CN102750914B - Display module driving circuit, driving method and liquid crystal television - Google Patents
Display module driving circuit, driving method and liquid crystal television Download PDFInfo
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Abstract
The embodiment of the invention provides a display module driving circuit, a liquid crystal television and a display module driving method, relates to the field of electronic technology, and solves the technical problem in the prior art that a video processing chip is debugged with a heavy workload. The display module driving circuit comprises a data processing module, a GAMMA voltage generating module and a driving module, wherein the data processing module is used for processing an image displaying signal into a line synchronization signal, a field synchronization signal, a data driving signal and a scanning driving signal; the GAMMA voltage generating module is used for transmitting a GAMMA voltage corresponding to the GAMMA voltage value which is corrected according to a preset GAMMA curve to the driving module after receiving the line synchronization signal; and the driving module is used for generating a driving voltage by using the GAMMA voltage as the reference voltage according to the line synchronization signal, the field synchronization signal, the data driving signal and the scanning driving signal, and loading the driving voltage on pixels on a liquid crystal display module and corresponding to the line synchronization signal, the field synchronization signal and the scanning driving signal. The display module driving circuit, the liquid crystal television and the display module driving method are applied to improvement of the display effect of the liquid crystal television.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of display module driving circuit, display module driving method and be provided with the liquid crystal TV set of this display module driving circuit.
Background technology
Along with the develop rapidly of electronic technology, televisor has become one of household electrical appliance the most common in people's daily life, and at present, from strength to strength, popularity rate is also more and more higher for the function of liquid crystal TV set.
As shown in Figure 1, existing liquid crystal TV set, comprises display module driving circuit, LCD MODULE and backlight,
Backlight, for providing backlight for the pixel in LCD MODULE;
Display module driving circuit, for providing the data-signal of certain format for LCD MODULE, this data-signal is in order to control pixel transmittance rate, and the higher then brightness of pixel transmittance rate is also higher;
Display module driving circuit as shown in Figure 1, comprise video frequency processing chip and drive display module, video frequency processing chip comprises decoder module, GAMMA correction module and LVDS coding module, display module is driven to comprise TCON process chip, GAMMA voltage generation chip and driving chip, wherein:
Decoder module, for received television signal, and will input GAMMA correction module after television signal decoder;
GAMMA correction module, for the decoded TV signal of GAMMA curvature correction that basis presets, and inputs LVDS coding module by the TV signal after correcting;
LVDS coding module, for being input TCON process chip after the image display signal of LVDS form by the television signal coding after correcting;
TCON process chip, for being treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal by the image display signal of LVDS form;
GAMMA voltage generation chip, for sending GAMMA voltage to driving chip;
Driving chip, for with GAMMA voltage for reference voltage, generate driving voltage according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal, and driving voltage is loaded in pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal in LCD MODULE.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems:
Because in prior art, GAMMA correction module is arranged in video frequency processing chip, and by video frequency processing chip, the image display signal outputting to LCD MODULE is carried out to the method for GAMMA correction, need in video frequency processing chip, arrange look-up table (showing also known as: LOOKUP), corresponding relation data between look-up table storage internal register and brightness, the data volume of the data that look-up table uses is usually very large, and this method needs to be realized on complete machine by software algorithm, and the principle of work of video frequency processing chip in different video processing schemes, the timing mode of adjustment method and its inside is also variant, so the debugging work load of video frequency processing chip also can be larger,
In addition, because in said method, the debugging work load of video frequency processing chip is larger, in order to reduce debugging work load, usually a LCD MODULE model machine first to be used to debug video frequency processing chip, after having debugged video frequency processing chip, re-use this video frequency processing chip to carry out collocation with other multiple LCD MODULE respectively and use, due to the difference of manufacturer and production technology, cause each display effects of liquid crystal display module impossible completely the same, so a kind of video frequency processing chip and multiple different LCD MODULE are arranged in pairs or groups when using, the colour temperature comparison of coherence of LCD MODULE can be caused poor.
Summary of the invention
The embodiment of the present invention provides a kind of display module driving circuit on the one hand, provide a kind of liquid crystal TV set being provided with this display module driving circuit on the other hand, again on the one hand, additionally provide a kind of display module driving method, solve the technical matters that in prior art, the debugging work load of video frequency processing chip is larger.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The display module driving circuit that the embodiment of the present invention provides, the driver module comprising data processing module, the GAMMA voltage generation module be connected with described data processing module and be connected with described data processing module, described GAMMA voltage generation module respectively, wherein:
Described data processing module, for being treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal by image display signal;
Described GAMMA voltage generation module, for when receiving described line synchronizing signal, sends the corresponding GAMMA voltage of the GAMMA magnitude of voltage after according to the GAMMA curvature correction preset to described driver module;
Described driver module, for with described GAMMA voltage for reference voltage, and generate driving voltage according to described line synchronizing signal, described field sync signal, described data drive signal and described scanning drive signal, and described driving voltage is loaded in pixel corresponding with described line synchronizing signal, described field sync signal and described scanning drive signal in described LCD MODULE.
Further, the described GAMMA magnitude of voltage after correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the described GAMMA voltage corresponding with described R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the red GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the green GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the blue GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve.
Further, described driver module, for loading the pixel in the N-th row in described LCD MODULE with R group GAMMA voltage as reference voltage and the described driving voltage that generates, or, the pixel in the N-th row in described LCD MODULE is loaded with B group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+1 in described LCD MODULE loads with G group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+2 in described LCD MODULE loads with B group GAMMA voltage as reference voltage and the described driving voltage that generates, or pixel on capable to the N+2 in described LCD MODULE loads with R group GAMMA voltage as reference voltage and the described driving voltage that generates;
Wherein: described N >=1, and be natural number, described N is corresponding with described line synchronizing signal.
Further, described image display signal is LVDS form;
And/or described data processing module is TCON chip;
And/or described driver module is SOURCE driving chip;
And/or, described in the GAMMA curve that presets be GAMMA 2.2 or GAMMA 2.5 typical curve.
Further, described GAMMA voltage generation module, comprises data storage cell, magnitude of voltage output unit and data selection unit, wherein:
Described data storage cell, for storing the described GAMMA magnitude of voltage after according to the GAMMA curvature correction preset;
Described data selection unit, for receiving described line synchronizing signal, and after the described line synchronizing signal of reception, exports the memory address of described GAMMA magnitude of voltage or described GAMMA magnitude of voltage to described magnitude of voltage output unit;
Described magnitude of voltage output unit, for sending the GAMMA voltage corresponding with described GAMMA magnitude of voltage to described driver module.
Further, described GAMMA voltage generation module is GAMMA voltage generation chip;
And/or described data storage cell is buffer register;
And/or this display module driving circuit, also comprises the image signal processing blocks be connected with described data processing module, wherein:
Described processing television signals for received television signal, and is the described data processing module inputted after image display signal in described display module driving circuit by described image signal processing blocks.
This liquid crystal TV set, comprises display module driving circuit, LCD MODULE and the backlight described in the invention described above embodiment, wherein:
Described backlight, for providing backlight for the pixel in described LCD MODULE;
Described display module driving circuit, for providing for the pixel in described LCD MODULE the driving voltage controlling described pixel intensity.
This display module driving method, at least comprises the following steps:
Image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;
According to the GAMMA curvature correction GAMMA magnitude of voltage preset;
With the corresponding described GAMMA voltage of the described GAMMA magnitude of voltage after correction for reference voltage, and generate driving voltage according to described line synchronizing signal, described field sync signal, described data drive signal and described scanning drive signal, and described driving voltage is loaded in pixel corresponding with described line synchronizing signal, described field sync signal and described scanning drive signal in described LCD MODULE.
Further, according to the method for the GAMMA curvature correction GAMMA magnitude of voltage preset, comprise the following steps:
When S110, the described LCD MODULE of real-time detection show the GTG picture of different brackets, the brightness value of the GTG picture shown by described LCD MODULE;
S120, when the brightness value of the GTG picture detected does not meet corresponding with the GTG picture GAMMA curve preset, by the brightness value regulating the mode of GAMMA magnitude of voltage to regulate the GTG picture shown by described LCD MODULE;
S130, regulate GAMMA magnitude of voltage until when the brightness value of the GTG picture shown by described LCD MODULE detected in real time meets corresponding with the GTG picture GAMMA curve preset, GAMMA magnitude of voltage is now recorded as the GAMMA magnitude of voltage after correction.
Further, described step S110 is automatically performed by luminance test instrument, and described step S120, S130 are automatically performed by the GAMMA voltage generation module be connected with described luminance test instrument;
And/or the described GAMMA magnitude of voltage after correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the described GAMMA voltage corresponding with described R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the red GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the green GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in described LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the blue GTG picture of described LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
This display module driving method, further comprising the steps of:
Pixel in N-th row in described LCD MODULE is loaded with R group GAMMA voltage as reference voltage and the described driving voltage that generates, or, the pixel in the N-th row in described LCD MODULE is loaded with B group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+1 in described LCD MODULE loads with G group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+2 in described LCD MODULE loads with B group GAMMA voltage as reference voltage and the described driving voltage that generates, or pixel on capable to the N+2 in described LCD MODULE loads with R group GAMMA voltage as reference voltage and the described driving voltage that generates;
Wherein: described N >=1, and be natural number, described N is corresponding with described line synchronizing signal.
Compared with prior art, the embodiment of the present invention provide in above-mentioned arbitrary technical scheme and can produce at least following technique effect:
Due in the liquid crystal TV set that the embodiment of the present invention provides, GAMMA voltage generation module can send and the GAMMA voltage corresponding according to the GAMMA magnitude of voltage after the GAMMA curvature correction preset driver module, and driver module can with the GAMMA voltage corresponding to the GAMMA magnitude of voltage after correction for reference voltage, and according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal generate driving voltage, and driving voltage is loaded in LCD MODULE with line synchronizing signal, in field sync signal and pixel corresponding to scanning drive signal, and driving voltage can control transmittance and the brightness of pixel, as can be seen here, the control of the transmittance to the pixel in LCD MODULE can be realized by the mode correcting GAMMA magnitude of voltage in the embodiment of the present invention, and then the control realized display effects of liquid crystal display module, and use the operation of the GAMMA curvature correction GAMMA magnitude of voltage preset can to carry out in GAMMA voltage generation module, also can carry out outside GAMMA voltage generation module, such as, after can completing correct operation in the data processing equipment (such as computing machine) outside GAMMA voltage generation module, again the GAMMA magnitude of voltage after correction is stored in GAMMA voltage generation module and calls for GAMMA voltage generation module, without the need to carrying out GAMMA correction by video frequency processing chip to the image display signal outputting to LCD MODULE, so without the need to debugging video frequency processing chip, and then solve the technical matters that in prior art, the debugging work load of video frequency processing chip is larger,
Simultaneously, owing to not adopting the method for by video frequency processing chip, the image display signal outputting to LCD MODULE being carried out to GAMMA correction in the embodiment of the present invention, so require far below prior art the data storage capacity of video frequency processing chip and data processing performance, so compared with prior art, the display module driving circuit that the embodiment of the present invention provides and the liquid crystal TV set arranging this display module driving circuit also have the low advantage of cost;
In addition, owing to using the method for the operation of the GAMMA curvature correction GAMMA magnitude of voltage preset in the embodiment of the present invention compared with the method for existing debugging video frequency processing chip, data volume is less, debugging speed is faster, so the display module driving circuit that the embodiment of the present invention provides can directly need each and the LCD MODULE of its collocation is debugged, without the need to debugging LCD MODULE model machine in advance, and then the difference eliminated in the process can debugged separately for each LCD MODULE at display module driving circuit due to manufacturer and production technology, make the defect that each display effects of liquid crystal display module is not quite identical, and then better can ensure the colour temperature consistance of LCD MODULE.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of display module driving circuit in existing liquid crystal TV set and the annexation between LCD MODULE;
The schematic diagram of the annexation between a kind of embodiment of the display module driving circuit that Fig. 2 provides for the embodiment of the present invention and LCD MODULE;
The schematic diagram of the annexation between another embodiment and LCD MODULE of the display module driving circuit that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram of the annexation between another embodiment and LCD MODULE of the display module driving circuit that Fig. 4 provides for the embodiment of the present invention;
The schematic flow sheet of the display module driving method that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the concrete implementing procedure schematic diagram of step S1 in Fig. 5.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all belongs to the scope of protection of the invention.
Embodiments provide a kind of easy debugging, display module driving circuit with low cost and a kind of liquid crystal TV set being provided with this display module driving circuit.
As shown in Figure 2, the display module driving circuit that the embodiment of the present invention provides, the driver module 3 comprising data processing module 1, the GAMMA voltage generation module 2 be connected with data processing module 1 and be connected with data processing module 1, GAMMA voltage generation module 2 respectively, wherein:
Data processing module 1, for being treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal by image display signal;
GAMMA voltage generation module 2, for when receiving line synchronizing signal, sends the corresponding GAMMA voltage of the GAMMA magnitude of voltage after according to the GAMMA curvature correction preset to driver module 3;
Driver module 3, for with GAMMA voltage for reference voltage, and generate driving voltage according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal, and driving voltage is loaded in pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal in LCD MODULE 5.
Due in the liquid crystal TV set that the embodiment of the present invention provides, GAMMA voltage generation module 2 can send and the GAMMA voltage corresponding according to the GAMMA magnitude of voltage after the GAMMA curvature correction preset driver module 3, and driver module 3 can with the GAMMA voltage corresponding to the GAMMA magnitude of voltage after correction for reference voltage, and according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal generate driving voltage, and driving voltage is loaded in LCD MODULE 5 with line synchronizing signal, in field sync signal and pixel corresponding to scanning drive signal, and driving voltage can control transmittance and the brightness of pixel, as can be seen here, the control of the transmittance to the pixel in LCD MODULE 5 can be realized by the mode correcting GAMMA magnitude of voltage in the embodiment of the present invention, and then the control realized LCD MODULE 5 display effect, and use the operation of the GAMMA curvature correction GAMMA magnitude of voltage preset can to carry out in GAMMA voltage generation module 2, also can carry out outside GAMMA voltage generation module 2, such as, after can completing correct operation in the data processing equipment (such as computing machine) outside GAMMA voltage generation module 2, GAMMA magnitude of voltage after correction is stored in GAMMA voltage generation module 2 again and calls for GAMMA voltage generation module 2, without the need to carrying out GAMMA correction by video frequency processing chip to the image display signal outputting to LCD MODULE 5, so without the need to debugging video frequency processing chip, and then solve the technical matters that in prior art, the debugging work load of video frequency processing chip is larger,
Simultaneously, owing to not adopting the method for by video frequency processing chip, the image display signal outputting to LCD MODULE 5 being carried out to GAMMA correction in the embodiment of the present invention, so require far below prior art the data storage capacity of video frequency processing chip and data processing performance, so compared with prior art, the display module driving circuit that the embodiment of the present invention provides and the liquid crystal TV set arranging this display module driving circuit also have the low advantage of cost;
In addition, owing to using the method for the operation of the GAMMA curvature correction GAMMA magnitude of voltage preset in the embodiment of the present invention compared with the method for existing debugging video frequency processing chip, data volume is less, debugging speed is faster, so the display module driving circuit that the embodiment of the present invention provides can directly need each and the LCD MODULE 5 of its collocation is debugged, without the need to debugging LCD MODULE 5 model machine in advance, and then the difference eliminated in the process can debugged separately for each LCD MODULE 5 at display module driving circuit due to manufacturer and production technology, make the defect that each LCD MODULE 5 display effect is not quite identical, and then better can ensure the colour temperature consistance of LCD MODULE 5.
Line synchronizing signal, for determining the line number of the pixel that driving voltage loads, namely needs the line number of the pixel scanned;
Field sync signal, for determining that pixel is by the frame number scanned;
Data drive signal, for determining the size applying the driving voltage (this voltage is analog voltage) be loaded in pixel;
Scanning drive signal, for controlling the switch of thin film transistor (TFT) corresponding to each pixel, driving voltage regulates brightness by acting on thin film transistor (TFT) exactly.
GAMMA magnitude of voltage after correcting in the present embodiment comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the GAMMA voltage corresponding with R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the red GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve;
With the GAMMA voltage corresponding with G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the green GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve;
With the GAMMA voltage corresponding with B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the blue GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve.
When LCD MODULE 5 shows the redness of different brackets, green or blue GTG picture, the brightness of luminance test instrument to the GTG picture shown by it can be used to detect, there is proportional relationship in detected brightness value and transmitance, just can be calculated the value of transmitance by the brightness of measuring GTG picture.
Luminance test instrument is a kind of a kind of equipment being exclusively used in the brightness value detecting LCD MODULE when LCD MODULE 5 shows red GTG picture (usual 256) of different brackets.Certainly, other devices with brightness measuring ability or equipment also can be used in the present embodiment to carry out alternative luminance test instrument.
GAMMA curve is divided into three kinds, namely corresponding with red GTG picture GAMMA curve, the GAMMA curve corresponding with green GTG picture and the GAMMA curve corresponding with blue GTG picture, the horizontal ordinate of the GAMMA curve corresponding with red GTG picture represents the red GTG picture (256) of different brackets, ordinate represents that LCD MODULE 5 shows the value of the desirable transmitance of 256 different GTG pictures, in like manner, with green GTG picture, the horizontal ordinate of the GAMMA curve that blue GTG picture is corresponding represents the red GTG picture (256) of different brackets, blue GTG picture (256), ordinate represents that LCD MODULE 5 shows 256 different green GTG pictures, the value of the desirable transmitance of blue GTG picture.
When LCD MODULE 5 shows the GTG picture of different brackets, certain corresponding relation is there is between the value of the transmitance of the GTG picture shown by it and GAMMA magnitude of voltage, when LCD MODULE 5 measured by luminance test instrument, to show a certain color of different brackets (red, green or blue wherein a kind of) GTG picture time brightness value and the GAMMA curve of answering with this Color pair preset not to time corresponding then need to tune up or turn down GAMMA magnitude of voltage, when GAMMA magnitude of voltage is in a certain value, the luminance test instrument value of measuring transmitance when LCD MODULE 5 shows the GTG picture of this color of different brackets corresponding to brightness value with preset correspondingly or basic corresponding with the GAMMA curve that this Color pair is answered gone up (deviation is within allowable offset), then this time GAMMA magnitude of voltage, it is more satisfactory GAMMA magnitude of voltage, GAMMA magnitude of voltage after namely correcting.
When the driving voltage corresponding with the GAMMA magnitude of voltage through overcorrect loads in the pixel in LCD MODULE 5, the value of the transmitance corresponding to the brightness of the pixel in LCD MODULE 5 meets the GAMMA curve preset, and then relatively more suitable brightness can be provided for human eye, thus ensure that the image shown by LCD MODULE 5 seems each several part brightness ratio comparatively consistent and uniform.
In addition, carry out owing to utilizing GAMMA curve in prior art debugging or timing, do not consider the color of GTG picture shown in LCD MODULE 5, but, the GAMMA curve corresponding to transmittance of the red GTG picture that LCD MODULE 5 detects, wherein at least two GAMMA curves and preferred GAMMA typical curve (such as GAMMA2.2 typical curve) difference may be very large for the GAMMA curve corresponding to transmittance of green GTG picture and the GAMMA curve corresponding to transmittance of blue GTG picture, but difference after three GAMMA Curves compilations is also little, like this, when at least two GAMMA curves and preferred GAMMA typical curve difference larger time, the consistance of LCD MODULE 5 colour temperature can non-constant, very easily there is the situation of certain GTG colour cast, and in the embodiment of the present invention according to GAMMA curvature correction GAMMA magnitude of voltage time, R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage are all correct respectively according to the color of different GTG picture to obtain, so the GAMMA curve corresponding to transmittance of the red GTG picture detected in LCD MODULE 5 can be ensured, the green GAMMA curve corresponding to transmittance of GTG picture and the GAMMA curve corresponding to transmittance of blue GTG picture are all meet preferred GAMMA typical curve, and then can ensure that the consistance of LCD MODULE 5 colour temperature is better further.
Driver module 3 in the present embodiment, for according to spacing color mixed principle, pixel in N-th row in LCD MODULE 5 is loaded with R group GAMMA voltage as reference voltage and the driving voltage that generates, or, the pixel in the N-th row in LCD MODULE 5 is loaded with B group GAMMA voltage as reference voltage and the driving voltage that generates;
Pixel on capable to the N+1 in LCD MODULE 5 loads with G group GAMMA voltage as reference voltage and the driving voltage that generates;
Pixel on capable to the N+2 in LCD MODULE 5 loads with B group GAMMA voltage as reference voltage and the driving voltage that generates, or pixel on capable to the N+2 in LCD MODULE 5 loads with R group GAMMA voltage as reference voltage and the driving voltage that generates;
Wherein: N >=1, and be natural number, N is corresponding with line synchronizing signal.
In general, with the driving voltage that R group GAMMA voltage generates for benchmark, the driving voltage generated for benchmark with G group GAMMA voltage and with B group GAMMA voltage for the driving voltage that benchmark generates loads in the pixel in LCD MODULE 5 simultaneously, and then when driving each pixel, the display effect performance of LCD MODULE 5 is the most perfect, but under the mode of the rgb pixel left-right situs of current main-stream, the method can increase design difficulty and the manufacturing cost of driver module 3, so in the present embodiment driver module 3 according to spacing color mixed principle, pixel in LCD MODULE 5 is loaded successively respectively line by line to the driving voltage generated for benchmark with R group GAMMA voltage, the driving voltage generated for benchmark with G group GAMMA voltage and generate for benchmark with B group GAMMA voltage driving voltage time, the design difficulty of driver module 3 can be reduced, and then reduce the cost of driver module 3.
Because common LCD MODULE 5 all comprises multirow pixel, and area is larger, the line number of the pixel that the LCD MODULE 5 that resolution is higher comprises is also more, repeat to load line by line the driving voltage generated for benchmark with R group GAMMA voltage, the driving voltage generated for benchmark with G group GAMMA voltage and not only can save with the driving voltage that B group GAMMA voltage generates for benchmark the operation again correcting driving voltage value, and the consistance of display effect between LCD MODULE 5 adjacent lines can be ensured.
The GAMMA curve preset in the present embodiment is preferably GAMMA 2.2 typical curve.Facts have proved: when using the GAMMA magnitude of voltage meeting GAMMA 2.2 typical curve to load in the pixel in LCD MODULE 5, the display image frame of LCD MODULE 5 can give human eye with reasonable visual experience.Certainly, the GAMMA curve preset in the present embodiment also can according to producer or user need use GAMMA2.5 typical curve.
As shown in Figure 3, in the present embodiment, GAMMA voltage generation module 2, comprises data storage cell 21, data selection unit 23 and magnitude of voltage output unit 22, wherein:
Data storage cell 21, for storing the GAMMA magnitude of voltage after according to the GAMMA curvature correction preset;
Data selection unit 23, for receiving and identifying line synchronizing signal, exports the memory address of the GAMMA magnitude of voltage corresponding to line synchronizing signal or the GAMMA magnitude of voltage corresponding with line synchronizing signal to magnitude of voltage output unit 22;
Magnitude of voltage output unit 22, for sending the GAMMA voltage corresponding with GAMMA magnitude of voltage to driver module 3.
Data storage cell 21 both can be integrated in GAMMA voltage generation module 2, also can be the memory device (such as USB flash disk) that the outer and GAMMA voltage generation module 2 of GAMMA voltage generation module 2 removably connects.In the present embodiment, data storage cell 21 is preferably integrated in GAMMA voltage generation module 2.
The faster the better for the travelling speed of data selection unit 23 and magnitude of voltage output unit 22, at least should match with the transmission speed of line synchronizing signal.
In the present embodiment, GAMMA voltage generation module 2 is preferably GAMMA voltage generation chip,
And/or data storage cell 21 is preferably buffer register.
When GAMMA voltage generation module 2 uses GAMMA voltage generation chip, can be upgraded to the GAMMA voltage generation chip in existing liquid crystal TV set by the method for update software program and GAMMA magnitude of voltage, thus utilize existing resource more fully.
Buffer register both can as the terminal of GAMMA magnitude of voltage, also can difference between offset data processing module 1, data selection unit 23 and magnitude of voltage output unit 22 in operating speed, thus ensure the display image that LCD MODULE 5 can be stablized, coordinate.Certainly, in the present embodiment, data storage cell 21 also can use other to have the memory device of data storage capacities.
As shown in Figure 4, display module driving circuit in the present embodiment, also comprises the image signal processing blocks 4 be connected with data processing module 1, wherein:
Processing television signals for received television signal, and is the data processing module 1 inputted after image display signal in display module driving circuit by image signal processing blocks 4.
Data processing module 1 directly cannot receive and identify TV signal, so the existence of image signal processing blocks 4 extends the function of data processing module 1.In the present embodiment, image signal processing blocks 4 is preferably the video frequency processing chip of liquid crystal TV set.Certainly, in the present embodiment, display module driving circuit also can not arrange image signal processing blocks 4, and data processing module 1 directly receives image display signal (such as the image of LVDS form).
In the present embodiment, image display signal is LVDS form; And/or data processing module 1 is TCON chip; And/or driver module 3 is SOURCE driving chip.
The image display signal of LVDS form has the good advantage of versatility.TCON chip and SOURCE driving chip are stable performance and the chip of technical comparative maturity, use TCON chip and SOURCE driving chip not only can make full use of existing resource, and the upgrading be conducive to the existing liquid crystal TV set using TCON chip and SOURCE driving chip and transformation.
The liquid crystal TV set that the embodiment of the present invention provides, comprises display module driving circuit, LCD MODULE 5 and backlight that the invention described above embodiment provides, wherein:
Backlight, for providing backlight for the pixel in LCD MODULE 5;
Display module driving circuit, for providing for the pixel in LCD MODULE 5 driving voltage controlling pixel intensity.
The liquid crystal TV set provided due to the embodiment of the present invention has identical technical characteristic with the display module driving circuit that the invention described above embodiment provides, so identical technique effect also can be produced, solve identical technical matters, no longer repeat to set forth herein.
By changing the size of the driving voltage in the pixel that loads in LCD MODULE 5 as shown in Figure 2 or Figure 3, the transmittance of the pixel in LCD MODULE 5 can be changed, and then the object controlling pixel intensity can be reached.
Certainly, the display module driving circuit that the invention described above embodiment provides also can be applied on other electronic equipments outside liquid crystal TV set, such as desk liquid crystal computer, notebook computer etc.
As shown in Figure 2 and Figure 5, the display module driving method that the embodiment of the present invention provides, at least comprises the following steps:
S1, image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;
The GAMMA curvature correction GAMMA magnitude of voltage that S2, basis preset;
S3, with correct after the corresponding GAMMA voltage of GAMMA magnitude of voltage for reference voltage, and generate driving voltage according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal, and driving voltage is loaded in pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal in LCD MODULE 5.
The display module driving method provided due to the embodiment of the present invention has identical technical characteristic with the display module driving circuit that the invention described above embodiment provides and liquid crystal TV set, so identical technique effect also can be produced, solve identical technical matters, so no longer repeat to set forth herein.
As shown in Figure 2 and Figure 6, correct the method for GAMMA magnitude of voltage in the present embodiment, comprise the following steps:
When S11, real-time detection LCD MODULE 5 show the GTG picture of different brackets, the brightness value of the GTG picture shown by LCD MODULE 5;
S12, when the GTG picture detected brightness value corresponding to transmitance do not meet corresponding with the GTG picture GAMMA curve preset time, by the brightness value of the GTG picture shown by the mode adjustable liquid crystal display display module 5 that regulates GAMMA magnitude of voltage;
S13, regulate GAMMA magnitude of voltage until when the transmitance corresponding to brightness value of the GTG picture shown by LCD MODULE 5 detected in real time meets corresponding with the GTG picture GAMMA curve preset, GAMMA magnitude of voltage is now recorded as the GAMMA magnitude of voltage after correction.
GAMMA magnitude of voltage after correcting in the present embodiment comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the GAMMA voltage corresponding with R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the red GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve;
With the GAMMA voltage corresponding with G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the green GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve;
With the GAMMA voltage corresponding with B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE 5 time, the value of the transmitance corresponding to brightness value detected when LCD MODULE 5 shows the blue GTG picture of different brackets meets that preset, corresponding with red GTG picture GAMMA curve.
The method of the correction GAMMA magnitude of voltage that R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage all can adopt the invention described above to provide corrects and obtains.Such as: when needing correction to obtain R group GAMMA magnitude of voltage, can following steps be passed through:
When S110, real-time detection LCD MODULE 5 show the red GTG picture of different brackets, the brightness value of the GTG picture shown by it;
S120, when the red GTG picture detected brightness value corresponding to the value of transmitance do not meet corresponding with the red GTG picture GAMMA curve preset time, by the brightness value of the red GTG picture shown by the mode adjustable liquid crystal display display module 5 that regulates GAMMA magnitude of voltage;
S130, adjustment GAMMA magnitude of voltage, until when the value of the transmitance corresponding to brightness value of the red GTG picture detected in real time meets corresponding with the red GTG picture GAMMA curve preset, GAMMA magnitude of voltage is now recorded as R group GAMMA magnitude of voltage.
When LCD MODULE 5 shows the redness of different brackets, green or blue GTG picture, the brightness of luminance test instrument to the GTG picture shown by it can be used to detect, there is proportional relationship in detected brightness value and transmitance, just can be calculated the value of transmitance by the brightness of measuring GTG picture.
Luminance test instrument is a kind of a kind of equipment being exclusively used in the brightness value detecting LCD MODULE when LCD MODULE 5 shows red GTG picture (usual 256) of different brackets.Certainly, other devices with brightness measuring ability or equipment also can be used in the present embodiment to carry out alternative luminance test instrument.
The device that in the present embodiment, above-mentioned steps S110 can have a luminance test function by luminance test instrument or other automatically performs, step S120 and step S130 can be automatically performed by the GAMMA voltage generation module 2 be connected with the device that luminance test instrument or other have luminance test function or other devices (such as computing machine) with data-handling capacity, certainly, step S120 and step S130 also manually can be performed by operating personnel, be preferably and use GAMMA voltage generation module 2 or other devices (such as computing machine) with data-handling capacity to automatically perform.When automatically performing, not only execution speed is fast, and accuracy rate is high.
GAMMA curve is divided into three kinds, namely corresponding with red GTG picture GAMMA curve, the GAMMA curve corresponding with green GTG picture and the GAMMA curve corresponding with blue GTG picture, the horizontal ordinate of the GAMMA curve corresponding with red GTG picture represents the red GTG picture (256) of different brackets, ordinate represents that LCD MODULE 5 shows the value of the desirable transmitance of 256 different GTG pictures, in like manner, with green GTG picture, the horizontal ordinate of the GAMMA curve that blue GTG picture is corresponding represents the red GTG picture (256) of different brackets, blue GTG picture (256), ordinate represents that LCD MODULE 5 shows 256 different green GTG pictures, the value of the desirable transmitance of blue GTG picture.
When LCD MODULE 5 shows the GTG picture of different brackets, certain corresponding relation is there is between the value of the transmitance of the GTG picture shown by it and GAMMA magnitude of voltage, when LCD MODULE 5 measured by luminance test instrument, to show a certain color of different brackets (red, green or blue wherein a kind of) GTG picture time brightness value and the GAMMA curve of answering with this Color pair preset not to time corresponding then need to tune up or turn down GAMMA magnitude of voltage, when GAMMA magnitude of voltage is in a certain value, the luminance test instrument value of measuring transmitance when LCD MODULE 5 shows the GTG picture of this color of different brackets corresponding to brightness value with preset correspondingly or basic corresponding with the GAMMA curve that this Color pair is answered gone up (deviation is within allowable offset), then this time GAMMA magnitude of voltage, it is more satisfactory GAMMA magnitude of voltage, GAMMA magnitude of voltage after namely correcting.
When the driving voltage corresponding with the GAMMA magnitude of voltage through overcorrect loads in the pixel in LCD MODULE 5, the value of the transmitance corresponding to the brightness of the pixel in LCD MODULE 5 meets the GAMMA curve preset, and then relatively more suitable brightness can be provided for human eye, thus ensure that the image shown by LCD MODULE 5 seems each several part brightness ratio comparatively consistent and uniform.
Display module driving method in the embodiment of the present invention, further comprising the steps of:
According to spacing color mixed principle, pixel in N-th row in LCD MODULE 5 is loaded with R group GAMMA voltage as reference voltage and the driving voltage that generates, or, the pixel in the N-th row in LCD MODULE 5 is loaded with B group GAMMA voltage as reference voltage and the driving voltage that generates;
Pixel on capable to the N+1 in LCD MODULE 5 loads with G group GAMMA voltage as reference voltage and the driving voltage that generates;
Pixel on capable to the N+2 in LCD MODULE 5 loads with B group GAMMA voltage as reference voltage and the driving voltage that generates, or pixel on capable to the N+2 in LCD MODULE 5 loads with R group GAMMA voltage as reference voltage and the driving voltage that generates;
Wherein: N >=1, and be natural number, N is corresponding with line synchronizing signal.
According to spacing color mixed principle, when adopting load driver voltage in the multirow pixel of above method in LCD MODULE 5, more satisfactory display effect can be obtained in LCD MODULE 5.
In general, with the driving voltage that R group GAMMA voltage generates for benchmark, the driving voltage generated for benchmark with G group GAMMA voltage and with B group GAMMA voltage for the driving voltage that benchmark generates loads in the pixel in LCD MODULE 5 simultaneously, and then when driving each pixel, the display effect performance of LCD MODULE 5 is the most perfect, but under the mode of the rgb pixel left-right situs of current main-stream, the method can increase design difficulty and the manufacturing cost of driver module 3, so in the present embodiment driver module 3 according to spacing color mixed principle, pixel in LCD MODULE 5 is loaded successively respectively line by line to the driving voltage generated for benchmark with R group GAMMA voltage, the driving voltage generated for benchmark with G group GAMMA voltage and generate for benchmark with B group GAMMA voltage driving voltage time, the design difficulty of driver module 3 can be reduced, and then reduce the cost of driver module 3.
Because common LCD MODULE 5 all comprises multirow pixel, and area is larger, the line number of the pixel that the LCD MODULE 5 that resolution is higher comprises is also more, repeat to load line by line the driving voltage generated for benchmark with R group GAMMA voltage, the driving voltage generated for benchmark with G group GAMMA voltage and not only can save with the driving voltage that B group GAMMA voltage generates for benchmark the operation again correcting driving voltage value, and the consistance of display effect between LCD MODULE 5 adjacent lines can be ensured.
The GAMMA curve preset in the present embodiment is preferably GAMMA 2.2 typical curve.Facts have proved: when using the GAMMA magnitude of voltage meeting GAMMA 2.2 typical curve to load in the pixel in LCD MODULE 5, the display image frame of LCD MODULE 5 can give human eye with reasonable visual experience.Certainly, the GAMMA curve preset in the present embodiment also can according to producer or user need use GAMMA2.5 typical curve.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a display module driving circuit, it is characterized in that, the driver module comprising data processing module, the GAMMA voltage generation module be connected with described data processing module and be connected with described data processing module, described GAMMA voltage generation module respectively, wherein:
Described data processing module, for being treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal by image display signal;
Described GAMMA voltage generation module, for when receiving described line synchronizing signal, sends the corresponding GAMMA voltage of the GAMMA magnitude of voltage after according to the GAMMA curvature correction preset to described driver module;
Described driver module, for with described GAMMA voltage for reference voltage, and generate driving voltage according to described line synchronizing signal, described field sync signal, described data drive signal and described scanning drive signal, and described driving voltage is loaded in pixel corresponding with described line synchronizing signal, described field sync signal and described scanning drive signal in LCD MODULE;
Described GAMMA magnitude of voltage after correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the described GAMMA voltage corresponding with described R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the red GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the green GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the blue GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
Described driver module, for loading the pixel in the N-th row in LCD MODULE with R group GAMMA voltage as reference voltage and the described driving voltage that generates, or, the pixel in the N-th row in LCD MODULE is loaded with B group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+1 in LCD MODULE loads with G group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+2 in LCD MODULE loads with B group GAMMA voltage as reference voltage and the described driving voltage that generates, or pixel on capable to the N+2 in LCD MODULE loads with R group GAMMA voltage as reference voltage and the described driving voltage that generates;
Wherein: described N≤1, and be natural number, described N is corresponding with described line synchronizing signal.
2. display module driving circuit according to claim 1, is characterized in that, described image display signal is LVDS form;
And/or described data processing module is TCON chip;
And/or described driver module is SOURCE driving chip;
And/or, described in the GAMMA curve that presets be GAMMA2.2 or GAMMA2.5 typical curve.
3. display module driving circuit according to claim 1, is characterized in that, described GAMMA voltage generation module, comprises data storage cell, magnitude of voltage output unit and data selection unit, wherein:
Described data storage cell, for storing the described GAMMA magnitude of voltage after according to the GAMMA curvature correction preset;
Described data selection unit, for receiving described line synchronizing signal, and after the described line synchronizing signal of reception, exports the memory address of described GAMMA magnitude of voltage or described GAMMA magnitude of voltage to described magnitude of voltage output unit;
Described magnitude of voltage output unit, for sending the GAMMA voltage corresponding with described GAMMA magnitude of voltage to described driver module.
4. display module driving circuit according to claim 3, is characterized in that, described GAMMA voltage generation module is GAMMA voltage generation chip;
And/or described data storage cell is buffer register;
And/or this display module driving circuit, also comprises the image signal processing blocks be connected with described data processing module, wherein:
Described processing television signals for received television signal, and is the described data processing module inputted after image display signal in described display module driving circuit by described image signal processing blocks.
5. a liquid crystal TV set, is characterized in that, comprises claim 1-4 arbitrary described display module driving circuit, LCD MODULE and backlight, wherein:
Described backlight, for providing backlight for the pixel in described LCD MODULE;
Described display module driving circuit, for providing for the pixel in described LCD MODULE the driving voltage controlling described pixel intensity.
6. a display module driving method, is characterized in that, at least comprises the following steps:
Image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;
According to the GAMMA curvature correction GAMMA magnitude of voltage preset;
When receiving described line synchronizing signal, with the GAMMA voltage corresponding with the GAMMA magnitude of voltage after correction for reference voltage, and generate driving voltage according to described line synchronizing signal, described field sync signal, described data drive signal and described scanning drive signal, and described driving voltage is loaded in pixel corresponding with described line synchronizing signal, described field sync signal and described scanning drive signal in LCD MODULE;
According to the method for the GAMMA curvature correction GAMMA magnitude of voltage preset, comprise the following steps:
When S110, real-time detection LCD MODULE show the GTG picture of different brackets, the brightness value of the GTG picture shown by LCD MODULE;
S120, when the brightness value of the GTG picture detected does not meet corresponding with the GTG picture GAMMA curve preset, by the brightness value of the GTG picture shown by the mode adjustable liquid crystal display display module that regulates GAMMA magnitude of voltage;
S130, regulate GAMMA magnitude of voltage until when the brightness value of the GTG picture shown by LCD MODULE detected in real time meets corresponding with the GTG picture GAMMA curve preset, GAMMA magnitude of voltage is now recorded as the GAMMA magnitude of voltage after correction;
Described step S110 is automatically performed by luminance test instrument, and described step S120, S130 are automatically performed by the GAMMA voltage generation module be connected with described luminance test instrument;
And/or the described GAMMA magnitude of voltage after correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:
With the described GAMMA voltage corresponding with described R group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the red GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described G group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the green GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
With the described GAMMA voltage corresponding with described B group GAMMA magnitude of voltage for driving voltage that reference voltage generates load in LCD MODULE time, the value of the transmitance corresponding to brightness value detected during the blue GTG picture of LCD MODULE display different brackets meets that preset, corresponding with red GTG picture described GAMMA curve;
This display module driving method, further comprising the steps of:
Pixel in N-th row in LCD MODULE is loaded with R group GAMMA voltage as reference voltage and the described driving voltage that generates, or, the pixel in the N-th row in LCD MODULE is loaded with B group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+1 in LCD MODULE loads with G group GAMMA voltage as reference voltage and the described driving voltage that generates;
Pixel on capable to the N+2 in LCD MODULE loads with B group GAMMA voltage as reference voltage and the described driving voltage that generates, or pixel on capable to the N+2 in LCD MODULE loads with R group GAMMA voltage as reference voltage and the described driving voltage that generates;
Wherein: described N≤1, and be natural number, described N is corresponding with described line synchronizing signal.
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| CN105679255A (en) * | 2014-11-21 | 2016-06-15 | 东莞宇龙通信科技有限公司 | LCD Gamma value burning method and burning device |
| CN107424553B (en) * | 2017-09-22 | 2020-12-04 | 深圳市华星光电技术有限公司 | Scanning driving circuit board and display device |
| CN108206017B (en) * | 2018-01-25 | 2020-08-11 | 广州晶序达电子科技有限公司 | Method and system for improving screen jumping of liquid crystal panel |
| CN108550341B (en) * | 2018-05-31 | 2021-01-15 | 联想(北京)有限公司 | Display device and display method |
| CN110636219B (en) * | 2019-09-03 | 2020-12-01 | 北京三快在线科技有限公司 | Video data stream transmission method and device |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: HISENSE ELECTRIC Co.,Ltd. |