CN110993673B - Display substrate, driving method thereof, driver and display device - Google Patents

Display substrate, driving method thereof, driver and display device Download PDF

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CN110993673B
CN110993673B CN201911312609.1A CN201911312609A CN110993673B CN 110993673 B CN110993673 B CN 110993673B CN 201911312609 A CN201911312609 A CN 201911312609A CN 110993673 B CN110993673 B CN 110993673B
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emitting device
light emitting
color light
pixel
brightness
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CN110993673A (en
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谭文静
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BOE Technology Group Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • 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]
    • 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]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

A display substrate, a driving method thereof, a driver and a display device are provided. In the display substrate, two sides of each pixel island region along a first direction are respectively provided with a connecting bridge region, two sides of each pixel island region along a second direction are respectively provided with a connecting bridge region, two connecting bridge regions are formed between adjacent pixel island regions, and a plurality of pixel island regions are arranged along the crossed first direction and the second direction; four pixel areas are arranged in the pixel island area and four connecting bridge areas on the periphery of the pixel island area, the four pixel areas are arranged in two rows along a first direction and are arranged in two rows along a second direction, a first color light-emitting device, a second color light-emitting device, a third color light-emitting device and a white light-emitting device are arranged in each pixel area, the first color light-emitting device, the second color light-emitting device and the third color light-emitting device are located in the pixel island area, and the white light-emitting device is located in the connecting bridge area outside the corresponding first color light-emitting device, the corresponding second color light-emitting device and the corresponding third color light-emitting device.

Description

Display substrate, driving method thereof, driver and display device
Technical Field
The present disclosure relates to the field of display technologies, and more particularly, to a display substrate, a driving method of the display substrate, a driver of the display substrate, and a display device.
Background
Conventional stretchable display substrates typically have pixel islands, kong Caoou, and bridge regions. The light emitting device (e.g., an organic light emitting diode) is disposed in the pixel island region to form one or more pixels, and the connection line between the pixels is disposed in the bridge region. When the display substrate is deformed, each region may be in a stretched state, a compressed state, or a stretched state in a certain direction and a compressed state in another direction, which results in the need to compensate the original display data when the light emitting device in the display substrate is driven to emit light according to the original display data.
Disclosure of Invention
The present disclosure provides a display substrate, a driving method of the display substrate, a driver of the display substrate, and a display device, so as to at least partially solve the technical problems in the prior art.
According to a first aspect of the present disclosure, a display substrate is provided, including a plurality of pixel island regions, a plurality of hole slot regions, and connecting bridge regions located between the pixel island regions and the hole slot regions, the pixel island regions being arranged in an array along a first direction and a second direction, one connecting bridge region being disposed on each of two sides of each pixel island region along the first direction, one connecting bridge region being disposed on each of two sides of each pixel island region along the second direction, and two connecting bridge regions being formed between adjacent pixel island regions; the pixel island region and four peripheral connecting bridge regions are internally provided with four pixel regions, the four pixel regions are arranged in two rows along the first direction and in two rows along the second direction, each pixel region is internally provided with a first color light-emitting device, a second color light-emitting device, a third color light-emitting device and a white light-emitting device, the first color light-emitting device, the second color light-emitting device and the third color light-emitting device are positioned in the pixel island region, and the white light-emitting devices are positioned in the connecting bridge regions at the outer sides of the corresponding first color light-emitting device, the corresponding second color light-emitting device and the corresponding third color light-emitting device.
In some embodiments, the white light emitting devices in the four pixel regions are distributed in a central symmetry.
In some embodiments, a first white light emitting device and a second white light emitting device are disposed in the pixel region, the first white light emitting device is located at the bridge region extending along the first direction, and the second white light emitting device is located at the bridge region extending along the second direction.
In some embodiments, the first color light emitting devices in the pixel island region are periodically arranged along the first direction and are periodically arranged along the second direction, the second color light emitting devices in the pixel island region are periodically arranged along the first direction and are periodically arranged along the second direction, and the third color light emitting devices in the pixel island region are periodically arranged along the first direction and are periodically arranged along the second direction; or the first color light emitting devices in the pixel island region are arranged in a central symmetry mode, the second color light emitting devices in the pixel island region are arranged in a central symmetry mode, and the third color light emitting devices in the pixel island region are arranged in a central symmetry mode.
In some embodiments, the first color light emitting device, the second color light emitting device, and the third color light emitting device are all in the shape of a bar extending along the first direction or in the shape of a bar extending along the second direction.
In some embodiments, the central connecting lines of the first color light emitting device, the second color light emitting device and the third color light emitting device in the same pixel region are triangular.
In some embodiments, the first color light emitting device, the second color light emitting device and the third color light emitting device are each one of a red organic light emitting diode, a green organic light emitting diode and a blue organic light emitting diode, and the white light emitting device is a white organic light emitting diode.
According to a second aspect of the present disclosure, there is provided a driving method of a display substrate, applied to the display substrate of the first aspect of the present disclosure, the driving method including:
determining a first deformation quantity of the area where the pixel area is located along the first direction and a second deformation quantity of the area where the pixel area is located along the second direction;
determining the total brightness adjustment quantity of the corresponding pixel area according to the first deformation quantity and the second deformation quantity;
under the condition that the total brightness adjustment amount is less than 0, if the white light emitting device in the pixel area does not emit light, the brightness of the first color light emitting device, the second color light emitting device and the third color light emitting device in the pixel area is adjusted and reduced in an equal proportion according to the total brightness adjustment amount, and if the white light emitting device in the pixel area does not emit light, the brightness of the white light emitting device is adjusted and reduced according to the total brightness adjustment amount;
under the condition that the total brightness adjustment quantity is equal to 0, keeping the brightness of the first color light-emitting device, the second color light-emitting device, the third color light-emitting device and the white light-emitting device in the pixel region unchanged;
under the condition that the total brightness adjustment amount is larger than 0 and at least one of the brightness of the first color light-emitting device, the brightness of the second color light-emitting device and the brightness of the third color light-emitting device in the pixel area is the lowest brightness, keeping the brightness of the white light-emitting device unchanged, and adjusting the brightness of the light-emitting device which is not the lowest brightness in the first color light-emitting device, the second color light-emitting device and the third color light-emitting device in the pixel area;
and under the condition that the total brightness adjustment amount is larger than 0 and the brightness of the first color light-emitting device, the second color light-emitting device and the third color light-emitting device in the pixel area is not the lowest brightness, adjusting the overall brightness of the white light-emitting device in the pixel area according to the total brightness adjustment amount.
In some embodiments, when applied to the display substrate of the above embodiments, in the case that the total brightness adjustment amount is greater than 0 and the brightness of the first color light emitting device, the second color light emitting device, and the third color light emitting device in the pixel region is not the lowest brightness, adjusting the overall brightness of the white light emitting device in the pixel region according to the total brightness adjustment amount includes:
determining the luminance adjustment amounts of the first and second white light emitting devices according to the following formula in the case where both the first and second deformation amounts are greater than 0:
Figure GDA0003708741520000031
in the case where the first deformation amount is greater than 0 and the second deformation amount is less than 0, the luminance adjustment amounts of the first and second white light emitting devices are determined according to the following formulas:
ΔL WH ＝ΔL、ΔL WV ＝0；
in the case where the first deformation amount is less than 0 and the second deformation amount is greater than 0, the luminance adjustment amounts of the first and second white light emitting devices are determined according to the following formulas:
ΔL WH ＝0、ΔL WV ＝ΔL；
wherein, Δ L WH As the brightness adjustment amount of the first white light emitting device,. DELTA.L WV Is the second whiteBrightness adjustment of color light emitting device, S WH Is the light emitting area of the first white light emitting device, S WV Δ L is a total luminance adjustment amount for the light emitting area of the second white light emitting device.
According to a third aspect of the present disclosure, there is provided a driver of a display substrate for driving the display substrate of the first aspect of the present disclosure, the driver comprising a memory and a processor, the memory storing instructions, and the processor executing the instructions to execute the driving method according to the above-mentioned embodiments.
According to a fourth aspect of the present disclosure, there is provided a display device comprising the display substrate of the first aspect of the present disclosure.
Drawings
Fig. 1 is a layout view of a display substrate according to an embodiment of the present disclosure.
Fig. 2a is a minimal repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 2b shows a pixel region in fig. 2 a.
Fig. 3a is a minimal repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 3b shows a pixel region in fig. 3 a.
Fig. 4a is a minimum repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 4b shows a pixel region in fig. 4 a.
Fig. 5a is a minimal repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 5b shows a pixel region in fig. 5 a.
Fig. 6a is a minimal repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 6b shows a pixel region in fig. 6 a.
Fig. 7a is a minimal repeating unit of a display substrate according to an embodiment of the present disclosure.
Fig. 7b is a pixel region in fig. 7 a.
Fig. 8 is a flowchart of a driving method of an embodiment of the present disclosure.
Fig. 9 is a block diagram of a driver of an embodiment of the present disclosure.
The reference signs are: 1. a pixel island region; 2. connecting the bridge region; 3. kong Caoou; p, a pixel area; r, a first color light emitting device; G. a second color light emitting device; B. a third color light emitting device; w, white light emitting device; w1, a first white light emitting device; w2, a second white light emitting device; 100. a memory; 200. a processor.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and the detailed description below.
Referring to fig. 1 to 7b, an embodiment of the present disclosure provides a display substrate, including a plurality of pixel island regions 1 spaced apart from each other, a plurality of hole groove regions 3, and a connecting bridge region 2 located between the pixel island regions 1 and the hole groove regions 3, the pixel island regions 1 are arranged in an array along a first direction and a second direction, one connecting bridge region 2 is disposed on each of two sides of each pixel island region 1 along the first direction, one connecting bridge region 2 is disposed on each of two sides of each pixel island region 1 along the second direction, and two connecting bridge regions 2 are formed between adjacent pixel island regions 1; four pixel regions P are arranged in the pixel island region 1 and four connecting bridge regions 2 at the periphery of the pixel island region, the four pixel regions P are arranged in two rows along a first direction and are arranged in two rows along a second direction, a first color light-emitting device R, a second color light-emitting device G, a third color light-emitting device B and a white light-emitting device W are arranged in each pixel region P, the first color light-emitting device R, the second color light-emitting device G and the third color light-emitting device B are located in the pixel island region 1, and the white light-emitting device W is located in the connecting bridge region 2 at the outer side of the corresponding first color light-emitting device R, the second color light-emitting device G and the third color light-emitting device B.
The display substrate is a stretchable flexible display substrate. The first direction is, for example, a row direction and the second direction is, for example, a column direction.
The first color light emitting device R, the second color light emitting device G, the third color light emitting device B, and the white light emitting device W are, for example, organic light emitting diodes. Of course, they may be other types of light emitting devices, all of which are quantum dot light emitting diodes. As long as it is suitable for preparation on a stretchable flexible substrate.
The first color is, for example, red, the second color is, for example, green, and the third color is, for example, blue.
The material of the flexible substrate is, for example, a polyester-based polymer, a silicone-based polymer, an acrylic polymer, or a copolymer thereof.
The hole-groove area 3 may be a through groove penetrating the whole display substrate, or a groove with a bottom at a certain distance from the flexible substrate.
Not only the color light emitting device but also the white light emitting device W is provided in the bridge region 2 in the pixel island region 1.
The connecting bridge region 2 is provided with traces therein, which connect the colored light emitting devices, and certainly connect the white light emitting devices W.
Fig. 1 shows four minimal repeating units of the display substrate. Figure 2a shows one of the smallest repeating units.
When the display substrate is stretched, the density of the light emitting devices may change, thereby causing a change in brightness in a certain area. If the gray levels of the respective light emitting devices are set according to the original display data, unevenness in luminance is caused. The light emitting devices constituting one pixel in the embodiments of the present disclosure have not only the color light emitting devices of three colors but also the white light emitting device W disposed on their outer sides, which increases more flexible operation space for adjustment of luminance.
In some embodiments, referring to fig. 2a, 3a, 4a, 5a, 6a and 7a, the white light emitting devices W in the four pixel regions P are arranged in a central symmetry.
This is to make the distribution of the white light emitting devices W more uniform, so that the deformation of the pixel island region 1 and the bridge region 2 is more uniform when the display substrate is stretched.
It should be understood that the geometric features of the light emitting devices described in this disclosure are all geometric characteristics of their light emitting areas.
In some embodiments, referring to fig. 2a, 3a, 4a, 5a, 6a and 7a, a first white light emitting device W1 and a second white light emitting device W2 are disposed within the pixel region P, the first white light emitting device W1 is located at the bridge region 2 extending along the first direction, and the second white light emitting device W2 is located at the bridge region 2 extending along the second direction.
The first white light emitting device W1 and the second white light emitting device W2 may be the same in size or different in size.
The shapes of the first white light emitting device W1 and the second white light emitting device W2 may be the same or different.
The white light emitting device W shown in the drawings has a rectangular shape, and is not limited thereto in practice.
Of course, in one minimum repeating unit, only one white light emitting device W may be provided.
In some embodiments, referring to fig. 2a, 3a, 4a, 5a and 6a, the first color light emitting devices R in the pixel island region 1 are periodically arranged along the first direction and periodically arranged along the second direction, the second color light emitting devices G in the pixel island region 1 are periodically arranged along the first direction and periodically arranged along the second direction, and the third color light emitting devices B in the pixel island region 1 are periodically arranged along the first direction and periodically arranged along the second direction; alternatively, referring to fig. 7a, the first color light emitting devices R in the pixel island region 1 are arranged in a central symmetry, the second color light emitting devices G in the pixel island region 1 are arranged in a central symmetry, and the third color light emitting devices B in the pixel island region 1 are arranged in a central symmetry.
The two arrangement modes are uniform, and when the display substrate is stretched, the stress is not distributed more uniformly.
In some embodiments, referring to fig. 2a, the first color light emitting device R, the second color light emitting device G, and the third color light emitting device B are each in the shape of a stripe extending in the first direction or each in the shape of a stripe extending in the second direction (this case is not shown).
In some embodiments, referring to fig. 3a, 4a, 5a, 6a and 7a, the central connecting lines of the first color light emitting device R, the second color light emitting device G and the third color light emitting device B in the same pixel region P are triangular.
A driving method of the display substrate is also provided, and the display substrate is applied to the display substrate. The driving method includes the following steps.
In step S1, a first deformation amount in a first direction and a second deformation amount in a second direction of an area where the pixel region P is located are determined.
For example, a two-dimensional image or a three-dimensional image of the shape of the display substrate can be obtained by imaging the display substrate (using a stereo camera), and the amount of deformation in tension or compression of different regions of the display substrate can be determined by a method of pattern analysis.
Further, for example, the distance between different positions of the display substrate and the ultrasonic wave emission source is obtained by using an ultrasonic distance measurement method, and the deformation amount of different areas of the display substrate is further calculated.
For example, a sensor capable of sensing strain is provided on the display substrate, and the amount of strain at different positions of the display substrate is detected from the display substrate itself.
The present disclosure does not limit how the amount of deformation at different locations of the display substrate is determined.
Referring to fig. 2b, the first direction is, for example, a row direction and the second direction is, for example, a column direction. In fig. 2b, H denotes a dimension of the pixel region P in the first direction, and V denotes a dimension of the pixel region P in the second direction.
In step S2, a total brightness adjustment amount of the corresponding pixel region P is determined according to the first and second deformation amounts.
The brightness value of the pixel region P when the display substrate is not deformed can be determined according to the current display data. This mapping relationship has been determined by testing at the time of product shipment. When the occupied area of the pixel region P is increased, the density of the light emitting areas of the light emitting devices in the pixel region P is decreased, and the luminance is decreased, it is expected that the overall luminance of the light emitting devices in the pixel region P should be adjusted. When the occupied area of the pixel region P increases, the density of the light emitting areas of the light emitting devices in the pixel region P increases, and the luminance becomes brighter, it is expected that the overall luminance of the light emitting devices in the pixel region P should be reduced.
If the overall brightness needs to be reduced, the brightness of the color light emitting device can be reduced, and the brightness of the white light emitting device W can also be reduced. If the overall brightness needs to be adjusted, the brightness of the color light-emitting device can be adjusted and increased, and the brightness of the white light-emitting device W can also be adjusted and increased.
For example, the product of the adjusted overall luminance and the area of the current pixel region P is made equal to the product of the overall luminance of the pixel region P and the area of the pixel region P when the display substrate is driven in accordance with the original image data without being stretched.
Of course, other algorithms are possible for how much the overall brightness is adjusted to increase or decrease.
In step S3a, when the total brightness adjustment amount is less than 0, if the white light emitting device W in the current pixel region P does not emit light, the brightness of the first color light emitting device R, the second color light emitting device G, and the third color light emitting device B in the pixel region P is adjusted and reduced in equal proportion according to the total brightness adjustment amount, and if the white light emitting device W in the current pixel region P emits light, the brightness of the white light emitting device W is adjusted and reduced according to the total brightness adjustment amount.
Obviously, if the white light emitting device W does not emit light at present, the brightness of the white light emitting device W cannot be adjusted any more. If the current white light emitting device W emits light, the luminance of the white light emitting device W is preferentially adjusted and reduced, so that the luminance of the pixel region P can be reduced, and the influence on the overall presented color is small.
In step S3B, in the case where the total luminance adjustment amount is equal to 0, the luminance of the first, second, third, and white light emitting devices R, G, B, and W in the pixel region P is maintained.
Since the overall brightness of the pixel region P does not need to be adjusted, no correction is made to the display data.
In step S3c, when the total brightness adjustment amount is greater than 0 and at least one of the brightnesses of the first color light emitting device R, the second color light emitting device G, and the third color light emitting device B in the pixel region P is the lowest brightness, the brightness of the white light emitting device W is maintained, and the brightness of the light emitting device other than the lowest brightness among the first color light emitting device R, the second color light emitting device G, and the third color light emitting device B in the pixel region P is increased.
The entire light emission color of the pixel region P tends to be a color mixed with two primary colors or a single primary color, and the color light emitting device whose brightness is not the lowest brightness is adjusted while the brightness of the white light emitting device W is maintained, so that the influence on the accuracy of the color is small, and the reduction in brightness due to stretching can be compensated.
In step S3d, in the case where the total brightness adjustment amount is greater than 0 and the brightness of the first color light emitting device R, the second color light emitting device G, and the third color light emitting device B in the pixel region P is not the lowest brightness, the overall brightness of the white light emitting device W in the pixel region P is adjusted according to the total brightness adjustment amount.
The entire light emission color of the pixel region P tends to be a color mixed with three primary colors, the entire luminance of the white light emitting device W is adjusted, the influence on the accuracy of the color is small, and the luminance reduction due to stretching can be compensated.
Specifically, the following process is performed for the case where the first white light emitting device W1 and the second white light emitting device W2 are disposed in the pixel region P, the first white light emitting device W1 is located at the connection bridge region 2 extending in the first direction, and the second white light emitting device W2 is located at the connection bridge region 2 extending in the second direction.
In the case where both the first and second deformation amounts are greater than 0, the luminance adjustment amounts of the first and second white light emitting devices W1 and W2 are determined according to the following formulas:
Figure GDA0003708741520000081
the pixel region P is stretched in both the first and second directions to increase the luminance by an amount equal to the light emitting areas of the first and second white light emitting devices W1 and W2.
In the case where the first deformation amount is greater than 0 and the second deformation amount is less than 0, the luminance adjustment amounts of the first and second white light emitting devices W1 and W2 are determined according to the following formulas:
ΔL WH ＝ΔL、ΔL WV ＝0。
the pixel region P is stretched in the first direction and compressed in the second direction, and the desired amount of brightness adjustment is fully undertaken by the first white led.
In the case where the first deformation amount is less than 0 and the second deformation amount is greater than 0, the luminance adjustment amounts of the first and second white light emitting devices W1 and W2 are determined according to the following formulas:
ΔL WH ＝0、ΔL WV ＝ΔL。
the pixel region P is stretched in the second direction and compressed in the first direction, and the desired amount of brightness adjustment is fully carried by the second white led.
Wherein, Δ L WH The brightness adjustment amount, Δ L, of the first white light emitting device W1 WV Is the brightness adjustment amount, S, of the second white light emitting device W2 WH Is the light emitting area, S, of the first white light emitting device W1 WV Δ L is a total luminance adjustment amount for the light emitting area of the second white light emitting device W2.
Thus, flexible adjustment of the brightness of the pixel region P is realized.
After the adjusted brightness of each light emitting device is determined, the gray scale of the adjusted light emitting device is reversely deduced according to the Gamma curve of the display substrate debugged at the time of factory shipment.
Embodiments of the present disclosure also provide a driver of a display substrate, referring to fig. 8, for driving the aforementioned display substrate, where the driver includes a memory 100 and a processor 200, the memory 100 stores instructions, and the processor 200 executes the instructions to execute the aforementioned driving method.
The memory 100 is any component having a storage function, such as a read only memory 100, a random access memory 100, a flash memory, an optical disc, and a magnetic disc. The processor 200 is, for example, a central processing unit 200, a server, a single chip microcomputer, a micro processing unit (MCU), or any other components having an arithmetic function. Of course, the memory 100 and the processor 200 may be integrated in the same component.
An embodiment of the present disclosure further provides a display device, including the foregoing display substrate.
The display device is, for example, any product or component with a display function, such as a light emitting diode display panel, a light emitting diode display module, a mobile phone, a display and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (11)

1. A driving method of a display substrate comprises a plurality of pixel island regions, a plurality of hole groove regions and a connecting bridge region, wherein the pixel island regions are separated from one another, the connecting bridge region is positioned between the pixel island regions and the hole groove regions, and the pixel island regions are arranged in an array mode along a first direction and a second direction which are intersected; the pixel island region and four connecting bridge regions arranged on the periphery of the pixel island region are internally provided with four pixel regions, the four pixel regions are arranged in two rows along the first direction and in two rows along the second direction, each pixel region is internally provided with a first color light-emitting device, a second color light-emitting device, a third color light-emitting device and a white light-emitting device, the first color light-emitting device, the second color light-emitting device and the third color light-emitting device are positioned in the pixel island region, and the white light-emitting device is positioned at the outer sides of the corresponding first color light-emitting device, the second color light-emitting device and the third color light-emitting device; characterized in that the driving method comprises:
determining a first deformation quantity of the area where the pixel area is located along the first direction and a second deformation quantity of the area where the pixel area is located along the second direction;
determining the total brightness adjustment quantity of the corresponding pixel area according to the first deformation quantity and the second deformation quantity;
under the condition that the total brightness adjustment amount is less than 0, if the white light emitting device in the pixel area does not emit light, the brightness of the first color light emitting device, the second color light emitting device and the third color light emitting device in the pixel area is adjusted and reduced in an equal proportion according to the total brightness adjustment amount, and if the white light emitting device in the pixel area emits light, the brightness of the white light emitting device is adjusted and reduced according to the total brightness adjustment amount;
keeping the brightness of the first color light emitting device, the second color light emitting device, the third color light emitting device and the white light emitting device in the pixel region unchanged under the condition that the total brightness adjustment amount is equal to 0;
when the total brightness adjustment amount is larger than 0 and at least one of the brightness of the first color light-emitting device, the brightness of the second color light-emitting device and the brightness of the third color light-emitting device in the pixel area is the lowest brightness, keeping the brightness of the white light-emitting device unchanged, and adjusting the brightness of the light-emitting device which is not the lowest brightness in the first color light-emitting device, the second color light-emitting device and the third color light-emitting device in the pixel area;
and under the condition that the total brightness adjustment amount is larger than 0 and the brightness of the first color light-emitting device, the second color light-emitting device and the third color light-emitting device in the pixel area is not the lowest brightness, adjusting the overall brightness of the white light-emitting device in the pixel area according to the total brightness adjustment amount.
2. The driving method according to claim 1, wherein one connecting bridge region is provided on each of both sides of each pixel island region in the first direction, and one connecting bridge region is provided on each of both sides of each pixel island region in the second direction, that is, four connecting bridge regions provided at the periphery of the pixel island region; two connecting bridge regions are formed between the adjacent pixel island regions;
the white light emitting device is positioned in the connecting bridge area outside the corresponding first color light emitting device, the second color light emitting device and the third color light emitting device.
3. The driving method according to claim 1, wherein the white light emitting devices in the four pixel regions are arranged in a central symmetry manner.
4. The driving method according to claim 3, wherein a first white light emitting device and a second white light emitting device are provided in the pixel region, the first white light emitting device being located in a bridge region extending in the first direction, the second white light emitting device being located in a bridge region extending in the second direction.
5. The driving method according to claim 4, wherein in the case where the total brightness adjustment amount is greater than 0 and the brightness of the first color light emitting device, the second color light emitting device, and the third color light emitting device in the pixel region is not the lowest brightness, adjusting the overall brightness of the white light emitting device in the pixel region according to the total brightness adjustment amount comprises:
determining the luminance adjustment amounts of the first and second white light emitting devices according to the following formula in the case where both the first and second deformation amounts are greater than 0:
Figure FDA0003648403050000021
in the case where the first deformation amount is greater than 0 and the second deformation amount is less than 0, the luminance adjustment amounts of the first and second white light emitting devices are determined according to the following formula:
ΔL WH ＝ΔL、ΔL WV ＝0；
in the case where the first deformation amount is less than 0 and the second deformation amount is greater than 0, the luminance adjustment amounts of the first and second white light emitting devices are determined according to the following formulas:
ΔL WH ＝0、ΔL WV ＝ΔL；
wherein, Δ L WH As the brightness adjustment amount of the first white light emitting device,. DELTA.L WV For the brightness adjustment of the second white light emitting device, S WH Is the light emitting area of the first white light emitting device, S WV Δ L is a total luminance adjustment amount for the light emitting area of the second white light emitting device.
6. The driving method according to claim 1, wherein the first color light emitting devices in the pixel island are arranged periodically in the first direction and arranged periodically in the second direction, the second color light emitting devices in the pixel island are arranged periodically in the first direction and arranged periodically in the second direction, and the third color light emitting devices in the pixel island are arranged periodically in the first direction and arranged periodically in the second direction; or
The first color light emitting devices in the pixel island region are arranged in a central symmetry mode, the second color light emitting devices in the pixel island region are arranged in a central symmetry mode, and the third color light emitting devices in the pixel island region are arranged in a central symmetry mode.
7. The driving method according to claim 1, wherein the first color light emitting device, the second color light emitting device, and the third color light emitting device are each in a stripe shape extending in the first direction or in a stripe shape extending in the second direction.
8. The driving method as claimed in claim 1, wherein the connecting lines of the centers of the first color light emitting device, the second color light emitting device and the third color light emitting device in the same pixel region are triangular.
9. The driving method according to any one of claims 1 to 8, wherein the first color light emitting device, the second color light emitting device, and the third color light emitting device are each one of a red organic light emitting diode, a green organic light emitting diode, and a blue organic light emitting diode, and the white light emitting device is a white organic light emitting diode.
10. A driver for driving a display substrate for display, the driver comprising a memory and a processor, the memory storing instructions, the processor executing the instructions to perform the driving method according to any one of claims 1 to 9.
11. A display device comprising a driver as claimed in claim 10 and a corresponding display substrate.
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