CN112015285A - Touch panel with light emitting diodes - Google Patents
Touch panel with light emitting diodes Download PDFInfo
- Publication number
- CN112015285A CN112015285A CN201910453858.6A CN201910453858A CN112015285A CN 112015285 A CN112015285 A CN 112015285A CN 201910453858 A CN201910453858 A CN 201910453858A CN 112015285 A CN112015285 A CN 112015285A
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- China
- Prior art keywords
- touch
- light emitting
- area
- touch panel
- touch sensing
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
- G06F1/169—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9627—Optical touch switches
- H03K17/9631—Optical touch switches using a light source as part of the switch
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9627—Optical touch switches
- H03K17/9631—Optical touch switches using a light source as part of the switch
- H03K2017/9634—Optical touch switches using a light source as part of the switch using organic light emitting devices, e.g. light emitting polymer [OEP] or OLED
Abstract
A touch pad comprises at least one light emitting diode and a printed circuit board, wherein the light emitting diode is provided with two connecting ends, the printed circuit board is provided with a surface, a touch sensing pattern is formed on the surface to sense touch operation, at least one light emitting diode placing area is defined on the touch sensing pattern, and the light emitting diode is arranged in the light emitting diode placing area to enable the two connecting ends of the light emitting diode to be connected to the printed circuit board and electrically isolated from the touch sensing pattern. Because the light emitting diode is arranged in the placement area defined by the touch sensing pattern, a touch dead zone can be avoided, and the touch pad with the light emitting diode can realize the overall touch function.
Description
Technical Field
The present invention relates to a touch panel, and more particularly, to a touch panel with light emitting diodes capable of providing a full-scale touch function.
Background
Generally, a notebook computer is mostly equipped with a touch pad (touch pad) for a user to touch and operate the notebook computer, and with the progress of touch technology, the touch pad providing only a touch function cannot meet the user's requirements, and nowadays, the touch pad is further switchable to a touch number key to provide the touch pad with a number input function.
Fig. 1 is a layout diagram of a conventional touch panel 10 capable of switching to touch operation or digital input, which is to divide an operation surface of the touch panel 10 into a touch area 11 and a light emitting diode (led) setting area 13, wherein an upper edge portion of the operation surface of the touch panel 10 is used as the led area 13 for setting leds, and the rest portions are used as the touch area 11 for arranging touch sensing patterns, so that when the touch panel 10 is switched to touch numeric keys, the leds can be turned on to light a light guide plate on the touch panel 10 to display the touch numeric keys, thereby facilitating a user to input the numeric keys by touch.
However, with the configuration of fig. 1, the led area 13 of the operation surface of the touch panel 10 cannot provide the touch function, and a so-called Dead Zone (Dead Zone) is formed, and for the touch panel 10 of 140mm X80mm, the Dead Zone has a size of about 140mm X5 mm and occupies 6.25% of the touch surface, and the user does not know the existence of the Dead Zone when performing the touch operation, so that the problem of unsmooth touch operation or even misunderstanding that the touch panel 10 fails is often caused. Since having a touch dead zone also reduces the touchable area of the touch panel, it is not possible to provide a touch panel with full touch.
Therefore, there are still many defects and needs to be improved in the design of the conventional touch panel with the light emitting diodes.
Disclosure of Invention
The present invention is directed to a touch panel with light emitting diodes, which is free from forming a touch dead zone, so as to solve the above-mentioned drawbacks of the prior art.
To achieve the above object, the present invention provides a touch panel, which includes: at least one light emitting diode having two connection terminals; and a printed circuit board having a surface on which a touch sensing pattern is formed to sense a touch operation; at least one light emitting diode placement area is defined on the touch sensing pattern, and the light emitting diode is arranged in the light emitting diode placement area, so that two connecting ends of the light emitting diode are connected to the printed circuit board and are electrically isolated from the touch sensing pattern.
In the embodiment of the invention, the light emitting diode is arranged in the placement area defined by the touch sensing pattern, so that a touch dead zone can be avoided, and the touch pad with the light emitting diode and the full touch function can be realized. That is to say, the touch panel provided by the embodiment of the invention can realize not only the light-emitting touch keys, but also the touch panel can realize the overall touch function.
The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the present invention as claimed, and other objects and advantages of the invention will be apparent from the following description and drawings.
Drawings
Fig. 1 is a configuration diagram of a conventional touch panel that can switch to touch operation or digital input.
Fig. 2(a) is a schematic plan view showing a touch panel of the present invention.
Fig. 2(B) is a schematic side view of the touch panel of the present invention viewed from the direction of the arrow in fig. 2 (a).
FIG. 3 is an enlarged view of a portion of the touch panel of the present invention to schematically illustrate one embodiment of a light emitting diode placement area.
FIG. 4 is an enlarged view of a portion of the touch panel of the present invention to schematically illustrate another embodiment of the LED placement area.
Fig. 5 schematically illustrates compensation for a decrease in touch sensing amount due to the formation of a hollow area on a touch sensing pattern corresponding to a touch sensing area.
Fig. 6 schematically shows the current limiting resistor to control the brightness of the led to make the overall brightness uniform.
Fig. 7 is a configuration diagram showing that the touch panel of the present invention can be switched to a touch operation or a digital input.
Description of the symbols:
Led region 13 leds 21
Printed circuit board 23 connection end 211
The sensing line pattern 253 touches the sensing areas 27, 271, 272
The LED placement region 22 has a through hole 24
Distance D, d between excavated areas 31, 41
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific examples described herein are merely illustrative of the embodiments of the invention and are not intended to limit the invention.
Fig. 2(a) is a schematic plan view of the touch panel 20 of the present invention, and fig. 2(B) is a schematic side view of the touch panel 20 of the present invention viewed from the arrow direction of fig. 2(a), as shown in the figure, the touch panel 20 includes at least one led 21 and a printed circuit board 23, each led 21 has at least two connecting ends 211, a plurality of leds 21 are shown in the figure and are distributed equidistantly to provide sufficient brightness, but the present invention only needs at least one led 21 to achieve the brightness that can be displayed, and each led 21 in the figure has two connecting ends 211, but the present invention is not limited thereto, and leds with more connecting ends can also be applied.
A touch sensing pattern 25 is formed on one surface 231 of the printed circuit board 23 to sense touch operations, and a control circuit 29 is provided on the other surface 233 of the printed circuit board 23. The touch sensing pattern 25 includes a plurality of driving line patterns 251 and a plurality of sensing line patterns 253 arranged in a staggered manner to correspondingly define a plurality of touch sensing areas 27 arranged in rows (rows) and columns (columns), so that each touch sensing area 27 corresponds to a portion of the touch sensing pattern 25, i.e., the portion of the touch sensing pattern outlined by the dotted line squares as shown in the figure. Each of the sensing line patterns 253 is an integral sensing line in the figure, each of the driving line patterns 251 is a driving line electrically connected together by a wire connection (not shown) in the printed circuit board 23 or on the other surface 233, and during a touch operation, the control circuit 29 applies a driving signal to the plurality of driving line patterns 251, and determines whether a touch occurs in one or more touch sensing areas 27 by reading the sensing signals on the plurality of sensing line patterns 253, which is known to those skilled in the touch sensing art and will not be described herein, the shapes of the touch sensing patterns 25 (the driving line pattern 251 and the sensing line pattern 253) shown in fig. 2(a) are also examples, and those skilled in the touch technology can understand that various touch sensing patterns can be applied, and the invention is not limited to this specific touch sensing pattern 25.
Referring to fig. 2(a), at least one led placing area 22 is defined on the touch sensing pattern 25 for placing an led 21 therein, since fig. 2(a) illustrates a plurality of leds 21, a plurality of led placing areas 22 are also needed, the led placing areas 22 are configured to connect two connection ends 211 of the leds 21 placed therein to the printed circuit board 23 and electrically isolated from the touch sensing pattern 25, and in addition, as shown in fig. 2(B), the two connection ends 211 of the leds 21 can be further electrically connected to the control circuit 29 disposed on the other surface 233 of the printed circuit board 23 through the through holes 24 on the printed circuit board 23.
Referring to fig. 3, a partial enlarged view of the touch panel 20 of the present invention is shown to schematically illustrate an embodiment of the led placement area 22, wherein the led placement area 22 is formed by removing two portions of the touch sensing pattern 25 to have two hollow areas 31, each hollow area 31 is located and ranges corresponding to a connection end 211 of the led 21, and the two connection ends 211 of the led 21 are respectively connected to the pcb 23 through the two second hollow areas 31. As shown in the figure, in the present embodiment, the two second hollow areas 31 are respectively located in two adjacent touch sensing areas 271 and 272, and therefore, the light emitting diode 22 is disposed across the two adjacent touch sensing areas 271 and 272. In addition, in other embodiments, the two second hollow areas 31 may also be located in the same touch sensing area 27, and therefore the light emitting diode 21 is also located in the same touch sensing area 27. In another embodiment, the light emitting diode 21 may also be composed of a plurality of light emitting diodes capable of emitting light of different colors, and the light emitting diode may also include a plurality of connection terminals.
As mentioned above, the plurality of touch sensing areas 27 are arranged in rows and columns, in one embodiment, the plurality of led placement areas 22 are defined in the touch sensing area 27 of the first row (row) for placing the plurality of leds 21 on the touch sensing area 27 of the first row (row), so that only the portion of the touch sensing area 27 of the first row (row) corresponding to the touch sensing pattern 25 with the leds 21 is formed with the hollow area 31, however, in order to obtain the pattern consistency so as not to affect the touch sensing amount, the same hollow area 31 may be formed on the portion of the touch sensing pattern 25 corresponding to each touch sensing area 27 of the first row. In addition, the light emitting diodes 21 of the present invention are not limited to be disposed on the first row (row), and it is understood that the light emitting diodes 21 may be disposed on the first column (column) or other suitable positions.
Referring to fig. 4, a partial enlarged view of the touch panel 20 of the present invention is shown to schematically show another embodiment of the led placement region 22, wherein the led placement region 22 is formed by removing a portion of the touch sensing pattern 25 to form a hollow 41, the hollow 41 is located and extends corresponding to the led 21, and two connection terminals 211 of the led 21 are connected to the pcb 23 through the hollow 41. That is, the touch sensing pattern 25 may not be formed in the led placing region 22. As shown in the figure, in the present embodiment, the hollow area 41 spans two adjacent touch sensing areas 271 and 272, and therefore, the light emitting diode 22 is disposed across the two adjacent touch sensing areas 271 and 272. In addition, in other embodiments, the hollow area 41 may be located in the same touch sensing area 27, and thus the led 21 is also located in the same touch sensing area 27.
Similarly, in an embodiment, only the first row (row) of the touch sensing areas 27 in the plurality of touch sensing areas 27 arranged in rows and columns has a hollow 41 corresponding to the portion of the touch sensing pattern 25 where the light emitting diodes 21 are disposed, however, in order to obtain pattern consistency so as not to affect the touch sensing amount, the same hollow 41 may be formed on the portion of the touch sensing pattern 25 corresponding to each touch sensing area 27 in the first row.
In some embodiments, when only the portion of the touch sensing pattern 25 corresponding to the first row of touch sensing area 27 is formed with the hollowed area 31 or 41, the hollowed area may reduce the touch sensing amount, and therefore compensation is needed, as shown in fig. 5, by enhancing the driving signal input to the driving line pattern 251 (for example, by making the Gain of the driving signal applied to the first row of input driving line pattern 251 greater than 1), or by enhancing the sensing signal output from the sensing line pattern 253 (for example, by adjusting the output Gain (Gain) of the sensing line pattern 253 to enhance the output sensing signal when reading the sensing signal from the first row of input driving line pattern 251), or by software to compensate for the reduction of the touch sensing amount caused by the hollowed area 31 or 41 formed on the touch sensing pattern 25 corresponding to the touch sensing area 27.
Referring to fig. 6, it is further explained that the current limiting resistors are used to control the brightness of the light emitting diodes 21 to make the overall brightness uniform, unlike the embodiment in which the plurality of light emitting diodes 21 are disposed in the touch sensing area 27 of the first row (row) at equal distances, the plurality of light emitting diodes 21 of fig. 6 are disposed in the touch sensing area 27 of the first row (row) at non-equal distances, and the distance D between the first light emitting diode 21 and the boundary in fig. 6 is greater than the distance D between any two light emitting diodes 21 or the distance D between the last light emitting diode 21 and another boundary, which may cause the first light emitting diode 21 not to provide sufficient brightness, so that the current limiting resistors connected to the light emitting diodes 21 can be used to improve the phenomenon, that is, the different resistance values (R1-R8) of the current limiting resistors are used to compensate the brightness non-uniformity caused by the light emitting diodes 21 that are not distributed at equal distances, in the example shown in fig. 6, the resistance values R1< R2 ═ R3 ═ R4 ═ R5 ═ R6 ═ R7 ═ R8 are selected, and since the resistance value R1 of the current limiting resistor connected to the first led 21 is small, the current flowing through the current limiting resistor is large, so that the luminance of the first led 21 is high, and the luminance unevenness caused by the non-equidistant leds 21 can be compensated.
As can be seen from the above description, in the touch panel of the present invention, the touch sensing areas are distributed on the entire surface of the touch panel, and the cut-out touch sensing patterns are used to provide the light emitting diodes for the arrangement of the light emitting diodes, so as to provide the bright light of the light emitting diodes to display the touch numeric keys without forming a touch dead zone, as shown in fig. 7, the touch panel 20 of the present invention can be switched to a touch operation or a numeric input configuration diagram, and since no additional touch dead zone is formed, the touch panel 20 of the embodiment of the present invention can additionally increase 6.25% of the touch surface, and further the touch panel 20 has a full-surface touch function, so that the touch operation can be more smooth.
The above-described embodiments are merely exemplary for convenience in explanation, and the scope of the claims of the present invention should be determined by the claims rather than by the limitations of the above-described embodiments.
Claims (17)
1. A touch panel having light emitting diodes, comprising:
at least one light emitting diode having at least two connection terminals; and
a printed circuit board having a surface on which a touch sensing pattern is formed to implement a sensing touch operation;
at least one light emitting diode placement area is defined on the touch sensing pattern, and the light emitting diode is arranged in the light emitting diode placement area, so that two connecting ends of the light emitting diode are connected to the printed circuit board and are electrically isolated from the touch sensing pattern.
2. The touch panel of claim 1, wherein the touch sensing pattern comprises a plurality of driving line patterns and a plurality of sensing line patterns arranged in a staggered manner to define a plurality of touch sensing areas, each touch sensing area corresponding to a portion of the touch sensing pattern.
3. The touch panel of claim 2, wherein the led placement area is formed by removing a portion of the touch sensing pattern to form a first hollow area, the first hollow area having a range and a position corresponding to the led, and both connection terminals of the led are connected to the pcb through the first hollow area.
4. The touch panel of claim 3, wherein the first hollowed-out area is located in a touch sensitive area and the light emitting diode is also located in the touch sensitive area.
5. The touch panel of claim 3, wherein the first hollowed-out area spans two adjacent touch sensitive areas, and the light emitting diode spans the two adjacent touch sensitive areas.
6. The touch panel of claim 3, wherein the same hollowed-out area is formed in the portion of the touch sensing pattern corresponding to each touch sensing area.
7. The touch panel according to claim 3, wherein the driving line patterns and the sensing line patterns corresponding to the touch sensing area provided with the light emitting diodes are used to enhance driving signals input to the driving line patterns, or to enhance sensing signals output from the sensing line patterns, or to compensate for a decrease in touch sensing amount with software.
8. The touch panel according to claim 2, wherein the led placement area is formed with two second hollows by removing two portions of the touch sensing pattern, each second hollow corresponding in range and position to a connection terminal of the led, the connection terminals of the led being connected to the pcb through the two second hollows, respectively.
9. The touch panel of claim 8, wherein the two second hollowed-out areas are located in a touch sensing area, and the light emitting diode is also located in the touch sensing area.
10. The touch panel according to claim 8, wherein the two second hollow areas are respectively located in two adjacent touch sensing areas, and the light emitting diode crosses the two adjacent touch sensing areas.
11. The touch panel of claim 8, wherein the same hollowed-out area is formed in the portion of the touch sensing pattern corresponding to each touch sensing area.
12. The touch panel device according to claim 8, wherein the driving line patterns and the sensing line patterns corresponding to the touch sensing areas provided with the light emitting diodes are used to enhance driving signals input to the driving line patterns, or to enhance sensing signals output from the sensing line patterns, or to compensate for a decrease in touch sensing amount with software.
13. The touch panel of claim 2, wherein the plurality of touch sensitive areas are arranged in rows and columns, the at least one LED placement area is a plurality of LED placement areas defined in the touch sensitive areas of the first row, and the at least one LED is a plurality of LEDs disposed in the touch sensitive areas of the first row.
14. The touch panel of claim 13, wherein the plurality of light emitting diodes are disposed equidistantly in the touch sensitive area of the first row.
15. The touch panel of claim 13, wherein the plurality of light emitting diodes are disposed non-equidistantly in the touch sensitive area of the first row.
16. The touch panel according to claim 15, wherein each of the light emitting diodes is connected to a current limiting resistor, so that a different resistance value of the current limiting resistor is selected to compensate for the non-uniform brightness caused by the non-equidistantly distributed light emitting diodes.
17. The touch panel according to claim 15, wherein the two connection terminals of the light emitting diode are further electrically connected to the control circuit disposed on the other side of the printed circuit board through the through hole of the printed circuit board.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453858.6A CN112015285B (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
| CN202310695424.3A CN116594516A (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453858.6A CN112015285B (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310695424.3A Division CN116594516A (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112015285A true CN112015285A (en) | 2020-12-01 |
| CN112015285B CN112015285B (en) | 2023-07-18 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310695424.3A Pending CN116594516A (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
| CN201910453858.6A Active CN112015285B (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310695424.3A Pending CN116594516A (en) | 2019-05-28 | 2019-05-28 | Touch pad with light emitting diode |
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| Country | Link |
|---|---|
| CN (2) | CN116594516A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM251208U (en) * | 2003-12-19 | 2004-11-21 | First Int Computer Inc | Hidden type touch pad structure |
| CN104281320A (en) * | 2014-09-23 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Touch screen, touch screen manufacturing method and touch display device |
| US20150138146A1 (en) * | 2013-11-19 | 2015-05-21 | Samsung Display Co., Ltd. | Display device integrated with touch screen panel |
| CN105047609A (en) * | 2015-08-27 | 2015-11-11 | 京东方科技集团股份有限公司 | Organic light emitting diode array substrate, fabrication method thereof and touch control display device |
| CN109358770A (en) * | 2018-10-30 | 2019-02-19 | 合肥鑫晟光电科技有限公司 | Touch panel and its manufacturing method, touch control display apparatus |
-
2019
- 2019-05-28 CN CN202310695424.3A patent/CN116594516A/en active Pending
- 2019-05-28 CN CN201910453858.6A patent/CN112015285B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM251208U (en) * | 2003-12-19 | 2004-11-21 | First Int Computer Inc | Hidden type touch pad structure |
| US20150138146A1 (en) * | 2013-11-19 | 2015-05-21 | Samsung Display Co., Ltd. | Display device integrated with touch screen panel |
| CN104281320A (en) * | 2014-09-23 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Touch screen, touch screen manufacturing method and touch display device |
| CN105047609A (en) * | 2015-08-27 | 2015-11-11 | 京东方科技集团股份有限公司 | Organic light emitting diode array substrate, fabrication method thereof and touch control display device |
| CN109358770A (en) * | 2018-10-30 | 2019-02-19 | 合肥鑫晟光电科技有限公司 | Touch panel and its manufacturing method, touch control display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116594516A (en) | 2023-08-15 |
| CN112015285B (en) | 2023-07-18 |
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