Composite display device and control method thereof

Abstract

To provide a composite display device.SOLUTION: A composite display device comprises: a composite display that includes a first display panel and a second display panel provided in an aligned state; a brightness acquisition module that is connected to the composite display and acquires an ambient brightness around the composite display; a screen management module that is connected to the brightness acquisition module and generates a first screen setting signal and a second screen setting signal according to the ambient brightness; and a panel controlling module that is connected to the screen management module and the composite display, and respectively controls the first display panel and the second display panel to display a first screen and a second screen on the basis of the first screen setting signal and the second screen setting signal to form a composite screen. This configuration can achieve optimization of the screens and the effective energy saving.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a display device and a control method thereof, and more particularly to a composite display device and a control method thereof. [Background technology]

[0002] With the current development of science and technology and market demand, outdoor displays can be viewed anywhere outdoors, but the screen resolution of outdoor displays illuminated by sunlight still has room for improvement. The existing solution is to counter the bright ambient light by increasing the screen brightness, but this not only increases power consumption but also increases heat energy, shortening the service life of outdoor displays.

[0003] Cholesteric liquid crystal displays (ChLCDs) have the advantage of being able to control the panel's reflectivity to reflect ambient light, providing a planar mode, while also allowing light from behind to pass through in a focal conic mode. These two modes can be maintained without consuming power, resulting in what's known as a bistable mode. When an active emissive display (AEM) is placed behind the cholesteric liquid crystal display (ChLCD), a novel display can be created. When ambient light is sufficient, the cholesteric liquid crystal display (CEM) acts as the primary display source, while in dark environments, the active emissive display (AEM) acts as the primary display source. This achieves energy savings, but fails to address the bottlenecks that arise when the two displays are used simultaneously. For example, due to the stacked structure of these two displays, the transmittance of the front display significantly affects the luminous intensity of the rear display, resulting in uneven color across the entire screen and negatively impacting the user's viewing experience. In view of this, how to adjust the screen to maintain the color uniformity of the existing screen is currently a problem that people in the related industry are trying to solve as soon as possible. Summary of the Invention [Means for solving the problem]

[0004] The purpose of the present disclosure is to provide a composite display device and a control method thereof, which uses the ambient brightness around the composite display as a criterion for determining whether the first display panel at the front or the second display panel at the rear will display the screen, and determines a second screen setting signal for controlling the light-emitting intensity of the second display panel based on a first screen setting signal for controlling the first display panel to switch to different gradations, thereby achieving uniformity in the color of the screen, and driving the first display panel and the second display panel to display different screens respectively through cooperation between a screen management module and a panel control module, thereby indirectly extending the service life of the composite display and reducing maintenance costs.

[0005] According to an embodiment of the present disclosure, there is provided a composite display including a first display panel and a second display panel aligned with the first display panel; a brightness acquisition module connected to the composite display and configured to acquire an environmental brightness around the composite display; a screen management module connected to the brightness acquisition module and configured to generate a first screen setting signal corresponding to the first display panel based on the environmental brightness and to generate a second screen setting signal corresponding to the second display panel based on the first screen setting signal; and a display management module connected to the screen management module and the composite display and configured to cause the first display panel to display a first screen based on the first screen setting signal. display and the second display panel displays the second screen based on the second screen setting signal. display and a panel control module for controlling the first screen and the second screen to overlap to form a composite screen.

[0006] As another example of the above embodiment, the luminance acquisition module includes a sensing sub-module for sensing the surroundings of the composite display to generate an ambient luminance.

[0007] As another example of the above embodiment, the luminance acquisition module includes a remote sub-module signally connected to a cloud server, for acquiring ambient luminance from the cloud server based on position information of the composite display.

[0008] In another example of the above embodiment, the screen management module determines whether the environmental brightness is greater than the reference brightness to generate a brightness determination result; if the brightness determination result is YES, the panel control module controls the first display panel to operate in a reflective mode according to the first screen setting signal, and controls the second display panel to operate in a reflective mode according to the second screen setting signal. Turn off the power If the brightness determination result is NO, the panel control module controls the first display panel to operate in a transmissive mode according to the first screen setting signal, and controls the second display panel to operate in a transparent mode according to the second screen setting signal. Turn on the Control it as follows.

[0009] As another example of the above embodiment, the first screen setting signal includes transmission frequency spectrum data, and the screen management module captures a first transmittance section, a second transmittance section, and a third transmittance section corresponding to a red spectrum, a green spectrum, and a blue spectrum, respectively, from the transmission frequency spectrum data, and adjusts a first intensity parameter, a second intensity parameter, and a third intensity parameter corresponding to the red spectrum, the green spectrum, and the blue spectrum in the second screen setting signal according to the first transmittance section, the second transmittance section, and the third transmittance section.

[0010] In another embodiment of the above-mentioned embodiment, the screen management module acquires screen content data and divides it into static screen data and dynamic screen data, and the screen management module matches the static screen data with the first screen setting signal and displays the first screen setting signal through the first display panel. display The first screen is displayed on the static screen, and the screen management module adjusts the dynamic screen data to the second screen setting signal, and displays the first screen on the static screen. display The second screen is displayed on a dynamic screen different from the static screen.

[0011] In another embodiment of the above-mentioned embodiment, the screen management module acquires the screen content data and divides it into a first depth of field screen data and a second depth of field screen data, and the screen management module matches the first depth of field screen data with a first screen setting signal, and displays the first depth of field screen data by the first display panel. display The first screen is displayed on the first depth of field screen, and the screen management module matches the second depth of field screen data with the second screen setting signal, and displays the second screen on the second display panel. display The second screen thus obtained is displayed on a second depth of field screen that is different from the first depth of field screen.

[0012] As another example of the above embodiment, the combined display further includes an adhesive layer disposed between the first display panel and the second display panel.

[0013] As another example of the above embodiment, the first display panel has a first visible area for displaying a first screen, and the second display panel has a second visible area for displaying a second screen, the first visible area at least partially overlaps with the second visible area to form an overlapping area, and the area of ​​the overlapping area occupies more than 80% of the area of ​​the first display panel.

[0014] As another example of the above embodiment, the first display panel is a cholesteric liquid crystal display panel.

[0015] In another example of the above embodiment, the second display panel is a submillimeter light emitting diode (mini LED) display panel, a micro light emitting diode (micro LED) display panel, an organic light emitting diode (OLED) display panel, or a perovskite light emitting diode (PeLED) display panel.

[0016] According to another embodiment of the present disclosure, there is provided a method for controlling a display device, the method comprising: acquiring an environmental brightness around a composite display including a first display panel and a second display panel by a brightness acquisition module; generating a first screen setting signal corresponding to the first display panel based on the environmental brightness by a screen management module; and generating a second screen setting signal corresponding to the second display panel based on the first screen setting signal by a panel control module; display and the second display panel displays the second screen based on the second screen setting signal. display and a step of controlling the first screen and the second screen to overlap to form a composite screen.

[0017] As another example of the above embodiment, the luminance acquisition module includes a sensing sub-module for sensing the surroundings of the composite display to generate an ambient luminance.

[0018] As another example of the above embodiment, the luminance acquisition module includes a remote sub-module signally connected to a cloud server, for acquiring ambient luminance from the cloud server based on position information of the composite display.

[0019] As another example of the above embodiment, the step of generating a first screen setting signal corresponding to the first display panel based on the environmental luminance by the screen management module and generating a second screen setting signal corresponding to the second display panel based on the first screen setting signal further includes the step of determining whether the environmental luminance is greater than a reference luminance by the screen management module to generate a luminance determination result, and if the luminance determination result is YES, the panel control module controls the first display panel to be operated in a reflective mode based on the first screen setting signal and controls the second display panel to be operated in a reflective mode based on the second screen setting signal. Turn off the power If the brightness determination result is NO, the panel control module controls the first display panel to operate in a transmissive mode according to the first screen setting signal, and controls the second display panel to operate in a transparent mode according to the second screen setting signal. Turn on the Control it as follows.

[0020] As another example of the above embodiment, the first screen setting signal includes transmittance frequency spectrum data, and the steps of generating a first screen setting signal corresponding to the first display panel based on the ambient brightness by a screen management module and generating a second screen setting signal corresponding to the second display panel based on the first screen setting signal further include capturing, by the screen management module, a first transmittance section, a second transmittance section, and a third transmittance section corresponding to the red spectrum, the green spectrum, and the blue spectrum, respectively, from the transmittance frequency spectrum data, and adjusting a first intensity parameter, a second intensity parameter, and a third intensity parameter corresponding to the red spectrum, the green spectrum, and the blue spectrum in the second screen setting signal based on the first transmittance section, the second transmittance section, and the third transmittance section.

[0021] In another example of the above embodiment, the step of generating a first screen setting signal corresponding to a first display panel based on the ambient brightness by a screen management module and generating a second screen setting signal corresponding to a second display panel based on the first screen setting signal may include the steps of obtaining screen content data by a screen management module and dividing it into static screen data and dynamic screen data, and aligning the static screen data with the first screen setting signal by the screen management module and generating a second screen setting signal corresponding to a second display panel based on the first screen setting signal. display a step of displaying the first screen on a static screen by a screen management module, aligning the dynamic screen data with a second screen setting signal, and displaying the first screen on a static screen by a second display panel; display and displaying the second screen on a dynamic screen different from the static screen.

[0022] As another example of the above embodiment, the step of generating a first screen setting signal corresponding to a first display panel based on the ambient brightness by a screen management module and generating a second screen setting signal corresponding to a second display panel based on the first screen setting signal may include the steps of obtaining screen content data by a screen management module and dividing it into first depth-of-field screen data and second depth-of-field screen data, and aligning the first depth-of-field screen data with the first screen setting signal by the screen management module and generating a second screen setting signal corresponding to a second display panel based on the first screen setting signal. display a step of displaying the first screen on a first depth of field screen; a step of aligning the second depth of field screen data with a second screen setting signal by a screen management module; display The method further includes a step of displaying the obtained second screen on a second depth of field screen different from the first depth of field screen. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic diagram illustrating a composite display device according to a first embodiment of the present disclosure. [Figure 2] 1 is a cross-sectional view of a composite display according to the present disclosure. [Figure 3] FIG. 1 is a top view of a composite display in accordance with the present disclosure. [Figure 4] 10 is a flowchart showing a control method for a composite display device according to a second embodiment of the present disclosure. [Figure 5] 5 is a flowchart showing a process of generating a first screen setting signal and a second screen setting signal in the control method of the composite display device of FIG. 4. [Figure 6] FIG. 4 is a diagram illustrating a transmission frequency spectrum of a first display panel according to the present disclosure. [Figure 7] FIG. 10 is a diagram showing the spectrum versus emission intensity of a second display panel according to the present disclosure. [Figure 8A] 2 is a schematic diagram showing a static screen of a first display panel according to the present disclosure. FIG. [Figure 8B] 10 is a schematic diagram showing a dynamic screen of a second display panel according to the present disclosure. FIG. [Figure 8C] 1 is a schematic diagram illustrating a composite screen of a composite display according to the present disclosure. [Figure 9A] FIG. 2 is a schematic diagram illustrating a first depth of field screen of a first display panel according to the present disclosure. [Figure 9B] FIG. 10 is a schematic diagram illustrating a second depth of field screen of a second display panel according to the present disclosure. [Figure 9C] 1 is a schematic diagram illustrating a composite screen of a composite display according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, several embodiments of the present disclosure will be described with reference to the drawings. For clarity, many practical details are set forth in the following description. However, it should be understood that these practical details are not intended to limit the present disclosure. That is, in some embodiments of the present disclosure, these practical details are not necessary. In addition, to simplify the drawings, some well-known and commonly used structures and elements are simply and diagrammatically shown in the drawings, and overlapping elements may be represented by the same numerals.

[0025] Furthermore, in this specification, a reference to an element (or unit, module, etc.) being "connected / coupled" to another element may refer to the element being directly connected / coupled to the other element, or to the element being indirectly connected / coupled to the other element, i.e., another element being interposed between the element and the other element. When an element is "directly connected / coupled" to another element, it indicates that no other element is interposed between the element and the other element. Terms such as "first," "second," and "third" are used merely to describe different elements and do not limit the elements themselves, so a "first element" can be read as a "second element." Furthermore, the combinations of elements / units / circuits in this specification are not commonly known, conventional, or publicly known combinations in this field. Whether the elements / units / circuits themselves are publicly known does not determine whether the combinations can be easily achieved by a person skilled in the art.

[0026] Please refer to Figures 1, 2, and 3 together. Figure 1 shows a schematic diagram of a composite display device according to a first embodiment of the present disclosure, Figure 2 shows a cross-sectional view of the composite display according to the present disclosure, and Figure 3 shows a top view of the composite display of Figure 2. It is necessary to explain that the composite display 110 in Figure 1 is shown in an exploded view to easily explain the structural arrangement of each element of the composite display device 100. As shown in Figure 1, the composite display device 100 includes a composite display 110, a luminance acquisition module 120, a screen management module 130, and a panel control module 140.

[0027] The combined display 110 includes a first display panel 111 and a second display panel 112. The first display panel 111 is disposed in front of the second display panel 112 along the stacking direction (i.e., the Z direction), and the second display panel 112 is disposed behind the first display panel 111 in alignment. The brightness acquisition module 120 is electrically connected to the combined display 110 and is used to acquire an environmental brightness 1201 around the combined display 110. The screen management module 130 is electrically connected to the brightness acquisition module 120 and acquires the environmental brightness 1201 from the brightness acquisition module 120. The screen management module 130 generates a first screen setting signal 131 corresponding to the first display panel 111 based on the environmental brightness 1201, and generates a second screen setting signal 132 corresponding to the second display panel 112 based on the first screen setting signal 131. The panel control module 140 is electrically connected to the screen management module 130 and the combined display 110, and receives a first screen setting signal 131 and a second screen setting signal 132 from the screen management module 130. The panel control module 140 supplies a first control signal 141 to the first display panel 111 based on the first screen setting signal 131, and supplies a second control signal 142 to the second display panel 112 based on the second screen setting signal 132. The panel control module 140 controls the first display panel 111 to display the first screen via the first control signal 141. display and controls the second display panel 112 to display the second screen via the second control signal 142. display Both the first and second screens are controlled to move in the Z direction. displayTherefore, the first screen and the second screen are overlapped to form a composite screen. Note that either the first display panel 111 or the second display panel 112 may be controlled by the panel control module 140 to independently display a single image. As a result, the composite display device 100 of the present disclosure may drive either the first display panel 111 or the second display panel 112 to independently display an image, or may drive the first display panel 111 and the second display panel 112 to simultaneously display different images, for example, to display static or dynamic images in front and behind, or three-dimensional effects with different depths of field in front and behind, and further overlap the images to create a composite screen with multiple visual effects.

[0028] As shown in FIG. 2 , the composite display 110 may further include an adhesive layer 113. The adhesive layer 113 is disposed between the first display panel 111 and the second display panel 112 to secure the first display panel 111 to the second display panel 112. The adhesive layer 113 may be made of, but is not limited to, an optical clear adhesive (OCA) or other suitable light-transmitting adhesive material. The thickness of the adhesive layer 113 is negligible, ranging from several tens to several hundreds of microns, so that the first display panel 111 and the second display panel 112 are tightly attached to each other, avoiding interfacial reflections due to changes in the refractive index of the air medium and further reducing light transmission loss. In another embodiment, the first display panel and the second display panel may be spaced apart, i.e., an air medium is maintained between them, reducing the effects of heat conduction and cost control between the two panels.

[0029] Specifically, the first display panel 111 may be a transflective display panel, and may be, for example, a cholesteric liquid crystal display panel, i.e., a display panel in a cholesteric liquid crystal display (ChLCD), and the second display panel 112 may be an active light-emitting display panel, and may be, for example, a submillimeter light-emitting diode (mini LED) display panel, a micro light-emitting diode (micro LED) display panel, an organic light-emitting diode (OLED) or a perovskite light-emitting diode (PeLED) display panel, but the contents of the present disclosure are not limited thereto.

[0030] 1 and 3, the first display panel 111 has a first viewable area R1 for displaying a first screen, and the second display panel 112 has a second viewable area R2 for displaying a second screen. The first viewable area R1 at least partially overlaps with the second viewable area R2 to form an overlapping area R3, and the area of ​​the overlapping area R3 may occupy 80% or more of the area of ​​the first display panel 111 (i.e., the total area of ​​the panel). In this embodiment, the first viewable area R1 and the second viewable area R2 may be the effective pixel areas of the two panels, respectively, and the first viewable area R1 completely overlaps with the second viewable area R2 to maximize the overlapping area between the first and second screens.

[0031] Specifically, the second display panel 112 may have a second visible region R2 as an effective pixel region and a non-display region (not referenced) surrounding the second visible region R2. The second visible region R2 may include a plurality of pixels arranged in multiple columns and multiple rows along the X and Y directions, respectively, where the X, Y, and Z directions are perpendicular to each other. Each pixel may include a light-emitting element (e.g., a mini LED, a micro LED, an OLED, or a PeLED) and an active element (e.g., a thin-film transistor (TFT)). Depending on the needs of different products, the multiple light-emitting elements may include multiple light-emitting elements of different colors or multiple light-emitting elements of a single color. When multiple light-emitting elements form a pixel, the multiple light-emitting elements may include multiple red light-emitting elements, multiple green light-emitting elements, and multiple blue light-emitting elements. The non-display region may extend between the second visible region R2 and the frame of the second display panel 112. Electronic components (e.g., driving circuits, chips, conductive lines, etc.) supporting the second visible region R2 may be provided in the non-display region, but the present disclosure is not limited thereto.

[0032] In some embodiments, the composite display device 100 may further include a cloud server 150. The luminance acquisition module 120 may include a sensing sub-module 121 and a remote sub-module 122. The sensing sub-module 121 may be, but is not limited to, a luminance sensor. The sensing sub-module 121 is electrically connected to the composite display 110 and can be used to sense the surroundings of the composite display 110 and generate the ambient luminance 1201. The remote sub-module 122 may be, but is not limited to, a wireless communication device. The remote sub-module 122 is signal-connected to a cloud server 150 (e.g., a weather forecast service) via the Internet and can be used to acquire the ambient luminance 1201 from the cloud server 150 based on location information of the composite display 110. In other embodiments, to reduce system costs, the luminance acquisition module can acquire the ambient luminance by simply deploying either the sensing sub-module or the remote sub-module.

[0033] In some embodiments, the screen management module 130 may be, but is not limited to, a timing controller (TCON), and the panel control module 140 may be, but is not limited to, a driver integrated circuit (IC). The screen management module 130 may include a processor and a memory. The memory stores a reference luminance 1301 and an artificial intelligence (AI) algorithm 1302. The ambient luminance 1201 and the reference luminance 1301 may be luminance values, but in other embodiments, the ambient luminance and the reference luminance may be illuminance values, and the illuminance value may be, for example, but is not limited to, 2000 lux (Lux). The AI ​​algorithm 1302 may be, but is not limited to, a deep learning algorithm or a machine learning algorithm. The processor is electrically connected to the memory and performs two screen management functions based on the reference luminance 1301 and the AI ​​algorithm 1302: one is to correct the screen luminance, and the other is to classify the screen content.

[0034] For correcting the screen brightness, the screen management module 130 generates a first screen setting signal 131 based on the ambient brightness 1201, and sets the transmittance of the first display panel 111 (i.e., adjusts the grayscale value of the first screen) through the first screen setting signal 131, where the first screen setting signal 131 may include transmittance frequency spectrum data. After receiving the first screen setting signal 131 provided by the screen management module 130, the panel control module 140 can use a first control signal 141 to change the transmittance of the first display panel 111. It should be noted that due to various considerations of materials, manufacturing, and structural arrangement, the first display panel 111 has reduced transmittance in a part of the visible light frequency band, and therefore the transmittance of the first display panel 111 for different color spectrums is different. Therefore, the screen management module 130 can capture the first transmittance section, the second transmittance section, and the third transmittance section, which respectively correspond to the red spectrum, the green spectrum, and the blue spectrum, from the transmission frequency spectrum data of the first screen setting signal 131, and adjust the first intensity parameter, the second intensity parameter, and the third intensity parameter, which correspond to the red spectrum, the green spectrum, and the blue spectrum, in the second screen setting signal 132 according to the first transmittance section, the second transmittance section, and the third transmittance section. After receiving the second screen setting signal 132 provided by the screen management module 130, the panel control module 140 transmits the second control signal 142 to the second display panel 112 according to the second screen setting signal 132 to adjust the light emission intensities of the red light emitting elements, the green light emitting elements, and the blue light emitting elements, so that the composite screen of the composite display 110 can achieve screen color uniformity.

[0035] In some embodiments, the screen management module 130 can compare the ambient brightness 1201 with the reference brightness 1301. When the ambient brightness 1201 is greater than the reference brightness 1301 (i.e., the ambient light is strong), the screen management module 130 uses the first screen setting signal 131 to set the first display panel 111 located in front to a reflective mode (planar mode), and uses the second screen setting signal 132 to set the second display panel 112 to a reflective mode (planar mode). Turn off the powerIn the reflective mode, the cholesteric liquid crystal is in a planar alignment state, and the first display panel 111 reflects the ambient light to illuminate the first screen. display Conversely, when the ambient luminance 1201 is lower than the reference luminance 1301 (i.e., the ambient light is weak), the screen management module 130 uses the first screen setting signal 131 to set the first display panel 111 to the transmission mode (Focal Conic Mode), and uses the second screen setting signal 132 to set the second display panel 112 to the transmission mode (Focal Conic Mode). Turn on the In the transmissive mode, the cholesteric liquid crystal is in a focal conic state, and therefore, the second display panel 112 located behind the cholesteric liquid crystal is transparent. display The second screen can be transmitted through the first display panel 111. As can be seen from the above, when the ambient light changes, the screen management module 130 can timely provide the first screen setting signal 131 and the second screen setting signal 132 to the panel control module 140, and the panel control module 140 can provide the first control signal 141 and the second control signal 142 to the first display panel 111 and the second display panel 112 respectively according to the first screen setting signal 131 and the second screen setting signal 132, and further control the combined display 110 to switch between different display modes, which not only provides high screen quality but also achieves the effect of saving energy.

[0036] Regarding the classification of screen content, in some embodiments, the screen management module 130 can obtain screen content data 1101 from an external controller (not shown) and use an artificial intelligence algorithm 1302 to classify the screen content data 1101 into static screen data and dynamic screen data. The artificial intelligence algorithm 1302 can then classify the screen content data 1101 into static screen data and dynamic screen data by identifying differences between the static content and the dynamic content in the frames before and after the static content. The screen management module 130 then aligns the static screen data with the first screen setting signal 131 and displays the static screen data on the first display panel 111. displayThe screen management module 130 can match the dynamic screen data with the second screen setting signal 132 and display the first screen on the static screen. display The second screen can be displayed as a dynamic screen that is different from the static screen.

[0037] In some embodiments, the screen management module 130 may use an artificial intelligence algorithm 1302 to divide the screen content data 1101 into first depth of field screen data and second depth of field screen data according to the magnitude of different depths of field (DOF) in the screen content data 1101. Then, the screen management module 130 may match the first depth of field screen data with the first screen setting signal 131 and display the first display panel 111. display The screen management module 130 can match the second depth of field screen data with the second screen setting signal 132 and display the first screen on the second display panel 112. display The second screen can be displayed on a second depth of field screen that is different from the first depth of field screen. A method for controlling the composite display 110 will be described in detail below with reference to the accompanying drawings.

[0038] Please also refer to Figures 1, 4, and 5. Figure 4 shows a flowchart of a control method for a composite display device according to a second embodiment of the present disclosure, and Figure 5 shows a flowchart of steps for generating a first screen setting signal and a second screen setting signal in the control method for a composite display device of Figure 4. As shown in Figures 1 and 4, the control method 200 for a composite display device may be automatically performed by the composite display device 100, and may include steps S01, S02, and S03.

[0039] In step S01, the luminance acquisition module 120 acquires the environmental luminance 1201 around the composite display 110.

[0040] In step S02, the screen management module 130 generates a first screen setting signal 131 corresponding to the first display panel 111 based on the ambient brightness 1201, and generates a second screen setting signal 132 corresponding to the second display panel 112 based on the first screen setting signal 131.

[0041] Step S03 is to provide a first control signal 141 to the first display panel 111 based on the first screen setting signal 131 by the panel control module 140, and to cause the first display panel 111 to display the first screen through the first control signal 141. display and a panel control module 140 controls the second display panel 112 to display the second screen based on the second screen setting signal 132, and supplies a second control signal 142 to the second display panel 112 via the second control signal 142. display As a result, the control method 200 for a composite display device according to the present disclosure can drive either the first display panel 111 or the second display panel 112 to display a single screen, or can drive the first display panel 111 and the second display panel simultaneously to display the first screen and the second screen, respectively, and can create a composite screen with a variety of visual effects by overlapping the first screen with the second screen.

[0042] 5, step S02 may further include steps S021, S022, and S023. In step S021, the screen management module 130 determines whether the ambient luminance 1201 is greater than the reference luminance 1301 to generate a luminance determination result. If the luminance determination result is "YES," step S022 is executed. In step S022, the panel control module 140 controls the first display panel 111 to operate in a reflective mode based on the first screen setting signal 131, and controls the second display panel 112 to operate in a reflective mode based on the second screen setting signal 132. Turn off the power On the other hand, if the brightness determination result is "NO", step S023 is executed. In step S023, the panel control module 140 controls the first display panel 111 to operate in a transmissive mode according to the first screen setting signal 131, and controls the second display panel 112 to operate in a transmissive mode according to the second screen setting signal 132. Turn on theThe first display panel 111 has a bistable mode (planar alignment mode and focal conic alignment mode), and in the reflective mode, it does not require an additional backlight source to enhance brightness and display the screen, and power is consumed only to refresh the screen (switch the cholesteric liquid crystal state), which significantly reduces the power consumption of the entire composite display 110.

[0043] Please continue to refer to FIGS. 1, 6, and 7. FIG. 6 shows a transmission frequency spectrum diagram of a first display panel according to the present disclosure, and FIG. 7 shows a spectrum-emission intensity diagram of a second display panel according to the present disclosure. As shown in FIGS. 1, 6, and 7, step S02 may further include the steps of: capturing, by the screen management module 130, a first transmittance section, a second transmittance section, and a third transmittance section corresponding to the red spectrum RS, the green spectrum GS, and the blue spectrum BS, respectively, from the transmission frequency spectrum data 1311 of the first screen setting signal 131; and adjusting, based on the first transmittance section, the second transmittance section, and the third transmittance section, a first intensity parameter P1, a second intensity parameter P2, and a third intensity parameter P3 corresponding to the red spectrum RS, the green spectrum GS, and the blue spectrum BS in the second screen setting signal 132.

[0044] In detail, the second display panel 112 displays the second screen toward the first display panel 111. displayIn this case, the transmittance of the first display panel 111 is not 100%. For example, in some frequency bands of visible light, such as the green spectrum GS (corresponding to a wavelength range of 500 nm to 580 nm) and the blue spectrum BS (corresponding to a wavelength range of 400 nm to 500 nm), the transmittance is low. In this case, the screen management module 130 performs a screen brightness correction process to correct the brightness of the second screen of the second display panel 112. In the screen correction process, the screen management module 130 proportionally adjusts the emission intensities of the second display panel 112 for different color spectrums based on the transmittance changes of the first display panel 111 for different color spectrums (i.e., the first transmittance section, the second transmittance section, and the third transmittance section). For example, since the transmittance of the first display panel 111 for the red spectrum RS (corresponding to the wavelength range of 580 nm to 680 nm) is three times higher than the transmittance of the green spectrum GS and the blue spectrum BS (as shown in FIG. 6), the screen management module 130 reduces the magnitude of the numerical value of the first intensity parameter P1 corresponding to the red spectrum RS in the second screen setting signal 132, so that the panel control module 140 transmits the second control signal 142 to the second display panel 112 based on the second screen setting signal 132 to adjust and reduce the emission intensity of the red light-emitting element to 1 / 3 of the original intensity, thereby maintaining the color uniformity of the screen.

[0045] Please continue to refer to Figures 1, 8A, 8B, and 8C. Figure 8A shows a schematic diagram of a static screen of a first display panel according to the present disclosure, Figure 8B shows a schematic diagram of a dynamic screen of a second display panel according to the present disclosure, and Figure 8C shows a schematic diagram of a combined screen of a combined display according to the present disclosure. As shown in Figures 1, 8A, 8B, and 8C, step S02 includes the steps of obtaining screen content data 1101 by a screen management module 130 and dividing the screen content data 1101 into static screen data and dynamic screen data, and aligning the static screen data with a first screen setting signal 131 by the screen management module 130 and displaying the static screen data and the dynamic screen data by the first display panel 111. displaya step of displaying the first screen on the static screen M1; a step of aligning the dynamic screen data with the second screen setting signal 132 by the screen management module 130; display and displaying the second screen displayed on a dynamic screen M2, the dynamic screen M2 being different from the static screen M1 and overlapping with the static screen M1 to form a composite screen MC1. In particular, to control the energy consumption of the entire composite display 110, the screen management module 130 performs a screen classification process to classify the static and dynamic content based on the difference between the previous and next frames. display The target screen content (i.e., screen content data 1101) can be divided into static screen M1 and dynamic screen M2. Static screen M1 indicates that the screen does not need to be updated within a certain period of time and is displayed by the first display panel 111 located in the front. The first display panel 111 maintains the screen without consuming power due to its bi-stable mode characteristics. Dynamic screen M2 indicates that the content changes with each screen update and the content that needs to be changed is limited to a minimum range and is displayed by the second display panel 112 located in the rear. This reduces the range of light-emitting sources, but also reduces energy consumption and even heat energy, which indirectly extends the service life of the combined display 110 and reduces maintenance costs.

[0046] Please continue to refer to Figures 1, 9A, 9B, and 9C. Figure 9A shows a schematic diagram of a first depth-of-field screen of a first display panel according to the present disclosure, Figure 9B shows a schematic diagram of a second depth-of-field screen of a second display panel according to the present disclosure, and Figure 9C shows a schematic diagram of a combined screen of a combined display according to the present disclosure. As shown in Figures 1, 9A, 9B, and 9C, step S02 includes the steps of: obtaining screen content data 1101 by a screen management module 130, and dividing the screen content data 1101 into first depth-of-field screen data and second depth-of-field screen data; and aligning the first depth-of-field screen data with a first screen setting signal 131 by the screen management module 130, and displaying the first depth-of-field screen data by the first display panel 111. displaya step of displaying the first screen on the first depth of field screen M3; a step of matching the second depth of field screen data to the second screen setting signal 132 by the screen management module 130; display and displaying the second image on a second depth-of-field screen M4. The second depth-of-field screen M4 is different from the first depth-of-field screen M3 and overlaps with the first depth-of-field screen M3 to form a composite image MC2. In particular, to display the three-dimensional effects of different depths of field on the composite display 110, the screen management module 130 display The target screen content (i.e., screen content data 1101) can be divided into a first depth of field screen M3 and a second depth of field screen M4. The first depth of field screen M3 may be the main part of the screen, and the second depth of field screen M4 may be the supporting part of the screen. The purpose of the depth of field classification is to achieve the effect of highlighting the main part and attracting attention. In another embodiment, the first display panel displays the second depth of field screen. display and the second display panel may display the first depth of field screen. display It is possible to select whether the first display panel or the second display panel displays the first depth of field screen. display And which is the second depth of field screen? display Whether to perform the display control is determined based on the brightness of the external environment and the attributes of the screen content. Therefore, the control method 200 for a composite display device of the present disclosure achieves multiple functions of environment detection, screen management, and display control through the brightness acquisition module 120, the screen management module 130, and the panel control module 140, respectively, so that the composite display 110 can display multiple display effects and improve the readability of the screen.

[0047] As described above, the composite display device and its control method provided by the present disclosure have the following advantages. First, the respective characteristics of the first and second display panels are utilized to achieve screen optimization and energy saving effects. Second, the uniformity of the screen color is maintained, and the composite display can simultaneously generate different images on different displays. Therefore, the present disclosure can control the images to generate different effects, such as combining still images and moving images, or creating three-dimensional effects with different depths of field. Third, the front first display panel and the rear second display panel are selected according to screen management to display the screen. display Let alone display Even so, at the same time display Either method can be used, so that the composite display has a plurality of display modes.

[0048] The contents of the present disclosure are disclosed in the above embodiments, but the above embodiments are not intended to limit the contents of the present disclosure, and anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the contents of the present disclosure. Therefore, the scope of protection of the contents of the present disclosure should be based on that defined by the scope of the patent application to be attached later. [Explanation of symbols]

[0049] 100: Composite display device 110: Composite display 1101: Screen content data 111: 1st display panel 112: Second display panel 113: Adhesive layer 120: Luminance acquisition module 1201: Ambient brightness 121: Detection submodule 122: Remote submodule 130: Screen management module 1301: Reference luminance 1302: Artificial Intelligence Algorithms 131: 1st screen setting signal 1311: Transmission frequency spectrum data 132: Second screen setting signal 140: Panel control module 141: First control signal 142: Second control signal 150: Cloud server 200: Control method for composite display device M1: Static screen M2: Dynamic Screen M3: 1st depth of field screen M4: 2nd depth of field screen MC1, MC2: Composite screen P1: First intensity parameter P2: Second intensity parameter P3: Third intensity parameter R1: 1st visible region R2: 2nd visible region R3: Overlap area S01, S02, S021, S022, S023, S03: Process BS: Blue spectrum GS: Green spectrum RS: Red spectrum X, Y, Z: direction

Claims

1. a composite display including a first display panel and a second display panel aligned with the first display panel; a brightness acquisition module connected to the composite display and configured to acquire an environmental brightness around the composite display; a screen management module connected to the luminance acquisition module, the screen management module generating a first screen setting signal corresponding to the first display panel based on the environmental luminance, and generating a second screen setting signal corresponding to the second display panel based on the first screen setting signal; a panel control module connected to the screen management module and the combined display, for controlling the first display panel to display a first screen based on the first screen setting signal, and for controlling the second display panel to display a second screen based on the second screen setting signal; Equipped with the first screen and the second screen overlap to form a composite screen; the first screen setting signal includes transmittance frequency spectrum data, and the screen management module captures a first transmittance section, a second transmittance section, and a third transmittance section from the transmittance frequency spectrum data, the first transmittance section, and a third transmittance section corresponding to a red spectrum, a green spectrum, and a blue spectrum, respectively, and adjusts a first intensity parameter, a second intensity parameter, and a third intensity parameter in the second screen setting signal, the first intensity parameter, and the third intensity parameter corresponding to the red spectrum, the green spectrum, and the blue spectrum, respectively, based on the first transmittance section, the second transmittance section, and the third transmittance section.

2. The composite display device of claim 1 , wherein the luminance acquisition module includes a sensing sub-module for sensing the surroundings of the composite display and generating the ambient luminance.

3. The composite display device of claim 1 , wherein the brightness acquisition module includes a remote sub-module signally connected to a cloud server and configured to acquire the ambient brightness from the cloud server based on location information of the composite display.

4. the screen management module determines whether the environmental luminance is greater than a reference luminance to generate a luminance determination result; If the brightness determination result is YES, the panel control module controls the first display panel to be operated in a reflective mode according to the first screen setting signal, and controls the second display panel to be powered off according to the second screen setting signal; 2. The composite display device of claim 1, wherein if the brightness judgment result is NO, the panel control module controls the first display panel to be operated in a transmissive mode based on the first screen setting signal, and controls the second display panel to be powered on based on the second screen setting signal.

5. The screen management module acquires screen content data and divides it into static screen data and dynamic screen data; The screen management module aligns the static screen data with the first screen setting signal, and displays the first screen displayed by the first display panel as a static screen; 2. The composite display device according to claim 1, wherein the screen management module aligns the dynamic screen data with the second screen setting signal, and causes the second screen displayed by the second display panel to be displayed as a dynamic screen different from the static screen.

6. The screen management module acquires and divides screen content data into first depth-of-field screen data and second depth-of-field screen data; The screen management module aligns the first depth-of-field screen data with the first screen setting signal, and displays the first screen displayed by the first display panel on a first depth-of-field screen; 2. The composite display device according to claim 1, wherein the screen management module aligns the second depth of field screen data with the second screen setting signal and displays the second screen displayed by the second display panel on a second depth of field screen different from the first depth of field screen.

7. The composite display comprises:

2. The composite display device according to claim 1, further comprising an adhesive layer provided between the first display panel and the second display panel.

8. 2. The composite display device of claim 1, wherein the first display panel has a first visible area for displaying the first screen, the second display panel has a second visible area for displaying the second screen, the first visible area at least partially overlaps with the second visible area to form an overlapping area, and the area of ​​the overlapping area occupies 80% or more of the area of ​​the first display panel.

9. 2. The composite display device according to claim 1, wherein the first display panel is a cholesteric liquid crystal display panel.

10. 2. The composite display device of claim 1, wherein the second display panel is a submillimeter light-emitting diode (mini LED) display panel, a micro light-emitting diode (micro LED) display panel, an organic light-emitting diode (OLED) display panel, or a perovskite light-emitting diode (PeLED) display panel.

11. acquiring an environmental luminance around a composite display including a first display panel and a second display panel by a luminance acquisition module; generating a first screen setting signal corresponding to the first display panel based on the ambient brightness by a screen management module, and generating a second screen setting signal corresponding to the second display panel based on the first screen setting signal; controlling the first display panel to display a first screen based on the first screen setting signal and the second display panel to display a second screen based on the second screen setting signal by a panel control module; Equipped with the first screen and the second screen overlap to form a composite screen; the first screen setting signal includes transmission frequency spectrum data, and the step of generating the first screen setting signal corresponding to the first display panel based on the environmental luminance by the screen management module, and generating the second screen setting signal corresponding to the second display panel based on the first screen setting signal, includes: a screen management module capturing a first transmittance section, a second transmittance section, and a third transmittance section from the transmission frequency spectrum data, the first transmittance section, and a third transmittance section corresponding to the red spectrum, the green spectrum, and the blue spectrum, respectively; and adjusting a first intensity parameter, a second intensity parameter, and a third intensity parameter corresponding to the red spectrum, the green spectrum, and the blue spectrum in the second screen setting signal based on the first transmittance section, the second transmittance section, and the third transmittance section.

12. The method for controlling a composite display device according to claim 11 , wherein the brightness acquisition module includes a detection sub-module for detecting the surroundings of the composite display and generating the ambient brightness.

13. The control method for a composite display device according to claim 11 , wherein the brightness acquisition module includes a remote sub-module that is signally connected to a cloud server and acquires the ambient brightness from the cloud server based on location information of the composite display.

14. generating, by the screen management module, the first screen setting signal corresponding to the first display panel based on the ambient brightness, and generating, by the screen management module, the second screen setting signal corresponding to the second display panel based on the first screen setting signal, determining whether the environmental luminance is greater than a reference luminance by the screen management module to generate a luminance determination result; If the brightness determination result is YES, the panel control module controls the first display panel to be operated in a reflective mode according to the first screen setting signal, and controls the second display panel to be powered off according to the second screen setting signal; 12. The method for controlling a composite display device according to claim 11, wherein, if the brightness determination result is NO, the panel control module controls the first display panel to be operated in a transmissive mode based on the first screen setting signal, and controls the second display panel to be powered on based on the second screen setting signal.

15. generating, by the screen management module, the first screen setting signal corresponding to the first display panel based on the ambient brightness, and generating, by the screen management module, the second screen setting signal corresponding to the second display panel based on the first screen setting signal, acquiring screen content data by the screen management module and dividing the data into static screen data and dynamic screen data; adjusting the static screen data to the first screen setting signal by the screen management module, and displaying the first screen displayed by the first display panel as a static screen; adjusting the dynamic screen data to the second screen setting signal by the screen management module, so that the second screen displayed by the second display panel is a dynamic screen different from the static screen; The method for controlling a composite display device according to claim 11, comprising:

16. generating, by the screen management module, the first screen setting signal corresponding to the first display panel based on the ambient brightness, and generating, by the screen management module, the second screen setting signal corresponding to the second display panel based on the first screen setting signal, acquiring screen content data by the screen management module and dividing the data into first depth-of-field screen data and second depth-of-field screen data; adjusting the first depth-of-field screen data to the first screen setting signal by the screen management module, and displaying the first screen displayed by the first display panel on the first depth-of-field screen; a step of aligning the second depth of field screen data with the second screen setting signal by the screen management module, and displaying the second screen displayed by the second display panel on a second depth of field screen different from the first depth of field screen; The method for controlling a composite display device according to claim 11, comprising:

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