CN104423086A - Display and display method thereof - Google Patents

Abstract

A display and a display method thereof are provided. The display comprises a first display panel and a second display panel, and the display method of the display comprises the following steps. Whether the display is set to single-sided display is detected. When the display is set to be single-sided display, the first display panel and the second display panel are set to display an image picture and a black picture respectively.

Description

Display and display method thereof

technical field

The invention relates to a display and a display method thereof, in particular to a double-sided display and a display method thereof.

Background technique

Flat panel display is the communication interface between people and information, so its development is particularly important. Among various types of flat panel displays, Liquid Crystal Display (LCD) has superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference, so LCD displays are very popular among consumers.

With the progress of display technology, the application fields of liquid crystal displays are very wide. Among them, the liquid crystal display with double-sided display function can be applied to portable consumer electronic devices, or used as a large-size liquid crystal display television for viewing by the public. Generally speaking, two liquid crystal display panels can be used to complete the manufacture of a double-sided liquid crystal display, so as to achieve the purpose of double-sided display. However, when the double-sided liquid crystal display is used for single-sided display, the displayed display panel may affect the non-displayed display panel to cause light leakage, thereby affecting the user's visual experience.

Chinese Patent No. 1284032C discloses a display device. The liquid crystal display device has a pair of liquid crystal units and a backlight. Absorbing polarizing plates are arranged on the viewing side and the back side of the display device, and the direction of the polarization axis is changed by switching the voltage of the liquid crystal cell. By controlling the polarization axis, the polarization direction of the reflecting polarizing plate and the absorbing polarizing plate, the light and dark display of the viewing side of the display device is determined.

China Taiwan Patent No. M286382 discloses a double-sided liquid crystal display. The double-sided display liquid crystal display includes two liquid crystal display panels, two light guide plates, and two light sources respectively located on one side of the two light guide plates. Two reflection sheets are arranged between the two light guide plates.

China Taiwan Patent No. I232281 discloses a double-sided liquid crystal display including a light guide plate, a light source, a first optical film, a second optical film, a first liquid crystal display panel, and a second liquid crystal display panel. The light emitting source is located on the third surface of the light guide plate, and the light is injected into the light guide plate by means of end surface illumination. The light emitting source can also be a cold cathode fluorescent tube or a light emitting diode.

Taiwan Patent No. I258035 discloses a double-sided display panel module structure, the first display panel module provides a front image display function, and the second display panel module provides a rear image display function. The common backlight module is arranged between the first display panel module and the second display panel module to provide a common light source required for displaying images. The first and second display panels are liquid crystal display panels.

Contents of the invention

The present invention provides a display and a display method thereof, which can reduce the light leakage generated when the double-sided display is applied to single-sided display, so as to reduce the impact of the light leakage on the user's visual experience.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a display, including a first display panel; a second display panel, disposed on an opposite side of the first display panel ; a backlight module, configured between the first display panel and the second display panel, the backlight module has at least one light source and the backlight module is used to provide the surface light source required by the first display panel and the second display panel; and a display control The unit, wherein the display control unit controls the first display panel to display a video image and controls the second display panel to display a black image when the display is set to display on one side of the first display panel.

In an embodiment of the present invention, the display control unit controls the second display panel to display an image image and controls the first display panel to display a black image when the display is set to display on one side of the second display panel.

In an embodiment of the present invention, the display further includes a base, the base has a reference plane and the base is pivotally connected to the first display panel and the second display panel, wherein a display surface of the first display panel and the reference plane of the base have A first included angle, a display surface of the second display panel and the reference plane of the base have a second included angle, when the first included angle is less than or equal to a viewing angle, the display control unit sets the display as the second display panel Single sided display.

In an embodiment of the present invention, when the second included angle is less than or equal to a viewing angle, the display control unit sets the display to display on one side of the first display panel.

In an embodiment of the present invention, it further includes a backlight control unit, wherein the light source includes a first light source and a second light source, the first light source is used to provide the surface light source required by the first display panel, and the second light source is used to The surface light source required by the second display panel is provided, and when the display is set to display on one side of the first display panel, the backlight control unit controls the second light source to be turned off.

In an embodiment of the present invention, when the display is set to display on one side of the second display panel, the backlight control unit controls the first light source to be turned off.

In an embodiment of the present invention, the backlight module further includes a spacer disposed between the first light source and the second light source.

In an embodiment of the present invention, it further includes a backlight control unit, wherein the light source includes a first light source and a second light source, the first light source is used to provide the surface light source required by the first display panel, and the second light source is used to The surface light source required by the second display panel is provided, and when the display is set to display on one side of the first display panel, the backlight control unit controls the second light source to be turned off.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention also provides a display method, the display includes a first display panel, a second display panel and a display control unit, The display method includes a display control unit detecting whether the display is set to display on one side of the first display panel; and when the display is set to display on one side of the first display panel, the display control unit sets the first display panel to display an image frame and The second display panel displays a black picture.

An embodiment of the present invention also provides a method for displaying a display. When the display is set to display on one side of the second display panel, the display control unit sets the second display panel to display an image frame and the first display panel to display a black screen.

An embodiment of the present invention also provides a method for displaying a display. The display further includes a first light source and a second light source. The first light source is used to provide the surface light source required by the first display panel, and the second light source is used to provide The surface light source required by the second display panel, the display method further includes turning off the second light source when the display is set to display on one side of the first display panel.

An embodiment of the present invention also provides a method for displaying a display. When the display is set to display on one side of the second display panel, the first light source is turned off.

An embodiment of the present invention also provides a method for displaying a display, wherein the display further includes a base, a display surface of the first display panel and a reference plane of the base have a first included angle, and a display surface of the second display panel The surface and the reference plane have a second included angle, and the display method further includes setting the display as a single-sided display on the second display panel when the first included angle is less than or equal to a viewing angle.

An embodiment of the present invention also provides a method for displaying a display. When the second included angle is less than or equal to a viewing angle, the display is set to display on one side of the first display panel.

An embodiment of the present invention also provides a method for displaying a display, wherein the display further includes a base, a display surface of the first display panel and a reference plane of the base have a first included angle, and a display surface of the second display panel There is a second included angle with the reference plane, and the display method further includes: when the first included angle is less than or equal to a viewing angle, setting the display as a single-sided display on the second display panel.

An embodiment of the present invention also provides a method for displaying a display, further comprising setting the display to display on one side of the first display panel when the second included angle is less than or equal to a viewing angle.

Based on the above, in the above-mentioned embodiments of the present invention, when the display is applied to single-sided display, the first display panel and the second display panel respectively display an image picture and a black picture, so as to reduce the noise generated by the display panel that does not display an image picture. Light leakage to reduce the impact of light leakage on the user's visual experience.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a schematic structural diagram of a display according to an embodiment of the present invention.

2A and 2B are schematic structural diagrams of a display according to another embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a backlight module according to an embodiment of the invention.

FIG. 4A is a schematic structural diagram of a backlight module according to another embodiment of the present invention.

FIG. 4B is a system diagram of a display according to an embodiment of the invention.

FIG. 5 is a flowchart of a display method of a display according to an embodiment of the invention.

FIG. 6 is a flowchart of a display method of a display according to another embodiment of the present invention.

FIG. 7 is a flow chart of a display method of a display according to yet another embodiment of the present invention.

【Symbol Description】

100, 200, 400: display

110, 210: the first display panel

120, 220: second display panel

130, 230, 330, 430: backlight module

140, 240, 150, 250: Optical film

260: base

261: Reference plane

331: light source

431: The first light source

432: Second light source

433: spacer

461: Display Control Unit

462: Backlight Control Unit

θ1a, θ1b: the first included angle

θ2a, θ2b: the second included angle

Step

Detailed ways

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed descriptions of multiple embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

FIG. 1 is a schematic structural diagram of a display according to an embodiment of the present invention, and FIG. 3 is a schematic structural diagram of a backlight module of this embodiment. 1 and 3, in this embodiment, the display 100 includes a first display panel 110, a second display panel 120, a backlight module 130, a display control unit (not shown), a plurality of optical films 140 and 150 , the second display panel 120 is disposed on the opposite side of the first display panel 110 , that is, the display 100 is a double-sided display. The backlight module 130 is disposed between the first display panel 110 and the second display panel 120 to provide surface light sources required by the first display panel 110 and the second display panel 120 . The optical film 140 is disposed between the first display panel 110 and the backlight module 130 to uniformly provide surface light to the first display panel 110 . The optical film 150 is arranged between the second display panel 120 and the backlight module 130 to uniformly provide the surface light source to the second display panel 120. The optical films 140 and 150 can be a single or a combination of a plurality of diffusion sheets, brightness enhancement sheets, etc. And according to the design requirements of the display 100, the optical film 140 or 150 can include one, part or all of the diffusion sheet and the brightness enhancement sheet, and even the optical film 140 and 150 do not need to be used, which can be set by those skilled in the art , this embodiment is not limited thereto. In this embodiment, the backlight module 130 can be realized by a backlight module 330 , wherein the backlight module 330 includes at least one light source 331 . The light source 331 is used to simultaneously provide the surface light source required for the display of the first display panel 110 and the second display panel 120 , so that the first display panel 110 and the second display panel 120 can display images.

In this embodiment, the display 100 may be provided with a display control unit (not shown), wherein the display control unit may be electrically connected to the first display panel 110 and the second display panel 120 . The display control unit is configured to control the first display panel 110 and the second display panel 120 to display an image frame and a black frame respectively when the display 100 is set to display on one side of the first display panel 110 . For example, when the display 100 is set to display only the first display panel 110, the first display panel 110 is set to display an image picture, and the second display panel 120 is set to display a black picture, so as to reduce the noise of the second display panel 120. Light leakage; when the display 100 is set to display only the second display panel 120, then set the second display panel 120 to display an image picture, and set the first display panel 110 to display a black picture, so as to reduce the noise of the first display panel 110 light leak.

On the other hand, when the display 100 is set to display on both sides, the first display panel 110 and the second display panel 120 can be set to display the same image frame or display different image frames respectively. Wherein, the user can set the display 100 through a control device (such as a remote control or a computer), or the display 100 can be set according to time sequence, but the embodiment of the present invention is not limited thereto.

In an embodiment of the present invention, the backlight module 330 can be a direct type backlight module, that is, the light source 331 of the backlight module 330 can be formed by at least one light emitting element. Alternatively, the backlight module 330 can be an edge-lit backlight module, that is, the light source 331 can be composed of at least one light emitting element and a light guide plate. Wherein, the above-mentioned light-emitting element may be a light-emitting diode or a cold-cathode lamp, but the embodiment of the present invention is not limited thereto.

2A and 2B are schematic structural diagrams of a display according to another embodiment of the present invention. 1, 2A and 2B, in this embodiment, the display 200 is similar to the display 100, but the display 200 also includes a base 260, the base 260 has a reference plane 261 and the base 260 is pivotally connected to the first display panel 210 and The second display panel 220, wherein a display surface of the first display panel 210 and the reference plane 261 of the base 260 have a first included angle θ1a, θ1b, a display surface of the second display panel 220 and the reference plane 261 of the base 260 have a A second included angle θ2a, θ2b. In an embodiment of the present invention, the base 260 may be a component with input functions, such as a base of a notebook computer or a base of an audio-visual player, or a base without functions, such as a base of a flat-screen TV.

In this embodiment, the display 200 can also be set according to the first included angles θ1a, θ1b between the first display panel 210 and the reference plane 261 of the base 260 and the second included angles θ2a, θ2b between the second display panel 220 and the base 260 Certainly. When the first included angle θ1b is less than or equal to a viewing angle θv (θv is, for example, 45 degrees), the display control unit sets the display 200 as a single-sided display on the second display panel 220, and then sets the second display panel 220 to display the video image, The first display panel 210 displays a black picture. In another embodiment of the present invention, when the second included angle θ2b is less than or equal to a viewing angle θv (θv is, for example, 45 degrees), the display control unit sets the display 200 to display on one side of the first display panel 210, and then sets The first display panel 210 displays image images, and the second display panel 220 displays black images. Wherein, the viewing angle θv can be set according to display specifications and user requirements, but the embodiments of the present invention are not limited thereto.

In another embodiment of the present invention, the first included angle θ1a, θ1b or the second included angle θ2a, θ2b can be detected by an electronic device (such as an infrared detection device) or a mechanism device (such as a tenon pressing), and the present invention implements Examples are not limited to this.

In another embodiment of the present invention, the user can set the display 200 through a control device (such as a remote control or a computer), or the display 200 can be set according to time sequence, so that the display 200 is set to single-sided display.

FIG. 4 is a schematic structural diagram of a backlight module according to another embodiment of the present invention. 1 and 4, in this embodiment, the backlight module 130 can be realized by a backlight module 430, wherein the display 100 also includes a backlight control unit (not shown), and the light source includes a first light source 431 and a first Two light sources 432, the first light source 431 is used to provide the surface light source required by the first display panel 110, and the second light source 432 is used to provide the surface light source required by the second display panel 120, wherein the backlight control unit can be electrically connected to the first light source 431 and a second light source 432 . When the display 100 is set to display on one side of the first display panel 110 , the backlight control unit controls the second light source 432 to turn off. In another embodiment of the present invention, when the display 100 is set to display on one side of the second display panel 120 , the backlight control unit controls the first light source 431 to turn off.

To further illustrate, when the display 100 is set to display on one side of the first display panel 110, the backlight control unit controls the second light source 432 to turn off, the first display panel 110 displays an image picture, and the second display panel 120 displays a black picture, so as to further Reduce the possibility of light leakage from the second display panel 120; when the display 100 is set to display on one side of the second display panel 120, the backlight control unit controls the first light source 431 to turn off, the second display panel 120 displays image images, and the first display panel 110 A black image is displayed to further reduce the possibility of light leakage from the first display panel 110 .

In another embodiment of the present invention, the backlight module 430 further includes a spacer 433 . The spacer 433 is disposed between the first light source 431 and the second light source 432 , and the material of the spacer 433 can be a transparent material, such as a glass plate or a film. In another embodiment of the present invention, the spacer 433 can be used as a reflector for the first light source 431 and the second light source 432 to reflect most of the light from the first light source 431 and the second light source 432 to enhance the provided light. surface light source. In another embodiment of the present invention, the spacer 433 can be made of an opaque material, such as a metal plate, because the metal plate needs to be glued or fixed with screws, but light may pass through the gaps in the adhesive or screw holes. light leak. It is also possible that for the convenience of assembly, in terms of structural design, the spacer 433 cannot be completely sealed, and light may leak through the gap.

In another embodiment of the present invention, when the display 100 is set to display on both sides, the first light source 431 is used to provide the surface light source required by the first display panel 110, and the second light source 432 is used to provide the surface light source required by the second display panel 120. A surface light source is required so that both the first display panel 110 and the second display panel 120 can display images.

In one embodiment of the present invention, please refer to FIG. 1, FIG. 2A, FIG. 2B, FIG. 3 and FIG. The backlight module 430 is implemented, and the present invention is not limited thereto.

FIG. 4B is a system diagram of a display according to an embodiment of the invention. Please refer to FIG. 1, FIG. 4A and FIG. 4B. In this embodiment, the display 400 includes a first display panel 110, a second display panel 120, optical films 140, 150, a backlight module 430, a display control unit 461 and a backlight control unit. 462, wherein the same or similar elements use the same or similar reference numerals. The display control unit 461 can be electrically connected to the first display panel 110 and the second display panel 120 , and the backlight control unit 462 can be electrically connected to the first light source 431 and the second light source 432 .

When the display 400 is set to display on one side of the first display panel 110, the display control unit 461 controls the first display panel 110 to display an image picture, the display control unit 461 controls the second display panel 120 to display a black picture, and the backlight control unit 462 controls The second light source 432 is turned off to further reduce the possibility of light leakage from the second display panel 120; The display panel 120 displays image images, the display control unit 461 controls the first display panel 110 to display a black image, and the backlight control unit 462 controls the first light source 431 to be turned off, so as to further reduce the possibility of light leakage from the first display panel 110 .

When the display 400 is set to display on both sides, the display control unit 461 can control the first display panel 110 and the second display panel 120 to display the same or different image frames, and the backlight control unit 462 can control the first light source 431 to turn on to provide The surface light source required by the first display panel 110, and the second light source 432 can be controlled to turn on to provide the surface light source required by the second display panel 120, so that both the first display panel 110 and the second display panel 120 can display images screen.

FIG. 5 is a flowchart of a display method of a display according to an embodiment of the invention. Please refer to FIG. 5 , in this embodiment, the display includes a first display panel, a second display panel and a display control unit, and the display method of the display includes the following steps. The display control unit detects whether the display is set to the single-sided display of the first display panel (step S510). Set the first display panel to display an image frame and the second display panel to display a black frame (step S520). In another embodiment of the present case, when the display is not set to be single-sided display on the first display panel, that is, the judgment result of step S510 is "No", the display control unit detects whether the display is set to single-sided display on the second display panel. side display (step S540), when the display is set to single-sided display on the second display panel, that is, the judgment result of step S540 is "yes", the display control unit sets the second display panel to display an image frame and the first display The panel displays a black screen (step S550). In another embodiment of the present case, the display further includes a first light source and a second light source, the first light source is used to provide the surface light source required by the first display panel, and the second light source is used to provide the surface light source required by the second display panel. The surface light source, the display method of the display further includes further turning off the second light source (step S530 ) when the display is set to display on only one side of the first display panel, so as to reduce light leakage generated by the second display panel. In another embodiment of the present application, when the display is set to display on one side of the second display panel, the first light source may be further turned off (step S560 ), so as to reduce the light leakage generated by the first display panel. In another embodiment of the present case, when the display control unit detects that the display is neither a single-sided display on the first display panel nor a single-sided display on the second display panel, that is, the judgments of steps S510 and S540 are both "No", Then set both the first display panel and the second display panel to display image images for double-sided display (step S570).

FIG. 6 is a flowchart of a display method of a display according to another embodiment of the present invention. Please refer to FIG. 6, in this embodiment, the display further includes a base, a display surface of the first display panel and a reference plane of the base have a first angle, and a display surface of the second display panel has a reference plane with a The second included angle, the display method includes detecting whether the first included angle is less than or equal to a viewing angle (step S610), when the first included angle is less than or equal to a viewing angle, that is, the judgment result of step S610 is "yes", Then set the display as the single-sided display of the second display panel (step S620). In another embodiment of this case, when the first included angle is not less than or equal to a viewing angle, that is, the judgment result of step S610 is "No", then it is detected whether the second included angle is less than or equal to a viewing angle (step S630 ), when the second included angle is less than or equal to a viewing angle, that is, the judgment result of step S630 is "Yes", then the display is set to display on one side of the first display panel (step S640). In another embodiment of this case, when the first included angle is not less than or equal to a viewing angle, and the second included angle is not less than or equal to a viewing angle, that is, the judgments of steps S610 and S630 are both "No", Then set both the first display panel and the second display panel to display image frames for double-sided display (step S650 ).

FIG. 7 is a flow chart of a display method of a display according to yet another embodiment of the present invention. Please refer to FIG. 7, in this embodiment, the display method includes detecting whether the first included angle is less than or equal to a viewing angle (step S710), when the first included angle is less than or equal to a viewing angle, that is, the judgment of step S710 If the result is "yes", then the display is set to display on one side of the second display panel (step S720). When the display is set to display on one side of the second display panel, the second display panel displays a video image and the first display panel displays a black image (step S730), and the first light source can be further turned off (step S740), so as to reduce the Light leakage generated by the first display panel. In another embodiment of this case, when the first included angle is not less than or equal to a viewing angle, that is, the judgment result of step S710 is "No", then it is detected whether the second included angle is less than or equal to a viewing angle (step S750 ), when the second included angle is less than or equal to a viewing angle, that is, the judgment result of step S750 is "yes", then the display is set to display on one side of the first display panel (step S760), when the display is set to the first display panel When a display panel is displayed on one side, the first display panel displays an image image and the second display panel displays a black image (step S770), and the second light source can be further turned off (step S780), so as to reduce the output generated by the second display panel. of light leaks. In another embodiment of this case, when the first included angle is not less than or equal to a viewing angle, and the second included angle is not less than or equal to a viewing angle, that is, the judgments of steps S710 and S750 are both "No", Then set both the first display panel and the second display panel to display image frames for double-sided display (step S790 ).

Wherein, the sequence of each step in the embodiment of FIG. 5 to FIG. 7 is for illustration, and the embodiment of the present invention is not limited thereto. Moreover, the details of each step in the embodiments of FIG. 5 to FIG. 7 can refer to the embodiments in FIG. 1 , FIG. 2A , FIG. 2B , FIG. 3 , FIG. 4A and FIG. 4B , and will not be repeated here.

In summary, the display and its display method described in the embodiments of the present invention, when the display is applied to single-sided display, the first display panel and the second display panel respectively display an image picture and a black picture, so as to reduce light leakage on the non-display surface possible to reduce the impact of light leakage on the user's visual experience. Moreover, when the display is used for single-sided display, one of the first light source or the second light source corresponding to the first display panel or the second display panel displaying a black picture is turned off, so as to further reduce the possibility of light leakage. Furthermore, the display can be set as single-sided display or double-sided display according to the included angles between the first display panel and the second display panel and the reference plane of the base.

The above is only a preferred embodiment of the present invention, and cannot limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the description of the invention still belong to the patent of the present invention. range of coverage. In addition, any embodiment or claims of the present invention need not achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and the title of the invention are only used to assist in the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, "first", "second" and the like mentioned in the specification or claims are only used to name elements or to distinguish different embodiments or ranges, and are not used to limit the upper limit or limit on the number of elements. lower limit.

Claims (16)

1. A display comprising a first display panel, a second display panel, a backlight module and a display control unit, The second display panel is disposed on an opposite side of the first display panel, The backlight module is arranged between the first display panel and the second display panel, the backlight module has at least one light source and the backlight module is used to provide the first display panel and the second display The surface light source required for the panel, Wherein, the display control unit controls the first display panel to display an image image and controls the second display panel to display a black image when the display is set to display on one side of the first display panel. 2. The display according to claim 1, wherein the display control unit controls the second display panel to display an image and controls the second display panel to display an image when the display is set to display on one side of the second display panel. A display panel displays a black picture. 3. The display according to claim 2, further comprising a base, said base has a reference plane and said base is pivotally connected to said first display panel and said second display panel, wherein said first A display surface of a display panel has a first included angle with the reference plane of the base, a display surface of the second display panel has a second included angle with the reference plane of the base, when When the first included angle is less than or equal to a viewing angle, the display control unit sets the display as a single-sided display on the second display panel. 4 . The display according to claim 3 , wherein when the second included angle is less than or equal to a viewing angle, the display control unit sets the display as a single-sided display of the first display panel. 5. The display according to claim 4, further comprising a backlight control unit, wherein the light source comprises a first light source and a second light source, the first light source is used to provide the required A surface light source, the second light source is used to provide the surface light source required by the second display panel, and when the display is set to display on one side of the first display panel, the backlight control unit controls the second The light source is turned off. 6. The display according to claim 5, when the display is set to display on one side of the second display panel, the backlight control unit controls the first light source to turn off. 7. The display as claimed in claim 5, wherein the backlight module further comprises a spacer disposed between the first light source and the second light source. 8. The display according to claim 2, further comprising a backlight control unit, wherein the light source comprises a first light source and a second light source, the first light source is used to provide the required A surface light source, the second light source is used to provide the surface light source required by the second display panel, and when the display is set to display on one side of the first display panel, the backlight control unit controls the second The light source is turned off. 9. A display method of a display, the display comprising a first display panel, a second display panel and a display control unit, the display method comprising: A display control unit detects whether the display is set to display on one side of the first display panel; and When the display is set to display on one side of the first display panel, the display control unit sets the first display panel to display an image frame and the second display panel to display a black frame. 10. The display method of a display according to claim 9, further comprising: when the display is set to display on one side of the second display panel, the display control unit sets the second display panel to display an image frame and The first display panel displays a black picture. 11. The display method of a display according to claim 10, wherein the display further comprises a first light source and a second light source, the first light source is used to provide the surface light source required by the first display panel, The second light source is used to provide the surface light source required by the second display panel, and the display method further includes: When the display is set to display on one side of the first display panel, the second light source is turned off. 12. The display method of the display device according to claim 11, further comprising: When the display is set to display on one side of the second display panel, the first light source is turned off. 13. The display method of a display according to claim 12, wherein the display further comprises a base, a display surface of the first display panel and a reference plane of the base have a first angle, the A display surface of the second display panel has a second angle with the reference plane, and the display method further includes: When the first included angle is less than or equal to a viewing angle, the display is set to display on one side of the second display panel. 14. The display method of the display device according to claim 13, further comprising: When the second included angle is less than or equal to a viewing angle, the display is set to display on one side of the first display panel. 15. The display method of a display according to claim 10, wherein the display further comprises a base, a display surface of the first display panel and a reference plane of the base have a first angle, the A display surface of the second display panel has a second angle with the reference plane, and the display method further includes: When the first included angle is less than or equal to a viewing angle, the display is set to display on one side of the second display panel. 16. The display method of the display device according to claim 15, further comprising: When the second included angle is less than or equal to a viewing angle, the display is set to display on one side of the first display panel.