Optical touch sensing device and display device comprising same

Abstract

An optical touch sensing device of the present invention may comprise: a cover glass; a guide frame that guides an installation position of the cover glass and supports a lower portion of an edge of the cover glass and a side surface of the cover glass; and an optical touch sensing unit that includes a light-emitting unit which generates light and emits the light onto the cover glass and a light-receiving unit which senses the light emitted from the light-emitting unit, wherein the light-emitting unit comprises: a first circuit board that extends in a direction perpendicular to the cover glass; a light source that is mounted on the first circuit board and emits light; a first optical filter that filters light other than wavelengths used for touch sensing and is disposed between the light source and the light receiving unit on a traveling path of the light; and a first movement prevention unit that prevents movement of the first circuit board, wherein the guide frame provides a space for installing the first circuit board, and the first movement prevention unit may be provided between the first circuit board and the guide frame.

Description

Optical touch sensing device and display device including the same

[0001] The present invention relates to an optical touch sensing device and a display device including the same.

[0002] Touch-sensitive devices, such as touch screens, are one of the many ways to interface users with information and communication devices using various displays. They are input devices that allow users to interact with the device by directly touching the screen with their hands or a pen. These touch-sensitive devices can be categorized into resistive, capacitive, ultrasonic, and infrared types depending on their recognition method. Capacitive touch-sensitive devices are the most widely used due to their superior touch accuracy and durability. However, capacitive touch-sensitive devices have the disadvantage of not being able to detect the touch of insulating materials, such as gloved hands or fingernails, and are expensive when applied to large screens.

[0003] Infrared touch-sensitive devices, which include a light emitter and a light receiver, offer the advantages of being easy to apply to large screens and being durable. However, because the light emitter and light receiver are mounted at the corners of the display panel, some areas of the cover glass are lost, or the frame size increases, resulting in a larger bezel.

[0004] The present invention was created to solve the problems of the prior art as described above, and one object of the present invention is to provide a touch sensing device and a display device including the same having a slim bezel width and height by reducing the bezel width that increases due to the influence of the optical filter width and reducing the bezel height due to the height of the cover glass.

[0005] In addition, another object of the present invention is to provide an ultra-slim optical touch sensing device and a display device including the same, which have excellent touch sensitivity by preventing movement of a light emitting portion and a light receiving portion due to a fixed structure of a cover glass and an optical filter.

[0006] An optical touch sensing device according to one embodiment of the present invention comprises: a cover glass; a guide frame that guides an installation position of the cover glass and supports a lower portion of a frame of the cover glass and a side surface of the cover glass; and an optical touch sensing unit that includes a light emitting unit that generates light and emits it onto the cover glass, and a light receiving unit that detects the light emitted from the light emitting unit, wherein the light emitting unit includes: a first circuit board extending in a direction perpendicular to the cover glass; a light source mounted on the first circuit board and emitting light; a first optical filter that filters light of a wavelength other than that used for touch sensing and is disposed between the light source and the light receiving unit on a path of light; and a first flow prevention unit that prevents movement of the first circuit board, wherein the guide frame provides a space for installing the first circuit board, and the first flow prevention unit can be provided between the first circuit board and the guide frame.

[0007] In an optical touch sensing device according to one embodiment of the present invention, the light receiving unit includes a second circuit board extending in a direction perpendicular to the cover glass; a light receiving element mounted on the second circuit board and detecting light; a second optical filter disposed between the light emitting unit and the light receiving element on a path of light, the second optical filter filtering light having a wavelength other than that used for touch sensing; and a second flow prevention unit preventing movement of the second circuit board, wherein the guide frame provides a space for installing the second circuit board, and the second flow prevention unit may be provided between the second circuit board and the guide frame.

[0008] In an optical touch sensing device according to one embodiment of the present invention, the guide frame includes a pair of first frames extending in a first direction; and a pair of second frames extending in a second direction intersecting the first direction, wherein the light emitting unit and the light receiving unit are provided in frames facing each other among the first frames and the second frames, wherein the first frames include a first vertical portion corresponding to a side surface of the cover glass, and a first horizontal portion having a shape bent and extended from the first vertical portion, and the second frames include a second vertical portion corresponding to a side surface of the cover glass, and a second horizontal portion having a shape bent and extended from the second vertical portion, wherein the first vertical portion and the second vertical portion include a first extension portion extending in a direction perpendicular to the cover glass; a second extension portion bent and extended from the first extension portion; and a third extension portion bent from the second extension portion and parallel to the first extension portion, wherein the first extension portion may be provided with a recess, and a step may be provided on an edge of the recess.

[0009] In an optical touch sensing device according to one embodiment of the present invention, the first circuit board and the second circuit board are arranged in a stepped area of ​​the recess formed by the step, and can be spaced apart from the first extension by the recess.

[0010] In an optical touch sensing device according to one embodiment of the present invention, a groove is provided on at least one upper surface of both ends of the first horizontal portion, and a catch having a shape corresponding to the groove is provided on at least one lower surface of both ends of the second horizontal portion, and the groove and the catch can be combined to prevent twisting of the guide frame.

[0011] In an optical touch sensing device according to one embodiment of the present invention, a first flange is provided at one end of the first vertical portion, which extends in the first direction and has a first hole into which a screw can be inserted in the second direction, a second flange is provided at the other end of the first vertical portion, which extends in the first direction and has a second hole into which a screw can be inserted in a direction perpendicular to a plane formed by the first direction and the second direction, a third flange is provided at one end of the second vertical portion, which extends in the second direction and corresponds to the second flange, and a third hole corresponding to the second hole is provided in the third flange, and a screw hole corresponding to the first hole and into which at least a part of a screw inserted into the first hole is inserted may be provided at the other end of the second vertical portion.

[0012] In an optical touch sensing device according to one embodiment of the present invention, a flange having a through hole extending in the first direction and into which a screw can be inserted in the second direction may be provided at both ends of one of the first vertical portion and the second vertical portion, and a screw hole corresponding to the through hole and into which at least a part of a screw inserted into the through hole may be inserted may be provided at both ends of the other of the first vertical portion and the second vertical portion.

[0013] In an optical touch sensing device according to one embodiment of the present invention, a flange is provided at both ends of one of the first vertical portion and the second vertical portion, the flange having a through hole extending in the first direction and having a screw insertable in a direction perpendicular to a plane formed by the first direction and the second direction, and another flange is provided at both ends of the other of the first vertical portion and the second vertical portion, the flange extending in the second direction and corresponding to the flange, and another through hole may be provided in the other flange corresponding to the through hole, into which at least a part of a screw inserted into the through hole is inserted.

[0014] In an optical touch sensing device according to one embodiment of the present invention, a substrate fixing member may be further included, which is provided on a joint portion of the flange and the other flange and is positioned in close contact with the side portions of the first circuit board and the second circuit board to prevent movement of the first circuit board and the second circuit board.

[0015] An optical touch sensing device according to one embodiment of the present invention comprises: a cover glass; a guide frame that guides an installation position of the cover glass and supports a lower portion of a frame of the cover glass and a side surface of the cover glass; and an optical touch sensing unit including a light emitting unit that emits light generated from a light source onto the cover glass, and a light receiving unit that has a light receiving element that detects the light emitted from the light emitting unit, wherein each of the light emitting unit and the light receiving unit comprises: a circuit board on which the light source or the light receiving element is mounted and which extends in a direction perpendicular to the cover glass; an optical filter that filters light other than a wavelength used for touch sensing and is disposed between the light source and the light receiving element on a path of light; and a movement prevention frame that prevents movement of the circuit board, wherein the guide frame provides a space for installing the circuit board, and the movement prevention frame can be provided on an outer side of the circuit board.

[0016] In an optical touch sensing device according to one embodiment of the present invention, the guide frame may include a pair of first frames extending in a first direction; and a pair of second frames extending in a second direction intersecting the first direction, wherein the light emitting unit and the light receiving unit are respectively provided in frames facing each other among the first frames and the second frames, wherein the first frames include a first vertical portion corresponding to a side surface of the cover glass, and a first horizontal portion having a shape extended by being bent from the first vertical portion, and the second frames include a second vertical portion corresponding to a side surface of the cover glass, and a second horizontal portion having a shape extended by being bent from the second vertical portion, and the first vertical portion and the second vertical portion may include a first extension portion extending in a direction perpendicular to the cover glass; and a second extension portion extended by being bent from the first extension portion.

[0017] In an optical touch sensing device according to one embodiment of the present invention, the flow prevention frame may include a first region extending parallel to the first frame and the second frame; a second region extending toward the circuit board between both ends of the first region; and a third region extending parallel to the second region from a lower end of the first region.

[0018] An optical touch sensing device according to one embodiment of the present invention includes a second extension portion inserted into a space formed by the first region, the second region, and the third region, a lower portion of the first region is fastened to the second extension portion, and the optical touch sensing device further includes a front cover provided on a side of the cover glass, the guide frame, and the optical touch sensing portion, wherein the movement prevention frame is provided between the circuit board and the front cover to fix the circuit board.

[0019] In an optical touch sensing device according to one embodiment of the present invention, the front cover may include a first cover area covering a side surface of the guide frame; a second cover area bent from an upper portion of the first cover area to cover an upper portion of the optical filter; a flow prevention rib protruding parallel to the first cover area from a portion of the second cover area; and a hook portion protruding parallel to the second cover area from a lower portion of the first cover area.

[0020] In an optical touch sensing device according to one embodiment of the present invention, the first region of the flow-preventing frame can be inserted between the flow-preventing rib and the hook portion.

[0021] An optical touch sensing device according to one embodiment of the present invention may further include a corner bracket disposed at a lower portion of the guide frame, wherein the corner bracket is provided at a lower portion of a combined portion of the first frame and the second frame, and may include a deformation prevention part fastened to the first frame and the second frame; and an extension part extending from the deformation prevention part in the direction of the display module.

[0022] In an optical touch sensing device according to one embodiment of the present invention, at least a portion of the extension portion may be bent to come into contact with the lower portion of the display module.

[0023] In an optical touch sensing device according to one embodiment of the present invention, a first flange is provided at both ends of one of the first vertical portion and the second vertical portion, the first flange having a through hole extending in the first direction and having a screw insertable in a direction perpendicular to a plane formed by the first direction and the second direction, and a second flange is provided at both ends of the other of the first vertical portion and the second vertical portion, the second flange extending in the second direction and corresponding to the flange, and another through hole may be provided in the second flange corresponding to the through hole, into which at least a part of a screw inserted into the through hole is inserted.

[0024] An optical touch sensing device according to one embodiment of the present invention further includes a substrate fixing member provided on a portion where the first flange and the second flange are joined, wherein the substrate fixing member is positioned in close contact with a side of the circuit board to prevent movement of the circuit board.

[0025] An optical touch sensing device according to one embodiment of the present invention further includes a display module support bracket that is fastened to the lower portions of the first frame and the second frame and supports the display module by having at least a portion thereof in contact with the lower portion of the display module, wherein the display module support bracket can be fastened to the first frame and the second frame through a groove formed in the movement prevention frame.

[0026] The optical touch sensing device according to the present invention and the display device including the same can be implemented with an ultra-slim bezel in terms of width and height.

[0027] In addition, the optical touch sensing device according to the present invention and the display device including the same can maintain high touch sensitivity by accurately aligning the light emitting portion and the light receiving portion and preventing movement.

[0028] In addition, the optical touch sensing device according to the present invention and the display device including the same can minimize the loss area of ​​the cover glass and maintain high touch sensitivity by preventing movement of the light emitting portion and the light receiving portion.

[0029] Additionally, the optical touch sensing device and display device including the same according to the present invention can minimize defect rates during injection and extrusion processes by including a relatively simple frame shape. Accordingly, assembly is easy, minimizing defect rates during the assembly process.

[0030] FIG. 1 is a perspective view illustrating a display device according to one embodiment of the present invention.

[0031] FIG. 2 is an exploded perspective view according to one embodiment of the display device illustrated in FIG. 1.

[0032] Figure 3 is a cross-sectional view of a portion of the display device illustrated in Figure 2.

[0033] FIG. 4 is an exploded perspective view illustrating the first frame and the second frame of the mold frame illustrated in FIG. 2.

[0034] FIG. 5 is a drawing for explaining the combined structure of the first frame and the second frame shown in FIG. 4.

[0035] Fig. 6 is an exploded perspective view illustrating the first frame and the second frame of the mold frame illustrated in Fig. 2.

[0036] FIG. 7 is a drawing for explaining the combined structure of the first frame and the second frame shown in FIG. 6.

[0037] FIG. 8 is a drawing for explaining the joint structure of a mold frame according to another example of the present invention.

[0038] FIGS. 9 to 12 are drawings for explaining the assembly process of a display device according to one embodiment of the present invention.

[0039] FIGS. 13 to 15 are cross-sectional views illustrating display devices according to other embodiments of the present invention.

[0040] FIG. 16 is an exploded perspective view according to another embodiment of the display device illustrated in FIG. 1.

[0041] Fig. 17 is a cross-sectional view of a portion of the display device illustrated in Fig. 16.

[0042] Fig. 18 is an exploded perspective view illustrating the first frame and the second frame of the mold frame illustrated in Fig. 16 and their combined structure.

[0043] Fig. 19 is a drawing for explaining a substrate fixing member provided on a portion where the first frame and the second frame shown in Fig. 18 are combined.

[0044] Fig. 20 is a drawing for explaining how to firmly connect the first frame and the second frame shown in Fig. 18 using a connector.

[0045] Figures 21 and 22 are drawings for explaining the combination of the first circuit board and the guide frame.

[0046] Figure 23 is a drawing for explaining the first flow prevention frame and the second flow prevention frame.

[0047] Figure 24 is a drawing for explaining a guide frame, a first circuit board, a second circuit board, a first flow prevention frame, and a second flow prevention frame.

[0048] Figure 25 is a drawing for explaining the front cover shown in Figure 16.

[0049] FIG. 26 is a drawing for explaining a corner bracket and a panel support bracket provided at the lower portion of the portion where the first frame and the second frame shown in FIG. 18 are combined.

[0050] The purpose, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments, taken in conjunction with the accompanying drawings. In this specification, when reference numerals are assigned to components in each drawing, it should be noted that, where possible, identical components are assigned the same reference numerals even if they appear in different drawings. Furthermore, in describing the present invention, if a detailed description of a related known technology is deemed to unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

[0051] In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

[0052] Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another.

[0053] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0054] FIG. 1 is a perspective view for explaining a display device according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of the display device illustrated in FIG. 1, FIG. 3 is a partial cross-sectional view of the display device illustrated in FIG. 2, FIG. 4 is an exploded perspective view for explaining a first frame and a second frame of a mold frame illustrated in FIG. 2, FIG. 5 is a drawing for explaining a coupling structure of the first frame and the second frame illustrated in FIG. 4, FIG. 6 is an exploded perspective view for explaining a first frame and a second frame of a mold frame illustrated in FIG. 2, FIG. 7 is a drawing for explaining a coupling structure of the first frame and the second frame illustrated in FIG. 6, and FIG. 8 is a drawing for explaining a coupling structure of a mold frame according to another example of the present invention. In FIGS. 4 to 8, the third extension portion illustrated in FIG. 3 is omitted for convenience of explanation.

[0055] Referring to FIGS. 1 to 8, a display device (1000) according to one embodiment of the present invention may include a display module (100) and an optical touch sensing device (200).

[0056] The display module (100) may include at least a display panel. The display panel may have a rectangular plate shape having long sides and short sides. The display panel may include a display area for displaying an image and a non-display area surrounding the display area.

[0057] The display panel may be a liquid crystal display panel or an organic light emitting display panel, and various other display panels may also be applied. If the display panel is a liquid crystal panel, the display module (100) may further include a backlight unit that supplies light to the display panel, in addition to the above-described display panel.

[0058] An optical touch sensing device (200) can be combined with a display module (100) to detect a user's touch. This optical touch sensing device (200) can include a guide frame (210), an optical touch sensing unit (220), a cover glass (230), and a front cover (240).

[0059] The guide frame (210) can support the lower part of the frame of the cover glass (230) and the side of the cover glass (230). This guide frame (210) can ensure that the optical touch sensing device (200) is installed in the display module (100) at an accurate position and can provide a space where the optical touch sensing unit (220) is installed.

[0060] The guide frame (210) can guide the position where the cover glass (230) providing the touch surface is installed. That is, the touch surface of the cover glass (230) can be arranged to correspond to the display area of ​​the display module (100) by the guide frame (210).

[0061] As illustrated in FIGS. 2 to 8, the guide frame (210) may include a pair of first frames (211) extending in a first direction and a pair of second frames (215) extending in a second direction intersecting the first direction. For example, the second frame (215) may extend in a direction perpendicular to the first frame (211).

[0062] The first frame (211) may include a first vertical portion (211A) corresponding to a side of the cover glass (230) and a first horizontal portion (211B) having a shape that is bent and extended from the first vertical portion (211A).

[0063] A first groove (211BA) may be provided on the upper surface of one of the first horizontal portion (211B) and the second horizontal portion (215B), for example, one end of the first horizontal portion (211B). A first catch (211BB) having a shape corresponding to the first groove (211BA) may be provided on the lower surface of the other end of the first horizontal portion (211B).

[0064] One of the first vertical portion (211A) and the second vertical portion (215A), for example, one end of the first vertical portion (211A), may be provided with a first flange (211AA) having a first through-hole (211AB) extending in a first direction and into which a screw can be inserted in a second direction. In addition, the other end of the first vertical portion (211A) may be provided with a second flange (211AC) having a second through-hole (211AD) extending in the first direction and into which a screw can be inserted in a direction perpendicular to a plane formed by the first and second directions.

[0065] The second frame (215) may include a second vertical portion (215A) corresponding to a side of the cover glass (230) and a second horizontal portion (215B) having a shape that is bent and extended from the second vertical portion (215A).

[0066] A second groove (215BA) having a shape corresponding to the first groove (211BA) may be provided on the upper surface of one end of the second horizontal portion (215B), and a second catch (215BB) having a shape corresponding to the first groove (211BA) may be provided on the lower surface of the other end of the second horizontal portion (215B).

[0067] At one end of the second vertical portion (215A), a third flange (215AA) extending in the second direction and corresponding to the second flange (211AC) and having a third aperture (215AB) corresponding to the second aperture (211AD) may be provided.

[0068] Additionally, a screw hole (215AC) corresponding to the first hole (211AB) and into which at least a portion of a screw inserted into the first hole (211AB) may be inserted may be provided at the other end of the second vertical portion (215A).

[0069] As described above, the first groove (211BA) of one end of the first horizontal portion (211B) and the second catch (215BB) of the other end of the second horizontal portion (215B) can be combined, and the first catch (211BB) of the other end of the first horizontal portion (211B) and the second groove (215BA) of one end of the second horizontal portion (215B) can be combined. Accordingly, the first frame (211) and the second frame (215) can be combined to complete the guide frame (210).

[0070] A screw may be inserted into the first through hole (211AB) and the screw hole (215AC) so that one side of the first frame (211) and the second frame (215) may be joined. Here, a portion of the screw that has passed through the first through hole (211AB) may be inserted into the screw hole (215AC), thereby joining the first frame (211) and the second frame (215).

[0071] Screws may also be inserted into the second aperture (211AD) and the third aperture (215AB) so that the other sides of the first frame (211) and the second frame (215) may be joined. Here, a portion of the screw that has passed through the second aperture (211AD) may be inserted into the third aperture (215AB), thereby joining the first frame (211) and the second frame (215). In particular, since the second aperture (211AD) is provided in the second flange (211AC) and the third aperture (215AB) is provided in the third flange (215AA), screw fastening may be performed from the outside of the guide frame (210). Accordingly, since the screws for fastening the first frame (211) and the second frame (215) do not interfere with the inner space of the guide frame (210), it is possible to implement an ultra-slim optical touch sensing device (200) and a display device (1000).

[0072] In one embodiment of the present invention, the first groove (211BA) and the second catch (215BB) are coupled, and the second groove (215BA) and the first catch (211BB) can be coupled. Therefore, even when external stress is applied, the twisting of the guide frame (210) can be prevented by the coupling structure of the first groove (211BA) and the second catch (215BB) and the coupling structure of the second groove (215BA) and the first catch (211BB).

[0073] Meanwhile, in the above, it has been described that the first groove (211BA) of one end of the first horizontal portion (211B) and the second catch (215BB) of the other end of the second horizontal portion (215B) are combined, and the first catch (211BB) of the other end of the first horizontal portion (211B) and the second groove (215BA) of one end of the second horizontal portion (215B) are combined, thereby combining the first frame (211) and the second frame (215), but the present invention is not limited thereto.

[0074] Below, with reference to FIGS. 4 and 5, another combination structure of the first frame (211) and the second frame (215) is described.

[0075] As illustrated in FIGS. 4 and 5, a first groove (211BA) may be provided on the upper surface of both ends of the first horizontal portion (211B). In addition, a second catch (215BB) having a shape corresponding to the first groove (211BA) may be provided on the lower surface of both ends of the second horizontal portion (215B).

[0076] A first flange (211AA) having a first hole (211AB) extending in a first direction and into which a screw can be inserted in a second direction may be provided at both ends of the first vertical portion (211A). In addition, a screw hole (215AC) corresponding to the first hole (211AB) and into which at least a portion of a screw inserted into the first hole (211AB) may be inserted may be provided at both ends of the second vertical portion (215A).

[0077] The first frame (211) and the second frame (215) having the structure described above can be combined to complete the guide frame (210). Here, the first groove (211BA) at both ends of the first horizontal portion (211B) and the second catches (215BB) at both ends of the second horizontal portion (215B) can be combined. Therefore, even if external stress is applied, the twisting of the guide frame (210) can be prevented by the combined structure of the first groove (211BA) and the second catches (215BB).

[0078] Additionally, a screw may be inserted into the first through hole (211AB) and the screw hole (215AC) to connect the first frame (211) and the second frame (215). By inserting a portion of the screw that has passed through the first through hole (211AB) into the screw hole (215AC), the first frame (211) and the second frame (215) may be connected.

[0079] Below, another combination structure of the first frame (211) and the second frame (215) is described with reference to FIGS. 6 to 8.

[0080] As illustrated in FIGS. 6 to 8, a second groove (215BA) may be provided on the upper surface of both ends of the second horizontal portion (215B). In addition, a first catch (211BB) having a shape corresponding to the second groove (215BA) may be provided on the lower surface of both ends of the first horizontal portion (211B).

[0081] A second flange (211AC) may be provided at both ends of the first vertical portion (211A) that extends in the first direction and has a second through hole (211AD) into which a screw can be inserted in a direction perpendicular to the plane formed by the first and second directions. A third flange (215AA) may be provided at both ends of the second vertical portion (215A) that has a third through hole (215AB) corresponding to the second through hole (211AD) and extends in the second direction.

[0082] The first frame (211) and the second frame (215) having the structure described above can be combined to complete the guide frame (210). Here, the second grooves (215BA) at both ends of the second horizontal portion (215B) and the first catches (211BB) at both ends of the first horizontal portion (211B) can be combined. Therefore, even if external stress is applied, the twisting of the guide frame (210) can be prevented by the combined structure of the second grooves (215BA) and the first catches (211BB).

[0083] Additionally, screws may be inserted into the second hole (211AD) and the third hole (215AB) so that the first frame (211) and the second frame (215) may be combined. Here, a portion of the screw that has passed through the second hole (211AD) may be inserted into the third hole (215AB), so that the first frame (211) and the second frame (215) may be combined.

[0084] In addition, as illustrated in FIG. 8, a substrate fixing member (227) may be provided on the portion where the first frame (211) and the second frame (215) are coupled, i.e., the portion where the second flange (211AC) and the third flange (215AA) are coupled. The substrate fixing member (227) is positioned in close contact with the side portions of the first circuit board (221B) and the second circuit board (225B), thereby preventing the first circuit board (221B) and the second circuit board (225B) from moving due to external impact or stress.

[0085] The optical touch sensing unit (220) includes a light emitting unit (221) and a light receiving unit (225), and can be installed in the guide frame (210). In one embodiment of the present invention, the light emitting unit (221) and the light receiving unit (225) of the optical touch sensing unit (220) include a movement prevention unit (221D, 225D) to prevent movement, and thus, the touch sensitivity can be improved.

[0086] The light emitting unit (221) may include a light source (221A), a first circuit board (221B), a first optical filter (221C), and a first flow prevention unit (221D).

[0087] The light source (221A) is provided at a certain distance from the first optical filter (221C) and can be mounted on the first circuit board (221B). The light source (221A) can generate and emit light, for example, infrared rays. The light emitted from the light source (221A) can be incident on the light receiving portion (225).

[0088] The first circuit board (221B) may have a shape extending in a direction perpendicular to the display panel or cover glass (230) of the display module (100). The first circuit board (221B) provides a space in which a light source (221A) can be mounted, and may be installed in a part of the guide frame (210), for example, one of a pair of first frames (211) and one of a pair of second frames (215). Here, the first vertical portion (211A) of the first frame (211) and the second vertical portion (215A) of the second frame (215) may provide a space in which the first circuit board (221B) is installed.

[0089] For example, the first vertical portion (211A) and the second vertical portion (215A) may include a first extension portion (210A) that extends in a direction perpendicular to the cover glass (230) and covers a side of the display module (100), a second extension portion (210B) that is bent from the first extension portion (210A), and a third extension portion (210C) that is bent from the second extension portion (210B) and is parallel to the first extension portion (210A). Here, a first circuit board (221B) may be installed within a space formed by the first extension portion (210A), the second extension portion (210B), and the third extension portion (210C). In addition, a recess (210D) may be provided in the first extension portion (210A) of the first frame (211) and the second frame (215), and a step may be provided on the edge of the recess (210D). The first circuit board (221B) may be installed in the first frame (211) and the second frame (215) in a form that is inserted into the step-shaped area of ​​the recess (210D) formed by the step. In addition, the recess (210D) may space the first frame (211) and the second frame (215) from the first circuit board (221B).

[0090] Meanwhile, in one embodiment of the present invention, it has been described as an example that the first circuit board (221B) is installed in one of the pair of first frames (211) and one of the pair of second frames (215), but it is not limited thereto. For example, the first circuit board (221B) may be installed in only one of the pair of first frames (211) or in only one of the pair of second frames (215).

[0091] The first optical filter (221C) is arranged at the upper end of the first vertical portion (211A) and the second vertical portion (215A), and may be provided between the light source (221A) and the light receiving portion (225) in the light propagation path. The first optical filter (221C) may filter out light having a wavelength other than that used for touch detection among the light emitted from the light source (221A). For example, the first optical filter (221C) may transmit infrared rays among the light emitted from the light source (221A), and filter out light other than infrared rays.

[0092] At least a portion of the first optical filter (221C) may be provided with a first reflective surface (221CR) inclined along the light propagation path. A first reflective member (not shown) capable of reflecting light may be provided on the first reflective surface (221CR). Light reflected from the first reflective surface (221CR) may travel along the surface of the cover glass (230) to the light receiving unit (225).

[0093] On a plane parallel to the cover glass (230), the first optical filter (221C) may not overlap with the cover glass (230). For example, on a plane parallel to the cover glass (230), the first optical filter (221C) may be positioned spaced apart from the cover glass (230).

[0094] The first flow prevention unit (221D) may be positioned between the first circuit board (221B) and the third extension unit (210C). Furthermore, the first flow prevention unit (221D) may be formed of an elastic material. For example, the first flow prevention unit (221D) may be formed of urethane foam.

[0095] The first flow prevention unit (221D) can guide the first circuit board (221B) on which the light source (221A) is mounted so that it is installed in an accurate position. For example, when the first circuit board (221B) is installed in the guide frame (210), the first flow prevention unit (221D) can guide the installation position of the first circuit board (221B) on which the light source (221A) is mounted. Therefore, the first flow prevention unit (221D) can improve the touch sensitivity of the optical touch detection device (200) according to one embodiment of the present invention.

[0096] The first flow prevention part (221D) made of an elastic material can fix the position of the first circuit board (221B) and prevent movement of the light source (221A) and the first circuit board (221B) even when an external impact occurs.

[0097] As described above, the first movement prevention unit (221D) can guide the installation position of the first circuit board (221B) and simultaneously fix the positions of the light source (221A) and the first circuit board (221B). Therefore, the first movement prevention unit (221D) can ensure that the first circuit board (221B) is installed in the correct position and prevent movement of the light source (221A) and the first circuit board (221B) due to external impact.

[0098] In a typical touch sensing device, the circuit board may move within the guide frame due to external impact or stress. If the circuit board moves, light emitted from a light source mounted on the circuit board cannot accurately enter the light-receiving element. However, an optical touch sensing device (200) according to an embodiment of the present invention includes a first movement prevention member (221D) that can fix the first circuit board (221B). Since the first movement prevention member (221D) fixes the first circuit board (221B), movement of the light source (221A) and the first circuit board (221B) within the guide frame (210) can be prevented even when an external impact is applied. Therefore, even when an external impact or stress occurs, light emitted from the light source (221A) can accurately enter the light-receiving element (225A).

[0099] As described above, the first flow prevention unit (221D) guides the light source (221A) and the first circuit board (221B) to be installed in the correct position, and prevents flow, thereby enabling the light emitting unit (221) and the light receiving unit (225) to be accurately aligned.

[0100] In one embodiment of the present invention, the light emitting portion (221) may face the light receiving portion (225). Accordingly, light emitted from the light source (221A) of the light emitting portion (221), for example, infrared light, may be directed toward the light receiving portion (225) along the surface of the cover glass (230).

[0101] The light receiving unit (225) may include a light receiving element (225A), a second circuit board (225B), a second optical filter (225C), and a second flow prevention unit (225D).

[0102] The light receiving element (225A) is provided at a certain distance from the second optical filter (225C) and can be mounted on the second circuit board (225B). The light receiving element (225A) can detect light emitted from the light source (221A) and convert it into an electrical signal. Therefore, the light receiving element (225A) must be positioned corresponding to the path along which light travels.

[0103] The second circuit board (225B) may have a shape extending in a direction perpendicular to the display panel or cover glass (230) of the display module (100). The second circuit board (225B) provides a space in which a light-receiving element (225A) can be mounted, and may be installed in a part of the guide frame (210), for example, the other of a pair of first frames (211) and the other of a pair of second frames (215). Here, the first vertical portion (211A) of the first frame (211) and the second vertical portion (215A) of the second frame (215) may provide a space in which the second circuit board (225B) is installed. For example, another one of the first frames (211) and another one of the second frames (215) may have the same shape as the first frame (211) and the second frame (215) on which the first circuit board (221B) described above is installed.

[0104] The second circuit board (225B) can be installed in the first frame (211) and the second frame (215) in a form that is inserted into the step-shaped area of ​​the step-shaped portion (210D) formed by the step-shaped portion. In addition, the step-shaped portion (210D) can separate the second frame (215) and the first circuit board (221B) from the second frame (215).

[0105] Meanwhile, in one embodiment of the present invention, it has been described as an example that the second circuit board (225B) is installed in the other of the pair of first frames (211) and the other of the pair of second frames (215), but it is not limited thereto. For example, the second circuit board (225B) may be installed in only the other of the pair of first frames (211) or may be installed in only the other of the pair of second frames (215).

[0106] The second optical filter (225C) is arranged at the upper end of the first vertical portion (211A) and the second vertical portion (215A), and may be provided between the light emitting portion (221) and the light receiving element (225A) in the light propagation path. The second optical filter (225C) can filter light other than wavelengths corresponding to light detectable by the light receiving portion (225). For example, the second optical filter (225C) can filter light other than infrared rays. Therefore, the second optical filter (225C) can prevent the light receiving element (225A) from malfunctioning due to external natural light or visible light from an image implemented in the display module (100).

[0107] At least a portion of the second optical filter (225C) may be provided with a second reflective surface (225CR) inclined along the light propagation path. A second reflective member (not shown) capable of reflecting light may be provided on the second reflective surface (225CR). Light reflected from the second reflective surface (225CR) may proceed to the light receiving element (225A).

[0108] On a plane parallel to the cover glass (230), the second optical filter (225C) may not overlap with the cover glass (230). For example, on a plane parallel to the cover glass (230), the second optical filter (225C) may be positioned spaced apart from the cover glass (230).

[0109] The second flow prevention unit (225D) may be positioned between the second circuit board (225B) and the third extension unit (210C). In addition, the second flow prevention unit (225D) may be made of an elastic material, like the first flow prevention unit (221D).

[0110] The second flow prevention unit (225D) can guide the second circuit board (225B) on which the light receiving element (225A) is mounted so that it is installed in the correct position. For example, when the second circuit board (225B) on which the light receiving element (225A) is mounted is installed in the guide frame (210), the second flow prevention unit (225D) can guide the installation position of the second circuit board (225B) on which the light receiving element (225A) is mounted.

[0111] The second flow prevention part (225D) made of an elastic material can fix the position of the second circuit board (225B) and prevent movement of the light receiving element (225A) and the second circuit board (225B) even when an external impact occurs.

[0112] As described above, the second movement prevention unit (225D) can guide the installation position of the second circuit board (225B) and simultaneously fix the position of the second circuit board (225B). Therefore, the second movement prevention unit (225D) can ensure that the light receiving element (225A) and the second circuit board (225B) are installed in the correct position, and can prevent movement of the light receiving element (225A) and the second circuit board (225B) due to external impact.

[0113] In a typical touch sensing device, the circuit board may move within the guide frame due to external impact or stress, and when the circuit board moves, the light-receiving element mounted on the circuit board moves out of alignment with the light source. However, an optical touch sensing device (200) according to an embodiment of the present invention includes a second movement prevention part (225D) that can fix a second circuit board (225B). Since the second movement prevention part (225D) fixes the second circuit board (225B), even when an external impact is applied, the movement of the light-receiving element (225A) and the second circuit board (225B) within the guide frame (210) can be prevented. Therefore, even when an external impact or stress occurs, the light emitted from the light source (221A) can be accurately incident on the light-receiving element (225A).

[0114] As described above, the second flow prevention unit (225D) guides the light receiving element (225A) and the second circuit board (225B) to be installed in the correct position, and prevents flow, thereby enabling the light emitting unit (221) and the light receiving unit (225) to be accurately aligned.

[0115] A cover glass (230) may be provided on the upper portion of the display module (100). The cover glass (230) can absorb external impact and prevent the display panel of the display module (100) from being damaged.

[0116] The cover glass (230) can provide a touch surface that detects touch coordinates by a user's hand or pen, etc. That is, the cover glass (230) can constitute a main part of the optical touch sensing device (200) together with the optical touch sensing unit (220).

[0117] An adhesive member (AD) may be provided between the cover glass (230) and the guide frame (210). The adhesive member (AD) may be made of a double-sided tape or adhesive.

[0118] A front cover (240) is provided on the side of the cover glass (230), the guide frame (210), and the optical touch detection unit (220), so as to prevent the side of the cover glass (230), the guide frame (210), and the optical touch detection unit (220) from being exposed to the outside. This front cover (240) can fix the cover glass (230), the guide frame (210), and the optical touch detection unit (220) to the display module (100).

[0119] As described above, an optical touch sensing device (200) according to one embodiment of the present invention may include a guide frame (210), an optical touch sensing unit (220), a cover glass (230), and a front cover (240).

[0120] Below, with reference to FIGS. 9 to 12, an assembly process of a display device (1000) including an optical touch sensing device (200) according to one embodiment of the present invention is described.

[0121] FIGS. 9 to 12 are drawings for explaining the assembly process of a display device according to one embodiment of the present invention.

[0122] First, referring to FIG. 9, a guide frame (210) is installed along the edge of the display module (100). As illustrated in FIGS. 4 to 8, the guide frame (210) may be installed in a form in which one end of the first frame (211) is coupled to the other end of the second frame (215).

[0123] Meanwhile, although not shown in FIGS. 9 to 12, a first flow prevention part (221D) may be provided within the first vertical part (211A) of the first frame (211), and a second flow prevention part (225D) may be provided within the second vertical part (215A) of the second frame (215).

[0124] Then, a first circuit board (221B) and a second circuit board (225B) are installed on a pair of first frames (211) and a pair of second frames (215). The installation positions of the first circuit board (221B) and the second circuit board (225B) are guided by the first flow prevention part (221D) and the second flow prevention part (225D), and flow is prevented after installation.

[0125] Here, the first circuit board (221B) may be installed on one of the pair of first frames (211) and one of the pair of second frames (215), and the second circuit board (225B) may be installed on the other of the pair of first frames (211) and the other of the pair of second frames (215). That is, the first circuit board (221B) and the second circuit board (225B) may be arranged to face each other.

[0126] Referring to Fig. 10, after the first circuit board (221B) and the second circuit board (225B) are installed, the first optical filter (221C) and the second optical filter (225C) are installed. The first optical filter (221C) may be installed in the first frame (211) and the second frame (215) on which the first circuit board (221B) is installed, and the second optical filter (225C) may be installed in the first frame (211) and the second frame (215) on which the second circuit board (225B) is installed.

[0127] After installing the first optical filter (221C) and the second optical filter (225C), an adhesive member (AD) for attaching the cover glass (230) is placed on the upper surface of the guide frame (210).

[0128] Referring to Fig. 11, after placing an adhesive member (AD) on the upper surface of the guide frame (210), a cover glass (230) is installed. The cover glass (230) can be fixed to the upper surface of the guide frame (210) by the adhesive member (AD).

[0129] Referring to Fig. 12, after installing the cover glass (230), the front cover (240) is installed.

[0130] Below, display devices according to other embodiments of the present invention will be described with reference to FIGS. 13 to 15. FIGS. 13 to 15 are cross-sectional views illustrating display devices according to other embodiments of the present invention.

[0131] For convenience of explanation, the display devices illustrated in FIGS. 13 to 15 will be described mainly with respect to differences from the display devices illustrated in FIGS. 1 to 12, and identical configurations may be briefly described or omitted.

[0132] Referring to FIG. 13, an optical touch sensing unit (220) of a display device (1000) according to another embodiment of the present invention includes a light emitting unit (221) and a light receiving unit (225). The light emitting unit (221) may include a light source (221A), a first circuit board (221B), a first optical filter (221C), a first flow prevention unit (221D), and a third flow prevention unit (221E), and the light receiving unit (225) may include a light receiving element (225A), a second circuit board (225B), a second optical filter (225C), a second flow prevention unit (225D), and a fourth flow prevention unit (225E). That is, the light emitting unit (221) and the light receiving unit (225) of the optical touch sensing unit (220) may further include a third flow prevention unit (221E) and a fourth flow prevention unit (225E), respectively.

[0133] In the light-emitting portion (221), the first flow-preventing portion (221D) may be disposed between the first circuit board (221B) and the third extension portion (210C), and the third flow-preventing portion (221E) may be disposed in the concave portion (210D) of the first frame (211) and the second frame (215). The third flow-preventing portion (221E) may be made of an elastic material like the first flow-preventing portion (221D). The third flow-preventing portion (221E), together with the first flow-preventing portion (221D), may guide the installation position of the first circuit board (221B) and, at the same time, prevent the light source (221A) and the first circuit board (221B) from moving due to external impact.

[0134] In the light receiving unit (225), the second flow prevention unit (225D) may be arranged between the second circuit board (225B) and the third extension unit (210C), and the fourth flow prevention unit (225E) may be arranged in the concave portion (210D) of the first frame (211) and the second frame (215). The fourth flow prevention unit (225E) may be made of an elastic material like the first flow prevention unit (221D). The fourth flow prevention unit (225E), together with the second flow prevention unit (225D), may guide the installation position of the second circuit board (225B) and, at the same time, prevent the light receiving element (225A) and the second circuit board (225B) from moving due to external impact.

[0135] Referring to FIG. 14, an optical touch sensing unit (220) of a display device (1000) according to another embodiment of the present invention includes a light emitting unit (221) and a light receiving unit (225). The light emitting unit (221) includes a light source (221A), a first circuit board (221B), a first optical filter (221C), and a first flow prevention unit (221D), and the light receiving unit (225) may include a light receiving element (225A), a second circuit board (225B), a second optical filter (225C), and a second flow prevention unit (225D).

[0136] The light source (221A) may be provided in close contact with the first optical filter (221C) without being separated from the first optical filter (221C), and may be mounted on the first circuit board (221B). The light source (221A) may generate and emit light, for example, infrared light.

[0137] The light receiving element (225A) may be provided in close contact with the second optical filter (225C) without being separated from the second optical filter (225C), and may be mounted on the second circuit board (225B).

[0138] Referring to FIG. 15, a guide frame (210) of a display device (1000) according to another embodiment of the present invention may have a ridge (210D) unlike the guide frame (210) of the display device illustrated in FIGS. 1 to 12, but may not have a step provided on the edge of the ridge (210D).

[0139] Here, the first circuit board (221B) may have a shape extending in a direction perpendicular to the display panel of the display module (100) between the second extension (210B) of the first frame (211) and the second frame (215) and the second optical filter (225C).

[0140] Additionally, the second circuit board (225B) may have a shape extending in a direction perpendicular to the display panel of the display module (100) between the second extension (210B) of the first frame (211) and the second frame (215) and the second optical filter (225C).

[0141] FIG. 16 is an exploded perspective view according to another embodiment of the display device illustrated in FIG. 1, FIG. 17 is a cross-sectional view of a portion of the display device illustrated in FIG. 16, FIG. 18 is an exploded perspective view for explaining the first frame and the second frame of the mold frame illustrated in FIG. 16 and their combined structure, FIG. 19 is a drawing for explaining a substrate fixing member provided on a portion where the first frame and the second frame are combined illustrated in FIG. 18, FIG. 20 is a drawing for explaining firmly connecting a portion where the first frame and the second frame are combined illustrated in FIG. 18 using a connector, FIGS. 21 and 22 are drawings for explaining the combination of a first circuit board and a guide frame, FIG. 23 is a drawing for explaining a first flow-preventing frame and a second flow-preventing frame, FIG. 24 is a drawing for explaining a guide frame, a first circuit board, a second circuit board, a first flow-preventing frame, and a second flow-preventing frame, and FIG. 25 is a drawing for explaining a front cover illustrated in FIG. 16, FIG. 26 is a drawing for explaining a corner bracket and a panel support bracket provided at the lower portion of the portion where the first frame and the second frame shown in FIG. 18 are combined.

[0142] Referring to FIG. 1 and FIG. 16 to FIG. 26, a display device (1000) according to one embodiment of the present invention may include a display module (100) and an optical touch sensing device (300). The optical touch sensing device (300) illustrated in FIG. 16 and FIG. 26 corresponds to the touch sensing device (200) illustrated in FIG. 1 and FIG. 3.

[0143] An optical touch sensing device (300) can be combined with a display module (100) to detect a user's touch. The optical touch sensing device (300) can include a guide frame (310), an optical touch sensing unit (320), a cover glass (330), a front cover (340), and a corner bracket (350).

[0144] The guide frame (310) can support the lower part of the frame of the cover glass (330) and the side of the cover glass (330). This guide frame (310) can ensure that the optical touch sensing device (300) is installed in the display module (100) at an accurate position and can provide a space for the optical touch sensing unit (320) to be installed.

[0145] The guide frame (310) can guide the position where the cover glass (330) providing the touch surface is installed. That is, the touch surface of the cover glass (330) can be positioned corresponding to the display area of ​​the display module (100) by the guide frame (310).

[0146] As illustrated in FIGS. 16 to 20, the guide frame (310) may include a pair of first frames (311) extending in a first direction and a pair of second frames (315) extending in a second direction intersecting the first direction. For example, the second frame (315) may extend in a direction perpendicular to the first frame (311).

[0147] The first frame (311) may include a first vertical portion (311A) corresponding to a side of the cover glass (330) and a first horizontal portion (311B) having a shape that is bent and extended from the first vertical portion (311A).

[0148] The second frame (315) may include a second vertical portion (315A) corresponding to a side of the cover glass (330) and a second horizontal portion (315B) having a shape that is bent and extended from the second vertical portion (315A).

[0149] A groove (315BA) may be provided on the upper surface of one of the first horizontal portion (311B) and the second horizontal portion (315B), for example, on both ends of the second horizontal portion (315B). A catch (311BB) having a shape corresponding to the groove (315BA) may be provided on the lower surface of the other of the first horizontal portion (311B) and the second horizontal portion (315B), for example, on both ends of the first horizontal portion (311B). Meanwhile, in one embodiment of the present invention, it has been described as an example that the groove (315BA) is provided on both ends of one of the first horizontal portion (311B) and the second horizontal portion (315B), and the catch (311BB) is provided on both ends of the other, but the present invention is not limited thereto. For example, a groove (315BA) may be provided at one end of one of the first horizontal portion (311B) and the second horizontal portion (315B), and a catch (311BB) may be provided at the other end of one of the first horizontal portion (311B) and the second horizontal portion (315B). In this case, a catch (311BB) may be provided at one end of the other of the first horizontal portion (311B) and the second horizontal portion (315B), and a groove (315BA) may be provided at the other end of the other of the first horizontal portion (311B) and the second horizontal portion (315B).

[0150] A first flange (311AC) may be provided at both ends of the first vertical portion (311A) that extends in a first direction and has a first through-hole (311AD) into which a screw can be inserted in a direction perpendicular to a plane formed by the first and second directions. A second flange (315AA) may be provided at both ends of the second vertical portion (315A) that has a second through-hole (315AB) corresponding to the first through-hole (311AD) and extends in the second direction.

[0151] Meanwhile, in one embodiment of the present invention, it has been described as an example that a first flange (311AC) and a second flange (315AA) are provided at both ends of the first vertical portion (311A) and the second vertical portion (315A), but it is not limited thereto. For example, a first flange (311AC) may be provided at one end of the first vertical portion (311A), and a second flange (315AA) may be provided at the other end of the first vertical portion (311A). In addition, a first flange (311AC) may be provided at one end of the second vertical portion (315A), and a second flange (315AA) may be provided at the other end of the second vertical portion (315A).

[0152] A first frame (311) and a second frame (315) having the structure described above can be combined to complete a guide frame (310). Here, a groove (315BA) and a catch (311BB) at both ends of the first horizontal portion (311B) and the second horizontal portion (315B) can be combined. Therefore, even if external stress is applied, the twisting of the guide frame (310) can be prevented by the combined structure of the groove (315BA) and the catch (311BB).

[0153] As illustrated in Fig. 18, screws may be inserted into the first hole (311AD) and the second hole (315AB) so that the first frame (311) and the second frame (315) may be coupled. Here, a portion of the screw that has passed through the first hole (311AD) may be inserted into the second hole (315AB), so that the first frame (311) and the second frame (315) may be coupled.

[0154] As illustrated in FIG. 19, a substrate fixing member (327) may be provided on a portion where the first frame (311) and the second frame (315) are coupled, i.e., a portion where the first flange (311AC) and the second flange (315AA) are coupled. The substrate fixing member (327) is positioned in close contact with the side portions of the first circuit board (321B) and the second circuit board (325B), thereby preventing the first circuit board (321B) and the second circuit board (325B) from moving due to external impact or stress. In one embodiment of the present invention, the substrate fixing member (327) may be fixed to a portion where the first flange (311AC) and the second flange (315AA) are coupled. Additionally, the substrate fixing member (327) may be fixed to the first flange (311AC) and the second flange (315AA) via screws for coupling the first flange (311AC) and the second flange (315AA).

[0155] In one embodiment of the present invention, as illustrated in FIG. 20, a first connector (321E) may be provided on a first circuit board (321B), and a second connector (325E) may be provided on a second circuit board (325B). The first connector (321E) and the second connector (325E) may be electrically connected via a wiring cable (329), such as a TCP (Tape Carrier Package). Accordingly, the first circuit board (321B) and the second circuit board (325B) may be electrically connected.

[0156] The optical touch sensing unit (320) includes a light emitting unit (321) and a light receiving unit (325), and can be installed in the guide frame (310). The light emitting unit (321) and the light receiving unit (325) can have similar configurations. For example, the configurations of the light emitting unit (321) and the light receiving unit (325) can be the same except for the light source (321A) and the light receiving element (325A).

[0157] Below, each of the light emitting unit (321) and the light receiving unit (325) is described in more detail.

[0158] The light emitting unit (321) may include a light source (321A), a first circuit board (321B), a first optical filter (321C), and a first flow prevention frame (321D).

[0159] The light source (321A) is provided at a certain distance from the first optical filter (321C) and can be mounted on the first circuit board (321B). The light source (321A) can generate and emit light, for example, infrared rays. The light emitted from the light source (321A) can be incident on the light receiving portion (325).

[0160] The first circuit board (321B) may have a shape extending in a direction perpendicular to the display panel or cover glass (330) of the display module (100). The first circuit board (321B) may provide a space in which a light source (321A) may be mounted. The first circuit board (321B) may be installed on a part of the guide frame (310), for example, on one of a pair of first frames (311) and one of a pair of second frames (315), via a bonding member. Here, the bonding member may be a double-sided tape or an adhesive.

[0161] In one embodiment of the present invention, a first coupling protrusion (311AP) may be provided on a portion of the first frame (311) and the second frame (315), and a first coupling hole (321BA) may be provided on the first circuit board (321B). The first coupling hole (321BA) is arranged to correspond to the first coupling protrusion (311AP), and the first coupling protrusion (311AP) may be inserted into the first coupling hole (321BA). Therefore, as illustrated in FIG. 21, the first coupling protrusion (311AP) of the first frame (311) and the second frame (315) may be coupled with the first coupling hole (321BA) to guide the installation position of the first circuit board (321B).

[0162] Meanwhile, in one embodiment of the present invention, the first coupling hole (321BA) of the first circuit board (321B) is coupled with the first coupling protrusion (311AP) of the first frame (311) and the second frame (315) as an example, but the present invention is not limited thereto. For example, as illustrated in FIG. 22, separate holes are provided in the first frame (311) and the second frame (315), the first coupling hole (321BA) of the first circuit board (321B) is arranged to correspond to the separate hole, and screws may be inserted into the first coupling hole (321BA) and the separate hole so that the first frame (311) and the second frame (315) and the first circuit board (321B) are coupled.

[0163] In one embodiment of the present invention, the first vertical portion (311A) of the first frame (311) and the second vertical portion (315A) of the second frame (315) may provide a space in which the first circuit board (321B) is installed. For example, the first vertical portion (311A) and the second vertical portion (315A) may include a first extension portion (310A) that extends in a direction perpendicular to the cover glass (330) to cover a side of the display module (100), and a second extension portion (310B) that is bent from the first extension portion (310A). Here, the first circuit board (321B) may be installed in a form in which the surface opposite to the surface on which the light source (321A) is arranged is in close contact with the first extension portion (310A). Additionally, one end of the first circuit board (321B), for example, the lower end of the first circuit board (321B), may be in contact with the second extension (310B) and supported by the second extension (310B).

[0164] In addition, as illustrated in Fig. 17, a yoke (310D) may be provided in the first extension portion (310A) of the first frame (311) and the second frame (315). The yoke (310D) as described above may separate the first frame (311) and the second frame (315) from the first circuit board (321B).

[0165] Meanwhile, in one embodiment of the present invention, it has been described as an example that the first circuit board (321B) is installed in one of the pair of first frames (311) and one of the pair of second frames (315), but it is not limited thereto. For example, the first circuit board (321B) may be installed in only one of the pair of first frames (311) or in only one of the pair of second frames (315).

[0166] The first optical filter (321C) is arranged at the upper end of the first vertical portion (311A) and the second vertical portion (315A), and may be provided between the light source (321A) and the light receiving portion (325) in the light propagation path. The first optical filter (321C) may filter out light having a wavelength other than that used for touch detection among the light emitted from the light source (321A). For example, the first optical filter (321C) may transmit infrared rays among the light emitted from the light source (321A), and filter out light other than infrared rays.

[0167] The first optical filter (321C) can be installed on the upper portions of the first vertical portion (311A) and the second vertical portion (315A) through a bonding member such as double-sided tape or adhesive.

[0168] At least a portion of the first optical filter (321C) may be provided with a first reflective surface (321CR) inclined along the light propagation path. A first reflective member (not shown) capable of reflecting light may be provided on the first reflective surface (321CR). Light reflected from the first reflective surface (321CR) may travel along the surface of the cover glass (330) to the light receiving unit (325).

[0169] On a plane parallel to the cover glass (330), the first optical filter (321C) may not overlap with the cover glass (330). For example, on a plane parallel to the cover glass (330), the first optical filter (321C) may be positioned spaced apart from the cover glass (330). Accordingly, the area lost in a portion of the cover glass (330), particularly in the edge area of ​​the cover glass (330), may be minimized.

[0170] The first flow prevention frame (321D) is arranged between the first circuit board (321B) and the front cover (340) to prevent the first circuit board (321B) from flowing. The first flow prevention frame (321D) may include a first region (321DA) extending parallel to the first frame (311) and the second frame (315), a second region (321DB) extending between both ends of the first region (321DA) toward the first circuit board (321B), and a third region (321DC) extending parallel to the second region (321DB) from the lower end of the first region (321DA).

[0171] As illustrated in FIGS. 23 and 24, a first screw hole (321DAH) into which a screw can be inserted is provided in the lower portion of the first region (321DA), for example, in the region corresponding to the second extension portion (310B), and a second screw hole (311BH) corresponding to the first screw hole (321DAH) can be provided in the second extension portion (310B). When screws are coupled to the first screw hole (321DAH) and the second screw hole (311BH), the first region (321DA) and the second extension portion (310B) can be fastened.

[0172] By fastening the first region (321DA) and the second extension (310B), the second region (321DB) can apply pressure to the first circuit board (321B). By the pressure applied by the second region (321DB) of the first flow prevention frame (321D), the flow of the first circuit board (321B) can be prevented.

[0173] The upper surface of the third region (321DC) may be in contact with the lower surface of the second extension portion (310B), and at least a portion of the second extension portion (310B) may be inserted into the space formed by the first region (321DA), the second region (321DB), and the third region (321DC). Accordingly, the third region (321DC) may support the second extension portion (310B) from below.

[0174] Additionally, the extended length of the third region (321DC) may be greater than the extended length of the second region (321DB). This is because the distance between the first region (321DA) and the first extension (310A) is greater than the distance between the first region (321DA) and the first circuit board (321B).

[0175] The first flow prevention frame (321D) as described above includes a first region (321DA), a second region (321DB), and a third region (321DC), and the lower portion of the first region (321DA) is coupled to the second extension portion (310B) via a screw, and the first region (321DA) can be pressed by the front cover (340). Accordingly, the upper portion of the first region (321DA) applies pressure to the first optical filter (321C), and the first optical filter (321C) applied pressure by the first region (321DA) can apply pressure to the upper portion of the first circuit board (321B). In addition, the second region (321DB) can apply pressure to the lower portion of the first circuit board (321B). As the first region (321DA) and the second region (321DB) apply pressure to the first circuit board (321B), the flow of the first circuit board (321B) can be prevented.

[0176] As described above, the first flow prevention frame (321D) can prevent the light source (321A) and the first circuit board (321B) from flowing due to external impact by pressing the first circuit board (321B).

[0177] In a typical touch sensing device, the first circuit board (321B) may move within the guide frame (310) due to external impact or stress. If the first circuit board (321B) moves, the light emitted from the light source (321A) mounted on the first circuit board (321B) cannot accurately enter the light receiving element (325A). However, in the optical touch sensing device (300) according to one embodiment of the present invention, the first circuit board (321B) is fixed by the first movement prevention frame (321D) and movement can be prevented. Therefore, even if an external impact or stress occurs, the light emitted from the light source (321A) can accurately enter the light receiving element (325A).

[0178] In one embodiment of the present invention, the light emitting portion (321) may face the light receiving portion (325). Accordingly, light emitted from the light source (321A) of the light emitting portion (321), for example, infrared light, may be directed toward the light receiving portion (325) along the surface of the cover glass (330).

[0179] The light receiving unit (325) may include a light receiving element (325A), a second circuit board (325B), a second optical filter (325C), and a second flow prevention frame (325D).

[0180] The light receiving element (325A) is provided at a certain distance from the second optical filter (325C) and can be mounted on the second circuit board (325B). The light receiving element (325A) can detect light emitted from the light source (321A) and convert it into an electrical signal. Therefore, the light receiving element (325A) must be positioned corresponding to the path along which the light travels.

[0181] The second circuit board (325B) may have a shape extending in a direction perpendicular to the display panel or cover glass (330) of the display module (100). The second circuit board (325B) may provide a space in which a light-receiving element (325A) may be mounted.

[0182] The second circuit board (325B) can be installed to a part of the guide frame (310), for example, to the other one of the pair of first frames (311) and the other one of the pair of second frames (315), via a bonding member. Here, the bonding member can be a double-sided tape or an adhesive.

[0183] In one embodiment of the present invention, a second coupling protrusion (315AP) may be provided on a portion of the first frame (311) and the second frame (315), and a second coupling hole (325BA) may be provided on the second circuit board (325B). The second coupling hole (325BA) is arranged to correspond to the second coupling protrusion (315AP) provided on a portion of the first frame (311) and the second frame (315), and the second coupling protrusion (315AP) may be inserted into the second coupling hole (325BA). Therefore, as illustrated in FIG. 21, the second coupling protrusions (315AP) of the first frame (311) and the second frame (315) may be coupled with the second coupling hole (325BA) to guide the installation position of the second circuit board (325B).

[0184] Meanwhile, in one embodiment of the present invention, the second coupling hole (325BA) of the second circuit board (325B) is coupled with the second coupling protrusion (315AP) of the first frame (311) and the second frame (315), but the present invention is not limited thereto. For example, as illustrated in FIG. 22, separate holes are provided in the first frame (311) and the second frame (315), the second coupling hole (325BA) of the second circuit board (325B) is arranged to correspond to the separate hole, and screws may be inserted into the second coupling hole (325BA) and the separate hole so that the first frame (311) and the second frame (315) and the second circuit board (325B) are coupled.

[0185] In one embodiment of the present invention, the first vertical portion (311A) of the first frame (311) and the second vertical portion (315A) of the second frame (315) can provide a space in which the second circuit board (325B) is installed. For example, the other one of the first frames (311) and the other one of the second frames (315) can have the same shape as the first frame (311) and the second frame (315) in which the first circuit board (321B) described above is installed. Here, the second circuit board (325B) can be installed in a form in which the surface opposite to the surface on which the light-receiving element (325A) is arranged is in close contact with the first extension portion (310A). Additionally, one end of the second circuit board (325B), for example, the lower end of the second circuit board (325B), may be in contact with the second extension (310B) and supported by the second extension (310B).

[0186] The second circuit board (325B) can be installed in the first frame (311) and the second frame (315) in a form that is inserted into the step-shaped area of ​​the step-shaped portion (310D) formed by the step-shaped portion. In addition, the step-shaped portion (310D) can separate the second frame (315) and the first circuit board (321B) from the second frame (315).

[0187] Meanwhile, in one embodiment of the present invention, it has been described as an example that the second circuit board (325B) is installed in the other one of the pair of first frames (311) and the other one of the pair of second frames (315), but it is not limited thereto. For example, the second circuit board (325B) may be installed only in the other one of the pair of first frames (311) or only in the other one of the pair of second frames (315).

[0188] The second optical filter (325C) can be installed on the upper portions of the first vertical portion (311A) and the second vertical portion (315A) through a bonding member. Here, the bonding member can be a double-sided tape or an adhesive.

[0189] The second optical filter (325C) may be provided between the light emitting unit (321) and the light receiving element (325A) in the light propagation path. The second optical filter (325C) may filter light other than wavelengths corresponding to light detectable by the light receiving unit (325). For example, the second optical filter (325C) may filter light other than infrared rays. Therefore, the second optical filter (325C) may prevent the light receiving element (325A) from malfunctioning due to external natural light or visible light from an image implemented in the display module (100).

[0190] At least a portion of the second optical filter (325C) may be provided with a second reflective surface (325CR) inclined along the light propagation path. A second reflective member (not shown) capable of reflecting light may be provided on the second reflective surface (325CR). Light reflected from the second reflective surface (325CR) may proceed to the light receiving element (325A).

[0191] On a plane parallel to the cover glass (330), the second optical filter (325C) may not overlap with the cover glass (330). For example, on a plane parallel to the cover glass (330), the second optical filter (325C) may be positioned spaced apart from the cover glass (330).

[0192] The second flow prevention frame (325D) is placed between the second circuit board (325B) and the front cover (340) to prevent the flow of the second circuit board (325B).

[0193] The second flow prevention frame (325D) may include a fourth region (325DA) extending parallel to the first frame (311) and the second frame (315), a fifth region (325DB) extending toward the second circuit board (325B) between both ends of the fourth region (325DA), and a sixth region (325DC) extending parallel to the fifth region (325DB) from the lower end of the fourth region (325DA).

[0194] A third screw hole (325DAH) into which a screw can be inserted is provided in the lower part of the fourth region (325DA), for example, in the region corresponding to the second extension portion (310B), and a fourth screw hole (325BH) corresponding to the third screw hole (325DAH) can be provided in the second extension portion (310B). When screws are coupled to the third screw hole (325DAH) and the fourth screw hole (325BH), the fourth region (325DA) and the second extension portion (310B) can be fastened.

[0195] By fastening the fourth region (325DA) and the second extension (310B), the fifth region (325DB) can apply pressure to the second circuit board (325B). By the pressure applied by the fifth region (325DB) of the second flow prevention frame (325D), the flow of the second circuit board (325B) can be prevented.

[0196] The upper surface of the sixth region (325DC) may be in contact with the lower surface of the second extension portion (310B), and at least a portion of the second extension portion (310B) may be inserted into the space formed by the fourth region (325DA), the fifth region (325DB), and the sixth region (325DC). Accordingly, the sixth region (325DC) may support the second extension portion (310B) from below.

[0197] Additionally, the extended length of the sixth region (325DC) may be greater than the extended length of the fifth region (325DB). This is because the distance between the fourth region (325DA) and the first extension (310A) is greater than the distance between the fourth region (325DA) and the second circuit board (325B).

[0198] The second flow prevention frame (325D) as described above includes a fourth region (325DA), a fifth region (325DB), and a sixth region (325DC), and the lower portion of the fourth region (325DA) is coupled to the second extension portion (310B) via a screw, and the fourth region (325DA) can be pressed by the front cover (340). Accordingly, the upper portion of the fourth region (325DA) applies pressure to the second optical filter (325C), and the second optical filter (325C) that is pressed by the fourth region (325DA) can apply pressure to the upper portion of the second circuit board (325B). In addition, the fifth region (325DB) can apply pressure to the lower portion of the second circuit board (325B). As the fourth region (325DA) and the fifth region (325DB) apply pressure to the second circuit board (325B), the flow of the second circuit board (325B) can be prevented.

[0199] As described above, the second flow prevention frame (325D) can prevent movement of the light receiving element (325A) and the second circuit board (325B) due to external impact by pressing the second circuit board (325B).

[0200] In a typical touch sensing device, the second circuit board (325B) may move within the guide frame (310) due to external impact or stress. If the second circuit board (325B) moves, the light emitted from the light source (321A) cannot accurately enter the light receiving element (325A) mounted on the second circuit board (325B). However, in the optical touch sensing device (300) according to one embodiment of the present invention, the second circuit board (325B) is fixed by the second movement prevention frame (325D) and movement can be prevented. Therefore, even if an external impact or stress occurs, the light emitted from the light source (321A) can accurately enter the light receiving element (325A).

[0201] As described above, the optical touch sensing unit (320) includes a light emitting unit (321) and a light receiving unit (325), and the light emitting unit (321) and the light receiving unit (325) can be installed in the guide frame (310). Here, the configurations of the light emitting unit (321) and the light receiving unit (325) can be the same except for the light source (321A) and the light receiving element (325A). That is, the light emitting unit (321) and the light receiving unit (325) may include a circuit board (321B, 325B) on which a light source (321A) or a light receiving element (325A) is mounted, an optical filter (321C, 325C) disposed on the upper portion of the circuit board (321B, 325B) and disposed between the light source (321A) and the light receiving element (325A) on the light propagation path, and a movement prevention frame (321D, 325D) that prevents movement of the circuit board (321B, 325B).

[0202] In one embodiment of the present invention, the flow prevention frame (321D, 325D) includes a first flow prevention frame (321D) and a second flow prevention frame (325D), wherein the first flow prevention frame (321D) and the second flow prevention frame (325D) may have the same structure. That is, the flow prevention frame (321D, 325D) may include a first region (321DA) extending parallel to the first frame (311) and the second frame (315), a second region (321DB) extending toward the circuit board (321B, 325B) between both ends of the first region (321DA), and a third region (321DC) extending parallel to the second region (321DB) from the lower end of the first region (321DA).

[0203] Here, the lower part of the first region (321DA) can be fastened to the second extension (310B) using a screw, and at least a portion of the second extension (310B) can be inserted into the space formed by the first region (321DA), the second region (321DB), and the third region (321DC). In addition, the extended length of the third region (321DC) can be greater than the extended length of the second region (321DB).

[0204] A cover glass (330) may be provided on the upper portion of the display module (100). The cover glass (330) can absorb external impact and prevent the display panel of the display module (100) from being damaged.

[0205] The cover glass (330) can provide a touch surface that detects touch coordinates by a user's hand or pen, etc. That is, the cover glass (330) can constitute a main part of the optical touch sensing device (300) together with the optical touch sensing unit (320).

[0206] An adhesive member (AD) may be provided between the cover glass (330) and the guide frame (310). The adhesive member (AD) may be made of a double-sided tape or adhesive.

[0207] A front cover (340) is provided on the side of the cover glass (330), the guide frame (310), and the optical touch detection unit (320), so as to prevent the side of the cover glass (330), the guide frame (310), and the optical touch detection unit (320) from being exposed to the outside. This front cover (340) can fix the cover glass (330), the guide frame (310), and the optical touch detection unit (320) to the display module (100).

[0208] As illustrated in FIG. 25, the front cover (340) may include a first cover area (340A) covering a side surface of the guide frame (310), a second cover area (340B) bent from the upper portion of the first cover area (340A) to cover the upper portions of the first optical filter (321C) and the second optical filter (325C), a flow-preventing rib (340C) protruding parallel to the first cover area (340A) from a portion of the second cover area (340B) to prevent the flow of the first flow-preventing frame (321D) and the second flow-preventing frame (325D), and a hook portion (340D) protruding parallel to the second cover area (340B) from the lower portion of the first cover area (340A) to support the lower portions of the second extension portion (310B), the first flow-preventing frame (321D), and the second flow-preventing frame (325D). That is, the first region (321DA) of the first flow prevention frame (321D) and the fourth region (325DA) of the second flow prevention frame (325D) can be provided in a form inserted between the flow prevention rib (340C) and the hook portion (340D). Therefore, the assembly of the first flow prevention frame (321D) and the second flow prevention frame (325D) and the front cover (340) is easy, and the first flow prevention frame (321D) and the second flow prevention frame (325D) can be fixed to the front cover (340).

[0209] Meanwhile, a cut groove may be provided in a portion of the third area (321DC) of the first flow prevention frame (321D) and the sixth area (325DC) of the second flow prevention frame (325D). A hook portion (340D) of the front cover (340) may be inserted into the cut groove.

[0210] The corner bracket (350) may be installed at the lower portion of the portion where the first frame (311) and the second frame (315) are joined, as illustrated in Fig. 26. The corner bracket (350) may include a deformation prevention portion (350A) that prevents distortion of the guide frame (310), and an extension portion (350B) that extends from the deformation prevention portion (350A) to the lower portion of the display module (100).

[0211] The deformation prevention member (350A) may be provided at the lower portion of the first frame (311) and the second frame (315), and may be fastened to the first frame (311) and the second frame (315) via screws. Accordingly, the corner bracket (350) fastened to the first frame (311) and the second frame (315) can fix the first frame (311) and the second frame (315), thereby preventing the twisting of the guide frame (310).

[0212] The extension portion (350B) can extend to the lower portion of the display module (100) to support the lower portion of the display module (100). Here, at least a portion of the extension portion (350B) can be bent to come into contact with the lower portion of the display module (100). In this way, since the extension portion (350B) of the corner bracket (350) supports the lower portion of the display module (100), movement of the display module (100) can be prevented even when an external impact occurs.

[0213] As described above, the optical touch sensing device (300) according to one embodiment of the present invention may include a guide frame (310), an optical touch sensing unit (320), a cover glass (330), a front cover (340), and a corner bracket (350). In particular, the optical touch sensing unit (320) may include a first movement prevention frame (321D) and a second movement prevention frame (325D), thereby preventing movement of the first circuit board (321B) and the second circuit board (325B). Accordingly, movement of the light source (321A) mounted on the first circuit board (321B) and the light receiving element (325A) mounted on the second circuit board (325B) is prevented, and accordingly, the optical touch sensing unit (320) may maintain high touch sensitivity. Additionally, since a portion of the corner bracket (350) supports the lower portion of the display module (100), the display module (100) can be firmly supported.

[0214] In addition, as illustrated in FIG. 26, the optical touch sensing device (300) according to one embodiment of the present invention may further include a display module support frame (360). The display module support frame (360) may be coupled to the first frame (311) and the second frame (315) through a groove formed in the first area (321DA) of the first flow-preventing frame (321D) and the fourth area (325DA) of the second flow-preventing frame (325D). Here, at least a portion of the display module support frame (360) may be in contact with the lower portion of the display module (100). That is, the display module support frame (360) may support the lower portion of the display module (100). Therefore, the display module (100) may be firmly supported by the corner bracket (350) and the display module support frame (360).

[0215] Hereinafter, an assembly process of a display device (1000) including an optical touch sensing device (300) according to an embodiment of the present invention will be described with reference to FIG. 1 and FIG. 16 to FIG. 26. First, a guide frame (310) is installed along the edge of the display module (100). The guide frame (310) may be installed in such a way that one end of the first frame (311) is coupled to the other end of the second frame (315). For example, as illustrated in FIG. 18, after the first flange (311AC) of the first frame (311) and the second flange (315AA) of the second frame (315) are arranged to correspond, screws may be inserted into the first through-hole (311AD) and the second through-hole (315AB), so that the first flange (311AC) and the second flange (315AA) may be coupled.

[0216] Then, a first circuit board (321B) and a second circuit board (325B) are installed on a pair of first frames (311) and a pair of second frames (315). As illustrated in Fig. 21, the first coupling hole (321BA) and the second coupling hole (325BA) of the first circuit board (321B) and the second circuit board (325B) can be coupled with the first coupling protrusion (311AP) and the second coupling protrusion (315AP) provided on the first frame (311) and the second frame (315). Alternatively, as illustrated in FIG. 22, the first coupling aperture (321BA) and the second coupling aperture (325BA) of the first circuit board (321B) and the second circuit board (325B) may be arranged to correspond to the separate apertures of the first frame (311) and the second frame (315), and screws may be inserted to couple the first frame (311) and the second frame (315) with the first circuit board (321B) and the second circuit board (325B). Accordingly, the first circuit board (321B) and the second circuit board (325B) can be accurately installed at the preset positions of the first frame (311) and the second frame (315).

[0217] Here, the first circuit board (321B) has a light source (321A) mounted thereon and can be installed on one of the pair of first frames (311) and one of the pair of second frames (315). The second circuit board (325B) has a light receiving element (325A) mounted thereon and can be installed on the other of the pair of first frames (311) and one of the pair of second frames (315). That is, the first circuit board (321B) and the second circuit board (325B) can be arranged to face each other.

[0218] After the first circuit board (321B) and the second circuit board (325B) are installed, the first optical filter (321C) and the second optical filter (325C) are installed. The first optical filter (321C) is installed on the upper portions of the first frame (311) and the second frame (315) on which the first circuit board (321B) is installed, and the second optical filter (325C) can be installed on the upper portions of the first frame (311) and the second frame (315) on which the second circuit board (325B) is installed. In addition, a portion of the first optical filter (321C) and the second optical filter (325C) can be attached to the first circuit board (321B) and the second circuit board (325B) through a bonding member such as a double-sided tape or an adhesive.

[0219] After the first optical filter (321C) and the second optical filter (325C) are installed, the first flow prevention frame (321D) and the second flow prevention frame (325D) are installed to prevent the flow of the first circuit board (321B) and the second circuit board (325B). Here, screws may be inserted into the first screw hole (321DAH) of the first flow prevention frame (321D) and the second screw hole (311BH) of the second extension (310B) to fasten the first flow prevention frame (321D) and the second extension (310B). In addition, screws may be inserted into the third screw hole (325DAH) of the second flow prevention frame (325D) and the fourth screw hole (325BH) of the second extension (310B) to fasten the second flow prevention frame (325D) and the second extension (310B).

[0220] As described above, as the first flow-preventing frame (321D) and the second flow-preventing frame (325D) are fastened to the second extension (310B), the second region (321DB) of the first flow-preventing frame (321D) can press the first circuit board (321B), and the fifth region (325DB) of the second flow-preventing frame (325D) can press the second circuit board (325B). Accordingly, the movement of the first circuit board (321B) and the second circuit board (325B) can be prevented.

[0221] After installing the first flow prevention frame (321D) and the second flow prevention frame (325D), an adhesive member (AD) for attaching the cover glass (330) is placed on the upper surface of the guide frame (310). Here, the adhesive member (AD) may be a double-sided tape or an adhesive.

[0222] After placing an adhesive member (AD) on the upper surface of the guide frame (310), a cover glass (330) is installed. The cover glass (330) can be fixed to the upper surface of the guide frame (310) by the adhesive member (AD).

[0223] After installing the cover glass (330), the front cover (340) is installed. The front cover (340) is provided on the side of the cover glass (330), the guide frame (310), and the optical touch detection unit (320), so as to prevent the side of the cover glass (330), the guide frame (310), and the optical touch detection unit (320) from being exposed to the outside. In addition, the front cover (340) can fix the cover glass (330), the guide frame (310), and the optical touch detection unit (320) to the display module (100).

[0224] In particular, a first area (321DA) of a first flow prevention frame (321D) and a fourth area (325DA) of a second flow prevention frame (325D) can be inserted between the flow prevention rib (340C) and the hook portion (340D) of the front cover (340). Accordingly, the flow of the first flow prevention frame (321D) and the second flow prevention frame (325D) can be prevented.

[0225] After installing the front cover (340), a corner bracket (350) is installed at the lower portion of the portion where the first frame (311) and the second frame (315) are joined. The corner bracket (350) is fastened to the first frame (311) and the second frame (315) via screws, and can prevent twisting of the guide frame (310). In addition, a portion of the corner bracket (350) extends to the lower portion of the display module (100) to support the display module (100), thereby preventing movement of the display module (100) due to external impact.

[0226] Although the present invention has been described above with reference to various embodiments, it will be understood by those skilled in the art or having ordinary knowledge in the art that the present invention can be variously modified and changed within a scope that does not depart from the spirit and technical scope of the present invention as set forth in the claims to be described below.

[0227] Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the patent claims.

Claims

1. Cover glass; A guide frame that guides the installation position of the cover glass and supports the lower part of the frame of the cover glass and the side of the cover glass; and An optical touch sensing unit including a light emitting unit that generates light and emits it onto the cover glass, and a light receiving unit that detects the light emitted from the light emitting unit, The above light emitting part A first circuit board extending in a direction perpendicular to the cover glass; A light source mounted on the first circuit board and emitting light; A first optical filter that filters light other than the wavelength used for touch detection and is placed between the light source and the light receiving unit on the light propagation path; and It includes a first flow prevention unit that prevents the flow of the first circuit board, The above guide frame provides a space for installing the first circuit board, The above first flow prevention unit is an optical touch sensing device provided between the first circuit board and the guide frame.

2. In paragraph 1, The above light receiving unit A second circuit board extending in a direction perpendicular to the cover glass; A light-detecting light-receiving element mounted on the second circuit board; A second optical filter that filters light other than the wavelength used for the touch detection and is placed between the light emitting unit and the light receiving element on the light propagation path; and Including a second flow prevention unit that prevents flow of the second circuit board, The above guide frame provides a space for installing the second circuit board, The second flow prevention unit is an optical touch sensing device provided between the second circuit board and the guide frame.

3. In paragraph 2, The above guide frame a pair of first frames extending in the first direction; and A pair of second frames extending in a second direction intersecting the first direction, The light emitting unit and the light receiving unit are provided in frames facing each other among the first frames and the second frames, The above first frames include a first vertical portion corresponding to a side of the cover glass, and a first horizontal portion having a shape that is bent and extended from the first vertical portion, The second frames include a second vertical portion corresponding to a side of the cover glass, and a second horizontal portion having a shape that is bent and extended from the second vertical portion, The above first vertical portion and the above second vertical portion A first extension extending in a direction perpendicular to the cover glass; A second extension portion extended by bending from the first extension portion; and An optical touch sensing device comprising a third extension portion that is bent from the second extension portion and is parallel to the first extension portion.

4. In paragraph 3, The first extension part is provided with a yoke, and a step is provided on the edge of the yoke. An optical touch sensing device in which the first circuit board and the second circuit board are arranged in a stepped area of ​​the recess formed by the step, and are separated from the first extension by the step.

5. In paragraph 4, A groove is provided on at least one upper surface of both ends of the first horizontal portion, At least one of the lower surfaces of the second horizontal section is provided with a catch having a shape corresponding to the groove. An optical touch sensing device in which the above groove and the above catch are combined to prevent twisting of the guide frame.

6. In paragraph 5, A first flange is provided at one end of the first vertical portion, which extends in the first direction and has a first hole into which a screw can be inserted in the second direction. At the other end of the first vertical portion, a second flange is provided that extends in the first direction and has a second through hole into which a screw can be inserted in a direction perpendicular to a plane formed by the first direction and the second direction. At one end of the second vertical portion, a third flange is provided that extends in the second direction and corresponds to the second flange, and a third aperture corresponding to the second aperture is provided in the third flange. An optical touch sensing device in which the other end of the second vertical portion is provided with a screw hole corresponding to the first hole and into which at least a part of a screw inserted into the first hole is inserted.

7. In paragraph 5, A flange is provided at both ends of one of the first vertical portion and the second vertical portion, the flange having a through hole extending in the first direction and into which a screw can be inserted in the second direction, An optical touch sensing device in which a screw hole corresponding to the aperture is provided at each end of the other of the first vertical portion and the second vertical portion, and into which at least a part of a screw inserted into the aperture is inserted.

8. In paragraph 5, A flange is provided at both ends of one of the first vertical portion and the second vertical portion, which extends in the first direction and has a through hole into which a screw can be inserted in a direction perpendicular to a plane formed by the first direction and the second direction. An optical touch sensing device, wherein another flange is provided at both ends of the other of the first vertical portion and the second vertical portion, extending in the second direction and corresponding to the flange, and another aperture is provided in the other flange corresponding to the aperture, into which at least a part of a screw inserted into the aperture is inserted.

9. In paragraph 8, An optical touch sensing device further comprising a substrate fixing member provided on the joint portion of the flange and the other flange and positioned in close contact with the side portions of the first circuit board and the second circuit board to prevent movement of the first circuit board and the second circuit board.

10. Cover glass; A guide frame that guides the installation position of the cover glass and supports the lower part of the frame of the cover glass and the side of the cover glass; and An optical touch sensing unit including a light emitting unit that emits light generated from a light source onto the cover glass, and a light receiving unit that has a light receiving element that detects the light emitted from the light emitting unit. Each of the above light emitting unit and the above light receiving unit A circuit board on which the light source or the light receiving element is mounted and which extends in a direction perpendicular to the cover glass; An optical filter that filters out light other than the wavelength used for touch detection and is placed between the light source and the light receiving element on the path of light; and Includes a flow prevention frame that prevents the flow of the circuit board, The above guide frame provides a space for installing the circuit board, The above-mentioned flow-preventing frame is an optical touch sensing device provided on the outside of the circuit board.

11. In paragraph 10, The above guide frame a pair of first frames extending in the first direction; and A pair of second frames extending in a second direction intersecting the first direction, The light emitting unit and the light receiving unit are respectively provided in the first frames and the second frames facing each other, The above first frames include a first vertical portion corresponding to a side of the cover glass, and a first horizontal portion having a shape that is bent and extended from the first vertical portion, The second frames include a second vertical portion corresponding to a side of the cover glass, and a second horizontal portion having a shape that is bent and extended from the second vertical portion, The above first vertical portion and the above second vertical portion a first extension extending in a direction perpendicular to the cover glass; and An optical touch sensing device comprising a second extension portion that is bent and extended from the first extension portion.

12. In paragraph 11, The above-mentioned anti-flow frame A first region extending parallel to the first frame and the second frame; a second region extending toward the circuit board between both ends of the first region; and An optical touch sensing device comprising a third region extending parallel to the second region from the lower end of the first region.

13. In paragraph 12, At least a portion of the second extension is inserted into the space formed by the first region, the second region, and the third region, The lower part of the above first region is connected to the above second extension, The optical touch sensing device further includes a front cover provided on the side of the cover glass, the guide frame, and the optical touch sensing unit. The above-mentioned anti-flow frame is provided between the circuit board and the front cover, and is an optical touch sensing device that fixes the circuit board.

14. In paragraph 13, The above front cover A first cover area covering a side of the above guide frame; A second cover area that is folded from the upper portion of the first cover area and covers the upper portion of the optical filter; A flow-preventing rib protruding parallel to the first cover area in a part of the second cover area; and An optical touch sensing device comprising a hook portion protruding parallel to the second cover area from the lower end of the first cover area.

15. In paragraph 14, The first region of the above flow-preventing frame is an optical touch sensing device inserted between the above flow-preventing rib and the above hook portion.

16. In paragraph 13, It further includes a corner bracket placed at the bottom of the above guide frame, The above corner brackets are A deformation prevention member provided at the lower part of the combined portion of the first frame and the second frame and fastened to the first frame and the second frame; and An optical touch sensing device comprising an extension portion extending from the deformation preventing portion toward the display module.

17. In paragraph 16, An optical touch sensing device wherein at least a portion of the extension is bent to contact the lower portion of the display module.

18. In paragraph 16, A first flange is provided at both ends of one of the first vertical portion and the second vertical portion, the first flange having a through hole extending in the first direction and into which a screw can be inserted in a direction perpendicular to a plane formed by the first direction and the second direction. An optical touch sensing device, wherein a second flange is provided at both ends of the other of the first vertical portion and the second vertical portion, extending in the second direction and corresponding to the flange, and another aperture is provided in the second flange corresponding to the aperture, into which at least a part of a screw inserted into the aperture is inserted.

19. In paragraph 18, Further comprising a substrate fixing member provided on the portion where the first flange and the second flange are combined, An optical touch sensing device in which the above-mentioned substrate fixing member is positioned in close contact with a side of the above-mentioned circuit board to prevent movement of the above-mentioned circuit board.

20. In paragraph 16, It further includes a display module support bracket that is fastened to the lower portion of the first frame and the second frame and supports the display module by having at least a portion thereof in contact with the lower portion of the display module. The above display module support bracket is an optical touch sensing device that is fastened to the first frame and the second frame through a groove formed in the flow prevention frame.

Images