Display device and control method thereof

Abstract

The application relates to a display device and a control method thereof. The display device comprises a display structure and a light source structure opposite to the display structure in a first direction. The display structure comprises a first light guide plate and a second light guide plate opposite in a second direction, and a double-sided display panel arranged on the first light guide plate and the second light guide plate. The surface of the first light guide plate and the second light guide plate facing the double-sided display panel is a light inlet surface, and the surface of the first light guide plate and the second light guide plate facing the light source structure is a light outlet surface. The second direction intersects the first direction. The light source structure comprises a driving member and a light source. The light source is connected with the driving member and is configured to move along the second direction under the driving of the driving member to face the light inlet surface of at least one of the first light guide plate and the second light guide plate. The display device and the control method thereof can realize mutual switching between single-sided display and double-sided display.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display devices, and particularly relates to a display device and a control method thereof. BACKGROUND

[0002] The existing electronic paper display device often needs the assistance of ambient light from the outside environment to clearly present the picture when presenting the function of double-sided display. However, when there is no ambient light assistance, the picture presented by the electronic paper display device often cannot be read by the user, thereby causing inconvenience in use. Moreover, even if a separate front light is provided for the electronic paper display device, it is still difficult to realize the mutual switching between single-sided display and double-sided display of the electronic paper display device. SUMMARY

[0003] The present application aims to provide a display device and a control method thereof, which can realize mutual switching between single-sided display and double-sided display.

[0004] The first aspect of the present application discloses a display device, comprising a display structure and a light source structure opposite to the display structure in a first direction, the display structure comprising a first light guide plate and a second light guide plate opposite in a second direction, and a double-sided display panel arranged on the first light guide plate and the second light guide plate, the surface of the first light guide plate and the second light guide plate facing the double-sided display panel being a light exit surface, the surface of the first light guide plate and the second light guide plate facing the light source structure being a light entrance surface, and the second direction intersecting the first direction; the light source structure comprising a driving member and a light source, the light source being connected with the driving member, and the light source being configured to move along the second direction under the driving of the driving member to face the light entrance surface of at least one of the first light guide plate and the second light guide plate.

[0005] In an exemplary embodiment of the present application, the display device further comprises a light splitting structure between the display structure and the light source; the light splitting structure comprising a prism structure and a reflection structure, the reflection structure being connected with the prism structure and being arranged along the second direction corresponding to the middle region of the prism structure.

[0006] In an example embodiment of the present application, the prism structure comprises oppositely arranged light-in mirror surface and light-out mirror surface, and oppositely arranged first inclined mirror surface and second inclined mirror surface, the reflecting structure is located between the first inclined mirror surface and the second inclined mirror surface and is spaced apart from the first inclined mirror surface and the second inclined mirror surface; wherein the light-out mirror surface is arranged close to the display structure, the light-in mirror surface is arranged on the side of the light-out mirror surface away from the display structure and close to the light source; the first inclined mirror surface and the second inclined mirror surface are both inclinedly connected between the light-in mirror surface and the light-out mirror surface, the distance between the first inclined mirror surface and the second inclined mirror surface gradually increases from the side of the light-in mirror surface to the side of the light-out mirror surface; the first inclined mirror surface, the second inclined mirror surface and the light-in mirror surface form a first inclined included angle, the angle range of the first inclined included angle is greater than or equal to 30° and less than or equal to 80°.

[0007] In an example embodiment of the present application, the reflecting structure is spaced apart from the light-in mirror surface, and the spacing distance ranges from greater than or equal to 1 mm to less than or equal to 5 mm.

[0008] In an example embodiment of the present application, the reflecting structure comprises a first reflecting side surface arranged towards the first inclined mirror surface, a second reflecting side surface arranged towards the second inclined mirror surface, and a reflecting bottom surface connected between the first reflecting side surface and the second reflecting side surface, the side of the first reflecting side surface away from the reflecting bottom surface is connected with the side of the second reflecting side surface away from the reflecting bottom surface; wherein the second inclined included angle is formed between the first reflecting side surface and the second reflecting side surface, the angle range of the second inclined included angle is greater than or equal to 5° and less than or equal to 30°.

[0009] In an example embodiment of the present application, the width of the light-out mirror surface along the second direction is equal to the thickness of the display structure along the second direction; the width of the reflecting bottom surface along the second direction is equal to the thickness of the double-sided display panel along the second direction.

[0010] In an example embodiment of the present application, the light splitting structure is connected with the driving member and can move with the light source; the width of the light-out mirror surface along the second direction is less than or equal to the width of the first light guide plate or the second light guide plate along the second direction, and greater than the width of the double-sided display panel along the second direction; the width of the reflecting bottom surface along the second direction is equal to the thickness of the double-sided display panel along the second direction.

[0011] In an exemplary embodiment of the present application, the first light guide plate and the second light guide plate each comprise a light inlet portion and a main body portion, the light inlet portion is arranged on the side of the main body portion close to the light source along the first direction, and the surface of the light inlet portion facing the light source structure is the light inlet surface of the first light guide plate or the second light guide plate; wherein the thickness of the light inlet portion along the second direction is greater than the thickness of the main body portion, and is greater than or equal to the width of the light outlet mirror surface along the second direction.

[0012] In an exemplary embodiment of the present application, the driving member comprises a driving motor, a limiting block, a connecting rod and a sliding block; wherein the connecting rod is rotatably connected between the driving motor and the limiting block; the sliding block is connected to the connecting rod and can reciprocally slide along the second direction between the driving motor and the limiting block under the rotation of the connecting rod; the light source is connected to the sliding block and moves synchronously with the sliding block; and / or the display device further comprises a brightness sensor and a controller, the brightness sensor and the driving member are connected to the controller and are controlled by the controller, wherein the brightness sensor is used to detect the display brightness of the double-sided display panel and feed back a signal to the controller; the controller controls the driving member to drive the light source according to the feedback signal.

[0013] The second aspect of the present application discloses a control method of a display device, used for controlling the display device, the control method comprising: obtaining display data of a first display surface and a second display surface in the double-sided display panel; wherein the first display surface and the second display surface can be used for picture display, and a light entrance surface of the first light guide plate is used for guiding light into the first display surface, and a light entrance surface of the second light guide plate is used for guiding light into the second display surface; judging whether the first display surface and the second display surface exist picture display according to the display data; if one of the first display surface and the second display surface exists picture display, and the other does not exist picture display, judging display brightness of the first display surface or the second display surface corresponding to the picture display; if the display brightness is sufficient, turning off the light source; if the display brightness is insufficient, controlling the driving member to drive the light source to move to a position corresponding to the light entrance surface of the first display surface or the second display surface with insufficient display brightness, and turning on the light source; if the first display surface and the second display surface both exist picture display, judging whether the display brightness of the first display surface and the second display surface is sufficient; if the display brightness of the first display surface and the second display surface is sufficient, turning off the light source; if the display brightness of one of the first display surface and the second display surface is insufficient, controlling the driving member to drive the light source to move to a position corresponding to the light entrance surface of the first display surface or the second display surface with insufficient display brightness, and turning on the light source; if the display brightness of the first display surface and the second display surface is both insufficient, controlling the driving member to drive the light source to move to a position corresponding to the light entrance surface of the first display surface and the light entrance surface of the second display surface, and turning on the light source; if the display brightness of the first display surface and the second display surface is both sufficient, turning off the light source; if the first display surface and the second display surface both do not exist picture display, turning off the light source.

[0014] The present application has the following beneficial effects:

[0015] In the embodiments of the present application, when the light source is driven by the driving member to move along the second direction to be oppositely arranged with the light entrance surface of one of the first light guide plate and the second light guide plate, single-sided display of the display device can be realized; when the light source is driven by the driving member to move along the second direction to be oppositely arranged with the light entrance surface of the first light guide plate and the light entrance surface of the second light guide plate, double-sided display of the display device can be realized. Therefore, the display device of the present application can realize mutual switching between single-sided display and double-sided display by driving the light source to move by the driving member.

[0016] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application. It is readily apparent to one skilled in the art that the following figures are merely some embodiments of the present application, and other figures can be obtained by those skilled in the art without any creative effort on the basis of these figures.

[0019] Figure 1 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0020] Figure 2 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0021] Figure 3 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0022] Figure 4 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0023] Figure 5 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown. Figure 4 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0024] Figure 6 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0025] Figure 7 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0026] Figure 8 A schematic diagram of the light propagation path of the light emitted by the light source of the display device according to Embodiment One of the present application is shown.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 10, housing; 11, display structure; 111, first light guide plate; 112, second light guide plate; 1121, light inlet part; 1122, main body part; 113, double-sided display panel; 1131, first display surface; 1132, second display surface; 12, light source; 13, driving member; 131, driving motor; 132, limiting block; 133, connecting rod; 134, sliding block; 14, light splitting structure; 141, prism structure; 1411, light inlet mirror surface; 1412, light outlet mirror surface; 1413, first connecting mirror surface; 1414, second connecting mirror surface; 1415, first inclined mirror surface; 1416, second inclined mirror surface; 142, reflecting structure; 1421, first reflecting side surface; 1422, second reflecting side surface; 1423, reflecting bottom surface; a, first direction; b, second direction. DETAILED DESCRIPTION

[0029] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0030] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0031] Embodiment One

[0032] Referring to Figures 1 to 3 Embodiment One discloses a display device. The display device can be a microcapsule display device, a microcup display device, or the like reflective display device.

[0033] As shown in Figure 1 The display device includes a housing 10, and a display structure 11 and a light source structure opposite the display structure 11 in a first direction a, which are installed in the housing 10.

[0034] Further, as shown in Figure 1 The display structure 11 includes a first light guide plate 111 and a second light guide plate 112 opposite in a second direction b, and a double-sided display panel 113 provided on the first light guide plate 111 and the second light guide plate 112. The second direction b intersects the first direction a. In this embodiment, the second direction b is perpendicular to the first direction a.

[0035] For example, the double-sided display panel 113 includes an electrophoretic display layer, a first substrate, and a second substrate. The electrophoretic display layer is disposed between the first substrate and the second substrate. The first substrate and the second substrate are connected to a controller via a circuit for applying a voltage across the electrophoretic display layer, causing the electrophoretic display layer to display the desired content. The electrophoretic display layer may be, for example, a microcapsule electrophoretic display layer, which encapsulates a transparent electrophoretic liquid, positively or negatively charged particles of one color, and neutral particles of another color.

[0036] In this embodiment, combined with Figure 1 As shown, the surfaces of the first light guide plate 111 and the second light guide plate 112 facing the double-sided display panel 113 are light-incoming surfaces, and the surfaces of the first light guide plate 111 and the second light guide plate 112 facing the light source structure are light-incident surfaces.

[0037] Furthermore, combined Figure 1 As shown, the light source structure includes a driver 13 and a light source 12. The light source 12 is connected to the driver 13 and is configured to move along a second direction b under the drive of the driver 13 to face the light incident surface of at least one of the first light guide plate 111 and the second light guide plate 112. For example, the light source structure is an LED (light-emitting diode).

[0038] It should be understood that the double-sided display panel 113 includes a first display surface 1131 and a second display surface 1132. The light-emitting surface of the first light guide plate 111 is used to provide a light source 12 for the first display surface 1131 of the double-sided display panel 113, and the light-emitting surface of the second light guide plate 112 is used to provide a light source 12 for the second display surface 1132 of the double-sided display panel 113.

[0039] In this embodiment, when the light source 12 moves along the second direction b under the drive of the driving member 13 to be positioned opposite the light incident surface of either the first light guide plate 111 or the second light guide plate 112, single-sided display of the display device can be achieved (e.g., Figure 3 (As shown); when the light source 12 moves along the second direction b under the drive of the drive member 13 to be arranged opposite to the light incident surface of the first light guide plate 111 and the light incident surface of the second light guide plate 112, double-sided display of the display device can be realized (as shown). Figure 1 (As shown). Therefore, the display device of this application can switch between single-sided display and double-sided display by driving the movement of the light source 12 through the driving member 13.

[0040] In this embodiment, as Figure 1As shown, the driving member 13 comprises a driving motor 131 (e.g. a servo motor), a limit block 132, a connecting rod 133 and a sliding block 134. The connecting rod 133 is rotatably connected between the driving motor 131 and the limit block 132. The sliding block 134 is connected to the connecting rod 133 and is capable of reciprocating along the second direction b between the driving motor 131 and the limit block 132 under the rotation of the connecting rod 133. The light source 12 is connected to the sliding block 134 and moves synchronously with the sliding block 134.

[0041] For example, the sliding block 134 and the connecting rod 133 jointly form a ball screw, which mainly functions to convert the rotary motion into linear motion or convert the torque into axial reciprocating force, while having the characteristics of high precision, reversibility and high efficiency. When the sliding block 134 and the connecting rod 133 jointly form a ball screw, the driving motor 131 first applies a torque to the connecting rod 133 of the ball screw, and then converts the torque into an axial force through the ball screw, so as to make the sliding block 134 reciprocate along the axial direction of the connecting rod 133.

[0042] It should be understood that the connecting rod 133 is rotatably connected between the driving motor 131 and the limit block 132, and after the sliding block 134 is connected to the connecting rod 133, the driving motor 131 and the limit block 132 can limit the sliding block 134 to move only along the connecting rod 133 between the driving motor 131 and the limit block 132. In addition, the axis of the connecting rod 133 is parallel to the second direction b.

[0043] In combination with Figure 1 and Figure 2 As shown, the display device further comprises a light splitting structure 14 located between the display structure 11 and the light source 12, for collecting and splitting the light emitted by the light source 12 into two parts. One part of the light split by the light splitting structure 14 enters the light entrance surface of the first light guide plate 111 and is emitted from the light exit surface of the first light guide plate 111 to one display surface of the double-sided display panel 113, and the other part of the light enters the light entrance surface of the second light guide plate 112 and is emitted from the light exit surface of the second light guide plate 112 to the other display surface of the double-sided display panel 113, so as to provide light to the two display surfaces of the double-sided display panel 113 simultaneously, and finally realize the double-sided display of the double-sided display panel 113.

[0044] Further, in combination with Figure 2As shown, the light splitting structure 14 includes a prism structure 141 and a reflecting structure 142, the reflecting structure 142 is connected with the prism structure 141 and is arranged along the second direction b corresponding to the middle region of the prism structure 141. Wherein, the prism structure 141 is mainly used for the refraction of the light emitted by the light source 12 to refract the light to a light exit surface of the prism structure 141 for emission, and the reflecting structure 142 is mainly used for the reflection of the light, and mainly reflects the light emitted to the reflecting structure 142 to other regions.

[0045] In the embodiment, the light splitting structure 14 is connected with the driving member 13 and can move synchronously with the light source 12.

[0046] It should be understood that when the light splitting structure 14 can move synchronously with the light source 12, the light splitting structure 14 and the light source 12 are driven to move by the driving member 13 to the position where the light source 12 can provide the light for the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112 at the same time (for example Figure 1 the position where the light splitting structure 14 and the light source 12 are located): the light splitting structure 14 is arranged opposite to the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112 and the side surface of the double-sided display panel 113 at the same time. At this time, when the light emitted by the light source 12 is first emitted into the prism structure 141 of the light splitting structure 14 and the light is collected by the prism structure 141 and emitted towards the display structure 11, a part of the light is emitted to the side surface of the double-sided display panel 113 of the display structure 11, and the part of the light cannot enter the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112, and cannot provide the light source 12 for the double-sided display panel 113.

[0047] Therefore, as shown in Figure 1 and Figure 2 , after the reflecting structure 142 is arranged connected with the prism structure 141 and arranged along the second direction b corresponding to the middle region of the prism structure 141, when the light splitting structure 14 and the light source 12 are driven by the driving member 13, the reflecting structure 142 of the light splitting structure 14 can be arranged opposite to the side surface of the double-sided display panel 113; at this time, the prism structures 141 on both sides of the reflecting structure 142 are arranged opposite to the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112, so as to change the light originally emitted to the side surface of the double-sided display panel 113 to the reflecting structure 142, and then emitted to the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112 by the reflecting structure 142, thereby improving the utilization rate of the light.

[0048] For example, the reflecting structure 142 is a wedge, which can be directly located inside the prism structure 141, or can be located outside the prism structure 141, i.e., between the prism structure 141 and the display structure 11, for the purpose of splitting the light rays entering the prism structure 141 into two parts.

[0049] In the embodiment, the prism structure 141 is combined with the display structure 11. Figure 2 As shown in the figure, the prism structure 141 includes oppositely arranged light-in mirror surface 1411 and light-out mirror surface 1412, first connecting mirror surface 1413 and second connecting mirror surface 1414, and oppositely arranged first inclined mirror surface 1415 and second inclined mirror surface 1416 along the second direction b. The first connecting mirror surface 1413 is connected between the light-out mirror surface 1412 and the first inclined mirror surface 1415, the side of the first inclined mirror surface 1415 away from the first connecting mirror surface 1413 is connected with the light-in mirror surface 1411, the second connecting mirror surface 1414 is connected between the light-out mirror surface 1412 and the second inclined mirror surface 1416, and the side of the second inclined mirror surface 1416 away from the second connecting mirror surface 1414 is connected with the light-in mirror surface 1411.

[0050] In addition, the distance between the first inclined mirror surface 1415 and the second inclined mirror surface 1416 gradually increases from the light-in mirror surface 1411 to the side of the light-out mirror surface 1412; the first inclined mirror surface 1415, the second inclined mirror surface 1416 and the light-in mirror surface 1411 all form a first inclined angle, and the angle range of the first inclined angle is greater than or equal to 30° and less than or equal to 80°. In the embodiment, the angle range of the first inclined angle is greater than or equal to 30° and less than or equal to 78°.

[0051] Optionally, the angle of the first inclined angle is 30°, 33°, 38°, 41°, 45°, 49°, 51°, 54°, 56°, 60°, 64°, 67°, 70°, 72°, 75° or 78°.

[0052] For example, the first connecting mirror surface 1413 and the second connecting mirror surface 1414 are both perpendicular to the light-out mirror surface 1412, and of course in other embodiments, the first connecting mirror surface 1413 and the second connecting mirror surface 1414 can be obliquely connected to the light-out mirror surface 1412.

[0053] It should be understood that the light-out mirror surface 1412 is arranged close to the display structure 11, and the light-in mirror surface 1411 is arranged on the side of the light-out mirror surface 1412 away from the display structure 11 and close to the light source 12. Therefore, the light emitted by the light source 12 first passes through the light-in mirror surface 1411 and then is emitted through the light-out mirror surface 1412.

[0054] In the embodiment, the prism structure 141 is combined with the display structure 11. Figure 2As shown, the width of the light-in mirror surface 1411 along the second direction b is 1.5-4 times the width of the light source 12 along the second direction b, so as to better receive the light emitted by the light source 12.

[0055] In some embodiments, the light-in mirror surface 1411 is spaced apart from the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112. Figure 2 As shown, the width of the light-out mirror surface 1412 along the second direction b is less than or equal to the width of the first light guide plate 111 or the second light guide plate 112 along the second direction b.

[0056] In the present embodiment, the light-out mirror surface 1412 is spaced apart from the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112. Figure 2 As shown, the width of the light-out mirror surface 1412 along the second direction b is equal to the width of the first light guide plate 111 or the second light guide plate 112 along the second direction b. At this time, when the double-sided display panel 113 realizes single-sided display, the light emitted by the light source 12 can be concentrated only at the light-in surface of the first light guide plate 111 or the second light guide plate 112 through the prism structure 141, without being concentrated at the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112 at the same time through the prism structure 141. So as to more optimally utilize the light emitted by the light source 12

[0057] Further, the light-out mirror surface 1412 is spaced apart from the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112. Figure 1 and Figure 2 As shown, the width of the light-out mirror surface 1412 along the second direction b is greater than the width of the double-sided display panel 113 along the second direction b. Therefore, during the movement of the light source 12, even if the prism structure 141 of the light splitting structure 14 is arranged opposite to the double-sided display panel 113, at least one of the first light guide plate 111 and the second light guide plate 112, the light splitting structure 14 will not be unable to provide light for the first light guide plate 111 or the second light guide plate 112 due to the side surface of the double-sided display panel 113 blocking the light.

[0058] In the present embodiment, the light-out mirror surface 1412 is spaced apart from the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112. Figure 2 As shown, the reflection structure 142 is located between the first inclined mirror surface 1415 and the second inclined mirror surface 1416, and is spaced apart from the first inclined mirror surface 1415, the second inclined mirror surface 1416, and the first connecting mirror surface 1413 and the second connecting mirror surface 1414.

[0059] In some embodiments, the reflection structure 142 is spaced apart from the light-in mirror surface 1411, and the spacing distance therebetween is greater than or equal to 1 mm and less than or equal to 5 mm.

[0060] Optionally, the spacing distance between the reflection structure 142 and the light-in mirror surface 1411 is 1 mm, 1.5 mm, 1.9 mm, 2.1 mm, 2.5 mm, 2.8 mm, 3 mm, 3.4 mm, 3.7 mm, 4.1 mm, 4.5 mm, 4.8 mm, or 5 mm.

[0061] It should be understood that when the reflective structure 142 is arranged spaced apart from the light-in mirror surface 1411, the light emitted by the light source 12 towards the reflective structure 142 will first enter the prism structure 141 through the light-in mirror surface 1411 and propagate for a distance before reaching the surface of the reflective structure 142. In this process, part of the light emitted by the light source 12 towards the reflective structure 142 will be refracted towards the area away from the reflective structure 142 during the propagation in the prism structure 141, and thus only part of the light originally emitted towards the reflective structure 142 will reach the reflective structure 142, finally reducing the light emitted from the light-out mirror surface 1412 opposite to the reflective structure 142 in the first direction a, increasing the light emitted from the area of the light-out mirror surface 1412 misaligned with the reflective structure 142 in the first direction a, and finally improving the light utilization rate of the double-sided display panel 113 when realizing double-sided display.

[0062] In this embodiment, as shown in Figure 2 The reflective structure 142 includes oppositely arranged first reflective side surface 1421, second reflective side surface 1422 and reflective bottom surface 1423. The first reflective side surface 1421 and the second reflective side surface 1422 are respectively connected to the two sides of the reflective bottom surface 1423 along the second direction b, and the side of the first reflective side surface 1421 and the second reflective side surface 1422 away from the reflective bottom surface 1423 is connected to each other.

[0063] The first reflective side surface 1421 is arranged towards the first inclined mirror surface 1415, and the second reflective side surface 1422 is arranged towards the second inclined mirror surface 1416. The distance between the first reflective side surface 1421 and the second reflective side surface 1422 gradually increases from the light-in mirror surface 1411 to the side of the light-out mirror surface 1412. The second inclined angle is formed between the first reflective side surface 1421 and the second reflective side surface 1422, and the angle range of the second inclined angle is greater than or equal to 5° and less than or equal to 30°.

[0064] Optionally, the angle of the second inclined angle is 5°, 8°, 12°, 15°, 19°, 24°, 29° or 30°.

[0065] In this embodiment, in combination with Figure 1 and Figure 2As shown, the width of the reflective bottom surface 1423 along the second direction b is equal to the thickness of the double-sided display panel 113 along the second direction b. Therefore, when the display device implements double-sided display, by driving the light source 12 and the light splitting structure 14 to move by the driving member 13, so that the light exit mirror surface 1412 of the light splitting structure 14 is arranged opposite to the light entrance surface of the first light guide plate 111 and the second light guide plate 112, the reflective bottom surface 1423 can just cover the side surface of the double-sided display panel 113 along the first direction a, and then the part of light originally directly emitted to the double-sided display panel 113 is reflected to the light entrance surface of the first light guide plate 111 or the second light guide plate 112, thereby improving the utilization rate of light.

[0066] In addition, if the display device is only used for double-sided display, the light source 12 and the light splitting structure 14 can also be moved to a position where the light source 12 can provide light for both display surfaces of the double-sided display panel 113, and then a reflective sheet is attached to the area where the first light guide plate 111 and the second light guide plate 112 are not arranged opposite to the light splitting structure 14, and the reflective surface of the reflective sheet faces the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112, so as to prevent the light entering the first light guide plate 111 and the second light guide plate 112 from being emitted outside through the corresponding light entrance surface of the first light guide plate 111 or the second light guide plate 112 after being guided through the light guide dots, thereby reducing the waste of light.

[0067] In the embodiment, the display device further comprises a brightness sensor and a controller, and the brightness sensor and the driving member 13 are connected with the controller and controlled by the controller. The brightness sensor is used to detect the display brightness of the double-sided display panel 113 and feed back a signal to the controller, and the controller controls the driving member 13 to drive the light source 12 according to the feedback signal.

[0068] In summary, the display device in the embodiment can use a light source 12 composed of a single row of LED lamp beads to achieve the double-sided illumination effect of the double-sided display screen, thereby saving the cost of lamp beads. In addition, the illumination position of the light source 12 can be switched, so that the light source 12 can be used for illumination only on one side (the light entrance surface of the first light guide plate 111 or the light entrance surface of the second light guide plate 112) or on both sides (the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112). In combination with a light intensity sensor (brightness sensor) or other control methods (manual, remote, etc.), intelligent switching of the front light mode can be realized, thereby achieving energy saving and emission reduction.

[0069] Embodiment Two

[0070] In combination Figure 4 and Figure 5 As shown, the display device in the embodiment two is substantially the same as the display device in the embodiment one, and the difference lies in that the size of the light splitting structure 14 is different from that of the light splitting structure 14 in the embodiment one.

[0071] In the embodiment, asFigure 5 As shown, the width of the light-out mirror surface 1412 along the second direction b is equal to the thickness of the display structure 11 along the second direction b; the width of the reflective bottom surface 1423 along the second direction b is equal to the thickness of the double-sided display panel 113 along the second direction b.

[0072] It should be understood that when the width of the light-out mirror surface 1412 along the second direction b is equal to the thickness of the display structure 11 along the second direction b; the width of the reflective bottom surface 1423 along the second direction b is equal to the thickness of the double-sided display panel 113 along the second direction b, the display device can directly realize the double-sided display function by turning on the light source 12 for illumination.

[0073] In addition, if the single-sided display function of the display device is to be realized, the light splitting structure 14 is not connected with the driving member 13, that is, the light splitting structure 14 does not move synchronously with the light source 12, and the single-sided display function can also be realized by moving the light source 12 to the area of the light splitting structure 14 corresponding to the light-in surface of the first light guide plate 111 or the light-in surface of the second light guide plate 112. As shown, Figure 4 As shown, by moving the light source 12 to the central area of the light splitting structure 14, so that it simultaneously corresponds to the area of the light splitting structure 14 corresponding to the light-in surface of the first light guide plate 111 and the light-in surface of the second light guide plate 112, the double-sided display function can be realized.

[0074] For other structures and working principles of the display device, please refer to Example One, which will not be described here.

[0075] Example Three

[0076] In combination Figure 6 and Figure 7 As shown, the display device of the present embodiment is substantially the same as the display device of Example One, and the difference lies in the shapes of the first light guide plate 111 and the second light guide plate 112, which are different from those of the first light guide plate 111 and the second light guide plate 112 of Example One.

[0077] In the present embodiment, the first light guide plate 111 and the second light guide plate 112 each include a light-in portion 1121 and a main body portion 1122, the light-in portion 1121 is disposed on the side of the main body portion 1122 close to the light source 12 along the first direction a; wherein the thickness of the light-in portion 1121 along the second direction b is greater than the thickness of the main body portion 1122, and is greater than or equal to the width of the light-out mirror surface 1412 along the second direction b.

[0078] Among them, the surface of the light-in portion 1121 towards the light source structure is the light-in surface of the first light guide plate 111 or the second light guide plate 112.

[0079] It should be understood that the thickness of the light inlet portion 1121 along the second direction b is greater than the thickness of the body portion 1122, which can ensure the original light inlet amount of the first light guide plate 111 or the second light guide plate 112, reduce the thickness of the display structure 11, and finally make the display device thin.

[0080] For other structures and working principles of the display device, refer to Embodiment One or Embodiment Two, which will not be repeated here.

[0081] Embodiment Four

[0082] The embodiment provides a control method of a display device, which is used for controlling the display device in Embodiment One, Embodiment Two or Embodiment Three. The control method comprises the following steps.

[0083] The embodiment provides a control method of a display device, which is used for controlling the display device in Embodiment One, Embodiment Two or Embodiment Three. The control method comprises the following steps.

[0084] S1: acquiring display data of a first display surface 1131 and a second display surface 1132 in a double-sided display panel 113; wherein the first display surface 1131 and the second display surface 1132 can be used for picture display, and a light inlet surface of the first light guide plate 111 is used for guiding light into the first display surface 1131, and a light inlet surface of the second light guide plate 1121 is used for guiding light into the second display surface 1132.

[0085] It should be understood that the first display surface 1131 and the second display surface 1132 are two display surfaces of the double-sided display panel 113.

[0086] For example, first, it is judged by a brightness sensor or other sensors whether the first display surface 1131 and the second display surface 1132 are picture displayed, so as to acquire the display data of the first display surface 1131 and the second display surface 1132 in the display panel 113, and feed back the display data to the controller. The controller can realize remote control of the driving member 13 driving the light source 12 and the light splitting structure 14 to move in combination with remote communication.

[0087] S2: judging whether the first display surface 1131 and the second display surface 1132 exist picture display according to the display data.

[0088] For example, after the display data is fed back to the controller by the brightness sensor or other sensors, the controller can judge whether the first display surface 1131 and the second display surface 1132 exist picture display according to the display data.

[0089] S21: If one of the first display surface 1131 and the second display surface 1132 has picture display, and the other one does not have picture display, it is judged whether the display brightness of the first display surface 1131 or the second display surface 1132 corresponding to the picture display is enough: if the display brightness is enough, the light source 12 is turned off; if the display brightness is not enough, the driving member 13 is controlled to drive the light source 12 to move to the position of the light-incident surface corresponding to the first display surface 1131 or the second display surface 1132 whose display brightness is not enough, and the light source 12 is turned on.

[0090] It should be understood that if the first display surface 1131 has picture display, the second display surface 1132 does not have picture display, and the display brightness of the first display surface 1131 is not enough. At this time, the driving member 13 is controlled by the controller to drive the light source 12 and the light-splitting structure 14 to move, so that the light-reflecting surface 1412 of the light-splitting structure 14 is only arranged opposite to the light-incident surface of the first light guide plate 111, and is misaligned with the light-incident surface of the second light guide plate 112, and then the light source 12 is turned on to provide light for the light-incident surface of the first light guide plate 111, and further provide light for the picture display of the first display surface 1131.

[0091] If the first display surface 1131 does not have picture display, the second display surface 1132 has picture display, and the display brightness of the second display surface 1132 is not enough. At this time, the driving member 13 is controlled by the controller to drive the light source 12 and the light-splitting structure 14 to move, so that the light-reflecting surface 1412 of the light-splitting structure 14 is only arranged opposite to the light-incident surface of the second light guide plate 112, and is misaligned with the light-incident surface of the first light guide plate 111, and then the light source 12 is turned on to provide light for the light-incident surface of the second light guide plate 112, and further provide light for the picture display of the second display surface 1132.

[0092] S22: If both the first display surface 1131 and the second display surface 1132 have picture display, it is judged whether the display brightness of each of the first display surface 1131 and the second display surface 1132 is enough:

[0093] If the display brightness of both the first display surface 1131 and the second display surface 1132 is enough, the light source 12 is turned off.

[0094] If the display brightness of one of the first display surface 1131 and the second display surface 1132 is not enough, the driving member 13 is controlled by the controller to drive the light source 12 to move to the position of the light-incident surface corresponding to the first display surface 1131 or the second display surface 1132 whose display brightness is not enough, and the light source 12 is turned on.

[0095] It should be understood that if the display brightness of the first display surface 1131 is not enough, which is detected by the brightness sensor or other sensors. At this time, the light source 12 and the light splitting structure 14 are driven to move by the driving member 13 controlled by the controller, so that the light exit mirror surface 1412 of the light splitting structure 14 is only arranged opposite to the light entrance surface of the first light guide plate 111, and is misaligned with the light entrance surface of the second light guide plate 112. Then the light source 12 is turned on to provide light for the light entrance surface of the first light guide plate 111, and then provide light for the picture display of the first display surface 1131.

[0096] If the display brightness of the second display surface 1132 is not enough, which is detected by the brightness sensor or other sensors. At this time, the light source 12 and the light splitting structure 14 are driven to move by the driving member 13 controlled by the controller, so that the light exit mirror surface 1412 of the light splitting structure 14 is only arranged opposite to the light entrance surface of the second light guide plate 112, and is misaligned with the light entrance surface of the first light guide plate 111. Then the light source 12 is turned on to provide light for the light entrance surface of the second light guide plate 112, and then provide light for the picture display of the second display surface 1132.

[0097] If the display brightness of both the first display surface 1131 and the second display surface 1132 is not enough, which is detected by the brightness sensor or other sensors. Then the light source 12 is driven to move to the position corresponding to the light entrance surface of the first display surface 1131 and the light entrance surface of the second display surface 1132 by the driving member 13 controlled by the controller (i.e. the position corresponding to the light entrance surface of the first light guide plate 111 and the light entrance surface of the second light guide plate 112), and the light source 12 is turned on. S23: If there is no picture display on both the first display surface 1131 and the second display surface 1132, the light source is turned off.

[0098] For other structures and working principles of the display device, please refer to Embodiment 1 to Embodiment 3, which will not be repeated here.

[0099] In the present application, unless otherwise explicitly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0100] Furthermore, the terms "first", "second", "third", etc. are used herein for descriptive purposes only and cannot be construed as indicating or implying relative importance or an ordered ranking such as numerically first, second and third. By way of example, a "first" feature can implicitly or explicitly include one or more of the "second" or "third" features. The meaning of "a", "an", and "the" includes singular and plural referents. Furthermore, descriptions of certain embodiments or examples do not imply that the disclosure is limited to that embodiment or example.

Claims

1. A display device, comprising a display structure and a light source structure opposite to the display structure in a first direction, the display structure including a first light guide plate and a second light guide plate opposite to each other in a second direction, and a double-sided display panel disposed between the first light guide plate and the second light guide plate, wherein the surface of the first light guide plate and the second light guide plate facing the double-sided display panel is a light-emitting surface, and the surface of the first light guide plate and the second light guide plate facing the light source structure is a light-incident surface, and the second direction intersects the first direction; characterized in that, The light source structure includes a driving element, a light source, and a beam splitting structure. The light source is connected to the driving element, and the beam splitting structure is located between the display structure and the light source. The beam splitting structure is connected to the driving element. The light source is configured to move along the second direction under the drive of the driving element, and the beam splitting structure is configured to move synchronously with the light source to face the light incident surface of at least one of the first light guide plate and the second light guide plate. The beam-splitting structure includes a prism structure and a reflective structure. The reflective structure is connected to the prism structure and is disposed along the second direction corresponding to the middle region of the prism structure. The prism structure includes an incident light mirror and an exit light mirror arranged opposite to each other, as well as a first tilted mirror and a second tilted mirror arranged opposite to each other. The first tilted mirror and the second tilted mirror are both tilted between the incident light mirror and the exit light mirror. The exit light mirror is arranged close to the display structure, and the incident light mirror is arranged on the side of the exit light mirror away from the display structure and close to the light source. The reflective structure is located between the first tilted mirror and the second tilted mirror, and is spaced apart from the first tilted mirror and the second tilted mirror. The reflective structure includes a first reflective side facing the first tilted mirror, a second reflective side facing the second tilted mirror, and a reflective bottom surface connected between the first reflective side and the second reflective side. The side of the first reflective side away from the reflective bottom surface is connected to the side of the second reflective side away from the reflective bottom surface. The width of the light-emitting mirror along the second direction is less than or equal to the width of the first light guide plate or the second light guide plate along the second direction, and greater than the width of the double-sided display panel along the second direction. The width of the reflective bottom surface along the second direction is equal to the width of the double-sided display panel along the second direction.

2. The display device according to claim 1, characterized in that, The distance between the first tilted mirror and the second tilted mirror gradually increases from the side of the incident mirror facing the exiting mirror; The first tilted mirror, the second tilted mirror, and the incident light mirror all form a first tilt angle, the angle of which is greater than or equal to 30° and less than or equal to 80°.

3. The display device according to claim 2, characterized in that, The reflective structure is spaced apart from the incident mirror, with the distance between them being greater than or equal to 1 mm and less than or equal to 5 mm.

4. The display device according to claim 2, characterized in that, A second inclined angle is formed between the first reflective side and the second reflective side, and the angle range of the second inclined angle is greater than or equal to 5° and less than or equal to 30°.

5. The display device according to claim 1, characterized in that, Both the first light guide plate and the second light guide plate include a light-incoming portion and a main body portion. The light-incoming portion is disposed along the first direction on the side of the main body portion near the light source. The surface of the light-incoming portion facing the light source structure is the light-incident surface of the first light guide plate or the second light guide plate. The width of the light-inlet portion along the second direction is greater than the width of the main body portion, and is greater than or equal to the width of the light-outlet mirror along the second direction.

6. The display device according to any one of claims 1-5, characterized in that, The driving component includes a drive motor, a limiting block, a connecting rod, and a sliding block; wherein the connecting rod is rotatably connected between the drive motor and the limiting block; the sliding block is connected to the connecting rod and can reciprocate between the drive motor and the limiting block along the second direction under the rotation of the connecting rod; the light source is connected to the sliding block and moves synchronously with the sliding block; and / or, The display device further includes a brightness sensor and a controller. The brightness sensor and the driving component are both connected to and controlled by the controller. The brightness sensor is used to detect the display brightness of the double-sided display panel and feed back a signal to the controller. The controller controls the driving component to drive the light source according to the feedback signal.

7. A method for controlling a display device, used to control the display device as described in any one of claims 1-6, the control method comprising: The display data of the first display surface and the second display surface in the dual-sided display panel are obtained; wherein, both the first display surface and the second display surface can be used for image display, and the light-incident surface of the first light guide plate is used to guide light into the first display surface, and the light-incident surface of the second light guide plate is used to guide light into the second display surface; Based on the displayed data, determine whether there is an image displayed on the first display surface and the second display surface: If one of the first display surface and the second display surface displays an image while the other does not, then the display brightness of the first display surface or the second display surface that displays an image is determined: if the display brightness is sufficient, then the light source is turned off; if it is insufficient, then the driving component is controlled to move the light source to a position facing the light-incident surface corresponding to the first display surface or the second display surface with insufficient display brightness, and then the light source is turned on. If both the first display surface and the second display surface are displaying images, it is determined whether the display brightness of each of the first display surface and the second display surface is sufficient: if both are sufficient, the light source is turned off; if the display brightness of one of the first display surface and the second display surface is insufficient, the driving component is controlled to move the light source to a position facing the light-incident surface corresponding to the first display surface or the second display surface with insufficient display brightness, and the light source is turned on; if the display brightness of both the first display surface and the second display surface is insufficient, the driving component is controlled to move the light source to a position facing both the light-incident surface corresponding to the first display surface and the light-incident surface corresponding to the second display surface, and the light source is turned on. If neither the first display surface nor the second display surface displays an image, then the light source is turned off.

Images