TW201508726A - Display and displaying method thereof - Google Patents

Abstract

A display device and a displaying method thereof are provided. The display device includes a first display panel and a second display panel. The displaying method includes the following steps. Whether the display is set to single-sided display is detected. When the display device is set to single-sided display, the first display panel and the second display panel are set to respectively display a image frame and a black frame.

Description

Display and display method thereof

The present invention relates to a display and a display method thereof, and more particularly to a double-sided display and a display method thereof.

The flat display is the communication interface between people and information, so its development is particularly important. Among various types of flat panel displays, liquid crystal displays (LCDs) have superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference, so liquid crystal displays are popular among consumers.

With the advancement of display technology, the application field of liquid crystal displays is very wide. Among them, the liquid crystal display having the double-sided display function can be applied to a portable consumer electronic device or as a large-sized liquid crystal display television for public viewing. In general, two liquid crystal display panels can be used to complete the production of a double-sided display liquid crystal display for the purpose of double-sided display. However, when the liquid crystal display of the double-sided display is applied to the one-sided display, the display panel in the display may affect the display panel that is not displayed to cause light leakage, thus affecting the user's visual experience.

Chinese Patent No. 1280032 discloses a display device having a pair of liquid crystal cells and a backlight. The backlight is disposed on the back side of the liquid crystal cell, and a reflective polarizing plate is disposed between each liquid crystal cell and the backlight. Observation side and back side configuration absorption The polarizing plate converts the direction of the polarization axis by switching the voltage of the liquid crystal cell, and controls the polarization direction of the viewing side of the display device by controlling the polarization directions of the polarization axis, the reflective polarizing plate and the absorbing polarizing plate.

Taiwan Patent No. M286382 discloses a double-sided display liquid crystal display. The double-sided display liquid crystal display comprises 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 reflective sheets are disposed between the two light guide plates.

Taiwan Patent No. I232281 discloses a double-sided liquid crystal display comprising 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 source is located on the third surface of the light guide plate, and the light is incident on the light guide plate by the end face illumination mode, and the light source may 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 reverse image display function. The common backlight module is disposed between the first display panel module and the second display panel module to provide a common light source required for displaying images, and the first and second display panels are liquid crystal display panels.

The 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 influence of light leakage on the user's visual experience.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

An embodiment of the present invention provides a display including a first display panel and a second display panel disposed on the first or all of the above or other objectives. a backlight module disposed between the first display panel and the second display panel, the backlight module having at least one light source and the backlight module for providing the first display panel and the second display panel And a display control unit, wherein the display control unit controls the first display panel to display an image screen and controls the second display panel to display a black screen when the display is set to display the first display panel on one side.

In an embodiment of the invention, the display control unit controls the second display panel to display an image frame and controls the first display panel to display a black screen when the display is set to be displayed on the single 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 angle, a display surface of the second display panel and the reference plane of the base have a second angle. When the first angle is less than or equal to a viewing angle, the display control unit sets the display to be a single-sided display of the second display panel.

In an embodiment of the invention, when the second angle is less than or equal to a viewing angle, the display control unit sets the display to be a single-sided display of the first display panel.

In an embodiment of the invention, a backlight control unit is further included, wherein the light source comprises a first light source and a second light source, wherein the first light source is used to provide a surface light source required by the first display panel, and the second light source is used for The surface light source required for the second display panel is provided, and when the display is set to be single-sided display of the first display panel, the backlight control unit controls the second light source to be turned off.

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

In an embodiment of the invention, the backlight module further includes a spacer, and the configuration Between the first light source and the second light source.

In an embodiment of the invention, a backlight control unit is further included, wherein the light source comprises a first light source and a second light source, wherein the first light source is used to provide a surface light source required by the first display panel, and the second light source is used for The surface light source required for the second display panel is provided, and when the display is set to be single-sided display of the first display panel, the backlight control unit controls the second light source to be turned off.

One embodiment of the present invention also provides a display method for a display. The display includes a first display panel, a second display panel, and a display control unit. The method includes a display control unit detecting whether the display is set to be a single-sided display of the first display panel; and when the display is set to be single-sided display of the first display panel, the display control unit sets the first display panel to display an image screen and the second display The panel displays a black screen.

An embodiment of the present invention also provides a display method for a display. When the display is set to display on the single 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 screen.

An embodiment of the present invention also provides a display method for a display. The display further includes a first light source and a second light source. The first light source is used to provide a surface light source required by the first display panel, and the second light source is used to provide the first light source. The surface light source required by the second display panel, the display method further comprises: when the indicator is set to be displayed on the single side of the first display panel, the second light source is turned off.

An embodiment of the present invention also provides a display method of a display, which is turned off when the display is set to display on the single side of the second display panel.

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

An embodiment of the present invention also provides a display method for a display. When the second angle is less than or equal to a viewing angle, the display is set to be a single-sided display of the first display panel.

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

An embodiment of the present invention also provides a display method for a display, which further includes setting the display to be a single-sided display of the first display panel when the second angle is less than or equal to a viewing angle.

Based on the above, in the above embodiment of the present invention, when the display is applied to the single-sided display, the first display panel and the second display panel respectively display the image frame and the black screen to reduce the display panel of the non-display image frame. Light leakage to reduce the light leakage affects the user's visual experience.

The above described features and advantages of the invention will be apparent from the following description.

100, 200, 400‧‧‧ display

110, 210‧‧‧ 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‧‧‧First light source

432‧‧‧second light source

433‧‧‧ spacers

461‧‧‧Display Control Unit

462‧‧‧Backlight control unit

Θ1a, θ1b‧‧‧ first angle

Θ2a, θ2b‧‧‧ second angle

S510, S520, S530, S540, S550, S560, S570, S610, S620, S630, S640, S650, S710, S720, S730, S740, S750, S760, S770, S780, S790‧‧ steps

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

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

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

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

4B is a schematic diagram of a system of a display in accordance with an embodiment of the present invention.

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

6 is a flow chart of a display method of a display according to another embodiment of the present invention.

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

The foregoing and other objects, features, and advantages of the invention will be apparent from the Detailed Description The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only directions referring to the additional schema. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

1 is a schematic structural view of a display according to an embodiment of the present invention, and FIG. 3 is a schematic structural view of a backlight module according to the embodiment. Referring to FIG. 1 and FIG. 3 , in the 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), and a plurality of optical films 140 . 150. The second display panel 120 is disposed on an 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 a surface light source 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 the surface light source to the first display panel 110 . The optical film 150 is disposed 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 may be a combination of a single or a plurality of diffusion sheets, a brightness enhancement sheet, and the like. And depending on the design requirements of the display 100, the optical film 140 or 150 may include one, some or all of the diffusion sheet, the brightness enhancement sheet, or even the optical films 140 and 150, which may be used by those skilled in the art. The setting is not limited to this embodiment. In this embodiment, the backlight module 130 can be implemented by the backlight module 330. The backlight module 330 includes at least one light source 331. The light source 331 is configured to simultaneously provide the surface light sources required for the first display panel 110 and the second display panel 120 to display, so that the first display panel 110 and the second display panel 120 can display the image screen.

In the embodiment, the display 100 can be provided with a display control unit (not shown), wherein the display control unit can electrically connect the first display panel 110 and the second display panel 120. The display control unit controls the first display panel 110 and the second display panel 120 to display an image screen and a black screen, respectively, when the display 100 is set to be displayed on the single side of the first display panel 110. For example, when the display 100 is set to display only by the first display panel 110, the first display panel 110 is set to display an image screen, and the second display panel 120 is configured to display a black screen to reduce light leakage of the second display panel 120; When the display 100 is set to display only the second display panel 120, the second display panel 120 is set to display an image screen, and the first display panel 110 is set to display a black screen to reduce light leakage of the first display panel 110.

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 screen or display different image frames. The user can set the display 100 through a control device (for example, a remote controller or a computer), or the display 100 can be set according to the time series, but the embodiment of the present invention is not limited thereto.

In an embodiment of the invention, the backlight module 330 can be a direct-lit 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. The light-emitting element may be a light-emitting diode or a cold-cathode lamp, but the embodiment of the invention is not limited thereto.

2A and 2B are schematic diagrams showing the structure of a display according to another embodiment of the present invention. Referring to FIG. 1 , FIG. 2A and FIG. 2B , in the embodiment, the display 200 is similar to the display 100 , but the display 200 further 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 . The second display panel 220 has a display surface 261 of the first display panel 210 and a reference plane 261 of the base 260 having a first angle θ1a, θ1b. A display surface of the second display panel 220 has a reference plane 261 with the base 260. The second angle θ2a, θ2b. In an embodiment of the invention, the base 260 may be a component having an input function, such as a base of a notebook computer or a base of an audio-visual playback device, or a non-functional base such as a base of a flat-panel television.

In the embodiment, the display 200 can be set according to the first angle θ1a, θ1b of the first display panel 210 and the reference plane 261 of the base 260 and the second angle θ2a, θ2b of the second display panel 220 and the base 260. When the first angle θ1b is less than or equal to a viewing angle θv (θv, for example, 45 degrees), the display control unit sets the display 200 to display the second display panel 220 on one side, and further sets the second display panel 220 to display the image screen, the first display panel. 210 displays a black screen. In another embodiment of the present invention, when the second angle θ2b is less than or equal to a viewing angle θv (θv, for example, 45 degrees), the display control unit sets the display 200 to display the first display panel 210 on one side, thereby setting the first display panel. 210 displays an image screen, and the second display panel 220 displays Show black screen. The viewing angle θv can be set according to the display specifications and the user's requirements, but the embodiment of the present invention is not limited thereto.

In another embodiment of the present invention, the first angle θ1a, θ1b or the second angle θ2a, θ2b can be detected by an electronic device (such as an infrared detecting device) or a mechanism device (such as a card pressing), and the present invention is implemented. The example is 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 controller or a computer), or the display 200 can be set according to the timing to set the display 200 to be set to a single-sided display.

4 is a schematic structural view of a backlight module according to another embodiment of the present invention. Referring to FIG. 1 and FIG. 4 , in the embodiment, the backlight module 130 can be implemented by the backlight module 430 , wherein the display 100 further includes a backlight control unit (not shown), and the light source includes a first light source 431 and A second light source 432 is configured to provide a surface light source required by the first display panel 110. The second light source 432 is configured to provide a surface light source required by the second display panel 120. The backlight control unit is electrically connected. The first light source 431 and the second light source 432. When the display 100 is set to be displayed on one side of the first display panel 110, the backlight control unit controls the second light source 432 to be turned off. In another embodiment of the present invention, when the display 100 is set to be displayed on one side of the second display panel 120, the backlight control unit controls the first light source 431 to be turned off.

Further, when the display 100 is set to be displayed on the single side of the first display panel 110, the backlight control unit controls the second light source 432 to be turned off, the first display panel 110 displays an image screen, and the second display panel 120 displays a black screen to further reduce When the display 100 is set to be displayed on the single side of the second display panel 120, the backlight control unit controls the first light source 431 to be turned off, and the second display panel 120 displays the image image, the first display The display panel 110 displays a black screen to further reduce the possibility of light leakage of 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 may be a light transmissive material such as a glass plate or a film. In another embodiment of the present invention, the spacer 433 can serve as a reflective sheet of 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 Surface light source. In another embodiment of the present invention, the spacer 433 may be an opaque material, such as a metal plate, because the metal plate needs to be adhered or fixed by a screw, but the light may leak from the gap of the adhesive or the screw hole. It may also be convenient to assemble, and in the structural design, the spacer 433 cannot be completely adhered, and light may leak light from 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 a surface light source required by the first display panel 110, and the second light source 432 is used to provide the second display panel 120. The surface light source is required such that the first display panel 110 and the second display panel 120 can display an image screen.

In an embodiment of the present invention, referring to FIG. 1 , FIG. 2A , FIG. 2B , FIG. 3 and FIG. 4A , the backlight module 130 of the display 100 and the backlight module 230 of the display 200 can be selected as a backlight module according to the design requirements. The group 330 or the backlight module 430 is implemented, and the invention is not limited thereto.

4B is a schematic diagram of a system of a display in accordance with an embodiment of the present invention. Referring to FIG. 1 , FIG. 4A and FIG. 4B , in the embodiment, the display 400 includes a first display panel 110 , a second display panel 120 , an optical film 140 , 150 , a backlight module 430 , a display control unit 461 , and a backlight control Unit 462, wherein the same or similar elements are given the same or similar reference numerals. The display control unit 461 can electrically connect the first display panel 110 and the second display panel 120, and the backlight control sheet The element 462 can electrically connect the first light source 431 and the second light source 432.

When the display 400 is set to be displayed on the single side of the first display panel 110, the display control unit 461 controls the first display panel 110 to display an image screen, the display control unit 461 controls the second display panel 120 to display a black screen, and the backlight control unit 462 controls the first The two light sources 432 are turned off to further reduce the possibility of light leakage of the second display panel 120. When the display 400 is set to display the second display panel 120 on one side, the second display panel 120 displays an image screen, and the display control unit 461 controls the second display panel. 120 displays an image screen, the display control unit 461 controls the first display panel 110 to display a black screen, and the backlight control unit 462 controls the first light source 431 to be turned off to further reduce the possibility of light leakage of 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 be turned on to provide the first a surface light source required for the display panel 110, and a surface light source required to control the second light source 432 to provide the second display panel 120, so that the first display panel 110 and the second display panel 120 can display an image frame. .

FIG. 5 is a flow chart of a display method of a display according to an embodiment of the invention. Referring to FIG. 5, in the embodiment, the display comprises a first display panel, a second display panel and a display control unit, and the display method of the display comprises the following steps. The display control unit detects whether the display is set to be single-sided display of the first display panel (step S510), and when the display is set to be single-sided display of the first display panel, that is, the determination result of step S510 is “Yes”, the display control unit sets The first display panel displays an image screen and the second display panel displays a black screen (step S520). In another embodiment of the present invention, when the display setting is not displayed on the single side of the first display panel, that is, the determination result in step S510 is “NO”, the display control unit detects whether the display is Set to the second display panel one-sided display (step S540), when the display is set to the second display panel single-sided display, that is, the determination result of step S540 is YES, the display control unit sets the second display panel to display an image. The screen and the first display panel display a black screen (step S550). In another embodiment of the present invention, the display further includes a first light source for providing a surface light source required by the first display panel, and a second light source for providing a second display panel The surface light source and the display method of the display further comprise: when the display is set to be single-sided display of the first display panel, the second light source may be further turned off (step S530) to reduce light leakage generated by the second display panel. In another embodiment of the present invention, when the display is set to be displayed on the single side of the second display panel, the first light source may be further turned off (step S560) to reduce light leakage generated by the first display panel. In another embodiment of the present invention, when the display control unit detects that the display is not displayed on the single side of the first display panel, and is not displayed on the single side of the second display panel, the determinations in steps S510 and S540 are all “No”. And setting the first display panel and the second display panel to display the image screen for double-sided display (step S570).

6 is a flow chart of a display method of a display according to another embodiment of the present invention. Referring to FIG. 6 , in the embodiment, the display further includes a base. A display surface of the first display panel has a first angle with a reference plane of the base, and the second display panel has a first display surface and a reference plane. The display method includes: detecting whether the first angle is less than or equal to a viewing angle (step S610), and when the first angle is less than or equal to a viewing angle, that is, the determination result of step S610 is “Yes”, setting the display to be the first The two display panels are displayed on one side (step S620). In another embodiment of the present invention, when the first angle is not less than or equal to a viewing angle, that is, the determination result of step S610 is “NO”, it is detected whether the second angle is less than or equal to a viewing angle (step S630). When the second 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 be displayed on one side of the first display panel (step S640). In another embodiment of the present invention, when the first angle is not less than or equal to a viewing angle, and the second angle is not less than or equal to a viewing angle, that is, the determinations of steps S610 and S630 are all “No”, then the first setting is performed. Both the display panel and the second display panel display an image screen for double-sided display (step S650).

FIG. 7 is a flow chart showing a display method of a display according to still another embodiment of the present invention. Referring to FIG. 7, in the embodiment, the display method includes: detecting whether the first angle is less than or equal to a viewing angle (step S710), and when the first angle is less than or equal to a viewing angle, that is, the determining result of step S710 is “ Yes, the display is set to display on the single side of the second display panel (step S720). When the display is set to be displayed on the single side of the second display panel, the second display panel displays an image screen and the first display panel displays a black screen (step S730), and the first light source can be further turned off (step S740) to reduce the number A light leakage generated by a display panel. In another embodiment of the present invention, when the first angle is not less than or equal to a viewing angle, that is, the determination result of step S710 is “NO”, it is detected whether the second angle is less than or equal to a viewing angle (step S750). When the second angle is less than or equal to a viewing angle, that is, the determination result of step S750 is YES, the display is set to be single-sided display of the first display panel (step S760), when the display is set to be displayed on the single side of the first display panel. The first display panel displays an image screen and the second display panel displays a black screen (step S770), and the second light source can be further turned off (step S780) to reduce light leakage generated by the second display panel. In another embodiment of the present invention, when the first angle is not less than or equal to a viewing angle, and the second angle is not less than or equal to a viewing angle, that is, the determinations of steps S710 and S750 are all “No”, then the first setting is performed. Both the display panel and the second display panel display an image screen for double-sided display (step S790).

The sequence of the steps in the embodiment of FIG. 5 to FIG. 7 is used for explanation, and the present invention The embodiment is not limited thereto. The details of the steps in the embodiment of FIG. 5 to FIG. 7 can be referred to the embodiment of FIG. 1, FIG. 2A, FIG. 2B, FIG. 3, FIG. 4A and FIG. 4B, and details are not described herein again.

In summary, the display and the display method thereof according to the embodiments of the present invention, when the display is applied to the single-sided display, the first display panel and the second display panel respectively display the image frame and the black screen to reduce the leakage of the non-display surface It is possible to reduce the impact of light leakage on the user's visual experience. Moreover, when the display is applied to the one-sided display, one of the first light source or the second light source corresponding to the first display panel or the second display panel that displays the black screen is turned off to further reduce the possibility of light leakage. Moreover, the display can set the display to be single-sided display or double-sided display according to the angle between the first display panel and the second display panel and the reference plane of the base.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second" and the like mentioned in the specification or the scope of the claims are only used to name the elements or distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.

S510, S520, S530, S540, S550, S560, S570‧‧ steps

Claims (16)

A display device includes: a first display panel; a second display panel disposed on an opposite side of the first display panel; a backlight module disposed between the first display panel and the second display panel, The backlight module has at least one light source and the backlight module is configured to provide a surface light source required for the first display panel and the second display panel; and a display control unit, wherein the display control unit is configured to be When the first display panel is displayed on one side, the first display panel is controlled to display an image screen and the second display panel is controlled to display a black screen. The display device of claim 1, wherein the display control unit controls the second display panel to display an image screen and control the first display panel display when the display is set to be displayed on the single side of the second display panel. A black picture. The display device of claim 2, further comprising a base, the base having a reference plane and the base pivotally connected to the first display panel and the second display panel, wherein the first display panel The display surface has a first angle with the reference plane of the base, and a display surface of the second display panel has a second angle with the reference plane of the base. When the first angle is less than or equal to a viewing angle, the The display control unit sets the display to be displayed on one side of the second display panel. The display of claim 3, wherein the display control unit sets the display to be a single-sided display of the first display panel when the second angle is less than or equal to a viewing angle. The display of claim 4, further comprising a backlight control unit The light source includes a first light source for providing a surface light source required by the first display panel, and a second light source for providing a surface light source required for the second display panel. And when the display is set to be single-sided display of the first display panel, the backlight control unit controls the second light source to be turned off. The display device of claim 5, wherein the backlight control unit controls the first light source to be turned off when the display is set to display on the single side of the second display panel. The display device of claim 5, wherein the backlight module further comprises a spacer disposed between the first light source and the second light source. The display device of claim 2, further comprising a backlight control unit, wherein the light source comprises a first light source and a second light source, wherein the first light source is used to provide a surface light source required by the first display panel The second light source is configured to provide a surface light source required by the second display panel, and when the display is set to be displayed on the single side of the first display panel, the backlight control unit controls the second light source to be turned off. A display method for a display, 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 be a single-sided display of the first display panel; And when the display is set to display on the single 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 screen. The display method of the display device of claim 9 further includes: when the display is set to be displayed on the single 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 A black screen is displayed. The display method of the display device of claim 10, wherein the display further comprises a first light source and a second light source, wherein the first light source is used to provide a surface light source required by the first display panel, The two light sources are used to provide the surface light source required for the second display panel. The display method further includes: turning off the second light source when the display is set to be displayed on the single side of the first display panel. The display method of the display of claim 11, further comprising: turning off the first light source when the display is set to display on the single side of the second display panel. The display method of the display device of claim 12, wherein the display further comprises a base, a display surface of the first display panel has a first angle with a reference plane of the base, and the second display panel The display surface has a second angle with the reference plane. The display method further includes: setting the display to be a single-sided display of the second display panel when the first angle is less than or equal to a viewing angle. The display method of the display of claim 13 further includes: when the second angle is less than or equal to a viewing angle, setting the display to be a single-sided display of the first display panel. The display method of the display of claim 10, wherein the display further comprises a base, a display surface of the first display panel has a first angle with a reference plane of the base, and the second display panel The display method further includes: when the first angle is less than or equal to a viewing angle, the display is set to be a single-sided display of the second display panel. The display method of the display of claim 15, further comprising: setting the display to be a single-sided display of the first display panel when the second angle is less than or equal to a viewing angle.