CN218938707U - Display panel and display device with switchable wide and narrow viewing angles - Google Patents
Display panel and display device with switchable wide and narrow viewing angles Download PDFInfo
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- CN218938707U CN218938707U CN202320152100.0U CN202320152100U CN218938707U CN 218938707 U CN218938707 U CN 218938707U CN 202320152100 U CN202320152100 U CN 202320152100U CN 218938707 U CN218938707 U CN 218938707U
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Abstract
The embodiment of the utility model discloses a display panel and a display device with switchable wide and narrow viewing angles, wherein the display panel comprises: the display box comprises a first polaroid, a color film substrate, a first liquid crystal layer and an array substrate which are sequentially arranged along the light emitting direction, wherein the array substrate comprises a substrate and a thin film transistor array layer positioned on the substrate and facing the first liquid crystal layer, and the thin film transistor array layer comprises a first metal layer; the light modulation box is positioned on the light emitting side of the display box and comprises a narrow-view-angle light modulation mode and a wide-view-angle light modulation mode; the dimming box comprises a second liquid crystal layer and a second polaroid which are sequentially arranged along the light emitting direction; and the wire grid polarizer is positioned between the first liquid crystal layer and the second liquid crystal layer, and the transmission axis of the wire grid polarizer is perpendicular to the transmission axis of the first polarizer and parallel to the transmission axis of the second polarizer. According to the embodiment of the utility model, more ambient light can be reflected by utilizing the reflectivity of the metal layer, so that the peep-proof performance in a narrow view angle mode is improved.
Description
Technical Field
The embodiment of the utility model relates to the technical field of displays, in particular to a display panel with a switchable wide and narrow viewing angles and a display device.
Background
With the development of society, people pay more and more attention to privacy protection, when liquid crystal display devices such as mobile phones and tablet computers are used in public places, contents in a display screen are inevitably leaked, so that people enjoy the convenience of the electronic display devices, and meanwhile, the people also hope to effectively protect business confidentiality and personal privacy in the public places.
At present, a shutter shielding film is attached to a display screen to achieve the peep-proof function, and when peep-proof is needed, the viewing angle can be reduced by shielding the screen by the shutter shielding film. In addition, the existing display panel also has related technology of utilizing a dimming box and a display box to realize switching between a wide viewing angle and a narrow viewing angle, the display box is used for normal picture display, the dimming box is responsible for switching the display viewing angle, the dimming box can weaken the brightness of a display picture in a narrow viewing angle mode, and meanwhile, due to the fact that the panel has ambient light reflection, the peep-proof effect is realized. However, when the conventional display panel is used for large viewing angle in a narrow viewing angle mode, the brightness of the reflected light relative to the display screen is still low, and the peep-proof effect is still not ideal.
Disclosure of Invention
The utility model provides a display panel with switchable wide and narrow viewing angles and a display device, which can enhance reflected light relative to a display picture when watching at a large viewing angle, thereby submerging the display picture and achieving a better peeping prevention effect.
In a first aspect, an embodiment of the present utility model provides a display panel with switchable wide and narrow viewing angles, including:
the display box comprises a first polaroid, a color film substrate, a first liquid crystal layer and an array substrate which are sequentially arranged along the light emitting direction, wherein the array substrate comprises a substrate and a thin film transistor array layer positioned on the substrate and facing the first liquid crystal layer, and the thin film transistor array layer comprises a first metal layer;
the light modulation box is positioned on the light emitting side of the display box and comprises a narrow-view light modulation mode and a wide-view light modulation mode; the dimming box comprises a second liquid crystal layer and a second polaroid which are sequentially arranged along the light emitting direction;
and the wire grid polarizer is positioned between the first liquid crystal layer and the second liquid crystal layer, and the transmission axis of the wire grid polarizer is perpendicular to the transmission axis of the first polarizer and parallel to the transmission axis of the second polarizer.
Optionally, the thin film transistor array layer further includes a second metal layer, and the first metal layer is located between the second metal layer and the substrate base plate;
the first metal layer comprises a first metal pattern and a second metal pattern, and the second metal pattern is insulated from the first metal pattern; the second metal layer includes a third metal pattern;
the first metal pattern and the vertical projection of the third metal pattern on a first plane are at least partially overlapped, and the overlapped area forms a thin film transistor, wherein the first plane is the plane of the substrate.
Optionally, the perpendicular projection of the second metal pattern on the first plane is located in the perpendicular projection of the third metal pattern on the first plane.
Optionally, the wire grid polarizer is located in the display box or in the dimming box or between the display box and the dimming box.
Optionally, the wire grid polarizer is located in the display box;
the array substrate further comprises a planarization layer, wherein the planarization layer is positioned on one side of the thin film transistor array layer away from the substrate;
the wire grid polarizer is located on a side of the planarization layer remote from the thin film transistor array layer.
Optionally, the first metal layer includes a first sub-metal layer and a second sub-metal layer stacked on each other, and patterns in the first sub-metal layer and the second sub-metal layer are the same.
Optionally, the dimming box further includes a first substrate and a second substrate, where the first substrate, the second liquid crystal layer, the second substrate and the second polarizer are sequentially arranged along the light emitting direction;
the opposite surfaces of the first substrate and the second substrate are respectively provided with viewing angle control electrodes which are matched with each other.
Optionally, the second liquid crystal layer is aligned parallel to the first substrate and the second substrate, and an alignment direction of the second liquid crystal layer is parallel to or perpendicular to a light transmission axis of the second polarizer.
Optionally, the display panel further includes a viewing angle compensation film, the viewing angle compensation film being located between the display box and the dimming box.
In a second aspect, an embodiment of the present utility model further provides a display device, including a display panel according to any one of the first aspect of the present utility model, and further including a backlight module, where the display panel is located on a light emitting side of the backlight module.
The embodiment of the utility model provides a display panel and a display device with switchable wide and narrow viewing angles, wherein the display panel comprises: the display box comprises a first polaroid, a color film substrate, a first liquid crystal layer and an array substrate which are sequentially arranged along the light emitting direction, wherein the array substrate comprises a substrate and a thin film transistor array layer positioned on the substrate and facing the first liquid crystal layer, and the thin film transistor array layer comprises a first metal layer; the light modulation box is positioned on the light emitting side of the display box and comprises a narrow-view-angle light modulation mode and a wide-view-angle light modulation mode; the dimming box comprises a second liquid crystal layer and a second polaroid which are sequentially arranged along the light emitting direction; and the wire grid polarizer is positioned between the first liquid crystal layer and the second liquid crystal layer, and the transmission axis of the wire grid polarizer is perpendicular to the transmission axis of the first polarizer and parallel to the transmission axis of the second polarizer. According to the embodiment of the utility model, more ambient light can be reflected by utilizing the reflectivity of the metal layer by adjusting the positions of the display box and the dimming box, so that the problem that the brightness of the reflected light relative to a display picture is still lower and the peep-proof effect is still not ideal when the traditional panel framework is used for watching at a large viewing angle in a narrow viewing angle mode is solved, and the reflected light is enhanced relative to the display picture when the display picture is watched at the large viewing angle, so that the display picture is submerged, and a better peep-proof effect is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles according to an embodiment of the present utility model;
FIG. 2 is a diagram illustrating an analysis of an optical path of the display panel of FIG. 1 in a wide viewing angle dimming mode;
FIG. 3 is a diagram illustrating an analysis of an optical path of the display panel of FIG. 1 in a narrow viewing angle dimming mode;
FIG. 4 is a schematic diagram of another display panel according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a layout of an array substrate in the display panel of FIG. 4;
FIG. 6 is a cross-sectional view of the array substrate shown in FIG. 5 along AA';
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
Fig. 1 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles according to an embodiment of the present utility model, as shown in fig. 1, the panel includes: the display box 10 comprises a first polaroid 11, a color film substrate 12, a first liquid crystal layer 13 and an array substrate 14 which are sequentially arranged along the light emitting direction, wherein the array substrate 14 comprises a substrate 142 and a thin film transistor array layer 141 positioned on the substrate 142 and facing the first liquid crystal layer, and the thin film transistor array layer 141 comprises a first metal layer 1411; a dimming box 20 located at the light emitting side of the display box 10, the dimming box 20 including a narrow viewing angle dimming mode (NVA) and a wide viewing angle dimming mode (WVA); the light modulation box 20 includes a second liquid crystal layer 21 and a second polarizing plate 22 sequentially arranged in the light emitting direction; and a wire grid polarizer 30, the wire grid polarizer 30 being positioned between the first liquid crystal layer 13 and the second liquid crystal layer 21, the light transmission axis of the wire grid polarizer 30 being perpendicular to the light transmission axis of the first polarizer 11 and being parallel to the light transmission axis of the second polarizer 21.
Further, with continued reference to fig. 1, the dimming box 20 further includes a first substrate 23 and a second substrate 24, and the first substrate 23, the second liquid crystal layer 21, the second substrate 24, and the second polarizer 22 are sequentially arranged along the light emitting direction; opposite surfaces of the first substrate 23 and the second substrate 24 are respectively provided with viewing angle control electrodes that cooperate with each other.
Specifically, in the narrow viewing angle dimming mode, a voltage signal is applied to the viewing angle control electrodes on the first substrate 23 and the second substrate 24 of the dimming box 20, at this time, a strong vertical electric field is formed between the first substrate 23 and the second substrate 24, at this time, the liquid crystal molecules in the second liquid crystal layer 21 are greatly deflected and are in an inclined state, the transmittance of the backlight emitted by the backlight module is smaller when the backlight module is viewed at a large viewing angle, and the backlight module is in a dark state, namely the display screen intensity is reduced at a large viewing angle; meanwhile, since the liquid crystal molecules in the second liquid crystal layer 21 are in an inclined state, the polarization direction of the light is changed, so that the wire grid polarizer 30 can reflect part of the ambient light, and the peep-proof effect is further enhanced.
Specifically, fig. 2 is an optical path analysis diagram of the display panel shown in fig. 1 in the wide-view dimming mode, fig. 3 is an optical path analysis diagram of the display panel shown in fig. 1 in the narrow-view dimming mode, and referring to fig. 1 to 3, a dimming process of the display panel in the wide-view dimming mode and the narrow-view dimming mode is described below:
in the wide viewing angle dimming mode, backlight emitted from the backlight module is incident by the first polarizer 11 of the display box 10, passes through the first polarizer 11, forms linearly polarized light parallel to the transmission axis of the first polarizer 11, then passes through the first liquid crystal layer 13, changes the linearly polarized light into elliptically polarized light, and then passes through the wire grid polarizer 30, wherein the transmission axis of the wire grid polarizer 30 is perpendicular to the transmission axis of the first polarizer 11, at this time, linearly polarized light parallel to the transmission axis of the wire grid polarizer 30 is formed, and sequentially passes through the first metal layer 1411 and the second liquid crystal layer 21, and since the alignment direction of the second liquid crystal layer 21 is parallel or perpendicular to the transmission axes of the first polarizer 11 and the second polarizer 22, at this time, the second liquid crystal layer 21 does not change the polarization direction of light, and finally the linearly polarized light parallel to the transmission axis of the second polarizer 22 is transmitted through the second polarizer 22. The ambient light is incident from the second polarizer 22 of the light modulation box 20, passes through the second polarizer 22, forms linearly polarized light parallel to the transmission axis of the second polarizer 22, sequentially passes through the second liquid crystal layer 21 and the first metal layer 1411, part of the ambient light is reflected by the first metal layer 1411, sequentially passes through the second liquid crystal layer 21 and the second polarizer 22, then is reflected, and the other part of the ambient light passes through the first metal layer 1411, sequentially passes through the wire grid polarizer 30 and the first liquid crystal layer 13, becomes elliptically polarized light, and finally, the linearly polarized light parallel to the transmission axis of the first polarizer 11 passes through the first polarizer 11. In the wide viewing angle mode, the wire grid polarizer 30 does not reflect ambient light.
In the narrow viewing angle dimming mode, backlight emitted from the backlight module is incident by the first polarizing plate 11 of the display box 10, passes through the first polarizing plate 11, forms linearly polarized light parallel to the transmission axis of the first polarizing plate 11, then passes through the first liquid crystal layer 13, changes the linearly polarized light into elliptically polarized light, and then passes through the wire grid polarizing plate 30, and since the transmission axis of the wire grid polarizing plate 30 is perpendicular to the transmission axis of the first polarizing plate 11, forms linearly polarized light parallel to the transmission axis of the wire grid polarizing plate 30, passes through the first metal layer 1411 and the second liquid crystal layer 21 in sequence, and applies voltage to the control electrode of the second liquid crystal layer 21 in the narrow viewing angle dimming mode, at this time, liquid crystal molecules in the second liquid crystal layer 21 deflect, so that the linearly polarized light becomes elliptically polarized light, and finally passes through the second polarizing plate 22, and is transmitted out parallel to the transmission axis of the second polarizing plate 22. The ambient light is incident from the second polarizing plate 22 of the light control box 20, passes through the second polarizing plate 22, forms linearly polarized light parallel to the light transmission axis of the second polarizing plate 22, passes through the second liquid crystal layer 21, turns into elliptically polarized light, passes through the first metal layer 1411, is reflected by the first metal layer 1411, sequentially passes through the second liquid crystal layer 21 and the second polarizing plate 22, and forms linearly polarized light parallel to the light transmission axis of the second polarizing plate 22, and is reflected; after the other part of the ambient light passes through the first metal layer 1411, the polarized light parallel to the reflection axis of the wire grid polarizer 30 in the elliptical polarized light is reflected out, and sequentially passes through the first metal layer 1411 and the second liquid crystal layer 21 to be elliptical polarized light, and finally passes through the second polarizer 22, and then the linearly polarized light parallel to the transmission axis of the second polarizer 22 is transmitted out; the polarized light parallel to the transmission axis of the wire grid polarizer 30 among the elliptically polarized light passes through the wire grid polarizer 30 and the first liquid crystal layer 13, and becomes elliptically polarized light, and finally passes through the first polarizer 11, and the linearly polarized light parallel to the transmission axis of the first polarizer 11 is transmitted. In the narrow viewing angle dimming mode, the wire grid polarizer 30 reflects ambient light.
In the display panel provided by the embodiment of the utility model, although metal reflection is added in the wide-view dimming mode, the wire grid polarizer 30 does not reflect ambient light, and meanwhile, the brightness of a display picture is higher, so that the viewing experience is not influenced; in the narrow viewing angle dimming mode, the wire grid polarizer 30 is utilized to reflect the ambient light, and the metal layer is added to reflect the ambient light, so that the reflected light is enhanced relative to the display picture when the display picture is watched under a large viewing angle, thereby submerging the display picture and achieving a better peeping-proof effect. In addition, the embodiment of the utility model also carries out a comparison test aiming at the peep-proof performance of the display panel.
Table 1 is a comparison table of measured data of the related art viewing angle switchable display panel and the viewing angle switchable display panel provided by the present application:
the luminance @ center in table 1 above represents the percentage of luminance at different viewing angles to the center luminance of the display panel, wherein the percentage of luminance at 45 ° up, down, left, and right under WVA and NVA was tested to compare with the data of the related art viewing angle switchable display panel, and the percentage of luminance at 45 ° up, down, left, and right viewing angles of the display panel of the present application is comparable to the percentage of luminance of the related art display panel in the wide viewing angle mode. However, in the narrow viewing angle mode, the brightness percentage of the display panel in the embodiment of the utility model is obviously reduced in the vertical and horizontal 45 ° viewing angles compared with the display panel in the related art, that is, the display panel provided by the application has a relatively darker display screen in the large viewing angle. Therefore, the display panel provided by the application is better in peeping prevention effect and can replace the existing wide-narrow visual angle switching panel design.
The embodiment of the utility model provides a display panel with switchable wide and narrow viewing angles, which comprises the following components: the display box comprises a first polaroid, a color film substrate, a first liquid crystal layer and an array substrate which are sequentially arranged along the light emitting direction, wherein the array substrate comprises a substrate and a thin film transistor array layer positioned on the substrate and facing the first liquid crystal layer, and the thin film transistor array layer comprises a first metal layer; the light modulation box is positioned on the light emitting side of the display box and comprises a narrow-view-angle light modulation mode and a wide-view-angle light modulation mode; the dimming box comprises a second liquid crystal layer and a second polaroid which are sequentially arranged along the light emitting direction; and the wire grid polarizer is positioned between the first liquid crystal layer and the second liquid crystal layer, and the transmission axis of the wire grid polarizer is perpendicular to the transmission axis of the first polarizer and parallel to the transmission axis of the second polarizer. According to the embodiment of the utility model, more ambient light can be reflected by utilizing the reflectivity of the metal layer by adjusting the positions of the display box and the dimming box, so that the problem that the brightness of the reflected light relative to a display picture is still lower and the peep-proof effect is still not ideal when the traditional panel framework is used for watching at a large viewing angle in a narrow viewing angle mode is solved, and the reflected light is enhanced relative to the display picture when the display picture is watched at the large viewing angle, so that the display picture is submerged, and a better peep-proof effect is achieved.
Optionally, fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present utility model, fig. 5 is a schematic layout diagram of an array substrate in the display panel shown in fig. 4, fig. 6 is a cross-sectional view along AA' of the array substrate shown in fig. 4, and referring to fig. 4, fig. 5, and fig. 6, the thin film transistor array layer 141 further includes a second metal layer 1412, and the first metal layer 1411 is located between the second metal layer 1412 and the substrate 142; the first metal layer 1411 includes a first metal pattern 14111 and a second metal pattern 14112, the second metal pattern 14112 being insulated from the first metal pattern 14111; the second metal layer includes a third metal pattern 14121; the vertical projection of the first metal pattern 14111 and the third metal pattern 14121 on a first plane, which is the plane of the substrate 142, at least partially overlaps and the overlapping region forms a thin film transistor.
Alternatively, referring to fig. 5, the perpendicular projection of the second metal pattern 14112 on the first plane is located in the perpendicular projection of the third metal pattern 14121 on the first plane.
Alternatively, referring to FIG. 1, in an embodiment of the present utility model, a wire grid polarizer 30 is located in the display box 10. Specifically, the array substrate 14 further includes a planarization layer 143, where the planarization layer 143 is located on a side of the thin film transistor array layer 141 away from the substrate 142; the wire grid polarizer 30 is located on the side of the planarization layer 143 remote from the thin film transistor array layer 141.
In other embodiments of the utility model, the wire grid polarizer 30 may also be located in the display box 10 or in the dimming box 20 or between the display box 10 and the dimming box 20. For example, the first substrate 23 may be positioned on a side close to the second liquid crystal layer 21, or may be positioned between the substrate 142 and the first substrate 23.
Alternatively, the first metal layer 1411 includes a first sub-metal layer 14113 and a second sub-metal layer 14114 stacked on each other, and the patterns in the first sub-metal layer 14113 and the second sub-metal layer 14114 are the same.
Specifically, referring to fig. 1, the first sub-metal layer 14113 and the second sub-metal layer 14114 are metal AL and MO respectively, in other embodiments of the present utility model, the first sub-metal layer 14113 may be other metals with higher reflectivity, such as silver (Ag), and the second sub-metal layer 14114 is oxidized to form a metal oxide, such as molybdenum oxide (MoOx), which is black, so as to avoid the reflection of the backlight by the first metal layer 1411.
Optionally, the display panel further includes a viewing angle compensation film 40, and the viewing angle compensation film 40 is located between the display case 10 and the dimming case 20. The viewing angle compensation film 40 can enhance the narrow viewing angle effect and can compensate for chromatic aberration, resulting in better imaging quality.
Based on the same concept, the embodiment of the present utility model further provides a display device, and fig. 7 is a schematic structural diagram of the display device provided by the embodiment of the present utility model, as shown in fig. 7, where the display device includes a display panel provided by any one of the embodiments, and further includes a backlight module 50, where the display panel is located on an light emitting side of the backlight module 50 and is used for emitting backlight. The display device comprises the display panel provided by the embodiment of the utility model, so that the display device has the corresponding beneficial effects provided by the embodiment of the utility model, and the description is omitted here. The display device may be an electronic device such as a vehicle-mounted display device, a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and the like, which is not limited in the embodiment of the present utility model.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A display panel switchable between wide and narrow viewing angles, comprising:
the display box comprises a first polaroid, a color film substrate, a first liquid crystal layer and an array substrate which are sequentially arranged along the light emitting direction, wherein the array substrate comprises a substrate and a thin film transistor array layer positioned on the substrate and facing the first liquid crystal layer, and the thin film transistor array layer comprises a first metal layer;
the light modulation box is positioned on the light emitting side of the display box and comprises a narrow-view light modulation mode and a wide-view light modulation mode; the dimming box comprises a second liquid crystal layer and a second polaroid which are sequentially arranged along the light emitting direction;
and the wire grid polarizer is positioned between the first liquid crystal layer and the second liquid crystal layer, and the transmission axis of the wire grid polarizer is perpendicular to the transmission axis of the first polarizer and parallel to the transmission axis of the second polarizer.
2. The display panel of claim 1, wherein the thin film transistor array layer further comprises a second metal layer, the first metal layer being located between the second metal layer and the substrate base plate;
the first metal layer comprises a first metal pattern and a second metal pattern, and the second metal pattern is insulated from the first metal pattern; the second metal layer includes a third metal pattern;
the first metal pattern and the vertical projection of the third metal pattern on a first plane are at least partially overlapped, and the overlapped area forms a thin film transistor, wherein the first plane is the plane of the substrate.
3. The display panel of claim 2, wherein a perpendicular projection of the second metal pattern on the first plane is located in a perpendicular projection of the third metal pattern on the first plane.
4. The display panel of claim 1, wherein the wire grid polarizer is located in the display box or in the dimming box or between the display box and the dimming box.
5. The display panel of claim 4, wherein the wire grid polarizer is located in the display box;
the array substrate further comprises a planarization layer, wherein the planarization layer is positioned on one side of the thin film transistor array layer away from the substrate;
the wire grid polarizer is located on a side of the planarization layer remote from the thin film transistor array layer.
6. The display panel of claim 1, wherein the first metal layer comprises a first sub-metal layer and a second sub-metal layer stacked on each other, the patterns in the first sub-metal layer and the second sub-metal layer being identical.
7. The display panel according to claim 1, wherein the dimming box further comprises a first substrate and a second substrate, the first substrate, the second liquid crystal layer, the second substrate, and the second polarizing plate being sequentially arranged along the light-emitting direction;
the opposite surfaces of the first substrate and the second substrate are respectively provided with viewing angle control electrodes which are matched with each other.
8. The display panel according to claim 7, wherein the second liquid crystal layer is aligned parallel to the first substrate and the second substrate, and an alignment direction of the second liquid crystal layer is parallel to or perpendicular to a light transmission axis of the second polarizing plate.
9. The display panel of claim 1, further comprising a viewing angle compensation film positioned between the display box and the dimming box.
10. A display device comprising the display panel according to any one of claims 1-9, and further comprising a backlight module, wherein the display panel is located on a light emitting side of the backlight module.
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| CN202320152100.0U CN218938707U (en) | 2023-02-02 | 2023-02-02 | Display panel and display device with switchable wide and narrow viewing angles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117157579A (en) * | 2023-05-30 | 2023-12-01 | 昆山龙腾光电股份有限公司 | Display panel, display device and driving method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117157579A (en) * | 2023-05-30 | 2023-12-01 | 昆山龙腾光电股份有限公司 | Display panel, display device and driving method |
| WO2024243831A1 (en) * | 2023-05-30 | 2024-12-05 | 昆山龙腾光电股份有限公司 | Display panel, display device, and driving method |
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