Display apparatus and manufacturing method for display apparatus

Abstract

The display apparatus includes: a display panel; a light source plate including a printed circuit board and multiple light source modules mounted on the printed circuit board; a front chassis extending along the circumference of the display panel to cover the side surface of the display panel; a rear chassis provided to cover the rear surface of the display panel; and a connection frame connecting the front chassis and the rear chassis, wherein the connection frame includes a rear frame portion formed such that a portion where the rear chassis is coupled to the connection frame is disposed to be parallel to the display panel.

Description

Display device and method of manufacturing a display device

[0001] The present disclosure relates to a display device comprising an optical member.

[0002] A display device is a type of output device that visually displays data information and images, such as characters or graphics, and includes televisions, various monitors, and various portable terminals (e.g., laptops, tablet PCs, and smartphones).

[0003] Display devices can be classified into light-emitting types that use self-emissive display panels, such as Organic Light Emitting Diodes (OLEDs), and light-receiving types that use display panels that cannot emit light themselves and must receive light from a backlight unit, such as Liquid Crystal Displays (LCDs).

[0004] Backlight units can be classified into a direct type, in which the light source is positioned at the rear of the display panel, and an edge type, in which the light source is positioned at the side of the display panel, depending on the position of the light source. A direct type backlight unit may include a light source plate on which a light-emitting diode (LED) is mounted on a flat printed circuit board.

[0005] A light-receiving display device needs to have a certain optically defined optical distance (OD) between the diffuser plate included in the direct-type backlight unit and the light source.

[0006] Depending on the optical distance, the shape of the rear chassis positioned behind the backlight unit can be changed in correspondence with the optical distance.

[0007] One aspect of the present disclosure provides a display device comprising a rear frame portion formed such that a portion of the rear chassis that is coupled to a connecting frame is positioned parallel to a display panel.

[0008] One aspect of the present disclosure provides a display device configured such that the shape of the rear chassis is maintained constant regardless of the distance between backlight units.

[0009] One aspect of the present disclosure provides a method for manufacturing a display device comprising connecting a frame and a rear chassis being joined in a direction parallel to a display panel.

[0010] The technical problems to be solved in this document are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0011] A display device according to the concept of the present disclosure comprises a display panel, a light source plate including a printed circuit board and a plurality of light source modules mounted on the printed circuit board, a front chassis extending along the periphery of the display panel to cover the side of the display panel, a rear chassis provided to cover the rear of the display panel, and a connecting frame connecting the front chassis and the rear chassis, wherein the connecting frame includes a rear frame portion formed such that the portion to which the rear chassis is coupled to the connecting frame is arranged parallel to the display panel.

[0012] A display device according to the concept of the present disclosure comprises a display panel, a backlight unit provided to supply light to the display panel, and a chassis assembly supporting the display panel and the backlight unit. The chassis assembly comprises a front chassis disposed in front of the backlight unit, a rear chassis disposed behind the backlight unit, and a connecting frame disposed between the front chassis and the rear chassis to connect the front chassis and the rear chassis. The connecting frame comprises a front frame portion supporting the front chassis and a rear frame portion having a fastening groove formed in a direction parallel to the display panel to be coupled with the rear chassis.

[0013] A method for manufacturing a display device according to the concept of the present disclosure comprises providing a display panel and a light source plate provided to supply light to the display panel, placing a front chassis in front of the light source plate and a rear chassis in rear of the light source plate, and connecting the front chassis and the rear chassis with a separate connecting frame, wherein the connecting frame and the rear chassis are coupled in a direction parallel to the display panel.

[0014] FIG. 1 illustrates a display device according to one embodiment of the present disclosure.

[0015] FIG. 2 is an exploded perspective view of a display device according to one embodiment of the present disclosure.

[0016] FIG. 3 illustrates a disassembled connection frame and rear chassis according to one embodiment of the present disclosure.

[0017] FIG. 4 is an enlarged view of A in FIG. 3, schematically illustrating the process of combining the connecting frame and the rear chassis.

[0018] FIG. 5 illustrates a combined view of a connecting frame and a rear chassis according to one embodiment of the present disclosure.

[0019] FIG. 6 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure.

[0020] Figure 7 schematically illustrates the process of combining the connecting frame and the rear chassis shown in Figure 6.

[0021] FIG. 8 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure.

[0022] FIG. 9 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure.

[0023] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0024] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0025] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0026] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0027] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0028] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0030] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0031] The terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0032] Terms such as "~part," "~unit," "~block," "~part," and "~module" may refer to a unit that processes at least one function or operation. For example, the above terms may refer to at least one piece of hardware such as an FPGA (field-programmable gate array) or ASIC (application specific integrated circuit), at least one piece of software stored in memory, or at least one process processed by a processor.

[0033] The symbols attached to each step are used to identify each step and do not indicate the order of the steps among themselves; the steps may be performed differently from the specified order unless a specific order is clearly indicated in the context.

[0034] Meanwhile, terms such as "front" and "rear" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, "up / down direction" refers to the Z direction based on the drawings, and "upward" and "downward" may refer to the upward (+Z direction) and downward (-Z direction) directions in the Z direction, respectively, based on the drawings. "front / rear direction" refers to the X direction based on the drawings, and "front" and "rear" may refer to the forward (+X direction) and rear (-X direction), respectively, in the X direction based on the drawings.

[0035] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0036] FIG. 1 illustrates a display device according to one embodiment of the present disclosure.

[0037] Referring to FIG. 1, the display device (1) is a device capable of processing a video signal received from the outside and visually displaying the processed video. In the following examples, the display device (1) is exemplified as a television (TV), but is not limited thereto. For example, the display device (1) can be implemented in various forms such as a monitor, a portable multimedia device, a portable communication device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays video.

[0038] In addition, the display device (1) may be a large format display (LFD) installed outdoors, such as on a building rooftop or at a bus stop. Here, the outdoor area is not necessarily limited to an open space; the display device (1) according to one embodiment may be installed in any indoor location where many people can enter and exit, such as a subway station, shopping mall, movie theater, company, or store.

[0039] The display device (1) receives content including video signals and audio signals from various content sources and can output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data through a broadcast receiving antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0040] FIG. 2 is an exploded perspective view of a display device according to one embodiment of the present disclosure.

[0041] Referring to FIG. 2, the display device (1) may include a display panel (10) for displaying an image, a backlight unit (5) positioned behind the display panel (10) to provide light to the display panel (10), and a chassis assembly (20, 30, 40) that supports the backlight unit (5) and the display panel (10).

[0042] The chassis assembly (20, 30, 40) may include a rear chassis (40) provided to support a backlight unit (5), a front chassis (20) provided in front of the rear chassis (40) to support a display panel (10), and a connecting frame (30) coupled between the front chassis (20) and the rear chassis (40).

[0043] The display panel (10) may include a thin film transistor substrate in which thin film transistors are formed in a matrix form, a color filter substrate coupled in parallel with the thin film transistor substrate, and a liquid crystal injected between the thin film transistor substrate and the color filter substrate, the optical properties of which vary according to changes in voltage or temperature.

[0044] A backlight unit (5) is positioned behind a display panel (10) to illuminate light toward the display panel (10). The backlight unit (5) may include a light source plate (80) comprising a printed circuit board (90) on which a plurality of light source modules (100) are mounted, and optical members (50) positioned on the path of light emitted from the light source plate (80).

[0045] The light source plate (80) may have a flat shape. The light source plate (80) may be placed side by side with the display panel (10).

[0046] The light source plate (80) may include a printed circuit board (90) and a plurality of light source modules (100) mounted on a surface facing the display panel (10) of the printed circuit board (90). The light source modules (100) may include a Light Emitting Diode (LED) chip.

[0047] Optical members (50) are placed on the path of light emitted from the light source module (100) to guide the direction of light travel, reflect light, diffuse light, or improve light properties.

[0048] The optical members (50) may include a diffuser plate (60) that evenly diffuses irregular light emitted from a light source plate (80), and optical sheets (51, 52) that improve optical properties.

[0049] The diffuser plate (60) can evenly diffuse the light emitted from the light source plate (80) and support the optical sheets (51, 52). The diffuser plate (60) can evenly diffuse the light incident on its incident surface and emit it out through its exit surface.

[0050] Optical sheets (51, 52) may be placed in front of the diffuser plate (60) to improve the optical characteristics of light emitted from the diffuser plate (60). The optical sheets (51, 52) may include a diffuser sheet to cancel out the pattern of the diffuser plate (60), a prism sheet to concentrate light to improve brightness, a protection sheet to protect other optical sheets from external impact or foreign matter ingress, and a dual brightness enhancement film (DBEF) that transmits one polarization and reflects the other polarization to improve brightness.

[0051] A reflective sheet (70) may be placed between the diffuser plate (60) and the light source plate (80). The reflective sheet (70) may be provided with a size corresponding to that of the printed circuit board (90). The reflective sheet (70) may be adhered to the mounting surface of the printed circuit board (90) on which a plurality of light source modules (100) are mounted. Alternatively, the reflective sheet (70) may be placed on the upper surface of the printed circuit board (90).

[0052] The reflective sheet (70) can prevent light loss by reflecting light. Specifically, the reflective sheet (70) can reflect light emitted from a plurality of light source modules (100) or light reflected backward from the diffuser plate (60) toward the diffuser plate (60). The reflective sheet (70) can prevent light emitted from a plurality of light source modules (100) from being emitted backward from the display device (1), thereby preventing the light emitted from the plurality of light source modules (100) from being emitted backward from the display device (1).

[0053] The rear chassis (40) may be positioned at the rear of the backlight unit (5). The rear chassis (40) may have a plate shape with the edges roughly folded forward. The backlight unit (5) may be accommodated between the rear chassis (40) and the front chassis (20).

[0054] The rear chassis (40) may include a rear base portion on which a light source plate (80) is installed, and a frame coupling portion (41) formed at the upper, lower, left, and right edges of the rear chassis (40) to be coupled with a connecting frame (30).

[0055] The rear chassis (40) can function to dissipate heat generated from heat-generating elements, such as a plurality of light source modules (100), to the outside. To this end, the rear chassis (40) may be formed from various metal materials such as aluminum or SUS, or plastic materials such as ABS.

[0056] The front chassis (20) may include an opening (23) so that light from the backlight unit (5) is provided to the display panel (10). The front chassis (20) may include a front side portion (21) formed at the upper, lower, left, and right edges of the front chassis (20) to be coupled with the connecting frame (30), and a panel support portion (22) protruding inward from the front side portion (21) to support the display panel (10).

[0057] The connecting frame (30) supports the diffuser plate (60) and can reflect light emitted from the light source plate (80) to the diffuser plate (60). The connecting frame (30) can maintain a gap between the diffuser plate (60) and the light source plate (80). The connecting frame (30) can be coupled between the front chassis (20) and the rear chassis (40).

[0058] The connecting frame (30) may include an opening (31). The connecting frame (30) may include a front frame portion (32) that supports the front chassis (20), a diffuser plate support portion (33) that protrudes inward from the front frame portion (32) to support the diffuser plate (60), a support rib (34) that connects the front frame portion (32) and the rear frame portion (35), and a rear frame portion (35) that extends from the support rib (34) to support the printed circuit board (90).

[0059] The front frame portion (32) can be formed on the upper, lower, left, and right edges of the connecting frame (30). The front frame portion (32) can be coupled to the front chassis (20) through various known fitting coupling structures and separate fastening members.

[0060] The diffuser plate support (33) may protrude inward from the front frame portion (32) to support the diffuser plate (60). The diffuser plate support (33) may support the edge portion of the incident surface of the diffuser plate (60). The diffuser plate support (33) may be formed parallel to the base portion of the rear chassis (40).

[0061] The support rib (34) can reflect light emitted from the light source plate (80) to the incident surface of the diffuser plate (60). The support rib (34) can be extended inwardly and obliquely from the diffuser plate support (33) to the rear. The support rib (34) can be extended inwardly and obliquely from the diffuser plate support (33) toward the rear frame portion (35).

[0062] The rear frame portion (35) can fix the printed circuit board (90) of the light source plate (80) so that it does not lift off the base portion of the rear chassis (40). The rear frame portion (35) can be formed at the inner end of the support rib (34). The edge portion of the printed circuit board (90) of the light source plate (80) can be supported between the rear frame portion (35) and the base portion.

[0063] The front frame portion (32), the diffuser plate support portion (33), the support rib (34), and the rear frame portion (35) of the connecting frame (30) can be formed integrally. A material with high reflectivity may be coated on the surface of the connecting frame (30). The material with high reflectivity may be coated on the entire surface of the connecting frame (30) or only on the surface of the support rib (34). For example, the entire connecting frame (30) or the support rib (34) of the connecting frame (30) may have a white color to ensure good light reflection.

[0064] The rear exterior of the display device (1) can be formed by a rear cover (200).

[0065] The display device (1) may have a constant thickness over its entire surface. The display device (1) may not have a portion of its rear surface thicker than the remaining portion. The display device (1) may have a constant thickness without any portion or configuration protruding backward from the rear surface.

[0066] The rear cover (200) may be provided to cover the rear of the rear chassis (40). The rear cover (200) may be formed by injection molding.

[0067] FIG. 3 illustrates a disassembled connection frame and rear chassis according to one embodiment of the present disclosure.

[0068] Referring to FIG. 3, the connecting frame (30) may be configured such that each frame constituting a rectangular frame is detachably formed. Each frame of the connecting frame (30) is not formed as a single unit, and each frame may be independently connected to the rear chassis (40).

[0069] Each frame separated from the connecting frame (30) can be combined with a corresponding edge portion of the rear chassis (40). For example, a separated frame provided in the upper direction of the display panel (10) can be combined with the edge of the rear chassis (40) in the upper direction of the display panel (10).

[0070] A fastening hook (42), to be described later, included in the rear chassis (40) can be locked and coupled to a fastening groove (37), to be described later, included in each frame of the connecting frame (30). For example, each frame may include a plurality of fastening grooves (37), and the rear chassis (40) may include a plurality of fastening hooks (42) at positions corresponding to the plurality of fastening grooves (37), so that a plurality of fastening hooks (42) can be coupled to the plurality of fastening grooves (37).

[0071] FIG. 4 is an enlarged view of A in FIG. 3, schematically illustrating the process of combining a connecting frame and a rear chassis. FIG. 5 illustrates the combined appearance of a connecting frame and a rear chassis according to an embodiment of the present disclosure.

[0072] Referring to FIGS. 4 and 5, the rear frame portion (35) may include a fastening groove (36) extending in a direction parallel to the display panel (10) so that a frame coupling portion (41) is inserted. The fastening groove (36) may be formed by a fastening groove upper portion (38) provided separately and a fastening groove lower portion (39) provided integrally. However, the shape of the fastening groove upper portion (38) and the fastening groove lower portion (39) is not limited to this embodiment.

[0073] The fastening groove (36) may be provided to correspond to the length and shape of the frame coupling portion (41). For example, a fastening groove (36) extending in a direction parallel to the display panel (10) may be provided in the rear frame portion (35) to correspond to the length and shape of the frame coupling portion (41) which extends and protrudes in a direction parallel to the display panel (10) from the rear chassis (40).

[0074] The frame connecting part (41) may include a fastening hook (42). The fastening hook (42) may be provided on the lower surface of the frame connecting part (41). The fastening hook (42) may be designed such that a portion of the fastening hook (42) is fixed inside the fastening groove (36). The fastening hook (42) may be provided to maintain the connected state after the frame connecting part (41) is connected to the fastening groove (36). For example, the fastening hook (42) may be provided in a hook shape or an L shape and fixed to the fastening slot (37) described later. However, the shape of the fastening hook (42) is not limited to this embodiment.

[0075] The fastening groove (36) may include a fastening slot (37) into which a fastening hook (42) is locked to secure the frame coupling part (41). The fastening slot (37) may be formed in the lower part (39) of the fastening groove. A space may be provided in the fastening slot (37) where the fastening hook (42) can be locked. The fastening slot (37) may be provided to correspond to the shape of the fastening hook (42) so that the coupling state does not become loose even with external impact or vibration. Accordingly, when the frame coupling part (41) is inserted into the fastening groove (36), the fastening hook (42) is locked into the fastening slot (37), and the rear chassis (40) can be secured to the rear frame part (35).

[0076] FIG. 6 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure. FIG. 7 schematically illustrates the process of combining the connecting frame and the rear chassis shown in FIG. 6.

[0077] As previously mentioned, the display device (1) may include a display panel (10) that displays an image.

[0078] The display device (1) may include a light source plate (80) comprising a printed circuit board (90) on which a plurality of light source modules (100) are mounted, and optical members (50) disposed on the path of light emitted from the light source plate (80).

[0079] The display device (1) may include a diffuser plate (60) that evenly diffuses irregular light emitted from a light source plate (80), and optical sheets (51, 52) that improve optical properties.

[0080] The display device (1) may include a reflective sheet (70) disposed between a diffuser plate (60) and a light source plate (80). The reflective sheet (70) may be provided with a size corresponding to that of a printed circuit board (90). The reflective sheet (70) may be adhered to the mounting surface of the printed circuit board (90) on which a plurality of light source modules (100) are mounted. Alternatively, the reflective sheet (70) may be disposed on the upper surface of the printed circuit board (90).

[0081] The front frame portion (32) can be formed on the upper, lower, left, and right edges of the connecting frame (30). The front frame portion (32) can be coupled to the front chassis (20) through various known fitting coupling structures and separate fastening members.

[0082] Referring to FIGS. 6 and 7, the display device (1) may include a rear frame portion (35) formed such that the portion to which the rear chassis (40) is coupled to the connecting frame (30) is positioned parallel to the display panel (10). The rear chassis (40) may include a frame coupling portion (41) extending in a direction parallel to the display panel (10) to be coupled to the rear frame portion (35). For example, the frame coupling portion (41) of the rear chassis (40) coupled to the rear frame portion (35) of the connecting frame (30) may be formed such that it is positioned parallel to the display panel (10).

[0083] The rear frame portion (35) may include a fastening groove (36) extending in a direction parallel to the display panel (10) so that a frame coupling portion (41) is inserted. The frame coupling portion (41) may be coupled to the fastening groove (36) extending in a direction parallel to the display panel (10) in a direction parallel to and horizontal to the display panel (10).

[0084] For example, if the frame connecting portion of the rear chassis that is connected to the frame portion extends in a direction parallel to and perpendicular to the display panel, the frame connecting portion is inserted into the frame portion in a direction perpendicular to the display panel. However, in the present disclosure, the frame connecting portion (41) extends in a direction parallel to the display panel (10), so the frame connecting portion (41) can be inserted into the rear frame portion (35) in a direction horizontal to the display panel (10).

[0085] FIG. 8 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure.

[0086] Referring to FIG. 8, a display device (2) according to one embodiment of the present disclosure will be described. In describing the display device (2) shown in FIG. 8, the same reference numerals are assigned to components identical to those shown in FIG. 1 to FIG. 7, and detailed descriptions may be omitted.

[0087] Referring to FIG. 8, a display device (2) according to one embodiment of the present disclosure may be configured such that the distance between a diffuser plate (60) and a reflective sheet (70) includes a second optical distance (D2). For example, the second optical distance (D2) may be longer than the first optical distance (D1) of the display device (1) shown in FIG. 6.

[0088] The display device (2) may include a display panel (10) that displays an image. The configuration of the display panel (10) of the display device (2) may be provided in the same way as the configuration of the display panel (10) shown in FIG. 6.

[0089] The display device (2) may include a light source plate (80) comprising a printed circuit board (90) on which a plurality of light source modules (100) are mounted, and optical members (50) disposed on the path of light emitted from the light source plate (80). The configurations of the plurality of light source modules (100), printed circuit board (90), light source plate (80), and optical members (50) of the display device (2) may be provided in the same manner as the configurations of the plurality of light source modules (100), printed circuit board (90), light source plate (80), and optical members (50) shown in FIG. 6.

[0090] The display device (2) may include a diffuser plate (60) that evenly diffuses irregular light emitted from a light source plate (80), and optical sheets (51, 52) that improve optical properties. The configurations of the diffuser plate (60) and optical sheets (51, 52) of the display device (2) may be provided in the same way as the configurations of the diffuser plate (60) and optical sheets (51, 52) shown in FIG. 6.

[0091] The display device (2) may include a reflective sheet (70) disposed between a diffuser plate (60) and a light source plate (80). The reflective sheet (70) may be provided with a size corresponding to that of a printed circuit board (90). The reflective sheet (70) may be adhered to the mounting surface of the printed circuit board (90) on which a plurality of light source modules (100) are mounted. Alternatively, the reflective sheet (70) may be disposed on the upper surface of the printed circuit board (90). The configuration of the reflective sheet (70) of the display device (2) may be provided in the same way as the configuration of the reflective sheet (70) shown in FIG. 6.

[0092] The front frame portion (32) may be formed on the upper, lower, left, and right edges of the connecting frame (30a). The front frame portion (32) may be coupled to the front chassis (20) through various known fitting coupling structures and separate fastening members. The configuration of the front frame portion (32) of the display device (2) may be provided in the same way as the configuration of the front frame portion (32) shown in FIG. 6.

[0093] A display device (2) according to one embodiment of the present disclosure may be configured such that the shape of the rear chassis (40) is maintained at a constant level independently of the optical distance between the diffuser plate (60) and the reflector sheet (70). Additionally, the shape of the rear chassis (40) may be configured such that it is maintained at a constant level independently of the optical distance (OD) between the diffuser plate (60) and a plurality of light source modules (100).

[0094] For example, when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 6 is 3.3 mm, and when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 8 is 13.3 mm, the length and shape of the rear chassis (40) can be arranged to be maintained constant.

[0095] Likewise, the shape of the rear chassis (40) can be arranged to remain constant regardless of the distance between the light source plate (80) and the optical members (50). For example, as the distance between the light source plate (80) and the optical members (50) changes, the shape of the rear chassis (40) can be arranged to remain constant without changing in response.

[0096] A display device (1) according to one embodiment of the present disclosure may be configured so that the position of the rear chassis (40) and the position of the rear frame part (35) coupled to the rear chassis (40) are adjusted in correspondence with the distance between the diffuser plate (60) and the reflective sheet (70).

[0097] For example, when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 6 is 3.3 mm, and when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 8 is 13.3 mm, the position of the rear chassis (40) and the position of the rear frame part (35) can be arranged to be adjusted in response to the changing optical distance.

[0098] Likewise, when the optical distance between the light source plate (80) and the optical members (50) changes, the position of the rear chassis (40) and the position of the rear frame part (35) coupled to the rear chassis (40) may be adjusted in response.

[0099] When the optical distance between the diffuser plate (60) and the reflector sheet (70) changes, the length of the support rib (34a) included in the connecting frame (30a) may be adjusted in response. Additionally, when the optical distance between the diffuser plate (60) and the plurality of light source modules (100) changes, the length of the support rib (34a) included in the connecting frame (30a) may be adjusted in response.

[0100] For example, the length of the support rib (34a) when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 8 is 13.3 mm can be made longer than the length of the support rib (34) when the optical distance between the diffuser plate (60) and the reflector sheet (70) shown in FIG. 6 is 3.3 mm.

[0101] Likewise, when the optical distance between the light source plate (80) and the optical members (50) changes, the length of the support rib (34a) of the connecting frame (30a) may be adjusted in response.

[0102] FIG. 9 is a cross-sectional view illustrating a portion of the cross-section of a display device according to one embodiment of the present disclosure.

[0103] Referring to FIG. 9, a display device (3) according to one embodiment of the present disclosure will be described. In describing the display device (3) shown in FIG. 9, the same reference numerals are assigned to components identical to those shown in FIG. 1 to FIG. 7, and detailed descriptions may be omitted.

[0104] Referring to FIG. 9, in a display device (3) according to one embodiment of the present disclosure, as the lengths of the upper part (38b) and the lower part (39b) of the fastening groove become longer, the opening width of the starting part of the fastening groove (36b) into which the frame coupling part (41) is inserted can be formed wider. For example, the upper part (38b) and the lower part (38b) of the fastening groove can be provided longer than the lengths of the upper part (38) and the lower part (39) of the fastening groove shown in FIG. 6.

[0105] The display device (3) may include a display panel (10) that displays an image. The configuration of the display panel (10) of the display device (3) may be provided in the same way as the configuration of the display panel (10) shown in FIG. 6.

[0106] The display device (3) may include a light source plate (80) comprising a printed circuit board (90) on which a plurality of light source modules (100) are mounted, and optical members (50) disposed on the path of light emitted from the light source plate (80). The configurations of the plurality of light source modules (100), printed circuit board (90), light source plate (80), and optical members (50) of the display device (3) may be provided in the same manner as the configurations of the plurality of light source modules (100), printed circuit board (90), light source plate (80), and optical members (50) shown in FIG. 6.

[0107] The display device (3) may include a diffuser plate (60) that evenly diffuses irregular light emitted from a light source plate (80), and optical sheets (51, 52) that improve optical properties. The configurations of the diffuser plate (60) and optical sheets (51, 52) of the display device (3) may be provided in the same way as the configurations of the diffuser plate (60) and optical sheets (51, 52) shown in FIG. 6.

[0108] The display device (3) may include a reflective sheet (70) disposed between a diffuser plate (60) and a light source plate (80). The reflective sheet (70) may be provided with a size corresponding to that of a printed circuit board (90). The reflective sheet (70) may be adhered to the mounting surface of the printed circuit board (90) on which a plurality of light source modules (100) are mounted. Alternatively, the reflective sheet (70) may be placed on the upper surface of the printed circuit board (90). The configuration of the reflective sheet (70) of the display device (3) may be provided in the same way as the configuration of the reflective sheet (70) shown in FIG. 6.

[0109] The front frame portion (32) may be formed on the upper, lower, left, and right edges of the connecting frame (30b). The front frame portion (32) may be coupled to the front chassis (20) through various known fitting coupling structures and separate fastening members. The configuration of the front frame portion (32) of the display device (3) may be provided in the same way as the configuration of the front frame portion (32) shown in FIG. 6.

[0110] Referring to FIGS. 6 and FIGS. 9, in a display device (3) according to one embodiment of the present disclosure, the upper part (38b) and the lower part (39b) of the fastening groove are provided to be longer than the lengths of the upper part (38) and the lower part (39) of the fastening groove disclosed in FIG. 6, thereby widening the width of the entrance of the fastening groove (36b), so that the frame coupling part (41) can be easily inserted into the fastening groove (36b) when assembling the display device (3). For example, the widening of the entrance of the fastening groove (36b) can reduce the limitation on the insertion angle of the frame coupling part (41). For example, the widening of the entrance of the fastening groove (36b) can minimize friction or interference phenomena that may occur when the frame coupling part (41) is inserted, thereby preventing damage to the display device (3).

[0111] A display device according to one embodiment comprises a display panel, a light source plate including a printed circuit board and a plurality of light source modules mounted on the printed circuit board, a front chassis extending along the periphery of the display panel to cover the side of the display panel, a rear chassis provided to cover the rear of the display panel, and a connecting frame connecting the front chassis and the rear chassis, wherein the connecting frame includes a rear frame portion formed such that the portion to which the rear chassis is coupled to the connecting frame is arranged parallel to the display panel.

[0112] The rear chassis may include a frame coupling portion extending in a direction parallel to the display panel to be coupled with the rear frame portion.

[0113] The rear frame portion may include a fastening groove extending in the direction into which the frame coupling portion is inserted.

[0114] The above frame coupling part includes a fastening hook, and the fastening groove may include a fastening slot into which the fastening hook is locked to fix the frame coupling part.

[0115] It may include a diffuser plate disposed in front of the light source plate to diffuse light emitted from the plurality of light source modules, and a reflective sheet disposed between the diffuser plate and the light source plate.

[0116] The shape of the rear chassis can be arranged to be maintained consistently regardless of the distance between the diffuser plate and the reflector sheet.

[0117] The position of the rear chassis and the position of the rear frame part coupled to the rear chassis can be arranged to be adjusted in correspondence with the distance between the diffuser plate and the reflective sheet.

[0118] The above connecting frame may further include a front frame portion supporting the front chassis and a support rib connecting the front frame portion and the rear frame portion.

[0119] The above support rib may be provided so that its length is adjusted in correspondence with the optical distance between the diffuser plate and the reflector sheet.

[0120] It may further include a rear cover that covers the rear of the rear chassis and forms the rear exterior of the display device.

[0121] A display device according to one embodiment comprises a display panel, a backlight unit provided to supply light to the display panel, and a chassis assembly supporting the display panel and the backlight unit. The chassis assembly comprises a front chassis disposed in front of the backlight unit, a rear chassis disposed behind the backlight unit, and a connecting frame disposed between the front chassis and the rear chassis to connect the front chassis and the rear chassis. The connecting frame comprises a front frame portion supporting the front chassis and a rear frame portion having a fastening groove formed in a direction parallel to the display panel to be coupled with the rear chassis.

[0122] The rear chassis may include a frame coupling portion extending in a direction parallel to the display panel so as to be inserted into the fastening groove.

[0123] The above frame coupling part includes a fastening hook, and the fastening groove may include a fastening slot into which the fastening hook is locked to fix the frame coupling part.

[0124] The above backlight unit includes a light source plate comprising a light source module and optical members disposed on the path of light emitted from the light source plate, and the rear chassis can be coupled to the rear surface of the light source plate.

[0125] The shape of the rear chassis can be arranged to be maintained consistently regardless of the distance between the light source plate and the optical members.

[0126] The distance between the front frame portion and the rear frame portion may be adjusted in correspondence with the distance between the light source plate and the optical members.

[0127] The above connecting frame may be configured such that the shape of the support rib connecting the front frame and the rear frame can be varied in correspondence with the position of the rear frame.

[0128] A method for manufacturing a display device according to one embodiment comprises providing a display panel and a light source plate arranged to supply light to the display panel, arranging a front chassis in front of the light source plate and arranging a rear chassis behind the light source plate, and connecting the front chassis and the rear chassis with a separate connecting frame, wherein the connecting frame and the rear chassis are coupled in a direction parallel to the display panel.

[0129] The rear chassis includes a frame coupling portion extending in a direction parallel to the display panel, and the connecting frame may include a front frame portion including a fastening groove into which the frame coupling portion is inserted.

[0130] The above frame coupling part includes a fastening hook, and the fastening groove may include a fastening slot into which the fastening hook is locked to fix the frame coupling part.

[0131] According to the concept of the present disclosure, the shape of the rear chassis is maintained constant regardless of optical distance, thereby reducing the production cost of the display device.

[0132] According to the concept of the present disclosure, a display device having an improved structure can easily insert a rear chassis into a connecting frame.

[0133] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs.

[0134] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

Display panel; A light source plate comprising a printed circuit board and a plurality of light source modules mounted on the printed circuit board; A front chassis extending along the perimeter of the display panel to cover the side of the display panel; A rear chassis provided to cover the rear of the above-mentioned display panel; and A connecting frame connecting the front chassis and the rear chassis; is included, The above connecting frame is, A display device comprising a rear frame portion formed such that the portion of the rear chassis that is coupled to the connecting frame is positioned parallel to the display panel. Display panel; A light source plate comprising a printed circuit board and a plurality of light source modules mounted on the printed circuit board; A front chassis extending along the perimeter of the display panel to cover the side of the display panel; A rear chassis provided to cover the rear of the above-mentioned display panel; and A connecting frame connecting the front chassis and the rear chassis; is included, The above connecting frame is, A display device comprising a rear frame portion formed such that the portion of the rear chassis that is coupled to the connecting frame is positioned parallel to the display panel. In paragraph 2, A display device comprising a rear frame portion including a fastening groove extending in the direction into which the frame coupling portion is inserted. In paragraph 3, The above frame connecting part includes a fastening hook, and The above fastening groove is a display device comprising a fastening slot in which the fastening hook is locked to fix the frame coupling portion. In paragraph 1, It includes a diffuser plate positioned in front of the light source plate to diffuse light emitted from the plurality of light source modules. A display device comprising a reflective sheet disposed between the diffuser plate and the light source plate. In paragraph 5, A display device configured to maintain the shape of the rear chassis consistently regardless of the distance between the diffuser plate and the reflective sheet. In paragraph 5, A display device configured such that the position of the rear chassis and the position of the rear frame part coupled to the rear chassis are adjusted in correspondence with the distance between the diffuser plate and the reflective sheet. In paragraph 5, The above connecting frame is a display device further comprising a front frame portion supporting the front chassis and a support rib connecting the front frame portion and the rear frame portion. In paragraph 8, The above support rib is, A display device configured to have its length adjusted in correspondence with the optical distance between the above-mentioned diffuser plate and the above-mentioned reflective sheet. In paragraph 1, A display device further comprising a rear cover that covers the rear of the rear chassis and forms the rear exterior of the display device.

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