WO2022252179A1 - 显示装置及其驱动方法、驱动装置、显示设备 - Google Patents

显示装置及其驱动方法、驱动装置、显示设备 Download PDF

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Publication number
WO2022252179A1
WO2022252179A1 PCT/CN2021/098114 CN2021098114W WO2022252179A1 WO 2022252179 A1 WO2022252179 A1 WO 2022252179A1 CN 2021098114 W CN2021098114 W CN 2021098114W WO 2022252179 A1 WO2022252179 A1 WO 2022252179A1
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WIPO (PCT)
Prior art keywords
displayed
grayscale
display
brightness
voltage
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PCT/CN2021/098114
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English (en)
French (fr)
Inventor
邢颖
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/778,908 priority Critical patent/US20240169938A1/en
Priority to PCT/CN2021/098114 priority patent/WO2022252179A1/zh
Priority to CN202180001424.8A priority patent/CN115707345A/zh
Publication of WO2022252179A1 publication Critical patent/WO2022252179A1/zh

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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
    • G09G3/36—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
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a display device, a driving method of the display device, a driving device, and a display device.
  • the traditional liquid crystal display (LCD, Liquid Crystal Display) has a small color gamut in the low brightness range, and the color gamut of the LCD will gradually increase as the gray scale increases; when the gray scale rises to a certain value, the color gamut reach a maximum and hold steady.
  • the red (Red), green (Green), and blue (Blue) color coordinates of the LCD do not change in the same way, which makes the LCD easy to display in the low-brightness range. Problems such as color distortion, loss of details in dark parts, and color temperature jumps occur, which seriously affect the color reproduction ability of LCD.
  • Embodiments of the present disclosure provide a display device, a driving method of the display device, a driving device, and a display device.
  • an embodiment of the present disclosure provides a display device, the display device includes a display panel and a backlight arranged in sequence, and the backlight is arranged on the light incident side of the display panel; the display device is divided into At least one display area, the display panel is divided into at least one display unit, and the backlight is divided into at least one backlight unit; one display area includes at least one display unit and one backlight unit; one backlight unit The unit corresponds to at least one display unit; the backlight unit is used to provide a light source for the display unit; in one display area, at least one of the grayscale voltage of the display unit and the brightness of the backlight unit can be adjusted.
  • the grayscale voltage of the display unit is a preset voltage value; at least one of the grayscale voltage of the display unit and the brightness of the backlight unit can be adjusted include:
  • the brightness of the backlight unit can be adjusted according to the brightness to be displayed in the display area and the preset voltage value.
  • the brightness of the backlight unit is a preset brightness; at least one of the grayscale voltage of the display unit and the brightness of the backlight unit can be adjusted including:
  • the grayscale voltage of the display unit can be adjusted according to the grayscale corresponding to the brightness to be displayed in the display area and the preset brightness.
  • At least one of the grayscale voltage of the display unit and the brightness of the backlight unit can be adjusted including;
  • the grayscale voltage of the display unit can be adjusted according to the brightness to be displayed in the display area
  • the brightness of the backlight unit can be adjusted according to the brightness to be displayed in the display area and the grayscale voltage of the display unit.
  • an embodiment of the present disclosure provides a method for driving a display device
  • the display device includes a display panel and a backlight arranged sequentially stacked, and the backlight is arranged on the light-incident side of the display panel; the display The device is divided into at least one display area, the display panel is divided into at least one display unit, and the backlight source is divided into at least one backlight unit; one display area includes at least one display unit and one backlight unit; one The backlight unit corresponds to at least one display unit; the backlight unit is used to provide a light source for the display unit; in one display area, the driving method includes:
  • At least one of a grayscale voltage to be displayed of the display unit and a brightness of the backlight unit is determined according to the grayscale to be displayed.
  • the grayscale voltage to be displayed is a preset voltage value; the grayscale voltage to be displayed of the display unit and the backlight unit are determined according to the grayscale to be displayed at least one of the steps of brightness includes:
  • the brightness of the backlight unit is determined according to the gray scale to be displayed and the preset voltage value, so that the display area displays the brightness corresponding to the gray scale to be displayed.
  • the brightness of the backlight unit is a preset brightness; the grayscale voltage to be displayed of the display unit and the brightness of the backlight unit are determined according to the grayscale to be displayed At least one of the steps includes:
  • the voltage of the gray scale to be displayed is determined according to the gray scale to be displayed and the preset brightness, so that the display area displays a brightness corresponding to the gray scale to be displayed.
  • the step of determining at least one of the grayscale voltage to be displayed of the display unit and the brightness of the backlight unit according to the grayscale to be displayed includes: determining the grayscale voltage to be displayed according to the grayscale to be displayed. Grayscale voltage to be displayed;
  • the brightness of the backlight unit is determined according to the gray scale to be displayed and the gray scale voltage to be displayed, so that the display area displays the brightness corresponding to the gray scale to be displayed.
  • the step of determining the grayscale voltage to be displayed according to the grayscale to be displayed includes:
  • the grayscale voltage to be displayed is determined according to the grayscale mapping relationship between a plurality of low grayscales and at least one high grayscale, wherein the voltage of the grayscale to be displayed is lower than the low grayscale
  • the grayscale of the grayscale threshold is a low grayscale
  • the grayscale not lower than the low grayscale threshold is a high grayscale.
  • the grayscale mapping relationship includes a plurality of low grayscales all corresponding to a first target grayscale, and the first target grayscale is a high grayscale; according to multiple low grayscales and at least one high grayscale
  • the step of determining the gray-scale voltage to be displayed includes:
  • the gray-scale voltage corresponding to the first target gray-scale in a first mapping relationship as the gray-scale voltage to be displayed, wherein the first mapping relationship includes correspondence between multiple gray scales and multiple gray-scale voltages relation.
  • the grayscale mapping relationship includes a one-to-one correspondence between a plurality of low grayscales and a plurality of second target grayscales in the target grayscale interval in order of height, and the second target grayscale is a high grayscale ;
  • the step of determining the grayscale voltage to be displayed according to the grayscale mapping relationship between multiple low grayscales and at least one high grayscale includes:
  • the gray-scale voltage corresponding to the second target gray-scale corresponding to the gray-scale to be displayed in the first mapping relationship as the gray-scale voltage to be displayed wherein the first mapping relationship includes a plurality of gray-scale and The corresponding relationship of multiple grayscale voltages.
  • the step of determining the grayscale voltage to be displayed according to the grayscale to be displayed further includes:
  • the grayscale to be displayed is not lower than the low grayscale threshold, determine the grayscale voltage corresponding to the grayscale to be displayed in the first mapping relationship as the grayscale voltage to be displayed, wherein the The first mapping relationship includes correspondences between multiple gray scales and multiple gray scale voltages.
  • the step of adjusting the brightness of the backlight unit according to the gray scale to be displayed and the gray scale voltage to be displayed includes:
  • the step of determining the PWM duty cycle of the pulse width modulation to be displayed according to the gray scale to be displayed and the gray scale voltage to be displayed includes:
  • Fitting is performed according to the corresponding relationship between the gray scale, the gray scale voltage and the PWM duty cycle to determine the PWM duty cycle to be displayed.
  • an embodiment of the present disclosure provides a driving device, which is applied to a display device, and the display device includes a display panel and a backlight arranged sequentially in layers, and the backlight is arranged on the light-incident side of the display panel;
  • the display device is divided into at least one display area, the display panel is divided into at least one display unit, and the backlight source is divided into at least one backlight unit; one display area includes at least one display unit and one backlight unit one of the backlight units corresponds to at least one of the display units; the backlight unit is used to provide a light source for the display unit;
  • the display device is driven.
  • an embodiment of the present disclosure provides a display device, including any display device described in the first aspect of the embodiments of the present disclosure and the driving device described in the third aspect; the driving device is used to drive the display device to display.
  • FIG. 1 is a schematic diagram of a display device in an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a display device in an embodiment of the present disclosure
  • Fig. 3 is a flowchart of a driving method in an embodiment of the present disclosure
  • FIG. 4 is a flow chart of some steps in another driving method in an embodiment of the present disclosure.
  • Fig. 5 is a flowchart of some steps in another driving method in an embodiment of the present disclosure.
  • FIG. 6 is a flow chart of some steps in another driving method in an embodiment of the present disclosure.
  • FIG. 7 is a flow chart of some steps in another driving method in an embodiment of the present disclosure.
  • Fig. 8 is a flowchart of some steps in yet another driving method in an embodiment of the present disclosure.
  • FIG. 9 is a flow chart of some steps in another driving method in an embodiment of the present disclosure.
  • Fig. 10 is a schematic diagram of the color coordinates of white light changing with grayscale in an embodiment of the present disclosure
  • Fig. 11 is a schematic diagram of the color coordinates of red light changing with the grayscale in an embodiment of the present disclosure
  • Fig. 12 is a schematic diagram of the color coordinates of green light changing with the grayscale in the embodiment of the present disclosure
  • Fig. 13 is a schematic diagram showing the color coordinates of blue light changing with grayscale in an embodiment of the present disclosure
  • FIG. 14 is a schematic diagram of color gamuts corresponding to different gray scales according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a display device.
  • the display device includes a display panel 100 and a backlight 200 stacked in sequence.
  • the backlight 200 is arranged on the light-incident side of the display panel 100
  • the display device is divided into at least one display area, the display panel 100 is divided into at least one display unit 101, and the backlight source 200 is divided into at least one backlight unit 201; one display area includes at least one display unit 101 and one backlight unit 201
  • a backlight unit 201 corresponds to at least one display unit 101; the backlight unit 201 is used to provide a light source for the display unit 101; in one display area, at least one of the grayscale voltage of the display unit 101 and the brightness of the backlight unit 201 able to adjust.
  • one backlight unit 201 corresponds to one display area.
  • the backlight unit 201 is provided in one-to-one correspondence with the display unit 101 .
  • one backlight unit 201 corresponds to a plurality of display units 101 .
  • FIG. 1 and FIG. 2 are only exemplary illustrations of the display device provided by the embodiment of the present disclosure, and are not intended to limit the display device provided by the embodiment of the present disclosure.
  • the display panel 100 can also be divided into an entire display unit, and the backlight source 200 can be divided into an entire backlight unit.
  • the display device includes multiple pixels, and one display unit 101 may include one pixel or multiple pixels.
  • one backlight unit 201 may correspond to one pixel, or may correspond to multiple pixels.
  • the embodiments of the present disclosure make no special limitation on this.
  • each backlight unit 201 independently provides a light source for the corresponding display unit 101, and the light transmittance and backlight of the display unit 101 in each display area At least one of the brightness of the units 201 can be adjusted independently, so as to realize zoned light control.
  • the backlight unit 201 corresponds to the display unit 101 one-to-one, and one backlight unit 201 corresponds to one pixel, pixel-level divisional light control can be realized.
  • the embodiments of the present disclosure make no special limitation on this.
  • the display device can support 8-bit, 256-level grayscale; it can also support other grayscales.
  • the embodiments of the present disclosure make no special limitation on this.
  • the display panel 100 may be a liquid crystal display panel; may also be a light emitting diode (LED, Light-Emitting Diode) display panel; may also be a mini-LED display panel.
  • LED Light-Emitting Diode
  • the display panel 100 may be a liquid crystal display panel; may also be a light emitting diode (LED, Light-Emitting Diode) display panel; may also be a mini-LED display panel.
  • LED Light-Emitting Diode
  • the embodiment of the present disclosure does not make any special limitation on the backlight source 200 .
  • the backlight source 200 is an array composed of micro LEDs.
  • the brightness of the display area, the brightness of the backlight unit 201, and the light transmittance of the display unit 101 satisfy the formula (1):
  • ID is the brightness of the display area
  • I is the brightness of the backlight unit 201
  • Trans is the transmittance of the display unit 101 .
  • the light transmittance of the display unit 101 is related to the grayscale voltage of the display unit 101 . Moreover, the light transmittance of the display unit 101 is different, and the color gamut of the display area is also different. For example, when the light transmittance of the display unit 101 is greater than a certain threshold, the color gamut of the display area reaches the maximum and remains stable; decrease in luminosity.
  • At least one of the grayscale voltage of the display unit 101 and the brightness of the backlight unit 201 can be adjusted, and the change of the light transmittance of the display unit 101 and/or the change of the brightness of the backlight unit 201 can cause the display
  • the brightness of the display area can be changed, so that the display area can display different brightness; in the case that the gray-scale voltage of the display unit 101 is adjustable, by adjusting the gray-scale voltage of the display unit 101, the display area can be adjusted when displaying different brightness.
  • Color gamut when the grayscale voltage of the display unit 101 is fixed, it is also possible to set the grayscale voltage of the display unit 101 to a voltage value that can maximize the color gamut of the display area and maintain a stable voltage value, and adjust the backlight
  • the brightness of the unit 201 makes the color gamut of the display area maximum and stable when displaying different brightness. In this way, the highly consistent color gamut of the display device in the full brightness range can be achieved, and the color coordinates of R, G, and B can also be kept stable, avoiding problems such as color distortion, loss of details in dark parts, and color temperature jumps, and effectively improving the performance of the display device. Show performance.
  • the grayscale voltage of the display unit 101 is a preset voltage value; at least one of the grayscale voltage of the display unit 101 and the brightness of the backlight unit 201 can be adjusted including:
  • the brightness of the backlight unit 201 can be adjusted according to the brightness to be displayed in the display area and the preset voltage value.
  • the embodiments of the present disclosure make no special limitation on how to adjust the brightness of the backlight unit 201 .
  • the backlight unit 201 can be set to a plurality of brightnesses corresponding to different gray scales, and the brightness of the backlight unit 201 is adjusted to the brightness corresponding to the corresponding gray scales according to the preset voltage value and the brightness to be displayed in the display area.
  • the brightness of the backlight unit 200 is a preset brightness; at least one of the grayscale voltage of the display unit 101 and the brightness of the backlight unit 201 can be adjusted including:
  • the grayscale voltage of the display unit 101 can be adjusted according to the grayscale corresponding to the brightness to be displayed in the display area and the preset brightness.
  • the embodiment of the present disclosure makes no special limitation on how to adjust the gray scale voltage of the display unit 101 .
  • the grayscale voltage of the display unit can be set to a plurality of voltage values corresponding to different grayscales, and the grayscale voltage of the display unit 101 is adjusted to a voltage corresponding to the corresponding grayscale according to the preset brightness and the brightness to be displayed in the display area. value.
  • At least one of the gray scale voltage of the display unit 101 and the brightness of the backlight unit 201 can be adjusted including;
  • the grayscale voltage of the display unit 101 can be adjusted according to the brightness to be displayed in the display area;
  • the brightness of the backlight unit 201 can be adjusted according to the brightness to be displayed in the display area and the grayscale voltage of the display unit 201 .
  • an embodiment of the present disclosure provides a driving method of a display device
  • the display device includes a display panel and a backlight arranged in sequence, and the backlight is arranged on the light-incident side of the display panel.
  • the display device is divided into at least one display area, the display panel is divided into at least one display unit, and the backlight source is divided into at least one backlight unit; one display area includes at least one display unit and one said display unit A backlight unit; one backlight unit corresponds to at least one display unit; the backlight unit is used to provide a light source for the display unit; in one display area, the driving method includes:
  • step S1 the to-be-displayed grayscale of the to-be-displayed image area corresponding to the display area is determined, wherein the to-be-displayed image is divided into at least one to-be-displayed image area, each of the to-be-displayed image areas corresponds to one of the display area;
  • step S2 at least one of the gray scale voltage to be displayed of the display unit and the brightness of the backlight unit is determined according to the gray scale to be displayed.
  • FIG. 1 and FIG. 2 The display device in the embodiment of the present disclosure is shown in FIG. 1 and FIG. 2 .
  • the display panel 100 is divided into a plurality of display units 101
  • the backlight source 200 is divided into a plurality of backlight units 201
  • one backlight unit 201 corresponds to one display area.
  • the backlight unit 201 is provided in one-to-one correspondence with the display unit 101 .
  • one backlight unit 201 corresponds to a plurality of display units 101 .
  • FIG. 1 and FIG. 2 are only exemplary illustrations of the display device provided by the embodiment of the present disclosure, and are not intended to limit the display device provided by the embodiment of the present disclosure.
  • the display panel 100 can also be divided into an entire display unit
  • the backlight source 200 can be divided into an entire backlight unit.
  • the display device includes multiple pixels, and one display unit 101 may include one pixel or multiple pixels.
  • one backlight unit 201 may correspond to one pixel, or may correspond to multiple pixels.
  • the embodiments of the present disclosure make no special limitation on this.
  • each backlight unit 201 independently provides a light source for the corresponding display unit 101, and the light transmittance and backlight of the display unit 101 in each display area At least one of the brightness of the units 201 can be adjusted independently, so as to realize zoned light control.
  • the backlight unit 201 corresponds to the display unit 101 one-to-one, and one backlight unit 201 corresponds to one pixel, pixel-level divisional light control can be realized.
  • the embodiments of the present disclosure make no special limitation on this.
  • the image area to be displayed is obtained by dividing the image to be displayed in the same manner as the display device divides the display area, and the image area to be displayed corresponds to the display area one by one.
  • the display device displays the image to be displayed, the area of the image to be displayed is displayed in the corresponding display area.
  • the display device can support 8-bit, 256-level grayscale; it can also support other grayscales.
  • the embodiments of the present disclosure make no special limitation on this.
  • At least one of the grayscale voltage of the display unit 101 and the brightness of the backlight unit 201 can be adjusted when the display device is driven.
  • the grayscale voltage of the display unit 101 is adjustable, by adjusting the grayscale voltage of the display unit 101, the color gamut of the display area when displaying different brightnesses can be adjusted; when the grayscale voltage of the display unit 101 is fixed, It is also possible to set the grayscale voltage of the display unit 101 to a voltage value that can maximize the color gamut of the display area and maintain a stable voltage value, and adjust the brightness of the backlight unit 201 to make the color gamut of the display area display different brightness. maximum and remain stable.
  • the highly consistent color gamut of the display device in the full brightness range can be achieved, and the color coordinates of R, G, and B can also be kept stable, avoiding problems such as color distortion, loss of details in dark parts, and color temperature jumps, and effectively improving the performance of the display device. Show performance.
  • the to-be-displayed grayscale voltage of the display unit 101 in the display area is a fixed value, and the brightness of the backlight unit 201 can be adjusted. By adjusting the brightness of the backlight unit 201 , the display area can display different brightness.
  • the specified grayscale of the display unit 101 is a voltage value that can maximize the color gamut of the display area and maintain a stable voltage, thereby ensuring the largest and consistent color gamut of the display area in the full brightness range.
  • the grayscale voltage to be displayed is a preset voltage value; the grayscale voltage to be displayed and the backlight unit of the display unit 101 are determined according to the grayscale to be displayed.
  • the step of at least one of the brightness of 201 includes: determining the brightness of the backlight unit 201 according to the gray scale to be displayed and the preset voltage value, so that the display area displays the brightness corresponding to the gray scale to be displayed.
  • the to-be-displayed grayscale voltage of the display unit 101 in the display area can be adjusted, the brightness of the backlight unit 201 is a fixed value, and the light transmittance of the display unit 101 is adjusted by adjusting the to-be-displayed grayscale voltage of the display unit 101 , and further make the display area display different brightness, and the color gamut of the display area can be adjusted during the process of adjusting the grayscale voltage to be displayed of the display unit 101 .
  • the grayscale voltage to be displayed of the display unit 101 varies within a range of voltage values that can maximize the color gamut of the display area and keep it stable, so as to ensure the largest and consistent color gamut of the display area in the full brightness range.
  • the brightness of the backlight unit 201 is a preset brightness; the grayscale voltage to be displayed of the display unit 101 and the brightness of the backlight unit 201 are determined according to the grayscale to be displayed. At least one of the steps includes: determining the voltage of the gray scale to be displayed according to the gray scale to be displayed and the preset brightness, so that the display area displays a brightness corresponding to the gray scale to be displayed.
  • the grayscale voltage of the display unit 101 in the display area and the brightness of the backlight unit 201 can be adjusted in conjunction.
  • step S2 includes: in step S21, determining the grayscale voltage to be displayed according to the grayscale to be displayed;
  • step S22 the brightness of the backlight unit 201 is determined according to the gray scale to be displayed and the gray scale voltage to be displayed, so that the display area displays the brightness corresponding to the gray scale to be displayed.
  • the brightness ID to be displayed in the display area is when the brightness ID corresponding to the gray scale to be displayed is adjusted by step S2
  • the grayscale voltage of the display unit 101 can change the color gamut of the display area, and at the same time adjust the brightness of the backlight unit 201, so that the brightness ID displayed in the display area can be the brightness corresponding to the gray scale to be displayed, that is, the image area to be displayed is not changed.
  • the embodiment of the present disclosure makes no special limitation on how to determine the grayscale voltage to be displayed of the display unit according to the grayscale to be displayed. Taking 256 gray scales as an example, the gray scale ranges from 0 to 255. When the gray scale to be displayed is any one of 0 to 255, the gray scale voltage of the display unit 101 can be adjusted so that the gray scale to be displayed is When the color gamut is any one of 0 to 255, the color gamut remains consistent; it is also possible to adjust the gray-scale voltage of the display unit 101 to increase the color gamut only when the color gamut corresponding to the gray scale to be displayed is small.
  • the brightness of the backlight unit 201 when the brightness of the backlight unit 201 is constant, by adjusting the gray scale voltage of the display unit 101 to change the transmittance of the display unit 101, the brightness of the display area can be controlled.
  • the functional relationship between the brightness of the display area and the gray scale voltage can be characterized as a photoelectric conversion curve.
  • the display device conforms to an industry standard photoelectric conversion curve.
  • the photoelectric conversion curve may be a Hybrid Log Gamma (HLG, Hybrid Log Gamma) curve.
  • a low grayscale threshold is set, a grayscale lower than the low grayscale threshold is a low grayscale, and a grayscale equal to or higher than the low grayscale threshold is a high grayscale.
  • Embodiments of the present disclosure make no special limitation on the low grayscale threshold. Taking 256 gray scales as an example, the low gray scale threshold can be any gray scale from 0 to 255, for example, the low gray scale threshold can be 50, 100, or 150.
  • the gray scale voltage corresponding to the low gray scale is mapped to the high gray scale in the photoelectric conversion curve.
  • grayscale voltage and correspondingly adjust the brightness of the backlight unit 201, thereby increasing the light transmittance of the display unit 101 and increasing the color gamut of the display area in the low brightness range; while the grayscale voltage to be displayed corresponding to the high grayscale is still at The corresponding gray scale voltage in the photoelectric conversion curve. Because the display area has a large and stable color gamut in the high-brightness range, it is possible to achieve consistent color gamut in the full-brightness range of the display area.
  • the to-be-displayed grayscale voltage corresponding to the low grayscale is mapped to the grayscale voltage corresponding to the high grayscale in the photoelectric conversion curve, which is expressed as a grayscale mapping between multiple low grayscales and at least one high grayscale relation.
  • step S21 includes:
  • step S211 it is judged whether the grayscale to be displayed is lower than a low grayscale threshold
  • step S212 when the grayscale to be displayed is lower than the low grayscale threshold, the grayscale voltage to be displayed is determined according to the grayscale mapping relationship between multiple low grayscales and at least one high grayscale, wherein, A gray scale lower than the low gray scale threshold is a low gray scale, and a gray scale not lower than the low gray scale threshold is a high gray scale.
  • step S21 further includes:
  • step S213 when the gray scale to be displayed is not lower than the low gray scale threshold, the gray scale voltage corresponding to the gray scale to be displayed in the first mapping relationship is determined as the gray scale voltage to be displayed , wherein the first mapping relationship includes correspondences between multiple gray scales and multiple gray scale voltages.
  • the embodiments of the present disclosure make no special limitation on the first mapping relationship.
  • the first mapping relationship is a one-to-one correspondence between the gray scale and the gray scale voltage in the photoelectric conversion curve.
  • the to-be-displayed grayscale voltages corresponding to each low grayscale are mapped to the grayscale voltage corresponding to the same high grayscale in the first mapping relationship, and then the brightness of the backlight unit 201 is adjusted.
  • the brightness displayed in the display area conforms to the photoelectric conversion curve.
  • the grayscale mapping relationship includes that a plurality of low grayscales all correspond to a first target grayscale, and the first target grayscale is a high grayscale; referring to FIG. 6 , step S212 includes:
  • step S2121 the gray-scale voltage corresponding to the first target gray-scale in the first mapping relationship is determined as the gray-scale voltage to be displayed.
  • the embodiments of the present disclosure make no special limitation on the range of the first target grayscale.
  • the first target grayscale can be any grayscale from 0 to 255, for example, the first target grayscale can be 50, 100, or 150.
  • the first target grayscale ranges from 40 to 60, that is, the first target grayscale can be selected within the range from 40 to 60, for example, the first target grayscale is 50.
  • the first target grayscale range is set to 40 To 60, it can ensure that the liquid crystal display panel conforms to the photoelectric conversion curve, and at the same time significantly improve the color saturation in the low-brightness range, increase the color gamut, and achieve the consistency of the color gamut in the full-brightness range.
  • the gray-scale voltage to be displayed corresponding to each low gray-scale is mapped to the gray-scale voltage corresponding to multiple high gray-scales in the target gray-scale interval in the first mapping relationship, and then the brightness of the backlight unit 201 is adjusted .
  • the brightness displayed in the display area conforms to the photoelectric conversion curve.
  • the grayscale mapping relationship includes a one-to-one correspondence between a plurality of low grayscales and a plurality of second target grayscales in the target grayscale interval in order of height, and the second target grayscales are High grayscale; with reference to Figure 7, step S212 includes:
  • step S2122 the gray-scale voltage corresponding to the second target gray-scale corresponding to the gray-scale to be displayed in the first mapping relationship is determined as the gray-scale voltage to be displayed.
  • the low grayscale threshold is 50, and the range of the low grayscale is [0,49].
  • the low grayscale interval [0,49] is mapped to the target grayscale interval [51,100].
  • the grayscale Level 0 corresponds to gray level 51
  • gray level 1 corresponds to gray level 52
  • gray level 49 corresponds to gray level 100.
  • the grayscale to be displayed is not limited to mapping the gray scales to be displayed that are lower than the low gray scale threshold to the target gray scale range, and it is also possible to map one or more ranges that are lower than the low gray scale threshold The grayscale to be displayed is mapped to the target grayscale range.
  • mapping the low grayscale interval to the high grayscale interval is more conducive to distinguishing different grayscales in the low brightness range and improving the display effect; at the same time, it reduces the requirements for the backlight source, thereby saving the cost of the display device. cost.
  • the embodiments of the present disclosure make no special limitation on how to adjust the brightness of the backlight unit 201 .
  • step S22 includes:
  • step S221 the pulse width modulation (PWM, Pulse Width Modulation) duty cycle to be displayed is determined according to the gray scale to be displayed and the gray scale voltage to be displayed, so as to adjust the backlight unit corresponding to the image area to be displayed brightness.
  • PWM Pulse Width Modulation
  • step S221 includes:
  • step S2211 fitting is performed according to the corresponding relationship between the gray scale, the gray scale voltage and the PWM duty cycle, and the PWM duty cycle to be displayed is determined.
  • the grayscale to be displayed is a grayscale other than 0, 12, 24, 36, and 48, fitting is performed according to the stored corresponding relationship to determine the PWM duty cycle to be displayed.
  • an embodiment of the present disclosure provides a driving device, which is applied to a display device, and the display device includes a display panel and a backlight arranged sequentially in layers, and the backlight is arranged on the light-incident side of the display panel;
  • the display device is divided into at least one display area, the display panel is divided into at least one display unit, and the backlight source is divided into at least one backlight unit; one display area includes at least one display unit and one backlight unit one of the backlight units corresponds to at least one of the display units; the backlight unit is used to provide a light source for the display unit;
  • the display device is driven.
  • the embodiments of the present disclosure provide a display device, including any display device described in the first aspect of the embodiments of the present disclosure and the driving device described in the third aspect of the embodiments of the present disclosure; the driving device is used for The display device is driven to display.
  • the technical solutions provided by the embodiments of the present disclosure will be described in detail below through specific examples:
  • the display device supports 256 gray scales.
  • Set the low grayscale threshold to 50 the grayscale below 50 is low grayscale, and the grayscale equal to or higher than 50 is high grayscale; set the first target grayscale to 50, within the interval [0,49]
  • the gray-scale voltage corresponding to each gray-scale is mapped to the gray-scale voltage corresponding to gray-scale 50 in the HLG curve.
  • the grayscale voltage to be displayed is set to the grayscale voltage corresponding to grayscale 50 in the HLG curve;
  • the brightness of the backlight source is adjusted so that the display device displays the brightness corresponding to the gray scale to be displayed.
  • Fig. 10 is a schematic diagram of the color coordinates Wx and Wy of white light changing with the gray scale in this embodiment
  • Fig. 11 is a schematic diagram of the color coordinates Rx and Ry of red light changing with the gray scale in this embodiment
  • Fig. 12 is a schematic diagram of the color coordinates Rx and Ry of red light in this embodiment
  • FIG. 13 is a schematic diagram of the color coordinates Bx and By of the blue light changing with the gray scale in this embodiment.
  • the abscissa is the gray scale
  • the ordinate is the color coordinate.
  • the color coordinates Wx and Wy of white, the color coordinates Rx and Ry of red, and the color coordinates Gx and Gy of green By can quickly change to a stable value and maintain it, that is, the consistency of the color gamut within the full brightness range is achieved.
  • the horizontal axis x and the vertical axis y represent the color coordinates
  • l represents the gray scale
  • the three vertices of the triangle represent the color coordinates of red light, green light, and blue light respectively
  • the area of the triangle represents the color gamut.
  • the grayscale l is 20, 50, 100, and 200
  • the corresponding color gamut areas are approximately the same, that is, the color gamut of the display device is the largest and consistent within the full brightness range.
  • grayscale 37 and grayscale 50 as an example, the display device in the related art is tested separately, and the color coordinates and brightness of RGBW corresponding to the HLG curve of grayscale 37 and grayscale 50 are shown in Table 1.
  • the brightness of white light corresponding to grayscale 50 is 4.6556nit, and the color gamut area is 45.84% BT2020; the brightness of white light corresponding to grayscale 37 is 1.1689nit, and the color gamut area is 17.39% BT2020.
  • the gray-scale voltage corresponding to gray scale 37 is set to the gray-scale voltage corresponding to gray scale 50, and the brightness of the backlight source is adjusted at the same time, and the brightness of the display device is readjusted to gray scale 37. corresponding brightness.
  • the color coordinates and brightness corresponding to the obtained gray scale 37 are shown in Table 2.
  • the brightness of white light corresponding to gray scale 37 in Table 2 is consistent with the brightness of white light corresponding to gray scale 37 in Table 1, and the color coordinates of red, white, and blue corresponding to gray scale 37 in Table 2 are the same as gray scale 50 in Table 1.
  • the corresponding red, white, and blue color coordinates are consistent.
  • the color gamut area corresponding to grayscale 37 is increased to 45.67% BT2020, which is consistent with the color gamut area corresponding to grayscale 50.
  • the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit .
  • Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

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Abstract

本公开提供一种显示装置，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节。本公开还提供一种显示装置的驱动方法、一种驱动装置、一种显示设备。

Description

显示装置及其驱动方法、驱动装置、显示设备 技术领域
本公开涉及显示技术领域，特别涉及一种显示装置、一种显示装置的驱动方法、一种驱动装置、一种显示设备。
背景技术
传统的液晶显示器(LCD，Liquid Crystal Display)在低亮度范围内的色域较小，随着灰阶的升高LCD的色域会逐渐增大；当灰阶升高到一定值后，色域达到最大并保持稳定。此外，在低亮度范围内，随着灰阶的升高，LCD的红色(Red)、绿色(Green)、蓝色(Blue)的色坐标的变化趋势并不一致，导致LCD在低亮度范围内容易产生色彩失真、暗部细节丢失、色温跳变等问题，严重影响LCD的色彩还原能力。
在一些相关技术中，还无法实现显示面板、特别是LCD显示面板在全亮度范围内色域一致。
发明内容
本公开实施例提供一种显示装置、一种显示装置的驱动方法、一种驱动装置、一种显示设备。
第一方面，本公开实施例提供一种显示装置，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节。
在一些实施例中，在一个所述显示区中，所述显示单元的灰阶电压为预设电压值；所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括：
所述背光单元的亮度能够根据所述显示区待显示的亮度和所述预设电压值进行调节。
在一些实施例中，在一个所述显示区中，所述背光单元的亮度为预设亮度；所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括：
所述显示单元的灰阶电压能够根据所述显示区待显示的亮度对应的灰阶和所述预 设亮度进行调节。
在一些实施例中，在一个所述显示区中，所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括；
所述显示单元的灰阶电压能够根据所述显示区待显示的亮度进行调节；
所述背光单元的亮度能够根据所述显示区待显示的亮度和所述显示单元的灰阶电压进行调节。
第二方面，本公开实施例提供一种显示装置的驱动方法，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述驱动方法包括：
确定所述显示区对应的待显示图像区的待显示灰阶，其中，待显示图像划分为至少一个所述待显示图像区，每一个所述待显示图像区对应一个所述显示区；
根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者。
在一些实施例中，在一个所述显示区中，所述待显示灰阶电压为预设电压值；根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：
根据所述待显示灰阶和所述预设电压值确定所述背光单元的亮度，以使所述显示区显示所述待显示灰阶对应的亮度。
在一些实施例中，在一个所述显示区中，所述背光单元的亮度为预设亮度；根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：
根据所述待显示灰阶和所述预设亮度确定所述待显示灰阶电压，以使所述显示区显示所述待显示灰阶对应的亮度。
在一些实施例中，根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：根据所述待显示灰阶确定所述待显示灰阶电压；
根据所述待显示灰阶和所述待显示灰阶电压确定所述背光单元的亮度，以使所述显 示区显示所述待显示灰阶对应的亮度。
在一些实施例中，根据所述待显示灰阶确定所述待显示灰阶电压的步骤包括：
判断所述待显示灰阶是否低于低灰阶阈值；
当所述待显示灰阶低于所述低灰阶阈值时，根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压，其中，低于所述低灰阶阈值的灰阶为低灰阶，不低于所述低灰阶阈值的灰阶为高灰阶。
在一些实施例中，所述灰阶映射关系包括多个低灰阶均对应第一目标灰阶，所述第一目标灰阶为高灰阶；根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压的步骤包括：
将所述第一目标灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
在一些实施例中，所述灰阶映射关系包括多个低灰阶与目标灰阶区间中的多个第二目标灰阶按照高低顺序一一对应，所述第二目标灰阶为高灰阶；根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压的步骤包括：
将所述待显示灰阶对应的第二目标灰阶在第一映射关系中所对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
在一些实施例中，根据所述待显示灰阶确定所述待显示灰阶电压的步骤还包括：
当所述待显示灰阶不低于所述低灰阶阈值时，将所述待显示灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
在一些实施例中，根据所述待显示灰阶和所述待显示灰阶电压调节所述背光单元的亮度的步骤包括：
根据所述待显示灰阶、所述待显示灰阶电压确定待显示脉冲宽度调制PWM占空比，以确定所述背光单元的亮度。
在一些实施例中，根据所述待显示灰阶、所述待显示灰阶电压确定待显示脉冲宽度调制PWM占空比的步骤包括：
根据灰阶、灰阶电压与PWM占空比的对应关系进行拟合，确定所述待显示PWM占空比。
第三方面，本公开实施例提供一种驱动装置，应用于显示装置，所述显示装置包括 依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；所述驱动装置能够执行本公开实施例第二方面所述的任意一种驱动方法对所述显示装置进行驱动。
第四方面，本公开实施例提供一种显示设备，包括本公开实施例第一方面所述的任意一种显示装置和第三方面所述的驱动装置；所述驱动装置用于驱动所述显示装置进行显示。
附图说明
附图用来提供对本公开实施例的进一步理解，并且构成说明书的一部分，与本公开的实施例一起用于解释本公开，并不构成对本公开的限制。通过参考附图对详细示例实施例进行描述，以上和其它特征和优点对本领域技术人员将变得更加显而易见，在附图中：
图1是本公开实施例中一种显示装置的示意图；
图2是本公开实施例中一种显示装置的示意图；
图3是本公开实施例中一种驱动方法的流程图；
图4是本公开实施例中另一种驱动方法中部分步骤的流程图；
图5是本公开实施例中又一种驱动方法中部分步骤的流程图；
图6是本公开实施例中再一种驱动方法中部分步骤的流程图；
图7是本公开实施例中再一种驱动方法中部分步骤的流程图；
图8是本公开实施例中再一种驱动方法中部分步骤的流程图；
图9是本公开实施例中再一种驱动方法中部分步骤的流程图；
图10是本公开实施例中白光的色坐标随灰阶变化示意图；
图11是本公开实施例中红光的色坐标随灰阶变化示意图；
图12是本公开实施例中绿光的色坐标随灰阶变化示意图；
图13是本公开实施例中蓝光的色坐标随灰阶变化示意图；
图14是本公开实施例不同灰阶对应的色域的示意图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图对本公开提供的显示装置、显示装置的驱动方法、驱动装置、显示设备进行详细描述。
在下文中将参考附图更充分地描述示例实施例，但是所述示例实施例可以以不同形式来体现且不应当被解释为限于本文阐述的实施例。反之，提供这些实施例的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
在不冲突的情况下，本公开各实施例及实施例中的各特征可相互组合。
如本文所使用的，术语“和/或”包括一个或多个相关列举条目的任何和所有组合。
本文所使用的术语仅用于描述特定实施例，且不意欲限制本公开。如本文所使用的，单数形式“一个”和“该”也意欲包括复数形式，除非上下文另外清楚指出。还将理解的是，当本说明书中使用术语“包括”和/或“由……制成”时，指定存在所述特征、整体、步骤、操作、元件和/或组件，但不排除存在或添加一个或多个其它特征、整体、步骤、操作、元件、组件和/或其群组。
除非另外限定，否则本文所用的所有术语(包括技术和科学术语)的含义与本领域普通技术人员通常理解的含义相同。还将理解，诸如那些在常用字典中限定的那些术语应当被解释为具有与其在相关技术以及本公开的背景下的含义一致的含义，且将不解释为具有理想化或过度形式上的含义，除非本文明确如此限定。
第一方面，参照图1、图2，本公开实施例提供一种显示装置，所述显示装置包括依次层叠设置的显示面板100和背光源200，背光源200设置在显示面板100的入光侧；所述显示装置划分为至少一个显示区，显示面板100划分为至少一个显示单元101，背光源200划分为至少一个背光单元201；一个所述显示区至少包括一个显示单元101和一个背光单元201；一个背光单元201至少对应一个显示单元101；背光单元201用于为显示单元101提供光源；在一个所述显示区中，显示单元101的灰阶电压和背光单元201的亮度中的至少一者能够调节。
在图1和图2中，一个背光单元201对应一个显示区。在图1中，背光单元201与显示单元101一一对应设置。在图2中，一个背光单元201对应多个显示单元101。需要说明的是，图1和图2仅为对本公开实施例提供的显示装置的示例性说明，而不作为对本公开实施例提供的显示装置的限制。例如，显示面板100还可以划分为一整个显示单元，背光源200划分为一整个背光单元。
在本公开实施例中，显示装置包括多个像素，一个显示单元101可以包括一个像素，也可以包括多个像素。相应地，一个背光单元201可以对应一个像素，也可以对应多个 像素。本公开实施例对此不做特殊限定。
需要说明的是，在如图1和图2所示的显示装置中，每个背光单元201独立地为对应的显示单元101提供光源，每个显示区中的显示单元101的透光率和背光单元201的亮度中的至少一者能够独立调节，从而实现分区控光。当背光单元201与显示单元101一一对应，且一个背光单元201对应一个像素时，能够实现像素级分区控光。本公开实施例对此不做特殊限定。
在本公开实施例中，显示装置可以支持8比特(bit)、256级灰阶；也可以支持其他灰阶。本公开实施例对此不做特殊限定。
本公开实施例对显示面板100不做特殊限定。例如，显示面板100可以是液晶显示面板；也可以是发光二极管(LED，Light-Emitting Diode)显示面板；还可以是mini-LED显示面板。
本公开实施例对背光源200也不做特殊限定。例如，背光源200为由微LED组成的阵列。
在本公开实施例中，显示区的亮度与背光单元201的亮度、显示单元101的透光率满足公式(1)：
I D＝I×Trans          (1)
其中，I D为显示区亮度，I为背光单元201的亮度，Trans为显示单元101的透光率。
在本公开实施例中，显示单元101的透光率与显示单元101的灰阶电压相关。而且显示单元101的透光率不同，显示区的色域也会不同。例如，显示单元101的透光率大于一定阈值时，显示区的色域达到最大且保持稳定；显示单元101的透光率小于一定阈值时，显示区的色域会随着显示单元101的透光率而减小。
在本公开实施例中，显示单元101的灰阶电压和背光单元201的亮度中的至少一者能够调节，显示单元101的透光率变化和/或背光单元201的亮度变化，均能够引起显示区亮度的变化，从而能够使显示区能够显示不同的亮度；在显示单元101的灰阶电压可调的情况下，通过调节显示单元101的灰阶电压，能够调节显示区在显示不同亮度时的色域；在显示单元101的灰阶电压固定的情况下，也可以通过将显示单元101的灰阶电压设定为在能够使显示区的色域最大且保持稳定的电压值，并通过调节背光单元201的亮度，使得显示区在显示不同亮度时的色域最大且保持稳定。从而能够实现显示装置在全亮度范围内色域的高度一致，R、G、B的色坐标也能够保持稳定，避免产生色彩失真、暗部细节丢失、色温跳变等问题，有效提升了显示装置的显示性能。
在一些实施例中，在一个所述显示区中，显示单元101的灰阶电压为预设电压值；显示单元101的灰阶电压和背光单元201的亮度中的至少一者能够调节包括：
背光单元201的亮度能够根据所述显示区待显示的亮度和所述预设电压值进行调节。
本公开实施例对如何调节背光单元201的亮度不做特殊限定。例如，背光单元201能够设置为多个对应不同灰阶的亮度，根据所述预设电压值和显示区待显示的亮度将背光单元201的亮度调节为对应相应灰阶的亮度。
在一些实施例中，在一个所述显示区中，背光单元200的亮度为预设亮度；显示单元101的灰阶电压和背光单元201的亮度中的至少一者能够调节包括：
显示单元101的灰阶电压能够根据所述显示区待显示的亮度对应的灰阶和所述预设亮度进行调节。
本公开实施例对如何调节显示单元101的灰阶电压不做特殊限定。例如，显示单元的灰阶电压能够设置为多个对应不同灰阶的电压值，根据所述预设亮度和显示区待显示的亮度将显示单元101的灰阶电压调整为对应相应灰阶的电压值。
在一些实施例中，在一个所述显示区中，显示单元101的灰阶电压和背光单元201的亮度中的至少一者能够调节包括；
显示单元101的灰阶电压能够根据所述显示区待显示的亮度进行调节；
背光单元201的亮度能够根据所述显示区待显示的亮度和显示单元201的灰阶电压进行调节。
第二方面，参照图3，本公开实施例提供一种显示装置的驱动方法，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述驱动方法包括：
在步骤S1中，确定所述显示区对应的待显示图像区的待显示灰阶，其中，待显示图像划分为至少一个所述待显示图像区，每一个所述待显示图像区对应一个所述显示区；
在步骤S2中，根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者。
本公开实施例中的显示装置如图1、图2所示。在图1和图2中，显示面板100划分为多个显示单元101，背光源200划分为多个背光单元201，一个背光单元201对应 一个显示区。在图1中，背光单元201与显示单元101一一对应设置。在图2中，一个背光单元201对应多个显示单元101。需要说明的是，图1和图2仅为对本公开实施例提供的显示装置的示例性说明，而不作为对本公开实施例提供的显示装置的限制。例如，显示面板100还可以划分为一整个显示单元，背光源200划分为一整个背光单元。
在本公开实施例中，显示装置包括多个像素，一个显示单元101可以包括一个像素，也可以包括多个像素。相应地，一个背光单元201可以对应一个像素，也可以对应多个像素。本公开实施例对此不做特殊限定。
需要说明的是，在如图1和图2所示的显示装置中，每个背光单元201独立地为对应的显示单元101提供光源，每个显示区中的显示单元101的透光率和背光单元201的亮度中的至少一者能够独立调节，从而实现分区控光。当背光单元201与显示单元101一一对应，且一个背光单元201对应一个像素时，能够实现像素级分区控光。本公开实施例对此不做特殊限定。
在本公开实施例中，待显示图像区是按照显示装置划分显示区同样的方式划分待显示图像得到的，待显示图像区与显示区一一对应。当显示设备显示待显示图像时，待显示图像区在对应的显示区进行显示。
在本公开实施例中，显示装置可以支持8bit、256级灰阶；也可以支持其他灰阶。本公开实施例对此不做特殊限定。
在本公开实施例中，在对显示装置进行驱动时，能够调节显示单元101的灰阶电压和背光单元201的亮度中的至少一者。在显示单元101的灰阶电压可调的情况下，通过调节显示单元101的灰阶电压，能够调节显示区在显示不同亮度时的色域；在显示单元101的灰阶电压固定的情况下，也可以通过将显示单元101的灰阶电压设定为在能够使显示区的色域最大且保持稳定的电压值，并通过调节背光单元201的亮度，使得显示区在显示不同亮度时的色域最大且保持稳定。从而能够实现显示装置在全亮度范围内色域的高度一致，R、G、B的色坐标也能够保持稳定，避免产生色彩失真、暗部细节丢失、色温跳变等问题，有效提升了显示装置的显示性能。
在一些实施例中，显示区中显示单元101的待显示灰阶电压为固定值，背光单元201的亮度能够调节，通过调节背光单元201的亮度使显示区显示不同的亮度。在一些实施例中，显示单元101的规定的灰阶为能够使显示区的色域最大且保持稳定的电压值，从而确保显示区在全亮度范围内色域最大且一致。
相应地，在一些实施例中，在一个所述显示区中，所述待显示灰阶电压为预设电压 值；根据所述待显示灰阶确定显示单元101的待显示灰阶电压和背光单元201的亮度中的至少一者的步骤包括：根据所述待显示灰阶和所述预设电压值确定背光单元201的亮度，以使所述显示区显示所述待显示灰阶对应的亮度。
在一些实施例中，显示区中显示单元101的待显示灰阶电压能够调节，背光单元201的亮度为固定值，通过调节显示单元101的待显示灰阶电压从而调节显示单元101的透光率，进而使显示区显示不同的亮度，在调节显示单元101的待显示灰阶电压的过程中能够调节显示区的色域。在一些实施例中，显示单元101的待显示灰阶电压在能够使显示区的色域最大且保持稳定的电压值范围内变动，从而确保显示区在全亮度范围内色域最大且一致。
相应地，在一些实施例中，在一个所述显示区中，背光单元201的亮度为预设亮度；根据所述待显示灰阶确定显示单元101的待显示灰阶电压和背光单元201的亮度中的至少一者的步骤包括：根据所述待显示灰阶和所述预设亮度确定所述待显示灰阶电压，以使所述显示区显示所述待显示灰阶对应的亮度。
在一些实施例中，显示区中显示单元101的灰阶电压和背光单元201的亮度能够联动调节。
相应地，在一些实施例中，参照图4，步骤S2包括：在步骤S21中，根据所述待显示灰阶确定所述待显示灰阶电压；
在步骤S22中，根据所述待显示灰阶和所述待显示灰阶电压确定背光单元201的亮度，以使所述显示区显示所述待显示灰阶对应的亮度。
根据公式(1)所示的显示区的亮度与背光单元201的亮度、显示单元101的关系可得，在显示区要显示的亮度I D为待显示灰阶对应的亮度时，通过步骤S2调节显示单元101的灰阶电压，能够改变显示区的色域，同时调节背光单元201的亮度，能够使显示区显示的亮度I D为待显示灰阶对应的亮度，即不改变待显示图像区在显示时原本的亮度。
本公开实施例对于如何根据待显示灰阶确定显示单元的待显示灰阶电压不做特殊限定。以256级灰阶为例，灰阶的范围为0至255，可以在待显示灰阶为0至255中任意一者时，都调节显示单元101的灰阶电压，以使待显示灰阶为0至255中任意一者时色域都保持一致；也可以只在待显示灰阶对应的色域较小时，调节显示单元101的灰阶电压，以增大色域。
在本公开实施例中，在背光单元201亮度恒定的情况下，通过调节显示单元101的 灰阶电压改变显示单元101的透过率，能够实现对显示区亮度的控制。其中，背光单元201亮度恒定的情况下，显示区的亮度与灰阶电压的函数关系可表征为光电转换曲线。在一些实施例中，显示装置符合行业标准的光电转换曲线。例如，光电转换曲线可以为混合对数伽马(HLG，Hybrid Log Gamma)曲线。
在本公开实施例中，设定低灰阶阈值，低于低灰阶阈值的灰阶为低灰阶，等于或高于低灰阶阈值的灰阶为高灰阶。本公开实施例对低灰阶阈值不做特殊限定。以256级灰阶为例，低灰阶阈值可以是0到255中的任意灰阶，例如，低灰阶阈值可以是50，也可以是100，还可以是150。
因背光单元201亮度恒定的情况下，显示区在低亮度范围内色域较小，在一些实施例中，将低灰阶对应的待显示灰阶电压映射为高灰阶在光电转换曲线中对应的灰阶电压，并相应调节背光单元201的亮度，从而提高显示单元101的透光率，增大低亮度范围内显示区的色域；而高灰阶对应的待显示灰阶电压仍为在光电转换曲线中对应的灰阶电压。因显示区在高亮度范围内色域较大且稳定，能够实现显示区在全亮度范围内色域的一致。在一些实施例中，将低灰阶对应的待显示灰阶电压映射为高灰阶在光电转换曲线中对应的灰阶电压，表现为多个低灰阶与至少一个高灰阶的灰阶映射关系。
相应地，在一些实施例中，参照图5，步骤S21包括：
在步骤S211中，判断所述待显示灰阶是否低于低灰阶阈值；
在步骤S212中，当所述待显示灰阶低于所述低灰阶阈值时，根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压，其中，低于所述低灰阶阈值的灰阶为低灰阶，不低于所述低灰阶阈值的灰阶为高灰阶。
相应地，在一些实施例中，参照图5，步骤S21还包括：
在步骤S213中，当所述待显示灰阶不低于所述低灰阶阈值时，将所述待显示灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
本公开实施例对第一映射关系不做特殊限定。在一些实施例中，第一映射关系为灰阶与灰阶电压在光电转换曲线中的一一对应关系。
本公开实施例对于如何将低灰阶对应的待显示灰阶电压映射为高灰阶在第一映射关系中对应的灰阶电压不做特殊限定。
在一些实施例中，将各个低灰阶对应的待显示灰阶电压都映射为同一个高灰阶在第一映射关系中对应的灰阶电压，然后调节背光单元201的亮度。在一些实施例中，通过 调节背光单元201的亮度使得显示区显示的亮度符合光电转换曲线。
相应地，在一些实施例中，所述灰阶映射关系包括多个低灰阶均对应第一目标灰阶，所述第一目标灰阶为高灰阶；参照图6，步骤S212包括：
在步骤S2121中，将所述第一目标灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压。
本公开实施例对第一目标灰阶的范围不做特殊限定。以256级灰阶为例，第一目标灰阶可以是0到255中任意一个灰阶，例如，第一目标灰阶可以是50，也可以是100，还可以是150。在一些实施例中，第一目标灰阶的范围为40至60，即可以在40至60的范围内选择第一目标灰阶，例如，第一目标灰阶为50。
需要说明的是，液晶显示面板在灰阶为40至60时色域较大且逐渐趋于稳定，而且R、G、B的色坐标也趋于稳定，将第一目标灰阶范围设置为40至60，能够确保液晶显示面板符合光电转换曲线，同时显著提高低亮度范围内的色彩饱和度、增大色域，实现全亮度范围内色域的一致。
在一些实施例中，将各个低灰阶对应的待显示灰阶电压映射为目标灰阶区间中的多个高灰阶在第一映射关系中对应的灰阶电压，然后调节背光单元201的亮度。在一些实施例中，通过调节背光单元201的亮度，使得显示区显示的亮度符合光电转换曲线。
相应地，在一些实施例中，所述灰阶映射关系包括多个低灰阶与目标灰阶区间中的多个第二目标灰阶按照高低顺序一一对应，所述第二目标灰阶为高灰阶；参照图7，步骤S212包括：
在步骤S2122中，将所述待显示灰阶在第一映射关系中对应的第二目标灰阶所对应的灰阶电压确定为所述待显示灰阶电压。
以256级灰阶为例，低灰阶阈值为50，低灰阶的范围为[0,49]，将低灰阶区间[0,49]映射到目标灰阶区间[51,100]，其中，灰阶0对应灰阶51，灰阶1对应灰阶52……依次类推，灰阶49对应灰阶100。
需要说明的是，本公开实施例中，并不限于将低于低灰阶阈值的待显示灰阶均映射到目标灰阶区间，还可以将低于低灰阶阈值的一个或多个区间中的待显示灰阶映射到目标灰阶区间。
需要说明的是，将低灰阶区间中映射到高灰阶区间，更有利于区分低亮度范围内的不同灰阶，提升显示效果；同时降低了对背光源的要求，从而能够节约显示装置的成本。
本公开实施例对如何调节背光单元201的亮度不做特殊限定。
在一些实施例中，参照图8，步骤S22包括：
在步骤S221中，根据所述待显示灰阶、所述待显示灰阶电压确定待显示脉冲宽度调制(PWM，Pulse Width Modulation)占空比，以调节所述待显示图像区对应的背光单元的亮度。
在一些实施例中，参照图9，步骤S221包括：
在步骤S2211中，根据灰阶、灰阶电压与PWM占空比的对应关系进行拟合，确定所述待显示PWM占空比。
例如，将各个低灰阶对应的待显示灰阶电压都映射为灰阶50在光电转换曲线中对应的灰阶电压，预先通过调节PWM占空比，确定待显示灰阶为0、12、24、36、48时对应的PWM占空比并存储。当待显示灰阶为0、12、24、36、48以外的灰阶时，根据存储的对应关系进行拟合，确定待显示PWM占空比。
第三方面，本公开实施例提供一种驱动装置，应用于显示装置，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；所述驱动装置能够执行本公开实施例第二方面所述的任意一种驱动方法对所述显示装置进行驱动。
第四方面，本公开实施例提供一种显示设备，包括本公开实施例第一方面所述的任意一种显示装置和本公开实施例第三方面所述的驱动装置；所述驱动装置用于驱动所述显示装置进行显示。为了使本领域技术人员能够更清楚地理解本公开实施例提供的技术方案，下面通过具体的实施例，对本公开实施例提供的技术方案进行详细说明：
实施例一
在本实施例中，显示装置支持256级灰阶。将低灰阶阈值设置为50，低于50的灰阶为低灰阶，等于或高于50的灰阶为高灰阶；将第一目标灰阶设置为50，区间[0,49]内各个灰阶对应的灰阶电压均映射为灰阶50在HLG曲线中对应的灰阶电压。
对于任意一个待显示图像，当待显示图像的待显示灰阶为低灰阶时，将待显示灰阶电压设置为灰阶50在HLG曲线中对应的灰阶电压；
调节背光源的亮度，使得显示装置显示待显示灰阶对应的亮度。
图10为本实施例中白光的色坐标Wx、Wy随灰阶变化的示意图；图11为本实施例 中红光的色坐标Rx、Ry随灰阶变化的示意图；图12为本实施例中绿光的色坐标Gx、Gy随灰阶变化的示意图；图13为本实施例中蓝光的色坐标Bx、By随灰阶变化的示意图。在图10至图13中，横坐标为灰阶，纵坐标为色坐标。如图10至图13所示，显示装置在低灰阶范围内，随着灰阶的升高，白色的色坐标Wx、Wy，红色的色坐标Rx、Ry，绿色的色坐标Gx、Gy，蓝色的色坐标Bx、By，都能够迅速变化到稳定值并保持，即实现了全亮度范围内色域的一致。在图14中，横轴x、纵轴y表示色坐标，l表示灰阶，三角形的三个顶点分别表示红光、绿光、蓝光的色坐标，三角形的面积表示色域。如图14所示，灰阶l为20、50、100、200时，所对应的色域面积均大致相同，即实现了在全亮度范围内，显示装置的色域均为最大且保持一致。
以灰阶37和灰阶50为例，单独测试相关技术中的显示装置，灰阶37和灰阶50对应HLG曲线的RGBW的色坐标与亮度如表一所示。
表一
Figure PCTCN2021098114-appb-000001
其中，灰阶50对应的白光亮度为4.6556nit，色域面积为45.84％BT2020；灰阶37对应的白光亮度为1.1689nit，色域面积为17.39％BT2020。
在本公开实施例提供的显示装置中，将灰阶37对应的灰阶电压设定为灰阶50对应的灰阶电压，同时调节背光源的亮度，将显示装置的亮度重新调整为灰阶37对应的亮度。得到的灰阶37对应的色坐标与亮度如表二所示。
表二
Figure PCTCN2021098114-appb-000002
可见，表二中灰阶37对应的白光的亮度与表一中灰阶37对应的白光亮度一致，表 二中灰阶37对应的红色、白色、蓝色的色坐标与表一中灰阶50对应的红色、白色、蓝色的色坐标一致。灰阶37对应的色域面积增大为45.67％BT2020，与灰阶50对应的色域面积一致。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、***、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其它存储器技术、CD-ROM、数字多功能盘(DVD)或其它光盘存储、磁盒、磁带、磁盘存储或其它磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
本文已经公开了示例实施例，并且虽然采用了具体术语，但它们仅用于并仅应当被解释为一般说明性含义，并且不用于限制的目的。在一些实例中，对本领域技术人员显而易见的是，除非另外明确指出，否则可单独使用与特定实施例相结合描述的特征、特性和/或元素，或可与其它实施例相结合描述的特征、特性和/或元件组合使用。因此，本领域技术人员将理解，在不脱离由所附的权利要求阐明的本公开的范围的情况下，可进行各种形式和细节上的改变。

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  1. 一种显示装置，其特征在于，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节。
  2. 根据权利要求1所述的显示装置，其特征在于，在一个所述显示区中，所述显示单元的灰阶电压为预设电压值；所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括：
    所述背光单元的亮度能够根据所述显示区待显示的亮度和所述预设电压值进行调节。
  3. 根据权利要求1所述的显示装置，其特征在于，在一个所述显示区中，所述背光单元的亮度为预设亮度；所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括：
    所述显示单元的灰阶电压能够根据所述显示区待显示的亮度对应的灰阶和所述预设亮度进行调节。
  4. 根据权利要求1所述的显示装置，其特征在于，在一个所述显示区中，所述显示单元的灰阶电压和所述背光单元的亮度中的至少一者能够调节包括；
    所述显示单元的灰阶电压能够根据所述显示区待显示的亮度进行调节；
    所述背光单元的亮度能够根据所述显示区待显示的亮度和所述显示单元的灰阶电压进行调节。
  5. 一种显示装置的驱动方法，其特征在于，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光 单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；在一个所述显示区中，所述驱动方法包括：
    确定所述显示区对应的待显示图像区的待显示灰阶，其中，待显示图像划分为至少一个所述待显示图像区，每一个所述待显示图像区对应一个所述显示区；
    根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者。
  6. 根据权利要求5所述的驱动方法，其特征在于，在一个所述显示区中，所述待显示灰阶电压为预设电压值；根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：
    根据所述待显示灰阶和所述预设电压值确定所述背光单元的亮度，以使所述显示区显示所述待显示灰阶对应的亮度。
  7. 根据权利要求5所述的驱动方法，其特征在于，在一个所述显示区中，所述背光单元的亮度为预设亮度；根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：
    根据所述待显示灰阶和所述预设亮度确定所述待显示灰阶电压，以使所述显示区显示所述待显示灰阶对应的亮度。
  8. 根据权利要求5所述的驱动方法，其特征在于，根据所述待显示灰阶确定所述显示单元的待显示灰阶电压和所述背光单元的亮度中的至少一者的步骤包括：根据所述待显示灰阶确定所述待显示灰阶电压；
    根据所述待显示灰阶和所述待显示灰阶电压确定所述背光单元的亮度，以使所述显示区显示所述待显示灰阶对应的亮度。
  9. 根据权利要求8所述的驱动方法，其特征在于，根据所述待显示灰阶确定所述待显示灰阶电压的步骤包括：
    判断所述待显示灰阶是否低于低灰阶阈值；
    当所述待显示灰阶低于所述低灰阶阈值时，根据多个低灰阶与至少一个高灰阶的灰 阶映射关系确定所述待显示灰阶电压，其中，低于所述低灰阶阈值的灰阶为低灰阶，不低于所述低灰阶阈值的灰阶为高灰阶。
  10. 根据权利要求9所述的驱动方法，其特征在于，所述灰阶映射关系包括多个低灰阶均对应第一目标灰阶，所述第一目标灰阶为高灰阶；根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压的步骤包括：
    将所述第一目标灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
  11. 根据权利要求9所述的驱动方法，其特征在于，所述灰阶映射关系包括多个低灰阶与目标灰阶区间中的多个第二目标灰阶按照高低顺序一一对应，所述第二目标灰阶为高灰阶；根据多个低灰阶与至少一个高灰阶的灰阶映射关系确定所述待显示灰阶电压的步骤包括：
    将所述待显示灰阶对应的第二目标灰阶在第一映射关系中所对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
  12. 根据权利要求9至11中任意一项所述的驱动方法，其特征在于，根据所述待显示灰阶确定所述待显示灰阶电压的步骤还包括：
    当所述待显示灰阶不低于所述低灰阶阈值时，将所述待显示灰阶在第一映射关系中对应的灰阶电压确定为所述待显示灰阶电压，其中，所述第一映射关系包括多个灰阶与多个灰阶电压的对应关系。
  13. 根据权利要求8至11中任意一项所述的驱动方法，其特征在于，根据所述待显示灰阶和所述待显示灰阶电压调节所述背光单元的亮度的步骤包括：
    根据所述待显示灰阶、所述待显示灰阶电压确定待显示脉冲宽度调制PWM占空比，以确定所述背光单元的亮度。
  14. 根据权利要求13所述的驱动方法，其特征在于，根据所述待显示灰阶、所述待显示灰阶电压确定待显示脉冲宽度调制PWM占空比的步骤包括：
    根据灰阶、灰阶电压与PWM占空比的对应关系进行拟合，确定所述待显示PWM占空比。
  15. 一种驱动装置，应用于显示装置，所述显示装置包括依次层叠设置的显示面板和背光源，所述背光源设置在所述显示面板的入光侧；所述显示装置划分为至少一个显示区，所述显示面板划分为至少一个显示单元，所述背光源划分为至少一个背光单元；一个所述显示区至少包括一个所述显示单元和一个所述背光单元；一个所述背光单元至少对应一个所述显示单元；所述背光单元用于为所述显示单元提供光源；所述驱动装置能够执行权利要求5至14中任意一项所述的驱动方法对所述显示装置进行驱动。
  16. 一种显示设备，包括权利要求1至4中任意一项所述的显示装置和权利要求15所述的驱动装置；所述驱动装置用于驱动所述显示装置进行显示。
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CN107863086A (zh) * 2017-12-20 2018-03-30 惠科股份有限公司 一种显示装置的驱动方法及显示装置
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