WO2019080377A1 - 一种显示装置、驱动装置及驱动方法 - Google Patents
一种显示装置、驱动装置及驱动方法Info
- Publication number
- WO2019080377A1 WO2019080377A1 PCT/CN2018/072438 CN2018072438W WO2019080377A1 WO 2019080377 A1 WO2019080377 A1 WO 2019080377A1 CN 2018072438 W CN2018072438 W CN 2018072438W WO 2019080377 A1 WO2019080377 A1 WO 2019080377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage dividing
- voltage
- dividing unit
- resistor
- gamma reference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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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
-
- 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
-
- 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
-
- 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
- G09G2310/0291—Details of output amplifiers or buffers 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
-
- 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
- G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD
Definitions
- the embodiment of the present invention belongs to the field of display technologies, and in particular, to a display device, a driving device, and a driving method.
- TCON Transmission Controller, timing controller or screen driver board
- Sourece The Driver IC and the Gate Driver IC are output to the display panel to drive the display panel.
- the driving voltage output from the source driving chip to the display panel is generally generated by setting a plurality of voltage dividing resistors connected in series in the source driving chip, and inputting the source driving chip through the voltage dividing resistors.
- the gamma reference voltage is divided, and then the driving voltage corresponding to each gray scale of the display panel is output. Due to some instability and objective error factors in the manufacturing process of the display device, the actual resistance of the voltage dividing resistor is expected and expected. The design resistance will be biased, which will cause the actual output driving voltage to deviate from the expected design voltage value, thus affecting the gray scale of the display panel.
- a first aspect of the embodiments of the present disclosure provides a driving apparatus, including:
- n first voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage;
- n second voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage, the first of the ith first voltage dividing unit The end is connected to the first end of the i-th second voltage dividing unit and leads to the ith voltage output end, the second end of the i-th first voltage dividing unit and the second end of the ith second voltage dividing unit Connecting and extracting the i+1th voltage output terminal;
- n ⁇ i ⁇ 1 and n and i are positive integers.
- the first voltage dividing unit includes at least one first resistor
- the second voltage dividing unit includes at least one second resistor
- the first voltage dividing unit includes a first resistor, and the n first resistors corresponding to the n first voltage dividing units are sequentially connected in series;
- the second voltage dividing unit includes a second resistor, and the n second resistors corresponding to the n second voltage dividing units are sequentially connected in series.
- the first end of the ith first resistor is coupled to the first end of the ith second resistor and leads to the ith voltage output terminal;
- the second end of the ith first resistor is coupled to the second end of the ith second resistor and leads to the ith+1th voltage output.
- the driving device is applied to a display device, the display device including a buffer control module that generates the first gamma reference voltage and the second gamma reference voltage.
- the buffer control module is any one of a programmable gamma buffer, a buffer amplifier, or an operational amplifier.
- the driving device further includes:
- the jth third voltage dividing unit is connected between the second end of the jth first voltage dividing unit and the j+1 voltage output end;
- the jth fourth voltage dividing unit is connected between the second end of the jth second voltage dividing unit and the j+1 voltage output end;
- the third voltage dividing unit includes at least one third resistor
- the fourth voltage dividing unit includes at least one fourth resistor
- the first voltage dividing unit includes a first resistor
- the second voltage dividing unit includes a second resistor
- the third voltage dividing unit includes a third resistor
- the press unit includes a fourth resistor
- a second aspect of the embodiments of the present disclosure further provides a driving method of a display device, where the display device includes a source driving module, and the driving method includes:
- n first voltage dividing units in the source driving module, so that the n first voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage;
- n second voltage dividing units in the source driving module, so that the n second voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage;
- n ⁇ i ⁇ 1 and n and i are positive integers.
- the first voltage dividing unit includes at least one first resistor
- the second voltage dividing unit includes at least one second resistor
- the first voltage dividing unit includes a first resistor, and the n first resistors corresponding to the n first voltage dividing units are sequentially connected in series;
- the second voltage dividing unit includes a second resistor, and the n second resistors corresponding to the n second voltage dividing units are sequentially connected in series.
- the first end of the ith first resistor is coupled to the first end of the ith second resistor and leads to the ith voltage output terminal;
- the second end of the ith first resistor is coupled to the second end of the ith second resistor and leads to the ith+1th voltage output.
- the display device includes a buffer control module that generates the first gamma reference voltage and the second gamma reference voltage.
- the buffer control module is any one of a programmable gamma buffer, a buffer amplifier, or an operational amplifier.
- the driving method further includes:
- the third voltage dividing unit includes at least one third resistor
- the fourth voltage dividing unit includes at least one fourth resistor
- the first voltage dividing unit includes a first resistor
- the second voltage dividing unit includes a second resistor
- the third voltage dividing unit includes a third resistor
- the press unit includes a fourth resistor
- the source drive mode is a thin film source drive chip.
- An embodiment of the present solution further provides a display device, including:
- a buffer control module configured to output a first gamma reference voltage and a second gamma reference voltage
- a source driving module respectively connected to the display panel and the buffer control module, configured to drive the display panel according to the first gamma reference voltage and the second gamma reference voltage;
- the driving device is disposed in the source driving module, and configured to input the first gamma reference voltage and the second gamma reference voltage and divide the voltage, and output the same through the voltage output terminal A voltage signal corresponding to each gray scale of the display panel is displayed to the display panel.
- two sets of voltage dividing units connected in series are arranged in the driving device, and two sets of voltage dividing units connected in series are connected between the first gamma reference voltage and the second gamma reference voltage, so that the two components are
- the two voltage dividing units corresponding to the position in the pressing unit are connected, and the voltage output end is taken out from the wiring midpoint of the two divided voltage dividing units for outputting the driving voltage signal to the display panel, which can effectively reduce the voltage dividing resistance.
- the influence of the resistance deviation on the gray scale of the display panel improves the display effect.
- FIG. 1 is a schematic structural view of a driving device provided by an embodiment of the present solution
- FIG. 2 is a schematic structural diagram of a driving device provided by another embodiment of the present solution.
- FIG. 3 is a flowchart of a driving method of a display device according to an embodiment of the present solution
- FIG. 4 is a flowchart of a driving method of a display device according to another embodiment of the present solution.
- FIG. 5 is a schematic structural diagram of a display device according to an embodiment of the present solution.
- an embodiment of the present solution provides a driving apparatus 100 including n first voltage dividing units and n second voltage dividing units, wherein n ⁇ 1 and n is a positive integer.
- the first voltage dividing unit and the second voltage dividing unit may be any electronic component or a combination of a plurality of electronic components capable of realizing a voltage dividing function, for example, a combination of one resistor or a plurality of resistors.
- the first voltage dividing unit includes at least one first resistor and the second voltage dividing unit includes at least one second resistor.
- the first voltage dividing unit and the second voltage dividing unit are the same device.
- the first voltage dividing unit and the second voltage dividing unit are both resistors, and the n first voltage dividing units are exemplarily represented as a first resistor Ra1 and a first resistor Ra2 in FIG. 1 .
- the first resistor Ran; the n second voltage dividing units are exemplarily shown in FIG. 1 as a second resistor Rb1, a second resistor Rb2, ..., a second resistor Rbn.
- connection relationship between the voltage dividing units in the driving device 100 provided in this embodiment is:
- first voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage, that is, the first resistor Ra1, the first resistor Ra2, ..., the first resistor Ran Connected in series, the first end of the first resistor Ra1 is connected to the first gamma reference voltage, and the second end of the first resistor Ran is connected to the second gamma reference voltage;
- the n second voltage dividing units are sequentially connected in series and connected between the first gamma reference voltage and the second gamma reference voltage, that is, the second resistor Rb1, the second resistor Rb2, ..., and the second resistor Rbn are sequentially connected in series a first end of the second resistor Rb1 is connected to the first gamma reference voltage, and a second end of the second resistor Rbn is connected to the second gamma reference voltage;
- the first end of the i-th first voltage dividing unit is connected to the first end of the i-th second voltage dividing unit and leads to the ith voltage output end, that is, the first end of the first resistor Rai and the second resistor Rbi The first end is connected and leads to the ith voltage output terminal;
- the second end of the i-th first voltage dividing unit is connected to the second end of the i-th second voltage dividing unit and leads to the (i+1)th voltage output end, that is, the second end of the first resistor Rai and the second resistor
- the second end of the Rbi is connected and leads to the (i+1)th voltage output terminal;
- n ⁇ i ⁇ 1 and i is a positive integer.
- the voltage calculation method of a voltage output terminal is as follows:
- the voltage of the first voltage output terminal the first gamma reference voltage
- the voltage at the n+1th voltage output terminal the second gamma reference voltage.
- the first gamma reference voltage and the second gamma reference voltage may be generated by a buffer control module of the display device, and the buffer control module may specifically be a programmable gamma buffer (P-Gamma) One of IC, buffer amplifier or operational amplifier.
- P-Gamma programmable gamma buffer
- two sets of voltage dividing units connected in series are arranged in the driving device, and two sets of voltage dividing units connected in series are connected between the first gamma reference voltage and the second gamma reference voltage, so that the two components are
- the two voltage dividing units corresponding to the position in the pressing unit are connected, and the voltage output end is taken out from the wiring midpoint of the two divided voltage dividing units for outputting the driving voltage signal to the display panel, which can effectively reduce the voltage dividing resistance.
- the influence of the resistance deviation on the gray scale of the display panel improves the display effect.
- the driving device 100 further includes n-1 third voltage dividing units and n-1 fourth voltage dividing units.
- the third voltage dividing unit and the fourth voltage dividing unit may be any electronic component or a combination of a plurality of electronic components capable of realizing a voltage dividing function, for example, a combination of one resistor or a plurality of resistors.
- the third voltage dividing unit includes at least one third resistor
- the fourth voltage dividing unit includes at least one fourth resistor
- the third voltage dividing unit and the fourth voltage dividing unit are the same device.
- the third voltage dividing unit and the fourth voltage dividing unit are both resistors, and the n third voltage dividing units are exemplarily represented in FIG. 1 as the third resistor Rc1 and the third resistor Rc2.
- the third resistor Rcn; the n fourth voltage dividing units are exemplarily shown in FIG. 1 as a fourth resistor Rd1, a fourth resistor Rd2, ..., a fourth resistor Rdn.
- connection relationship between the voltage dividing units in the driving device 100 provided in this embodiment is:
- the jth third voltage dividing unit Rcj is connected between the second end of the jth first voltage dividing unit Raj and the j+1th voltage output end;
- the jth fourth voltage dividing unit Rdj is connected between the second end of the jth second voltage dividing unit Rbj and the j+1 voltage output end;
- an embodiment of the present solution provides a driving method of a display device, which is applied to a display device, and the display device includes a source driving module.
- the source driving module may be any device or circuit having a data driving function on a pixel of the display panel, for example, a source driving chip (Source) Driver IC) or thin film source driver chip (S-COF, Source-Chip On Film) and so on.
- a source driving chip Source
- S-COF thin film source driver chip
- the driving method includes:
- Step S10 setting n first voltage dividing units in the source driving module, so that the n first voltage dividing units are sequentially connected in series and connected to the first gamma reference voltage and the second gamma reference voltage. between;
- Step S20 setting n second voltage dividing units in the source driving module, so that the n second voltage dividing units are sequentially connected in series and connected to the first gamma reference voltage and the second gamma reference voltage. between;
- Step S30 connecting the first end of the i-th first voltage dividing unit and the first end of the i-th second voltage dividing unit, and extracting the ith voltage output end, so that the first i-th voltage dividing unit is The second end is connected to the second end of the i-th second voltage dividing unit and leads to the (i+1)th voltage output terminal;
- n ⁇ i ⁇ 1 and n and i are positive integers.
- the first voltage dividing unit and the second voltage dividing unit may be any electronic component or a combination of a plurality of electronic components capable of realizing a voltage dividing function, for example, a combination of one resistor or a plurality of resistors.
- the first voltage dividing unit includes at least one first resistor and the second voltage dividing unit includes at least one second resistor.
- the first voltage dividing unit and the second voltage dividing unit are the same device.
- the circuit realized by the above method is the driving device shown in FIG.
- the driving method further includes:
- Step S40 setting n-1 third voltage dividing units in the source driving module, and connecting the jth third voltage dividing unit to the second end of the jth first voltage dividing unit and the j+1th Between the voltage outputs;
- Step S50 setting n-1 fourth voltage dividing units in the source driving module, and connecting the jth fourth voltage dividing unit to the second end of the jth second voltage dividing unit and the j+1th Between the voltage outputs;
- the third voltage dividing unit and the fourth voltage dividing unit may be any electronic component or a combination of a plurality of electronic components capable of realizing a voltage dividing function, for example, a combination of one resistor or a plurality of resistors.
- the third voltage dividing unit includes at least one third resistor
- the fourth voltage dividing unit includes at least one fourth resistor
- the third voltage dividing unit and the fourth voltage dividing unit are the same device.
- the circuit realized by the above method is the driving device shown in FIG. 2.
- an embodiment of the present solution provides a display device 200 including a display panel 201, a buffer control module 202, a source driving module 203, and the driving device 100 in the above embodiment.
- the display panel can be any type of display panel, for example based on TFT-LCD (Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display, liquid crystal display panel based on LCD (liquid crystal display) technology, based on OLED (Organic Electroluminescence display panel of organic electroluminescence display technology, quantum dot light-emitting diode display panel based on QLED (Quantum Dot Light Emitting Diodes) technology, or curved display panel.
- TFT-LCD Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display
- LCD liquid crystal display
- OLED Organic Electroluminescence display panel of organic electroluminescence display technology
- QLED Quantum Dot Light Emitting Diodes
- the buffer control module 202 is configured to output a first gamma reference voltage and a second gamma reference voltage.
- the buffer control module may be any device capable of outputting the first gamma reference voltage and the second gamma reference voltage, for example, specifically, a programmable gamma buffer (P-Gamma) One of IC, buffer amplifier or operational amplifier.
- P-Gamma programmable gamma buffer
- the source driving module 203 is respectively connected to the display panel 201 and the buffer control module 202 for driving the display panel 201 according to the first gamma reference voltage and the second gamma reference voltage.
- the source driving module may be any device or circuit having a data driving function on a pixel of the display panel, for example, a source driving chip (Source) Driver IC) or thin film source driver chip (S-COF, Source-Chip On Film) and so on.
- a source driving chip Source
- S-COF thin film source driver chip
- the driving device 100 is disposed in the source driving module 203 for inputting the first gamma reference voltage and the second gamma reference voltage and dividing the voltage, and outputting, by the voltage output end, corresponding to each gray scale of the display panel 201
- the voltage signal is to the display panel 201.
- the modules in all embodiments of the solution can be through a general-purpose integrated circuit, such as a CPU (Central Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
- a CPU Central Processing Unit
- central processing unit central processing unit
- ASIC Application Specific Integrated Circuit
- the steps in the method of the embodiment of the present solution may be sequentially adjusted, merged, and deleted according to actual needs.
- the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only) Memory, ROM) or random storage memory (Random Access Memory, RAM), etc.
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- 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)
- Liquid Crystal Display Device Control (AREA)
- Control Of El Displays (AREA)
Abstract
一种显示装置(200)、驱动装置(100)及驱动方法,其中,驱动装置(100),包括:n个第一分压单元(Ra1, Ra2,……, Ran),n个第一分压单元(Ra1, Ra2,……, Ran)依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;n个第二分压单元(Rb1, Rb2,……, Rbn),n个第二分压单元(Rb1, Rb2,……, Rbn)依次串接后连接在第一伽马参考电压和第二伽马参考电压之间,第i个第一分压单元(Rai)的第一端和第i个第二分压单元(Rbi)的第一端相连接并引出第i电压输出端,第i个第一分压单元(Rai)的第二端和第i个第二分压单元(Rbi)的第二端相连接并引出第i+1电压输出端;其中,n≥i≥1且n、i为正整数。
Description
本方案实施例属于显示技术领域,尤其涉及一种显示装置、驱动装置及驱动方法。
随着显示技术的不断发展,液晶面板、显示器等显示设备不断向着轻薄化、大屏化、低功耗、低成本的方向发展。常见的显示产品通常都是通过PCB板(Printed Circuit Board,印制电路板)上的TCON(Timing Controller,时序控制器或屏驱动板)对驱动信号和控制信号进行处理后,通过源极驱动芯片(Sourece
Driver IC)和栅极驱动芯片(Gate Driver IC)输出到显示面板,以实现对显示面板的驱动。
现有技术中源极驱动芯片输出到显示面板的驱动电压的生成方式,通常都是通过在源极驱动芯片中设置串联的多个分压电阻,通过这些分压电阻对源极驱动芯片输入的伽马参考电压进行分压,然后输出与显示面板的各灰阶对应的驱动电压,由于显示装置制程中的一些不稳定性和客观误差因素的影响,使得分压电阻的实际阻值与预期的设计阻值会有偏差,导致实际输出的驱动电压与预期的设计电压值有一定偏差,从而对显示面板的灰阶造成一定影响。
本方案实施例第一方面提供一种驱动装置,其包括:
n个第一分压单元,所述n个第一分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;
n个第二分压单元,所述n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间,第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端;
其中,n≥i≥1且n、i为正整数。
在一个实施例中,所述第一分压单元包括至少一个第一电阻,所述第二分压单元包括至少一个第二电阻。
在一个实施例中,所述第一分压单元包括一个第一电阻,n个所述第一分压单元所对应的n个所述第一电阻依次串接;
所述第二分压单元包括一个第二电阻,n个所述第二分压单元所对应的n个所述第二电阻依次串接。
在一个实施例中,第i个第一电阻的第一端和第i个第二电阻的第一端相连接并引出所述第i电压输出端;
第i个第一电阻的第二端和第i个第二电阻的第二端相连接并引出所述第i+1电压输出端。
在一个实施例中,所述驱动装置应用于显示装置,所述显示装置包括缓冲控制模块,所述缓冲控制模块产生所述第一伽马参考电压和所述第二伽马参考电压。
在一个实施例中,所述缓冲控制模块为可编程伽马缓冲器、缓冲放大器或运算放大器中的任一种。
在一个实施例中,所述驱动装置还包括:
n-1个第三分压单元,第j个第三分压单元连接在第j个第一分压单元的第二端和第j+1电压输出端之间;
n-1个第四分压单元,第j个第四分压单元连接在第j个第二分压单元的第二端和第j+1电压输出端之间;
其中,j≤n-1且j为正整数。
在一个实施例中,所述第三分压单元包括至少一个第三电阻,所述第四分压单元包括至少一个第四电阻。
在一个实施例中,所述第一分压单元包括一个第一电阻,所述第二分压单元包括一个第二电阻,所述第三分压单元包括一个第三电阻,所述第四分压单元包括一个第四电阻。
本方案实施例第二方面还提供一种显示装置的驱动方法,所述显示装置包括源极驱动模块,所述驱动方法包括:
在所述源极驱动模块中设置n个第一分压单元,使所述n个第一分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;
在所述源极驱动模块中设置n个第二分压单元,使所述n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;
使第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,使第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端;
其中,n≥i≥1且n、i为正整数。
在一个实施例中,所述第一分压单元包括至少一个第一电阻,所述第二分压单元包括至少一个第二电阻。
在一个实施例中,所述第一分压单元包括一个第一电阻,n个所述第一分压单元所对应的n个所述第一电阻依次串接;
所述第二分压单元包括一个第二电阻,n个所述第二分压单元所对应的n个所述第二电阻依次串接。
在一个实施例中,第i个第一电阻的第一端和第i个第二电阻的第一端相连接并引出所述第i电压输出端;
第i个第一电阻的第二端和第i个第二电阻的第二端相连接并引出所述第i+1电压输出端。
在一个实施例中,所述显示装置包括,缓冲控制模块,所述缓冲控制模块产生所述第一伽马参考电压和所述第二伽马参考电压。
在一个实施例中,所述缓冲控制模块为可编程伽马缓冲器、缓冲放大器或运算放大器中的任一种。
在一个实施例中,所述驱动方法还包括:
在所述源极驱动模块中设置n-1个第三分压单元,使第j个第三分压单元连接在第j个第一分压单元的第二端和第j+1电压输出端之间;
在所述源极驱动模块中设置n-1个第四分压单元,使第j个第四分压单元连接在第j个第二分压单元的第二端和第j+1电压输出端之间;
其中,j≤n-1且j为正整数。
在一个实施例中,所述第三分压单元包括至少一个第三电阻,所述第四分压单元包括至少一个第四电阻。
在一个实施例中,所述第一分压单元包括一个第一电阻,所述第二分压单元包括一个第二电阻,所述第三分压单元包括一个第三电阻,所述第四分压单元包括一个第四电阻。
在一个实施例中,所述源极驱动模为薄膜源极驱动芯片。
本方案的一个实施例中还提供一种显示装置,其包括:
显示面板;
缓冲控制模块,用于输出第一伽马参考电压和第二伽马参考电压;
源极驱动模块,分别与所述显示面板和所述缓冲控制模块连接,用于根据所述第一伽马参考电压和所述第二伽马参考电压对所述显示面板进行驱动;以及
上述的驱动装置,设置在所述源极驱动模块中,用于输入所述第一伽马参考电压和所述第二伽马参考电压并进行分压后,通过所述电压输出端输出与所述显示面板的各灰阶对应的电压信号至所述显示面板。
本方案实施例通过在驱动装置中设置两组串联的分压单元,并使两组串联的分压单元都连接在第一伽马参考电压和第二伽马参考电压之间,使两组分压单元中位置对应的两个分压单元相连接,并从相连接的两个分压单元的接线中点引出电压输出端,用于输出驱动电压信号至显示面板,可以有效降低分压电阻的阻值偏差对显示面板的灰阶的影响,提高显示效果。
为了更清楚地说明本方案实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本方案的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本方案的一个实施例提供的驱动装置的结构示意图;
图2是本方案的另一个实施例提供的驱动装置的结构示意图;
图3是本方案的一个实施例提供的显示装置的驱动方法的流程图;
图4是本方案的另一个实施例提供的显示装置的驱动方法的流程图;
图5是本方案的一个实施例提供的显示装置的结构示意图。
为了使本技术领域的人员更好地理解本方案方案,下面将结合本方案实施例中的附图,对本方案实施例中的技术方案进行清楚地描述,显然,所描述的实施例是本方案一部分的实施例,而不是全部的实施例。基于本方案中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本方案保护的范围。
本方案的说明书和权利要求书及上述附图中的术语“包括”以及它们任何变形,意图在于覆盖不排他的包含。例如包含一系列步骤或单元的过程、方法或系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外,术语“第一”、“第二”和“第三”等是用于区别不同对象,而非用于描述特定顺序。
如图1所示,本方案的一个实施例提供一种驱动装置100,其包括n个第一分压单元和n个第二分压单元,其中,n≥1且n为正整数。
在具体应用中,第一分压单元和第二分压单元可以为能够实现分压功能的任意电子元器件或多个电子元器件的组合,例如,一个电阻或多个电阻的组合结构。
在一个实施例中,第一分压单元包括至少一个第一电阻,第二分压单元包括至少一个第二电阻。
在一个实施例中,第一分压单元和第二分压单元为相同的器件。
如图1中,示例性的示出第一分压单元和第二分压单元均为电阻,n个第一分压单元在图1中示例性的表示为第一电阻Ra1、第一电阻Ra2、……、第一电阻Ran;n个第二分压单元在图1中示例性的表示为第二电阻Rb1、第二电阻Rb2、……、第二电阻Rbn。
本实施例所提供的驱动装置100中各分压单元之间的连接关系为:
n个第一分压单元依次串接后连接在第一伽马(Gamma)参考电压和第二伽马参考电压之间,即第一电阻Ra1、第一电阻Ra2、……、第一电阻Ran依次串接,第一电阻Ra1的第一端接第一伽马参考电压,第一电阻Ran的第二端接第二伽马参考电压;
n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间,即第二电阻Rb1、第二电阻Rb2、……、第二电阻Rbn依次串接,第二电阻Rb1的第一端接第一伽马参考电压,第二电阻Rbn的第二端接第二伽马参考电压;
第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,即第一电阻Rai的第一端和第二电阻Rbi的第一端相连接并引出第i电压输出端;
第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端,即第一电阻Rai的第二端和第二电阻Rbi的第二端相连接并引出第i+1电压输出端;
其中,n≥i≥1且i为正整数。
在本实施例中,根据图1所示的驱动装置结构可知个电压输出端的电压计算方式如下:
第1电压输出端的电压=第一伽马参考电压;
第2电压输出端的电压=(第一电阻Ra1的第二端的电压Va1+第二电阻Rb1的第二端的电压Vb1)/2;其中,Va1=第一伽马参考电压-Ra1*(第一伽马参考电压-第二伽马参考电压)/(Ra1+Ra2+……+ Ran),Vb1=第一伽马参考电压-Rb1*(第一伽马参考电压-第二伽马参考电压)/(Rb1+Rb2+……+ Rbn);
第3电压输出端的电压=(第一电阻Ra2的第二端的电压Va2+第二电阻Rb2的第二端的电压Vb2)/2;其中,Va2=第一伽马参考电压-(Ra1+Ra2)*(第一伽马参考电压-第二伽马参考电压)/(Ra1+Ra2+……+ Ran),Vb2=第一伽马参考电压-(Rb1+ Rb2) *(第一伽马参考电压-第二伽马参考电压)/(Rb1+Rb2+……+ Rbn);
第4电压输出端的电压=(第一电阻Ra3的第二端的电压Va3+第二电阻Rb3的第二端的电压Vb3)/2;其中,Va3=第一伽马参考电压-(Ra1+Ra2+Ra3)*(第一伽马参考电压-第二伽马参考电压)/(Ra1+Ra2+……+ Ran),Vb3=第一伽马参考电压-(Rb1+ Rb2+Rb3) *(第一伽马参考电压-第二伽马参考电压)/(Rb1+Rb2+……+ Rbn);
其他各电压输出端的电压以此类推;
第n+1电压输出端的电压=第二伽马参考电压。
在具体应用中,第一伽马参考电压和第二伽马参考电压可以由显示装置的缓冲控制模块产生,该缓冲控制模块具体可以为可编程伽马缓冲器(P-Gamma
IC)、缓冲放大器或运算放大器中的一种。
本方案实施例通过在驱动装置中设置两组串联的分压单元,并使两组串联的分压单元都连接在第一伽马参考电压和第二伽马参考电压之间,使两组分压单元中位置对应的两个分压单元相连接,并从相连接的两个分压单元的接线中点引出电压输出端,用于输出驱动电压信号至显示面板,可以有效降低分压电阻的阻值偏差对显示面板的灰阶的影响,提高显示效果。
如图2所示,在本方案的一个实施例中,驱动装置100还包括n-1个第三分压单元和n-1个第四分压单元。
在具体应用中,第三分压单元和第四分压单元可以为能够实现分压功能的任意电子元器件或多个电子元器件的组合,例如,一个电阻或多个电阻的组合结构。
在一个实施例中,第三分压单元包括至少一个第三电阻,第四分压单元包括至少一个第四电阻。
在一个实施例中,第三分压单元和第四分压单元为相同的器件。
如图1中,示例性的示出第三分压单元和第四分压单元均为电阻,n个第三分压单元在图1中示例性的表示为第三电阻Rc1、第三电阻Rc2、……、第三电阻Rcn;n个第四分压单元在图1中示例性的表示为第四电阻Rd1、第四电阻Rd2、……、第四电阻Rdn。
本实施例所提供的驱动装置100中各分压单元之间的连接关系为:
第j个第三分压单元Rcj连接在第j个第一分压单元Raj的第二端和第j+1电压输出端之间;
第j个第四分压单元Rdj连接在第j个第二分压单元Rbj的第二端和第j+1电压输出端之间;
其中,j≤n-1且j为正整数。
如图3所示,本方案的一个实施例提供一种显示装置的驱动方法,其应用于显示装置,显示装置包括源极驱动模块。
在具体应用中,源极驱动模块可以是任意的具有对显示面板的像素进行数据驱动功能的任意器件或电路,例如,源极驱动芯片(Source
Driver IC)或薄膜源极驱动芯片(S-COF,Source-Chip
on Film)等。
所述驱动方法包括:
步骤S10:在所述源极驱动模块中设置n个第一分压单元,使所述n个第一分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;
步骤S20:在所述源极驱动模块中设置n个第二分压单元,使所述n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;
步骤S30:使第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,使第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端;
其中,n≥i≥1且n、i为正整数。
在具体应用中,第一分压单元和第二分压单元可以为能够实现分压功能的任意电子元器件或多个电子元器件的组合,例如,一个电阻或多个电阻的组合结构。
在一个实施例中,第一分压单元包括至少一个第一电阻,第二分压单元包括至少一个第二电阻。
在一个实施例中,第一分压单元和第二分压单元为相同的器件。
在具体应用中,当第一分压单元和第二分压单元为电阻时,通过上述方法所实现的电路即为图1所示的驱动装置。
如图4所示,在本方案的一个实施例中,上述驱动方法还包括:
步骤S40:在所述源极驱动模块中设置n-1个第三分压单元,使第j个第三分压单元连接在第j个第一分压单元的第二端和第j+1电压输出端之间;
步骤S50:在所述源极驱动模块中设置n-1个第四分压单元,使第j个第四分压单元连接在第j个第二分压单元的第二端和第j+1电压输出端之间;
其中,j≤n-1且j为正整数。
在具体应用中,第三分压单元和第四分压单元可以为能够实现分压功能的任意电子元器件或多个电子元器件的组合,例如,一个电阻或多个电阻的组合结构。
在一个实施例中,第三分压单元包括至少一个第三电阻,第四分压单元包括至少一个第四电阻。
在一个实施例中,第三分压单元和第四分压单元为相同的器件。
在具体应用中,当第一分压单元和第二分压单元为电阻时,通过上述方法所实现的电路即为图2所示的驱动装置。
如图5所示,本方案的一个实施例,提供一种显示装置200,其包括显示面板201、缓冲控制模块202、源极驱动模块203和上述实施例中的驱动装置100。
在具体应用中,显示面板可以为任意类型的显示面板,例如基于TFT-LCD(Thin
Film Transistor Liquid Crystal Display,薄膜晶体管液晶显示器)技术的液晶显示面板、基于LCD( Liquid Crystal Display,液晶显示装置)技术的液晶显示面板、基于OLED(Organic
Electroluminesence Display,有机电激光显示)技术的有机电激光显示面板、基于QLED(Quantum Dot Light Emitting Diodes,量子点发光二极管)技术的量子点发光二极管显示面板或曲面显示面板等。
缓冲控制模块202,用于输出第一伽马参考电压和第二伽马参考电压。
在具体应用中,缓冲控制模块可以是任意能够输出第一伽马参考电压和第二伽马参考电压的器件,例如,具体可以为可编程伽马缓冲器(P-Gamma
IC)、缓冲放大器或运算放大器中的一种。
源极驱动模块203,分别与显示面板201和缓冲控制模块202连接,用于根据第一伽马参考电压和第二伽马参考电压对显示面板201进行驱动。
在具体应用中,源极驱动模块可以是任意的具有对显示面板的像素进行数据驱动功能的任意器件或电路,例如,源极驱动芯片(Source
Driver IC)或薄膜源极驱动芯片(S-COF,Source-Chip
on Film)等。
驱动装置100,设置在源极驱动模块203中,用于输入第一伽马参考电压和第二伽马参考电压并进行分压后,通过电压输出端输出与显示面板201的各灰阶对应的电压信号至显示面板201。
本方案所有实施例中的模块,可以通过通用集成电路,例如CPU(Central
Processing Unit,中央处理器),或通过ASIC
(Application Specific Integrated Circuit,专用集成电路)来实现。
本方案实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only
Memory,ROM)或随机存储记忆体(Random
Access Memory,RAM)等。
以上所述仅为本方案的较佳实施例而已,并不用以限制本方案,凡在本方案的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本方案的保护范围之内。
Claims (20)
- 一种驱动装置,包括:n个第一分压单元,所述n个第一分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;n个第二分压单元,所述n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间,第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端;其中,n≥i≥1且n、i为正整数。
- 如权利要求1所述的驱动装置,其中,所述第一分压单元包括至少一个第一电阻,所述第二分压单元包括至少一个第二电阻。
- 如权利要求2所述的驱动装置,其中,所述第一分压单元包括一个第一电阻,n个所述第一分压单元所对应的n个所述第一电阻依次串接;所述第二分压单元包括一个第二电阻,n个所述第二分压单元所对应的n个所述第二电阻依次串接。
- 如权利要求3所述的驱动装置,其中,第i个第一电阻的第一端和第i个第二电阻的第一端相连接并引出所述第i电压输出端;第i个第一电阻的第二端和第i个第二电阻的第二端相连接并引出所述第i+1电压输出端。
- 如权利要求1所述的驱动装置,其中,所述驱动装置应用于显示装置,所述显示装置包括缓冲控制模块,所述缓冲控制模块产生所述第一伽马参考电压和所述第二伽马参考电压。
- 如权利要求5所述的驱动装置,其中,所述缓冲控制模块为可编程伽马缓冲器、缓冲放大器或运算放大器中的任一种。
- 如权利要求1所述的驱动装置,其中,所述驱动装置还包括:n-1个第三分压单元,第j个第三分压单元连接在第j个第一分压单元的第二端和第j+1电压输出端之间;n-1个第四分压单元,第j个第四分压单元连接在第j个第二分压单元的第二端和第j+1电压输出端之间;其中,j≤n-1且j为正整数。
- 如权利要求7所述的驱动装置,其中,所述第三分压单元包括至少一个第三电阻,所述第四分压单元包括至少一个第四电阻。
- 如权利要求8所述的驱动装置,其中,所述第一分压单元包括一个第一电阻,所述第二分压单元包括一个第二电阻,所述第三分压单元包括一个第三电阻,所述第四分压单元包括一个第四电阻。
- 一种显示装置的驱动方法,其中,所述显示装置包括源极驱动模块,所述驱动方法包括:在所述源极驱动模块中设置n个第一分压单元,使所述n个第一分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;在所述源极驱动模块中设置n个第二分压单元,使所述n个第二分压单元依次串接后连接在第一伽马参考电压和第二伽马参考电压之间;使第i个第一分压单元的第一端和第i个第二分压单元的第一端相连接并引出第i电压输出端,使第i个第一分压单元的第二端和第i个第二分压单元的第二端相连接并引出第i+1电压输出端;其中,n≥i≥1且n、i为正整数。
- 如权利要求10所述的显示装置的驱动方法,其中,所述第一分压单元包括一个第一电阻,n个所述第一分压单元所对应的n个所述第一电阻依次串接;所述第二分压单元包括一个第二电阻,n个所述第二分压单元所对应的n个所述第二电阻依次串接。
- 如权利要求11所述的显示装置的驱动方法,其中,第i个第一电阻的第一端和第i个第二电阻的第一端相连接并引出所述第i电压输出端;第i个第一电阻的第二端和第i个第二电阻的第二端相连接并引出所述第i+1电压输出端。
- 如权利要求10所述的显示装置的驱动方法,其中,所述第一伽马参考电压和所述第二伽马参考电压由所述显示装置的缓冲控制模块产生。
- 如权利要求13所述的显示装置的驱动方法,其中,所述缓冲控制模块为可编程伽马缓冲器、缓冲放大器或运算放大器中的任一种。
- 如权利要求10所述的显示装置的驱动方法,其中,所述第一分压单元包括至少一个第一电阻,所述第二分压单元包括至少一个第二电阻。
- 如权利要求10所述的显示装置的驱动方法,其中,所述驱动方法还包括:在所述源极驱动模块中设置n-1个第三分压单元,使第j个第三分压单元连接在第j个第一分压单元的第二端和第j+1电压输出端之间;在所述源极驱动模块中设置n-1个第四分压单元,使第j个第四分压单元连接在第j个第二分压单元的第二端和第j+1电压输出端之间;其中,j≤n-1且j为正整数。
- 如权利要求16所述的显示装置的驱动方法,其中,所述第三分压单元包括至少一个第三电阻,所述第四分压单元包括至少一个第四电阻。
- 如权利要求17所述的显示装置的驱动方法,其中,所述第一分压单元包括一个第一电阻,所述第二分压单元包括一个第二电阻,所述第三分压单元包括一个第三电阻,所述第四分压单元包括一个第四电阻。
- 如权利要求10所述的显示装置的驱动方法,其中,所述源极驱动模为薄膜源极驱动芯片。
- 一种显示装置,其包括:显示面板;缓冲控制模块,用于输出第一伽马参考电压和第二伽马参考电压;源极驱动模块,分别与所述显示面板和所述缓冲控制模块连接,用于根据所述第一伽马参考电压和所述第二伽马参考电压对所述显示面板进行驱动;以及如权利要求1所述的驱动装置,设置在所述源极驱动模块中,用于输入所述第一伽马参考电压和所述第二伽马参考电压并进行分压后,通过所述电压输出端输出与所述显示面板的各灰阶对应的电压信号至所述显示面板。
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| CN113409732B (zh) * | 2021-06-30 | 2022-08-02 | 惠州华星光电显示有限公司 | 驱动电路以及驱动电路的驱动方法 |
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| JP3813463B2 (ja) * | 2000-07-24 | 2006-08-23 | シャープ株式会社 | 液晶表示装置の駆動回路及びそれを用いた液晶表示装置並びにその液晶表示装置を用いた電子機器 |
| DE10162766A1 (de) * | 2001-12-20 | 2003-07-03 | Koninkl Philips Electronics Nv | Schaltungsanordnung zur Spannungsversorgung einer Flüssigkristallanzeigevorrichtung |
| JP2005037746A (ja) * | 2003-07-16 | 2005-02-10 | Mitsubishi Electric Corp | 画像表示装置 |
| JP4348318B2 (ja) * | 2005-06-07 | 2009-10-21 | シャープ株式会社 | 階調表示基準電圧発生回路および液晶駆動装置 |
| CN104036742B (zh) * | 2014-05-26 | 2016-07-20 | 京东方科技集团股份有限公司 | 伽玛参考电压产生电路、v-t曲线测试方法和显示装置 |
| CN106023930B (zh) * | 2016-07-20 | 2018-10-23 | 武汉华星光电技术有限公司 | 伽马电压生成电路及驱动装置 |
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- 2017-10-24 CN CN201711000442.6A patent/CN107705746A/zh active Pending
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- 2018-01-12 US US16/312,186 patent/US20190304354A1/en not_active Abandoned
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| CN1573425A (zh) * | 2003-06-17 | 2005-02-02 | 精工爱普生株式会社 | 伽马校正电路、液晶驱动电路、显示装置、以及电源电路 |
| CN101114425A (zh) * | 2006-07-26 | 2008-01-30 | 群康科技(深圳)有限公司 | 伽马电压输出电路 |
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