WO2019085489A1 - 一种显示屏、像素驱动方法和显示装置 - Google Patents
一种显示屏、像素驱动方法和显示装置 Download PDFInfo
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- WO2019085489A1 WO2019085489A1 PCT/CN2018/091230 CN2018091230W WO2019085489A1 WO 2019085489 A1 WO2019085489 A1 WO 2019085489A1 CN 2018091230 W CN2018091230 W CN 2018091230W WO 2019085489 A1 WO2019085489 A1 WO 2019085489A1
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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]
-
- 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
- G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
Definitions
- the present application relates to the field of display technologies, and in particular, to a display screen, a pixel driving method, and a display device.
- the organic light emitting display device may include a driver and a plurality of pixels, and each pixel may correspond to one pixel circuit, wherein the driver may generate a driving signal, and the driving signal may be transmitted in a plurality of pixel circuits for each pixel circuit.
- the data is scanned and written so that the light emitting diodes in the pixel circuit emit light, and the entire display device emits light.
- the driving signal when the driving signal is transmitted from one pixel circuit to another, the driving signal will inevitably have a delay due to the resistance of the signal line in the pixel circuit and the capacitance.
- the effective time for scanning the driving signal for each pixel is continuously shortened.
- the driving signal has a delay, the writing of data in the pixel is seriously affected, thereby affecting Normal display of the entire display device.
- the main purpose of the present application is to provide a display screen, a pixel driving method, and a display device, which are intended to solve the problem that in the conventional organic light emitting display device, since the driving signal has a delay, affecting the writing of data in the pixel, the display device cannot be The problem that is displayed normally.
- a display screen provided by the present application includes at least one display unit, the display unit including a first pixel, a second pixel, and a comparator, wherein:
- a first input end of the comparator is connected to a driving signal output end of the first pixel, and a driving signal output end of the first pixel is used to output a first driving signal;
- a second input end of the comparator is connected to a driving signal line, wherein the driving signal line is used to provide a second driving signal, and the second driving signal is a signal in which no delay occurs;
- An output end of the comparator is connected to a driving signal input end of the second pixel
- the comparator is configured to compare the first driving signal with the second driving signal, and output a third driving signal, where the third driving signal is a signal without delay, and the third driving signal is used for Driving the second pixel.
- the comparator outputs the third driving signal as the first driving signal when determining that the first driving signal does not have a delay compared to the second driving signal;
- the comparator outputs the third driving signal as the second driving signal when it is determined that the first driving signal has a delay compared to the second driving signal.
- the comparator determines that the first driving signal does not have a delay when the first driving signal and the second driving signal are detected to be changed at the same time;
- the comparator determines that there is a delay in the first driving signal when the first driving signal and the second driving signal are detected to change at different times.
- the driving signal output end of the first pixel is connected to the driving signal input end of the second pixel, and the first driving signal and the third driving signal jointly drive the second pixel.
- the first driving signal is one of a scan signal, an illumination control signal, a gate signal, and a clock signal;
- the second drive signal is the same as the first drive signal.
- the number of the comparators included in the display unit is at least one, and each of the comparators is configured to output different third driving signals to the second pixels.
- the display unit includes three of the comparators, the first pixel includes three driving signal output ends, and the three driving signal output ends are respectively connected to the first input of the three comparators.
- the second input ends of the three comparators are respectively connected to three driving signal lines, and the output ends of the three comparators are respectively connected to the three driving signal input ends of the second pixel.
- the first pixel and the second pixel are two adjacent pixels in the same row in the display screen.
- a plurality of the display units are arranged in the display screen in columns and/or rows;
- each of the two display units includes at least one pixel.
- the embodiment of the present application further provides a driving method for a pixel in the display screen as described above, including:
- the comparator compares the first driving signal outputted by the first pixel with the second driving signal input to the comparator to determine whether the first driving signal has a delay, and the second driving signal is that no delay occurs. signal;
- the comparator inputs the first driving signal to the second pixel when determining that the first driving signal does not delay
- the comparator inputs the second driving signal to the second pixel when determining that the first driving signal is delayed.
- the comparator determines that the first driving signal does not delay when the first driving signal and the second driving signal are detected to be changed at the same time;
- the comparator determines that the first driving signal is delayed when the first driving signal and the second driving signal are changed at different times.
- the first driving signal is one of a scan signal, an illumination control signal, a gate signal, and a clock signal;
- the second drive signal is the same as the first drive signal.
- the number of the comparators is at least one, and each of the comparators outputs a different delay-free signal to the second pixel.
- the embodiment of the present application further provides a display device, including the display screen described above.
- the display screen provided by the embodiment of the present application includes at least one display unit, the display unit includes a first pixel, a second pixel, and a comparator, wherein: the first input end of the comparator and the first pixel a driving signal output end is connected, a driving signal output end of the first pixel is used to output a first driving signal; a second input end of the comparator is connected to a driving signal line, and the driving signal line is used to provide a second driving a signal, the second driving signal is a signal without delay; an output of the comparator is coupled to a driving signal input end of the second pixel; and the comparator is configured to transmit the first driving signal The second driving signal is compared and outputs a third driving signal, the third driving signal is a signal in which no delay occurs, and the third driving signal is used to drive the second pixel.
- a comparator is added between two pixels of the display screen, and the comparator can compare the driving signal outputted by one of the pixels with the driving signal without delay and output the undelayed signal to another pixel, Driving the pixel, since the signal driving the pixel is an undelayed signal, the normal writing of the data in the pixel is not affected, and the normal display of the pixel is ensured, thereby ensuring the normal display of the display device.
- FIG. 1 is a schematic structural diagram of a display screen according to an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of another display screen according to an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of still another display screen according to an embodiment of the present disclosure.
- FIG. 4 is a schematic structural diagram of still another display screen according to an embodiment of the present application.
- FIG. 5 is a schematic flowchart diagram of a pixel driving method according to an embodiment of the present application.
- the display provided by the embodiment of the present application adds a comparator between two pixels, and the comparator can output the driving signal of one of the pixels without delay.
- the drive signals are compared and output an undelayed signal that can be input to another pixel and drive the pixel. In this way, since the signal for driving the pixel is an undelayed signal, it is ensured that the data is normally written into the pixel, thereby ensuring normal display of the pixel and normal display of the display device.
- the first driving signal may be one of a scan signal, an illumination control signal, a gate signal, and a clock signal in the first pixel, and the second driving signal may be The first driving signal is the same and the delay is not generated.
- the first driving signal is a lighting control signal
- the second driving signal is the corresponding lighting control signal that does not have a delay. If the number of the scanning signals, the number of the gate signals, or the number of the clock signals is multiple, the first driving signal may be one of the plurality of signals, and the embodiment does not do this.
- the specific circuit structure of the first pixel and the second pixel is not limited in the embodiment of the present application.
- the display screen provided by the embodiment of the present application may include at least one display unit, where the display unit may include a first pixel, a second pixel, and a comparator, and the number of the comparators may be one or more Each of the comparators can be used to compare a drive signal and output a corresponding undelayed signal.
- the specific number of the comparators may be determined according to the number of driving signals of the pixels in the display screen, which is not specifically limited in this embodiment.
- the number of the comparators may be three, wherein the first comparator may be used to compare the driving signal S1 with the corresponding one.
- the delayed drive signals are compared and output an undelayed signal, and the second comparator can be used to compare the drive signal S2 with its corresponding undelayed drive signal and output an undelayed signal, a third comparison
- the device can be used to compare the drive signal S3 with its corresponding undelayed drive signal and output an undelayed signal.
- the driving signal of the pixel is generally transmitted from left to right in the display screen, and therefore,
- the first pixel and the second pixel may be pixels located in the same row.
- the driving signal in the pixel is transmitted from top to bottom in the display screen
- the first pixel and the second pixel may also be pixels in the same column.
- the driving signal is transmitted from left to right in the display screen as an example for description.
- the first pixel and the second pixel may be two adjacent pixels.
- FIG. 1 is a schematic structural diagram of a display screen according to an embodiment of the present application.
- the display panel shown in FIG. 1 may include at least one display unit A (only one display unit is shown in FIG. 1 ).
- the embodiment of the present application is described by taking one of the display units A as an example.
- the display unit A may include a first pixel 11, a second pixel 12, and a comparator 13, wherein:
- the first pixel 11 may include a driving signal output end, and the driving signal output end may be used to output the first driving signal G1, wherein the first driving signal G1 may be the upper level pixel of the first pixel 11 (for example, with the first A drive signal output from the first pixel 11 after the drive signal output from the pixel adjacent to the pixel 11 is driven by the first pixel 11.
- the first driving signal G1 may have a delay.
- the second pixel 12 may include a driving signal input terminal through which a driving signal may be input to the second pixel 12 to drive the second pixel 12.
- the comparator 13 can include a first input, a second input, and an output, wherein:
- the first input end may be connected to the driving signal output end of the first pixel 11, such that the first driving signal G1 may be input to the comparator 13;
- the second input terminal may be connected to a driving signal line, the driving signal line may be used to provide a second driving signal G2, and the second driving signal G2 may be a signal without delay.
- the driving signal line may be a signal line connected to the driver, and the second driving signal G2 provided by the driving signal line may not participate in driving the pixels in the display screen, such that The second driving signal G2 can be regarded as a signal in which no delay occurs, wherein the driver can be used to provide a driving signal for pixels in the display screen;
- the output terminal may be coupled to the drive signal input of the second pixel 12, wherein the output may output a signal to the second pixel 12.
- the comparator 13 may compare the first driving signal G1 with the second driving signal G2, determine whether the first driving signal G1 has a delay, and output the undelayed output by the output according to the comparison result.
- the comparator 13 determines whether the first driving signal G1 has a delay, in particular, since the driving signal of the pixel is usually a square wave signal, the square wave signal can be changed between a high level and a low level, and therefore, the comparator 13 can detect whether the level change of the first driving signal G1 is consistent with the level change of the second driving signal G2. If they match, the first driving signal G1 and the second driving signal G2 can be synchronously changed.
- the first driving signal G1 There is no delay; if it is inconsistent, it can be explained that the change of the first driving signal G1 is not synchronized with the change of the second driving signal G2, and the first driving signal G1 has a delay.
- the first driving signal G1 may be output by the output terminal. At this time, the first driving signal G1 may be regarded as the third driving.
- the third driving signal G3 output by the comparator 13 is an undelayed signal.
- the third driving signal G3 can be input to the second pixel 12 and drive the second pixel 12, so that since the third driving signal G3 is The signal is not delayed, therefore, it can be ensured that the data is normally written into the second pixel 12, and the normal display of the second pixel 12 is ensured.
- the driving signal output end of the first pixel 11 in the display unit may not be connected to the driving signal input end of the second pixel 12, that is, the first driving signal G1 is not used.
- the second pixel 12 is input and driven, so that the second driving signal G3 is replaced by the first driving signal G1 in the prior art, and the third driving signal G3 is not delayed.
- the first driving signal G1 having a delay drives the second pixel 12 to ensure that data is normally written to the pixel circuit 12.
- the display screen provided by the embodiment of the present application includes at least one display unit, the display unit includes a first pixel, a second pixel, and a comparator, wherein: the first input end of the comparator and the driving of the first pixel a signal output end is connected, a driving signal output end of the first pixel is used to output a first driving signal; a second input end of the comparator is connected to a driving signal line, and the driving signal line is used to provide a second driving signal
- the second driving signal is a signal that does not have a delay; an output end of the comparator is connected to a driving signal input end of the second pixel; the comparator is configured to use the first driving signal and the The second driving signal is compared and outputs a third driving signal, which is a signal in which no delay occurs, and the third driving signal is used to drive the second pixel.
- the comparator can compare the driving signal outputted by one of the pixels with the driving signal without delay and output the undelayed signal to another pixel and drive The pixel, in this way, since the signal driving the pixel is an undelayed signal, it does not affect the normal writing of data in the pixel, thereby ensuring normal display of the display device.
- FIG. 2 is a schematic structural diagram of another display screen according to an embodiment of the present disclosure.
- At least one display unit B may be included in the display screen shown in FIG. 2, and for one of the display units B, the first pixel 21, the second pixel 22, and the comparator 23 may be included.
- the function implemented by the comparator 23 in FIG. 2 is the same as that implemented by the comparator 13 in FIG. 1, and the description will not be repeated here.
- the third driving signal G3 is also the same as the third driving signal G3 shown in FIG. The description will not be repeated.
- the display unit B shown in FIG. 2 is different from the display unit A shown in FIG. 1 in that the driving signal output end of the first pixel 21 in FIG. 2 is connected to the driving signal input end of the second pixel 22, That is, the first driving signal G1 can input and drive the second pixel 22. In this way, after comparing the first driving signal G1 and the second driving signal G2 and outputting the third driving signal G3, the first driving signal G1 and the third driving signal G3 can jointly act on the second pixel 22, and The second pixel 22 is driven in common.
- the third driving signal G3 in which the delay does not occur can ensure the normal driving of the second pixel 22 in the display unit B shown in FIG. 2, it can be ensured that the data is normally written into the second pixel 22, thereby ensuring the second pixel.
- the normal display of 22 Since the third driving signal G3 in which the delay does not occur can ensure the normal driving of the second pixel 22 in the display unit B shown in FIG. 2, it can be ensured that the data is normally written into the second pixel 22, thereby ensuring the second pixel.
- the normal display of 22 Since the third driving signal G3 in which the delay does not occur can ensure the normal driving of the second pixel 22 in the display unit B shown in FIG. 2, it can be ensured that the data is normally written into the second pixel 22, thereby ensuring the second pixel.
- the normal display of 22 Since the third driving signal G3 in which the delay does not occur can ensure the normal driving of the second pixel 22 in the display unit B shown in FIG. 2, it can be ensured that the data is normally written into the second pixel
- the display screen shown in FIG. 2 is compared with the display screen shown in FIG.
- the delayed first driving signal G1 and the undelayed third driving signal G3 jointly drive the second pixel 12, so that the display difference between the first pixel 21 and the second pixel 22 can be made small, thereby causing the display
- the display of the screen is more uniform.
- the driving signal output end of the first pixel may be connected to the driving signal input end of the second pixel, or may not be connected to the driving signal input end of the second pixel, which is not specifically limited herein. .
- the driving signal output end of the first pixel may be connected to the driving signal input end of the second pixel to ensure uniformity of display of the display screen.
- the comparator can compare the driving signal outputted by one of the pixels with the driving signal without delay and output the undelayed The signal is driven to another pixel, and the pixel is driven.
- the signal driving the pixel is an undelayed signal, normal writing of data in the pixel is not affected, thereby ensuring normal display of the display device.
- the first driving signal output by the first pixel may be output to the second pixel, and the second pixel is driven together with the third driving signal, The difference in display between the first pixel and the second pixel can be reduced to ensure uniformity of display by the display device.
- FIG. 3 is a schematic structural diagram of still another display screen according to an embodiment of the present application.
- the display screen may include at least one display unit C.
- the display unit C may include a first pixel 31, a second pixel 32, a comparator 33, a comparator 34, and a comparator. 35, of which:
- the first pixel 31 may include three driving signal output ends for respectively outputting three driving signals: a driving signal S1, a driving signal S2, and a driving signal S3, wherein the driving signals S1, S2, and S3 may have a delay.
- the second pixel 32 is a pixel in the same row adjacent to the first pixel 31, and the second pixel 32 can include three driving signal input terminals through which three different driving signals can be input, three A different drive signal can be used to drive the second pixel 32.
- the three driving signal output ends of the first pixel 31 may not be connected to the three driving signal input ends of the second pixel 32, that is, the driving signal S1, the driving signal S2, and the driving signal S3 are not used for input.
- the second pixel 32 is driven.
- the comparator 33 can include a first input, a second input, and an output.
- the first input end may be connected to one of the driving signal output ends of the first pixel 31, so that the driving signal S1 outputted by the first pixel 31 is input to the comparator 33; the second input end may be coupled to the first driving signal
- the line connection, the first driving signal line may be used to provide a driving signal S11, and the driving signal S11 may be a signal without delay; the output terminal may be connected to a driving signal input end of the second pixel 32.
- Comparator 34 can include a first input, a second input, and an output.
- the first input end may be connected to another driving signal output end of the first pixel 31, so that the driving signal S2 outputted by the first pixel 31 is input to the comparator 34;
- the second input end and the second driving signal line may be In connection, the second driving signal line may be used to provide a driving signal S22, and the driving signal S22 may be a signal in which no delay occurs; the output terminal may be connected to another driving signal input end of the second pixel 32.
- the comparator 35 can include a first input, a second input, and an output.
- the first input end may be connected to the last driving signal output end of the first pixel 31, so that the driving signal S3 outputted by the first pixel 31 is input to the comparator 35;
- the second input end may be connected to the third driving signal line.
- the third driving signal line may be used to provide a driving signal S33, and the driving signal S33 may be a signal without delay; the output terminal may be connected to the last driving signal input end of the second pixel 32.
- the driving signal S1 is the same signal as the undelayed driving signal S11.
- the driving signal S1 is an illumination control signal in the pixel, and then the driving signal S11 is an undelayed illumination control corresponding to the driving signal S1. signal.
- the driving signal S2 is the same signal as the undelayed driving signal S22, and the driving signal S3 and the undelayed driving signal S33 are also the same signal.
- the comparator 33 can compare the driving signal S1 with the driving signal S11 by the method described in the embodiment shown in FIG. 1, and output the driving signal S4 without delay, and the driving signal S4 is input to the second. In the pixel 32, the second pixel 32 is driven.
- the comparator 34 can compare the drive signal S2 with the drive signal S22 by the same method, and output the drive signal S5 without delay, the drive signal S5 being input to the second pixel 32, and driving the second pixel 32.
- the comparator 35 can also compare the drive signal S3 with the drive signal S33 by the same method, and output the drive signal S6 without delay, the drive signal S6 being input to the second pixel 32, and driving the second pixel 32.
- the driving signal S4, the driving signal S5, and the driving signal S6 input to the second pixel 32 are all undelayed driving signals, the normal writing of the data in the second pixel 32 can be ensured, thereby ensuring the second The normal display of pixel 32.
- the display provided by the embodiment of the present application may include a plurality of comparators, each of the comparators may compare one driving signal with a corresponding undelayed driving signal, and output an undelayed signal to another pixel. In this way, since the driving signals input to the pixels are all undelayed signals, normal writing of data in the pixels can be ensured, thereby ensuring normal display of the display device.
- one or more comparators described above may be disposed between every two adjacent pixels for a plurality of pixels in each row of the display screen described above, wherein The number of the comparators that are set between the two adjacent pixels may be the same or different, and may be determined according to actual conditions, and is not specifically limited herein.
- the driving signal input to each pixel can be effectively ensured as an undelayed signal, thereby ensuring the normal display of each pixel and the normal display of the entire display.
- the driving signal output end of the pixel on the left side may be connected to the input end of the driving signal of the pixel located on the right side, or may not be connected, which is not specifically limited in the embodiment of the present application.
- FIG. 4 is a schematic structural diagram of still another display screen according to an embodiment of the present application.
- the display screen shown in FIG. 4 may include display units 411 to 41n, display units 421 to 42n, ... display units 4m1 to 4mn, which are arranged in an array in the display screen, wherein FIG. 4
- Each of the display units shown may be the display unit A described in the embodiment shown in FIG. 1, or may be the display unit B described in the embodiment shown in FIG. 2, or may be described in the embodiment shown in FIG.
- the display unit C is not specifically limited herein.
- a plurality of pixels may be included between every two units.
- the nine pixels of the pixels 1a, 1b, ... 1i may be included between the two display units, and the display unit 421 and the display for the second row are displayed.
- the unit 422, the two display units may include 9 pixels of the pixels 2a, 2b, ... 2i, ..., for the display unit 4m1 and the display unit 4m2 of the mth row, the pixels may be included between the two display units , mb, ... mi these 9 pixels.
- the comparator in the display unit 411 is input to the second pixel in the display unit 411.
- the driving signal is an undelayed signal, and the driving signal is transmitted into the pixel 1a after being transmitted in the second pixel. Since the driving signal passes only the second pixel, the signal transmitted to the pixel 1a can be regarded as not A delay occurs, so that normal writing of data in the pixel 1a can be ensured, and so on, the driving signal can also ensure normal writing of data in the pixels 1b to 1i.
- the driving signal can be transmitted to the first pixel in the display unit 412 and transmitted in the first pixel.
- the driving signal may have a delay.
- the comparator in the display unit 412 can The drive signal is compared with the undelayed drive signal, and the undelayed drive signal is output to the second pixel of the display unit 412. Therefore, normal writing of data in the second pixel of the display unit 412 can be ensured.
- a plurality of pixels may be included between the display unit 412 and the display unit 413.
- the left side of the display unit 411 and the right side of the display unit 41n may also be respectively connected to a plurality of pixels (neither shown in FIG. 4).
- the comparator in each display unit in the first row can ensure the normal display of the pixels in the display unit and the plurality of pixels connected to the right side thereof, thereby ensuring normal display of all pixels in the first row.
- each line of pixels can also be displayed normally, thus ensuring the normal display of the entire display.
- the display shown in Figure 4 can ensure the normal display of each pixel, thus ensuring the normal display of the entire display.
- the display panel shown in FIG. 4 reduces the number of comparators compared to adding a comparator between every two adjacent pixels, it is possible to reduce the number of wires in the display screen. The quantity simplifies the structure of the display.
- the display screen may be simulated, and it is determined that one or more positions of the comparator are added to the display screen, specifically When determining the first position of the comparator, the simulation may be performed based on the original display screen to determine whether the output driving signal has a delay in the first or first column of pixels.
- the pixel or the pixel may be The column pixel is used as the first position of increasing the comparator; when determining the position of the second increasing comparator, the simulation can be performed based on the display screen after adding the comparator at the first position to determine the driving output of the comparator In which column or columns of pixels the signal is delayed, and the determined pixel or column of pixels is taken as the second position, and so on, it can be determined that multiple positions of the display in the display need to be added .
- one or more of the comparators can be added at a determined position, that is, the comparator can be added only at a position where the drive signal may be delayed in the display screen, such that It can effectively ensure the normal display of each pixel in the display screen while reducing the number of comparators and the number of cables in the display screen, thereby ensuring the normal display of the entire display screen and the normal display of the display device.
- a comparator may be added between two adjacent columns of pixels at the position, that is, the The comparators in the display can be arranged in columns in the display. Wherein, for two adjacent pixels located in the same row, a comparator may be disposed between the two pixels, or multiple comparators may be provided, and each of the comparators may be used to compare different types of drivers. signal.
- FIG. 5 is a schematic flowchart diagram of a pixel driving method according to an embodiment of the present application.
- the pixel driving method can be used to drive pixels in any of the display screens described in the embodiments shown in FIGS. 1 to 4.
- the driving method includes:
- Step 501 The comparator compares the first driving signal outputted by the first pixel with the second driving signal input to the comparator to determine whether the first driving signal has a delay.
- the second driving signal is a signal that does not have a delay.
- Step 502 The comparator inputs the first driving signal to the second pixel when determining that the first driving signal does not have a delay.
- Step 503 The comparator inputs the second driving signal to the second pixel when determining that the first driving signal is delayed.
- the display screen is located between the first pixel and the second pixel.
- the comparator can compare the first driving signal output by the first pixel with the second driving signal input to the comparator, and determine whether the first driving signal has a delay.
- the first driving signal may be output to the second pixel; if the comparator determines that the first driving signal is delayed, The second driving signal may be output to the second pixel. In this way, normal driving of the second pixel can be ensured, and data can be normally written into the second pixel, thereby ensuring normal display of the display screen.
- the comparator compares the first driving signal outputted by the first pixel with the second driving signal input to the comparator, and determines whether the first driving signal has a delay.
- the second driving signal is a signal in which no delay occurs; the comparator inputs the first driving signal to the second pixel when determining that the first driving signal does not have a delay; the comparator is determining When the first driving signal is delayed, the second driving signal is input to the second pixel. Since the driving signal for driving the second pixel is an undelayed signal, normal writing of data in the second pixel is not affected, thereby effectively ensuring normal display of the display device.
- the embodiment of the present application further provides a display device, and the display device may include the display screen described above. Since the added comparator in the display screen can ensure the normal display of each pixel in the display screen, the normal display of the display device can be ensured.
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- Electroluminescent Light Sources (AREA)
Abstract
一种显示屏、像素驱动方法和显示装置，该显示屏包括：至少一个显示单元（A），显示单元（A）包含第一像素（11），第二像素（12）以及比较器（13），比较器（13）的第一输入端与第一像素（11）的驱动信号输出端连接，第一像素（11）的驱动信号输出端用于输出第一驱动信号（G1）；比较器（13）的第二输入端与驱动信号线连接，驱动信号线用于提供第二驱动信号（G2），第二驱动信号为未发生延时的信号；比较器（13）的输出端与第二像素的驱动信号输入端连接；比较器（13）用于将第一驱动信号（G1）与第二驱动信号（G2）进行比较，并输出第三驱动信号（G3），第三驱动信号（G3）为未发生延时的信号，第三驱动信号（G3）用于驱动第二像素（12）。由于驱动第二像素（12）的驱动信号是未延时的信号，因此，可以保证数据正常写入第二像素（12），有效保证显示装置的正常显示。
Description
本申请涉及显示技术领域，尤其涉及一种显示屏、像素驱动方法和显示装置。
通常，有机发光显示装置中可以包含驱动器以及多个像素，每个像素可以对应一个像素电路，其中，驱动器可以产生驱动信号，该驱动信号可以在多个像素电路中传输，对每个像素电路进行扫描并写入数据，使得像素电路中的发光二极管发光，整个显示装置发光。
然而，在实际应用中，驱动信号在从一个像素电路传输到另一个像素电路时，由于像素电路中信号线的电阻以及电容等原因，导致驱动信号会不可避免的存在延时。随着有机发光显示装置分辨率的不断提高，驱动信号对每个像素的扫描有效时间在不断缩短，这样，在驱动信号存在延时的情况下，会严重影响像素中数据的写入，进而影响整个显示装置的正常显示。
发明内容
本申请的主要目的是提供一种显示屏、像素驱动方法和显示装置，旨在解决现有的有机发光显示装置中，由于驱动信号存在延时，影响像素中数据的写入，导致显示装置无法正常显示的问题。
为实现上述目的，本申请提出的显示屏，包括至少一个显示单元，所述显示单元包含第一像素，第二像素以及比较器，其中：
所述比较器的第一输入端与所述第一像素的驱动信号输出端连接，所述第一像素的驱动信号输出端用于输出第一驱动信号；
所述比较器的第二输入端与驱动信号线连接，所述驱动信号线用于提供第二驱动信号，所述第二驱动信号为未发生延时的信号；
所述比较器的输出端与所述第二像素的驱动信号输入端连接；
所述比较器用于将所述第一驱动信号与所述第二驱动信号进行比较，并输出第三驱动信号，所述第三驱动信号为未发生延时的信号，所述第三驱动 信号用于驱动所述第二像素。
可选地，所述比较器在确定所述第一驱动信号相较于所述第二驱动信号不存在延时时，输出的所述第三驱动信号为所述第一驱动信号；
所述比较器在确定所述第一驱动信号相较于所述第二驱动信号存在延时时，输出的所述第三驱动信号为所述第二驱动信号。
可选地，所述比较器在同时检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号不存在延时；
所述比较器在不同时间检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号存在延时。
可选地，所述第一像素的驱动信号输出端与所述第二像素的驱动信号输入端连接，所述第一驱动信号与所述第三驱动信号共同驱动所述第二像素。
可选地，所述第一驱动信号为扫描信号，发光控制信号，门信号以及时钟信号中的其中一个；
所述第二驱动信号与所述第一驱动信号相同。
可选地，所述显示单元中包含的所述比较器的个数至少为一个，每一个所述比较器用于输出不同的所述第三驱动信号至所述第二像素。
可选地，所述显示单元中包括三个所述比较器，所述第一像素包括三个驱动信号输出端，所述三个驱动信号输出端分别与所述三个比较器的第一输入端连接，所述三个比较器的第二输入端分别与三个驱动信号线连接，所述三个比较器的输出端分别与所述第二像素的三个驱动信号输入端连接。
可选地，所述第一像素以及所述第二像素为所述显示屏中位于同一行的两个相邻像素。
可选地，当所述显示屏中包含的所述显示单元的个数大于1时，多个所述显示单元以列和/或行的方式排布在所述显示屏中；
针对位于同一行的多个所述显示单元，每两个所述显示单元之间至少包含一个像素。
本申请实施例还提供一种如上述记载的所述显示屏中像素的驱动方法，包括：
比较器将第一像素输出的第一驱动信号与输入所述比较器的第二驱动信号进行比较，确定所述第一驱动信号是否发生延时，所述第二驱动信号为未 发生延时的信号；
所述比较器在确定所述第一驱动信号未发生延时时，将所述第一驱动信号输入至第二像素；
所述比较器在确定所述第一驱动信号发生延时时，将所述第二驱动信号输入至第二像素。
可选地，所述比较器在同时检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号未发生延时；
所述比较器在不同时间检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号发生延时。
可选地，所述第一驱动信号为扫描信号，发光控制信号，门信号以及时钟信号中的其中一个；
所述第二驱动信号与所述第一驱动信号相同。
可选地，所述比较器的个数为至少一个，每一个所述比较器输出不同的未发生延时的信号至所述第二像素。
本申请实施例还提供一种显示装置，包括上述记载的所述显示屏。
本申请实施例采用的上述至少一个技术方案能够达到以下有益效果：
本申请实施例提供的显示屏中，包括至少一个显示单元，所述显示单元包含第一像素，第二像素以及比较器，其中：所述比较器的第一输入端与所述第一像素的驱动信号输出端连接，所述第一像素的驱动信号输出端用于输出第一驱动信号；所述比较器的第二输入端与驱动信号线连接，所述驱动信号线用于提供第二驱动信号，所述第二驱动信号为未发生延时的信号；所述比较器的输出端与所述第二像素的驱动信号输入端连接；所述比较器用于将所述第一驱动信号与所述第二驱动信号进行比较，并输出第三驱动信号，所述第三驱动信号为未发生延时的信号，所述第三驱动信号用于驱动所述第二像素。这样，在显示屏的两个像素之间增加比较器，该比较器可以将其中一个像素输出的驱动信号与未发生延时的驱动信号进行比较并输出未延时的信号至另一个像素，以驱动该像素，由于驱动该像素的信号是未延时的信号，因此，不会影响该像素中数据的正常写入，保证像素的正常显示，进而保证显示装置的正常显示。
图1为本申请实施例提供的一种显示屏的结构示意图；
图2为本申请实施例提供的另一种显示屏的结构示意图；
图3为本申请实施例提供的又一种显示屏的结构示意图；
图4为本申请实施例提供的再一种显示屏的结构示意图；
图5为本申请实施例提供的一种像素驱动方法的流程示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
需要说明的是，相较于现有技术而言，本申请实施例提供的显示屏在两个像素之间增加了比较器，所述比较器可以将其中一个像素输出的驱动信号与未发生延时的驱动信号进行比较，并输出未延时的信号，该未延时的信号可以输入至另一个像素中，并驱动该像素。这样，由于驱动该像素的信号为未延时的信号，因此，可以保证数据正常写入该像素，进而保证该像素的正常显示，显示装置的正常显示。
在本申请提供的各个实施例中，所述第一驱动信号可以是所述第一像素中扫描信号、发光控制信号，门信号以及时钟信号中的其中一个，所述第二驱动信号可以是与所述第一驱动信号相同且未发生延时的信号，例如，所述第一驱动信号为发光控制信号，那么，所述第二驱动信号为对应的未发生延时的所述发光控制信号。其中，若所述扫描信号的个数、门信号的个数或时钟信号的个数是多个，那么，所述第一驱动信号可以是多个信号中的其中一个，本申请实施例不做具体限定。此外，本申请实施例也不对所述第一像素以及所述第二像素的具体电路结构进行限定。
本申请实施例提供的所述显示屏中可以包含至少一个显示单元，该显示单元中可以包含第一像素、第二像素以及比较器，所述比较器的个数可以是一个，也可以是多个，其中，每一个所述比较器可以用于比较一种驱动信号，并输出对应的未延时的信号。其中，所述比较器的具体个数可以根据所述显示屏中像素的驱动信号个数确定，本申请实施例不做具体限定。
例如，所述显示屏中像素的驱动信号为S1、S2以及S3，那么，所述比较 器的个数可以是3个，其中，第一个比较器可以用于将驱动信号S1与其对应的未延时的驱动信号进行比较，并输出未延时信号，第二个比较器可以用于将驱动信号S2与其对应的未延时的驱动信号进行比较，并输出未延时信号，第三个比较器可以用于将驱动信号S3与其对应的未延时的驱动信号进行比较，并输出未延时信号。
本申请实施例中，针对所述显示单元中包含的所述第一像素以及所述第二像素而言，考虑到像素的驱动信号通常在所述显示屏中从左往右传输，因此，所述第一像素与所述第二像素可以是位于同一行的像素。在其他实施例中，若像素中的驱动信号在所述显示屏中从上往下传输，那么，所述第一像素与所述第二像素也可以是位于同一列的像素。本申请实施例中，以驱动信号在所述显示屏中从左往右传输为例进行说明。其中，作为一种优选地方式，所述第一像素与所述第二像素可以是相邻的两个像素。
以下结合附图，详细说明本申请各实施例提供的技术方案。
图1为本申请实施例提供的一种显示屏的结构示意图。图1所示的显示屏中可以包含至少一个显示单元A(图1仅示出一个显示单元)，本申请实施例以其中一个显示单元A为例进行说明。
如图1所示，显示单元A中可以包含第一像素11、第二像素12以及比较器13，其中：
第一像素11可以包含驱动信号输出端，所述驱动信号输出端可以用于输出第一驱动信号G1，其中，第一驱动信号G1可以是第一像素11的上一级像素(例如与第一像素11相邻的左边的像素)输出的驱动信号对第一像素11进行驱动后，由第一像素11输出的驱动信号。在本申请实施例中，第一驱动信号G1可能存在延时。
第二像素12可以包含驱动信号输入端，通过所述驱动信号输入端可以向第二像素12输入驱动信号，以驱动第二像素12。
比较器13可以包含第一输入端、第二输入端以及输出端，其中：
所述第一输入端可以与第一像素11的所述驱动信号输出端连接，这样，第一驱动信号G1可以输入比较器13；
所述第二输入端可以与驱动信号线连接，所述驱动信号线可以用于提供 第二驱动信号G2，第二驱动信号G2可以是未发生延时的信号。其中，作为一种优选地方式，所述驱动信号线可以是与驱动器连接的信号线，且所述驱动信号线提供的第二驱动信号G2可以不参与对所述显示屏中像素的驱动，这样，第二驱动信号G2可以视为未发生延时的信号，其中，所述驱动器可以用于为所述显示屏中的像素提供驱动信号；
所述输出端可以与第二像素12的所述驱动信号输入端连接，其中，所述输出端可以输出信号至第二像素12。
本申请实施例中，比较器13可以将第一驱动信号G1与第二驱动信号G2进行比较，确定第一驱动信号G1是否存在延时，并根据比较结果由所述输出端输出未延时的第三驱动信号G3。
比较器13在确定第一驱动信号G1是否存在延时时，具体地，由于像素的驱动信号通常为方波信号，该方波信号可以在高电平和低电平之间变化，因此，比较器13可以检测第一驱动信号G1的电平变化与第二驱动信号G2的电平变化是否一致，若一致，则可以说明第一驱动信号G1与第二驱动信号G2同步变化，第一驱动信号G1不存在延时；若不一致，则可以说明第一驱动信号G1的变化与第二驱动信号G2的变化不同步，第一驱动信号G1存在延时。
本申请实施例中，如果比较器13确定第一驱动信号G1不存在延时，那么，可以由所述输出端输出第一驱动信号G1，此时，第一驱动信号G1可以视为第三驱动信号G3；如果比较器13确定第一驱动信号G1存在延时，那么，可以由所述输出端输出第二驱动信号G2，此时，第二驱动信号G2可以视为第三驱动信号G3，这样，比较器13输出的第三驱动信号G3为未延时的信号。
比较器13在通过上述记载的方法输出未延时的第三驱动信号G3后，第三驱动信号G3可以输入至第二像素12，并驱动第二像素12，这样，由于第三驱动信号G3是未延时的信号，因此，可以保证数据正常写入第二像素12，保证第二像素12的正常显示。
需要说明的是，本申请实施例中，所述显示单元中第一像素11的驱动信号输出端可以不与第二像素12的驱动信号输入端连接，也就是说，第一驱动信号G1不用于输入并驱动第二像素12中，这样，相较于现有技术中第一驱动信号G1输入并驱动第二像素12而言，本申请实施例由未发生延时的第三驱动信号G3代替可能存在延时的第一驱动信号G1驱动第二像素12，可以保证数据 正常写入像素电路12。
本申请实施例提供的显示屏，包括至少一个显示单元，所述显示单元包含第一像素，第二像素以及比较器，其中：所述比较器的第一输入端与所述第一像素的驱动信号输出端连接，所述第一像素的驱动信号输出端用于输出第一驱动信号；所述比较器的第二输入端与驱动信号线连接，所述驱动信号线用于提供第二驱动信号，所述第二驱动信号为未发生延时的信号；所述比较器的输出端与所述第二像素的驱动信号输入端连接；所述比较器用于将所述第一驱动信号与所述第二驱动信号进行比较，并输出第三驱动信号，所述第三驱动信号为未发生延时的信号，所述第三驱动信号用于驱动所述第二像素。由于在显示屏的两个像素之间增加比较器，该比较器可以将其中一个像素输出的驱动信号与未发生延时的驱动信号进行比较并输出未延时的信号至另一个像素，并驱动该像素，这样，由于驱动该像素的信号是未延时的信号，因此，不会影响该像素中数据的正常写入，进而保证显示装置的正常显示。
图2为本申请实施例提供的另一种显示屏的结构示意图。
图2所示的显示屏中可以包含至少一个显示单元B，针对其中一个显示单元B而言，可以包含第一像素21、第二像素22以及比较器23。
图2中的比较器23所实现的功能与图1中的比较器13实现的功能相同，这里不再重复描述，第三驱动信号G3也与图1所示的第三驱动信号G3相同，这里也不再重复描述。
图2所示的显示单元B与图1所示的显示单元A相比，不同之处在于：图2中第一像素21的驱动信号输出端与第二像素22的驱动信号输入端连接，也就是说，第一驱动信号G1可以输入并驱动第二像素22。这样，比较器13在将第一驱动信号G1以及第二驱动信号G2进行比较并输出第三驱动信号G3后，第一驱动信号G1以及第三驱动信号G3可以共同作用于第二像素22，并共同对第二像素22进行驱动。
由于图2所示的显示单元B中，未发生延时的第三驱动信号G3可以保证对第二像素22的正常驱动，因此，可以保证数据正常写入第二像素22，进而保证第二像素22的正常显示。
需要说明的是，如果图1以及图2中的第一驱动信号G1为存在延时的信号，那么，图2所示的显示屏相较于图1所示的显示屏而言，由于使用存在延时的 第一驱动信号G1以及未延时的第三驱动信号G3共同驱动第二像素12，因此，可以使得第一像素21与第二像素22的显示差异性较小，进而使得所述显示屏的显示更加均匀。
在实际应用中，所述第一像素的驱动信号输出端可以与所述第二像素的驱动信号输入端连接，也可以不与所述第二像素的驱动信号输入端连接，这里不做具体限定。作为一种优选地方式，所述第一像素的驱动信号输出端可以与所述第二像素的驱动信号输入端连接，以保证所述显示屏显示的均匀性。
本申请实施例提供的显示屏，由于在显示屏的两个像素之间增加比较器，该比较器可以将其中一个像素输出的驱动信号与未发生延时的驱动信号进行比较并输出未延时的信号至另一个像素，并驱动该像素，这样，由于驱动该像素的信号是未延时的信号，因此，不会影响该像素中数据的正常写入，进而保证显示装置的正常显示。此外，由于本申请实施例提供的显示屏中，所述第一像素输出的第一驱动信号可以输出至所述第二像素，并与所述第三驱动信号共同驱动所述第二像素，因此，可以减小所述第一像素与所述第二像素之间显示的差异性，保证显示装置显示的均匀性。
图3为本申请实施例提供的又一种显示屏的结构示意图。
图3中，所述显示屏可以包含至少一个显示单元C，针对其中一个显示单元C，该显示单元C中可以包含第一像素31、第二像素32、比较器33、比较器34以及比较器35，其中：
第一像素31中可以包含三个驱动信号输出端，并分别用于输出三个驱动信号：驱动信号S1、驱动信号S2以及驱动信号S3，其中，驱动信号S1、S2以及S3可能存在延时。
第二像素32是与第一像素31相邻的位于同一行的像素，第二像素32可以包含三个驱动信号输入端，通过这三个驱动信号输入端可以输入三个不同的驱动信号，三个不同的驱动信号可以用于驱动第二像素32。
本申请实施例中，第一像素31中的三个驱动信号输出端可以不与第二像素32的三个驱动信号输入端连接，即驱动信号S1、驱动信号S2以及驱动信号S3不用于输入并驱动第二像素32。
比较器33可以包含第一输入端、第二输入端以及输出端。其中，所述第一输入端可以与第一像素31的其中一个驱动信号输出端连接，使得第一像素 31输出的驱动信号S1输入比较器33；所述第二输入端可以与第一驱动信号线连接，所述第一驱动信号线可以用于提供驱动信号S11，驱动信号S11可以是未发生延时的信号；所述输出端可以与第二像素32的一个驱动信号输入端连接。
比较器34可以包含第一输入端、第二输入端以及输出端。其中，所述第一输入端可以与第一像素31另一个驱动信号输出端连接，使得第一像素31输出的驱动信号S2输入比较器34；所述第二输入端可以与第二驱动信号线连接，所述第二驱动信号线可以用于提供驱动信号S22，驱动信号S22可以是未发生延时的信号；所述输出端可以与第二像素32的另一个驱动信号输入端连接。
比较器35可以包含第一输入端、第二输入端以及输出端。其中，第一输入端可以与第一像素31最后一个驱动信号输出端连接，使得第一像素31输出的驱动信号S3输入比较器35；所述第二输入端可以与第三驱动信号线连接，所述第三驱动信号线可以用于提供驱动信号S33，驱动信号S33可以是未发生延时的信号；所述输出端可以与第二像素32最后一个驱动信号输入端连接。
需要说明的是，驱动信号S1与未延时的驱动信号S11为同一种信号，例如，驱动信号S1为像素中的发光控制信号，那么驱动信号S11为驱动信号S1对应的未延时的发光控制信号。同样的，驱动信号S2与未延时的驱动信号S22为同一种信号，驱动信号S3与未延时的驱动信号S33也为同一种信号。
本申请实施例中，比较器33可以通过图1所示实施例中记载的方法将驱动信号S1与驱动信号S11进行比较，并输出未发生延时的驱动信号S4，驱动信号S4输入至第二像素32中，并驱动第二像素32。
比较器34可以通过相同的方法将驱动信号S2与驱动信号S22进行比较，并输出未发生延时的驱动信号S5，驱动信号S5输入至第二像素32中，并驱动第二像素32。
比较器35也可以通过相同的方法将驱动信号S3与驱动信号S33进行比较，并输出未发生延时的驱动信号S6，驱动信号S6输入至第二像素32中，并驱动第二像素32。
这样，由于输入至第二像素32中的驱动信号S4、驱动信号S5以及驱动信号S6均为未延时的驱动信号，因此，可以保证第二像素32中数据的正常写入，进而保证第二像素32的正常显示。
本申请实施例提供的显示屏中可以包含多个比较器，每一个比较器可以将一个驱动信号与对应的未延时的驱动信号进行比较，并输出未延时的信号至另一个像素中，这样，由于输入该像素中的驱动信号均为未延时的信号，因此，可以保证像素中数据的正常写入，进而保证显示装置的正常显示。
需要说明的是，在实际应用中，针对上述记载的所述显示屏中每一行的多个像素而言，每两个相邻像素之间均可以设置上述记载的一个或多个比较器，其中，每两个相邻像素之间设置的比较器的个数可以相同，也可以不同，具体可以根据实际情况确定，这里不做具体限定。这样，可以有效保证输入每一个像素的驱动信号为未延时的信号，进而保证每一个像素的正常显示，整个显示屏的正常显示。其中，针对两个相邻的像素而言，位于左边像素的驱动信号输出端可以与位于右边的像素的驱动信号的输入端连接，也可以不连接，本申请实施例不做具体限定。
图4为本申请实施例提供的再一种显示屏的结构示意图。
图4所示的显示屏中可以包含显示单元411～41n，显示单元421～42n，……显示单元4m1～4mn，这些显示单元以阵列的方式排布在所述显示屏中，其中，图4所示的每一个显示单元可以是图1所示实施例记载的所述显示单元A，也可以是图2所示实施例记载的所述显示单元B，还可以是图3所示实施例记载的所述显示单元C，这里不做具体限定。
图4中，针对每一行的多个显示单元而言，每两个单元之间还可以包含多个像素。如图4所示，针对第一行的显示单元411与显示单元412，两个显示单元之间可以包含像素1a、1b、……1i这9个像素，针对第二行的显示单元421与显示单元422，两个显示单元之间可以包含像素2a、2b、……2i这9个像素，……，针对第m行的显示单元4m1与显示单元4m2，两个显示单元之间可以包含像素ma、mb、……mi这9个像素。
需要说明的是，图4所示的显示屏中，针对位于同一行的所述显示单元而言，以第一行为例，显示单元411中的比较器输入至显示单元411中的第二像素的驱动信号为未延时的信号，该驱动信号在所述第二像素中传输后输入像素1a中，由于该驱动信号仅经过所述第二像素，因此，传输至像素1a的信号可以视为没有发生延时，因此，可以保证像素1a中数据的正常写入，以此类推，该驱动信号还可以保证像素1b至像素1i中数据的正常写入。
之后，该驱动信号可以传输至显示单元412中的第一像素，并在该第一像素中传输，此时，该驱动信号可能存在延时，那么，由于显示单元412中的比较器可以将该驱动信号与未延时的驱动信号进行比较，并输出未延时的驱动信号至显示单元412的第二像素中，因此，可以保证显示单元412的第二像素中数据的正常写入。
图4中，显示单元412与显示单元413之间也可以包含多个像素，显示单元411左边以及显示单元41n的右边也可以分别连接多个像素(图4中均未示出)，这样，基于上述记载的内容，第一行中每一个显示单元中的比较器均可以保证该显示单元中的像素以及与其右侧连接的多个像素的正常显示，进而保证第一行所有像素的正常显示，依次类推，每一行像素也可以正常显示，这样，可以保证整个显示屏的正常显示。
图4所示的显示屏，可以保证每一个像素的正常显示，进而保证整个显示屏的正常显示。此外，由于图4所示的显示屏中，相较于在每两个相邻像素之间均增加比较器而言，减少了比较器的数量，因此，可以减少所述显示屏内排线的数量，简化了显示屏的结构。
需要说明的是，在实际应用中，在制作所述显示屏之前，可以对所述显示屏进行仿真，并确定得到在所述显示屏中增加所述比较器的一个或多个位置，具体地，在确定第一个增加比较器的位置时，可以基于原有的显示屏进行仿真，确定输出的驱动信号存在延时的第一个或第一列像素，此时，可以将该像素或该列像素作为增加比较器的第一个位置；在确定第二个增加比较器的位置时，可以基于在所述第一个位置增加比较器后的显示屏进行仿真，确定该比较器输出的驱动信号在哪一个或哪一列像素发生延时，并将确定的该像素或该列像素作为第二个位置，……以此类推，可以确定得到所述显示屏中需要增加比较器的多个位置。这样，在制作所述显示屏中，可以在确定的位置增加一个或多个所述比较器，也就是说，可以仅在所述显示屏中驱动信号可能发生延时的位置增加比较器，这样，可以在减少比较器的数量以及显示屏中排线数量的同时，有效保证所述显示屏中每一个像素的正常显示，进而保证整个显示屏的正常显示，显示装置的正常显示。
在实际应用中，作为一种优选地方式，在显示屏中确定需要增加所述比较器的位置后，可以在所述位置处相邻两列像素之间增加比较器，也就是说， 所述显示屏中的比较器可以以列的方式排布在所述显示屏中。其中，针对位于同一行的两个相邻的像素而言，该两个像素之间可以设置一个比较器，也可以设置多个比较器，每一个所述比较器可以用于比较不同类型的驱动信号。
图5为本申请实施例提供的一种像素驱动方法的流程示意图。所述像素驱动方法可以用于驱动图1至图4所示实施例中记载的任一显示屏中的像素。所述驱动方法包括：
步骤501：比较器将第一像素输出的第一驱动信号与输入所述比较器的第二驱动信号进行比较，确定所述第一驱动信号是否发生延时。
其中，所述第二驱动信号为未发生延时的信号。
步骤502：所述比较器在确定所述第一驱动信号未发生延时时，将所述第一驱动信号输入至第二像素。
步骤503：所述比较器在确定所述第一驱动信号发生延时时，将所述第二驱动信号输入至第二像素。
具体地，针对图1至图4所示实施例中记载的任一所述显示屏而言，在所述显示屏工作的过程中，所述显示屏中位于第一像素以及第二像素之间的所述比较器，可以将所述第一像素输出的第一驱动信号与输入所述比较器的第二驱动信号进行比较，并确定所述第一驱动信号是否发生延时。
所述比较器确定所述第一驱动信号是否发生延时的方法可以参见图1所示实施例中记载的方法，这里不再重复描述。
所述比较器若确定所述第一驱动信号未发生延时，则可以将所述第一驱动信号输出至所述第二像素；所述比较器若确定所述第一驱动信号发生延时，则可以将所述第二驱动信号输出至所述第二像素。这样，可以保证对所述第二像素的正常驱动，保证数据可以正常写入所述第二像素，进而保证显示屏的正常显示。
本申请实施例提供的像素驱动方法，比较器将第一像素输出的第一驱动信号与输入所述比较器的第二驱动信号进行比较，确定所述第一驱动信号是否发生延时，所述第二驱动信号为未发生延时的信号；所述比较器在确定所述第一驱动信号未发生延时时，将所述第一驱动信号输入至第二像素；所述比较器在确定所述第一驱动信号发生延时时，将所述第二驱动信号输入至第二像素。由于驱动第二像素的驱动信号是未延时的信号，因此，不会影响第 二像素中数据的正常写入，进而有效保证显示装置的正常显示。
本申请实施例还提供了一种显示装置，所述显示装置可以包含上述记载的所述显示屏。由于所述显示屏中增加的比较器可以保证所述显示屏中每一个像素的正常显示，因此，可以保证所述显示装置的正常显示。
本领域的技术人员应明白，尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
Claims (14)
- 一种显示屏，包括：至少一个显示单元，所述显示单元包含第一像素，第二像素以及比较器，其中：所述比较器的第一输入端与所述第一像素的驱动信号输出端连接，所述第一像素的驱动信号输出端用于输出第一驱动信号；所述比较器的第二输入端与驱动信号线连接，所述驱动信号线用于提供第二驱动信号，所述第二驱动信号为未发生延时的信号；所述比较器的输出端与所述第二像素的驱动信号输入端连接；所述比较器用于将所述第一驱动信号与所述第二驱动信号进行比较，并输出第三驱动信号，所述第三驱动信号为未发生延时的信号，所述第三驱动信号用于驱动所述第二像素。
- 如权利要求1所述的显示屏，其中，所述比较器在确定所述第一驱动信号相较于所述第二驱动信号不存在延时时，输出的所述第三驱动信号为所述第一驱动信号；所述比较器在确定所述第一驱动信号相较于所述第二驱动信号存在延时时，输出的所述第三驱动信号为所述第二驱动信号。
- 如权利要求2所述的显示屏，其中，所述比较器在同时检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号不存在延时；所述比较器在不同时间检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号存在延时。
- 如权利要求1所述的显示屏，其中，所述第一像素的驱动信号输出端与所述第二像素的驱动信号输入端连接，所述第一驱动信号与所述第三驱动信号共同驱动所述第二像素。
- 如权利要求1至4任一项所述的显示屏，其中，所述第一驱动信号为扫描信号，发光控制信号，门信号以及时钟信号中的其中一个；所述第二驱动信号与所述第一驱动信号相同。
- 如权利要求5所述的显示屏，其中，所述显示单元中包含的所述比较器的个数至少为一个，每一个所述比较器用于输出不同的所述第三驱动信号至所述第二像素。
- 如权利要求6所述的显示屏，其中，所述显示单元中包括三个所述比较器，所述第一像素包括三个驱动信号输出端，所述三个驱动信号输出端分别与所述三个比较器的第一输入端连接，所述三个比较器的第二输入端分别与三个驱动信号线连接，所述三个比较器的输出端分别与所述第二像素的三个驱动信号输入端连接。
- 如权利要求6所述的显示屏，其中，所述第一像素以及所述第二像素为所述显示屏中位于同一行的两个相邻像素。
- 如权利要求8所述的显示屏，其中，当所述显示屏中包含的所述显示单元的个数大于1时，多个所述显示单元以列和/或行的方式排布在所述显示屏中；针对位于同一行的多个所述显示单元，每两个所述显示单元之间至少包含一个像素。
- 一种显示屏中像素的驱动方法，其中，包括：比较器将第一像素输出的第一驱动信号与输入所述比较器的第二驱动信号进行比较，确定所述第一驱动信号是否发生延时，所述第二驱动信号为未发生延时的信号；所述比较器在确定所述第一驱动信号未发生延时时，将所述第一驱动信号输入至第二像素；所述比较器在确定所述第一驱动信号发生延时时，将所述第二驱动信号输入至第二像素。
- 如权利要求10所述的驱动方法，其中，所述比较器在同时检测到所述第一驱动信号以及所述第二驱动信号发生 变化时，确定所述第一驱动信号未发生延时；所述比较器在不同时间检测到所述第一驱动信号以及所述第二驱动信号发生变化时，确定所述第一驱动信号发生延时。
- 如权利要求10所述的方法，其中，所述第一驱动信号为扫描信号，发光控制信号，门信号以及时钟信号中的其中一个；所述第二驱动信号与所述第一驱动信号相同。
- 如权利要求10所述的方法，其中，所述比较器的个数为至少一个，每一个所述比较器输出不同的未发生延时的信号至所述第二像素。
- 一种显示装置，包括如权利要求1至9任一项所述的显示屏。
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| US (1) | US10755629B2 (zh) |
| CN (1) | CN107610646B (zh) |
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| CN107610646B (zh) | 2017-10-31 | 2019-07-26 | 云谷（固安）科技有限公司 | 一种显示屏、像素驱动方法和显示装置 |
| CN113096611B (zh) * | 2021-04-01 | 2023-03-14 | 福州京东方光电科技有限公司 | 静电防护方法、装置及显示装置 |
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| Publication number | Publication date |
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| TWI670704B (zh) | 2019-09-01 |
| US10755629B2 (en) | 2020-08-25 |
| US20200184882A1 (en) | 2020-06-11 |
| CN107610646B (zh) | 2019-07-26 |
| CN107610646A (zh) | 2018-01-19 |
| TW201835890A (zh) | 2018-10-01 |
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