CN110197627A - A kind of driving method of display base plate, display panel and display panel - Google Patents
A kind of driving method of display base plate, display panel and display panel Download PDFInfo
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- CN110197627A CN110197627A CN201910464110.6A CN201910464110A CN110197627A CN 110197627 A CN110197627 A CN 110197627A CN 201910464110 A CN201910464110 A CN 201910464110A CN 110197627 A CN110197627 A CN 110197627A
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- base plate
- light transmission
- display base
- display
- display panel
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides the driving method of a kind of display base plate, display panel and display panel.Display base plate includes underlay substrate and multiple sub-pixels on the underlay substrate, the underlay substrate is equipped with multiple transparent areas, and each transparent area is not overlapped in the orthographic projection on the display base plate with orthographic projection of the multiple sub-pixel on the display base plate, the transparent area is used to increase the brightness of the display base plate light emission side.The display base plate of the embodiment of the present invention enables the light for being not provided with sub-pixel side from display base plate to be transferred to the side for being provided with sub-pixel, that is, the light emission side of display base plate through transparent area by setting transparent area.In the stronger situation of ambient, the display brightness of display base plate can be improved, be conducive to the service life for improving display panel, while reducing the power consumption of display panel.
Description
Technical field
The present invention relates to the drivings of field of display technology more particularly to a kind of display base plate, display panel and display panel
Method.
Background technique
MicroLED (micro-led) display panel has high brightness, service life length, contrast height, reaction time
Short, the various advantages such as low energy consumption, visible angle is big, structure is simple, small in size and resolution ratio is high, have extensive development prospect.
However in the stronger situation of ambient, in order to guarantee display effect, need to be turned up the display brightness of display panel, and this meeting
Cause the power consumption of display panel to increase, while may have an adverse effect to the service life of display panel.
Summary of the invention
The embodiment of the present invention provides the driving method of a kind of display base plate, display panel and display panel, existing to solve
Display base plate in the stronger situation of ambient needs that display brightness is turned up, may service life and function to display panel
The problem of consumption has an impact.
In a first aspect, the embodiment of the invention provides a kind of display base plate, including underlay substrate and it is located at the substrate base
Multiple sub-pixels on plate, the underlay substrate is equipped with multiple transparent areas, and each transparent area is on the display base plate
Orthographic projection be not overlapped with orthographic projection of the multiple sub-pixel on the display base plate, the transparent area is described for increasing
The brightness of display base plate light emission side.
It optionally, further include photomask, the underlay substrate is transparent substrate, and the photomask is located at the underlay substrate
Side far from the sub-pixel, the photomask are equipped with multiple through-holes, underlay substrate area corresponding with the through-hole
Domain forms the transparent area.
Optionally, multiple array of sub-pixels arrangements, the transparent area are located at the vertex of the sub-pixel.
Second aspect, the embodiment of the invention also provides a kind of display panels, including display base described in any of the above item
Plate.
It optionally, further include light transmission backboard and scattering film, the light transmission backboard is located at the backlight side of the display base plate, institute
Scattering film is stated between the light transmission backboard and the display base plate.
Optionally, the light transmission backboard includes Unidirectional transparent film, and the permission light transmission direction of the Unidirectional transparent film is served as reasons
The side of the light transmission backboard far from the display base plate to the side close to the display base plate.
Optionally, further include luminance sensor and light transmission control layer, the luminance sensor be located at the light transmission backboard and
Between the display base plate, and the luminance sensor is electrically connected with the light transmission control layer, and the light transmission control layer is located at institute
It states between light transmission backboard and the display base plate, and the light transmission control layer corresponds to each transparent area setting, the light transmission control
Preparative layer is configured to, and when the brightness value that the luminance sensor detects is greater than preset threshold, the light transmission control layer is in can
Light transmission state.
Optionally, the light transmission control layer is liquid crystal layer.
The third aspect, the embodiment of the invention provides a kind of driving methods of display panel, are applied to above-mentioned include brightness
The display panel of sensor, comprising the following steps:
When the brightness value arrived that the luminance sensor detects is greater than preset threshold, controls the light transmission control layer and cut
Shift to light-permeable state.
Optionally, when the brightness value arrived detected in the luminance sensor is greater than preset threshold, described in control
Light transmission control layer switches to light-permeable state, comprising:
In the case where the brightness value arrived that the luminance sensor detects is greater than preset threshold, the light transmission control is controlled
The degree of light transmission of preparative layer with the luminance sensor detect to brightness value increase and increase.
The display base plate of the embodiment of the present invention is by setting transparent area, so that being not provided with sub-pixel one from display base plate
The light of side can be transferred to the side for being provided with sub-pixel, that is, the light emission side of display base plate through transparent area.In the external world
In the stronger situation of light, the display brightness of display base plate can be improved, be conducive to the service life for improving display panel, simultaneously
Reduce the power consumption of display panel.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Take other attached drawings.
Fig. 1 is the structural schematic diagram of display base plate provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 3 is the schematic illustration of Unidirectional transparent film in the embodiment of the present invention；
Fig. 4 is the flow chart of the driving method the invention shows panel；
Fig. 5 is the another flow chart of the driving method the invention shows panel.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's acquired every other implementation without creative efforts
Example, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of display base plates.
As depicted in figs. 1 and 2, which includes underlay substrate 110 and the display layer on underlay substrate 110
120, display layer 120 include multiple sub-pixels 121 and other for realizing the structure or function film layer of display function, can specifically join
Existing and improved display base plate is examined, is not further qualified and describes herein.
Underlay substrate 110 be equipped with multiple transparent areas 130, orthographic projection of each transparent area 130 on display base plate with it is multiple
Orthographic projection of the sub-pixel 121 on display base plate is not overlapped, that is to say, that each transparent area 130 and each sub-pixel 121 perpendicular to
There is no the places being overlapped on the direction of display base plate, it can be understood as, there are certain intervals between each sub-pixel 121, thoroughly
The distribution of light area 130 is then distributed in these intervals.
The transparent area 130 is used to increase the emitting brightness of display base plate light emission side, in use, extraneous light energy
Enough sides (or backlight side of display base plate) by display base plate far from each sub-pixel 121 pass through transparent area 130, are transmitted through and set
It is equipped with the side (or light emission side of display base plate) of sub-pixel 121, to increase the display brightness of display base plate.
The display base plate of the embodiment of the present invention is by setting transparent area 130, so that from display base plate far from sub-pixel 121
The light of side can be transferred to the side for being provided with sub-pixel 121 through transparent area 130.In the stronger situation of ambient
Under, it can be improved the emitting brightness of display base plate, be also equivalent in the case where the display brightness of each sub-pixel 121 is constant,
The actual displayed brightness for improving display base plate is conducive to the service life for improving display panel, while reducing display panel
Power consumption.
It in an optional embodiment, can be by opening up the via hole for running through display base plate as transparent area
130。
In another optional specific embodiment, as shown in Fig. 2, underlay substrate 110 has selected transparent substrate 111,
And it is provided with photomask 112, photomask 112 is located at side of the transparent substrate 11 far from sub-pixel 121, and photomask 112 is equipped with
Multiple through-holes, in this way, the position where each through-hole forms transparent area 130, and rest part is real due to the presence of photomask 112
Opaque area is formed on border.
In above-mentioned specific embodiment, when cabling is set, the position of cabling can be adjusted, rationally to avoid walking
Line blocks transparent area 130, it is clear that can also avoid the translucent effect to transparent area 130 by way of selecting transparent cabling
It impacts.
It is matched by transparent substrate 111 with photomask 112, helps to simplify processing technology, while reducing punching and leading
A possibility that causing display base plate damage.
Optionally, multiple 121 array arrangements of sub-pixel, transparent area 130 are located at the vertex of sub-pixel 121.
As shown in Figure 1, in a specific embodiment, the sub-pixel 121 in display base plate includes red sub-pixel (R)
121A, green sub-pixels (G) 121B and tri- kinds of sub-pixes of blue subpixels (B) 121C, the sub-pixel 121 including three sub-pixes
It is arranged in array.
Four adjacent sub- pictures are particularly located at for being located at for the transparent area 130 of middle section please continue to refer to Fig. 2
Between element 121, and it is located at the transparent area 130 at the place of edge, then is located at the vertex of one or two sub-pixel 121.
Position by controlling each transparent area 130 is located at the vertex of each pixel, is conducive to make the light through display base plate
Line distribution it is more uniform, that is, make display base plate Luminance Distribution it is more uniform.
The embodiment of the invention also provides a kind of display panel, the display base plate including any of the above item.
The display panel of the present embodiment can be applied on various electronic equipments, can specifically include but be not limited to mobile phone,
Tablet computer, E-book reader, MP3 player, MP4 player, digital camera, pocket computer on knee, vehicle-mounted computer,
Desktop computer, set-top box, intelligent TV set, in wearable device at least one of.Due to the technical solution packet of the present embodiment
Whole technical solutions of above-described embodiment have been included, therefore have at least been able to achieve above-mentioned whole technical effects, details are not described herein again.
Optionally, display panel further includes light transmission backboard 140 and scattering film 150.
Light transmission backboard 140 is located at the backlight side of display base plate, in this way, external light can be via the light transmission backboard 140
The backlight side of display base plate is arrived at, further each transparent area 130 by display base plate arrives at the light emission side of display base plate,
It is exactly the side that display base plate is provided with sub-pixel 121.
As shown in Fig. 2, arrow is that the distribution of light is illustrated in Fig. 2, the light distribution through light transmission backboard 140 may be not
Uniformly, it is excessively dark or local excessively bright to may cause part, scattering film 150, should between light transmission backboard 140 and display base plate
Scattering film 150 is for scattering light, in this way, distribution is comparatively when extraneous light is transferred at display base plate
Uniformly, can reduce display base plate part it is excessively bright or excessively dark a possibility that.
Optionally, light transmission backboard 140 includes Unidirectional transparent film 141, and the permission light transmission direction of Unidirectional transparent film 141 is served as reasons
Side of the light transmission backboard 140 far from display base plate to the side close to display base plate.
As shown in figure 3, setting Unidirectional transparent film 141 for light transmission backboard 140, represented on the left of Unidirectional transparent film 141 in Fig. 3
Close to the side of display base plate, right side represents the side far from display base plate, and the arrow of top represents the light of display base plate sending
Line, the light can not pass through Unidirectional transparent film 141, and the light of lower section represents natural light or from external light, these light
Unidirectional transparent film 141 can then be passed through.By the way that Unidirectional transparent film 141 is arranged, the light of display panel sending can be avoided by saturating
Light back board 140 appears, so that the display brightness of display panel be avoided to lose, advantageously ensures that the display effect of display panel.
It optionally, further include luminance sensor 160 and light transmission control layer 170, luminance sensor 160 is located at light transmission backboard
Between 140 and display base plate, and luminance sensor 160 is electrically connected with light transmission control layer 170, and light transmission control layer 170 is located at light transmission
Between backboard 140 and display base plate, and the corresponding each transparent area 130 of light transmission control layer 170 is arranged, and light transmission control layer 170 is configured to,
When the brightness value that luminance sensor 160 detects is greater than preset threshold, light transmission control layer 170 is in light-permeable state.
In the lower situation of brightness of display panel use environment, the display effect of display panel be it is relatively good,
In this case, influence of the outside illumination for display panel is relatively small, only in the higher feelings of the brightness of use environment
Under condition, the identification of each pixel is reduced on display panel, and just will lead to can not clearly observe the content that display panel is shown.
Luminance sensor 160 is between light transmission backboard 140 and display base plate, since external environment brightness is bigger, via
The light luminance that light transmission backboard 140 projects is also stronger, and the brightness which detects also will be brighter, so
The testing result of luminance sensor 160 can react the brightness of the use environment of display panel.
When light transmission control layer 170 is configured to brightness value that luminance sensor 160 detects and is greater than preset threshold, light transmission control
Layer 170 is in light-permeable state, that is to say, that in the biggish situation of the brightness of external environment, each light transmission control layer 170 allows
Light penetrates, at this point, external light can be successively via the light transmission of light transmission backboard 140, light transmission control layer 170 and display base plate
Area 130 is transmitted through the light emission side of display base plate, the emitting brightness of display base plate can be increased, equivalent to increase display surface
The actual displayed brightness of plate.
Optionally, light transmission control layer 170 is liquid crystal layer.
By the degree of deflection of liquid crystal molecule in control liquid crystal layer, the control for liquid crystal layer degree of light transmission can be realized,
It specifically refers to existing LCD Controlling method, repeats no more herein to its principle.By setting liquid crystal layer as light transmission control
Preparative layer 170 can control the degree of light transmission of the liquid crystal layer according to demand, to realize the tune for display panel emitting brightness
Section.
The present invention also provides a kind of driving methods of display panel, applied to above-mentioned including luminance sensor and light transmission control
The display panel of preparative layer, as shown in figure 4, the driving method of the display panel the following steps are included:
Step 401: when the brightness value arrived that the luminance sensor detects is greater than preset threshold, controlling the light transmission
Control layer switches to light-permeable state.
In the present embodiment, the preset threshold of brightness value is set according to demand, when the brightness of external environment is relatively low,
Light transmission control layer is in impermeable light state, and the driving method of the display panel can refer to existing display panel, do not make herein into
One step limits and description.
When external environment brightness is greater than the preset threshold, control light transmission control layer switches to light-permeable state, Neng Goushi
Now enhance the emitting brightness of display panel by natural light, in this way, compared with existing display panel, in the identical feelings of emitting brightness
Under condition, due to supplementing brightness by being provided with transparent area, the brightness of each sub-pixel of the display panel is relatively low, to be conducive to
It reduces the energy consumption of display panel and is conducive to increase the service life of display panel.
In a specific embodiment, select photo resistance as luminance sensor, which is applied with
One constant current or constant voltage, as shown in figure 5, brightness change leads to its resistance when natural light or extraneous light incidence
When value changes, voltage data and current data also can accordingly change.For example, when electric current is constant, if resistance
Increase, then the voltage at its both ends will increase.
Obviously, be also an option that when implementation other elements as luminance sensor, such as luminance meter or imaging sensor, together
Sample can be realized the measurement to brightness.
This voltage change or curent change are a kind of analog signal, if necessary, it is also necessary to according to circumstances by it
Be converted to control circuit (TCON IC) identifiable digital signal.When control circuit receives this voltage number of photo resistance
According to or current data variation when, judge whether to need that brightness is adjusted according to environmental light intensity.
When the brightness of external environment is lower, display base plate is able to achieve preferable display effect, only in external environment
When brightness is higher, the brightness of each pixel of display panel is opposite lower with external environment, so being not easy to be identified, produces to display effect
It is raw.Therefore, ambient intensity is further judged according to the signal that luminance sensor transmits by control circuit in the present embodiment
Whether the requirement of satisfaction adjusting brightness does not need to be adjusted if the brightness of the outside detected is lower, at this point, being not required to
Data are transmitted to driving circuit (source IC), the next data of photo resistance is waited to input.
If detected outside illumination is relatively high, need to increase the emitting brightness of display panel, at this point, judgement is
It is no to need that brightness is adjusted by transparent area.Specifically, working as used display panel to be includes tri- kinds of color Asia pictures of RGB
When the display panel of element, it is equivalent to and determines whether to enter RGBW pattern.
It is saturating for transparent area actually namely using transparent area as white light pixel (W) if necessary to enter RGBW pattern
The adjusting of light path degree is also equivalent to the adjusting for white light pixel intensity.
Control circuit output is sent to driving circuit for carrying out the signal of brightness control, includes white light in the signal
The brightness shown needed for pixel, driving circuit control the opening degree of liquid crystal layer, its degree of light transmission are made to reach required white brightness,
Complete the adjusting for display brightness.
Under normal circumstances, the natural light in use environment may be considered white light, that is to say, that this is provided with transparent area
Display panel is also equivalent to control equivalent to increase a white light pixel (W) by controlling the degree of light transmission of light transmission control layer
The brightness of white light pixel processed.It include the display panel of the sub-pix of red (R), green (G) and blue (B) three kinds of colors with above-mentioned sub-pixel
For, tri- kinds of pixels of RGB are only provided with, can then can be realized the display effect of RGBW display panel.
Optionally, when the brightness value arrived detected in the luminance sensor is greater than preset threshold, described in control
Light transmission control layer switches to light-permeable state, comprising:
In the case where the brightness value arrived that the luminance sensor detects is greater than preset threshold, the light transmission control is controlled
The increase for the brightness value that the degree of light transmission of preparative layer is detected with the luminance sensor and increase.
In the higher situation of external ambient brightness, the display brightness of display panel needs be correspondingly improved just can guarantee it is aobvious
Show effect, therefore, the increase for the brightness value that the degree of light transmission of light transmission control layer is detected with luminance sensor in the present embodiment
And increase, to guarantee that display panel has preferable display effect.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of display base plate, which is characterized in that multiple sub-pixels including underlay substrate and on the underlay substrate, institute
It states underlay substrate and is equipped with multiple transparent areas, and orthographic projection of each transparent area on the display base plate and the multiple son
Orthographic projection of the pixel on the display base plate is not overlapped, and the transparent area is for increasing the bright of the display base plate light emission side
Degree.
2. display base plate as described in claim 1, which is characterized in that the display base plate further includes photomask, the substrate
Substrate is transparent substrate, and the photomask is located at side of the underlay substrate far from the sub-pixel, is set on the photomask
There are multiple through-holes, underlay substrate region corresponding with the through-hole forms the transparent area.
3. display base plate as described in claim 1, which is characterized in that multiple array of sub-pixels arrangements, the transparent area
Between the apex angle of the sub-pixel.
4. a kind of display panel, which is characterized in that including display base plate described in any one of claims 1 to 3.
5. display panel as claimed in claim 4, which is characterized in that further include light transmission backboard and scattering film, the light transmission back
Plate is located at the backlight side of the display base plate, and the scattering film is between the light transmission backboard and the display base plate.
6. display panel as claimed in claim 5, which is characterized in that the light transmission backboard includes Unidirectional transparent film, and described
The permission light transmission direction of Unidirectional transparent film is by the side of the light transmission backboard far from the display base plate to close to the display
The side of substrate.
7. the display panel as described in any one of claim 4 to 6, which is characterized in that further include luminance sensor and light transmission
Control layer, the luminance sensor is between the light transmission backboard and the display base plate, and the luminance sensor and institute
Light transmission control layer electrical connection is stated, the light transmission control layer is and described between the light transmission backboard and the display base plate
Optical control layer corresponds to each transparent area setting, and the light transmission control layer is configured to, detects in the luminance sensor bright
When angle value is greater than preset threshold, the light transmission control layer is in light-permeable state.
8. display panel as claimed in claim 7, which is characterized in that the light transmission control layer is liquid crystal layer.
9. a kind of driving method of display panel, be applied to display panel as claimed in claim 7, which is characterized in that including with
Lower step:
When the brightness value arrived that the luminance sensor detects is greater than preset threshold, controls the light transmission control layer and switch to
Light-permeable state.
10. the driving method of display panel as claimed in claim 9, which is characterized in that described to be examined in the luminance sensor
When the brightness value arrived measured is greater than preset threshold, controls the light transmission control layer and switches to light-permeable state, comprising:
In the case where the brightness value arrived that the luminance sensor detects is greater than preset threshold, the light transmission control layer is controlled
Degree of light transmission with the luminance sensor detect to brightness value increase and increase.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910464110.6A CN110197627B (en) | 2019-05-30 | 2019-05-30 | Display substrate, display panel and driving method of display panel |
| PCT/CN2020/082059 WO2020238387A1 (en) | 2019-05-30 | 2020-03-30 | Display substrate, display panel and driving method for display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910464110.6A CN110197627B (en) | 2019-05-30 | 2019-05-30 | Display substrate, display panel and driving method of display panel |
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| Publication Number | Publication Date |
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| CN110197627A true CN110197627A (en) | 2019-09-03 |
| CN110197627B CN110197627B (en) | 2021-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020238387A1 (en) * | 2019-05-30 | 2020-12-03 | 京东方科技集团股份有限公司 | Display substrate, display panel and driving method for display panel |
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| CN108766387A (en) * | 2018-05-30 | 2018-11-06 | 京东方科技集团股份有限公司 | Display device, the method and terminal device for automatically adjusting brightness of display screen |
| CN109192759A (en) * | 2018-08-29 | 2019-01-11 | 京东方科技集团股份有限公司 | The preparation method of display panel and display panel |
| CN109633968A (en) * | 2019-01-21 | 2019-04-16 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020238387A1 (en) * | 2019-05-30 | 2020-12-03 | 京东方科技集团股份有限公司 | Display substrate, display panel and driving method for display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020238387A1 (en) | 2020-12-03 |
| CN110197627B (en) | 2021-08-13 |
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