CN107331365B - Source driver, display device and elimination method of display split screen - Google Patents
Source driver, display device and elimination method of display split screen Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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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
- 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
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a source driver, a display device and a method for eliminating display split screen thereof, wherein the source driver comprises a plurality of source driving chips; the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip; the source electrode driving chips respectively comprise a gamma voltage receiving module, a gamma voltage compensation module, a voltage division circuit, a display data receiving module and a digital-to-analog conversion circuit. The invention discloses a source driver, a display device and a method for eliminating display split screen thereof.A set value of gamma reference voltage is determined according to the routing of an array substrate of a source driving chip and is compensated; the split screen phenomenon can be effectively prevented, corresponding setting is carried out aiming at the loading distribution condition in the design stage, and the gamma reference voltage loss is compensated.
Description
Technical Field
The invention relates to the technical field of display, in particular to a source driver, a display device and a method for eliminating display split screens of the display device.
Background
In recent years, the user's pursuit for the display effect of the display device has been increasing, and display devices with higher and higher resolutions have been popular with users. The higher the resolution, the less the loss of the image displayed by the display device. The resolution of the display device is increased more and more rapidly, however, the improvement speed of the chip process cannot track the improvement speed of the resolution of the display device, so that two or more driving chips are often used for display driving in the high-resolution display device.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems: due to the fact that the frame of the display panel is narrow, the impedance of wires (Wire On Array, WOA) of the Array substrate is different, and therefore the screen splitting phenomenon exists among corresponding areas of different driving chips during display; the existing solution is realized by reducing the load by adjusting the driving capability or changing the inversion method, and the like, but the solution acts on the whole display area, and the influence caused by the solution is not eliminated according to the loading distribution.
Disclosure of Invention
The invention mainly aims to provide a source driver, a display device and a method for eliminating display split screens of the display device, and aims to solve the problems in the prior art.
To achieve the above object, a first aspect of embodiments of the present invention provides a source driver, which includes a plurality of source driver chips; the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source electrode driving chips respectively comprise a gamma voltage receiving module, a gamma voltage compensation module, a voltage division circuit, a display data receiving module and a digital-to-analog conversion circuit;
the gamma voltage receiving module is used for receiving gamma reference voltage;
the gamma voltage compensation module is used for acquiring a set value of a gamma reference voltage from an external memory and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage; compensating the gamma reference voltage received by the gamma voltage receiving module according to the compensation value of the gamma reference voltage, and outputting the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit;
the digital-analog conversion circuit is used for converting the display data received by the display data receiving module into analog data voltage according to the gamma reference voltage divided by the voltage dividing circuit.
Optionally, the gamma voltage compensation module includes a compensation amount setting unit and a gamma voltage compensation unit;
the compensation amount setting unit is used for acquiring a set value of the gamma reference voltage from an external memory and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage;
the gamma voltage compensation unit is configured to compensate the gamma reference voltage received by the gamma voltage receiving module according to a compensation value of the gamma reference voltage, and output the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit.
Optionally, the compensation amount setting unit obtains the set value of the gamma reference voltage from an external memory through an I2C bus signal line.
Optionally, the display data receiving module is a register;
the register is used for receiving display data and registering the display data.
Optionally, the source driving chip further includes a buffer;
the analog data voltage converted by the digital-analog conversion circuit is transmitted to the pixel array through the buffer to generate a picture.
In addition, to achieve the above object, a second aspect of embodiments of the present invention provides a display device including the source driver of the first aspect, and a display panel connected to the source driver.
Optionally, the display panel is a liquid crystal display panel or an organic electroluminescent display panel.
Furthermore, to achieve the above object, a third aspect of the embodiments of the present invention provides a method for eliminating split display of a display device, where the method includes:
the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source driving chip acquires a set value of a gamma reference voltage from an external memory and outputs an analog data voltage, including the steps of:
acquiring a set value of a gamma reference voltage from an external memory, and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage;
compensating the received gamma reference voltage according to the compensation value of the gamma reference voltage, and dividing the compensated gamma reference voltage;
the received display data is converted into an analog data voltage according to the divided gamma reference voltage.
Alternatively, the set value of the gamma reference voltage is acquired from an external memory through an I2C bus signal line.
Alternatively, the converted analog data voltage is transferred to the pixel array through a buffer to generate a picture.
According to the source driver, the display device and the method for eliminating the display split screen, the set value of the gamma reference voltage is determined according to the array substrate routing of the source driving chip and compensation is carried out; the split screen phenomenon can be effectively prevented, corresponding setting is carried out aiming at the loading distribution condition in the design stage, and the gamma reference voltage loss is compensated.
Drawings
Fig. 1 is a schematic structural diagram of a source driver according to a first embodiment of the invention;
FIG. 2 is a schematic diagram of a gamma voltage compensation module of a source driver according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of another source driver according to the first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the display device according to the first embodiment of the present invention before the display split is eliminated;
FIG. 5 is a schematic structural diagram of the display device according to the first embodiment of the present invention after the display split is eliminated;
fig. 6 is a schematic structural diagram of a display device according to a second embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
In the following description, numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of the devices are described in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
First embodiment
Fig. 1 is a schematic structural diagram of a source driver according to a first embodiment of the invention. As shown in fig. 1, a source driver according to a first embodiment of the present invention includes a plurality of source driver chips (shown as source driver chip 1-source driver chip n in the figure); the plurality of source driving chips respectively obtain the set values of the corresponding gamma reference voltages from the external memory 115 to make the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source driving chips each include a gamma voltage receiving module 110, a gamma voltage compensating module 111, a voltage dividing circuit 112, a display data receiving module 113, and a digital-to-analog converting circuit 114;
a gamma voltage receiving module 110 for receiving a gamma reference voltage;
a gamma voltage compensation module 111 for obtaining a set value of a gamma reference voltage from the external memory 115, and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage; compensating the gamma reference voltage received by the gamma voltage receiving module according to the compensation value of the gamma reference voltage, and outputting the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit;
fig. 2 is a schematic structural diagram of a gamma voltage compensation module in a source driver according to a first embodiment of the invention. Referring to fig. 2, in the present embodiment, the gamma voltage compensation module 111 includes a compensation amount setting unit 1110 and a gamma voltage compensation unit 1112;
a compensation amount setting unit 1110 for acquiring a set value of the gamma reference voltage from the external memory 115, and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage; in this embodiment, the compensation amount setting unit 1110 may also be specifically set to a plurality of adjustable gears for the gamma voltage compensation module 111 to select, for example: 000 gears: compensation is not carried out; 001 gear: 5mv is increased; 010 gears: 10mv increase; 011 gear: 15mv increase; 100 gear: 5mv reduction; 101 gear: the reduction is 10 mv; 110 gear: the reduction is 15 mv; 111 gear: and (6) reserving. The compensation value of each gear can be manually set according to different requirements.
In the present embodiment, the compensation amount setting unit acquires the set value of the gamma reference voltage from the external memory 115 through the I2C bus signal line.
The gamma voltage compensation unit 1112 is configured to compensate the gamma reference voltage received by the gamma voltage receiving module according to a compensation value of the gamma reference voltage, and output the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit.
A digital-to-analog conversion circuit 114 for converting the display data received by the display data receiving module 113 into an analog data voltage according to the gamma reference voltage divided by the voltage dividing circuit.
In this embodiment, the display data receiving module 113 is a register; the register is used for receiving the display data and registering the display data.
In this embodiment, the source driver chip further includes a buffer;
the analog data voltage converted by the digital-analog conversion circuit is transmitted to the pixel array through the buffer to generate a picture.
FIG. 3 is another structural diagram of the Source driver according to the first embodiment of the present invention, as shown in FIG. 3, the Source driver chip Source IC1-IC4 can read the setting value in the external memory EEPROM through the I2C bus signal lines SDA and SCL.
FIG. 4 is a schematic structural diagram of the display device according to the first embodiment of the present invention before the display split is eliminated; fig. 5 is a schematic structural diagram of the display device according to the first embodiment of the invention after the display split is eliminated. To further illustrate the embodiments of the present invention, reference will now be made in detail to fig. 4-5 as examples.
Referring to FIG. 4, it is assumed that the Source driver includes 4 Source driver chips, Source ICs 1-4. It can be seen from the figure that, in the Source IC2 and the Source IC3, the gamma lines are short (shown as b and c in the figure), the impedance is small, the loss of input voltage is small, and the output picture is not distorted; in the Source IC1 and Source IC4, the gamma line is too long (shown as a and d in the figure), so the impedance is large, the input voltage loss is large, and the output image is distorted.
Due to the difference of the wiring impedance, the screen splitting phenomenon exists between the corresponding areas of different Source ICs during display: in the figure, L127 represents the input of the display panel as 127 gray levels, and L123 represents the input of the display panel as 123 gray levels.
Therefore, different gamma reference voltage set values are determined according to routing of the Source IC, and the set values are burnt into an external memory EEPROM in a Code mode so that each IC can read corresponding parameters.
After the Source driver chip Source IC1-IC4 reads a set value, the gamma voltage compensation module in the Source IC compensates the received gamma reference voltage according to the set compensation amount, and then the gamma reference voltage is used by the digital-to-analog conversion circuit for output, so that the output voltages of the digital-to-analog conversion circuits of all Source ICs are kept consistent.
The gamma reference voltage is compensated according to the set compensation amount and is output to the pixel array through the digital-to-analog conversion circuit to generate a picture, and the generated picture can refer to fig. 5, and it can be seen from fig. 5 that the split screen phenomenon does not exist.
According to the source driver provided by the embodiment of the invention, the set value of the gamma reference voltage is determined and compensated according to the array substrate routing of the source driving chip; the split screen phenomenon can be effectively prevented, corresponding setting is carried out aiming at the loading distribution condition in the design stage, and the gamma reference voltage loss is compensated. The embodiment of the invention can also independently control each source driving chip and carry out corresponding compensation and correction aiming at the difference caused by loading so as to meet the image quality requirement.
Second embodiment
Fig. 6 is a schematic structural diagram of a display device according to a second embodiment of the present invention, and referring to fig. 6, the display device includes a display panel 201, a source driver 202, a gate driver 203, and a timing controller 204. The display panel 201 includes a plurality of pixels (not shown). The source driver 202 is used for transmitting a driving voltage to the display panel 2011 through the data line 205, so that the display panel 201 displays a correct picture according to the driving voltage. The gate driver 203 is used to turn on the gate line 206 at an appropriate time, so that the source driver 202 transmits the driving voltage to an appropriate row of pixels. The timing controller 204 is used for controlling the timing by the timing control signal 207 to determine when to transmit the driving voltage and when to turn on the gate line 206.
The specific structure of the source driver 202 can refer to the first embodiment, and is not described herein.
In the present embodiment, the display panel is a liquid crystal display panel. Similarly, the display panel may be an organic electroluminescent display panel in other embodiments, which are not limited herein.
According to the display device provided by the embodiment of the invention, the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip and is compensated; the split screen phenomenon can be effectively prevented, corresponding setting is carried out aiming at the loading distribution condition in the design stage, and the gamma reference voltage loss is compensated.
Third embodiment
A third embodiment of the present invention provides a method for eliminating a split display of a display device, including:
the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source driving chip acquires a set value of a gamma reference voltage from an external memory and outputs an analog data voltage, including the steps of:
acquiring a set value of a gamma reference voltage from an external memory, and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage;
in the present embodiment, the set value of the gamma reference voltage is acquired from the external memory through the I2C bus signal line.
Compensating the received gamma reference voltage according to the compensation value of the gamma reference voltage, and dividing the compensated gamma reference voltage;
the received display data is converted into an analog data voltage according to the divided gamma reference voltage.
In the present embodiment, the converted analog data voltage is transferred to the pixel array through the buffer to generate a picture.
According to the method for eliminating the display split screen of the display device, the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip and compensation is carried out; the split screen phenomenon can be effectively prevented, corresponding setting is carried out aiming at the loading distribution condition in the design stage, and the gamma reference voltage loss is compensated. The embodiment of the invention can also independently control each source driving chip and carry out corresponding compensation and correction aiming at the difference caused by loading so as to meet the image quality requirement.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A source driver, wherein the source driver comprises a plurality of source driver chips; the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source electrode driving chips respectively comprise a gamma voltage receiving module, a gamma voltage compensation module, a voltage division circuit, a display data receiving module and a digital-to-analog conversion circuit;
the gamma voltage receiving module is used for receiving gamma reference voltage;
the gamma voltage compensation module is used for acquiring a set value of a gamma reference voltage from an external memory and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage; compensating the gamma reference voltage received by the gamma voltage receiving module according to the compensation value of the gamma reference voltage, and outputting the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit;
the digital-analog conversion circuit is used for converting the display data received by the display data receiving module into analog data voltage according to the gamma reference voltage divided by the voltage dividing circuit.
2. The source driver of claim 1, wherein the gamma voltage compensation module comprises a compensation amount setting unit and a gamma voltage compensation unit;
the compensation amount setting unit is used for acquiring a set value of the gamma reference voltage from an external memory and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage;
the gamma voltage compensation unit is configured to compensate the gamma reference voltage received by the gamma voltage receiving module according to a compensation value of the gamma reference voltage, and output the compensated gamma reference voltage to the digital-to-analog conversion circuit through the voltage division circuit.
3. The source driver of claim 2, wherein the offset setting unit obtains the set value of the gamma reference voltage from the external memory through an I2C bus signal line.
4. The source driver of claim 1, wherein the display data receiving module is a register;
the register is used for receiving display data and registering the display data.
5. The source driver of claim 1, wherein the source driver chip further comprises a buffer;
the analog data voltage converted by the digital-analog conversion circuit is transmitted to the pixel array through the buffer to generate a picture.
6. A display device characterized by comprising the source driver according to any one of claims 1 to 5, and a display panel connected to the source driver.
7. The display device according to claim 6, wherein the display panel is a liquid crystal display panel or an organic electroluminescent display panel.
8. A method for eliminating display split of a display device is characterized by comprising the following steps:
the source driving chips respectively acquire set values of corresponding gamma reference voltages from an external memory so as to keep the output analog data voltages consistent; the set value of the gamma reference voltage is determined according to the array substrate routing of the source electrode driving chip;
the source driving chip acquires a set value of a gamma reference voltage from an external memory and outputs an analog data voltage, including the steps of:
acquiring a set value of a gamma reference voltage from an external memory, and determining a compensation value of the gamma reference voltage according to the set value of the gamma reference voltage;
compensating the received gamma reference voltage according to the compensation value of the gamma reference voltage, and dividing the compensated gamma reference voltage;
the received display data is converted into an analog data voltage according to the divided gamma reference voltage.
9. The method as claimed in claim 8, wherein the gamma reference voltage setting is obtained from an external memory through an I2C bus signal line.
10. The method as claimed in claim 8, wherein the converted analog data voltage is transmitted to the pixel array via the buffer to generate the picture.
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| CN201710763060.2A CN107331365B (en) | 2017-08-30 | 2017-08-30 | Source driver, display device and elimination method of display split screen |
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| CN109243355B (en) * | 2018-10-24 | 2021-04-06 | 惠科股份有限公司 | Gamma voltage correction circuit, method and display device |
| US10861377B2 (en) | 2018-10-24 | 2020-12-08 | HKC Corporation Limited | Gamma voltage correction circuit, method and display device |
| CN109346025A (en) * | 2018-12-18 | 2019-02-15 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display device |
| CN110136665A (en) * | 2019-04-30 | 2019-08-16 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted Multi-screen display system driving method and device |
| CN110737140B (en) * | 2019-10-31 | 2022-12-13 | 厦门天马微电子有限公司 | Display panel, control method thereof and display device |
| WO2021207889A1 (en) * | 2020-04-13 | 2021-10-21 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111696470A (en) * | 2020-07-10 | 2020-09-22 | 京东方科技集团股份有限公司 | Display module and display device |
| CN115298729A (en) * | 2021-03-03 | 2022-11-04 | 京东方科技集团股份有限公司 | Display panel signal adjusting method, control panel, display panel and storage medium |
| CN113066433B (en) * | 2021-03-24 | 2022-07-19 | 京东方科技集团股份有限公司 | Driving circuit of display panel, display module, compensation method of display module and display device |
| CN113284467B (en) * | 2021-05-18 | 2022-09-09 | 京东方科技集团股份有限公司 | Source driver and gamma voltage compensation method thereof, display module and display device |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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