WO2017128735A1 - 数据输入单元、数据输入方法、源极驱动电路和显示装置 - Google Patents

数据输入单元、数据输入方法、源极驱动电路和显示装置 Download PDF

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Publication number
WO2017128735A1
WO2017128735A1 PCT/CN2016/098952 CN2016098952W WO2017128735A1 WO 2017128735 A1 WO2017128735 A1 WO 2017128735A1 CN 2016098952 W CN2016098952 W CN 2016098952W WO 2017128735 A1 WO2017128735 A1 WO 2017128735A1
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WIPO (PCT)
Prior art keywords
control signal
data input
data
module
display data
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PCT/CN2016/098952
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English (en)
French (fr)
Inventor
刘陈曦
耿伟彪
解宇
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/537,692 priority Critical patent/US10325544B2/en
Publication of WO2017128735A1 publication Critical patent/WO2017128735A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/027—Arrangements or methods related to powering off a display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/08—Details of image data interface between the display device controller and the data line driver circuit

Definitions

  • the present disclosure relates to a data input unit, a data input method, a source drive circuit, and a display device.
  • the source driver IC in the display device scans the digital signals of the predetermined format and scans in a predetermined order to transmit the analog signals to the respective data lines.
  • the data input unit of the source driver circuit only includes an input module (eg, can be an input register) to provide normal display data to the data input of the source driver circuit.
  • an input module eg, can be an input register
  • the source cannot be turned to the source.
  • the drive circuit provides pre-set display data, which does not improve the display quality of the display device.
  • the present disclosure is directed to solving the problem that a special driving function other than the normal driving function cannot be performed to improve the performance and display quality of the display device.
  • the present disclosure provides a data input unit including an input module, the data input unit further comprising a setting module and a selection module, wherein the setting module is configured to preset one or more predetermined display data.
  • the selection module is configured to select, by the input module or the setting module, input display data to the data input terminal according to one or more external control signals.
  • the external control signal may comprise a shutdown control signal.
  • the selection module can include a bidirectional switch.
  • the setting module presets the first predetermined display data, and the grayscale value of the first display data may be 0.
  • the bidirectional switch comprises a control terminal, a first input terminal, a second input terminal and an output terminal.
  • the control end of the bidirectional switch receives the shutdown control signal
  • the first input end of the bidirectional switch is connected to the setting module
  • the second input end of the bidirectional switch is connected to the input module
  • the bidirectional An output of the switch is coupled to the data input.
  • the setting module provides the first predetermined display data to the data input end
  • the input module is Data The input provides normal display data.
  • the external control signal may comprise a blank area control signal.
  • the selection module includes a bidirectional switch. The setting module presets second predetermined display data, and the grayscale value of the second display data is within a predetermined range.
  • the bidirectional switch comprises a control terminal, a first input terminal, a second input terminal and an output terminal.
  • the control end of the bidirectional switch receives the blank area control signal
  • the first input end of the bidirectional switch is connected to the setting module
  • the second input end of the bidirectional switch is connected to the input module
  • An output of the bidirectional switch is coupled to the data input.
  • the data input unit may further include a switch control signal generating module.
  • the external control signal can include both a shutdown control signal and a blank area control signal.
  • the selection module can include a bidirectional switch.
  • the switch control signal generating module generates a switch control signal according to the shutdown control signal and the blank area control signal, wherein when the shutdown control signal is valid or the blank area control signal is valid, the control switch control signal is in the first state And when the shutdown control signal and the blank area control signal are both invalid, controlling the switch control signal to be in the second state.
  • the setting module presets first predetermined display data and second predetermined display data.
  • the control terminal of the setting module can also receive an input control signal.
  • the bidirectional switch comprises a control terminal, a first input terminal, a second input terminal and an output terminal.
  • the control end of the bidirectional switch receives the switch control signal, the first input end of the bidirectional switch is connected to the setting module, and the second input end of the bidirectional switch is connected to the input module, the bidirectional An output of the switch is coupled to the data input.
  • the setting module When the switch control signal is in the first state and the shutdown control signal is valid, the setting module provides the first predetermined display data to the data input end, when the switch control signal is in the first state When the blank area control signal is valid, the setting module provides second predetermined display data to the data input end, and when the switch control signal is in the second state, the input module sends the data input end to the data input end Provide normal display data;
  • the grayscale value of the first display data may be zero.
  • the data input terminal is accessed
  • the second display data it is possible to control display of a grayscale screen on the display panel connected to the data input terminal.
  • the switch control signal generating module may comprise an OR gate.
  • the OR gate may include a first OR gate input, a second OR gate input, and an OR gate output, wherein the first OR gate input receives the blank area control signal and the second OR gate input termination And entering an inverted signal of the shutdown control signal, and the OR gate output is connected to a control end of the bidirectional switch.
  • the present disclosure also provides a data input method, including:
  • the setting module presets one or more predetermined display data
  • the selection module selects to provide display data to the data input by the input module or the setting module based on one or more external control signals.
  • the external control signal may comprise a shutdown control signal.
  • the selection module can include a bidirectional switch.
  • the setting module presets the first predetermined display data, and the grayscale value of the first display data may be zero.
  • the selection module controls the first predetermined display data to be provided by the setting module to the data input end, and when the shutdown control signal is invalid, the selection module controls the The input module provides normal display data to the data input.
  • the external control signal may comprise a blank area control signal.
  • the setting module presets second predetermined display data, and the grayscale value of the second display data is within a predetermined range.
  • the selection module controls, by the setting module, to provide second predetermined display data to the data input end, when the blank area control signal is invalid, The selection module controls the normal display data provided by the input module to the data input.
  • the data input end receives the second display data, it is possible to control display of a grayscale picture on a display panel connected to the data input end.
  • the data input unit may further include a switch control signal generating module.
  • the external control signal includes both a shutdown control signal and a blank area control signal.
  • the selection module can include a bidirectional switch.
  • the switch control signal generating module is configured to generate a switch control signal according to the shutdown control signal and the blank area control signal, wherein when the shutdown control signal is valid or the blank area control signal is valid, the control switch control signal is in the first In a state, when the shutdown control signal and the blank area control signal are both invalid, the switch control signal is controlled to be in the second state.
  • the setting module presets the first predetermined display data and the second predetermined display data.
  • the control terminal of the setting module can also receive an input control signal.
  • the control end of the bidirectional switch receives the switch control signal, the first input end is connected to the setting module, the second input end is connected to the input module, and the output end is connected to the data input end. connection.
  • the setting module provides the first predetermined display data to the data input end, when the switch control signal is in the first state
  • the setting module provides second predetermined display data to the data input end, and when the switch control signal is in the second state, the input module sends the data input end to the data input end Provide normal display data.
  • the grayscale value of the first display data may be zero.
  • the present disclosure also provides a source driving circuit including a data input terminal and the above-described data input unit.
  • the present disclosure also provides a display device including the above-described source driving circuit.
  • the data input unit, the data input method, the source drive circuit, and the display device described in the present disclosure add a setting module and a selection module.
  • the setting module presets predetermined display data corresponding to the specific display requirement, and the selection module selects whether it is necessary to provide display data to the data input terminal by the setting module according to the external control signal.
  • a special driving function can be provided, thereby improving the performance and display quality of the display device.
  • 1 is a structural diagram of a source driving circuit
  • FIG. 2 is a structural block diagram of a data input unit of an embodiment of the present disclosure
  • FIG. 3 is a structural diagram of a data input unit according to an embodiment of the present disclosure.
  • FIG. 4 is a structural diagram of a data input unit according to another embodiment of the present disclosure.
  • FIG. 5 is a structural diagram of a data input unit according to still another embodiment of the present disclosure.
  • FIG. 6 is a structural diagram of a first embodiment of a data input unit of the present disclosure.
  • Figure 7 is a structural diagram of a second embodiment of the data input unit of the present disclosure.
  • Figure 8 is a structural diagram of a third embodiment of the data input unit of the present disclosure.
  • FIG. 9 is a flow chart of a data input method of an embodiment of the present disclosure.
  • the source driving circuit generally includes an input module, a data register 101, a driving buffer 102, a digital-to-analog converter 103, a level shifter 104, a line latch 105, and a shift register 106, wherein
  • the input module can be a Mini Low-Voltage Differential Signaling Receiver 107 (Mini Low-Voltage Differential Signaling Receiver).
  • the Mini low voltage differential signal receiver 107 receives display data D00-D05, D10-D15, D20-D25, and a clock signal CLK.
  • the data register 101 receives the data inversion control signal REV.
  • the line latch 105 receives the load control signal LD.
  • the shift register 106 receives the clock signal CLK, the output channel number selection setting terminal signal CHNSL[2:0], the scanning direction control signal SHL, the first sequential control signal DIO1, and the second sequential control signal DIO2, wherein the scanning direction control signal signal SHL is used to control whether the IC scans from left to right or right to left.
  • the digital-to-analog converter 103 receives the polarity inversion signal POL and the reference voltages V1-V14 of the gamma circuit.
  • the drive buffer 102 includes N channels (N is a positive integer), and outputs a first output signal Output1 to an Nth output signal OutputN.
  • VDD represents a logic circuit module supply voltage
  • AVDD represents an analog circuit module supply voltage
  • GND represents a logic circuit module reference ground level
  • AVSS represents an analog circuit module reference ground level.
  • the data input unit includes only an input module (for example, a Mini low voltage differential signal receiver 107), so that when there is a special display requirement, the source driving circuit cannot be driven. Provides preset display data.
  • an input module for example, a Mini low voltage differential signal receiver 107
  • the data input unit of the embodiment of the present invention includes an input module 20 for providing normal display data.
  • the data input unit of the embodiment of the present invention further includes a setting module 21 for presetting one or more predetermined display data, and a selection module 22 for selecting Ctrl according to an external control signal. The selection of the display data by the input module 20 or the setting module 21 to the data input terminal is selected.
  • the data input unit of the embodiment of the present invention adds a setting module 21 and a selection module 22, and the setting module 21 presets one or more predetermined display data corresponding to a specific display requirement, and the selection module selects according to the external control signal Ctrl. Is it necessary to provide predetermined display data to the data input by the setting module 21 in order to meet specific display requirements, for example, displaying a black picture on the display panel when the power is turned off Face, or insert a grayscale image in a blank area between two frames of display data to improve display quality.
  • the input module 20 may be an input register.
  • the input module 20 can be a Mini Low-Voltage Differential Signaling Receiver and is used to provide display data in the form of a binary code to the data input terminal during normal display.
  • the data input end may be a data input end of the source drive circuit, or may be a data input end of other circuit units that provide display data to the display panel.
  • the external control signal may include a shutdown control signal Reset.
  • the selection module can include a bidirectional switch SW.
  • the setting module 21 is configured to preset the first display data Data1.
  • the bidirectional switch SW may include a control end, a first input end, a second input end, and an output end, wherein the control end of the bidirectional switch SW receives the shutdown control signal Reset, the first input of the bidirectional switch SW The terminal is connected to the setting module 21, and the second input end of the bidirectional switch SW is connected to the input module 20.
  • the output end of the bidirectional switch SW is connected to the data input terminal Input.
  • the bidirectional switch SW is configured to control, when the shutdown control signal Reset is valid, to provide the first display data Data1 to the data input terminal Input by the setting module 21, and when the shutdown control signal is invalid, the control is controlled by The input module 20 provides normal display data to the data input terminal Input.
  • the data input terminal Input can be connected to a data register DR (Data Register) in the source driving circuit, so that display data can be supplied to the data register DR through the data input terminal Input.
  • DR Data Register
  • the shutdown control signal Reset When the display device is turned off, the shutdown control signal Reset is valid during the shutdown period from when the shutdown signal is detected to when the power is turned off. According to one embodiment, the potential of Reset at this time can be controlled to a low level. When not in the above-mentioned shutdown period, the shutdown control signal Reset is invalid. According to an embodiment, the potential of the shutdown control signal Reset at this time can be controlled to a high level. However, it should be understood that the effective and inactive potentials of Reset can be set as needed, without being limited to the above settings.
  • the grayscale value of the first display data Data1 is zero.
  • a black screen data signal is supplied to the data line through the data input terminal Input, thereby outputting a black screen to the display panel.
  • a black screen is displayed on the display screen when the computer is turned off, thereby preventing the user from seeing an image generated by the shutdown sequence without being presented to the user.
  • the external control signal may include a blank area control Signal BL.
  • the selection module can include a bidirectional switch SW.
  • the setting module 21 is configured to preset the second display data Data2, and the grayscale value of the second display data Data2 is within a predetermined range.
  • the bidirectional switch SW may include a control end, a first input end, a second input end, and an output end, wherein the control end of the bidirectional switch SW receives the blank area control signal BL, and the first end of the bidirectional switch SW The input end is connected to the setting module 21, the second input end of the bidirectional switch SW is connected to the input module 20, and the output end of the bidirectional switch SW is connected to the data input terminal Input.
  • the bidirectional switch SW is configured to control, when the blank area control signal BL is valid, to provide the second display data Data2 to the data input terminal Input by the setting module 21, so as to be controlled to be connected to the data input terminal Input
  • the grayscale screen is displayed on the display panel, and when the blank area control signal BL is invalid, the display is provided by the input module 20 to the data input terminal Input to provide normal display data.
  • the data input terminal Input can be connected to the data register DR included in the source driving circuit, so that display data can be supplied to the data register DR through the data input terminal Input.
  • the blank area control signal BL is active when it is in a blank area between two frames of display data.
  • the potential of the blank area control signal BL at this time can be controlled to a high level.
  • the potential of the blank area control signal BL can be controlled to a low level.
  • the second display data Data2 is input to the source driving circuit to control display of the gray scale picture on the display panel connected to the source driving circuit, that is, when the data is displayed between the two frames. Insert a grayscale image to improve the display quality.
  • the effective and inactive potentials of the blank area control signal BL can be set as needed, without being limited to the above settings.
  • the data input unit further includes a switch control signal generating module 23.
  • the external control signal includes a shutdown control signal Reset and a blank area control signal BL.
  • the selection module includes a bidirectional switch SW.
  • the switch control signal generating module 23 generates a switch control signal SC according to the shutdown control signal Reset and the space ratio zone control signal BL.
  • the switch control signal SC is controlled to be in the first state.
  • the switch control signal SC is controlled to be in the second state.
  • the setting module 21 first sets the first display data Data1 and the second display data Data2. Place The control terminal of the setting module 21 also receives an input control signal.
  • the bidirectional switch SW includes a control end, a first input end, a second input end, and an output end, wherein the control end of the bidirectional switch SW receives the switch control signal SC, and the first input end of the bidirectional switch SW Connected to the setting module 21, the second input end of the bidirectional switch SW is connected to the input module 20, and the output end of the bidirectional switch SW is connected to the data input terminal Input.
  • the bidirectional switch SW controls the first display data Data1 provided by the setting module 21 to the data input terminal Input.
  • the bidirectional switch SW controls the second display data Data2 provided by the setting module 21 to the data input terminal Input.
  • the bidirectional switch SW controls the input data from the input module 20 to provide normal display data to the data input terminal Input when the switch control signal SC is in the second state.
  • the grayscale value of the first display data Data1 is 0.
  • a grayscale screen can be displayed on the display panel connected to the data input terminal Input.
  • the data input unit employs a switch control signal generating module to generate a switch control signal according to the shutdown control signal and the blank area control signal, and controls the bidirectional switch according to the switch control signal. Therefore, when the shutdown control signal is valid, the first display data can be controlled by the setting module to the data input end to display a black screen on the display panel, so that the black screen is displayed on the display screen when the computer is turned off, thereby avoiding the user.
  • the control when the blank area control signal is valid, the control provides the second display data to the data input end by the setting module to display the grayscale image on the display panel, ie When the blank area between the two frames of display data is inserted, the gray scale picture is inserted to improve the display quality; when the shutdown control signal and the blank area control signal are invalid, the control provides normal display data by the input module.
  • the switch control signal generating module may comprise an OR gate.
  • the OR gate includes a first OR gate input, a second OR gate input, and an OR gate output, wherein the first OR gate input receives the blank area control signal, the second OR gate input Receiving an inverted signal of the shutdown control signal, and the OR gate output is connected to a control end of the bidirectional switch.
  • the data input unit of the present disclosure is further described below in conjunction with FIGS. 6 through 8.
  • the data input unit supplies the next normal display data to the data input terminal of the source drive circuit.
  • Display data includes 6-bit red display data R0-R5, 6-bit green display data G0-G5 and 6-bit blue display data B0-B5. That is, the format of the display data is a 6-bit 3-string differential input signal.
  • the display data input to the data input unit of the present disclosure is not limited to the above-described number of bits of the display data, the signal data format, the number of signal strings, and the number of driving channels of the source driving circuit.
  • the data input unit may include an input module 20, a setting module 21, and a selection module.
  • the source driver circuit includes a data register DR to enable normal display data from the data input unit to be received through the data input terminal Input.
  • the selection module receives an external control signal, wherein the external control signal may include a shutdown control signal Reset, the shutdown control signal Reset is active at a low level, and is inactive at a high level.
  • the selection module can include a bidirectional switch SW.
  • the setting module 21 presets the first display data Data1. As shown in FIG. 6, for example, the values of R0-R5, the values of G0-G5, and the values of B0-B5 may all be zero.
  • the bidirectional switch SW may include a control end, a first input end A, a second input end B, and an output end C, wherein the control end of the bidirectional switch SW receives the shutdown control signal Reset, and the bidirectional switch SW a first input terminal A is connected to the setting module 21, a second input terminal B of the bidirectional switch SW is connected to the input module 20, an output terminal C of the bidirectional switch SW and the source driving circuit The data input is connected.
  • the first input terminal A and the output terminal C of the bidirectional switch SW are turned on, so that the setting module 21 outputs Data1 to the data input terminal Input to display a black screen on the display panel. In this way, a black screen appears on the display screen when the computer is turned off, thereby preventing the user from seeing images that are not required to be presented to the user due to the shutdown timing.
  • the second input terminal B of the bidirectional switch SW is electrically connected to the output terminal C, so that the input module outputs normal display data to the data input terminal Input.
  • R indicates the resistance and All indicates all the registers in Figure 6. That is, in the example shown in FIG. 6, all of the register hardware are set to be connected to pull-down resistors, and the values stored in all registers are set to zero.
  • the data input unit includes an input module 20, a setting module 21, and a selection module.
  • the source driver circuit includes a data register DR to enable normal display data from the data input unit to be received through the data input terminal Input.
  • the selection module receives an external control signal, wherein the external control signal may include a blank area control signal BL, the blank area control signal BL is active at a high level, and is inactive at a low level.
  • the selection module can include a bidirectional switch SW.
  • the setting module 21 presets the second display data Data2.
  • the bidirectional switch SW includes a control end, a first input end A, a second input end B, and an output end C, wherein the control end of the bidirectional switch SW receives a blank area control signal BL, and the first end of the bidirectional switch SW
  • the input terminal A is connected to the setting module 21
  • the second input terminal B of the bidirectional switch SW is connected to the input module 20, and the data input of the output terminal C of the bidirectional switch SW and the source driving circuit The terminal is connected.
  • the first input end A and the output end C of the bidirectional switch SW are turned on, so that the setting module 21 outputs Data2 to the data input end Input to display gray scale on the display panel.
  • the picture that is, when the blank area between the two frames of display data is inserted, the gray scale picture is inserted to improve the display quality.
  • the second input terminal B of the bidirectional switch SW is turned on with the output terminal C, so that the input module outputs normal display data to the data input terminal Input.
  • the R/L signal ie, the shift direction control signal received by the source drive circuit is zero. Therefore, in Data2, the red display data R is 100000, the green display data G is 100000, and the blue display data B is 100000, that is, the grayscale value of Data2 is 127, which is the intermediate gray scale. Inserting a grayscale image in the blank area facilitates the grayscale transition between the two frames, and is advantageous for balancing the interaction of the blank area data lines in the entire display area with the peripheral pixel capacitance.
  • the predetermined display data stored in the setting module is fixed.
  • the predetermined display data can be set by hardware as needed during the production of an integrated circuit.
  • the predetermined display data stored in the setting module may also be customized to a certain value, such as 6 bits L0 (000000), L255 (111111), or other values, as needed.
  • the data input unit includes an input module 20, a setting module 21, and a selection module.
  • the source driver circuit includes a data register DR to enable normal display data from the data input unit to be received through the data input terminal Input.
  • the selection module receives an external control signal.
  • the external control signal may include a shutdown control signal Reset and a blank area control signal BL.
  • the selection module includes a bidirectional switch SW.
  • the data input unit may further include a switch control signal generating module.
  • the switch control signal generating module includes an OR gate ORG.
  • the OR gate ORG includes a first OR gate input, a second OR gate input, and an OR gate output, wherein the first OR gate input of the ORG receives the blank area control signal BL, the second OR gate input of the ORG Receiving the inverted signal of the shutdown control signal Reset, ORG
  • the OR gate output is connected to the control terminal of the SW.
  • the OR gate output of the OR gate ORG outputs a switch control signal SC, wherein when the potential of the shutdown control signal Reset is low or the potential of the BL is high, the switch control signal output by the OR gate ORG through its OR gate output terminal SC is at a high level.
  • the switch control signal SC output by the OR gate ORG through its OR gate output terminal is at a low level.
  • the setting module 21 presets the first display data Data1 and the second display data Data2, and includes a first switch 211, a second switch 212, and a third switch 213, wherein the control end of the first switch 211, Both the control end of the second switch 212 and the control end of the third switch 213 are configured to receive a shutdown control signal Reset.
  • the first switch 211 controls the value of R0 to be 0, the first switch 211 controls the value of G0 to be 0, and the first switch 211 controls the value of B0 to be 0.
  • the first switch 211 controls the value of R0 to be 1
  • the first switch 211 controls the value of G0 to be 1
  • the first switch 211 controls the value of B0 to be 1.
  • the values of R1-R5, the values of G1-G5, and the values of B1-B5 are all fixed to zero.
  • the bidirectional switch SW includes a control end, a first input end A, a second input end B, and an output end C, wherein the control end of the bidirectional switch SW receives the switch control signal SC, and the bidirectional switch SW An input terminal A is connected to the setting module 21, and a second input terminal B of the bidirectional switch SW is connected to the input module 20.
  • the output terminal C of the bidirectional switch SW and the data of the source driving circuit Input Input is connected.
  • the switch control signal SC output by the OR gate ORG When the switch control signal SC output by the OR gate ORG is at a high level, the first input terminal A of the bidirectional switch SW is connected to the data input terminal Input. At this time, if the potential of the off control signal Reset is low, the setting module 21 supplies the first display data to the data register DR through the data input terminal Input, in which the values of R0-R5 are 0, G0-G5 have a value of 0, and B0-B5 have a value of 0. When the switch control signal SC and the off control signal Reset are both at a high level, the setting module 21 provides the second display data to the data register DR through the data input terminal Input, and the value of R0 and the value of G0 in the second display data.
  • the switch control signal SC is generated by the OR gate ORG according to the shutdown control signal Reset and the blank area control signal BL, and the bidirectional switch is controlled according to the switch control signal SC.
  • the switch control signal SC is generated by the OR gate ORG according to the shutdown control signal Reset and the blank area control signal BL, and the bidirectional switch is controlled according to the switch control signal SC.
  • the setting module provides the second display data to the data input end to display the gray scale picture on the display panel, that is, when the blank area between the two frames of display data is inserted, the gray scale picture is inserted.
  • the input module provides normal display data.
  • the input module 20 may be an input signal receiver (Input Signal Receiver).
  • the input module 20 can be a Mini low voltage differential signal receiver.
  • FIG. 9 illustrates a data input method according to an embodiment of the present disclosure, the method including:
  • Step S1 preset one or more predetermined display data by the setting module
  • Step S2 The selection module inputs the display data from the input module or the setting module to the data input terminal according to the external control signal.
  • one or more predetermined display data corresponding to a specific display requirement are preset by the setting module, and then the selection module selects whether or not the setting is required according to the external control signal.
  • the module provides display data to the data input to meet specific display requirements. For example, a black screen can be displayed on the display panel when the power is turned off, or a grayscale image can be inserted in a blank area between two frames of display data to improve display quality. .
  • the data input end may be a data input end of the source drive circuit, or may be a data input end of other circuit units that provide display data to the display panel.
  • the external control signal may comprise a shutdown control signal
  • the selection module may comprise a bidirectional switch.
  • the step S1 may include: the setting module presets the first display data, and the grayscale value of the first display data is 0.
  • Step S2 may include: when the shutdown control signal is valid, providing, by the bidirectional switch in the selection module, the first display data from the setting module to the data input end, and when the shutdown control signal is invalid, The bidirectional switch control in the selection module provides normal display data to the data input by the input module.
  • the external control signal may comprise a blank area control signal.
  • the step S1 may include: the setting module presets the second display data, and the grayscale value of the second display data is within a predetermined range.
  • Step S2 may include: when the blank area control signal is valid, providing second display data to the data input end by the setting module by a bidirectional switch control in the selection module, when the blank area control signal When invalid, controlled by the bidirectional switch in the selection module
  • the input module provides normal display data to the data input. When the data input end receives the second display data, it is possible to control display of a grayscale picture on a display panel connected to the data input end.
  • the data input unit may further include a switch control signal generating module
  • the external control signal may include a shutdown control signal and a blank area control signal
  • the selection module may include a bidirectional switch.
  • the switch control signal generating module generates a switch control signal according to the shutdown control signal, wherein when the shutdown control signal is valid or the blank area control signal is valid, the control switch control signal is in a first state, when the shutdown control signal is And when the blank area control signal is invalid, the switch control signal is controlled to be in the second state.
  • the setting module presets the first display data and the second display data.
  • the control terminal of the setting module can also receive an input control signal.
  • the bidirectional switch includes a control end, a first input end, a second input end, and an output end, wherein a control end of the bidirectional switch receives the switch control signal, and the first input end of the bidirectional switch and the set
  • the module is connected, the second input of the bidirectional switch is connected to the input module, and the output of the bidirectional switch is connected to the data input.
  • the bidirectional switch control provides the first display data to the data input by the setting module when the switch control signal is in the first state and the shutdown control signal is active.
  • the bidirectional switch control provides the second display data to the data input by the setting module when the switch control signal is in the first state and the blank area control signal is active.
  • the bidirectional switch control provides normal display data from the input module to the data input when the switch control signal is in the second state.
  • the grayscale value of the first display data may be zero.
  • the source driving circuit may include a data input terminal and a data input unit as described above, the data input unit controlling the display data being provided to the data input terminal by the input module or the setting module.
  • the display device may include the source driving circuit described above.
  • a new structural unit is integrated on the basis of a general-purpose source driver integrated circuit and controlled by an external control signal of the integrated circuit. Thereby, in addition to the normal driving function, other special driving functions can be realized, thereby improving the performance and display quality of the display device.

Abstract

一种数据输入单元、数据输入方法、源极驱动电路和显示装置。所述数据输入单元包括：输入模块(20)，被配置为提供正常显示数据；设定模块(21)，被配置为预先设定一个或多个预定显示数据；以及选择模块(22)，被配置为根据一个或多个外部控制信号(Ctrl)来选择是由输入模块(20)向数据输入端提供正常显示数据，还是由设定模块(21)向数据输入端提供特定的预定显示数据。由此，除了提供正常驱动功能之外，还可以针对特定显示需求来提供特殊的驱动功能以提升显示器件的性能和显示品质。

Description

数据输入单元、数据输入方法、源极驱动电路和显示装置 技术领域
本公开涉及一种数据输入单元、数据输入方法、源极驱动电路和显示装置。
背景技术
显示器件中的源极驱动集成电路(Source Driver IC)在对预定格式的数字信号进行解析处理之后，按预定顺序进行扫描，以将模拟信号发送给各数据线的。通常，源极驱动电路的数据输入单元仅包括输入模块(例如可以为输入寄存器)以向源极驱动电路的数据输入端提供正常的显示数据。当有特殊的显示需求时，例如，当需要关机时在显示面板上显示黑画面时，或者当需要在两帧显示数据之间的空白区插入灰阶画面以提升显示品质时，无法向源极驱动电路提供预先设定的显示数据，从而无法提升显示器件的显示品质。
发明内容
本公开针对解决无法执行除了正常驱动功能之外的特殊驱动功能以提升显示器件的性能和显示品质的问题。
为此，本公开提供了一种数据输入单元，包括输入模块，所述数据输入单元还包括设定模块和选择模块，其中，所述设定模块用于预先设定一个或多个预定显示数据；所述选择模块用于根据一个或多个外部控制信号来选择由所述输入模块或所述设定模块向数据输入端输入显示数据。
根据一个实施例，所述外部控制信号可以包括关机控制信号。另外，所述选择模块可以包括双向开关。根据一个实施例，所述设定模块预先设定第一预定显示数据，所述第一显示数据的灰阶值可以为0。
根据一个实施例，所述双向开关包括控制端、第一输入端、第二输入端和输出端。所述双向开关的控制端接收所述关机控制信号，所述双向开关的第一输入端与所述设定模块连接，所述双向开关的第二输入端与所述输入模块连接，所述双向开关的输出端与所述数据输入端连接。根据一个实施例，当所述关机控制信号有效时控制，由所述设定模块向所述数据输入端提供第一预定显示数据，当所述关机控制信号无效时，由所述输入模块向所述数据 输入端提供正常的显示数据。
根据一个实施例，所述外部控制信号可以包括空白区控制信号。另外，所述选择模块包括双向开关。所述设定模块预先设定第二预定显示数据，所述第二显示数据的灰阶值在预定范围内。
根据一个实施例，所述双向开关包括控制端、第一输入端、第二输入端和输出端。所述双向开关的控制端接收所述空白区控制信号，所述双向开关的第一输入端与所述设定模块连接，所述双向开关的第二输入端与所述输入模块连接，所述双向开关的输出端与所述数据输入端连接。当所述空白区控制信号有效时，由所述设定模块向所述数据输入端提供第二预定显示数据，当所述空白区控制信号无效时，由所述输入模块向所述数据输入端提供正常的显示数据。当所述数据输入端接收所述第二预定显示数据时，能够控制在与该数据输入端连接的显示面板上显示灰阶画面。
根据一个实施例，所述数据输入单元还可以包括开关控制信号生成模块。所述外部控制信号可以包括关机控制信号和空白区控制信号两者。所述选择模块可以包括双向开关。
所述开关控制信号生成模块根据所述关机控制信号和所述空白区控制信号生成开关控制信号，其中，当所述关机控制信号有效或空白区控制信号有效时，控制开关控制信号处于第一状态，当所述关机控制信号和所述空白区控制信号都无效时，控制所述开关控制信号处于第二状态。
所述设定模块预先设定第一预定显示数据和第二预定显示数据。另外，所述设定模块的控制端还可以接收输入控制信号。
根据一个实施例，所述双向开关包括控制端、第一输入端、第二输入端和输出端。所述双向开关的控制端接收所述开关控制信号，所述双向开关的第一输入端与所述设定模块连接，所述双向开关的第二输入端与所述输入模块连接，所述双向开关的输出端与所述数据输入端连接。当所述开关控制信号处于第一状态并所述关机控制信号有效时，由所述设定模块向所述数据输入端提供第一预定显示数据，当所述开关控制信号处于第一状态并所述空白区控制信号有效时，由所述设定模块向所述数据输入端提供第二预定显示数据，当所述开关控制信号处于第二状态时，由所述输入模块向所述数据输入端提供正常的显示数据；
所述第一显示数据的灰阶值可以为0。另外，当所述数据输入端接入所 述第二显示数据时，能够控制在与该数据输入端连接的显示面板上显示灰阶画面。
根据一个实施例，所述开关控制信号生成模块可以包括或门。所述或门可以包括第一或门输入端、第二或门输入端和或门输出端，其中，所述第一或门输入端接收所述空白区控制信号，第二或门输入端接入所述关机控制信号的反相信号，所述或门输出端与所述双向开关的控制端连接。
本公开还提供了一种数据输入方法，包括：
设定模块预先设定一个或多个预定显示数据；
选择模块根据一个或多个外部控制信号选择由输入模块或设定模块向数据输入端提供显示数据。
根据一个实施例，所述外部控制信号可以包括关机控制信号。另外，所述选择模块可以包括双向开关。
根据一个实施例，设定模块预先设定第一预定显示数据，所述第一显示数据的灰阶值可以为0。当所述关机控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第一预定显示数据，当所述关机控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
根据一个实施例，所述外部控制信号可以包括空白区控制信号。设定模块预先设定第二预定显示数据，所述第二显示数据的灰阶值在预定范围内。根据一个实施例，当所述空白区控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第二预定显示数据，当所述空白区控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。当所述数据输入端接收所述第二显示数据时，能够控制在与该数据输入端连接的显示面板上显示灰阶画面。
根据一个实施例，所述数据输入单元还可以包括开关控制信号生成模块。所述外部控制信号包括关机控制信号和空白区控制信号两者。所述选择模块可以包括双向开关。所述开关控制信号生成模块用于根据所述关机控制信号和所述空白区控制信号生成开关控制信号，其中，当所述关机控制信号有效或空白区控制信号有效时，控制开关控制信号处于第一状态，当所述关机控制信号和所述空白区控制信号都无效时，控制所述开关控制信号处于第二状态。
根据一个实施例，所述设定模块预先设定第一预定显示数据和第二预定显示数据。另外，所述设定模块的控制端还可以接收输入控制信号。
根据一个实施例，所述双向开关的控制端接收所述开关控制信号，第一输入端与所述设定模块连接，第二输入端与所述输入模块连接，输出端与所述数据输入端连接。当所述开关控制信号处于第一状态并所述关机控制信号有效时，由所述设定模块向所述数据输入端提供第一预定显示数据，当所述开关控制信号处于第一状态并所述空白区控制信号有效时，由所述设定模块向所述数据输入端提供第二预定显示数据，当所述开关控制信号处于第二状态时，由所述输入模块向所述数据输入端提供正常显示数据。所述第一显示数据的灰阶值可以为0。当所述数据输入端接收所述第二显示数据时，能够在与该数据输入端连接的显示面板上显示灰阶画面。
本公开还提供了一种源极驱动电路，包括数据输入端以及上述的数据输入单元。
本公开还提供了一种显示装置，包括上述的源极驱动电路。
本公开所述的数据输入单元、数据输入方法、源极驱动电路和显示装置增加了设定模块和选择模块。设定模块预先设定与特定显示需求对应的预定显示数据，选择模块根据外部控制信号选择是否需要由设定模块向数据输入端提供显示数据。由此，除了正常驱动功能之外，还可以提供特殊的驱动功能，从而可以提升显示器件的性能和显示品质。
附图说明
图1是一种源极驱动电路的结构图；
图2是本公开实施例的数据输入单元的结构框图；
图3是本公开一实施例的数据输入单元的结构图；
图4是本公开另一实施例的数据输入单元的结构图；
图5是本公开又一实施例的数据输入单元的结构图；
图6是本公开的数据输入单元的第一实施例的结构图；
图7是本公开的数据输入单元的第二实施例的结构图；
图8是本公开的数据输入单元的第三实施例的结构图；
图9是本公开实施例的数据输入方法的流程图。
具体实施方式
下面将结合附图，对本公开的实施例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的一部分实施例，而不是全部的实施例。
如图1所示，源极驱动电路通常包括输入模块、数据寄存器101、驱动缓存器102、数模转换器103、电平转换器104、线锁存器105和移位寄存器106，其中，所述输入模块可以采用Mini低压差分信号接收器107(Mini Low-Voltage Differential Signaling Receiver)。
Mini低压差分信号接收器107接收显示数据D00-D05、D10-D15、D20-D25以及时钟信号CLK。数据寄存器101接收数据翻转控制信号REV。线锁存器105接收负荷控制信号LD。移位寄存器106接收时钟信号CLK、输出通道数量选择设置端子信号CHNSL[2：0]、扫描方向控制信号SHL、第一顺序控制信号DIO1和第二顺序控制信号DIO2，其中，扫描方向控制信号信号SHL用于控制IC是从左向右还是从右向左扫描。数模转换器103接收极性反转信号POL以及伽马电路的参考电压V1-V14。驱动缓存器102包括N个通道(N为正整数)，并且输出第一输出信号Output1至第N输出信号OutputN。
在图1中，VDD表示逻辑电路模块供电电压，AVDD表示模拟电路模块供电电压，GND表示逻辑电路模块参考地电平，AVSS表示模拟电路模块参考地电平。
在如图1所示，在通常的源极驱动电路中，数据输入单元仅包括输入模块(例如，Mini低压差分信号接收器107)，因此当有特殊的显示需求时，无法向源极驱动电路提供预先设定的显示数据。
图2所示，本发明实施例的数据输入单元包括用于提供正常显示数据的输入模块20。另外，本发明实施例的数据输入单元还包括设定模块21和选择模块22，其中，设定模块21用于预先设定一个或多个预定显示数据，选择模块22用于根据外部控制信号Ctrl来选择由所述输入模块20或所述设定模块21向数据输入端提供显示数据。
本发明实施例的数据输入单元增加了设定模块21和选择模块22，设定模块21预先设定与特定显示需求相对应的一个或多个预定显示数据，选择模块根据外部控制信号Ctrl来选择是否需要由设定模块21向数据输入端提供预定显示数据以便满足特定显示需求，例如，当关机时在显示面板上显示黑画 面，或者在两帧显示数据之间的空白区插入灰阶画面以提升显示品质。
根据一个实施例，所述输入模块20可以为输入寄存器(Input Register)。例如，所述输入模块20可以为低压差分信号接收器(Mini Low-Voltage Differential Signaling Receiver)，并且用于在正常显示时向数据输入端提供二进制码形式的显示数据。
根据一个实施例，所述数据输入端可以为源极驱动电路的数据输入端，也可以为向显示面板提供显示数据的其他电路单元的数据输入端。
根据一个实施例，如图3所示，所述外部控制信号可以包括关机控制信号Reset。所述选择模块可以包括双向开关SW。所述设定模块21用于预先设定第一显示数据Data1。所述双向开关SW可以包括控制端、第一输入端、第二输入端和输出端，其中，所述双向开关SW的控制端接收所述关机控制信号Reset，所述双向开关SW的第一输入端与所述设定模块21连接，所述双向开关SW的第二输入端与所述输入模块20连接，所述双向开关SW的输出端与所述数据输入端Input连接。所述双向开关SW用于当所述关机控制信号Reset有效时，控制由所述设定模块21向所述数据输入端Input提供第一显示数据Data1，当所述关机控制信号无效时，控制由所述输入模块20向所述数据输入端Input提供正常的显示数据。
如图3所示，数据输入端Input可以与源极驱动电路中的数据寄存器DR(Data Register)连接，使得能够通过该数据输入端Input向该数据寄存器DR提供显示数据。
在显示装置关机时，在从检测到关机信号至电源关断的关机时间段内，关机控制信号Reset为有效。根据一个实施例，此时的Reset的电位可以被控制为低电平。当不处于上述的关机时间段内时，关机控制信号Reset为无效。根据一个实施例，此时的关机控制信号Reset的电位可以被控制为高电平。然而，应当理解的是，可以根据需要来设置Reset的有效和无效电位，而不限于上述设置。
在如图3所示的实施例中，第一显示数据Data1的灰阶值是0。由此，在关机控制信号Reset有效时，通过数据输入端Input向数据线提供黑画面数据信号，从而向所述显示面板输出黑画面。由此，在关机时在显示屏上呈现黑画面，从而避免使用者看到由于关机时序而产生的无需展现给使用者的影像。
根据另一个实施例，如图4所示，所述外部控制信号可以包括空白区控 制信号BL。所述选择模块可以包括双向开关SW。所述设定模块21用于预先设定第二显示数据Data2，所述第二显示数据Data2的灰阶值在预定范围内。所述双向开关SW可以包括控制端、第一输入端、第二输入端和输出端，其中，所述双向开关SW的控制端接收所述空白区控制信号BL，所述双向开关SW的第一输入端与所述设定模块21连接，所述双向开关SW的第二输入端与所述输入模块20连接，所述双向开关SW的输出端与所述数据输入端Input连接。所述双向开关SW用于当所述空白区控制信号BL有效时，控制由所述设定模块21向所述数据输入端Input提供第二显示数据Data2，以便控制在与该数据输入端Input连接的显示面板上显示灰阶画面，而当所述空白区控制信号BL无效时，控制由所述输入模块20向所述数据输入端Input提供正常的显示数据。
如图4所示，数据输入端Input可以与源极驱动电路包括的数据寄存器DR连接，使得能够通过该数据输入端Input向该数据寄存器DR提供显示数据。
在如图4所示的实施例中，当处于两帧显示数据之间的空白区时，空白区控制信号BL有效。根据一个实施例，此时的空白区控制信号BL的电位可以被控制为高电平。当不处于空白区时，空白区控制信号BL的电位可以被控制为低电平。当空白区控制信号有效时，输入第二显示数据Data2至源极驱动电路，以便控制在与该源极驱动电路连接的显示面板上显示灰阶画面，即当处于两帧显示数据之间的空白区时插入灰阶画面以提升显示品质。
应当理解的是，可以根据需要来设置空白区控制信号BL的有效和无效电位，而不限于上述设置。
根据本公开的另一个实施例，如图5所示，所述数据输入单元还包括开关控制信号生成模块23。所述外部控制信号包括关机控制信号Reset和空白区控制信号BL。所述选择模块包括双向开关SW。
所述开关控制信号生成模块23根据所述关机控制信号Reset和所述空比区控制信号BL来生成开关控制信号SC。当所述关机控制信号Reset有效或空白区控制信号BL有效时，开关控制信号SC被控制为处于第一状态。当所述关机控制信号Reset和所述空白区控制信号BL都无效时，所述开关控制信号SC被控制为处于第二状态。
所述设定模块21先设定第一显示数据Data1和第二显示数据Data2。所 述设定模块21的控制端还接收输入控制信号。
所述双向开关SW包括控制端、第一输入端、第二输入端和输出端，其中，所述双向开关SW的控制端接收所述开关控制信号SC，所述双向开关SW的第一输入端与所述设定模块21连接，所述双向开关SW的第二输入端与所述输入模块20连接，所述双向开关SW的输出端与所述数据输入端Input连接。当所述开关控制信号SC处于第一状态并且所述关机控制信号Reset有效时，所述双向开关SW控制由所述设定模块21向所述数据输入端Input提供第一显示数据Data1。当所述开关控制信号SC处于第一状态并且所述空白区控制信号BL有效时，所述双向开关SW控制由所述设定模块21向所述数据输入端Input提供第二显示数据Data2。当所述开关控制信号SC处于第二状态时，所述双向开关SW控制由所述输入模块20向所述数据输入端Input提供正常的显示数据。
所述第一显示数据Data1的灰阶值为0。当所述数据输入端Input接收所述第二显示数据Data2时，能够在与该数据输入端Input连接的显示面板上显示灰阶画面。
如图5所示，根据本公开的一个实施例的数据输入单元采用开关控制信号生成模块来根据关机控制信号和空白区控制信号生成开关控制信号，根据开关控制信号来控制双向开关。由此，在关机控制信号有效时，能够控制由设定模块向数据输入端提供第一显示数据以在显示面板上显示黑画面，使得在关机时显示屏上呈现黑画面，从而可以避免使用者看到由于关机时序而产生的不需展现给使用者的影像；在空白区控制信号有效时，控制由设定模块向数据输入端提供第二显示数据以在显示面板上显示灰阶画面，即当处于两帧显示数据之间的空白区时插入灰阶画面以提升显示品质；在关机控制信号和空白区控制信号都无效时，控制由输入模块提供正常的显示数据。
根据一个实施例，所述开关控制信号生成模块可以包括或门。所述或门包括第一或门输入端、第二或门输入端和或门输出端，其中，所述第一或门输入端接收所述空白区控制信号，所述第二或门输入端接收所述关机控制信号的反相信号，所述或门输出端与所述双向开关的控制端连接。
下面结合图6至图8来进一步地描述本公开的数据输入单元。在图6至图8所示的示例中，所述数据输入单元向源极驱动电路的数据输入端提供下在常的显示数据。显示数据包括6位红色显示数据R0-R5、6位绿色显示数据 G0-G5以及6位蓝色显示数据B0-B5。即，显示数据的格式为6位3串差分输入信号。然而，应当理解到，输入到本公开的数据输入单元的显示数据不局限于上述的显示数据的位数、信号数据格式、信号串数以及源极驱动电路的驱动通道数目。
在如图6所示的示例中，数据输入单元可以包括输入模块20、设定模块21和选择模块。源极驱动电路包括数据寄存器DR，使得能够通过数据输入端Input接收来自数据输入单元的正常的显示数据。所述选择模块接收外部控制信号，其中，所述外部控制信号可以包括关机控制信号Reset，关机控制信号Reset在低电平时有效，在高电平时无效。所述选择模块可以包括双向开关SW。所述设定模块21预先设定第一显示数据Data1。如图6所示，例如，R0-R5的值、G0-G5的值，B0-B5的值可以全都为0。所述双向开关SW可以包括控制端、第一输入端A、第二输入端B和输出端C，其中，所述双向开关SW的控制端接收所述关机控制信号Reset，所述双向开关SW的第一输入端A与所述设定模块21连接，所述双向开关SW的第二输入端B与所述输入模块20连接，所述双向开关SW的输出端C与所述源极驱动电路的数据输入端Input连接。
当关机控制信号Reset的电位为低电平时，双向开关SW的第一输入端A与输出端C导通，使得设定模块21输出Data1至数据输入端Input，以在显示面板上显示黑画面。这样，在关机时显示屏上呈现黑画面，从而避免使用者看到由于关机时序而产生的不需展现给使用者的影像。当关机控制信号Reset的电位为高电平时，双向开关SW的第二输入端B与输出端C导通，使得输入模块输出正常的显示数据至数据输入端Input。
在图6中，R标示电阻，All标示图6内所有的寄存器。也就是说，在图6所示的示例中，所有寄存器硬件全部被设置为连接下拉电阻，所有寄存器中存储的值均被设置为0。
在如图7所示的示例，数据输入单元包括输入模块20、设定模块21和选择模块。源极驱动电路包括数据寄存器DR，使得能够通过数据输入端Input接收来自数据输入单元的正常的显示数据。所述选择模块接收外部控制信号，其中，所述外部控制信号可以包括空白区控制信号BL，空白区控制信号BL在高电平时有效，在低电平时无效。所述选择模块可以包括双向开关SW。所述设定模块21预先设定第二显示数据Data2。如图7所示，例如，R1-R5 的值、G1-G5的值，B1-B5的值全都为0，R0的值、G0的值和B0的值可以都为1。所述双向开关SW包括控制端、第一输入端A、第二输入端B和输出端C，其中，所述双向开关SW的控制端接收空白区控制信号BL，所述双向开关SW的第一输入端A与所述设定模块21连接，所述双向开关SW的第二输入端B与所述输入模块20连接，所述双向开关SW的输出端C与所述源极驱动电路的数据输入端Input连接。
当空白区控制信号BL的电位为高电平时，双向开关SW的第一输入端A与输出端C导通，使得设定模块21输出Data2至数据输入端Input，以在显示面板上显示灰阶画面，即当处于两帧显示数据之间的空白区时插入灰阶画面以提升显示品质。当空白区控制信号BL的电位为低电平时，双向开关SW的第二输入端B与输出端C导通，使得输入模块输出正常的显示数据至数据输入端Input。
在如图7所示的数据输入单元的示例中，源极驱动电路接收的R/L信号(即移位方向控制信号)为0。因此，在Data2中，红色显示数据R为100000，绿色显示数据G为100000，蓝色显示数据B为100000，即Data2的灰阶值为127，为中间灰阶。在空白区插入灰阶画面有利于两帧之间的灰阶过渡，并且有利于平衡整个显示区域内空白区数据线对周边像素电容的交互影响。
在图6和图7所示的数据输入单元的示例中，设定模块中存储的预定显示数据是固定的。预定显示数据可以在制作集成电路(Integrated Circuit)时根据需求由硬件来设置。然而，应当理解的是，设定模块中存储的预定显示数据也可以是根据需求而被定制为某个值，例如6位(bit)L0(000000)、L255(111111)或其他值。
在如图8所示的示例中，数据输入单元包括输入模块20、设定模块21和选择模块。源极驱动电路包括数据寄存器DR，使得能够通过数据输入端Input接收来自数据输入单元的正常的显示数据。所述选择模块接收外部控制信号。所述外部控制信号可以包括关机控制信号Reset和空白区控制信号BL。所述选择模块包括双向开关SW。
所述数据输入单元还可以包括开关控制信号生成模块。所述开关控制信号生成模块包括或门ORG。所述或门ORG包括第一或门输入端、第二或门输入端和或门输出端，其中，ORG的第一或门输入端接收空白区控制信号BL，ORG的第二或门输入端接收关机控制信号Reset的反相信号，ORG的 或门输出端与SW的控制端连接。或门ORG的或门输出端输出开关控制信号SC，其中，当关机控制信号Reset的电位为低电平或BL的电位为高电平时，或门ORG通过其或门输出端输出的开关控制信号SC为高电平，当关机控制信号Reset的电位为高电平和/或BL的电位为低电平时，或门ORG通过其或门输出端输出的开关控制信号SC为低电平。
所述设定模块21预先设定第一显示数据Data1和第二显示数据Data2，并且包括第一开关211、第二开关212和第三开关213，其中，所述第一开关211的控制端、所述第二开关212的控制端和所述第三开关213的控制端都被配置为接收关机控制信号Reset。当Reset的电位为低电平时，第一开关211控制R0的值为0，第一开关211控制G0的值为0，第一开关211控制B0的值为0。当Reset的电位为高电平时，第一开关211控制R0的值为1，第一开关211控制G0的值为1，第一开关211控制B0的值为1。R1-R5的值、G1-G5的值以及B1-B5的值都固定为0。
所述双向开关SW包括控制端、第一输入端A、第二输入端B和输出端C，其中，所述双向开关SW的控制端接收所述开关控制信号SC，所述双向开关SW的第一输入端A与所述设定模块21连接，所述双向开关SW的第二输入端B与所述输入模块20连接，所述双向开关SW的输出端C与所述源极驱动电路的数据输入端Input连接。
当或门ORG输出的开关控制信号SC为高电平时，双向开关SW的第一输入端A与数据输入端Input连接。此时，如果关控制信号Reset的电位为低电平，则设定模块21通过数据输入端Input向数据寄存器DR提供第一显示数据，在该第一显示数据中，R0-R5的值都为0，G0-G5的值都为0，并且B0-B5的值都为0。当开关控制信号SC和关控制信号Reset都为高电平时，设定模块21通过数据输入端Input向数据寄存器DR提供第二显示数据，在该第二显示数据中，R0的值、G0的值和B0的值都为1，R1-R5的值都为0，G1-G5的值都为0，并且B01-B5的值都为0。当或门ORG输出的开关控制信号SC为低电平时，双向开关SW的第二输入端B与Input连接，从而由输入模块20通过Input向数据寄存器DR提供正常的显示数据。
在如图8所示的数据输入单元的示例中，通过或门ORG根据关机控制信号Reset和空白区控制信号BL来生成开关控制信号SC，根据开关控制信号SC来控制双向开关。由此，在关机控制信号有效时，由设定模块向数据输入 端提供第一显示数据以在显示面板上显示黑画面，使得在关机时在显示屏上呈现黑画面，由此可以避免使用者看到由于关机时序而产生的不需展现给使用者的影像；在空白区控制信号有效时，由设定模块向数据输入端提供第二显示数据，以在显示面板上显示灰阶画面，即当处于两帧显示数据之间的空白区时插入灰阶画面以提升显示品质；在关机控制信号和空白区控制信号都无效时，由输入模块提供正常的显示数据。
在如图6、图7、图8所示的本公开的数据输入单元的示例中，所述输入模块20可以为输入信号接收器(Input Signal Receiver)。例如，所述输入模块20可以为Mini低压差分信号接收器。
图9示出根据本公开的实施例的数据输入方法，该方法包括：
步骤S1：由设定模块预先设定一个或多个预定显示数据；以及
步骤S2：由选择模块根据外部控制信号来选择由输入模块或设定模块向数据输入端输入显示数据。
在根据本公开的实施例的数据输入方法中，通过设定模块预先设定与特定显示需求相对应的一个或多个预定显示数据，然后通过选择模块根据外部控制信号来选择是否需要由设定模块向数据输入端提供显示数据，从而可以满足特定的显示需求，例如，可以在关机时在显示面板上显示黑画面，或者在两帧显示数据之间的空白区插入灰阶画面以提升显示品质。
根据一个实施例，所述数据输入端可以为源极驱动电路的数据输入端，也可以为向显示面板提供显示数据的其他电路单元的数据输入端。
根据一个实施例，所述外部控制信号可以包括关机控制信号，所述选择模块可以包括双向开关。步骤S1可以包括：设定模块预先设定第一显示数据，所述第一显示数据的灰阶值为0。步骤S2可以包括：当关机控制信号有效时，通过所述选择模块中的双向开关控制由所述设定模块向所述数据输入端提供第一显示数据，当所述关机控制信号无效时，通过所述选择模块中的双向开关控制由所述输入模块向所述数据输入端提供正常的显示数据。
根据一个实施例，所述外部控制信号可以包括空白区控制信号。步骤S1可以包括：设定模块预先设定第二显示数据，所述第二显示数据的灰阶值在预定范围内。步骤S2可以包括：当所述空白区控制信号有效时，通过所述选择模块中的双向开关控制由所述设定模块向所述数据输入端提供第二显示数据，当所述空白区控制信号无效时，通过所述选择模块中的双向开关控制由 所述输入模块向所述数据输入端提供正常的显示数据。当所述数据输入端接收所述第二显示数据时，能够控制在与该数据输入端连接的显示面板上显示灰阶画面。
根据另外的实施例，所述数据输入单元还可以包括开关控制信号生成模块，所述外部控制信号可以包括关机控制信号和空白区控制信号，所述选择模块可以包括双向开关。所述开关控制信号生成模块根据所述关机控制信号生成开关控制信号，其中，当所述关机控制信号有效或空白区控制信号有效时，控制开关控制信号处于第一状态，当所述关机控制信号和所述空白区控制信号都无效时，控制所述开关控制信号处于第二状态。所述设定模块预先设定第一显示数据和第二显示数据。所述设定模块的控制端还可以接收输入控制信号。所述双向开关包括控制端、第一输入端、第二输入端和输出端，其中，所述双向开关的控制端接收所述开关控制信号，所述双向开关的第一输入端与所述设定模块连接，所述双向开关的第二输入端与所述输入模块连接，所述双向开关的输出端与所述数据输入端连接。当所述开关控制信号处于第一状态并且所述关机控制信号有效时，双向开关控制由所述设定模块向所述数据输入端提供第一显示数据。当所述开关控制信号处于第一状态并所述空白区控制信号有效时，双向开关控制由所述设定模块向所述数据输入端提供第二显示数据。当所述开关控制信号处于第二状态时，双向开关控制由所述输入模块向所述数据输入端提供正常的显示数据。所述第一显示数据的灰阶值可以为0。当所述数据输入端接收所述第二显示数据时，能够控制在与该数据输入连接的显示面板上显示灰阶画面。
根据本公开的实施例，源极驱动电路可以包括数据输入端和如上所述的数据输入单元，所述数据输入单元控制由输入模块或设定模块向所述数据输入端提供显示数据。
根据本公开的实施例，显示装置可以包括上述的源极驱动电路。
在通用的源极驱动集成电路的基础上集成新的结构单元，并且通过集成电路的外部控制信号进行控制。由此，除正常的驱动功能之外，还可以实现其他特殊驱动功能，从而提升显示器件的性能和显示品质。
应当理解到，可以在不脱离本公开的原理的情况下作出若干改进和润饰，这些改进和润饰落入本公开的保护范围内。
本申请要求于2016年1月27日递交的中国专利申请第201610055243.4 号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (15)

  1. 一种数据输入单元，包括：
    输入模块，被配置为提供正常显示数据；
    设定模块，被配置为预先设定一个或多个预定显示数据；以及
    选择模块，被配置为根据一个或多个外部控制信号来选择是由所述输入模块向数据输入端提供正常显示数据，还是由所述设定模块向数据输入端提供特定的预定显示数据。
  2. 如权利要求1所述的数据输入单元，其中，
    当在所述一个或多个外部控制信号中存在有效的外部控制信号时，所述选择模块控制由所述设定模块向数据输入端提供与有效的控制信号相对应的预定显示数据，
    当所述一个或多个外部控制信号均无效时，所述选择模块控制由所述输入模块向数据输入端提供正常显示数据。
  3. 如权利要求1或2所述的数据输入单元，其中，
    所述外部控制信号包括关机控制信号，并且所述设定模块被配置为预先设定灰阶值为0的第一预定显示数据；
    当所述关机控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第一预定显示数据；
    当所述关机控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  4. 如权利要求1或2所述的数据输入单元，其中，
    所述外部控制信号包括空白区控制信号，并且所述设定模块被配置为预先设定灰阶值在预定范围内的第二预定显示数据；
    当所述空白区控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第二预定显示数据，以便在与该数据输入端连接的显示面板上显示灰阶画面；
    当所述空白区控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  5. 如权利要求1或2所述的数据输入单元，其中，
    所述外部控制信号包括关机控制信号和空白区控制信号，并且所述设定 模块被配置为预先设定灰阶值为0的第一预定显示数据以及灰阶值在预定范围内的第二预定显示数据；
    当所述关机控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第一预定显示数据；
    当所述空白区控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第二预定显示数据，以便在与该数据输入端连接的显示面板上显示灰阶画面；
    当所述关机控制信号和所述空白区控制信号都无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  6. 如权利要求5所述的数据输入单元，还包括：
    开关控制信号生成模块，被配置为根据所述关机控制信号和所述空白区控制信号来生成开关控制信号，其中，当所述关机控制信号有效或空白区控制信号有效时，控制开关控制信号处于第一状态，当所述关机控制信号和所述空白区控制信号都无效时，控制所述开关控制信号处于第二状态；
    其中，当所述开关控制信号处于第一状态并且所述关机控制信号有效时，控制由所述设定模块向所述数据输入端提供第一预定显示数据，当所述开关控制信号处于第一状态并所述空白区控制信号有效时，控制由所述设定模块向所述数据输入端提供第二预定显示数据，以便在与该数据输入端连接的显示面板上显示灰阶画面，当所述开关控制信号处于第二状态时，控制由所述输入模块向所述数据输入端提供正常显示数据。
  7. 如权利要求6所述的数据输入单元，其中，所述开关控制信号生成模块包括：
    或门，其第一或门输入端接收所述空白区控制信号，其第二或门输入端接收所述关机控制信号的反相信号，其或门输出端与所述选择模块连接。
  8. 如权利要求1至7中的任一项所述的数据输入单元，其中，所述选择模块包括：
    双向开关，其控制端接收所述一个或多个外部控制信号或者根据一个或多个外部控制信号得到的控制信号，其第一输入端与所述设定模块连接，其第二输入端与所述输入模块连接，其输出端与所述数据输入端连接。
  9. 一种数据输入方法，包括：
    由设定模块预先设定一个或多个预定显示数据；
    由选择模块根据一个或多个外部控制信号来选择是由输入模块向数据输入端提供正常显示数据，还是由所述设定模块向数据输入端提供特定的预定显示数据。
  10. 如权利要求9所述的数据输入方法，其中，
    当在所述一个或多个外部控制信号中存在有效的外部控制信号时，所述选择模块控制由所述设定模块向数据输入端提供与有效的控制信号相对应的预定显示数据，
    当所述一个或多个外部控制信号均无效时，所述选择模块控制由所述输入模块向数据输入端提供正常显示数据。
  11. 如权利要求9或10所述的数据输入方法，其中，
    所述外部控制信号包括关机控制信号，并且所述设定模块被配置为预先设定灰阶值为0的第一预定显示数据；
    当所述关机控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第一预定显示数据；
    当所述关机控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  12. 如权利要求9或10所述的数据输入方法，其中，
    所述外部控制信号包括空白区控制信号，并且所述设定模块被配置为预先设定灰阶值在预定范围内的第二预定显示数据；
    当所述空白区控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第二显示数据，以便在与该数据输入端连接的显示面板上显示灰阶画面；
    当所述空白区控制信号无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  13. 如权利要求9或10所述的数据输入方法，其中，
    所述外部控制信号包括关机控制信号和空白区控制信号，并且所述设定模块被配置为预先设定灰阶值为0的第一预定显示数据以及灰阶值在预定范围内的第二预定显示数据；
    当所述关机控制信号有效时，所述选择模块控制由所述设定模块向所述数据输入端提供第一预定显示数据；
    当所述空白区控制信号有效时，所述选择模块控制由所述设定模块向所 述数据输入端提供第二预定显示数据，以便在与该数据输入端连接的显示面板上显示灰阶画面；
    当所述关机控制信号和所述空白区控制信号都无效时，所述选择模块控制由所述输入模块向所述数据输入端提供正常显示数据。
  14. 一种源极驱动电路，包括数据输入端以及如权利要求1至8中任一项所述的数据输入单元。
  15. 一种显示装置，包括如权利要求14所述的源极驱动电路。
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