CN111540314B - Display control method, control circuit, chip and electronic equipment - Google Patents

Display control method, control circuit, chip and electronic equipment Download PDF

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Publication number
CN111540314B
CN111540314B CN202010400888.3A CN202010400888A CN111540314B CN 111540314 B CN111540314 B CN 111540314B CN 202010400888 A CN202010400888 A CN 202010400888A CN 111540314 B CN111540314 B CN 111540314B
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sub
pixel
signal
display
selection unit
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CN111540314A (en
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尹吉
王涛涛
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Chip Wealth Technology Ltd
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Chip Wealth Technology Ltd
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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]
    • G09G3/3225—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] using an active matrix

Abstract

The invention provides a display control method, a control circuit, a chip and electronic equipment, which are applied to the field of OLED display control. The display control method is applied to a control circuit of an OLED display screen, the control circuit comprises a plurality of registers, and the method comprises the following steps: acquiring a plurality of sub-pixel output times of a first pixel display point according to display requirements; the first pixel display point is any one pixel display point of the OLED display screen, the first pixel display point comprises a plurality of sub-pixel points, and the output time of the plurality of sub-pixels is controlled in a one-to-one correspondence mode through the plurality of registers. And sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels. By arranging the plurality of registers, the output time of each sub-pixel point is independently adjustable, the display effect of the OLED display screen can be accurately controlled, and meanwhile, the power consumption of the OLED display screen is reduced.

Description

Display control method, control circuit, chip and electronic equipment
Technical Field
The present invention relates to the field of display control of Organic Light-Emitting diodes (OLEDs), and in particular, to a display control method, a control circuit, a chip, and an electronic device.
Background
With the continuous development of electronic technology, the mobile terminal needs smaller display power consumption to provide longer cruising ability; under the same condition, the OLED display has lower power consumption and cost compared with the current Thin Film Transistor (TFT) display, and the OLED display gradually replaces the TFT display adopted by the mobile terminal.
In the current display scheme of the OLED display screen, each pixel display point includes a plurality of sub-pixels, such as different sub-pixels of Red, Green, and Blue (RGB), and when the OLED display screen is controlled to display, different sub-pixel points of RGB are displayed according to the same time to form a color pixel, so as to display a target image. In the OLED display screen, an Active-Matrix Organic Light-Emitting Diode (AMOLED) display screen is commonly used, and the AMOLED display screen controls the charging time of each pixel display point to display a target image. However, the AMOLED employs one timing controller to control the charging time of all the sub-pixels in each pixel display point, resulting in that the output time of the sub-pixels under the same pixel display point is the same, and the output time of each sub-pixel cannot be adjusted individually, resulting in a larger power consumption of the AMOLED display screen.
Disclosure of Invention
In view of the above, the present invention provides a display control method, a control circuit, a chip and an electronic device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a display control method, applied to a control circuit of an OLED display screen, where the control circuit includes a plurality of registers, and the method includes: acquiring a plurality of sub-pixel output times of a first pixel display point according to display requirements; the first pixel display point is any one pixel display point of the OLED display screen, the first pixel display point comprises a plurality of sub-pixel points, and the output time of the plurality of sub-pixels is controlled in a one-to-one correspondence mode through the plurality of registers. And sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels.
In an optional embodiment, the control circuit further includes a signal selection module, the output ends of the plurality of registers are connected to the input end of the signal selection module, and the plurality of signal output ends of the signal selection module are connected to the plurality of sub-pixel points in a one-to-one correspondence manner. The obtaining of the output time of the plurality of sub-pixels of the first pixel display point according to the display requirement includes: controlling a first register to generate a first sub-pixel switching signal according to the display requirement; the first register is any one of the plurality of registers; inputting the first sub-pixel switch signal to the signal selection module to determine a first output time of a first sub-pixel point; the first sub-pixel is any one of the plurality of sub-pixels.
In an alternative embodiment, the signal selection module includes a first signal selection unit and a second signal selection unit; the output end of the first register is connected with the first input end of the first signal selection unit, and the first output end of the first signal selection unit is connected with the second input end of the second signal selection unit. Inputting the first sub-pixel switch signal to the signal selection module to determine a first output time of a first sub-pixel, comprising: the first signal selection unit determines a signal output sequence matched with the display requirement; wherein the signal output sequence includes a time when the first sub-pixel switching signal is output from the first signal selection unit within a first output period; the first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen; and when the second signal selection unit receives the first sub-pixel switching signal, the first sub-pixel switching signal is sent to the to-be-sent sub-pixel point matched with the current time according to the signal output sequence.
In an optional embodiment, the first pixel display point further includes a second sub-pixel point, the first sub-pixel point is connected to the first signal output end of the second signal selection unit, and the second sub-pixel point is connected to the second signal output end of the second signal selection unit. When the second signal selection unit receives the first sub-pixel switch signal, the first sub-pixel switch signal is sent to the to-be-sent sub-pixel point matched with the current time according to the signal output sequence, and the method comprises the following steps: judging whether the display time of the first sub-pixel point is matched with the current time; if the first sub-pixel switch signal is matched with the first sub-pixel switch signal, the first sub-pixel switch signal is sent to the first sub-pixel point through the first signal output end; if not, judging whether the display time of the second sub-pixel point is matched with the current time; and if the first sub-pixel switch signal is matched with the second sub-pixel switch signal, the first sub-pixel switch signal is sent to the second sub-pixel through the second signal output end.
In an optional embodiment, the plurality of sub-pixel points further include a third sub-pixel point, the third sub-pixel point is connected to a third signal output end of the second signal selection unit, and the third sub-pixel point is further connected to a pixel point power supply circuit of the OLED display screen. Sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels, comprising: acquiring a third sub-pixel switching signal matched with the current time in the plurality of sub-pixel output times; the third sub-pixel switch signal is an output switch signal of a third sub-pixel point in the first pixel display point; and sending the third sub-pixel switching signal to the third sub-pixel point, so that when the third sub-pixel point receives the third sub-pixel switching signal, the voltage of the pixel point power supply circuit is used for realizing light emission.
In a second aspect, the present invention provides a control circuit for an OLED display, where the control circuit includes a plurality of registers and a signal selection module. The output ends of the registers are connected with the input end of the signal selection module, and the signal output ends of the signal selection module are correspondingly connected with the sub-pixel points in the first pixel display point one by one; the first pixel display point is any one pixel display point of the OLED display screen. The registers are used for generating a plurality of sub-pixel switch signals according to display requirements; the signal selection module is used for determining a plurality of sub-pixel output time according to the plurality of sub-pixel switching signals so as to electrify the plurality of sub-pixel points according to the sub-pixel output time.
In an alternative embodiment, the signal selection module includes a first signal selection unit and a second signal selection unit; the output ends of the plurality of registers are connected with the input end of the first signal selection unit, and the first output end of the first signal selection unit is connected with the second input end of the second signal selection unit. The first signal selection unit is used for determining a signal output sequence matched with the display requirement; wherein the signal output sequence includes a time when the plurality of sub-pixel switching signals are output from the first signal selection unit within a first output period; the first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen; and the second signal selection unit is used for sending the sub-pixel switch signals matched with the current time to the to-be-sent sub-pixel points according to the signal output sequence when receiving the plurality of sub-pixel switch signals.
In an optional embodiment, the plurality of sub-pixel points include a first sub-pixel point and a second sub-pixel point, the first sub-pixel point is connected to the first signal output end of the second signal selection unit, and the second sub-pixel point is connected to the second signal output end of the second signal selection unit. The second signal selection unit is further used for judging whether the display time of the first sub-pixel is matched with the current time; the second signal selection unit is further configured to send a first sub-pixel switching signal to the first sub-pixel through the first signal output end if the display time of the first sub-pixel is matched with the current time; the first sub-pixel switching signal is a sub-pixel switching signal generated by any one of the plurality of registers; the second signal selection unit is further configured to determine whether the display time of the second sub-pixel is matched with the current time if the display time of the first sub-pixel is not matched with the current time; the second signal selection unit is further configured to send the first sub-pixel switching signal to the second sub-pixel through the second signal output end if the display time of the second sub-pixel is matched with the current time.
In a third aspect, the present invention provides a chip comprising the control circuit of any one of the preceding embodiments.
In a fourth aspect, the present invention provides an electronic device, including the chip described in the foregoing embodiments.
Compared with the prior art, the invention provides a display control method, a control circuit, a chip and electronic equipment, which are applied to the field of OLED display control. The display control method is applied to a control circuit of an OLED display screen, the control circuit comprises a plurality of registers, and the method comprises the following steps: acquiring a plurality of sub-pixel output times of a first pixel display point according to display requirements; the first pixel display point is any one pixel display point of the OLED display screen, the first pixel display point comprises a plurality of sub-pixel points, and the output time of the plurality of sub-pixels is controlled in a one-to-one correspondence mode through the plurality of registers. And sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels. By arranging the plurality of registers, the output time of each sub-pixel point is independently adjustable, the display effect of the OLED display screen can be accurately controlled, and meanwhile, the power consumption of the OLED display screen is reduced.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a driving circuit of an AMOLED display screen;
FIG. 2 is a schematic diagram of the output time of a sub-pixel of an OLED display screen;
FIG. 3 is a schematic diagram of a control circuit according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a display control method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another control circuit according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating another display control method according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another control circuit according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating another display control method according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another control circuit according to an embodiment of the present invention;
FIG. 10 is a flowchart illustrating another display control method according to an embodiment of the present invention;
fig. 11 is a flowchart illustrating another display control method according to an embodiment of the present invention;
fig. 12 is a schematic diagram illustrating a display control method according to an embodiment of the present invention;
FIG. 13 is a schematic view of a prior art face layout;
fig. 14 is a schematic trace diagram of a control circuit according to an embodiment of the present invention.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the current display scheme of the OLED display screen, each pixel display point includes a plurality of sub-pixels, such as different sub-pixels of RGB, and when the OLED display screen is controlled to display, the different sub-pixels of RGB are displayed according to the same time to form a color pixel, so as to display a target image. In the OLED display screen, an AMOLED display screen is commonly used, and the AMOLED display screen controls the charging time of each pixel display point to further display a target image.
Referring to fig. 1, fig. 1 is a schematic diagram of a driving circuit of an AMOLED display screen, in which a timing controller (i.e., Timer) obtains a Register and then controls an output time of each sub-pixel point in each Cell unit on the OLED display screen; that is, the AMOLED employs one timing controller to control the charging time of all the sub-pixels in each pixel display point, resulting in that the output time of the sub-pixels under the same pixel display point is the same, and the output time of each sub-pixel cannot be adjusted individually, resulting in a larger power consumption of the AMOLED display screen.
Referring to fig. 1, taking an example that a pixel display point on an OLED display screen includes 6 sub-pixel points, a timing controller (Timer) generates 6 Switch signals (also called Switch signals, SW signals) through "SW 1 cell" to "SW 6 cell", and correspondingly outputs the SW signals to pads of respective lines, where the 6 sub-pixel points are: "R1", "G1", "B1", "R2", "G2", "B2"; "SW 1 pad" is connected with "R1", "SW 2 pad" is connected with "G1", "SW 3 pad" is connected with "B1", "SW 4 pad" is connected with "R2", "SW 5 pad" is connected with "G2", "SW 6 pad" is connected with "B2".
On the basis of fig. 1, please refer to fig. 2 for understanding the output time of each sub-pixel, and fig. 2 is a schematic diagram of the output time of the sub-pixel of the OLED display. "R1", "G1", "B1", "R2", "G2" and "B2" are all connected to "Source pad" for supplying power to "R1", "G1", "B1", "R2", "G2" and "B2", and "SW 1 pad" to "SW 6 pad" are used to transmit the switch signal (i.e., SW signal) output by the driving circuit to the corresponding sub-pixel. For example, a waiting time (t) elapses in one Display Line (Display Line 1) of a synchronous timing Line Synchronization (Hsync)wait) After that, the air conditioner is started to work,the 6 sub-pixel points such as "R1", "G1", "B1", "R2", "G2", "B2" are sequentially output according to the signals transmitted by the corresponding lines "SW 1 pad", "SW 2 pad", "SW 3 pad", "SW 4 pad", "SW 5 pad" and "SW 6 pad", that is, "R1", "G1", "B1", "R2", "G2" and "B2" are all output according to "t1"carry out output, that is," charging time of "R1", "G1", "B1", "R2", "G2", and "B2" are all "t1And further realizing the display of the target image by the OLED display screen.
It should be understood that, the charging time of all the sub-pixels in each pixel display point is controlled by one timing controller, which results in that the output time of a plurality of sub-pixels under the same pixel display point is the same, the output time of each sub-pixel cannot be adjusted independently, the display effect of the OLED display screen cannot be optimized, and the AMOLED display screen is prone to have larger power consumption.
To solve at least the above problems and the disadvantages in the prior art, a control circuit according to an embodiment of the present invention is provided, please refer to fig. 3, and fig. 3 is a schematic diagram of a control circuit according to an embodiment of the present invention. The control circuit shown in fig. 3 includes a plurality of registers (i.e., Timer1, Timer2, Timer3 shown in fig. 3); it should be understood that although fig. 3 shows the control circuit including 3 registers, the control circuit may also have only 1 or 2 registers, and when the OLED display screen has higher display requirements, the control circuit may further include more registers, and the control circuit including 3 registers in fig. 3 should not be construed as limiting the scope of the present invention. And after receiving the 'Register', the control circuit controls the corresponding sub-pixel points to output, wherein the first sub-pixel point, the second sub-pixel point and the third sub-pixel point are all sub-pixel points of any pixel display point on the OLED display screen. For example, the Timer1 corresponds to a first sub-pixel, and the first sub-pixel receives a switching signal of the control circuit through a connection line "GOA 1 pad"; the second sub-pixel, the third sub-pixel and the first sub-pixel are similar, and are not repeated here.
Next, on the basis of the control circuit shown in fig. 3, an embodiment of the present invention provides a display control method, which is applied to the control circuit of the OLED display screen shown above, please refer to fig. 4, and fig. 4 is a flowchart illustrating a display control method provided in an embodiment of the present invention. The display control method includes:
and S31, acquiring a plurality of sub-pixel output time of the first pixel display point according to the display requirement.
The first pixel display point is any one of the pixel display points of the OLED display screen, the first pixel display point comprises a plurality of sub-pixel points, and the output time of the plurality of sub-pixels is controlled through the one-to-one correspondence of the plurality of registers.
And S32, sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels.
It can be understood that, with the display control method provided in the embodiment of the present invention, the output time of each sub-pixel point in the first pixel display point can be controlled by the plurality of registers in a one-to-one correspondence manner, so as to achieve a better display of the first pixel display point, and improve the display effect of the OLED display screen. By arranging the plurality of registers, the output time of each sub-pixel point is independently controlled by one register, the display effect of the OLED display screen can be accurately controlled, and meanwhile, the power consumption of the OLED display screen is reduced.
To determine the output time of each sub-pixel, a possible implementation is given on the basis of fig. 3, please refer to fig. 5, and fig. 5 is a schematic diagram of another control circuit according to an embodiment of the present invention. The control circuit further comprises a signal selection module, wherein the output ends of the registers are connected with the input end of the signal selection module, and the signal output ends of the signal selection module are connected with the sub-pixel points in a one-to-one correspondence mode.
The control circuit comprises 6 registers, namely Timer 1-Timer 6; it should be understood that the signal selection module may be a plurality of signal selector (MUX) units, and the MUX group may be composed of a plurality of registers. It should be noted that although fig. 5 illustrates the control circuit including 6 registers, it may also have fewer or more registers to control fewer or more sub-pixels, and should not be construed as limiting the scope of the present invention.
As can be understood, the control circuit is applied to the OLED display screen and comprises a plurality of registers and a signal selection module. The output ends of the registers are connected with the input end of the signal selection module, and the signal output ends of the signal selection module are connected with the sub-pixel points in the first pixel display point in a one-to-one correspondence mode. The first pixel display point is any one pixel display point of the OLED display screen.
The plurality of registers are used for generating a plurality of sub-pixel switching signals according to display requirements. For example, the first subpixel switching signal is generated through a first register (Timer 1).
The signal selection module is used for determining the output time of the plurality of sub-pixels according to the plurality of sub-pixel switching signals so as to electrify the plurality of sub-pixel points according to the output time of the sub-pixels. For example, when the signal selection module selects the first sub-pixel switch signal to be output to the connection line of "GOA 1 pad", the sub-pixel connected to "GOA 1 pad" receives the first sub-pixel switch signal and outputs the first sub-pixel switch signal.
Taking the control circuit shown in fig. 5 as an example, in order to obtain the output time of the sub-pixel, a possible implementation manner is provided on the basis of fig. 4, please refer to fig. 6, and fig. 6 is a schematic flow chart of another display control method according to an embodiment of the present invention. The above S31 may include:
s311, the first register is controlled to generate a first sub-pixel switch signal according to the display requirement.
The first register is any one of a plurality of registers. For example, Timer1 is used as the first register, Timer2 is used as the second register, Timer3 is used as the third register, Timer4 is used as the fourth register, Timer5 is used as the fifth register, and Timer6 is used as the sixth register.
S312, the first sub-pixel switch signal is input to the signal selection module to determine a first output time of the first sub-pixel.
The first sub-pixel point is any one of a plurality of sub-pixel points; for example, the other end of the "GOA 1 pad" connection line is the first sub-pixel.
It can be understood that one register controls the output time of one sub-pixel point, so that the output time of each sub-pixel point is independently adjustable, and the display effect of the OLED display screen is improved.
For example, please continue to refer to fig. 5, in order to make the OLED display have more display effects, the output sequence of the multi-way switch signals may be determined by the signal selection module, where the multi-way switch signals include switch signals generated by SW1 to SW6, i.e., Timer1 to Timer 6; the signal selection module can adjust the output sequence of the SW 1-SW 6 so as to adjust the output time of the plurality of sub-pixel points, so that the OLED display screen has more display effects.
In an alternative embodiment, in order to determine an output order of the plurality of sub-pixel switch signals and an output port of each sub-pixel switch signal, on the basis of fig. 5, taking an example that the signal selection module includes a first signal selection unit and a second signal selection unit, please refer to fig. 7, and fig. 7 is a schematic diagram of another control circuit provided in the embodiment of the present invention. An Output end of the first register (Timer1) is connected to a first Input end (Input 1) of the first signal selection unit (i.e., the first MUX group), and a first Output end (Output a) of the first signal selection unit is connected to a second Input end (Input 2) of the second signal selection unit (i.e., the second MUX group).
The first signal selection unit (i.e., the first MUX group) is used to determine the signal output order matching the display requirement. The signal output sequence includes the time when the plurality of sub-pixel switch signals are output from the first signal selection unit (i.e., the first MUX group) in the first output period. The first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen. For example, the first output period may be 2 seconds, 3 seconds, etc., and the output time of each sub-pixel may be several microseconds.
The second signal selection unit (i.e. the second MUX group) is configured to send the sub-pixel switch signal matched with the current time to the to-be-sent sub-pixel point according to the signal output sequence when receiving the plurality of sub-pixel switch signals.
It should be understood that the first signal selection unit (i.e., the first MUX group) and the second signal selection unit (i.e., the second MUX group) may each include a plurality of sub-MUX groups, and each sub-MUX group may include at least one register therein, so as to implement selection of sub-pixel switching signals. It should be noted that fig. 7 only uses the first register (Timer1) as an example, and a connection relationship thereof is briefly described, and connection relationships between other registers and the first register (Timer1) and the first signal selection unit and the second signal selection unit are similar, but each register is connected to a different port, and details are not repeated here.
Taking the control circuit shown in fig. 7 as an example, in order to determine the output order of the plurality of sub-pixel switching signals and the output port of each sub-pixel switching signal, a possible implementation manner is provided on the basis of fig. 6, please refer to fig. 8, and fig. 8 is a flowchart of another display control method provided in the embodiment of the present invention. The above S312 may include:
s312a, the first signal selection unit determines a signal output order matching the display requirement.
Wherein the signal output sequence includes a time when the first sub-pixel switching signal is output from the first signal selection unit in the first output period; the first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen. For example, the display time window is the display time of all the sub-pixels in the first pixel display point emitting light in one display line, such as 2 seconds, and the single light emitting time of each sub-pixel may be several microseconds, such as 2 microseconds.
S312b, when the second signal selecting unit receives the first sub-pixel switching signal, the first sub-pixel switching signal is sent to the to-be-sent sub-pixel point matched with the current time according to the signal output sequence.
It can be understood that, in a display time window (first output period), the second signal selection unit may output the first sub-pixel switching signal to the to-be-emitted sub-pixel corresponding to the display requirement, where the to-be-emitted sub-pixel may be a different sub-pixel such as the first sub-pixel, the second sub-pixel, and the like, and is specifically related to the display requirement of the current time.
To facilitate understanding of the process of determining the to-be-emitted sub pixel point by the second signal selection unit, on the basis of fig. 7, taking the example that the first pixel display point further includes the second sub pixel point, please refer to fig. 9, and fig. 9 is a schematic diagram of another control circuit provided in the embodiment of the present invention. The plurality of sub-pixel points comprise a first sub-pixel point and a second sub-pixel point, the first sub-pixel point is connected with a first signal output end of the second signal selection unit, and the second sub-pixel point is connected with a second signal output end of the second signal selection unit.
For example, two ends of "GOA 1 pad" are connected to the first signal Output end (Output 1) of the first sub-pixel and the second signal selection unit, two ends of "GOA 2 pad" are connected to the second signal Output end (Output 2) of the second sub-pixel and the second signal selection unit, two ends of "GOA 3 pad" are connected to the third signal Output end (Output3) of the third sub-pixel and the second signal selection unit, two ends of "GOA 4 pad" are connected to the fourth signal Output end (Output 4) of the fourth sub-pixel and the second signal selection unit, two ends of "GOA 5 pad" are connected to the fifth signal Output end (Output 5) of the fifth sub-pixel and the second signal selection unit, and two ends of "GOA 6 pad" are connected to the sixth signal Output end (Output 6) of the sixth sub-pixel and the second signal selection unit, respectively.
In order to determine the output position of the second signal selection unit for outputting the sub-pixel switching signal, the following takes the control circuit shown in fig. 9 as an example, and a possible implementation manner is provided on the basis of fig. 8, please refer to fig. 10, and fig. 10 is a flowchart of another display control method provided in the embodiment of the present invention. The above S312b may include:
s312b1, determine whether the display time of the first sub-pixel matches the current time.
It is understood that the display time of the first sub-pixel point may be an output time in the first output period. If so, go to S312b 2; if not, S312b3 is executed.
S312b2, sending the first sub-pixel switch signal to the first sub-pixel through the first signal output terminal.
It should be understood that when the first sub-pixel receives the first sub-pixel switching signal, the first sub-pixel is combined with the power supply line of the first sub-pixel to emit light.
S312b3, determine whether the display time of the second sub-pixel matches the current time.
It is understood that the display time of the first sub-pixel point may be an output time in the first output period. If so, go to S312b 4; if not, S312b5 is executed.
S312b4, sending the first sub-pixel switch signal to the second sub-pixel through the second signal output terminal.
And S312b5, matching the display time of other sub-pixel points with the current time, and determining the sub-pixel point to be sent.
It is understood that the second signal selecting unit may implement the above-described S312b 1-S312 b5 and possible sub-steps thereof.
The second signal selecting unit (i.e., the second MUX group) may further adjust an output port of the sub-pixel switching signal generated by the plurality of registers according to a sub-pixel selection requirement (MUX Select Register) of a user, for example, if the other end of the "GOA 1 pad" connection line is a first sub-pixel, the other end of the "GOA 2 pad" connection line is a second sub-pixel, and the first sub-pixel switching signal is generated by the first Register (Timer1), the second signal selecting unit (i.e., the second MUX group) may output the first sub-pixel switching signal generated by the first Register (Timer1) to the "GOA 2 pad" after receiving the MUX Select Register, so that the second sub-pixel outputs light when receiving the first sub-pixel switching signal through the "GOA 2 pad" connection line.
With continued reference to the control circuit shown in fig. 9, in order to implement Output time control of the sub-pixels, on the basis of fig. 8, taking an example that the plurality of sub-pixels further include a third sub-pixel, the third sub-pixel is connected to a third signal Output end of the second signal selection unit, and the third sub-pixel is further connected to a pixel power supply circuit of the OLED display, for example, two ends of "GOA 3 pad" are respectively connected to the third sub-pixel and the third signal Output end (Output 3); referring to fig. 11, fig. 11 is a schematic flowchart illustrating another display control method according to an embodiment of the present invention. The above S32 may include:
s321, obtaining a third sub-pixel switch signal matched with the current time in the plurality of sub-pixel output times.
The third sub-pixel switch signal is an output switch signal of a third sub-pixel point in the first pixel display point.
And S322, sending the third sub-pixel switching signal to the third sub-pixel point, so that when the third sub-pixel point receives the third sub-pixel switching signal, the voltage of the pixel point power supply circuit is used for realizing light emission.
For example, please refer to fig. 9, both ends of "GOA 3 pad" are respectively connected to the third sub-pixel and the third signal Output terminal (Output3), and the voltage provided by the pixel power supply circuit is also needed while the third sub-pixel receives the third sub-pixel switching signal, so as to achieve light emitting Output.
To facilitate understanding of the above-mentioned pixel power supply circuit, a possible implementation manner is provided on the basis of fig. 9, please refer to fig. 12, and fig. 12 is a schematic diagram of a display control method according to an embodiment of the present invention. The first sub-pixel point, the second sub-pixel point, the third sub-pixel point, the fourth sub-pixel point, the fifth sub-pixel point and the sixth sub-pixel point are all connected with a "Source pad", the "Source pad" is used for supplying power to the 6 sub-pixel points, and the "GOA 1 pad" to "GOA 6 pad" are used for transmitting sub-pixel switch signals (namely, SW signals) output by the driving circuit to the corresponding sub-pixel points. For example, a waiting time (T) elapses in one Display Line (Display Line 1) of a synchronous timing Line Synchronization (Hsync)wait) Then, the 6 sub-pixels are sequentially output according to signals transmitted by respective corresponding lines "GOA 1 pad", "GOA 2 pad", "GOA 3 pad", "GOA 4 pad", "GOA 5 pad", and "GOA 6 pad", that is, the first sub-pixel, the second sub-pixel, the third sub-pixel, the fourth sub-pixel, the fifth sub-pixel, and the sixth sub-pixel are respectively output according to "T" respectively1”、“T2”、“T3”、“T4”、“T5”、“T6And sequentially carrying out light emitting output to realize the display of the target image by the OLED display screen.
It should be understood that the display control shown in fig. 12 is only one possible embodiment provided by the present invention, and there may be more or less lines to implement the display control method provided by the present invention when possible. It is foreseeable that, for different display panels, due to the difference of the luminescent materials, the control of the output time of different sub-pixel points can be further realized by adjusting the charging time of the luminescent materials.
In the prior art, the SW signal can only be output to the output port fixed by the control circuit, once the physical position of the control circuit is fixed, the output position of the SW signal is also fixed, wiring of the sub-pixel point and the control circuit is limited, and the control circuit cannot be adapted according to the panel layout provided by different manufacturers. Referring to fig. 13, fig. 13 is a schematic diagram of a face layout according to a conventional scheme. Because switch signals need to be corresponded, GOA 1-GOA 3 are corresponded respectively, and SW 1-SW 3 are corresponded respectively, and the problem of wiring intersection exists between the first circuit and the second circuit, which easily causes a short circuit problem.
By using the display control method provided by the application, the second signal selection unit can adjust the output port of the SW signal, and the MUX Select Register can be configured into different output ports through software, so that for panels provided by different manufacturers, the signal output port of the SW signal only needs to be configured through the MUX Select Register, the risk of routing short circuit caused by the fixation of the signal output port on the control circuit is avoided, and the purpose of being compatible with the layout of multiple panels is achieved. Referring to fig. 14, fig. 14 is a schematic routing diagram of a control circuit according to an embodiment of the present invention. The output signals of the SW signals are distributed through the second signal selection unit, so that the GOA 1-GOA 3 correspond to each other, and the GOA 4-GOA 6 correspond to the SW 1-SW 3, and the effect of being compatible with multiple faces is achieved.
In addition, the invention also provides a chip, which comprises the control circuit in the embodiment. The chip has signal Processing capability, and may be, but is not limited to, a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The chip can be applied to electronic equipment needing displaying, such as mobile phones, tablet computers, notebook computers, servers, intelligent wearable equipment, intelligent household appliances and the like, and can also be applied to routers, network switching equipment and the like with a displaying function.
The invention also provides electronic equipment which comprises the chip in the embodiment. The electronic device may be, but is not limited to, a Mobile phone, a tablet Computer, a wearable device, an in-vehicle device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and other electronic devices, and the embodiment of the present application does not set any limitation to specific types of the electronic device. Wearable devices may include, but are not limited to, smart watches, smart bracelets, smart glasses, and the like.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In summary, the present invention provides a display control method, a control circuit, a chip and an electronic device, which are applied to the field of OLED display control. The display control method is applied to a control circuit of an OLED display screen, the control circuit comprises a plurality of registers, and the method comprises the following steps: acquiring a plurality of sub-pixel output times of a first pixel display point according to display requirements; the first pixel display point is any one pixel display point of the OLED display screen, the first pixel display point comprises a plurality of sub-pixel points, and the output time of the plurality of sub-pixels is controlled in a one-to-one correspondence mode through the plurality of registers. And sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels. By arranging the plurality of registers, the output time of each sub-pixel point is independently adjustable, the display effect of the OLED display screen can be accurately controlled, and meanwhile, the power consumption of the OLED display screen is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A display control method is characterized in that the method is applied to a control circuit of an Organic Light Emitting Diode (OLED) display screen, the control circuit comprises a plurality of registers and a signal selection module, the signal selection module comprises a first signal selection unit and a second signal selection unit, the output end of the first register is connected with the first input end of the first signal selection unit, the first output end of the first signal selection unit is connected with the second input end of the second signal selection unit, and the method comprises the following steps:
controlling a first register to generate a first sub-pixel switching signal according to a display requirement;
wherein the first register is any one of the plurality of registers;
the first signal selection unit determines a signal output sequence matched with the display requirement;
wherein the signal output sequence includes a time when the first sub-pixel switching signal is output from the first signal selection unit within a first output period; the first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen;
when the second signal selection unit receives the first sub-pixel switch signal, the first sub-pixel switch signal is sent to a to-be-emitted sub-pixel point matched with the current time according to the signal output sequence;
and sequentially electrifying each sub-pixel point.
2. The method of claim 1, wherein the first pixel display point further comprises a second subpixel point, the first subpixel point being connected to the first signal output terminal of the second signal selection unit, the second subpixel point being connected to the second signal output terminal of the second signal selection unit;
when the second signal selection unit receives the first sub-pixel switch signal, the first sub-pixel switch signal is sent to the to-be-sent sub-pixel point matched with the current time according to the signal output sequence, and the method comprises the following steps:
judging whether the display time of the first sub-pixel point is matched with the current time;
if the first sub-pixel switch signal is matched with the first sub-pixel switch signal, the first sub-pixel switch signal is sent to the first sub-pixel point through the first signal output end;
if not, judging whether the display time of the second sub-pixel point is matched with the current time;
and if the first sub-pixel switch signal is matched with the second sub-pixel switch signal, the first sub-pixel switch signal is sent to the second sub-pixel through the second signal output end.
3. The method according to claim 1 or 2, wherein the plurality of sub-pixel points further include a third sub-pixel point, the third sub-pixel point is connected to a third signal output terminal of the second signal selection unit, and the third sub-pixel point is further connected to a pixel point power supply circuit of the OLED display screen;
sequentially electrifying each sub-pixel point in the first pixel display point according to the output time of the plurality of sub-pixels, comprising:
acquiring a third sub-pixel switching signal matched with the current time in the plurality of sub-pixel output times; the third sub-pixel switch signal is an output switch signal of a third sub-pixel point in the first pixel display point;
and sending the third sub-pixel switching signal to the third sub-pixel point, so that when the third sub-pixel point receives the third sub-pixel switching signal, the voltage of the pixel point power supply circuit is used for realizing light emission.
4. The control circuit is applied to an OLED display screen and comprises a plurality of registers and a signal selection module, wherein the signal selection module comprises a first signal selection unit and a second signal selection unit;
the output ends of the plurality of registers are connected with the input end of the first signal selection unit, and the first output end of the first signal selection unit is connected with the second input end of the second signal selection unit
A plurality of second output ends of the second signal selection unit are correspondingly connected with a plurality of sub-pixel points in the first pixel display point one by one; the first pixel display point is any one pixel display point of the OLED display screen;
the registers are used for generating a plurality of sub-pixel switch signals according to display requirements;
the first signal selection unit is used for determining a signal output sequence matched with the display requirement;
wherein the signal output sequence includes a time when the plurality of sub-pixel switching signals are output from the first signal selection unit within a first output period; the first output period is a display time window for playing the target image corresponding to the display requirement by the OLED display screen;
and the second signal selection unit is used for sending the sub-pixel switch signals matched with the current time to the to-be-sent sub-pixel points according to the signal output sequence when the plurality of sub-pixel switch signals are received, so that the plurality of sub-pixel points are electrified according to the sub-pixel output time.
5. The control circuit of claim 4, wherein the plurality of sub-pixels includes a first sub-pixel and a second sub-pixel, the first sub-pixel is connected to the first signal output terminal of the second signal selection unit, and the second sub-pixel is connected to the second signal output terminal of the second signal selection unit;
the second signal selection unit is further used for judging whether the display time of the first sub-pixel is matched with the current time;
the second signal selection unit is further configured to send a first sub-pixel switching signal to the first sub-pixel through the first signal output end if the display time of the first sub-pixel is matched with the current time; the first sub-pixel switching signal is a sub-pixel switching signal generated by any one of the plurality of registers;
the second signal selection unit is further configured to determine whether the display time of the second sub-pixel is matched with the current time if the display time of the first sub-pixel is not matched with the current time;
the second signal selection unit is further configured to send the first sub-pixel switching signal to the second sub-pixel through the second signal output end if the display time of the second sub-pixel is matched with the current time.
6. A chip comprising the control circuit of any one of claims 4-5.
7. An electronic device comprising the chip of claim 6.
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CN1848226A (en) * 2005-04-11 2006-10-18 三星电子株式会社 Gate drive device for display device and display device having the same
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