CN112599096B - Pixel driving structure, pixel driving method and display device - Google Patents
Pixel driving structure, pixel driving method and display device Download PDFInfo
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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
- G09G3/22—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]
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
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Abstract
The invention provides a pixel driving structure, a pixel driving method and a display device, wherein the pixel driving structure comprises a control circuit and a plurality of pixel units, the pixel units are arranged in a matrix manner, each pixel unit comprises a plurality of sub-pixels, and each sub-pixel comprises a red light pixel, a blue light pixel, a green light pixel and a white light pixel; the control circuit is electrically connected with the sub-pixels to control at least one color of the red pixel, the blue pixel, the green pixel and the white pixel in the sub-pixels to be turned on or off. The technical scheme of the invention relates to the technical field of OLED display, a pixel unit is composed of a red pixel, a blue pixel, a green pixel and a white pixel, and is used for controlling the opening of sub-pixels with corresponding colors to present red, green or blue, and when the preset luminance is not reached, the white pixel is simultaneously opened, so that the compensation effect is realized through the white pixel, and the luminance value of a pixel element is improved.
Description
Technical Field
The invention relates to the technical field of OLED (organic light emitting diode) display, in particular to a pixel driving structure, a pixel driving method and display equipment.
Background
An OLED (organic light-Emitting Diode), also called an organic electroluminescent Display, an organic light-Emitting semiconductor (OLED). The OLED is a current-type organic light emitting device, and emits light by injection and recombination of carriers, and the intensity of light emission is proportional to the injected current. Under the action of an electric field, holes generated by an anode and electrons generated by a cathode move, are respectively injected into a hole transport layer and an electron transport layer, and migrate to a light emitting layer. When the two meet at the light emitting layer, energy excitons are generated, thereby exciting the light emitting molecules to finally generate visible light. However, in the prior art, as the size of the glass substrate is larger and larger, the luminance value of the OLED display panel is also reduced, thereby resulting in reduced comfort for users.
Disclosure of Invention
The invention mainly aims to provide a pixel driving structure, a pixel driving method and a display device, and aims to solve the problem of luminance value reduction in OLED display in the prior art.
In order to achieve the above object, the present invention provides a pixel driving structure, which includes a control circuit and a plurality of pixel units, wherein the pixel units are arranged in a matrix, each pixel unit includes a plurality of sub-pixels, and each sub-pixel includes a red pixel, a blue pixel, a green pixel, and a white pixel; the control circuit is electrically connected with the sub-pixels to control the sub-pixels of at least one color of the red light pixel, the blue light pixel, the green light pixel and the white light pixel in the sub-pixels to be switched on or switched off.
Optionally, the control circuit includes a plurality of transverse wires and a plurality of longitudinal wires, the plurality of transverse wires are arranged at intervals, a row of the sub-pixels is arranged between two adjacent transverse wires, and the sub-pixels are connected in parallel to a corresponding row of the transverse wires; the plurality of longitudinal conducting wires are arranged at intervals, a column of sub-pixels are arranged between every two adjacent longitudinal conducting wires, and the sub-pixels are connected in parallel to the corresponding column of longitudinal conducting wires.
Optionally, the red light pixel, the blue light pixel, the green light pixel and the white light pixel are arranged along a preset sequence.
Optionally, the areas of the red, blue, green and white pixels are different in size.
Optionally, the sub-pixel includes an organic light source and a quantum layer, and the quantum layer is disposed on a light emitting surface side of the organic light source; wherein the light beam emitted by the organic light source transmits through the quantum layer to convert the color of the light beam.
In addition, to solve the above problem, the present invention further provides a pixel driving method, including the following steps:
acquiring an image to be displayed, and analyzing the image to be displayed to acquire color information;
and acquiring luminance information according to the color information, and controlling the red light pixel, the blue light pixel, the green light pixel and the white light pixel in the pixel unit to be turned on or turned off according to the luminance information.
Optionally, the step of obtaining luminance information according to the color information, and controlling the red pixel, the blue pixel, and the green pixel in the pixel unit to be turned on or off according to the luminance information includes:
judging whether the color information is white;
when the color information is not white, acquiring the luminance proportion of the red light pixel, the blue light pixel and the green light pixel in the color information;
and turning on the red light pixel, the blue light pixel and the green light pixel according to the luminance proportion.
Optionally, after the step of turning on the red pixel, the blue pixel and the green pixel according to the luminance ratio, the method further includes:
when the sum of the luminance values is larger than a preset luminance value, closing the white light pixel;
and when the sum of the luminance values is smaller than a preset luminance value, the white light pixel is started.
Optionally, after the step of determining whether the color information is white, the method further includes:
and when the color information is white, simultaneously starting the sub-pixels to comprise a red pixel, a blue pixel, a green pixel and a white pixel.
In addition, in order to solve the above problems, the present invention further provides a display device, which includes a back plate, a glass substrate, and the pixel driving structure described above, where the back plate is disposed opposite to the glass substrate, and the pixel driving structure is disposed between the back plate and the glass substrate.
In the technical scheme of the invention, the pixel unit is composed of the red light pixel, the blue light pixel, the green light pixel and the white light pixel, compared with a three-primary-color pixel unit, when displaying, the control circuit controls the sub-pixels of corresponding colors to be started, so that the pixel unit presents red, green or blue, and when the red light pixel, the blue light pixel and the green light pixel do not reach preset luminance, the white light pixel is started at the same time, so that the compensation effect is realized through the white light pixel, and the luminance value of the pixel element is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a pixel driving method according to a third embodiment of the present invention;
FIG. 2 is a flowchart illustrating a fourth embodiment of a pixel driving method according to the present invention;
FIG. 3 is a schematic flow chart illustrating a fifth embodiment of a pixel driving method according to the present invention;
FIG. 4 is a schematic structural diagram of a pixel unit in a pixel driving structure according to the present invention;
FIG. 5 is a schematic structural diagram of a pixel driving structure according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a pixel driving structure according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pixel driving structure according to another embodiment of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | Green pixel |
| 30 | |
40 | |
| 50 | Organic light source | 60 | |
| 70 | Optical filter |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The first embodiment is as follows:
the invention provides a pixel driving structure, please refer to fig. 4-7, which comprises a control circuit and a plurality of pixel units, wherein the pixel units are arranged in a matrix manner and comprise a plurality of sub-pixels, and the sub-pixels comprise a red light pixel 10, a blue light pixel 30, a green light pixel 20 and a white light pixel 40; the control circuit is electrically connected with the sub-pixels to control at least one color of the red pixel 10, the blue pixel 30, the green pixel 20 and the white pixel 40 to be turned on or off.
In practical applications, the light beams (color light) emitted by the red pixel 10, the blue pixel 30 and the green pixel 20 are added in different luminance proportions by the red pixel 10, the blue pixel 30 and the green pixel 20, so as to generate light beams of different colors. When a plurality of the pixel units are arranged in a matrix manner and mutually cooperate by emitting light beams of different colors, the display of an image is realized.
In this embodiment, the white pixel 40 is added in addition to the red pixel 10, the blue pixel 30 and the green pixel 20 in the pixel unit. The control circuit is connected to each of the sub-pixels through a wire to individually control the red pixel 10, the blue pixel 30, the green pixel 20, or the white pixel 40 to be turned on or off. Specifically, the control circuit comprises a plurality of transverse conducting wires and a plurality of longitudinal conducting wires, the transverse conducting wires are arranged at intervals, a row of sub-pixels is arranged between every two adjacent transverse conducting wires, and the sub-pixels are connected in parallel on the corresponding row of transverse conducting wires; the plurality of longitudinal conducting wires are arranged at intervals, a column of sub-pixels are arranged between every two adjacent longitudinal conducting wires, and the sub-pixels are connected in parallel to the corresponding column of longitudinal conducting wires. The transverse wires and the longitudinal wires are arranged perpendicularly, in this embodiment, the plurality of transverse wires and the plurality of longitudinal wires are arranged in a mesh shape in a staggered mode, one sub-pixel is arranged in each mesh, the sub-pixels in each row are electrically connected with the same adjacent transverse wire, the sub-pixels in each column are electrically connected with the same adjacent longitudinal wire, and therefore the color of the sub-pixels at different positions is controlled through the control circuit according to the sequence of rows and columns, and finally the images are formed through arrangement and combination.
For example, when red light needs to be displayed, the control circuit only turns on the red pixels 10 of the corresponding row and column, and the same principle is used when blue light or green light needs to be displayed; when other colors need to be displayed, the control circuit controls the red pixel 10, the blue pixel 30 and the green pixel 20 to be added with different luminances so as to form light beams with different colors; when white light needs to be displayed, the control circuit controls the red light pixel 10, the blue light pixel 30, the green light pixel 20 and the white light pixel 40 to be simultaneously turned on, that is, the white light emitted by the white light pixel 40 is compensated, so that the luminance of the white light is improved, and the display effect is improved. It should be noted that, when displaying other colors, the control circuit may also control the white light source to be turned on, and adjust the brightness thereof to compensate the luminance requirements of different colors, thereby achieving the optimal display effect.
In the technical scheme of the invention, the pixel unit is composed of the red light pixel 10, the blue light pixel 30, the green light pixel 20 and the white light pixel 40, compared with a three-primary-color pixel unit, when displaying, the control circuit controls the sub-pixels of corresponding colors to be turned on, so that the pixel unit presents red, green or blue, and when the red light pixel 10, the blue light pixel 30 and the green light pixel 20 do not reach a preset luminance, the white light pixel 40 is turned on at the same time, so that a compensation effect is realized through the white light pixel 40, and a luminance value of the pixel element is improved.
Further, the areas of the red light pixel 10, the blue light pixel 30, the green light pixel 20, and the white light pixel 40 are different in size, that is, the sizes of the red light pixel 10, the blue light pixel 30, the green light pixel 20, and the white light pixel 40 are also adjustable, and since the light emitting efficiency and the light emitting life of each color pixel are also different, in order to ensure the uniformity of the light, the light emitting efficiency of the red light pixel 10, the blue light pixel 30, the green light pixel 20, and the white light pixel 40 should be the same, so that the sizes of the red light pixel 10 may be different from each other, that is, the size of the red light pixel 10 may be larger than the size of the blue light pixel 30, the size of the green light pixel 20 may be larger than the size of the white light pixel 40, and so on. The number of the red pixels 10, the blue pixels 30, the green pixels 20, and the white pixels 40 is at least one, for example, two red pixels 10, one green pixel 20, one blue pixel 30, and one white pixel 40 may be provided; or one red pixel 10, one blue pixel 30, two white pixels 40, three green pixels 20, etc. In this embodiment, in order to meet the user's requirement, the numbers of the red pixels 10, the blue pixels 30 and the green pixels 20 can be adjusted, so as to change the display luminance, the color saturation and the like.
Further, the red pixel 10, the blue pixel 30, the green pixel 20, and the white pixel 40 are arranged in a predetermined sequence. As shown in fig. 4, the arrangement order of the red light pixel 10, the blue light pixel 30, the green light pixel 20, and the white light pixel 40 can be adjusted, that is, the preset order is the red light pixel 10, the blue light pixel 30, the green light pixel 20, and the white light pixel 40 from left to right, or the blue light pixel 30, the red light pixel 10, the green light pixel 20, and the white light pixel 40 can also be the same. The arrangement order of the red light pixels 10, the blue light pixels 30, the green light pixels 20 and the white light pixels 40 does not constitute a limitation of the present invention. Two adjacent pixel light sources can be driven independently, namely only the red pixel 10 or the blue pixel 30 and the like are turned on; meanwhile, the shape of the sub-pixels can be changed, so as to indirectly change the installation manner of each sub-pixel in the pixel light source, for example, a plurality of the white light pixels 40, the red light pixels 10, the green light pixels 20 and the blue light pixels 30 are arranged in a triangular manner, or arranged in a rectangular manner, or arranged in a circular manner, etc.
Further, the number of the red pixels 10, the blue pixels 30, the green pixels 20, or the white pixels 40 is at least one. In this embodiment, in order to meet the requirement of the user, the number of the red pixels 10, the blue pixels 30, the green pixels 20, or the white pixels 40 may be adjusted, so as to change the display luminance, the color saturation, and the like, thereby improving the compatibility of the present invention.
Specifically, the sub-pixel includes an organic light source 50 and a Quantum layer 60(QD, Quantum Dot), and the Quantum layer 60 is disposed on a light emitting surface side of the organic light source 50. In the present embodiment, the OLED display technology is taken as an example, wherein the light beam emitted by the organic light source 50 transmits through the quantum layer 60 to convert the color of the light beam. The sub-pixels with different colors emit light through the organic light source 50, and when the light beam emitted from the organic light source 50 passes through the quantum layer 60, the quantum layer 60 may convert the color of the light beam emitted from the organic light source 50, for example, when the quantum layer 60 is a red quantum layer 60, the color of the light beam emitted from the organic light source 50 is converted into red, and when the quantum layer 60 is a green quantum layer 60, the color of the light beam emitted from the organic light source 50 is converted into green, and so on. Meanwhile, the quantum layer 60 can be used to improve the conversion efficiency of the light beam emitted by the organic light source 50, thereby indirectly improving the light emitting efficiency of the organic light source 50 and making the color brighter.
As an embodiment, the organic light source 50 may be configured as a white light source, that is, the color of the light beam emitted by the organic light source 50 is white, and specifically, the white light source includes a Yellow-Green emitting layer (Yellow-Green EML) and two Blue emitting layers (Blue EML), and the Yellow-Green emitting layer is disposed between the two Blue emitting layers so that the light beams emitted by the Yellow-Green emitting layer and the two Blue emitting layers are superimposed to form a white light beam. In addition, the white light source also comprises an Electron Transport Layer (ETL), an Electron Injection Layer (EIL), a Hole Transport Layer (HTL), a positive charge generation layer (p.cgl), a negative charge generation layer (n.cgl), and the like, which are combined in a specific manner to realize a light emitting function.
When the white light source is used as the light source, referring to fig. 5, in order to realize that the sub-pixel emits a red light beam (i.e. forms the red light pixel 10), the red quantum layer 60 may be used to cover the red quantum layer 60 on the white light source, so that the color of the light beam passing through the red quantum layer 60 is changed into red, and the red light pixel 10 is formed. In addition, in order to further improve the Color reproducibility of the light beam, a Filter 70(C/F, Color Filter) may be further used, where the Filter 70 is disposed on the display screen, and a projection position of the quantum layer 60 overlaps a projection position of the Filter 70, that is, after the light beam passes through the red quantum layer 60, the light beam passes through the Filter 70 to improve the Color reproducibility of the light beam. It should be noted that the color of the filter 70 is the same as the color of the quantum layer 60, that is, when the quantum layer 60 is red, the filter 70 is the red filter 70, so that the color reproducibility is higher after the red light beam passing through the red quantum layer 60 passes through the red filter 70 again, thereby further improving the display effect.
Similarly, in order to realize that the sub-pixel emits a green light beam (i.e., forms the green pixel 20), the green quantum layer 60 may be used to cover the white light source with the green quantum layer 60, so that the color of the light beam transmitted through the green quantum layer 60 is changed into green, thereby forming the green pixel 20. In addition, as in the red pixel 10, a green filter 70 may be used to further improve the color reproducibility of the light beam, and it is only necessary to ensure that the color of the filter 70 is consistent with the color of the quantum layer 60.
In practical applications, since the conversion efficiency of the blue light beam is high, in the embodiment, referring to fig. 6, it is not necessary to provide the blue quantum layer 60 to convert the light beam emitted from the white light source, and only the blue filter 70 is provided to filter the light beam into the blue light beam.
As another embodiment, the organic light source 50 may be a Blue light source, that is, the color of the light beam emitted by the organic light source 50 is Blue, specifically, the Blue light source includes at least three Blue light emitting layers (Blue EMLs), and in addition, the white light source further includes an Electron Transport Layer (ETL), an Electron Injection Layer (EIL), a Hole Transport Layer (HTL), a positive charge generation layer (p.cgl), a negative charge generation layer (n.cgl), and the like, and the light emitting function is realized by combining the layers in a specific manner.
When the blue light source is used as the light source, similarly, referring to fig. 5, in order to realize that the sub-pixel emits a red light beam (i.e. forms the red light pixel 10), the red quantum layer 60 may be used to cover the red quantum layer 60 on the blue light source, so that the color of the light beam transmitted through the red quantum layer 60 is changed into red, and the red light pixel 10 is formed. In addition, in order to further improve the Color reproducibility of the light beam, a Filter 70(C/F, Color Filter) may be further used, where the Filter 70 is disposed on the display screen, and a projection position of the quantum layer 60 overlaps a projection position of the Filter 70, that is, after the light beam passes through the red quantum layer 60, the light beam passes through the Filter 70 to improve the Color reproducibility of the light beam. It should be noted that the color of the filter 70 is the same as the color of the quantum layer 60, that is, when the quantum layer 60 is red, the filter 70 is the red filter 70, so that the color reproducibility is higher after the red light beam passing through the red quantum layer 60 passes through the red filter 70 again, thereby further improving the display effect.
Similarly, in order to realize that the sub-pixel emits a green light beam (i.e., forms the green pixel 20), the green quantum layer 60 may be used to cover the blue light source with the green quantum layer 60, so that the color of the light beam transmitted through the green quantum layer 60 is changed to green, thereby forming the green pixel 20. In addition, as in the red pixel 10, a green filter 70 may be used to further improve the color reproducibility of the light beam, and it is only necessary to ensure that the color of the filter 70 is consistent with the color of the quantum layer 60.
Different from the white light source, the blue light source capable of emitting the blue light beam is adopted, and in practical application, the light emitting efficiency of the blue light beam is high, so that the optical filter 70 is not required to be arranged in the embodiment, please refer to fig. 7, that is, the light beam emitted by the blue light source is directly emitted through the display screen.
Example two:
a display device comprises a back plate, a glass substrate and the pixel driving structure, wherein the back plate is arranged opposite to the glass substrate, and the pixel driving structure is arranged between the back plate and the glass substrate.
Example three:
referring to fig. 1, fig. 1 is a flow chart illustrating a pixel driving method according to an embodiment of the present invention, the pixel driving method including the steps of:
step S10: acquiring an image to be displayed, and analyzing the image to be displayed to acquire color information;
step S20: and acquiring luminance information according to the color information, and controlling the red light pixel 10, the blue light pixel 30, the green light pixel 20 and the white light pixel 40 in the pixel unit to be turned on or turned off according to the luminance information.
After the image to be displayed is obtained, the image to be displayed is analyzed to obtain the color information of the pixel unit at each position, and the control circuit controls the pixel unit to emit the light beam with the corresponding color. Then, one or more of the red pixel 10, the blue pixel 30, the green pixel 20 and the white pixel 40 are turned on according to the luminance information, for example, the red pixel 10 and the white pixel 40 are turned on simultaneously, or the blue pixel 30 and the white pixel 40 are turned on simultaneously, and compared with the three primary color pixel unit, when displaying, the luminance value is compensated by the white pixel 40, so as to increase the luminance value of the pixel element.
Example four:
specifically, referring to fig. 2, fig. 2 is a schematic flow chart of another embodiment of the pixel driving method according to the present invention based on the third embodiment, where the step S20 includes:
step S21: judging whether the color information is white;
step S22: when the color information is not white, acquiring the luminance proportion of the red pixel 10, the blue pixel 30 and the green pixel 20 in the color information;
step S23: turning on the red pixel 10, the blue pixel 30 and the green pixel 20 according to the luminance ratio;
step S24: when the color information is white, the sub-pixels including the red pixel 10, the blue pixel 30, the green pixel 20 and the white pixel 40 are simultaneously turned on.
When the colors of the pixel units are represented by red, green and blue, the control circuit controls the sub-pixels of the corresponding colors to be turned on, for example, only controls the red pixel 10 to emit a red light beam when turned on, only controls the blue pixel 30 to emit a blue light beam when turned on, and only controls the green pixel 20 to emit a green light beam when turned on; when the pixel unit presents other colors, the light beams (color light) emitted by the red pixel 10, the blue pixel 30 and the green pixel 20 are added in different luminance proportions, so as to generate light beams with different colors; when the pixel unit presents white, the control circuit controls the red pixel 10, the blue pixel 30, the green pixel 20 and the white pixel 40 to be simultaneously turned on, and white light beams appear when the red pixel 10, the blue pixel 30 and the green pixel 20 are added; in the above process, the luminance of the pixel unit can be compensated by the white pixel 40 at the same time, so as to improve the display effect. And finally, a plurality of pixel units are arranged in a matrix mode, and when light beams with different colors are emitted to be matched with each other, the display of an image is realized.
Example five:
further, referring to fig. 3, fig. 3 is a flowchart illustrating a pixel driving method according to another embodiment of the present invention based on the fourth embodiment, wherein the step S22 includes:
step S221: when the sum of the luminance values is greater than a preset luminance value, turning off the white pixel 40;
step S222: and when the sum of the luminance values is smaller than a preset luminance value, turning on the white light pixel 40.
In practical applications, the luminance value of the pixel unit is not as high as possible, and a glaring effect may be generated when the luminance value is too high, and even the user may damage the eyesight, so that in order to avoid the influence of the too high luminance value on the display effect, the luminance value in the pixel unit needs to be obtained according to the luminance information, and when the luminance value of the pixel unit is smaller than the preset luminance value, the white pixel 40 is turned on to compensate the luminance; when the luminance value of the pixel unit is greater than the preset luminance value, the white pixel 40 is turned off to avoid the luminance value being too high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A pixel driving structure, comprising:
the pixel units are arranged in a matrix manner and comprise a plurality of sub-pixels, and the sub-pixels comprise red light pixels, blue light pixels, green light pixels and white light pixels;
the control circuit is electrically connected with the sub-pixels and used for acquiring an image to be displayed and analyzing the image to be displayed to acquire color information;
judging whether the color information is white;
when the color information is not white, acquiring the luminance proportion of the red light pixel, the blue light pixel and the green light pixel in the color information;
turning on the red light pixel, the blue light pixel and the green light pixel according to the luminance proportion;
when the sum of the luminance values of the red light pixel, the blue light pixel and the green light pixel is greater than a preset luminance value, closing the white light pixel;
and when the sum of the luminance values of the red light pixel, the blue light pixel and the green light pixel is smaller than a preset luminance value, the white light pixel is started.
2. The pixel driving structure according to claim 1, wherein the control circuit comprises:
the plurality of transverse conducting wires are arranged at intervals, a row of sub-pixels is arranged between every two adjacent transverse conducting wires, and the sub-pixels are connected in parallel on the corresponding row of transverse conducting wires;
the plurality of longitudinal conducting wires are arranged at intervals, one column of sub-pixels are arranged between every two adjacent longitudinal conducting wires, and the sub-pixels are connected in parallel on the corresponding column of longitudinal conducting wires.
3. The pixel driving structure according to claim 1, wherein the red, blue, green and white pixels are arranged in a predetermined sequence.
4. The pixel driving structure according to claim 1, wherein the red, blue, green and white pixels have different area sizes.
5. The pixel driving structure according to claim 1, wherein the sub-pixel comprises:
an organic light source;
the quantum layer is arranged on one side of the light emitting surface of the organic light source;
wherein the light beam emitted by the organic light source transmits through the quantum layer to convert the color of the light beam.
6. A pixel driving method, comprising:
acquiring an image to be displayed, and analyzing the image to be displayed to acquire color information;
judging whether the color information is white;
when the color information is not white, acquiring the luminance proportion of a red light pixel, a blue light pixel and a green light pixel in the color information;
turning on the red light pixel, the blue light pixel and the green light pixel according to the luminance proportion;
when the sum of the luminance values of the red light pixel, the blue light pixel and the green light pixel is greater than a preset luminance value, closing the white light pixel;
and when the sum of the luminance values of the red light pixel, the blue light pixel and the green light pixel is smaller than a preset luminance value, the white light pixel is started.
7. The pixel driving method according to claim 6, further comprising, after the step of determining whether the color information is white:
and when the color information is white, simultaneously turning on the red light pixel, the blue light pixel, the green light pixel and the white light pixel.
8. A display device comprising a backplane, a glass substrate, and the pixel drive structure of any of claims 1-5, the backplane being disposed opposite the glass substrate, the pixel drive structure being disposed between the backplane and the glass substrate.
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| KR20080009497A (en) * | 2006-07-24 | 2008-01-29 | 삼성전자주식회사 | Multi-color display device and driving method thereof |
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| KR101384993B1 (en) * | 2012-09-27 | 2014-04-14 | 삼성디스플레이 주식회사 | Method of opperating an organic light emitting display device, and organic light emitting display device |
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| CN104051672B (en) * | 2014-07-09 | 2019-01-01 | 深圳市华星光电技术有限公司 | OLED pixel structure |
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