CN210323698U - Display panel and display device - Google Patents
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- CN210323698U CN210323698U CN201920874283.0U CN201920874283U CN210323698U CN 210323698 U CN210323698 U CN 210323698U CN 201920874283 U CN201920874283 U CN 201920874283U CN 210323698 U CN210323698 U CN 210323698U
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Abstract
The application discloses display panel and display device, display panel includes: a plurality of common lines, a plurality of data lines and a plurality of gate lines; the gate lines are perpendicular to the data lines and define a plurality of pixel units; the pixel unit includes a pixel electrode and a thin film transistor connected to the pixel electrode, the thin film transistor being insulated from the common line; in the direction perpendicular to the display panel, the projection of the common line is overlapped with the projection of the source electrode of the thin film transistor to form an overlapping area. The bright spots of the display panel can be effectively eliminated, and the dark spots are realized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the continuous development and progress of science and technology, the display panel becomes the mainstream product of the display due to the thin body, power saving, low radiation and other hot spots, and is widely applied. The display panel includes a thin film Transistor-Liquid crystal display (TFT-LCD). The thin film transistor liquid crystal display refracts light rays of the backlight module to generate pictures by controlling the rotation direction of liquid crystal molecules, and has the advantages of thin body, electricity saving, no radiation and the like.
In the manufacturing process of the display panel, due to environmental or machine equipment factors, and due to factors such as metal residues and foreign matters, the channel of the thin film transistor may be short-circuited and loses the switching function, so that pixels are displayed as bright spots, and the display effect of the display panel is affected.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a display panel and a display device, when a bright spot appears on the display panel, the bright spot can be effectively eliminated, and the darkening of the spot is realized.
The application discloses display panel includes: a plurality of common lines, a plurality of data lines and a plurality of gate lines; the gate lines are perpendicular to the data lines and define a plurality of pixel units; the pixel unit includes a pixel electrode and a thin film transistor connected to the pixel electrode, the thin film transistor being insulated from the common line; in the direction perpendicular to the display panel, the projection of the common line is overlapped with the projection of the source electrode of the thin film transistor to form an overlapping area.
Optionally, the common line includes a main common line and a first sub common line, one end of the first sub common line being connected to the main common line; a projection of the other end of the first sub common line overlaps a projection of the source electrode.
Optionally, the source includes a main source line and a first auxiliary source line, and one end of the first auxiliary source line is connected to the main source line; the projection of the other end of the first auxiliary source line overlaps the projection of the common line.
Optionally, the source electrode comprises a main source line and a second sub source line, and the common line comprises a main common line and a second sub common line; one end of the second auxiliary source line is connected with the main source line, and one end of the second auxiliary common line is connected with the main common line; and the projection of the other end of the second auxiliary source line is partially overlapped with the projection of the other end of the second auxiliary common line, and the second auxiliary common line and the second auxiliary source line are mutually insulated.
Alternatively, the first sub common line extends from the main common line in a direction of the thin film transistor, forming the overlap region.
Optionally, the first auxiliary source line extends from the main source line in a direction toward the common line to form the overlap region, and the first auxiliary source line is parallel to the gate line.
Optionally, the first auxiliary source line is composed of a first extension line and a first auxiliary extension line, the other end of the first extension line is connected to the main source line, the first extension line extends from the main source line to the common line, and the first extension line is parallel to the gate line; one end of the first auxiliary extension line is connected with one end of the first extension line, the first auxiliary extension line extends from the first extension line to the direction of the gate line, and the first auxiliary extension line is parallel to the data line; a projection of the other end of the first auxiliary extension line overlaps a projection of the common line, the first auxiliary extension line is insulated from the common line, and the common line is located at the same level as the gate line; a portion of the common line perpendicular to the gate line is disconnected at the gate line, insulated from the gate line.
Optionally, the second sub source line is composed of a second extension line and a second sub extension line, the other end of the second extension line is connected to the main source line, the second extension line extends from the main source line in a direction toward the common line, and the second extension line is parallel to the gate line; one end of the second secondary extension line is connected with one end of a second extension line, the second secondary extension line extends from the second extension line to the direction of the gate line, and the second secondary extension line is parallel to the data line; a projection of the other end of the second subsidiary extension line overlaps a projection of the second subsidiary common line, the second subsidiary extension line being insulated from the common line, the common line being in the same layer as the gate line; a portion of the common line perpendicular to the gate line is disconnected at the gate line, insulated from the gate line.
The application also discloses a display panel includes: the pixel structure comprises a plurality of common lines, a plurality of data lines and a plurality of gate lines, wherein the plurality of gate lines are perpendicular to the plurality of data lines and define a plurality of pixel units; the pixel unit comprises a pixel electrode and a thin film transistor connected with the pixel electrode; in the direction perpendicular to the display panel, the projection of the common line is partially overlapped with the projection of the source electrode of the thin film transistor to form an overlapping area; the common line comprises a repair point, the repair point is positioned in an overlapping area, and the repair point is electrically connected with the common line and a source electrode of the thin film transistor; the data line is provided with at least one cut-off point, and the cut-off point is positioned at the position where the data line is electrically connected with the thin film transistor; the thin film transistor is disconnected from the data line at the cut-off point.
The application also discloses a display device which comprises the display panel.
Compared with the scheme that the pixel electrode is broken through by laser to realize the electric connection between the pixel electrode and the common electrode, when a bright spot appears on the display panel, the repair point can be formed by breaking through laser in the overlapping area of the common line and the thin film transistor to realize the electric connection between the common line and the thin film transistor, simultaneously, the connection between the thin film transistor and the data line is cut off, and the signal transmission of a data signal to the pixel electrode is cut off; at this time, the common voltage of the common line is transmitted to the pixel electrode through the thin film transistor, and the voltage of the pixel electrode is the voltage of the common line, so that the voltages of the common line and the common electrode are equal and are common voltages; the voltages of the common electrode and the pixel electrode are equal, and for a display panel adopting a VA (vertical alignment) type liquid crystal, in this case, liquid crystal molecules corresponding to the pixel electrode do not deflect, and at this time, light cannot pass through, the screen is black, and the darkening operation is completed; the repairing difficulty is remarkably reduced, the generation of splashing fragments of the pixel electrode is avoided, the success rate of performing darkening treatment on the pixel is improved, and the display effect of the display panel is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a display panel according to another embodiment of the present application;
FIG. 4 is an equivalent circuit diagram of a display panel according to an embodiment of the present application;
FIG. 5 is a cross-sectional view at A in FIG. 3 of the present application;
fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the present application;
fig. 7 is a schematic structural diagram of a display panel according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of a display panel according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of a display panel according to another embodiment of the present application.
100, a display device; 200. a display panel; 210. a common line; 211. the main line and the public line are collinear; 212. a first sub common line; 213. a second sub common line; 220. a data line; 230. a gate line; 300. a pixel unit; 400. a pixel electrode; 500. a thin film transistor; 600. a drain electrode; 610. a main drain line; 620. a first sub-drain line; 621. a first extension line; 622. a first secondary extension line; 630. a second pair of drain lines; 631. a second extension line; 632. a second secondary extension line; 700. repairing points; 800. cutting points; 900. a source electrode; 910. a gate insulating layer; 920. a passivation layer; 930. and a gate.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application is described in detail below with reference to the figures and alternative embodiments.
As shown in fig. 1, one method for performing a darkening process on pixels by the display panel 200 known by the inventor is: the thin film transistor 500 is disconnected from the data line 220 and the pixel electrode 400, and then the overlapping position of the pixel electrode 400 and the common electrode is irradiated by laser, so that the pixel electrode and the common electrode are fused together to realize conduction under high heat, and thus, the pixel can be displayed as a dark spot. However, when a COA (Color Filter On Array, Color Filter Array) or organic planarization layer is used, a very thick insulating medium is added between the pixel electrode 400 and the common electrode, and if the darkening method is still used, laser power needs to be added to overcome an extra thick insulating layer, so that the repair difficulty is increased, the temperature is increased due to the increase of the laser power, the Color resistance and the pixel electrode 400 are easily exploded and turned up at a higher temperature, the appearance of the pixel electrode 400 is changed, so that the liquid crystal alignment is abnormal, and meanwhile, the splashed fragments are also easy to generate a broken bright point problem, so that the darkening fails.
As shown in fig. 2 to 5, the present application discloses a display device 100 including a display panel 200 described below. The display panel 200 includes: a plurality of common lines 210, a plurality of data lines 220, and a plurality of gate lines 230; the plurality of gate lines 230 are disposed perpendicular to the plurality of data lines 220 to define a plurality of pixel units 300; the pixel unit 300 includes a pixel electrode 400 and a thin film transistor 500 connected to the pixel electrode 400, the thin film transistor 500 being insulated from the common line 210; in a direction perpendicular to the display panel 200, a projection of the common line 210 overlaps a projection of the source electrode 900 of the thin film transistor 500 to form an overlap region.
When the display panel 200 has a bright spot and needs to be repaired, the repaired display panel 200 comprises a common line 210, the common line 210 comprises a repair point 700, the repair point 700 is located in the overlapping area, and the repair point 700 is electrically connected with the common line 210 and the source 900 of the thin film transistor 500; the data line 220 has at least one cut-off point 800, and the cut-off point 800 is located at a position where the data line 220 is electrically connected to the source 900 of the thin film transistor 500; and the cut-off point 800 is located at a side of the connection of the source 900 of the thin film transistor 500 and the common line 210, which is far away from the common line 210; the source 900 of the thin film transistor 500 is disconnected from the data line 220 at the cut-off point 800. When a bright spot occurs on the display panel 200, laser breakdown is performed at the repair spot 700, so that the source 900 of the thin film transistor 500 is electrically connected to the common line 210. And the repair point 700 located in the overlap region of the present application may be one or more, and when the source electrode 900 and the common line 210 are laser welded, a plurality of repair points 700 may be broken down by laser to achieve welding, so that the connection effect of the electrical connection is better.
Compared with the scheme that the pixel electrode 400 is broken down by laser, and the pixel electrode 400 and the common electrode are electrically connected, in the scheme, when a bright spot appears on the display panel 200, the common line 210 and the source electrode 900 of the thin film transistor 500 can be electrically connected by breaking down the repair point 700 located in the overlapping area of the common line 210 and the source electrode 900 of the thin film transistor 500 by laser, and meanwhile, the connection between the source electrode 900 and the data line 220 is cut off, and the signal transmission of a data signal to the pixel electrode 400 is disconnected; at this time, the common voltage of the common line 210 is transmitted to the pixel electrode 400 through the source 900 of the thin film transistor 500, and the voltage of the pixel electrode 400 is the voltage of the common line 210, so that the voltages of the common line 210 and the common electrode are equal and are both the common voltage; the voltages of the common electrode and the pixel electrode 400 are equal, and in this case, for the display panel 200 using a VA (vertical alignment) liquid crystal, the liquid crystal molecules corresponding to the pixel electrode 400 do not deflect, the liquid crystal molecules are arranged perpendicular to the polarizer, at this time, light cannot pass through, the screen is black, and the darkening operation is completed; the repair difficulty of the application is remarkably reduced, the generation of splash fragments of the pixel electrode 400 is avoided, the source 900 of the thin film transistor 500 is far away from the pixel electrode 400, the interference to the pixel electrode 400 during laser repair is reduced, and the display effect of the display panel 200 is improved.
Correspondingly, the common line 210 may extend to a region of the corresponding source electrode 900, as shown in fig. 3, the common line 210 includes a main common line 210 and a first sub common line 212, and one end of the first sub common line 212 is connected to the main common line 210; a projection of the other end of the first sub common line 212 partially overlaps a projection of the source electrode 900. The first sub common line 212 extends from the main common line 210 in a direction of the thin film transistor 500, forming the overlap region. The first sub common line 212 is connected to the source electrode 900 by the shortest path, reducing the influence of the extension of the first sub common line 212 on the light transmittance of the display panel 200. When the display panel 200 has a bright spot, the laser acts on the repair spot 700 at the overlapping position of the first auxiliary common line 212 and the source electrode 900, the first auxiliary common line 212 and the source electrode 900 are welded, the first auxiliary common line 212 is conducted with the source electrode 900 of the thin film transistor 500, the voltage of the pixel electrode 400 is equal to the voltage of the common line 210, and is further equal to the voltage of the common electrode, and therefore the corresponding liquid crystal molecules are not deflected and guided to complete the dark spot operation; simple structure and convenient operation.
Fig. 4 is an equivalent circuit diagram of an embodiment of the present application, wherein a Date (data line) 220 is connected to a source 900 of a TFT (thin film transistor) 500, and a Gate (Gate line) 230 controls the TFT (thin film transistor) 500 to be turned on; the pixel electrode 400 and the Acom 210 form a Cst (storage capacitor), and the pixel electrode 400 and the common electrode form a Clc (liquid crystal capacitor). Before the darkening operation is performed, the data line 220 is disconnected from the source 900 of the TFT (thin film transistor) 500 (shown as x in the figure), and then a laser is used to perform a welding process at a position where the Acom (common line) 210 overlaps the TFT (thin film transistor) 500, so that the Acom (common line) 210 is conducted with the source 900 of the TFT (thin film transistor) 500, and the voltage of the pixel electrode 400 is equal to the voltage of the common line 210 and further equal to the voltage of the common electrode, thereby preventing the corresponding liquid crystal molecules from deflecting and guiding light to complete the darkening operation.
Fig. 5 is a cross-sectional view taken at a in fig. 3, and as shown in fig. 3, a gate electrode 930 of the thin film transistor 500 is connected to the gate line 230; the gate electrode 930, the gate line 230 are formed at a different layer from the common line 210; a gate insulating layer 910 is formed on the gate electrode 930 and the common line 210; a source electrode 900 and a drain electrode 600 of the thin film transistor 500 are formed on the gate insulating layer 910; a passivation layer 920 is formed on the source electrode 900 and the drain electrode 600; the source electrode 900 of the thin film transistor 500 overlaps the common line 210, and a gate insulating layer 910 is interposed between the source electrode 900 of the thin film transistor 500 and the common line 210, so that the source electrode 900 is insulated from the common line 210; when the display panel 200 has bright spots and needs to be darkened, the laser penetrates through the source electrode 900 and the gate insulating layer 910, so that the source electrode 900 and the common line 210 are welded.
Correspondingly, the source electrode 900 may also extend to a region corresponding to the common line 210, as shown in fig. 6, the source electrode 900 includes a main source electrode 900 line and a first auxiliary source electrode 900 line, and one end of the first auxiliary source electrode 900 line is connected to the main source electrode 900 line; the projection of the other end of the first sub-source 900 line partially overlaps the projection of the common line 210. The first sub-source 900 line extends from the main source 900 line toward the common line 210 to form the overlapping region, and the first sub-source 900 line is parallel to the gate line 230. When the display panel 200 has a bright spot, the source electrode 900 is electrically connected to the common line 210 by laser-breaking down the position where the source electrode 900 overlaps the common line 210.
In addition, the source electrode 900 may also be folded to overlap the common line 210, the common line 210 is disconnected at the gate electrode 930, as shown in fig. 7, the first sub source electrode 900 line is composed of a first extension line 621 and a first sub extension line 622 which are connected, the other end of the first extension line 621 is connected to the main source electrode 900 line, the first extension line 621 extends from the main source electrode 900 line to the direction of the common line 210, and the first extension line 621 is parallel to the gate line 230; one end of the first sub-extension line 622 is connected to one end of the first extension line 621, the first sub-extension line 622 extends from the first extension line 621 to the gate line 230, and the first sub-extension line 622 is parallel to the data line 220; the projection of the other end of the first auxiliary extension line 622 overlaps the projection of the common line 210, the first auxiliary extension line 622 is insulated from the common line 210, and the common line 210 and the gate line 230 are located at the same layer; a portion of the common line 210 perpendicular to the gate line 230 is disconnected at the gate line 230, insulated from the gate line 230. When the display panel 200 has a bright spot, laser welding is realized by laser breaking through the overlapping position of the source 900 and the common line 210, and meanwhile, the scattering of fragments of the pixel electrode 400 is avoided, so that the bright spot condition of the pixel is eliminated.
The source electrode 900 and the common line 210 may overlap after extending, as shown in fig. 8, where the source electrode 900 includes a main source electrode 900 line and a second sub source electrode 900 line, and the common line 210 includes a main common line 210 and a second sub common line 213; one end of the second sub source 900 line is connected to the main source 900 line, and one end of the second sub common line 213 is connected to the main common line 210; the projection of the other end of the second sub source 900 line overlaps the projection of the other end of the second sub common line 213, and the second sub common line 213 and the second sub source 900 line are insulated from each other. The second sub-source 900 line is composed of a second extension line 631 and a second sub-extension line 632, the other end of the second extension line 631 is connected to the main source 900 line, the second extension line 631 extends from the main source 900 line in the direction of the common line 210, and the second extension line 631 is parallel to the gate line 230; the second sub-extension line 632 has one end connected to one end of a second extension line 631, the second sub-extension line 632 extends from the second extension line 631 in the direction of the gate line 230, and the second sub-extension line 632 is parallel to the data line 220; the projection of the other end of the second sub-extension line 632 partially overlaps the projection of the second sub-common line 213, the second sub-extension line 632 is insulated from the common line 210, and the common line 210 is located at the same level as the gate line 230; a portion of the common line 210 perpendicular to the gate line 230 is disconnected at the gate line 230, insulated from the gate line 230.
When the thin film transistor 500 of the display panel 200 is short-circuited, a bright spot phenomenon occurs, in the present application, the overlapping portion of the second auxiliary common line 213 and the second auxiliary extension line 632 is broken down by laser, so that the two lines are electrically connected, the common voltage signal of the common line 210 is transmitted to the drain electrode 600 through the source electrode 900, and further transmitted to the pixel electrode 400 through the drain electrode 600, so that the voltages of the pixel electrode 400 and the common electrode are the same, the corresponding liquid crystal is not deflected, and the display panel 200 realizes a dark spot.
It should be noted that, in the present application, the common line 210 and the gate line 230 may be formed in the same layer and in the same process, but the common line 210 and the gate line 230 do not overlap; the common line 210 and the gate line 230 may also be different layers and formed in different processes; the second sub common line 213 of the common line 210 may be extended to a suitable position to overlap the second sub extension line 632, thereby reducing interference and influence on other circuits. As shown in fig. 9, the common line 210 and the gate line 230 are formed in the same layer and in the same process.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A display panel, comprising:
a plurality of common lines;
a plurality of data lines; and
a plurality of gate lines disposed perpendicular to the plurality of data lines, defining a plurality of pixel units; the pixel unit includes a pixel electrode and a thin film transistor connected to the pixel electrode, the thin film transistor being insulated from the common line;
in the direction perpendicular to the display panel, the projection of the common line is overlapped with the projection of the source electrode of the thin film transistor to form an overlapping area.
2. The display panel of claim 1, wherein the common line comprises a main common line and a first sub common line, one end of the first sub common line being connected to the main common line; a projection of the other end of the first sub common line overlaps a projection of the source electrode.
3. A display panel according to claim 1, wherein the source electrode comprises a main source line and a first sub source line, one end of the first sub source line being connected to the main source line; the projection of the other end of the first auxiliary source line overlaps the projection of the common line.
4. The display panel of claim 1, wherein the source electrode comprises a main source line and a second sub source line, and the common line comprises a main common line and a second sub common line; one end of the second auxiliary source line is connected with the main source line, and one end of the second auxiliary common line is connected with the main common line; and the projection of the other end of the second auxiliary source line is partially overlapped with the projection of the other end of the second auxiliary common line, and the second auxiliary common line and the second auxiliary source line are mutually insulated.
5. A display panel according to claim 2, wherein the first sub common line extends from the main common line in a direction toward the thin film transistor, forming the overlapping region.
6. A display panel according to claim 3, wherein the first sub source line extends from the main source line in a direction toward the common line to form the overlapping region, and the first sub source line is parallel to the gate line.
7. A display panel according to claim 3, wherein the first sub source line is composed of a first extension line and a first sub extension line, the other end of the first extension line is connected to the main source line, the first extension line extends from the main source line in a direction toward the common line, and the first extension line is parallel to the gate line;
one end of the first auxiliary extension line is connected with one end of the first extension line, the first auxiliary extension line extends from the first extension line to the direction of the gate line, and the first auxiliary extension line is parallel to the data line; a projection of the other end of the first auxiliary extension line overlaps a projection of the common line, the first auxiliary extension line is insulated from the common line, and the common line is located at the same level as the gate line; a portion of the common line perpendicular to the gate line is disconnected at the gate line, insulated from the gate line.
8. A display panel according to claim 4, wherein the second sub source line is composed of a second extension line and a second sub extension line, the other end of the second extension line is connected to the main source line, the second extension line extends from the main source line in a direction toward the common line, and the second extension line is parallel to the gate line;
one end of the second secondary extension line is connected with one end of a second extension line, the second secondary extension line extends from the second extension line to the direction of the gate line, and the second secondary extension line is parallel to the data line; a projection of the other end of the second subsidiary extension line overlaps a projection of the second subsidiary common line, the second subsidiary extension line being insulated from the common line, the common line being in the same layer as the gate line; a portion of the common line perpendicular to the gate line is disconnected at the gate line, insulated from the gate line.
9. A display panel, comprising:
a plurality of common lines;
a plurality of data lines; and
a plurality of gate lines disposed perpendicular to the plurality of data lines, defining a plurality of pixel units;
the pixel unit comprises a pixel electrode and a thin film transistor connected with the pixel electrode; in the direction perpendicular to the display panel, the projection of the common line is partially overlapped with the projection of the source electrode of the thin film transistor to form an overlapping area;
the common line comprises a repair point, the repair point is positioned in an overlapping area, and the repair point is electrically connected with the common line and a source electrode of the thin film transistor;
the data line is provided with at least one cut-off point, and the cut-off point is positioned at the position where the data line is electrically connected with the thin film transistor; the thin film transistor is disconnected from the data line at the cut-off point.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN201920874283.0U CN210323698U (en) | 2019-06-10 | 2019-06-10 | Display panel and display device |
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| CN201920874283.0U CN210323698U (en) | 2019-06-10 | 2019-06-10 | Display panel and display device |
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| CN210323698U true CN210323698U (en) | 2020-04-14 |
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