WO2024000228A1 - 显示装置及其信号同步方法、像素电路 - Google Patents
显示装置及其信号同步方法、像素电路 Download PDFInfo
- Publication number
- WO2024000228A1 WO2024000228A1 PCT/CN2022/102212 CN2022102212W WO2024000228A1 WO 2024000228 A1 WO2024000228 A1 WO 2024000228A1 CN 2022102212 W CN2022102212 W CN 2022102212W WO 2024000228 A1 WO2024000228 A1 WO 2024000228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- controller
- control command
- control
- display
- display area
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 41
- 230000004044 response Effects 0.000 claims abstract description 13
- 230000001934 delay Effects 0.000 claims description 4
- 230000037230 mobility Effects 0.000 claims 3
- 238000004590 computer program Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 5
- 229920001621 AMOLED Polymers 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 208000033361 autosomal recessive with axonal neuropathy 2 spinocerebellar ataxia Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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]
Definitions
- the present disclosure relates to the field of display technology, and in particular, to a display device, a signal synchronization method thereof, and a pixel circuit.
- FPGA Field Programmable Gate Array
- a display device including: a display screen, a driving circuit, a first controller and a second controller.
- the display screen includes a first display area and a second display area.
- the driving circuit is configured to send a control signal to the first controller and/or the second controller.
- the first controller is configured to perform display control on the first display area in response to the control signal;
- the second controller is configured to: display the second display area in response to the control signal. control.
- the display time difference between the first display area and the second display area is less than the threshold time.
- the first controller is configured to: receive the control signal, obtain a first control command according to the control signal, and send the first control command to the second controller; the first control After sending the first control command to the second controller, the controller performs display control on the first display area based on the first control command after delaying the first time period; wherein, the first time period is when the first controller sends the first control command to the second controller. The time after sending the first control command to the second controller to receive the first control command.
- the second controller is configured to: receive the first control command, and perform display control on the second display area based on the first control command.
- the first controller is a master controller and the second controller is a slave controller.
- the first controller is configured to: receive a control signal, obtain a first control command according to the control signal, and send the first control command to the second controller.
- the second controller is configured to: receive a control signal, obtain a second control command according to the control signal, and send the second control command to the first controller.
- the first controller is further configured to: receive a second control command, and obtain a third control command based on the first control command and the second control command; and perform display control on the first display area according to the third control command.
- the second controller is further configured to: receive the first control command, and obtain a fourth control command based on the first control command and the second control command; and perform display control on the second display area according to the fourth control command.
- the third control command and the fourth control command are the same, or the signal overlap rate of the third control command and the fourth control command is greater than 99%.
- the first controller is further configured to perform an AND operation on the first control command and the second control command to obtain a third control command.
- the second controller is further configured to perform an AND operation on the first control command and the second control command to obtain a fourth control command.
- the first control command and/or the second control command are transmitted between the first controller and the second controller through a low voltage differential signal LVDS or pin to pin.
- the second controller is configured to: receive a control signal, obtain a second control command according to the control signal; and perform display control on the second display area based on the second control command.
- the first controller is configured to: receive a control signal, and obtain a first control command according to the control signal; and after delaying for a second period of time from obtaining the control signal, the first controller performs the first control command on the first control signal based on the first control signal.
- a display area performs display control; wherein the second duration is the time difference between the time when the second controller receives the control signal and the time when the first controller receives the control signal.
- the length of the signal line from the driving circuit to the first controller is the same as the length of the signal line from the driving circuit to the second controller.
- control signal is used to control the display screen to turn on or off.
- the control signal includes a compensation signal for compensating the threshold voltage and/or mobility of the transistors of the first display area and the second display area.
- the threshold time is less than 14.4 microseconds.
- a pixel circuit is provided, which is applied to a display screen.
- the display screen includes a first display area and a second display area.
- the pixel circuit of the first display area and the pixel circuit of the second display area are configured to receive a compensation signal, the compensation signal is used to compensate the threshold voltage and/or mobility of the transistors in the pixel circuit of the first display area and the second display area, So that the display time difference between the first display area and the second display area is less than the threshold time.
- the threshold time is less than 14.4 microseconds.
- a signal synchronization method for a display device includes a display screen, a first controller and a second controller.
- the display screen includes a first display area and a second display area, a first controller is used to control the first display area, and a second controller is used to control the second display area.
- the signal synchronization method includes: a first controller and/or a second controller receiving a control signal from a driving circuit; the first controller responds to the control signal to perform display control on the first display area; the second controller The controller responds to the control signal to perform display control on the second display area; wherein the display time difference between the first display area and the second display area is less than the threshold time.
- the method when the first controller receives the control signal from the driving circuit, the method further includes: the first controller obtains the first control command according to the control signal, and sends the first control command to the second controller. Control command; the second controller receives the first control command from the first controller, and based on the first control command, performs display control on the second display area; wherein, the first controller performs display control on the first display area, It includes: starting from sending the first control command to the second controller, the first controller delays for a first time period, and then performs display control on the first display area based on the first control command; the first time period is when the first controller sends the first control command to the second controller. The time when the second controller sends the first control command to the second controller and obtains the first control command after receiving it.
- the method further includes: the first controller obtains the first control command according to the control signal, and sends the first control command to the second controller.
- the controller sends the first control command; the second controller obtains the second control command according to the control signal and sends the second control command to the first controller; the first controller receives the second control command; the second controller receives the first control command.
- the second controller performs display control on the second display area, including: the second controller obtains a fourth control command based on the first control command and the second control command; and controls the second display area according to the fourth control command. area for display control.
- the third control command and the fourth control command are the same, or the signal overlap rate of the third control command and the fourth control command is greater than 99%.
- obtaining the third control command based on the first control command and the second control command includes: performing an AND operation on the first control command and the second control command to obtain the third control command.
- the method when the first controller and the second controller receive the control signal from the driving circuit, the method further includes: the second controller obtains the second control command according to the control signal; and based on the second control command to perform display control on the second display area; the first controller obtains the first control command according to the control signal; wherein the first controller performs display control on the first display area, including: the first controller obtains the control signal from After a second delay, display control is performed on the first display area based on the first control command; the second time period is the time difference between the time when the second controller receives the control signal and the time when the first controller receives the control signal.
- control signal is used to control the display screen to turn on or off.
- the control signal includes a compensation signal for compensating the threshold voltage and/or mobility of the transistors of the first display area and the second display area.
- the threshold time is less than 14.4 microseconds.
- Figure 1 is a structural diagram of a display device according to some embodiments.
- Figure 2 is a schematic diagram of an FPGA receiving a shutdown compensation signal according to some embodiments
- Figure 3A is a structural diagram of another display device according to some embodiments.
- Figure 3B is a schematic diagram of a pixel circuit according to some embodiments.
- Figure 4 is a structural diagram of yet another display device according to some embodiments.
- Figure 5 is a schematic diagram of generating a third shutdown compensation command and a fourth shutdown compensation command according to some embodiments
- Figure 6 is a structural diagram of another display device according to some embodiments.
- Figure 7 is a structural diagram of another display device according to some embodiments.
- Figure 8 is a schematic diagram illustrating the time difference between multiple controllers receiving shutdown compensation signals according to some embodiments.
- Figure 9 is a schematic diagram of multiple controllers synchronously receiving shutdown compensation signals according to some embodiments.
- Figure 10 is a flow chart of a signal synchronization method of a display device according to some embodiments.
- Figure 11 is a flow chart of another signal synchronization method of a display device according to some embodiments.
- FIG. 12 is a flowchart of yet another signal synchronization method of a display device according to some embodiments.
- first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.
- At least one of A, B and C has the same meaning as “at least one of A, B or C” and includes the following combinations of A, B and C: A only, B only, C only, A and B The combination of A and C, the combination of B and C, and the combination of A, B and C.
- a and/or B includes the following three combinations: A only, B only, and a combination of A and B.
- the term “if” is optionally interpreted to mean “when” or “in response to” or “in response to determining” or “in response to detecting,” depending on the context.
- the phrase “if it is determined" or “if [stated condition or event] is detected” is optionally interpreted to mean “when it is determined" or “in response to the determination" or “on detection of [stated condition or event]” or “in response to detection of [stated condition or event]”.
- FIG. 1 is a structural diagram of a display device 10 .
- the display device 10 includes an FPGA 11, an FPGA 12, a screen driver board (Time Control Register, TCON) 13 and a display screen 14.
- the FPGA 11 is configured to perform display control on the right half of the display screen 14, and the FPGA 12 is configured to perform display control on the left half of the display screen 14.
- the TOCN board 13 is configured to send a control signal to the FPGA 11 and the FPGA 12.
- the control signal is, for example, a shutdown compensation signal that controls the display screen 14 to turn off.
- FPGA 11 and FPGA 12 receive the shutdown compensation signal, process the shutdown compensation signal, and generate corresponding shutdown compensation commands (such as Sense Vth and Sense K etc.).
- FPGA 11 and FPGA 12 then respectively control the light-emitting elements in the right half screen and left half screen of the display screen 14 to turn off according to the shutdown compensation commands generated respectively.
- the wiring lines from the TCON board 13 to the FPGA 11 and the FPGA 12 are different, that is, the lengths of the signal lines 131 from the TCON board 13 to the FPGA 11 and the signal lines 132 from the TCON board 13 to the FPGA 12 are different. Therefore, the time when FPGA 11 receives the shutdown compensation signal is inconsistent with the time when FPGA 12 receives the shutdown compensation signal. Therefore, the time when FPGA 11 controls the right half of the display screen 14 to turn off and the time when FPGA 12 controls the left half of the display screen 14 to turn off are exactly the same. will be out of sync, causing the display screen 14 to appear left and right split screens.
- the length of the signal line 131 from the TCON board 13 to the FPGA 11 is shorter than the length of the signal line 132 from the TCON board 13 to the FPGA 12. Therefore, as shown in Figure 2, the FPGA 12 receives the signal sent by the TCON board 13
- the time t2 of the shutdown compensation signal 22 is later than the time t1 when the FPGA 11 receives the shutdown compensation signal 21 sent by the TCON board 13.
- some embodiments of the present disclosure provide a display device that can ensure that multiple controllers simultaneously control the light-emitting elements of corresponding display areas in the display screen to light up or extinguish, so that the display screen does not have a split-screen problem.
- FIG. 3A shows a display device 30 provided by some embodiments of the present disclosure.
- the display device 30 may be an OLED display device, a quantum dot electroluminescent diode (Quantum Dot Light Emitting Diodes, QLED) display device, or an active matrix organic light emitting diode (Active-matrix Organic Light Emitting Diode, AMOLED) display device.
- QLED Quantum Dot Light Emitting Diodes
- AMOLED Active-matrix Organic Light Emitting Diode
- the display device 30 includes a display screen 14, a driving circuit 33 and a plurality of controllers.
- the multiple controllers include but are not limited to at least one of integrated circuits such as FPGA and application specific integrated circuit (Application Specific Integrated Circuit, ASIC).
- the plurality of controllers include a first controller 31 and a second controller 32 .
- the first controller 31 may be an FPGA or an ASIC
- the second controller 32 may also be an FPGA or an ASIC.
- the types of the first controller 31 and the second controller 32 may be the same or different.
- the embodiment of the present disclosure does not limit the number and types of multiple controllers.
- the display screen 14 includes multiple display areas, the multiple display areas do not overlap with each other, and each display area includes multiple light-emitting elements.
- the multiple display areas may include, for example, a first display area 141 and a second display area 142.
- the first display area 141 and the second display area 142 may constitute the entire display area of the display screen 14, or may constitute part of the display area of the display screen 14. .
- the embodiment of the present disclosure does not limit the number of display areas divided by the display screen 14 .
- the first controller 31 is used to control the display of the first display area 141
- the second controller 32 is used to control the display of the second display area 142.
- the first controller 31 is used to control the lighting or extinguishing of the light-emitting elements in the first display area 141
- the second controller 32 is used to control the lighting or extinguishing of the light-emitting elements in the second display area 142.
- the driving circuit 33 may be, for example, a screen driving board, or may be a dial, key or other type of driving circuit.
- the driving circuit 33 is configured to send a control signal to the first controller 31 and/or the second controller 32 .
- the control signal sent by the driving circuit 33 is an external control signal.
- control signal sent by the driving circuit 33 is used to control the display screen 14 to turn on or off.
- control signal may include a shutdown compensation signal and/or a startup compensation signal.
- the display screen 14 may include a plurality of sub-pixels arranged in an array, and each sub-pixel includes a light-emitting element OLED and a pixel circuit.
- FIG. 3B is a schematic diagram of a pixel circuit provided by an embodiment of the present disclosure.
- the pixel circuit may be, for example, a 3T1C pixel circuit.
- the pixel circuit includes: a first transistor 361 , a second transistor 362 , a third transistor 363 and a capacitor Cst.
- the control end of the first transistor 361 is coupled to the gate drive signal line SCAN1 .
- the first transistor 361 The first terminal of the first transistor 361 is coupled to the data signal terminal DATA, and the second terminal of the first transistor 361 is coupled to the first node N1.
- the control terminal of the second transistor 362 is coupled to the gate drive signal line SCAN2, the first terminal of the second transistor 362 is coupled to the second node N2, and the second terminal of the second transistor 362 is coupled to the sensing terminal SENSE.
- the control terminal of the third transistor 363 is coupled to the first node N1, the first terminal of the third transistor 363 is coupled to the voltage terminal Vdd, and the second terminal of the third transistor 363 is coupled to the second node N2.
- the first terminal of the capacitor Cst is coupled to the first node N1, and the second terminal of the capacitor Cst is coupled to the second node N2.
- the first terminal of the light-emitting element OLED is coupled to the second node N2, and the second terminal of the light-emitting element OLED is coupled to the voltage terminal Vss.
- the signals of the gate drive signal line SCAN1 and the gate drive signal line SCAN2 may be the same or different, and the embodiments of the present disclosure are not limited thereto.
- the control signal in the embodiments of the present disclosure includes a compensation signal, which is used to The threshold voltage and/or mobility of the transistors in the first display area 141 and the second display area 142 are compensated. Therefore, the problem of uneven display brightness of the display screen 14 can be improved, and the display quality of the display screen 14 can be improved.
- the compensation signal may be Sense Vth and/or Sense K, and the embodiment of the disclosure does not limit the type of the compensation signal.
- the first controller 31 is configured to perform display control on the first display area 141 in response to the control signal.
- the second controller 32 is configured to perform display control on the second display area 142 in response to the control signal.
- the display time difference between the first display area 141 and the second display area 142 is less than the threshold time.
- the threshold time may be less than 14.4 microseconds.
- the threshold time may be 10 microseconds, 5 microseconds, 3 microseconds, or other values less than 14.4 microseconds.
- the embodiment of the present disclosure does not limit the value of the threshold time. That is to say, when the display time difference between the first display area 141 and the second display area 142 is less than 10 microseconds or 5 microseconds or 3 microseconds, the user will not perceive the split-screen phenomenon on the display screen 14 .
- the threshold time can also be 0 microseconds.
- the display times of the first display area 141 and the second display area 142 are completely synchronized, so the screen splitting phenomenon will not occur on the display screen 14 .
- the display device provided by the embodiment of the present disclosure can also compensate the threshold voltage and/or mobility of the transistor through the compensation signal, so as to improve the problem of uneven brightness display of the display screen 14 and improve the display quality of the display screen 14 .
- the driving circuit 33 is coupled to the first controller 31 and is configured to send a control signal to the first controller 31 .
- the first controller 31 is coupled to the second controller 32 and is configured to receive a control signal from the drive circuit 33 , obtain a first control command according to the control signal, and send a first control command to the second controller 32 . control commands.
- the first controller 31 may be a master controller
- the second controller may be a slave controller.
- the main controller may be preset in the display device 30 .
- the number of master controllers and slave controllers included in the display device 30 may be one or multiple, and the embodiment of the present disclosure does not limit the number of master controllers and slave controllers included in the display device 30 .
- the drive circuit 33 sends a shutdown compensation signal to the first controller 31 .
- the first controller 31 receives the shutdown compensation signal
- the shutdown compensation signal is After logical processing, a corresponding first control command is generated, and the first shutdown compensation command is sent to the second controller 32 .
- the first controller 31 transmits the first control command to the second controller 32 through a low-voltage differential signal (LVDS) or pin to pin.
- LVDS low-voltage differential signal
- the embodiment of the disclosure does not limit the transmission method between the first controller 31 and the second controller 32 .
- the second controller 32 is configured to: receive the first control command, and perform display control on the second display area 142 based on the first control command.
- the second controller 32 when the second controller 32 receives the first shutdown compensation command sent by the first controller 31 , based on the first shutdown compensation command, it controls the display of the second display area 142 and controls the second display.
- the light-emitting device in area 142 is turned off.
- the first controller 31 is further configured to perform display control on the first display area 141 based on the first control command after a first delay from sending the first control command to the second controller 32 .
- the first duration is the time from when the first controller 31 sends the first control command to the second controller 32 to the time when the second controller 32 receives the first control command.
- the first controller 31 sends the first shutdown compensation command to the second controller 32 , it needs to wait for a first period of time before controlling the light-emitting devices in the first display area 141 to turn off.
- the first controller 31 transmits the first control command to the second controller 32 through LVDS
- the first controller 31 performs data packaging, encoding, etc. on the first control command, and then processes the processed first control command.
- a control command is transmitted to the second controller 32 through LVDS TX.
- the second controller 32 receives the processed first control command through LVDS RX, decodes the processed control command, and selects the required first control command.
- the first period of time includes the time consuming of the LVDS TX transmission of the first controller 31, the LVDS RX reception of the second controller 32, decoding, and selecting the first control command.
- the time consuming period can be Denote it as ⁇ T1 (eg, ⁇ T1 is greater than zero). Understandably, ⁇ T1 can be obtained through advance testing.
- the first controller 31 transmits the first control command to the second controller 32 through LDVS, from the time when the first controller 31 sends the first control command to the second controller 32 to when the second controller 32 receives it
- the time required to obtain the first control command is ⁇ T1. Therefore, the time for the first controller 31 to wait for ⁇ T1 before performing display control on the first display area 141 is the same as the time for the second controller 32 to perform display control on the second display after obtaining the first control command.
- the display control time of area 142 is the same. That is, the display control of the first display area 141 and the second display area 142 is synchronized, so the display screen 14 will not have a split-screen phenomenon.
- the first controller 31 transmits the first control command to the second controller 32 through pin to pin
- the first controller 31 directly sends the first control command to the second controller 32 through the chip pin
- the time-consuming process of pin to pin transmission is very small and can be ignored under normal circumstances. That is, when the first controller 31 sends the first control command to the second controller 32 through pin to pin, the time consuming ⁇ T1 of this process is approximately zero.
- the first controller 31 can perform display control on the first display area 141.
- the second controller 32 can perform display control on the second display area according to the first control command.
- the area 142 performs display control, so that the display time difference between the first display area 141 and the second display area 142 is less than the threshold time, thereby solving the split-screen problem of the display screen 14 .
- a display device 40 is also provided, as shown in FIG. 4 .
- the difference between the display device 40 and the display device 30 shown in FIG. 3A is that FIG. 4
- the middle driving circuit 33 is coupled to the second controller 32 .
- the circuit functions of the display device 40 shown in FIG. 4 will be introduced.
- the first controller 31 can be a master controller or a slave controller
- the second controller 32 can also be a master controller or a slave controller.
- the driving circuit 33 is configured to send control signals to the first controller 31 and the second controller 32 respectively.
- the first controller 31 is configured to receive the control signal, generate a first control command based on the control signal, and send the first control command to the second controller 32 .
- the second controller 32 is configured to receive the control signal, generate a second control command based on the control signal, and send the second control command to the first controller 31 .
- the drive circuit 33 sends the shutdown compensation signal to the first controller 31 through the signal line 331 , and simultaneously sends the shutdown compensation signal to the second controller 32 through the signal line 332 .
- the first controller 31 and the second controller 32 each generate corresponding first shutdown compensation commands and second shutdown compensation commands.
- the first controller 31 sends a first shutdown compensation command to the second controller 32
- the second controller 32 sends a second shutdown compensation command to the first controller 31 .
- the first controller 31 is further configured to: receive the second control command, obtain a third control command based on the first control command and the second control command; and perform display control on the first display area 141 according to the third control command.
- the second controller 32 is also configured to: receive the first control command, obtain a fourth control command based on the first control command and the second control command; and perform display control on the second display area 142 according to the fourth control command.
- the third control command and the fourth control command are the same, or the signal overlap rate of the third control command and the fourth control command is greater than 99%. That is to say, when the third control command and the fourth control command are the same, or the signal overlap rate is greater than 99%, the display time difference between the first display area 141 and the second display area 142 is less than the threshold time. Therefore, the display screen 14 will not Split screen occurs.
- the first controller 31 sends a first shutdown compensation command to the second controller 32 through the signal line 311
- the second controller 32 sends a second shutdown compensation command to the first controller 31 through the signal line 321
- the first controller 31 may use the same signal line to send the first shutdown compensation command and receive the second shutdown compensation command, or may use different signal lines to respectively send the first shutdown compensation command and receive the second shutdown compensation command.
- the signal line 311 and the signal line 321 may be the same signal line or different signal lines.
- the signal line 311 and the signal line 321 may be the wiring between the chip pins of the first controller 31 and the second controller 32, or they may be the LDVS TX/RX of the first controller 31 and the LVDS of the second controller 32. The trace between RX/TX.
- the third control command includes a control command obtained by ANDing the first control command and the second control command by the first controller 31 .
- the fourth control command includes a control command obtained by ANDing the first control command and the second control command by the second controller 32 .
- the embodiment of the present disclosure does not limit the time sequence in which the first controller 31 and the second controller 32 receive the control signal sent by the driving circuit 33.
- the following is an example of an example in which the first controller 31 receives the control signal sent by the driving circuit 33 earlier than the first controller 31 .
- the first controller 31 receives the second shutdown compensation command 52 sent by the second controller 32, and performs an AND operation on the first shutdown compensation command 51 and the second shutdown compensation command 52 to obtain the third shutdown compensation command 52. Compensation command 54.
- the first controller 31 controls the light-emitting devices in the first display area 141 to turn off according to the third shutdown compensation command 54 .
- the second controller 32 receives the first shutdown compensation command 51 sent by the first controller 31 and performs an AND operation on the first shutdown compensation command 51 and the second shutdown compensation command 52 to obtain a fourth shutdown compensation command 55 .
- the second controller 32 controls the light-emitting devices in the second display area 142 to turn off according to the fourth shutdown compensation command 55 .
- the third shutdown compensation command 54 and the fourth shutdown compensation command 55 are the same.
- first shutdown compensation command 51 and the second shutdown compensation command 52 are transmitted for the same length of time between the first controller 31 and the second controller 32 . Therefore, after the "handshake" operation is performed between the first controller 31 and the second controller 32, the time difference between the first controller 31 and the second controller 32 receiving the shutdown compensation signal from the driving circuit 33 can be offset, so that the display In the device 40 , the third shutdown compensation command 54 and the fourth control command 55 for display control by the first controller 31 and the second controller 32 are the same or the signal overlap rate is greater than 99%.
- the first controller 31 and the second controller 32 control the extinguishing of the light-emitting elements in the first display area 141 and the second display area 142 based on the third shutdown compensation command 54 and the fourth shutdown compensation command 55 respectively, they can ensure that The display time difference between the first display area 141 and the second display area 142 is less than the threshold time, which solves the screen splitting problem of the display screen 14 .
- the first controller 31 and the second controller 32 by performing a "handshake" operation between the first controller 31 and the second controller 32, it is also possible to avoid transmission abnormalities between the drive circuit 33 and the first controller 31 or the second controller 32 causing the display screen to break down. It can also avoid the problem of screen splitting on the display screen 14 due to abnormal transmission between the first controller 31 and the second controller 32 .
- the length of the signal line 331 from the driving circuit 33 to the first controller 31 and the length of the signal line 332 from the driving circuit 33 to the second controller 32 are the same.
- the drive circuit 33 sends the shutdown compensation signal to the first controller 31 through the signal line 331 , and simultaneously sends the shutdown compensation signal to the second controller 32 through the signal line 332 .
- the shutdown compensation signal sent by the driving circuit 33 reaches the first controller 31 and the second controller 32 .
- the time of the controller 32 is the same, so the first controller 31 and the second controller 32 can respectively control the first display area 141 and the second display area 142 synchronously to avoid split screens on the display screen 14 .
- a display device 70 is also provided.
- the following uses the driving circuit 33 in the display device 70 to the first control Taking the length of the signal line 331 of the controller 31 to be shorter than the length of the signal line 332 from the driving circuit 33 to the second controller 32 as an example, the circuit function of the display device 70 shown in FIG. 7 will be introduced.
- the driving circuit 33 is coupled to the first controller 31 and the second controller 32, and is configured to send control signals to the first controller 31 and the second controller 32 respectively.
- the second controller 32 is configured to: receive the control signal, obtain a second control command according to the control signal; and perform display control on the second display area 142 based on the second control command.
- the first controller 31 is configured to: receive the control signal, obtain a first control command according to the control signal; and, after a second delay from obtaining the control signal, control the first display area 141 based on the first control command. Perform display control.
- the second duration is the time difference between the time when the second controller 32 receives the control signal and the time when the first controller 31 receives the control signal.
- the first controller 31 since the length of the signal line 331 from the driving circuit 33 to the first controller 31 is shorter than the length of the signal line 332 from the driving circuit 33 to the second controller 32 , the first controller 31 The time when the shutdown compensation signal is received is earlier than the time when the second controller 32 receives the shutdown compensation signal. Therefore, when the first controller 31 waits for the second time period ⁇ T2 after receiving the shutdown compensation signal, that is, the first controller 31 waits until the second controller 32 also receives the shutdown compensation signal sent by the driving circuit 33.
- the controller 31 then controls the time when the light-emitting elements in the first display area 141 are turned off based on the first shutdown compensation command, which is synchronized with the time when the second controller 32 controls the time when the light-emitting elements in the display area 142 are turned off via the second shutdown control command.
- the second duration ⁇ T2 can be obtained through testing in advance.
- the size of ⁇ T2 is related to the lengths of the signal lines 331 and 332 .
- the first controller 31 receives the shutdown compensation signal sent by the driving circuit 33 at time t3, and the second controller 32 receives the shutdown compensation signal from the driving circuit 33 at time t4.
- Shutdown compensation signal sent As shown in Figure 9, the first controller 31 waits for 14.4 microseconds after receiving the shutdown compensation signal at time t3, and then controls the light-emitting elements in the first display area 141 to turn off. That is, the first controller 31 controls the first display at time t4. The light-emitting elements in area 141 are turned off.
- the second controller 32 directly controls the light-emitting elements in the second display area 142 to extinguish. Therefore, the first controller 31 controls the extinguishing time of the first display area 141 and the second controller 32 controls the second display.
- the area 142 goes out for the same time, which solves the split-screen problem of the display screen 14 .
- Some embodiments of the present disclosure provide a pixel circuit, which is applied to a display screen.
- the display screen may be, for example, the display screen 14 in the above embodiment.
- the display screen 14 includes a first display area 141 and a second display area 142 .
- the pixel circuits of the first display area 141 and the second display area 142 are used to receive a compensation signal, and the compensation signal is used to compensate the threshold voltage and/or the threshold voltage of the transistors in the pixel circuits of the first display area 141 and the second display area 142 Or mobility, so that the display time difference between the first display area 141 and the second display area 142 is less than the threshold time.
- the pixel circuits of the first display area 141 and the pixel circuits of the second display area 142 may be the same or different.
- both the pixel circuit of the first display area 141 and the pixel circuit of the second display area 142 may be the pixel circuit shown in FIG. 3B.
- the compensation signal received by the pixel circuit may be, for example, Sense Vth and/or Sense K in the above embodiment.
- the compensation signal Sense Vth and/or Sense K can compensate the threshold voltage and/or mobility of the transistors in the pixel circuits of the first display area 141 and the second display area 142, so that the first display area 141 and the second display area 142
- the display time difference is less than a threshold time, for example, less than 14.4 microseconds, thereby ensuring that the display screen 14 will not have a split-screen phenomenon.
- Some embodiments of the present disclosure provide a signal synchronization method for a display device.
- the signal synchronization method of the display device 30 includes steps 101 to 107 .
- Step 101 the driving circuit 33 sends a control signal to the first controller 31.
- Step 102 The first controller 31 receives the control signal.
- Step 103 The first controller 31 obtains the first control command according to the control signal.
- Step 104 The first controller 31 sends the first control command to the second controller 32.
- Step 105 The second controller 32 receives the first control command.
- Step 106 The second controller 32 performs display control on the second display area 142 based on the first control command.
- Step 107 The first controller 31 delays the first time period from sending the first control command to the second controller 32, and then controls the display of the first display area 141 based on the first control command.
- the first duration is the time from when the first controller 31 sends the first control command to the second controller 32 to when the second controller 32 receives the first control command.
- the first controller 31 is a master controller and the second controller 32 is a slave controller.
- the signal synchronization method of the display device 40 includes steps 1111 to 1123.
- step 1111 the driving circuit 33 sends control signals to the first controller 31 and the second controller 32 respectively.
- Step 1112 the first controller 31 receives the control signal.
- Step 1113 the second controller 32 receives the control signal.
- Step 1114 The first controller 31 obtains the first control command according to the control signal.
- Step 1115 The second controller 32 obtains the second control command according to the control signal.
- Step 1116 The first controller 31 sends the first control command to the second controller 32.
- Step 1117 the second controller 32 receives the first control command.
- Step 1118 the second controller 32 sends the second control command to the first controller 31.
- Step 1119 the first controller 31 receives the second control command.
- Step 1120 the first controller 31 obtains the third control command based on the first control command and the second control command.
- step 1121 the first controller 31 controls the display of the first display area 141 based on the third control command.
- Step 1122 The second controller 32 obtains a fourth control command based on the first control command and the second control command.
- Step 1123 The second controller 32 performs display control on the second display area 142 based on the fourth control command.
- step 1116 may be executed before step 1118, may be executed after step 1118, or may be executed simultaneously with step 1118.
- the third control command and the fourth control command may be the same, or the signal overlap rate of the third control command and the fourth control command is greater than 99%.
- the first controller 31 obtains the third control command based on the first control command and the second control command, including: performing an AND operation on the first control command and the second control command to obtain the third control command. Order.
- the second controller 32 obtains the fourth control command based on the first control command and the second control command, including: performing an AND operation on the first control command and the second control command to obtain the fourth control command.
- the first control command and/or the second control command are transmitted between the first controller 31 and the second controller 32 through a low voltage differential signal LVDS or pin to pin.
- the signal synchronization method of the display device 70 includes steps 121 to 127 .
- step 121 the driving circuit 33 sends control signals to the first controller 31 and the second controller 32 respectively.
- Step 122 the first controller 31 receives the control signal.
- Step 123 The second controller 32 receives the control signal.
- Step 123 The first controller 31 obtains the first control command according to the control signal.
- Step 125 The second controller 32 obtains the second control command according to the control signal.
- Step 126 The second controller 32 performs display control on the second display area 142 based on the second control command.
- Step 127 After obtaining the control signal, the first controller 31 delays for a second period of time, and then controls the display of the first display area 141 based on the first control command.
- the second duration is the time difference between the time when the second controller 32 receives the control signal and the time when the first controller 31 receives the control signal.
- the length of the signal line from the driving circuit 33 to the first controller 31 and the length of the signal line from the driving circuit 33 to the second controller 32 in the above method are the same.
- control signal is used to control the display screen 14 to turn on or off.
- the control signal includes a compensation signal, which may be used to compensate the threshold voltage and/or mobility of the transistors in the first display area 141 and the second display area 142 .
- Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) having computer program instructions stored therein, and the computer program instructions are displayed on a computer (e.g., display screen) When running on the device), the computer is caused to execute the signal synchronization method of the display device as described in any of the above embodiments.
- a computer-readable storage medium e.g., a non-transitory computer-readable storage medium
- the computer program instructions are displayed on a computer (e.g., display screen)
- the computer When running on the device), the computer is caused to execute the signal synchronization method of the display device as described in any of the above embodiments.
- the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (such as hard disks, floppy disks or tapes, etc.), optical disks (such as CD (Compact Disk, compressed disk), DVD (Digital Versatile Disk, etc.) Digital versatile disk), etc.), smart cards and flash memory devices (e.g., EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), cards, sticks or key drives, etc.).
- the various computer-readable storage media described in this disclosure may represent one or more devices and/or other machine-readable storage media for storing information.
- the term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
- Some embodiments of the present disclosure also provide a computer program product, for example, the computer program product is stored on a non-transitory computer-readable storage medium.
- the computer program product includes computer program instructions.
- the computer program instructions When the computer program instructions are executed on a computer (eg, a display device), the computer program instructions cause the computer to perform the signal synchronization method of the display device as described in the above embodiment.
- Some embodiments of the present disclosure also provide a computer program.
- the computer program When the computer program is executed on a computer (for example, a display device), the computer program causes the computer to perform the signal synchronization method of the display device as described in the above embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
一种显示装置,包括:显示屏、驱动电路、第一控制器和第二控制器。显示屏包括第一显示区域和第二显示区域。驱动电路,被配置为向第一控制器和/或第二控制器发送控制信号。第一控制器,被配置为:响应于控制信号,对第一显示区域进行显示控制。第二控制器,被配置为:响应于控制信号,对第二显示区域进行显示控制。其中,第一显示区域和第二显示区域的显示时间差小于阈值时间。
Description
本公开涉及显示技术领域,尤其涉及一种显示装置及其信号同步方法、像素电路。
随着电子应用技术领域的发展,对于可编程阵列逻辑(Field Programmable Gate Array,FPGA)的容量、性能和速度都提出了新的挑战。单个FPGA可能无法满足复杂***的需求,因而需要采用多个FPGA对一些庞大或复杂的***实现控制。例如,对于一些超大尺寸的有机电致发光二极管(Organic Light-Emitting Diode,OLED)产品来说,一般会采用多个FPGA对该超大尺寸的OLED产品的不同显示区域分别进行控制。
发明内容
一方面,提供一种显示装置,包括:显示屏、驱动电路、第一控制器和第二控制器。所述显示屏包括第一显示区域和第二显示区域。所述驱动电路,被配置为向第一控制器和/或第二控制器发送控制信号。所述第一控制器,被配置为:响应于该控制信号,对第一显示区域进行显示控制;所述第二控制器,被配置为:响应于该控制信号,对第二显示区域进行显示控制。其中,第一显示区域和第二显示区域的显示时间差小于阈值时间。
在一些实施例中,所述第一控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第一控制命令,并向第二控制器发送第一控制命令;第一控制器从向第二控制器发送第一控制命令起,延迟第一时长后,基于第一控制命令,对第一显示区域进行显示控制;其中,第一时长为第一控制器向第二控制器发送第一控制命令到第二控制器接收后得到第一控制命令的时间。所述第二控制器,被配置为:接收第一控制命令,并基于第一控制命令,对第二显示区域进行显示控制。
在一些实施例中,第一控制器为主控制器,第二控制器为从控制器。
在一些实施例中,所述第一控制器,被配置为:接收控制信号,根据该控制信号,得到第一控制命令,并向第二控制器发送第一控制命令。所述第二控制器,被配置为:接收控制信号,根据该控制信号,得到第二控制命令,并向第一控制器发送第二控制命令。所述第一控制器,还被配置为:接收第二控制命令,并基于第一控制命令和第二控制命令得到第三控制命令;根据 第三控制命令,对第一显示区域进行显示控制。所述第二控制器,还被配置为:接收第一控制命令,并基于第一控制命令和第二控制命令得到第四控制命令;根据第四控制命令,对第二显示区域进行显示控制。
在一些实施例中,第三控制命令和第四控制命令相同,或,第三控制命令和第四控制命令的信号重叠率大于99%。
在一些实施例中,所述第一控制器,还被配置为:对第一控制命令和第二控制命令进行与运算,得到第三控制命令。所述第二控制器,还被配置为:对第一控制命令和第二控制命令进行与运算,得到第四控制命令。
在一些实施例中,第一控制器和第二控制器之间通过低电压差分信号LVDS或管脚pin to pin传输第一控制命令和/或第二控制命令。
在一些实施例中,所述第二控制器,被配置为:接收控制信号,根据该控制信号,得到第二控制命令;并基于第二控制命令,对第二显示区域进行显示控制。所述第一控制器,被配置为:接收控制信号,根据所述控制信号,得到第一控制命令;第一控制器从得到控制信号起延迟第二时长后,基于第一控制命令,对第一显示区域进行显示控制;其中,第二时长为第二控制器接收所述控制信号的时间与第一控制器接收所述控制信号的时间的时间差。
在一些实施例中,驱动电路至第一控制器的信号线与驱动电路至第二控制器的信号线的长度相同。
在一些实施例中,控制信号用于控制显示屏点亮或熄灭。该控制信号包括补偿信号,该补偿信号用于补偿第一显示区域和第二显示区域的晶体管的阈值电压和/或迁移率。
在一些实施例中,阈值时间小于14.4微秒。
另一方面,提供一种像素电路,应用于显示屏,该显示屏包括第一显示区域和第二显示区域。第一显示区域的像素电路和第二显示区域的像素电路用于接收补偿信号,该补偿信号用于补偿第一显示区域和第二显示区域的像素电路中晶体管的阈值电压和/或迁移率,以使第一显示区域和第二显示区域的显示时间差小于阈值时间。
在一些实施例中,阈值时间小于14.4微秒。
又一方面,提供一种显示装置的信号同步方法,该显示装置包括显示屏、第一控制器和第二控制器。显示屏包括第一显示区域和第二显示区域,第一控制器用于控制所述第一显示区域,第二控制器用于控制所述第二显示区域。该信号同步方法包括:第一控制器和/或第二控制器接收来自驱动电 路的控制信号;所述第一控制器响应于该控制信号,对第一显示区域进行显示控制;所述第二控制器响应于该控制信号,对第二显示区域进行显示控制;其中,第一显示区域和第二显示区域的显示时间差小于阈值时间。
在一些实施例中,当第一控制器接收来自驱动电路的控制信号时,所述方法还包括:第一控制器根据该控制信号,得到第一控制命令,并向第二控制器发送第一控制命令;第二控制器接收来自第一控制器的第一控制命令,并基于第一控制命令,对第二显示区域进行显示控制;其中,第一控制器对第一显示区域进行显示控制,包括:第一控制器从向第二控制器发送第一控制命令起,延迟第一时长后,基于第一控制命令,对第一显示区域进行显示控制;第一时长为第一控制器向第二控制器发送第一控制命令到第二控制器接收后得到第一控制命令的时间。
在一些实施例中,当第一控制器和第二控制器接收来自驱动电路的控制信号时,所述方法还包括:第一控制器根据控制信号,得到第一控制命令,并向第二控制器发送第一控制命令;第二控制器根据控制信号,得到第二控制命令,并向第一控制器发送第二控制命令;第一控制器接收第二控制命令;第二控制器接收第一控制命令;其中,第一控制器对第一显示区域进行显示控制,包括:第一控制器基于第一控制命令和第二控制命令得到第三控制命令;根据第三控制命令,对第一显示区域进行显示控制;第二控制器对第二显示区域进行显示控制,包括:第二控制器基于第一控制命令和第二控制命令得到第四控制命令;根据第四控制命令,对第二显示区域进行显示控制。
在一些实施例中,第三控制命令和第四控制命令相同,或,第三控制命令和第四控制命令的信号重叠率大于99%。
在一些实施例中,基于第一控制命令和第二控制命令得到第三控制命令,包括:对第一控制命令和第二控制命令进行与运算,得到第三控制命令。
在一些实施例中,当第一控制器和第二控制器接收来自驱动电路的控制信号时,所述方法还包括:第二控制器根据控制信号,得到第二控制命令;并基于第二控制命令,对第二显示区域进行显示控制;第一控制器根据控制信号,得到第一控制命令;其中,第一控制器对第一显示区域进行显示控制,包括:第一控制器从得到控制信号起延迟第二时长后,基于第一控制命令,对第一显示区域进行显示控制;第二时长为所第二控制器接收控制信号的时间与第一控制器接收到控制信号的时间的时间差。
在一些实施例中,控制信号用于控制显示屏点亮或熄灭。控制信号包括补偿信号,该补偿信号用于补偿第一显示区域和第二显示区域的晶体管的阈值电压和/或迁移率。
在一些实施例中,阈值时间小于14.4微秒。
为了更清楚地说明本公开中的技术方案,下面将对本公开一些实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例的附图,对于本领域普通技术人员来讲,还可以根据这些附图获得其他的附图。此外,以下描述中的附图可以视作示意图,并非对本公开实施例所涉及的产品的实际尺寸、方法的实际流程、信号的实际时序等的限制。
图1为根据一些实施例的一种显示装置的结构图;
图2为根据一些实施例的一种FPGA接收关机补偿信号的示意图;
图3A为根据一些实施例的另一种显示装置的结构图;
图3B为根据一些实施例的一种像素电路的示意图;
图4为根据一些实施例的又一种显示装置的结构图;
图5为根据一些实施例的一种生成第三关机补偿命令和第四关机补偿命令的示意图;
图6为根据一些实施例的另一种显示装置的结构图;
图7为根据一些实施例的另一种显示装置的结构图;
图8为根据一些实施例的一种多个控制器接收关机补偿信号存在时间差的示意图;
图9为根据一些实施例的一种多个控制器同步接收关机补偿信号的示意图;
图10为根据一些实施例的一种显示装置的信号同步方法的流程图;
图11为根据一些实施例的另一种显示装置的信号同步方法的流程图;
图12为根据一些实施例的又一种显示装置的信号同步方法的流程图。
下面将结合附图,对本公开一些实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实 施例。基于本公开所提供的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本公开保护的范围。
除非上下文另有要求,否则,在整个说明书和权利要求书中,术语“包括(comprise)”及其其他形式例如第三人称单数形式“包括(comprises)”和现在分词形式“包括(comprising)”被解释为开放、包含的意思,即为“包含,但不限于”。在说明书的描述中,术语“一个实施例(one embodiment)”、“一些实施例(some embodiments)”、“示例性实施例(exemplary embodiments)”、“示例(example)”、“特定示例(specific example)”或“一些示例(some examples)”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本公开的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外,所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。
以下,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开实施例的描述中,除非另有说明,“多个”的含义是两个或两个以上。
在描述一些实施例时,可能使用了“耦接”和“连接”及其衍伸的表达。例如,描述一些实施例时可能使用了术语“连接”以表明两个或两个以上部件彼此间有直接物理接触或电接触。又如,描述一些实施例时可能使用了术语“耦接”以表明两个或两个以上部件有直接物理接触或电接触。然而,术语“耦接”或“通信耦合(communicatively coupled)”也可能指两个或两个以上部件彼此间并无直接接触,但仍彼此协作或相互作用。这里所公开的实施例并不必然限制于本文内容。
“A、B和C中的至少一个”与“A、B或C中的至少一个”具有相同含义,均包括以下A、B和C的组合:仅A,仅B,仅C,A和B的组合,A和C的组合,B和C的组合,及A、B和C的组合。
“A和/或B”,包括以下三种组合:仅A,仅B,及A和B的组合。
如本文中所使用,根据上下文,术语“如果”任选地被解释为意思是“当……时”或“在……时”或“响应于确定”或“响应于检测到”。类似地,根据上下文,短语“如果确定……”或“如果检测到[所陈述的条件或事件]”任选地被解释为是指“在确定……时”或“响应于确定……”或“在检测到[所陈述的条件或事件]时”或“响应于检测到[所陈述的条件或事件]”。
本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言,其不排 除适用于或被配置为执行额外任务或步骤的设备。
另外,“基于”的使用意味着开放和包容性,因为“基于”一个或多个所述条件或值的过程、步骤、计算或其他动作在实践中可以基于额外条件或超出所述的值。
如本文所使用的那样,“约”、“大致”或“近似”包括所阐述的值以及处于特定值的可接受偏差范围内的平均值,其中所述可接受偏差范围如由本领域普通技术人员考虑到正在讨论的测量以及与特定量的测量相关的误差(即,测量***的局限性)所确定。
通常,对于一些***复杂或尺寸较大的显示装置来说,如果采用单个FPGA,一方面,对该FPGA的性能和容量等参数的要求非常高,因而会产生较大的成本,从***成本考虑不划算;另一方面,随着电子领域的发展,单个FPGA已经无法适用于庞大或复杂的***,因而,会采用多个FPGA对显示装置进行控制。
图1为一种显示装置10的结构图。如图1所示,显示装置10包括FPGA 11、FPGA 12、屏驱动板(Time Control Register,TCON)13和显示屏14。FPGA 11被配置为对显示屏14的右半屏进行显示控制,FPGA 12被配置为对显示屏14的左半屏进行显示控制。
TOCN板13被配置为向FPGA 11和FPGA 12发送控制信号,该控制信号例如为控制显示屏14熄灭的关机补偿信号。当TOCN板13分别向FPGA 11和FPGA 12发送该关机补偿信号时,FPGA 11和FPGA 12接收该关机补偿信号,并对该关机补偿信号进行处理,产生对应的关机补偿命令(如Sense Vth和Sense K等)。FPGA 11和FPGA 12再根据各自产生的关机补偿命令分别控制显示屏14的右半屏和左半屏中发光元件熄灭。
但是,由于TCON板13到FPGA 11和FPGA 12的走线不同,即TCON板13到FPGA 11的信号线131与TCON板13到FPGA 12的信号线132的长度不同。因此,FPGA 11接收关机补偿信号的时间与FPGA 12接收关机补偿信号的时间不一致,故FPGA 11控制显示屏14的右半屏熄灭的时间与FPGA 12控制显示屏14的左半边屏熄灭的时间就会不同步,从而造成显示屏14出现左右分屏的现象。
例如,如图1所示,TCON板13到FPGA 11的信号线131长度短于TCON板13到FPGA 12的信号线132的长度,因而,如图2所示,FPGA 12接收到TCON板13发送的关机补偿信号22的时间t2晚于FPGA 11接收到TCON板13发送的关机补偿信号21的时间t1。
为此,本公开一些实施例提供一种显示装置,该显示装置能够确保多个控制器同时控制显示屏中相应显示区域的发光元件点亮或熄灭,使得显示屏不会出现分屏的问题。
图3A为本公开一些实施例提供的显示装置30。显示装置30可以为OLED显示装置、量子点电致发光二极管(Quantum Dot Light Emitting Diodes,QLED)显示装置或有源矩阵有机发光二极管(Active-matrix Organic Light Emitting Diode,AMOLED)显示装置。本公开实施例对显示装置30的类型不作特殊限定。
如图3A所示,显示装置30包括显示屏14、驱动电路33和多个控制器。多个控制器包括但不限于FPGA、专用集成电路(Application Specific Integrated Circuit,ASIC)等集成电路中的至少一项。
示例性地,多个控制器包括第一控制器31和第二控制器32。其中,第一控制器31可以为FPGA或ASIC,第二控制器32也可以为FPGA或ASIC。第一控制器31和第二控制器32的类型可以相同,也可以不同,本公开实施例对多个控制器的数量和类型不作限定。
显示屏14,包括多个显示区域,该多个显示区域互不重合,每个显示区域包括多个发光元件。多个显示区域例如可以包括第一显示区域141和第二显示区域142,第一显示区域141和第二显示区域142可以组成显示屏14的全部显示区域,也可以组成显示屏14的部分显示区域。本公开实施例对于显示屏14划分的显示区域的数量不作限定。
示例性地,第一控制器31用于对第一显示区域141进行显示控制,第二控制器32用于对第二显示区域142进行显示控制。例如,第一控制器31用于控制第一显示区域141中发光元件的点亮或熄灭;第二控制器32用于控制第二显示区域142中发光元件的点亮或熄灭。
驱动电路33,例如可以为屏驱动板,也可以为拨码、按键或其他类型的驱动电路。驱动电路33被配置为向第一控制器31和/或第二控制器32发送控制信号。对第一控制器31和第二控制器32而言,驱动电路33发送的控制信号为外部控制信号。
在一些实施例中,驱动电路33发送的控制信号用于控制显示屏14点亮或熄灭。例如,控制信号可以包括关机补偿信号和/或开机补偿信号。
显示屏14可以包括阵列排布的多个子像素,每个子像素包括发光元件OLED和像素电路。图3B为本公开实施例提供的一种像素电路的示意图, 该像素电路例如可以为3T1C像素电路。
如图3B所示,该像素电路包括:第一晶体管361、第二晶体管362、第三晶体管363和电容Cst,第一晶体管361的控制端耦接至栅极驱动信号线SCAN1,第一晶体管361的第一端耦接至数据信号端DATA,第一晶体管361的第二端耦接至第一节点N1。第二晶体管362的控制端耦接至栅极驱动信号线SCAN2,第二晶体管362的第一端耦接至第二节点N2,第二晶体管362的第二端耦接至感测端SENSE。第三晶体管363的控制端耦接至第一节点N1,第三晶体管363的第一端耦接至电压端Vdd,第三晶体管363的第二端耦接至第二节点N2。电容器Cst的第一端耦接至第一节点N1,电容器Cst的第二端耦接至第二节点N2。发光元件OLED的第一端耦接至第二节点N2,发光元件OLED的第二端耦接至电压端Vss。栅极驱动信号线SCAN1和栅极驱动信号线SCAN2的信号可以相同,也可以不同,本公开实施例对此并不限定。
如图3B所示,由于像素电路中晶体管(比如,第三晶体管363)的阈值电压和/或迁移率不同,可能导致显示屏14出现亮度不均等问题。
在一些实施例中,为了改善因不同像素电路中晶体管的阈值电压和/或迁移率不同,造成显示屏14亮度不均等问题,本公开实施例中的控制信号包括补偿信号,该补偿信号用于补偿第一显示区域141和第二显示区域142中的晶体管的阈值电压和/或迁移率。因此,能够改善显示屏14出现的显示亮度不均的问题,提高显示屏14的显示质量。示例性地,该补偿信号可以为Sense Vth和/或Sense K,本公开实施例对补偿信号的类型不作限定。
第一控制器31,被配置为:响应于控制信号,对第一显示区域141进行显示控制。第二控制器32,被配置为:响应于控制信号,对第二显示区域142进行显示控制。其中,第一显示区域141和第二显示区域142的显示时间差小于阈值时间。
当第一显示区域141和第二显示区域142同时显示,或显示时间差较小(比如:小于阈值时间)时,能够改善显示屏14出现分屏现象的问题。在一些实施例中,阈值时间可以小于14.4微秒。例如,阈值时间可以为10微秒、5微秒、3微秒或其他小于14.4微秒的数值。本公开实施例对阈值时间的数值不作限定。也就是说,当第一显示区域141和第二显示区域142的显示时间差小于10微秒或5微秒或3微秒时,用户感知不到显示屏14出现的 分屏现象。阈值时间也可以为0微秒,当阈值时间为0微秒时,第一显示区域141和第二显示区域142的显示时间达到完全同步,因而显示屏14不会出现分屏现象。同时,本公开实施例提供的显示装置还可以通过补偿信号对晶体管的阈值电压和/或迁移率进行补偿,改善显示屏14亮度显示不均的问题,提高显示屏14的显示质量。
在一些实施例中,如图3A所示,驱动电路33与第一控制器31耦接,且被配置为:向第一控制器31发送控制信号。
第一控制器31,与第二控制器32耦接,且被配置为:接收来自驱动电路33的控制信号,根据该控制信号,得到第一控制命令,并向第二控制器32发送第一控制命令。
在一些实施例中,第一控制器31可以为主控制器,第二控制器可以为从控制器。示例性地,主控制器可以是显示装置30中预设的。显示装置30包括的主控制器和从控制器的个数可以分别为一个,也可以分别为多个,本公开实施例对显示装置30包括的主控制器和从控制器的数量不作限定。
如图3A所示,以控制信号为关机补偿信号为例,驱动电路33向第一控制器31发送关机补偿信号,当第一控制器31接收到该关机补偿信号后,通过对该关机补偿信号进行逻辑处理后生成对应的第一控制命令,并向第二控制器32发送该第一关机补偿命令。
在一些实施例中,第一控制器31通过低电压差分信号(Low-Voltage Differential Signaling,LVDS)或管脚pin to pin向第二控制器32传输第一控制命令。本公开实施例对第一控制器31与第二控制器32之间的传输方式不作限定。
第二控制器32,被配置为:接收第一控制命令,并基于第一控制命令,对第二显示区域142进行显示控制。
如图3A所示,当第二控制器32接收到第一控制器31发送的第一关机补偿命令后,基于该第一关机补偿命令,对第二显示区域142进行显示控制,控制第二显示区域142中发光器件熄灭。
第一控制器31,还被配置为:从向第二控制器32发送第一控制命令起,延迟第一时长后,基于第一控制命令,对第一显示区域141进行显示控制。其中,第一时长为第一控制器31向第二控制器32发送第一控制命令的时间至第二控制器32接收后得到第一控制命令的时间。
如图3A所示,当第一控制器31向第二控制器32发送第一关机补偿命令后,需要等待第一时长,再控制第一显示区域141中发光器件熄灭。
示例性地,当第一控制器31通过LVDS向第二控制器32传输第一控制命令时,第一控制器31会对第一控制命令进行数据打包、编码等处理,然后将处理后的第一控制命令通过LVDS TX传输给第二控制器32。第二控制器32通过LVDS RX接收该处理后的第一控制命令,并对该处理后的控制命令进行解码处理,选取出所需要的第一控制命令。此时,第一时长的时间包括第一控制器31的LVDS TX发送、第二控制器32的LVDS RX接收以及解码、选取第一控制命令等处理过程的耗时,将该耗时的时长可以记为ΔT1(如,ΔT1大于零)。可以理解地,ΔT1可以通过提前的测试获取到。
因而,在第一控制器31通过LDVS向第二控制器32传输第一控制命令的情况下,从第一控制器31向第二控制器32发送第一控制命令起到第二控制器32接收后得到第一控制命令需要的时长为ΔT1,故第一控制器31等待ΔT1后再对第一显示区域141进行显示控制的时间,与第二控制器32得到第一控制命令后对第二显示区域142进行显示控制的时间相同。即第一显示区域141和第二显示区域142的显示控制是同步的,因此显示屏14不会出现分屏现象。
示例性地,当第一控制器31通过pin to pin向第二控制器32传输第一控制命令时,第一控制器31直接通过芯片管脚将第一控制命令发送给第二控制器32,pin to pin传输过程的耗时非常小,一般情况下可以忽略不计。即,当第一控制器31通过pin to pin向第二控制器32发送第一控制命令时,该过程的耗时ΔT1约为零。那么,第一控制器31在发送第一控制命令后,就可以对第一显示区域141进行显示控制,第二控制器32在接收到第一控制命令后,根据第一控制命令对第二显示区域142进行显示控制,从而实现第一显示区域141和第二显示区域142的显示时间差小于阈值时间,解决了显示屏14的分屏问题。
为了进一步确保显示屏14不会出现分屏,在一些实施例中,还提供一种显示装置40,如图4所示,该显示装置40与图3A所示的显示装置30的区别在于图4中驱动电路33与第二控制器32耦接。下面对图4所示的显示装置40的电路功能进行介绍。
在一些实施例中,如图4所示,第一控制器31可以为主控制器或从控 制器,第二控制器32也可以为主控制器或从控制器。
驱动电路33,被配置为:分别向第一控制器31和第二控制器32发送控制信号。第一控制器31,被配置为:接收该控制信号,并基于该控制信号生成第一控制命令,向第二控制器32发送该第一控制命令。第二控制器32,被配置为:接收该控制信号,并基于该控制信号生成第二控制命令,向第一控制器31发送该第二控制命令。
如图4所示,以控制信号为关机补偿信号为例,驱动电路33通过信号线331向第一控制器31发送关机补偿信号,同时通过信号线332向第二控制器32发送该关机补偿信号。第一控制器31和第二控制器32在接收到该关机补偿信号后,各自生成对应的第一关机补偿命令和第二关机补偿命令。第一控制器31向第二控制器32发送第一关机补偿命令,第二控制器32向第一控制器31发送第二关机补偿命令。
第一控制器31,还被配置为:接收第二控制命令,并基于第一控制命令和第二控制命令得到第三控制命令;根据第三控制命令,对第一显示区域141进行显示控制。第二控制器32,还被配置为:接收第一控制命令,并基于第一控制命令和第二控制命令得到第四控制命令;根据第四控制命令,对第二显示区域142进行显示控制。
在一些实施例中,第三控制命令和第四控制命令相同,或者,第三控制命令和第四控制命令的信号重叠率大于99%。也就是说,当第三控制命令和第四控制命令相同,或者信号重叠率大于99%时,第一显示区域141和第二显示区域142的显示时间差小于阈值时间,因而,显示屏14不会出现分屏现象。
如图4所示,第一控制器31通过信号线311向第二控制器32发送第一关机补偿命令,第二控制器32通过信号线321向第一控制器31发送第二关机补偿命令。在一些实施例中,第一控制器31可以采用同一信号线发送第一关机补偿命令并接收第二关机补偿命令,也可以采用不同的信号线分别发送第一关机补偿命令和接收第二关机补偿命令。即信号线311与信号线321可以是同一信号线,也可以是不同的信号线。信号线311和信号线321可以是第一控制器31和第二控制器32芯片管脚之间的走线,也可以是第一控制器31的LDVS TX/RX与第二控制器32的LVDS RX/TX之间的走线。
在一些实施例中,第三控制命令包括第一控制器31对第一控制命令和第二控制命令进行与运算得到的控制命令。第四控制命令包括第二控制器32 对第一控制命令和第二控制命令进行与运算得到的控制命令。
本公开实施例对第一控制器31和第二控制器32接收驱动电路33发送的控制信号的时间先后不做限定。下面以第一控制器31早于第一控制器31接收到驱动电路33发送的控制信号为例进行示例性说明。如图5所示,第一控制器31接收到第二控制器32发送的第二关机补偿命令52,并将第一关机补偿命令51和第二关机补偿命令52进行与运算,得到第三关机补偿命令54。第一控制器31根据第三关机补偿命令54控制第一显示区域141中发光器件熄灭。第二控制器32接收到第一控制器31发送的第一关机补偿命令51,将第一关机补偿命令51和第二关机补偿命令52进行与运算,得到第四关机补偿命令55。第二控制器32根据第四关机补偿命令55控制第二显示区域142中发光器件熄灭。如图5所示,第三关机补偿命令54和第四关机补偿命令55相同。
需要说明的是,由于第一控制器31与第二控制器32之间传输第一关机补偿命令51和第二关机补偿命令52的时长相同。因此,第一控制器31和第二控制器32之间进行“握手”操作后,能够抵消第一控制器31与第二控制器32接收来自驱动电路33的关机补偿信号的时间差,从而使得显示装置40中第一控制器31和第二控制器32进行显示控制的第三关机补偿命令54和第四控制命令55相同或者信号重叠率大于99%。因此,第一控制器31和第二控制器32在分别基于第三关机补偿命令54和第四关机补偿命令55控制第一显示区域141和第二显示区域142中发光元件的熄灭时,能够保证第一显示区域141和第二显示区域142的显示时间差小于阈值时间,解决了显示屏14的分屏问题。同时,通过第一控制器31和第二控制器32之间进行“握手”操作,也能够避免驱动电路33与第一控制器31或第二控制器32之间出现传输异常造成显示屏14分屏的问题,也能避免第一控制器31与第二控制器32之间出现传输异常造成显示屏14分屏的问题。
在一些实施例中,如图6所示,驱动电路33至第一控制器31的信号线331与驱动电路33至第二控制器32的信号线332的长度相同。
如图6所示,以控制信号为关机补偿信号为例,驱动电路33通过信号线331向第一控制器31发送关机补偿信号,同时通过信号线332向第二控制器32发送该关机补偿信号。由于驱动电路33到第一控制器31的信号线331和驱动电路33到第二控制器32的信号线332的长度相同,驱动电路33发出的关机补偿信号达到第一控制器31和第二控制器32的时间相同,因此能 够实现第一控制器31和第二控制器32分别对第一显示区域141和第二显示区域142进行同步控制,避免显示屏14出现分屏。
为了进一步减小显示装置的设计难度和制作成本,确保显示屏14不会出现分屏,在一些实施例中,还提供一种显示装置70,下面以显示装置70中驱动电路33到第一控制器31的信号线331的长度短于驱动电路33到第二控制器32的信号线332的长度为例,对图7所示的显示装置70的电路功能进行介绍。
驱动电路33,与第一控制器31和第二控制器32耦接,且被配置为:分别向第一控制器31和第二控制器32发送控制信号。
第二控制器32,被配置为:接收该控制信号,根据该控制信号,得到第二控制命令;并基于第二控制命令,对第二显示区域142进行显示控制。
第一控制器31,被配置为:接收该控制信号,根据该控制信号,得到第一控制命令;从得到该控制信号起延迟第二时长后,基于第一控制命令,对第一显示区域141进行显示控制。其中,第二时长为第二控制器32接收该控制信号的时间与第一控制器31接收该控制信号的时间的时间差。
示例性地,如图7所示,由于驱动电路33到第一控制器31的信号线331的长度短于驱动电路33到第二控制器32的信号线332的长度,故第一控制器31接收关机补偿信号的时间早于第二控制器32接收关机补偿信号的时间。因而,当第一控制器31接收到该关机补偿信号后等待第二时长ΔT2后,也就是第一控制器31等到第二控制器32也接收到驱动电路33发送的关机补偿信号后,第一控制器31再基于第一关机补偿命令控制第一显示区域141中发光元件熄灭的时间,与第二控制器32通过第二关机控制命令控制显示区域142中发光元件熄灭的时间保持同步。
示例性地,第二时长ΔT2可以提前通过测试获得。例如可以提前测量第一控制器31接收来自驱动电路33的关机补偿信号的时间T1和第二控制器32接收来自驱动电路33的关机补偿信号的时间T2,计算时间差ΔT2,ΔT2=T2-T1。ΔT2的大小与信号线331和信号线332的长度有关。
如图8所示,以测试得到的ΔT2为14.4微秒为例,第一控制器31在t3时刻接收到驱动电路33发送的关机补偿信号,第二控制器32在t4时刻接收到驱动电路33发送的关机补偿信号。如图9所示,第一控制器31在t3时刻接收关机补偿信号后等待14.4微秒后,再控制第一显示区域141中发 光元件熄灭,即第一控制器31在t4时刻控制第一显示区域141中发光元件熄灭。第二控制器32在t4时刻接收关机补偿信号后直接控制第二显示区域142中发光元件熄灭,因此第一控制器31控制第一显示区域141熄灭的时间与第二控制器32控制第二显示区域142熄灭的时间相同,解决了显示屏14的分屏问题。
本公开一些实施例提供一种像素电路,该像素电路应用于显示屏,该显示屏例如可以为上述实施例中的显示屏14。显示屏14包括第一显示区域141和第二显示区域142。第一显示区域141的像素电路和第二显示区域142的像素电路用于接收补偿信号,该补偿信号用于补偿第一显示区域141和第二显示区域142的像素电路中晶体管的阈值电压和/或迁移率,以使第一显示区域141和第二显示区域142的显示时间差小于阈值时间。
上述第一显示区域141的像素电路和第二显示区域142的像素电路可以相同,也可以不同。例如,第一显示区域141的像素电路和第二显示区域142的像素电路都可以为图3B中所示的像素电路。该像素电路接收的补偿信号,例如可以是上述实施例中的Sense Vth和/或Sense K。该补偿信号Sense Vth和/或Sense K能够补偿第一显示区域141和第二显示区域142的像素电路中晶体管的阈值电压和/或迁移率,使得第一显示区域141和第二显示区域142的显示时间差小于阈值时间,该阈值时间例如小于14.4微秒,从而保证显示屏14不会出现分屏现象。
本公开一些实施例提供一种显示装置的信号同步方法。在一些实施例中,如图10所示,显示装置30的信号同步方法包括步骤101至步骤107。
步骤101,驱动电路33向第一控制器31发送控制信号。
步骤102,第一控制器31接收该控制信号。
步骤103,第一控制器31根据该控制信号,得到第一控制命令。
步骤104,第一控制器31向第二控制器32发送第一控制命令。
步骤105,第二控制器32接收第一控制命令。
步骤106,第二控制器32基于第一控制命令,对第二显示区域142进行显示控制。
步骤107,第一控制器31从向第二控制器32发送第一控制命令起,延迟第一时长后,基于第一控制命令,对第一显示区域141进行显示控制。
示例性地,第一时长为第一控制器31向第二控制器32发送第一控制命令到第二控制器32接收后得到第一控制命令的时间。
在一些实施例中,第一控制器31为主控制器,第二控制器32为从控制器。
在一些实施例中,如图11所示,显示装置40的信号同步方法包括步骤1111至步骤1123。
步骤1111,驱动电路33分别向第一控制器31和第二控制器32发送控制信号。
步骤1112,第一控制器31接收该控制信号。
步骤1113,第二控制器32接收该控制信号。
步骤1114,第一控制器31根据该控制信号,得到第一控制命令。
步骤1115,第二控制器32根据该控制信号,得到第二控制命令。
步骤1116,第一控制器31向第二控制器32发送第一控制命令。
步骤1117,第二控制器32接收第一控制命令。
步骤1118,第二控制器32向第一控制器31发送第二控制命令。
步骤1119,第一控制器31接收第二控制命令。
步骤1120,第一控制器31基于第一控制命令和第二控制命令得到第三控制命令。
步骤1121,第一控制器31基于第三控制命令,对第一显示区域141进行显示控制。
步骤1122,第二控制器32基于第一控制命令和第二控制命令得到第四控制命令。
步骤1123,第二控制器32基于第四控制命令,对第二显示区域142进行显示控制。
本公开实施例对上述步骤1111至步骤1123的执行顺序不作限定,例如,步骤1116可以在步骤1118之前执行,也可以在步骤1118之后执行,也可以和步骤1118同时执行。
在一些实施例中,第三控制命令和第四控制命令可以是相同的,或者第三控制命令和第四控制命令的信号重叠率大于99%。
在一些实施例中,上述方法中第一控制器31基于第一控制命令和第二控制命令得到第三控制命令,包括:对第一控制命令和第二控制命令进行与运算,得到第三控制命令。
上述方法中第二控制器32基于第一控制命令和第二控制命令得到第四 控制命令,包括:对第一控制命令和第二控制命令进行与运算,得到第四控制命令。
在一些实施例中,第一控制器31和第二控制器32之间通过低电压差分信号LVDS或管脚pin to pin传输第一控制命令和/或第二控制命令。
在一些实施例中,如图12所示,显示装置70的信号同步方法包括步骤121至步骤127。
步骤121,驱动电路33分别向第一控制器31和第二控制器32发送控制信号。
步骤122,第一控制器31接收该控制信号。
步骤123,第二控制器32接收该控制信号。
步骤123,第一控制器31根据该控制信号,得到第一控制命令。
步骤125,第二控制器32根据该控制信号,得到第二控制命令。
步骤126,第二控制器32基于第二控制命令,对第二显示区域142进行显示控制。
步骤127,第一控制器31从得到该控制信号起,延迟第二时长后,基于第一控制命令,对第一显示区域141进行显示控制。
示例性地,第二时长为第二控制器32接收该控制信号的时间与第一控制器31接收该控制信号的时间的时间差。
在一些实施例中,上述方法中的驱动电路33至第一控制器31的信号线与驱动电路33至第二控制器32的信号线的长度相同。
在一些实施例中,控制信号用于控制显示屏14的点亮或熄灭。控制信号包括补偿信号,该补偿信号可以用于补偿第一显示区域141和第二显示区域142中晶体管的阈值电压和/或迁移率。
本公开的一些实施例提供了一种计算机可读存储介质(例如,非暂态计算机可读存储介质),该计算机可读存储介质中存储有计算机程序指令,计算机程序指令在计算机(例如,显示装置)上运行时,使得计算机执行如上述实施例中任一实施例所述的显示装置的信号同步方法。
示例性的,上述计算机可读存储介质可以包括,但不限于:磁存储器件(例如,硬盘、软盘或磁带等),光盘(例如,CD(Compact Disk,压缩盘)、DVD(Digital Versatile Disk,数字通用盘)等),智能卡和闪存器件(例如,EPROM(Erasable Programmable Read-Only Memory,可擦写可编程只读存储器)、卡、棒或钥匙驱动器等)。本公开描述的各种计算机可读存储介质可 代表用于存储信息的一个或多个设备和/或其它机器可读存储介质。术语“机器可读存储介质”可包括但不限于,无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
本公开的一些实施例还提供了一种计算机程序产品,例如,该计算机程序产品存储在非瞬时性的计算机可读存储介质上。该计算机程序产品包括计算机程序指令,在计算机(例如,显示装置)上执行该计算机程序指令时,该计算机程序指令使计算机执行如上述实施例所述的显示装置的信号同步方法。
本公开的一些实施例还提供了一种计算机程序。当该计算机程序在计算机(例如,显示装置)上执行时,该计算机程序使计算机执行如上述实施例所述的显示装置的信号同步方法。
上述计算机可读存储介质、计算机程序产品及计算机程序的有益效果和上述一些实施例所述的显示装置的信号同步方法的有益效果相同,此处不再赘述。
以上所述,仅为本公开的具体实施方式,但本公开的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本公开揭露的技术范围内,想到变化或替换,都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以所述权利要求的保护范围为准。
Claims (21)
- 一种显示装置,包括:显示屏,包括第一显示区域和第二显示区域;驱动电路,被配置为向第一控制器和/或第二控制器发送控制信号;所述第一控制器,被配置为:响应于所述控制信号,对所述第一显示区域进行显示控制;所述第二控制器,被配置为:响应于所述控制信号,对所述第二显示区域进行显示控制;其中,所述第一显示区域和所述第二显示区域的显示时间差小于阈值时间。
- 根据权利要求1所述的显示装置,其中,所述第一控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第一控制命令,并向所述第二控制器发送所述第一控制命令;从向所述第二控制器发送所述第一控制命令起,延迟第一时长后,基于所述第一控制命令,对所述第一显示区域进行显示控制;其中,所述第一时长为所述第一控制器向所述第二控制器发送所述第一控制命令的时间至所述第二控制器接收后得到所述第一控制命令的时间;所述第二控制器,被配置为:接收所述第一控制命令,并基于所述第一控制命令,对所述第二显示区域进行显示控制。
- 根据权利要求2所述的显示装置,其中,所述第一控制器为主控制器,所述第二控制器为从控制器。
- 根据权利要求1所述的显示装置,其中,所述第一控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第一控制命令,并向所述第二控制器发送所述第一控制命令;所述第二控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第二控制命令,并向所述第一控制器发送所述第二控制命令;所述第一控制器,还被配置为:接收所述第二控制命令,并基于所述第一控制命令和所述第二控制命令得到第三控制命令;根据所述第三控制命令,对所述第一显示区域进行显示控制;所述第二控制器,还被配置为:接收所述第一控制命令,并基于所述第一控制命令和所述第二控制命令得到第四控制命令;根据所述第四控制命令,对所述第二显示区域进行显示控制。
- 根据权利要求4所述的显示装置,其中,所述第三控制命令和所述第四控制命令相同,或,所述第三控制命令和所述第四控制命令的信号重叠率大于99%。
- 根据权利要求4所述的显示装置,其中,所述第一控制器,还被配置为:对所述第一控制命令和所述第二控制命令进行与运算,得到所述第三控制命令;所述第二控制器,还被配置为:对所述第一控制命令和所述第二控制命令进行与运算,得到所述第四控制命令。
- 根据权利要求1-6中任一项所述的显示装置,其中,所述第一控制器和所述第二控制器之间通过低电压差分信号LVDS或管脚pin to pin传输所述第一控制命令和/或所述第二控制命令。
- 根据权利要求1所述的显示装置,其中,所述第二控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第二控制命令;并基于所述第二控制命令,对所述第二显示区域进行显示控制;所述第一控制器,被配置为:接收所述控制信号,根据所述控制信号,得到第一控制命令;从得到所述控制信号起延迟第二时长后,基于所述第一控制命令,对所述第一显示区域进行显示控制;其中,所述第二时长为所述第二控制器接收所述控制信号的时间与所述第一控制器接收所述控制信号的时间的时间差。
- 根据权利要求1-8中任一项所述的显示装置,其中,所述驱动电路至所述第一控制器的信号线与所述驱动电路至所述第二控制器的信号线长度相同。
- 根据权利要求1-9中任一项所述的显示装置,其中,所述控制信号用于控制所述显示屏点亮或熄灭;所述控制信号包括补偿信号,所述补偿信号用于补偿所述第一显示区域和所述第二显示区域的晶体管的阈值电压和/或迁移率。
- 根据权利要求1-10中任一项所述的显示装置,其中,所述阈值时间小于14.4微秒。
- 一种像素电路,应用于显示屏,所述显示屏包括第一显示区域和第二显示区域,所述第一显示区域的像素电路和所述第二显示区域的像素电路 用于接收补偿信号,所述补偿信号用于补偿所述第一显示区域和所述第二显示区域的像素电路中晶体管的阈值电压和/或迁移率,以使所述第一显示区域和所述第二显示区域的显示时间差小于阈值时间。
- 根据权利要求12中所述的像素电路,其中,所述阈值时间小于14.4微秒。
- 一种显示装置的信号同步方法,所述显示装置包括显示屏、第一控制器和第二控制器,所述显示屏包括第一显示区域和第二显示区域,所述第一控制器用于控制所述第一显示区域,所述第二控制器用于控制所述第二显示区域;所述信号同步方法包括:所述第一控制器和/或所述第二控制器接收来自驱动电路的控制信号;所述第一控制器响应于所述控制信号,对所述第一显示区域进行显示控制;所述第二控制器响应于所述控制信号,对所述第二显示区域进行显示控制;其中,所述第一显示区域和所述第二显示区域的显示时间差小于阈值时间。
- 根据权利要求14所述的信号同步方法,其中,当所述第一控制器接收来自驱动电路的控制信号时,所述方法还包括:所述第一控制器根据所述控制信号,得到第一控制命令,并向所述第二控制器发送所述第一控制命令;所述第二控制器接收来自所述第一控制器的所述第一控制命令,并基于所述第一控制命令,对所述第二显示区域进行显示控制;其中,所述第一控制器对所述第一显示区域进行显示控制,包括:所述第一控制器从向所述第二控制器发送所述第一控制命令起,延迟第一时长后,基于所述第一控制命令,对所述第一显示区域进行显示控制;所述第一时长为所述第一控制器向所述第二控制器发送所述第一控制命令到所述第二控制器接收后得到所述第一控制命令的时间。
- 根据权利要求14所述的信号同步方法,其中,当所述第一控制器和所述第二控制器接收来自驱动电路的控制信号时,所述方法还包括:所述第一控制器根据所述控制信号,得到第一控制命令,并向所述第二控制器发送所述第一控制命令;所述第二控制器根据所述控制信号,得到第二控制命令,并向所述第一控制器发送所述第二控制命令;所述第一控制器接收所述第二控制命令;所述第二控制器接收所述第一控制命令;其中,所述第一控制器对所述第一显示区域进行显示控制,包括:所述第一控制器基于所述第一控制命令和所述第二控制命令得到第三控制命令;根据所述第三控制命令,对所述第一显示区域进行显示控制;所述第二控制器对所述第二显示区域进行显示控制,包括:所述第二控制器基于所述第一控制命令和所述第二控制命令得到第四控制命令;根据所述第四控制命令,对所述第二显示区域进行显示控制。
- 根据权利要求16所述的信号同步方法,其中,所述第三控制命令和所述第四控制命令相同,或,所述第三控制命令和所述第四控制命令的信号重叠率大于99%。
- 根据权利要求16所述的信号同步方法,其中,所述基于所述第一控制命令和所述第二控制命令得到第三控制命令,包括:对所述第一控制命令和所述第二控制命令进行与运算,得到所述第三控制命令。
- 根据权利要求14所述的信号同步方法,其中,当所述第一控制器和所述第二控制器接收来自驱动电路的控制信号时,所述方法还包括:所述第二控制器根据所述控制信号,得到第二控制命令;并基于所述第二控制命令,对所述第二显示区域进行显示控制;所述第一控制器根据所述控制信号,得到第一控制命令;其中,所述第一控制器对所述第一显示区域进行显示控制,包括:所述第一控制器从得到所述控制信号起延迟第二时长后,基于所述第一控制命令,对所述第一显示区域进行显示控制;所述第二时长为所述第二控制器接收所述控制信号的时间与所述第一控制器接收到所述控制信号的时间的时间差。
- 根据权利要求14-19中任一项所述的信号同步方法,其中,所述控制信号用于控制所述显示屏点亮或熄灭;所述控制信号包括补偿信号,所述补偿信号用于补偿所述第一显示区域和所述第二显示区域的晶体管的阈值电压和/或迁移率。
- 根据权利要求14-20中任一项所述的信号同步方法,其中,所述阈值时间小于14.4微秒。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2022/102212 WO2024000228A1 (zh) | 2022-06-29 | 2022-06-29 | 显示装置及其信号同步方法、像素电路 |
CN202280001986.7A CN117678003A (zh) | 2022-06-29 | 2022-06-29 | 显示装置及其信号同步方法、像素电路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2022/102212 WO2024000228A1 (zh) | 2022-06-29 | 2022-06-29 | 显示装置及其信号同步方法、像素电路 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024000228A1 true WO2024000228A1 (zh) | 2024-01-04 |
Family
ID=89383407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2022/102212 WO2024000228A1 (zh) | 2022-06-29 | 2022-06-29 | 显示装置及其信号同步方法、像素电路 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN117678003A (zh) |
WO (1) | WO2024000228A1 (zh) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1570737A (zh) * | 2003-07-11 | 2005-01-26 | 友达光电股份有限公司 | 多晶硅薄膜晶体管液晶显示器的电路布局方法 |
US20070057865A1 (en) * | 2005-09-12 | 2007-03-15 | Samsung Electronics Co., Ltd. | Display driving circuit, display device, display system and method of driving display devices |
CN103903548A (zh) * | 2014-03-07 | 2014-07-02 | 京东方科技集团股份有限公司 | 一种显示面板的驱动方法和驱动*** |
CN106415697A (zh) * | 2014-05-21 | 2017-02-15 | 三星电子株式会社 | 显示装置、包括该显示装置的电子设备以及操作该电子设备的方法 |
CN108257551A (zh) * | 2016-12-28 | 2018-07-06 | 乐金显示有限公司 | 电致发光显示器及其驱动装置 |
CN111613173A (zh) * | 2019-02-23 | 2020-09-01 | 华为技术有限公司 | 显示驱动***、显示模组、显示屏的驱动方法及电子设备 |
CN113506532A (zh) * | 2021-06-30 | 2021-10-15 | 厦门天马微电子有限公司 | 显示面板和显示装置 |
CN114267275A (zh) * | 2020-09-16 | 2022-04-01 | 三星显示有限公司 | 具有脉冲宽度可调的扫描信号的显示装置 |
-
2022
- 2022-06-29 CN CN202280001986.7A patent/CN117678003A/zh active Pending
- 2022-06-29 WO PCT/CN2022/102212 patent/WO2024000228A1/zh active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1570737A (zh) * | 2003-07-11 | 2005-01-26 | 友达光电股份有限公司 | 多晶硅薄膜晶体管液晶显示器的电路布局方法 |
US20070057865A1 (en) * | 2005-09-12 | 2007-03-15 | Samsung Electronics Co., Ltd. | Display driving circuit, display device, display system and method of driving display devices |
CN103903548A (zh) * | 2014-03-07 | 2014-07-02 | 京东方科技集团股份有限公司 | 一种显示面板的驱动方法和驱动*** |
CN106415697A (zh) * | 2014-05-21 | 2017-02-15 | 三星电子株式会社 | 显示装置、包括该显示装置的电子设备以及操作该电子设备的方法 |
CN108257551A (zh) * | 2016-12-28 | 2018-07-06 | 乐金显示有限公司 | 电致发光显示器及其驱动装置 |
CN111613173A (zh) * | 2019-02-23 | 2020-09-01 | 华为技术有限公司 | 显示驱动***、显示模组、显示屏的驱动方法及电子设备 |
CN114267275A (zh) * | 2020-09-16 | 2022-04-01 | 三星显示有限公司 | 具有脉冲宽度可调的扫描信号的显示装置 |
CN113506532A (zh) * | 2021-06-30 | 2021-10-15 | 厦门天马微电子有限公司 | 显示面板和显示装置 |
Also Published As
Publication number | Publication date |
---|---|
CN117678003A (zh) | 2024-03-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9875676B2 (en) | Display device and method of inspecting the same | |
JP6088203B2 (ja) | ディスプレイコントローラ、イメージデータ処理システム、及び携帯用装置のディスプレイデータ処理方法 | |
US20210035488A1 (en) | Display device and driving method thereof | |
US10354587B2 (en) | Display device | |
KR102508954B1 (ko) | 디스플레이 시스템 및 그의 제어 방법 | |
JP2012113284A (ja) | ソース駆動回路、ソース駆動回路を含むディスプレー装置、及びディスプレー装置の動作方法 | |
TWI514152B (zh) | 可動態調整畫面更新頻率之顯示方法及顯示系統 | |
US20150138212A1 (en) | Display driver ic and method of operating system including the same | |
US20180061299A1 (en) | Timing controller and display driving circuit including the same | |
US10083644B2 (en) | Panel control systems and display devices | |
KR102242104B1 (ko) | 표시장치 | |
US20160180491A1 (en) | Display system having two systems which operate one at a time | |
KR102617564B1 (ko) | 표시 장치 및 이의 동작 방법 | |
US9035925B2 (en) | Circuit for controlling non-signal of flat panel display device | |
US20190089927A1 (en) | Block-based power efficient timing engine for smart display panels | |
US9666108B2 (en) | Opportunistic compression for display self refresh | |
US20090040198A1 (en) | Method for detecting pixel status of flat panel display and display driver thereof | |
US20190087144A1 (en) | Frame-based power efficient timing engine for smart display panels | |
US11980085B2 (en) | Display device and method of inspecting the same | |
WO2024000228A1 (zh) | 显示装置及其信号同步方法、像素电路 | |
US20220199042A1 (en) | Display apparatus and method of driving display apparatus | |
US20180188795A1 (en) | Integrated circuit and operation method of the same | |
KR102189928B1 (ko) | MIP(Memory Inside Pixel) 디스플레이를 포함하는 시스템의 데이터 전송 방법 | |
KR102473136B1 (ko) | 유기전계발광 표시장치의 보상방법 | |
TWI667608B (zh) | 系統晶片裝置、顯示驅動器以及包括上述的系統晶片系統 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 202280001986.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22948347 Country of ref document: EP Kind code of ref document: A1 |