置，其中，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，所述省电电流值用于对应非老化时的省电级别，所述老化电流值用于对应老化时的老化级别。
  6. 根据权利要求5所述的显示装置，其中，所述省电电流值大于所述老化电流值。
  7. 根据权利要求6所述的显示装置，其中，所述省电级别所对应的实时电压小于所述老化级别所对应的实时电压。
  8. 根据权利要求5所述的显示装置，其中，所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
  9. 根据权利要求6所述的显示装置，其中，所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
  10. 根据权利要求7所述的显示装置，其中，所述转换模块具体用于将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
  11. 一种显示装置的亮度调节方法，，所述亮度调节方法包括：
    检测显示面板工作时的实时电流值；
    根据所述实时电流值的大小产生对应的控制信号；
    根据所述控制信号确定对应级别的实时电压，并输出对应级别的实时电压驱动所述显示面板工作。
  12. 根据权利要求11所述的亮度调节方法，其中，所述根据所述实时电流值的大小产生对应的控制信号的步骤，具体包括：
    根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别；
    根据所述预定级别产生所述对应的控制信号。
  13. 根据权利要求12所述的亮度调节方法，其中，所述亮度调节方法还包括：
    存储多个实时电流值及其对应的多个预定级别之间的转换模式，以根据所述实时电流值的大小确定对应的预定级别之后，根据所述预定级别转换影像数据。
  14. 根据权利要求13所述的亮度调节方法，其中，多个实时电流值中至少包括一省电电流值和一老化电流值，多个预定级别中至少包括一省电级别和一老化级别，所述省电电流值用于对应非老化时的省电级别，所述老化电流值用于对应老化时的老化级别。
  15. 根据权利要求14所述的亮度调节方法，其中，所述省电电流值大于所述老化电流值。
  16. 根据权利要求15所述的亮度调节方法，其中，所述省电级别所对应的实时电压小于所述老化级别所对应的实时电压。
  17. 根据权利要求14所述的亮度调节方法，其中，所述根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别的步骤，具体包括：
    将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
  18. 根据权利要求15所述的亮度调节方法，其中，所述根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别的步骤，具体包括：
    将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
  19. 根据权利要求16所述的亮度调节方法，其中，所述根据所述实时电流值的大小，将外部输入的影像数据转换为对应的预定级别的步骤，具体包括：
    将8位色深的影像数据转换为10位色深的其中一个预定级别的影像数据。
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