Display device

Abstract

A display device is disclosed. The display device of the present disclosure comprises: a display panel having a light-emitting region and a light-transmitting region; a plurality of plates located at the rear of the display panel, extending in one direction and arranged sequentially in the other direction; and a side frame extending along the periphery of the display panel and each of the plurality of plates being rotatably coupled about a rotation axis parallel to the one direction, wherein the plurality of plates may be rotated sequentially along the other direction and may open and close the rear of the display panel, and the plurality of plates may comprise: a first plate; and a second plate spaced apart from the first plate in the other direction, wherein the rotation start of the second plate may be later than the rotation end of the first plate.

Description

Technology Field

[0001] The present disclosure relates to a display device. More specifically, the present disclosure relates to a display device having a transparent display panel. Background Technology

[0002] As the information society develops, the demand for display devices is increasing in various forms. In response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electroluminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) have recently been researched and are being used.

[0003] Among these, the LCD panel is equipped with a TFT substrate and a color substrate facing each other with a liquid crystal layer in between, and can display an image using light provided from a backlight unit. Additionally, the OLED panel can display an image by depositing a self-emissive organic layer on a substrate having a transparent electrode formed thereon.

[0004] Recently, much research is being conducted on transparent display panels that not only display images to the user but also allow the user to see behind the display panel. The problem to be solved

[0005] The present disclosure aims to solve the aforementioned problems and other problems.

[0006] Another objective may be to provide a display device equipped with a transparent display panel.

[0007] Another purpose may be to provide a structure that opens and closes the rear of the transparent display panel.

[0008] Another objective may be to provide a method for controlling an image output in the light-transmitting mode or light-blocking mode of a transparent display panel. means of solving the problem

[0009] According to one aspect of the present disclosure for achieving the above or other purposes, a display device may include: a display panel having a light-emitting region and a light-transmitting region; a plurality of plates located at the rear of the display panel, extending in one direction and arranged sequentially in the other direction; and a side frame extending along the perimeter of the display panel and each of the plurality of plates may be rotatably coupled about a rotation axis parallel to the one direction, wherein the plurality of plates may be rotated sequentially along the other direction and may open and close the rear of the display panel, and the plurality of plates may include: a first plate; and a second plate spaced apart from the first plate in the other direction, wherein the rotation start of the second plate may be later than the rotation end of the first plate. Effects of the invention

[0010] The effects of the display device according to the present disclosure are described as follows.

[0011] According to at least one of the embodiments of the present disclosure, a display device having a transparent display panel can be provided.

[0012] According to at least one of the embodiments of the present disclosure, a structure for opening and closing the rear of a transparent display panel can be provided.

[0013] According to at least one of the embodiments of the present disclosure, a method for controlling an image output in a light-transmitting mode or a light-blocking mode of a transparent display panel can be provided.

[0014] Further scopes of the applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, should be understood as being given merely as examples. Brief explanation of the drawing

[0015] FIGS. 1 to 49 are drawings illustrating examples of display devices according to embodiments of the present disclosure. Specific details for implementing the invention

[0016] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0017] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0018] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0019] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0020] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0021] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0022] In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0023] The directional indications of Up (U), Down (D), Left (Le), Right (Ri), Front (F), and Rear (R) shown in the drawings are for convenience of explanation only and do not limit the technical concepts disclosed in this specification.

[0024] Referring to FIG. 1, the display device (1) may include a display (10), a side frame (20), and a housing (90). The display (10) may display an image. The side frame (20) may extend along the perimeter of the display (10). The housing (90) may be located below the display (10) and the side frame (20).

[0025] The display device (1) may include a first long side (LS1, first long side), a second long side (LS2, second long side) facing the first long side (LS1), a first short side (SS1, first short side) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (SS2, second short side) facing the first short side (SS1). Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are shown and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it is also possible for the lengths of the first and second long sides (LS1, LS2) to be approximately the same as the lengths of the first and second short sides (SS1, SS2).

[0026] The long side (LS1, LS2, long side) and short side (SS1, SS2, short side) of the display device (1) can be formed on the side frame (20).

[0027] The direction parallel to the long side (LS1, LS2) of the display device (1) can be called the left-right direction. The direction parallel to the short side (SS1, SS2) of the display device (1) can be called the up-down direction. The direction perpendicular to the long side (LS1, LS2) and short side (SS1, SS2) of the display device (1) can be called the front-back direction.

[0028] The direction in which the display device (1) displays an image can be called the front (F, z), and the opposite direction can be called the rear (R). The first short side (SS1) can be called the left (Le, x). The second short side (SS2) can be called the right (Ri). The first long side (LS1) can be called the top (U, y). The second long side (LS2) can be called the bottom (D).

[0029] Hereinafter, a display panel using an Organic Light Emitting Diode (OLED) is described as an example, but the display panels applicable to the present disclosure are not limited thereto.

[0030] Referring to FIG. 2, the control unit (110) of the display device (1) can control the operation of the display device (1). The control unit (110) can be electrically connected to the components of the display device.

[0031] The display panel (11), main board (11m), power supply board (11p), and timing controller board (11c) can be installed in the internal space of the housing (90) and can be electrically connected to the control unit (110). The main board (11m) can control the display device (1). The control unit (110) may be implemented by the main board (11m) or may be a higher-level control unit that controls the main board (11m), etc. The power supply board (11p) can provide power to each component of the display device (1). The timing controller board (11c) can provide a video signal to the display panel (11).

[0032] The motor (32) and sensor (39b) of the blind assembly (30) can be electrically connected to the control unit (110). The control unit (110) can control the operation of the motor (32), namely the amount of rotation (rotation angle), the direction of rotation, and the rotation speed. This motor (32) may be a stepper motor. The control unit (110) can detect the operation of the motor (32) based on information obtained from the sensor (39b).

[0033] A speaker (SPK) can be installed in the internal space of a housing (90) and can be electrically connected to a control unit (110). A speaker hole (not shown) can be formed in the housing (90), and the speaker (SPK) can provide sound through the speaker hole.

[0034] The communication unit (Cm) can transmit information of the display device (1) to an external device, or transmit various information or signals from an external device to the display device (1). The communication unit (Cm) can communicate with a remote control device, a mobile terminal, a wired / wireless router, or other communication infrastructure (e.g., a server). For example, the communication unit (Cm) can perform wireless communication with an external device using communication technologies such as IEEE 802.11 WLAN, IEEE 802.15 WPAN, UWB, Wi-Fi, Zigbee, Z-wave, and Blue-Tooth.

[0035] The memory (11r) may be electrically connected to the control unit (110). The memory (11r) may store basic data for the display device (1) (e.g., basic specification information for each component of the display device, such as display resolution, brightness, sound output value, number and location of plates of the blind assembly), data and programs for controlling the operation of the display device (1), data input from the outside, or data processed by the control unit (110). For example, the memory (11r) may store information regarding the operation of the motor (32). For example, the memory (11r) may include ROM, RAM, EPROM, a flash drive, or a hard drive. For example, the memory (11r) may be classified as a sub-component of the control unit (110).

[0036] Referring to FIG. 3, the display (10) may include a display panel (11), a first interface unit (11a), a second interface unit (11b), a timing controller (11c), a gate driver (11d), a data driver (11e), a memory (11f), a processor (11g), a power supply unit (11h), and a current detection unit (11i). The display panel (11) may be an OLED (Organic Light Emitting Diode) panel.

[0037] The first interface unit (11a) can receive a first DC power (V1) from a power supply unit outside the display (10), and the first DC power (V1) can be provided to the operation of the power supply unit (11h) and the timing controller (11c).

[0038] The second interface unit (11b) can receive a second DC power supply (V2) from a power supply unit outside the display (10), and the second DC power supply (V2) can be provided to the data driving unit (11e).

[0039] The timing controller (11c) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the video signal (Vd) input to the first interface unit (11a). For example, the first interface unit (11a) can convert the video signal (Vd) and output a converted video signal (Va1), and the timing controller (11c) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the converted video signal (Vd). This data driving signal (Sda) may be a driving signal for subpixels of the display panel (11). Additionally, the timing controller (11c) can further output a control signal (Cs) to the gate driving unit (11d).

[0040] The gate driving unit (11d) and the data driving unit (11e) can provide a scanning signal and an image signal to the display panel (11) through the gate line (GL) and the data line (DL) according to the gate driving signal (Sga) and the data driving signal (Sda) of the timing controller (11c). Accordingly, the display panel (11) can display an image.

[0041] The power supply unit (11h) can provide various power to the gate driving unit (11d), the data driving unit (11e), and the timing controller (11c), etc.

[0042] The current detection unit (11i) can detect the current flowing through the subpixel of the display panel (11). The detected current can be input to the processor (11g) for cumulative current calculation. The calculated cumulative current can be stored in memory (11f).

[0043] The processor (11g) can perform various controls within the display (10). For example, the processor (11g) can control the gate driver (11d), the data driver (11e), and the timing controller (11c).

[0044] Referring to FIGS. 4 and 5, the display panel (11) may include a plurality of scan lines (Scan 1 to Scan n) and a plurality of data lines (R1, G1, B1, W1 to Rm, Gm, Bm, Wm). The plurality of data lines (R1, G1, B1, W1 to Rm, Gm, Bm, Wm) may intersect the plurality of scan lines (Scan 1 to Scan n). A subpixel may be defined in the intersection area of ​​the scan lines and the data lines. A pixel may be a hold-type element that continues to emit light from an organic light-emitting layer (OLED) during a unit frame image after a scan signal is applied. For example, the pixel may have RGBW subpixels. As another example, the pixel may have RGB subpixels.

[0045] The circuit (CRTm) of the subpixel is active and may include a scan switching element (SW1), a storage capacitor (Cst), a driving switching element (SW2), and an organic light-emitting layer (OLED).

[0046] The scan switching element (SW1) can be turned on according to a scan signal (Vscan) input from a scan line. When the scan switching element (SW1) is turned on, the scan switching element (SW1) can transmit a data signal (Vdata) input from a data line to one end of a storage capacitor (Cst) or to the gate terminal of a driving switching element (SW2).

[0047] A storage capacitor (Cst) can be provided between the gate terminal and the source terminal of a driving switching element (SW2), and can store the difference between the data signal level transmitted to one end of the storage capacitor (Cst) and the DC power supply (VDD) level transmitted to the other end of the storage capacitor (Cst).

[0048] For example, if the data signal has different levels according to the Pulse Amplitude Modulation (PAM) method, the power level stored in the storage capacitor (Cst) may vary depending on the level difference of the data signal (Vdata). As another example, if the data signal has different pulse widths according to the Pulse Width Modulation (PWM) method, the power level stored in the storage capacitor (Cst) may vary depending on the pulse width difference of the data signal (Vdata).

[0049] The driving switch element (SW2) can be turned on according to the power level stored in the storage capacitor (Cst). When the driving switching element (SW2) is turned on, a driving current (IOLED) proportional to the stored power level can flow to the organic light-emitting layer (OLED). Accordingly, the organic light-emitting layer (OLED) can perform a light-emitting operation.

[0050] The organic light-emitting layer (OLED) may have an RGBW light-emitting layer (EML) corresponding to a subpixel, and may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), or an electron injection layer (EIL), and may also include a hole blocking layer (HBL), etc.

[0051] Meanwhile, FIG. 5 illustrates a p-type MOSFET as the scan switching element (SW1) and the driving switching element (SW2), but switching elements such as an n-type MOSFET, JFET, IGBT, or SIC may also be used.

[0052] Referring to FIG. 6, a pixel may include a light-emitting region and a transparent region. RGBW subpixels may be arranged vertically in the light-emitting region, and the transparent region, which has no subpixels, may be arranged next to the light-emitting region.

[0053] Accordingly, a display panel (11) having multiple pixels can not only display an image but also allow light to pass through. The display panel (11) may be referred to as a transparent display panel or a transparent OLED panel.

[0054] Referring to FIG. 7, a pixel may include a light-emitting region and a transparent region. In the light-emitting region, RGW or BGW subpixels may be arranged adjacent to each other, and the transparent region, which has no subpixels, may be arranged next to the light-emitting region.

[0055] Accordingly, a display panel (11) having multiple pixels can not only display an image but also allow light to pass through. The display panel (11) may be referred to as a transparent display panel or a transparent OLED panel.

[0056] Referring to FIGS. 8 and 9, the display panel (11) can output an image by dividing the image into multiple pixels and matching the color, brightness, and saturation for each pixel. The display panel (11) can be divided into an active area where the image is displayed and a de-active area where the image is not displayed. The display panel (11) can generate light corresponding to the color red (R), green (G), or blue (B) according to a control signal.

[0057] The source PCB (14) may be adjacent to the lower edge of the display panel (11) and may extend along the lower edge. The source PCB (14) may be electrically connected to the display panel (11) via a source chip on film (15). The source PCB (14) may be electrically connected to a timing controller board (11c, see FIG. 1 and 2) via a cable (not shown), such as a flexible flat cable (FFC).

[0058] A transparent panel (13) may be positioned in front of a display panel (11). The transparent panel (13) may be made of glass made of a transparent material. An adhesive film (12) may be positioned between the display panel (11) and the transparent panel (13) and may be bonded to the display panel (11) and the transparent panel (13). The adhesive film (12) may be an OCA (Optically Clear Adhesive) film.

[0059] For example, the size of the adhesive film (12) may correspond to the size of the display panel (11) and may be smaller than the size of the transparent panel (13).

[0060] Meanwhile, the display panel (11), adhesive film (12), and transparent panel (13) can be collectively referred to as the display (10).

[0061] Referring to FIGS. 9 and 10, the bottom part (21) of the side frame (20) may be adjacent to the lower edge of the display (10) and may extend along the lower edge. A slit (21P) may be formed by penetrating the bottom part (21) in the vertical direction and may extend along the length of the bottom part (21). A transparent panel (13) may penetrate the slit (21P), and a display panel (11) may be positioned above the bottom part (21).

[0062] The left part (22) of the side frame (20) may be adjacent to the left side of the display (10) and may extend along said left side. The bottom of the left part (22) may be joined to the left end of the bottom part (21). The left groove (22g) may be formed on the inner side of the left part (22) and may extend along the length of the left part (22). The left groove (22g) may be located closer to the front end than the rear end of the left part (22). The left side of the display (10) may be inserted into the left groove (22g).

[0063] The right part (23) of the side frame (20) may be adjacent to the right side of the display (10) and may extend along the right side. The bottom of the right part (23) may be joined to the right end of the bottom part (21). The right groove (23g) may be formed on the inner side of the right part (23) and may extend along the length of the right part (23). The right groove (23g) may be located closer to the front end than the rear end of the right part (23). The right side of the display (10) may be inserted into the right groove (23g).

[0064] A bottom hole (21h) can be formed by penetrating the bottom part (21) in the vertical direction. The bottom hole (21h) can be spaced rearward from the display panel (11). Multiple bottom holes (21h) can be spaced apart from each other in the longitudinal direction of the bottom part (21).

[0065] Referring to FIGS. 11 and 12, the top part (24) of the side frame (20) may be adjacent to the upper edge of the display (10) and may extend along the upper edge. The left end of the top part (24) may be connected to the top of the left part (22), and the right end of the top part (24) may be connected to the top of the right part (23). A top groove (24g) may be formed on the inner side of the top part (24) and may extend along the length of the top part (24). The top groove (24g) may be located closer to the front end than the rear end of the top part (24). The upper edge of the display (10) may be inserted into the top groove (24g). Accordingly, the side frame (20) may have a square frame shape and may cover the perimeter of the display panel (11).

[0066] The top hole (24h) may be a groove formed on the inner side of the top part (24) or may be formed by penetrating the top part (24) in the vertical direction. In the vertical direction, the top hole (24h) may be aligned with the bottom hole (21h, see FIG. 10). Multiple top holes (24h) may be spaced apart from each other in the longitudinal direction of the top part (24).

[0067] The blind assembly (30) may include a plate (31), a motor (32), a drive pulley (33), a wheel (34), a driven pulley (35), and a belt (36). Here, the motor (32), the drive pulley (33), the wheel (34), the driven pulley (35), and the belt (36) may be collectively referred to as a drive module.

[0068] The plate (31) may be located at the rear of the display panel (11) and may be located on the inner side of the side frame (20). The plate (31) may be extended vertically. The plate (31) may be referred to as a blind (31) or a blade (31).

[0069] The bottom of the plate (31) may be located on or adjacent to the upper surface of the bottom part (21). The bottom pin (31B) of the plate (31) may protrude downward from the bottom of the plate (31), may pass through the bottom hole (21h, see FIG. 10) of the bottom part (21), and may be rotatably coupled to the bottom part (21).

[0070] The top of the plate (31) may be located on or adjacent to the lower surface of the top part (24). The top pin (31T) of the plate (31) may protrude upward from the top of the plate (31), penetrate the top hole (24h) of the top part (24), and may be rotatably coupled to the top part (24).

[0071] The bottom pin (311) and the top pin (312) can be aligned with each other in the longitudinal direction, i.e., the vertical direction, of the plate (31). The rotation axis of the plate (31) can be coaxial with the center axis of the bottom pin (311) and the top pin (312).

[0072] Multiple plates (31) can be arranged sequentially from the left part (22) toward the right part (23) and can be adjacent to each other. Each of the multiple plates (31) can be rotatably coupled to the bottom part (21) and the top part (24). Among the multiple plates (31), the rotation axis of one plate can be parallel to the rotation axis of another plate.

[0073] The motor (32) may be located below the bottom part (21). The motor (32) may be adjacent to the left part (22) or the right part (23). The motor (32) may provide rotational force. The motor (32) may be an electric motor capable of adjusting the rotational direction, rotational angle, and rotational speed, and may be equipped with a rotation axis (32a) parallel to the vertical direction.

[0074] The drive pulley (33) may be orthogonal to the rotation axis (32a) of the motor (32) and may be fixed to the rotation axis (32a). For example, the drive pulley (33) may be located below the left part (22), and the motor (32) may be opposite the left part (22) with respect to the drive pulley (33). In this case, the driven pulley (35) may be located below the right part (23). A belt (36) may be engaged with the drive pulley (33) and the driven pulley (35). The belt (36) may be a timing belt.

[0075] The wheel (34) may be positioned between the driving pulley (33) and the driven pulley (35) and may be adjacent to the inner circumference of the belt (36). The wheel (34) may be positioned opposite the plate (31) with respect to the bottom part (21) and may be fixed to the bottom pin (311) of the plate (31). The bottom pin (311) of each of the plurality of plates (31) may be fixed to each of the plurality of wheels (34) and may provide a rotation axis for each of the plurality of wheels (34). For example, the wheel (34) may be formed as one body with the end of the bottom pin (311). Accordingly, the wheel (34) and the plate (31) may rotate together.

[0076] Also, the wheel (34) may be a cross-shaped wheel, a T-shaped wheel, or an L-shaped wheel.

[0077] Referring to FIG. 13, the aforementioned motor (32), drive pulley (33), wheel (34), driven pulley (35), and belt (36) can be accommodated in the internal space (90S) of the housing (90).

[0078] An opening (90P) may be formed in the top part (90T) of the housing (90) and may pass through a part of the bottom part (21). A mount plate (91) may protrude horizontally from the inside of the rear part (90R) of the housing (90) and may be positioned closer to the top part (90T) than to the bottom part (90B) of the housing (90). A motor (32) may be mounted on the lower surface of the mount plate (91), and a drive pulley (33), a wheel (34), a driven pulley (35), and a belt (36) may be positioned on the mount plate (91).

[0079] The disc indicator (39) may be adjacent to the end of the rotation axis (32a) of the motor (32) and may be fixed to the rotation axis (32a). Multiple holes (39a) may be formed in the disc indicator (39) and may be spaced apart from each other in the circumferential direction of the disc indicator (39).

[0080] The sensor (39b) may be adjacent to the disc indicator (39) and may be fixed to the mount plate (91). The sensor (39b) may be a photo sensor and may have a horseshoe shape. The light-emitting part and the light-receiving part of the sensor (39b) may face each other with respect to the disc indicator (39). That is, the disc indicator (39) may rotate and pass between the light-emitting part and the light-receiving part according to the rotation of the rotation axis (132a), and the light from the light-emitting part may pass through the hole (39a) or be blocked by the disc indicator (39). Accordingly, the sensor (39b) may detect the number of rotations and / or amount of rotation of the motor (132).

[0081] Referring again to FIG. 11, the first magnet (24m) and the second magnet (24n) may be formed around the top hole (24h). Alternatively, the first magnet (24m) and the second magnet (24n) may be formed around the bottom hole (21h, see FIG. 10), or around the top hole (24h) and the bottom hole (21h), respectively.

[0082] The first magnet (24m) may be located between the top hole (24h) and the display panel (11). The second magnet (24n) may be spaced 90 degrees from the first magnet (24m) with respect to the top hole (24h). These first magnet (24m) and second magnet (24n) may form a group, and each group may be formed around each of the multiple top holes (24h).

[0083] The plate (31) may contain a magnetic substance such as iron (Fe). A magnetic attraction may act between the plate (31) and the magnet (24m, 24n).

[0084] Referring to FIGS. 14 through 16, a projection (360) may be formed on the inner surface of the belt (36). The projection (360) may protrude further inward toward the belt (36) than the portion of the belt (36) that engages with the drive pulley (33) (i.e., the inner surface of the belt (36)). A plurality of wheels (34) may be spaced apart from the inner surface of the belt (36). The plurality of wheels (34) may be positioned ahead of the projection (360) and may be located on the path of movement of the projection (360) corresponding to the movement of the belt (36).

[0085] The first plate (31a), second plate (31b), third plate (31c), fourth plate (31d), fifth plate (31e), sixth plate (31f), seventh plate (31g), eighth plate (31h), ninth plate (31i), tenth plate (31j), eleventh plate (31k), twelfth plate (31l), thirteenth plate (31m), fourteenth plate (31n), fifteenth plate (31o), sixteenth plate (31p), seventeenth plate (31q), eighteenth plate (31r), nineteenth plate (31s), twenty-fifth plate (31t), twenty-fifth plate (31u), twenty-twoth plate (31v), twenty-threeth plate (31w), twenty-fourth plate (31x), and twenty-fifth plate (31y) can be arranged sequentially from the left part (22) to the right part (23).

[0086] Multiple plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) can be arranged parallel to each other. The thickness direction of the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) may be parallel to the left-right direction. A space may be formed between a plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y). The angle of the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) may be 0 degrees. At this time, the projection (360) may be located between the 25th wheel (34y) fixed to the 25th plate (31y) and the driven pulley (35, see FIG. 11).

[0087] The 25th plate (31y) may be closest to the right part (23), and the upper edge of the 25th plate (31y) may face the first magnet (24my) and be magnetically coupled thereto. The 24th plate (31x) may face the right part (23) with respect to the 25th plate (31y), and the upper edge of the 24th plate (31x) may face the first magnet (24mx) and be magnetically coupled thereto. The 23rd plate (31w) may face the 25th plate (31y) with respect to the 24th plate (31x), and the upper edge of the 23rd plate (31w) may face the first magnet (24mw) and be magnetically coupled thereto.

[0088] Likewise, the first to 22 plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v) can be magnetically coupled to the first magnet (24m, see FIG. 11). Accordingly, the plurality of first magnets (24m) can fix the positions of the plurality of plates (31).

[0089] Referring to FIGS. 17 to 19, the wheel (34) may be a cross-shaped wheel. Alternatively, the wheel (34) may be a T-shaped wheel or an L-shaped wheel.

[0090] When the drive pulley (33) rotates clockwise (CW, see FIG. 12), depending on the movement of the belt (36) (see arrow in FIG. 19), the projection (360) may strike the 25th wheel (34y) fixed to the 25th plate (31y) and rotate the 25th wheel (34y), and may come closer to the 24th wheel (24x) fixed to the 24th plate (31x). At this time, the 25th plate (31y) may be rotated more than 45 degrees by the projection (360) and may be rotated further by being attracted by the magnetic force of the second magnet (24ny). As a result, the 25th plate (31y) may be rotated from 0 degrees to 90 degrees.

[0091] Accordingly, the upper edge of the 25th plate (31y) faces the second magnet (24ny) and can be magnetically coupled to it (see FIG. 21). Also, the second magnet (24ny) can fix the position of the 25th plate (31y).

[0092] Referring to FIGS. 20 through 22, as the drive pulley (33) continues to rotate clockwise (CW, see FIG. 12), the projection (360) may be positioned between the 24th wheel (34x) fixed to the 24th plate (31x) and the 23rd wheel (34w) fixed to the 23rd plate (31w), depending on the movement of the belt (36) (see arrow in FIG. 22). That is, the projection (360) may rotate the 25th wheel (34y) and the 24th wheel (34x), and as a result, the 25th plate (31y) and the 24th plate (31x) may be rotated from 0 degrees to 90 degrees.

[0093] Accordingly, the upper edge of the 25th plate (31y) may face the second magnet (24ny) and be magnetically coupled thereto, and the upper edge of the 24th plate (31x) may face the second magnet (24nx) and be magnetically coupled thereto. Also, the second magnet (24ny, 24nx) can fix the positions of the 25th plate (31y) and the 24th plate (31x).

[0094] Referring to FIGS. 23 to 25, as the drive pulley (33) continues to rotate clockwise (CW, see FIG. 12), the projection (360) may be positioned between the first wheel (34a) fixed to the first plate (31a) and the drive pulley (33, see FIG. 12) according to the movement of the belt (36) (see arrow in FIG. 22). That is, the projection (360) may have rotated the wheels of a plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y), and as a result, the wheels of a plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) can be rotated from 0 to 90 degrees.

[0095] Accordingly, the phase sides of all plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) face the second magnet (24n) and can be magnetically coupled to it. Also, the second magnet (24n) can fix the positions of all plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y).

[0096] Referring to FIGS. 26 through 28, when the drive pulley (33) rotates counterclockwise (CCW, see FIG. 12) from the state of FIG. 25, the projection (360) may be positioned between the second wheel (34b) fixed to the second plate (31b) and the third wheel (34c) fixed to the third plate (31c), depending on the movement of the belt (36) (see arrow in FIG. 28). That is, the projection (360) may have rotated the first wheel (34a) fixed to the first plate (31a) and the second wheel (34b) fixed to the second plate (31b). At this time, the first plate (31a) and the second plate (31b) may be rotated more than 45 degrees by the projection (360) and may be further rotated by being attracted by the magnetic force of the first magnet (24ma, 24mb). As a result, the first plate (31a) and the second plate (31b) can be rotated from 90 degrees to 0 degrees.

[0097] As described above, the upper edge of the first plate (31a) may face the first magnet (24ma) and be magnetically coupled thereto, and the upper edge of the second plate (31b) may face the second magnet (24mb) and be magnetically coupled thereto. In addition, the first magnet (24ma, 24mb) may fix the positions of the first plate (31a) and the second plate (31b).

[0098] Referring to FIG. 29, the sum of the widths of the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) may be substantially equal to the distance (L1) between the left part (22) and the right part (23).

[0099] That is, when the angle of the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) is 0 degrees (see FIG. 14), the rear of the display (10) is such that the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, It can be opened to the rear through the gaps between 31r, 31s, 31t, 31u, 31v, 31w, 31x, and 31y.

[0100] Also, when the angle of the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y) is 90 degrees (see FIG. 23), the rear of the display (10) is such that the plurality of plates (31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31i, 31j, 31k, 31l, 31m, 31n, 31o, 31p, 31q, It can be covered by 31r, 31s, 31t, 31u, 31v, 31w, 31x, 31y).

[0101] Meanwhile, considering the function of the plates that open and close the rear of the display panel (11), the width of the plates can increase as the number of plates provided in the display device decreases. In other words, as the number of plates provided in the display device increases, the width of the plates can decrease, and the overall thickness (t1) of the display device can decrease.

[0102] Meanwhile, the thinner the plates are, the less visible the plates opening the rear of the display panel (11) will be to the user in front of the display (10).

[0103] Referring to FIGS. 30 and 31, the plate (31) may have a parallelogram cross-section. If the angle of the plates (31) is 90 degrees (see FIG. 23), among the adjacent plates (31), a part of one may overlap with a part of the other in the front and back.

[0104] Accordingly, if the angle of the plates (31) is 90 degrees, the user in front of the display (10) may not be able to perceive the gap between the plates (31).

[0105] Referring to FIG. 32 from top to bottom, as the drive pulley (33) rotates clockwise (CW, see FIG. 12), the plurality of plates (31) can be rotated stepwise from 0 degrees to 90 degrees in the direction from the right part (23) toward the left part (22). Also, the rear of the display panel (11) can be closed stepwise from the right part (23) toward the left part (22).

[0106] Referring to FIG. 32 from bottom to top, as the drive pulley (33) rotates counterclockwise (CCW, see FIG. 12), the plurality of plates (31) can be rotated stepwise from 90 degrees to 0 degrees in the direction from the left part (22) to the right part (23). Also, the rear of the display panel (11) can be opened stepwise from the left part (22) to the right part (23).

[0107] That is, the end point of rotation of the plate that rotates first among the plates (31) may be earlier than the start point of rotation of the plate that rotates later.

[0108] Referring to FIGS. 32 and 33, a control unit (110, see FIG. 2) of a display device may be electrically connected to the aforementioned motor (32, see FIG. 13) and sensor (39b, see FIG. 13). The control unit (110) may detect the rotation direction and rotation angle of the motor (32) based on information obtained from the motor (32) and sensor (39b) (S20). Here, the rotation direction and rotation angle of the motor (32) are the same as the rotation direction and rotation angle of the aforementioned drive pulley (33, see FIG. 12).

[0109] After S20, the control unit (110) can determine whether the angle of all plates (31) is 0 degrees (S21). Here, if the angle of all plates (31) is 0 degrees, the rear of the display (10) is opened to the rear through the gap between the plates (31).

[0110] If it is determined that the angle of all plates (31) is 0 degrees in S21 (S21: Yes), the control unit (110) can determine that the mode of the display (10) is a light-emitting mode (S22, see upper figure of FIG. 32). For example, the display (10) may not display an image, and a user in front of the display (10) can see the back of the display (10) through the plates (31). For another example, the display (10) may display an image, and a user in front of the display (10) can see the image and the back of the display (10).

[0111] At this time, one side of each of the plates (31) facing the display (10) may be painted white, and the vertical stripes of the plates (31) may be less visible to the eyes of the user in front of the display (10). Alternatively, the side may be painted a different color.

[0112] If it is determined in S21 that the angle of all plates (31) is not 0 degrees (S21: No), the control unit (110) can determine whether the angle of all plates (31) is 90 degrees (S23). Here, if the angle of all plates (31) is 90 degrees, the rear of the display (10) is covered by the plates (31).

[0113] If it is determined that the angle of all plates (31) is 90 degrees in S23 (S23: Yes), the control unit (110) can determine that the mode of the display (10) is a light-blocking mode (S24, see the lower figure of FIG. 32). The display (10) may or may not display an image, and a user in front of the display (10) may not be able to see the back of the display (10).

[0114] At this time, the edges of each plate (31) facing the display (10) may be painted black, and the color contrast of the image on the display (10) may be improved. Alternatively, the edges may be painted in a different color.

[0115] If it is determined in S23 that the angle of some of the plates (31) is 0 degrees and the angle of the rest is 90 degrees (S23: No), the control unit (110) can determine that the mode of the display (10) is a partial light-blocking mode (S25, see middle figure of FIG. 32).

[0116] Referring to FIGS. 34 to 36, in a partial shading mode (S25), the control unit (110) can detect the position of each of the plates (31) based on information obtained from the motor (32, see FIG. 13) and the sensor (39b, see FIG. 13), and can detect a light-emitting area (SA) and a light-shading area (SB) (S251). The angle of the plates (31) in the light-emitting area (SA) is 0 degrees, and the angle of the plates (31) in the light-shading area (SB) is 90 degrees.

[0117] When an image is output only in the light-emitting area (SA) (S252: Yes), the control unit (110) can enhance the visibility of the image output in the light-emitting area (SA) according to the user's request. For example, the control unit (110) can increase the brightness, contrast, sharpness, etc. of the image compared to a standard image to enhance the visibility of the image. Here, the standard image is an image having brightness, contrast, sharpness, etc. set based on the light-blocking area (SB). Accordingly, the visibility of the image output in the light-emitting area (SA) can be improved.

[0118] When an image is output only in the light-blocking area (SB) (S254: Yes), the control unit (110) can output a standard image to the light-blocking area (SB) (S255).

[0119] When one image is divided and output to a light-transmitting area (SA) and a light-blocking area (SB) (S257: Yes), the control unit (110) can enhance the visibility of the image output from the light-transmitting area (SA) while outputting a standard image to the light-blocking area (SB) (S258, see FIG. 35). For example, the control unit (110) can increase the brightness, contrast, sharpness, etc. of the image compared to the standard image in the light-blocking area (SB) to enhance the visibility of the image in the transparent area (SA). Accordingly, the sense of disparity between the images in the light-transmitting area (SA) and the light-blocking area (SB) can be reduced. Meanwhile, even when the same image is output to each of the light-transmitting area (SA) and the light-blocking area (SB) (not shown), a control method such as S258 may be performed.

[0120] When different images are output to the light-emitting area (SA) and the light-blocking area (SB) respectively (S257: No), the control unit (110) can enhance the visibility of the image output in the light-emitting area (SA) according to the user's request, while outputting a standard image to the light-blocking area (SB) (S259, see FIG. 36). For example, the control unit (110) can increase the brightness, contrast, sharpness, etc. of the image compared to the standard image in the light-blocking area (SB) to enhance the visibility of the image in the transparent area (SA). Accordingly, the user may enhance the visibility of the image in the light-emitting area (SA) or not enhance the visibility of the image in the light-emitting area (SA). For example, the image in the light-emitting area (SA) may be a real-time chat window linked to the image in the light-blocking area (SB).

[0121] Referring to FIG. 37, a plurality of protrusions (360') may be formed on the inner surface of the belt (36) and may be arranged alternately with a plurality of wheels (34). The spacing between each of the plurality of protrusions (360') and each of the plurality of wheels (34) may be constant (gy'=gx'=gw'). In this case, a plurality of plates (31) may be rotated simultaneously by the plurality of protrusions (360').

[0122] Referring to FIG. 38, a plurality of protrusions (360'') may be formed on the inner circumference of the belt (36) and may be arranged alternately with a plurality of wheels (34). The spacing between each of the plurality of protrusions (360'') and each of the plurality of wheels (34) may increase as it moves further away from the driven pulley (35, see FIG. 12). <gx''<gw''). 이 경우, 복수개의 플레이트들(31)은 복수개의 돌기들(360'')에 의해 종동 풀리(35, 도 12 참조)에 가장 가까운 플레이트부터 가장 먼 플레이트까지 순차적으로 회전될 수 있다.

[0123] This sequential rotation pattern can be varied by adjusting the spacing (gy'', gx'', gw'') between the aforementioned protrusion and wheel.

[0124] Referring to FIGS. 39 through 44, the drive pulley (33') may include a fixed conical plate (331), a movable conical plate (332), and a shaft (333). The horn of the fixed conical plate (331) may face the movable conical plate (332), and the horn of the movable conical plate (332) may face the fixed conical plate (331). The shaft (333) may protrude from the horn of the fixed conical plate (331) toward the movable conical plate (332) and may penetrate the movable conical plate (332).

[0125] The fixed conical plate (331) and the movable conical plate (332) can be fixed to the rotation axis (32a) and rotate together with the rotation axis (32a). Additionally, the movable conical plate (332) can be coupled to the shaft (333) so as to be movable along the longitudinal direction of the shaft (333). For example, a power member such as a linear actuator can cause the movable conical plate (332) to move in a linear reciprocating motion.

[0126] The driven pulley (35') may include a fixed conical plate (351), a movable conical plate (352), and a shaft (353). The horn of the fixed conical plate (351) may face the movable conical plate (352), and the horn of the movable conical plate (352) may face the fixed conical plate (351). The shaft (353) may protrude from the horn of the fixed conical plate (351) toward the movable conical plate (352) and may pass through the movable conical plate (352).

[0127] The movable conical plate (352) can be coupled to the shaft (353) so as to be movable along the longitudinal direction of the shaft (353). For example, a power member (37), such as a linear actuator, can move the movable conical plate (352) in a linear reciprocating motion.

[0128] The belt (36') can be stretched between the fixed conical plates (331, 351) and the movable conical plates (332, 352). The belt (36') can be engaged with the driving pulley (33') and the driven pulley (35'). The belt (36') can be a V-belt.

[0129] Referring to FIGS. 39 to 41, for example, the movable conical plate (332, 352) can be brought as close as possible to the fixed conical plate (331, 351), and a minimum gap (D10) can be formed between the movable conical plate (332, 352) and the fixed conical plate (331, 351). The belt (36') can be caught on the conical surface of the movable conical plate (332, 352) and the conical surface of the fixed conical plate (331, 351), and can form a maximum radius (R10, R20) with respect to the shaft (333).

[0130] Referring to FIGS. 42 to 44, for example, the movable conical plate (332, 352) can be maximally separated from the fixed conical plate (331, 351), and a maximum gap (D11) can be formed between the movable conical plate (332, 352) and the fixed conical plate (331, 351). The belt (36') can be caught on the conical surface of the movable conical plate (332, 352) and the conical surface of the fixed conical plate (331, 351), and can form a minimum radius (R11, R21) with respect to the shaft (333).

[0131] Accordingly, the driving pulley (33') and the driven pulley (35') can be referred to as a variable diameter pulley. Meanwhile, it is also possible to implement a variable diameter pulley using a mechanism different from that described above.

[0132] Referring to FIGS. 45 to 47, the first wheel (34a') may be closest to the driving pulley (33'), and the second wheel (34y') may be closest to the driven pulley (35'). The intermediate wheel (34z') may be located between the first wheel (34a') and the 25th wheel (34y'), and may be any one of the second to 24 wheels (34b', 34c', 34d', 34e', 34f', 34g', 34h', 34i', 34j', 34k', 34l', 34m', 34n', 34o', 34p', 34q', 34r', 34s', 34t', 34u', 34v', 34w', 34x').

[0133] The first wheel (34a'), the middle wheel (34z'), and the 25th wheel (34y') may have an umbrella or mushroom shape overall. The wheels (34a', 34z', 34y') may include a T-shaped stem portion (341) and a dome portion (342). The first side (341a) of the stem portion (341) may be a part that comes into contact with a protrusion (360, see FIGS. 17 to 25). The second side (341b) of the stem portion (341) may be a part that comes into contact with a protrusion (360, see FIGS. 26 to 28).

[0134] The first gear teeth (340a) may be formed on the outer surface of the dome portion (342) of the first wheel (34a'). The first gear teeth (340a) may be located within a certain angle (e.g., 90 degrees) in the circumferential direction of the first wheel (34a'). The first gear teeth (340a) may have a shape that engages with the portion of the belt (36') (i.e., the inner surface of the belt (36')) that engages with the driving pulley (33') and the driven pulley (35').

[0135] Intermediate gear teeth (340z) may be formed on the outer surface of the dome portion (342) of the intermediate wheel (34z'). The intermediate gear teeth (340z) may be located within a certain angle (e.g., 90 degrees) in the circumferential direction of the intermediate wheel (34z'). The intermediate gear teeth (340z) may have a shape that engages with the portion of the belt (36') (i.e., the inner surface of the belt (36')) that engages with the driving pulley (33') and the driven pulley (35').

[0136] The 25th gear teeth (340y) may be formed on the outer surface of the dome portion (342) of the 25th wheel (34y'). The 25th gear teeth (340y) may be located within a certain angle (e.g., 90 degrees) in the circumferential direction of the 25th wheel (34y'). The 25th gear teeth (340y) may have a shape that engages with the portion of the belt (36') (i.e., the inner surface of the belt (36')) that engages with the driving pulley (33') and the driven pulley (35').

[0137] Referring to FIG. 45, the angle of all plates (31a, 31z, 31y) may be 90 degrees, and the radius (R10, R20) of the belt (36') relative to the shaft (333, 353) may be maximum. At this time, the first gear tooth (340a), the intermediate gear tooth (340z), and the 25th gear tooth (340y) may be spaced apart from the belt (36'). In this state, when the drive pulley (33') rotates counterclockwise (CCW), the first plate (31a), the intermediate plate (31z), and the 25th plate (31y) may be rotated sequentially from 90 degrees to 0 degrees.

[0138] Referring to FIG. 46, the radius (R11, R21) of the belt (36') relative to the shaft (333, 353) may be minimal. At this time, the first gear tooth (340a), the intermediate gear tooth (340z), and the 25th gear tooth (340y) may come into contact with the belt (36').

[0139] Referring to FIG. 47, when the drive pulley (33') rotates clockwise (CW), all plates (31a, 31z, 31y) can be rotated according to the engagement of the gear (340a, 340z, 340y) and the belt (36'). Accordingly, all plates (31a, 31z, 31y) can be rotated simultaneously from 90 degrees to 180 degrees. In this state, when the drive pulley (33') rotates counterclockwise (CCW), all plates (31a, 31z, 31y) can be rotated simultaneously from 180 degrees to 90 degrees.

[0140] Meanwhile, in FIG. 45, the distance (g10) between the projection (360) and the drive pulley (33') may be greater than the length of the gear teeth (340a, 340z, 340y). Accordingly, during the engagement of the aforementioned gear teeth (340a, 340z, 340y) and the belt (36'), the projection (360) may not come into contact with the drive pulley (33').

[0141] Referring to FIGS. 48 and 49 in order, a plurality of plates (31) can be rotated simultaneously from 90 degrees to 180 degrees and the rear of the display panel (11) can be opened.

[0142] Referring to FIGS. 48 and 49 in reverse order, a plurality of plates (31) can be rotated simultaneously from 180 degrees to 90 degrees and can close the rear of the display panel (11).

[0143] Referring to FIGS. 1 to 49, a display device according to one aspect of the present disclosure comprises: a display panel having a light-emitting region and a light-transmitting region; a plurality of plates located at the rear of the display panel, extending in one direction and arranged sequentially in the other direction; and a side frame extending along the perimeter of the display panel and each of the plurality of plates being rotatably coupled around a rotation axis parallel to the one direction, wherein the plurality of plates may be rotated sequentially along the other direction and may open and close the rear of the display panel, and the plurality of plates may comprise: a first plate; and a second plate spaced apart from the first plate in the other direction, wherein the rotation point of the second plate may be later than the rotation end point of the first plate.

[0144] The rear of the display panel can be opened through the space between the plurality of plates when the thickness direction of the plurality of plates is aligned in the other direction, and can be closed by the plurality of plates when the thickness direction of the plurality of plates is aligned in a direction that intersects the one direction and the other direction.

[0145] Each of the plurality of plates may have a parallelogram cross-section, and a part of any one of the plurality of plates may overlap with a part of another plate in the front and back when the rear of the display panel is closed.

[0146] Each of the above plurality of plates may include: one side facing the rear of the display panel when the rear of the display panel is closed; and the other side facing the rear of the display panel when the rear of the display panel is open, and the one side may be white, and the other side may be black.

[0147] The above display device may further include: a motor; and a plurality of wheels that receive power from the motor, each of the plurality of wheels may be fixed to the rotation axis of each of the plurality of plates and may be rotated sequentially along the other direction.

[0148] The display device may further include: a drive pulley fixed to the rotational shaft of the motor; a driven pulley facing the drive pulley with respect to the plurality of wheels; a belt engaged with the drive pulley and the driven pulley; and a projection formed on the inner circumference of the belt, and the plurality of wheels may be located on the movement path of the projection corresponding to the movement of the belt.

[0149] The above side frame may include: a top part and a bottom part facing each other in one direction; and a left part and a right part facing each other in the other direction, and each of the plurality of plates may include: a top pin protruding toward the top part from one end of the plate and rotatably coupled to the top part; and a bottom pin protruding toward the bottom part from the other end of the plate, rotatably coupled to the bottom part, and penetrating the bottom part, and each of the plurality of wheels may be fixed to the end of the bottom pin of each of the plurality of plates.

[0150] The display device may further include a first magnet and a second magnet provided on the inner side of the top part or on the inner side of the bottom part and located around the bottom pin or the top pin, and the plate may include a magnetic material, and the first magnet and the second magnet may be spaced apart from each other at 90-degree intervals with respect to the bottom pin or the top pin.

[0151] The above projection can rotate each of the plurality of wheels by more than 45 degrees.

[0152] The above wheel may be a cross-shaped wheel, a T-shaped wheel, or an L-shaped wheel.

[0153] The driving pulley and the driven pulley may be variable diameter pulleys, and each of the plurality of wheels may further include: a dome portion; a T-shaped stem portion coupled to the bottom surface of the dome portion; and a gear tooth formed on the outer surface of the dome portion and positioned within a certain angle range in the circumferential direction of the dome portion, and the gear tooth may have a shape that engages with the inner surface of the belt, and the gear tooth may be spaced apart from the inner surface of the belt when the radius of the belt relative to the center of the variable diameter pulley is maximum, and may contact the inner surface of the belt when the radius of the belt relative to the center of the variable diameter pulley is minimum.

[0154] The above projection may be separated from the driving pulley or the driven pulley during the engagement of the gear tooth and the inner circumference of the belt.

[0155] The above projection may include a plurality of projections arranged alternately with the plurality of wheels, and the spacing between each of the plurality of projections and each of the plurality of wheels may be constant or may increase as it moves further away from the driven pulley.

[0156] The above display device may further include: a housing located below the display panel; and a driving module located in the internal space of the housing and rotating the plurality of plates.

[0157] The above display device may further include: a sensor that detects the rotation angle of the plurality of plates; and a control unit that determines a light-emitting mode or a light-blocking mode of the display panel based on information obtained from the sensor, and the control unit may output an image with enhanced visibility when the display panel displays an image in the light-emitting mode.

[0158] Some or other embodiments of the present disclosure described above are not exclusive or distinguishable from one another. Some or other embodiments of the present disclosure described above may be used in combination or combined for their respective configurations or functions.

[0159] For example, this means that configuration A described in a specific embodiment and / or drawing and configuration B described in another embodiment and / or drawing can be combined. That is, even if the combination between configurations is not directly described, it means that combination is possible, except in cases where it is described that combination is impossible.

[0160] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

Claim 1 A display device comprising: a display panel having a light-emitting area and a light-transmitting area; a plurality of plates located at the rear of the display panel, extending in one direction and arranged sequentially in the other direction; and a side frame extending along the perimeter of the display panel, wherein each of the plurality of plates is rotatably coupled to the side frame around a rotation axis parallel to the one direction, wherein the plurality of plates are rotated sequentially along the other direction and open / close the rear of the display panel, and wherein the plurality of plates include: a first plate; and a second plate spaced apart from the first plate in the other direction, wherein the rotation point of the second plate is later than the rotation end point of the first plate. Claim 2 A display device according to claim 1, wherein the rear of the display panel is open through the space between the plurality of plates when the thickness direction of the plurality of plates is aligned in the other direction, and closed by the plurality of plates when the thickness direction of the plurality of plates is aligned in a direction intersecting the one direction and the other direction. Claim 3 In claim 2, each of the plurality of plates has a parallelogram cross-section, and a part of one of the plurality of plates overlaps with another part in the front and back when the rear of the display panel is closed. Claim 4 A display device according to claim 2, wherein each of the plurality of plates comprises: one side facing the rear of the display panel when the rear of the display panel is closed; and the other side facing the rear of the display panel when the rear of the display panel is open, wherein the one side is white and the other side is black. Claim 5 A display device according to claim 1, comprising a motor; and further comprising a plurality of wheels receiving power from the motor, wherein each of the plurality of wheels is fixed to the rotation axis of each of the plurality of plates and rotates sequentially along the other direction. Claim 6 A display device according to claim 5, further comprising: a drive pulley fixed to the rotational shaft of the motor; a driven pulley facing the drive pulley with respect to the plurality of wheels; a belt engaged with the drive pulley and the driven pulley; and a projection formed on the inner circumference of the belt, wherein the plurality of wheels are positioned on the movement path of the projection corresponding to the movement of the belt. Claim 7 In claim 6, the side frame comprises: a top part and a bottom part facing each other in one direction; and a left part and a right part facing each other in the other direction, and each of the plurality of plates comprises: a top pin protruding toward the top part from one end of the plate and rotatably coupled to the top part; and a bottom pin protruding toward the bottom part from the other end of the plate and rotatably coupled to the bottom part and penetrating the bottom part, and each of the plurality of wheels is fixed to the end of the bottom pin of each of the plurality of plates, a display device. Claim 8 A display device according to claim 7, further comprising a first magnet and a second magnet provided on the inner side of the top part or on the inner side of the bottom part and located around the bottom pin or the top pin, wherein the plate comprises a magnetic material, and the first magnet and the second magnet are spaced apart from each other at 90-degree intervals with respect to the bottom pin or the top pin. Claim 9 In claim 8, the projection is a display device that rotates each of the plurality of wheels by 45 degrees or more. Claim 10 In claim 8, the wheel is a cross-shaped wheel, a T-shaped wheel, or an L-shaped wheel in a display device. Claim 11 In claim 6, the driving pulley and the driven pulley are variable diameter pulleys, and each of the plurality of wheels comprises: a dome portion; a T-shaped stem portion coupled to the bottom surface of the dome portion; and a gear tooth formed on the outer circumference of the dome portion and positioned within a certain angle range in the circumferential direction of the dome portion, wherein the gear tooth has a shape that engages with the inner circumference of the belt, and the gear tooth is spaced apart from the inner circumference of the belt when the radius of the belt relative to the center of the variable diameter pulley is maximum, and contacts the inner circumference of the belt when the radius of the belt relative to the center of the variable diameter pulley is minimum, thereby forming a display device. Claim 12 In claim 11, the projection is a display device that is spaced apart from the driving pulley or the driven pulley during the engagement between the gear tooth formed on the outer circumference of the dome portion and the inner circumference of the belt. Claim 13 In claim 6, the projection comprises a plurality of projections arranged alternately with the plurality of wheels, and the spacing between each of the plurality of projections and each of the plurality of wheels is constant or increases as it moves away from the driven pulley, in a display device. Claim 14 A display device according to claim 1, further comprising: a housing located below the display panel; and a driving module located in the internal space of the housing and rotating the plurality of plates. Claim 15 A display device according to claim 1, further comprising: a sensor for detecting the rotation angle of the plurality of plates; and a control unit for determining a light-emitting mode or a light-blocking mode of the display panel based on information obtained from the sensor, wherein the control unit outputs an image with enhanced visibility when the display panel displays an image in the light-emitting mode.

Images