CN103093700B - Display device and manufacturing method thereof - Google Patents

Abstract

The invention relates to a display device and a manufacturing method thereof, which includes a display panel and a backlight module. The display panel has an opposing upper surface and a lower surface and a first side sandwiched between the upper surface and the lower surface. The backlight module has a light guide plate and a reflector. The light guide plate has opposing top and bottom surfaces and is sandwiched between the top surface. and the second side between the bottom surface. The top surface is adjacent to the lower surface, the reflective member has a central portion and side portions, and the central portion is adjacent to the bottom surface. The side portion is adjacent to the first side surface and the second side surface, and the side portion includes a light shielding plate covering a side edge of the upper surface. Wherein, the reflective member is made of polymer and its reflection coefficient is greater than 90%. Compared with the known technology, the present invention omits the traditional plastic frame, thereby reducing costs and avoiding unnecessary waste.

Description

Display device and manufacturing method thereof

technical field

The present invention relates to a display device and a manufacturing method thereof, and in particular to a display device without a plastic frame and a manufacturing method thereof.

Background technique

Existing display devices usually include two main components such as a display panel and a backlight module. In order to fix and position the display panel, the backlight module and various internal components, a corresponding plastic frame is traditionally designed. The plastic frame is arranged on four sides of the display panel and the backlight module to achieve the above-mentioned purpose of fixing and positioning. However, the current display devices are often reinstalled into corresponding housings, for example, on computer screens, televisions or mobile phones, generally there are housing structures designed to install the display devices. The structural material is mostly hard plastic or metal parts, which already have sufficient strength to support and protect the components of the display device. Under such circumstances, the significance of the existence of the plastic frame of the above-mentioned display device itself becomes unnecessary by comparison, and even causes unnecessary waste of resources. The current market competition of electronic products is fierce. In order to improve the competitiveness, it is the general trend to reduce the manufacturing and material costs as much as possible. From this point of view, the known display devices do not disclose further solutions.

Contents of the invention

In view of this, the object of the present invention is to provide a display device and its manufacturing method, which replaces the traditional plastic frame with the side of the reflector, in order to reduce production costs and avoid waste of resources.

To achieve the above object, the present invention provides a display device, which includes a display panel and a backlight module. The display panel has an opposite upper surface and a lower surface and a first side sandwiched between the upper surface and the lower surface. The backlight module has a light guide plate and a reflector. and the second side between the bottom surface. The top surface is adjacent to the lower surface, the reflector has a central portion and side portions, and the central portion is adjacent to the bottom surface. The side part is adjacent to the first side and the second side, and the side part includes a shading plate, and the shading plate covers the side edge of the upper surface. Wherein, the reflector is made of polymer and its reflection coefficient is greater than 90%.

In an embodiment of the present invention, the side part further includes a first positioning plate, a carrying plate and a second positioning plate. The first positioning plate is connected to the edge of the central portion and adjacent to the second side, the bearing plate is connected to the first positioning plate and supports the side edge of the lower surface, and the second positioning plate is connected to the bearing plate and adjacent to the first side. Wherein, the shading plate is connected to the second positioning plate.

In an embodiment of the present invention, the second side has lugs, and the side portion has positioning openings corresponding to the lugs, and the lugs and the positioning openings are fitted together.

In an embodiment of the present invention, four side edges of the upper surface are defined, and the shading plate covers the four side edges.

In an embodiment of the present invention, the display panel is defined with four sides, one side of the display panel has a driving circuit area, and the driving circuit area is connected with input and output components, and the side has openings corresponding to the input and output components, and the input and output components pass through to speak.

In another embodiment of the present invention, four side edges of the upper surface are defined, the drive circuit area corresponds to one of the four side edges of the upper surface, and the light shield covers the other three of the four side edges of the upper surface. .

In an embodiment of the present invention, the display panel is defined with a plurality of sides and has a plurality of first sides, and the second positioning plates are in plurality and are respectively adjacent to the corresponding first sides, and the second positioning plates extend A fixing plate is provided, and the fixing plate is connected with two adjacent second positioning plates.

In one embodiment of the present invention, the backlight module is defined with a plurality of sides and has a plurality of second sides, the first positioning plates are in plurality and are respectively adjacent to the corresponding second sides, and the first positioning plates extend A fixing plate is provided, and the fixing plate is connected with two adjacent first positioning plates.

To achieve the above object, the present invention provides another display device, which includes a display panel and a backlight module. The display panel has an upper surface and a lower surface opposite to each other and a first side sandwiched between the upper surface and the lower surface. The backlight module has a light guide plate and a reflector. The light guide plate has a top surface and a bottom surface opposite to each other and a second side surface sandwiched between the top surface and the bottom surface. The top surface is adjacent to the lower surface, the reflector has a central portion and a side portion, the central portion is adjacent to the bottom surface, the side portion is adjacent to the first side surface and the second side portion, and the side portion includes a reinforcement plate, the reinforcement plate is adjacent to the first side surface and its thickness is substantially Twice the thickness of the central part. Wherein, the reflector is made of polymer and its reflection coefficient is greater than 90%.

In an embodiment of the present invention, the side portion further includes a first positioning plate and a bearing plate. The first positioning plate is connected to the edge of the central part and adjacent to the second side surface, and the bearing plate is connected to the first positioning plate and supports the side edge of the lower surface. Wherein, the reinforcing plate further includes a second positioning plate and a third positioning plate, the second positioning plate is connected to the bearing plate and adjacent to the first side, the third positioning plate is connected to the second positioning plate and sandwiched between the first side and the second positioning plate between.

In an embodiment of the present invention, the second side has lugs, and the side portion has positioning openings corresponding to the lugs, and the lugs and the positioning openings are fitted together.

In an embodiment of the present invention, an optical part is sandwiched between the display panel and the backlight module, the side of the optical part protrudes from the second lug, the third positioning plate has a positioning groove, and the second lug and the positioning groove fit each other.

In an embodiment of the present invention, the display panel is defined with four sides, one side of the display panel has a driving circuit area, and the driving circuit area is connected with input and output components, and the side has openings corresponding to the input and output components, and the input and output components pass through to speak.

In an embodiment of the present invention, the display panel is defined with a plurality of sides and has a plurality of first sides, and the second positioning plates are in plurality and are respectively adjacent to the corresponding first sides, and the second positioning plates extend A fixing plate is provided, and the fixing plate is connected with two adjacent second positioning plates.

In one embodiment of the present invention, the backlight module is defined with a plurality of sides and has a plurality of second sides, the first positioning plates are in plurality and are respectively adjacent to the corresponding second sides, and the first positioning plates extend A fixing plate is provided, and the fixing plate is connected with two adjacent first positioning plates.

To achieve the above object, the present invention proposes a manufacturing method of a display device, comprising: providing a casing; providing a reflector, which has a central portion and side portions extending from the edge of the central portion; facing a first direction at a first position bending the side of the reflector to form a first part; disposing the reflector in the casing; bending the side of the reflector toward a second direction at a second position to form a second part parallel to the top surface of the light guide plate ; Fold the side portion of the reflector toward the first direction at the third position to form a third portion; stack the light guide plate on the central portion of the reflector, wherein the first portion is adjacent to the side of the light guide plate; and, stack The display panel is on the second part, and the third part is adjacent to the side of the display panel.

In an embodiment of the present invention, the step of stacking the display panel on the second part further includes: bending the side part of the reflector toward the third direction at the fourth position to form an upper surface covering the display panel. The fourth part of the side edge.

In an embodiment of the present invention, the step of stacking the display panel on the second part further includes: at the fourth position, the side of the reversely bent reflector facing the first direction forms a sandwich between the display panel The fourth part between the sides of the and the third part.

In an embodiment of the present invention, the step of bending the side portion of the reflective member toward the first direction at the first position further includes: cutting the side portion of the reflective member so that when forming the first part, simultaneously forming The positioning opening corresponds to the lug on the side of the light guide plate.

The display device and its manufacturing method proposed by the present invention enable the display device to omit the traditional plastic frame. Compared with the known technology, the present invention not only reduces the manufacturing and material costs, but also avoids unnecessary waste of resources, and at the same time It can also make the display device lighter and thinner as a whole.

In order to make the purpose, features and advantages of the present invention easier for those skilled in the art to understand, a preferred embodiment is described below in detail together with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a reflector before bending in a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of a bent reflector of a preferred embodiment of the present invention;

Fig. 3 shows the enlarged and partial perspective schematic diagram of area a in Fig. 2;

FIG. 4 is a schematic cross-sectional view of a display device according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of a display device according to a preferred embodiment of the present invention;

FIG. 6 is a schematic diagram of a backlight module according to another preferred embodiment of the present invention;

FIG. 7 is a schematic diagram of a reflector in another preferred embodiment of the present invention;

FIG. 8 is a flow chart of a manufacturing method of a display device according to a preferred embodiment of the present invention;

FIG. 9 is a schematic diagram of a casing of a preferred embodiment of the present invention.

Among them, reference signs:

10: Display device 100: Reflector

110: central part 120: side part

121, 125: First positioning plate 122: Loading plate

123: Second positioning plate 124, 126: Shading plate

1261: extension part 124a: third positioning plate

127: Positioning port 128: Opening

129: Fixed plate 130: Positioning slot

200: Backlight module 201: Second side

202: top surface 203: bottom surface

210: Light guide plate 211: Lug

220: Light-emitting element 230: Optical parts

231: Second lug 300: Display panel

301: first side 302: upper surface

303: Lower surface 310: Drive circuit area

320: input and output parts 400: housing

401: Storage space 10: Side wall

420: Bottom plate S101: Provide shell and reflector

S103: bending the side part of the reflector to form a first part

S105: setting the reflector in the housing

S107: bending the side part of the reflector to form the second part

S109: bending the side part of the reflector to form a third part

S111: Lay the light guide plate on the center of the reflector

S113: stacking the display panel on the second part

S115: bending the side part of the reflector to form a fourth part

Detailed ways

Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 shows a schematic diagram of a reflective member before bending in a preferred embodiment of the present invention, and FIG. 2 shows a reflective member in a preferred embodiment of the present invention after bending. schematic diagram. The reflector 100 is in a flat state before being bent. As shown in FIG. 1 , the reflector 100 includes a central part 110 and a side part 120 , and the side part 120 has a fixing plate 129 . The side part 120 of the reflector 100 presents a three-dimensional structure after being bent several times. As shown in FIG. plate 123, and visors 124,126. Moreover, after the reflector 100 is bent, the positioning opening 127 and the opening 128 are formed at the same time.

Please refer to FIG. 3 again. FIG. 3 is an enlarged and partial perspective view of area a in FIG. The first positioning plate 125 on the other side, between the adjacent first positioning plates 121 , 125 , can be joined to each other through the fixing plate 129 to enhance its structural stability. As shown in Figure 3, the fixed plate 129 extended from one side of the first positioning plate 121 is first bent inwards, and then glued to the inner surface of the first positioning plate 125, so that the first positioning plate 121 can be fixed. The relative position between and 125. In other embodiments, the second positioning plate can also be provided with a fixing plate, and can be engaged and fixed with each other in the same manner.

Please refer to FIG. 4 and FIG. 5 at the same time. FIG. 4 is a schematic cross-sectional view of a display device according to a preferred embodiment of the present invention, and FIG. 5 is a schematic view of a display device according to a preferred embodiment of the present invention. The display device 10 includes a backlight module 200 and a display panel 300 , and the backlight module 200 includes a reflector 100 , a light guide plate 210 and a light emitting element 220 . The light guide plate 210 has an opposite top surface 202 and a bottom surface 203 and a second side surface 201 sandwiched between the top surface 202 and the bottom surface 203. The second side surface 201 is located at the periphery of the light guide plate 210, so four sides can be defined. The light emitting element 220 Adjacent to one side of the second side 201 , but not limited thereto.

The central portion 110 of the reflector 100 is adjacent to the bottom surface 203 of the light guide plate 210 , and the first positioning plates 121 , 125 of the side portion 120 of the reflector 100 are connected to the edge of the central portion 110 and adjacent to the second side 201 of the light guide plate 210 . The first positioning plates 121, 125 are used to fix the light guide plate 210 and the light emitting element 220. As shown in FIG. In the positioning opening 127 , when the light guide plate 210 is stacked on the central portion 110 , the lug 211 and the positioning opening 127 are fitted together to assist the fixing and positioning of the light guide plate 210 .

The supporting plate 122 of the side portion 120 is connected to the first positioning plate 121 , and the supporting plate 122 is used for supporting the display panel 300 . The display panel 300 has an opposite upper surface 302 and a lower surface 303 and a first side 301 sandwiched between the upper surface 302 and the lower surface 303 . The top surface 202 of the light guide plate 210 is adjacent to the lower surface 303 of the display panel 300 , and the supporting plate 122 supports the side edge of the lower surface 303 . The second positioning plate 123 of the side portion 120 is connected to the supporting plate 122 and adjacent to the first side 301 of the display panel 300 , and the second positioning plate 123 is used for helping the fixing and positioning of the display panel 300 .

The shading plate 124 of the side portion 120 is connected to the second positioning plate 123, and the shading plate 126 is connected to the first positioning plate 125. The shading plates 124, 126 cover the side edges of the upper surface 302 of the display panel 300, which are used for shading to avoid unintended The required light leaks from the periphery of the display panel 300 to the outside and affects the optical quality of the display device 10 . Among them, the reflector 100 is preferably made of polymer and its reflectance is greater than 90%; in other embodiments, the reflector can also be made by coating a layer of film on the surface of a substrate, and the reflectance of this layer of film Greater than 90%.

In this embodiment, the display panel 300 is defined with four sides, one of which has a driving circuit area 310, and the driving circuit area 310 has an Outer Lead Bounding (OLB) area. The driving circuit area 310 is connected with an input and output element 320 , and the side portion 120 has an opening 128 corresponding to the input and output element 320 , and the input and output element 320 passes through the opening 128 . Wherein, the side portion 120 adjacent to the driving circuit area 310 only has the first positioning plate 125 and the light shielding plate 126 , but it is not limited thereto. As shown in FIG. 2 , the first positioning plate 125 is connected to the edge of the central portion 110 , and the light shielding plate 126 is connected to the first positioning plate 125 . In addition, corresponding to the four sides of the display panel 300 , the upper surface 302 of the display panel 300 may also define four side edges, and the light shielding plates 125 and 126 respectively cover the four side edges. In other embodiments, the shading plate can also only cover the other three side edges not corresponding to the driving circuit area, and the shading plate can be omitted on one side edge corresponding to the driving circuit area, because the driving circuit area It has the effect of shading itself.

Please refer to FIG. 6 again. FIG. 6 is a schematic diagram of a backlight module according to another preferred embodiment of the present invention. FIG. 6 takes the display device 10 shown in FIGS. Partial structural design. Specifically, the shading plates 124, 126 originally shown in Fig. 1 to Fig. 5 are replaced with strengthening plates (not labeled in the figure) in another embodiment shown in Fig. 6, and the strengthening plates include a second positioning plate 123 and the third positioning plate 124a. The second positioning plate 123, as shown in FIGS. 1 to 5, is connected to the carrier plate 122 and is adjacent to the first side 301 of the display panel 300. The third positioning plate 124a is connected to the second positioning plate 123 and sandwiched between the first side 301 and the first side 301. between the second positioning plates 123 . The thickness of the reinforcing plate is equivalent to the sum of the thicknesses of the second positioning plate 123 and the third positioning plate 124a, so it is roughly twice the thickness of the central portion 110, whereby the reinforcing plate can be used to increase the stiffness of the reflector 100. sex.

In addition, an optical element 230 may also be sandwiched between the display panel 300 and the backlight module 200 , and the optical element 230 is, for example, a plurality of optical films or a square-shaped light-shielding element. The side of the optical part 230 protrudes from the second lug 231, the third positioning plate 124a has a positioning groove 130 corresponding to the second lug 231, the second lug 231 and the positioning groove 130 are fitted together, which is used to assist the optical Positioning of piece 230.

Please refer to FIG. 7 again. FIG. 7 shows a schematic diagram of a reflector in another preferred embodiment of the present invention. FIG. 7 takes the display device 10 shown in FIGS. Partial structural design. Specifically, an extension part 1261 is added above the opening 128 on the side part 120 , and the extension part 1261 is extended from the light-shielding plate 126 , and the extension part 1261 also has a light-shielding effect.

Please refer to FIG. 8 and FIG. 9 at the same time. FIG. 8 is a flow chart of a manufacturing method of a display device according to a preferred embodiment of the present invention, and FIG. 9 is a schematic diagram of a housing according to a preferred embodiment of the present invention. 8 and 9 take the display device 10 shown in FIGS. 1 to 5 as an example. In step S101 , a casing 400 as shown in FIG. 9 and a reflector 100 before bending as shown in FIG. 1 are provided. The reflector 100 has a central portion 110 and a side portion 120 . Wherein, the casing 400 can be used as a jig in the subsequent manufacturing process. In step S103, the side portion 120 of the reflector 100 is bent toward the first direction at the first position to form a first part, the first direction is vertically upward, and the first part is the first positioning plate 121, 125 . In addition, because the side portion 120 of the reflector 100 has been cut into a predetermined shape, when the side portion 120 forms the first part, the positioning opening 127 is formed at the same time, and the positioning opening 127 corresponds to the second side 201 of the light guide plate 210 lugs 211.

In step S105 , the reflector 100 is disposed in the corresponding casing 400 . As shown in FIG. 9 , the casing 400 is concavely provided with an accommodating space 401 corresponding to the reflector 100 , the accommodating space 401 has a side wall 410 around it and a bottom plate 420 at the bottom, wherein the central part 110 of the reflector 100 is stacked. on the bottom plate 410 , and the side wall 410 corresponds to the side portion 120 . In step S107, the side portion 120 of the reflector 100 is bent toward the second direction at the second position to form a second portion parallel to the top surface 202 of the light guide plate 210, the second direction is horizontally outward, and the The second part is the bearing plate 122 . In step S109 , the side portion 120 of the reflector 100 is bent toward the first direction at the third position to form a third portion, which is the second positioning plate 123 . It should be understood that steps S107 and S109 can be performed at the same time. Specifically, the casing 400 and its side wall 410 can be used as a part of the jig, and the second The part and the third part can be formed at the same time. In step S111 , the light guide plate 210 is stacked on the central portion 110 of the reflector 100 , wherein the first positioning plates 121 , 125 are adjacent to the second side 201 of the light guide plate 210 . In step S113, the display panel 300 is stacked on the second part. At this time, the carrier plate 122 is holding the side edge of the lower surface 303 of the display panel 300, and the second positioning plate 123 is adjacent to the first side 301 of the display panel 300. . In step S115, the side portion 120 of the reflector 100 is bent toward the third direction at the fourth position to form a fourth portion covering the side edge of the upper surface 302 of the display panel 300, the third direction is horizontally inward, The fourth part is the shading plate 124 , 126 .

In other embodiments, before stacking the display panels, the side portion of the reflector can be reversely bent toward the first direction at the fourth position to form a gap sandwiched between the first side surface of the display panel and the second positioning plate. The fourth part, the fourth part is the third positioning plate.

To sum up, the present invention is a display device and its manufacturing method, so that the display device can omit the traditional plastic frame, and also avoid the mold and related production costs for making the plastic frame. Compared with the prior art, the present invention not only reduces manufacturing and material costs, but also avoids unnecessary waste of resources, and at the same time makes the display device lighter and thinner as a whole.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The protection scope of the invention should be determined by the claims.

Claims (16)

1. A display device, comprising: A display panel has an upper surface and a lower surface opposed to each other and a first side sandwiched between the upper surface and the lower surface; and A backlight module has a light guide plate and a reflector, the light guide plate has a top surface and a bottom surface opposite to each other, and a second side surface sandwiched between the top surface and the bottom surface, the top surface is adjacent to the bottom surface , the reflector has a central portion and a side portion, the central portion is adjacent to the bottom surface, the side portion is adjacent to the first side and the second side, and the side portion includes a shading plate, the shading plate covers the upper surface side edge of It is characterized in that the reflector is made of polymer and its reflection coefficient is greater than 90%; The side also includes: a first positioning plate, connected to the edge of the central part and adjacent to the second side; a carrying plate, connected to the first positioning plate and supporting the side edge of the lower surface; and a second positioning plate, connected to the bearing plate and adjacent to the first side; Wherein, the shading plate is connected to the second positioning plate; Wherein the display panel is defined with a plurality of sides and has a plurality of first sides, the second positioning plate is multiple and adjacent to the corresponding first sides respectively, and a fixing plate is extended from the second positioning plate, and the fixing plate engages Two adjacent second positioning plates. 2 . The display device according to claim 1 , wherein the second side has a lug, and the side portion has a positioning opening corresponding to the lug, and the lug and the positioning opening are fitted together. 3 . The display device according to claim 1 , wherein four side edges of the upper surface are defined, and the light-shielding plate covers the four side edges. 4 . 4. The display device according to claim 1, wherein the display panel is defined with four sides, one side of the display panel has a driving circuit area, the driving circuit area is connected to an input and output device, and the side portion has a Corresponding to the opening of the input and output member, the input and output member passes through the opening. 5. The display device according to claim 4, wherein four side edges of the upper surface are defined, the driving circuit area corresponds to one of the four side edges of the upper surface, and the light-shielding plate covers the upper surface The other three of the four lateral edges of the surface. 6. The display device according to claim 1, wherein the backlight module is defined with a plurality of sides and has a plurality of second sides, and the first positioning plate is a plurality of and respectively adjacent to the corresponding second sides, The first positioning plate is extended with a fixing plate, and the fixing plate connects two adjacent first positioning plates. 7. A display device comprising: A display panel has an upper surface and a lower surface opposed to each other and a first side sandwiched between the upper surface and the lower surface; and A backlight module has a light guide plate and a reflector, the light guide plate has a top surface and a bottom surface opposite to each other, and a second side surface sandwiched between the top surface and the bottom surface, the top surface is adjacent to the bottom surface , the reflector has a central portion and a side portion, the central portion is adjacent to the bottom surface, and the side portion is adjacent to the first side surface and the second side surface; It is characterized in that the side portion includes a reinforcing plate adjacent to the first side and having a thickness substantially twice the thickness of the central portion; Wherein, the reflector is made of polymer and its reflection coefficient is greater than 90%; The side also includes: a first positioning plate, connected to the edge of the central portion and adjacent to the second side; and a bearing plate, connected to the first positioning plate and supporting the side edge of the lower surface; Wherein, the reinforcing plate further includes a second positioning plate and a third positioning plate, the second positioning plate is connected to the bearing plate and adjacent to the first side, the third positioning plate is connected to the second positioning plate and clamped on the Between the first side and the second positioning plate. 8 . The display device according to claim 7 , wherein the second side has a lug, and the side portion has a positioning opening corresponding to the lug, and the lug and the positioning opening are engaged with each other. 9 . The display device according to claim 7 , wherein an optical part is sandwiched between the display panel and the backlight module, a second lug protrudes from the side of the optical part, and the third positioning plate has a A positioning groove, the second lug and the positioning groove are mutually fitted. 10. The display device according to claim 7, wherein the display panel is defined with four sides, one side of the display panel has a driving circuit area, and the driving circuit area is connected to an input and output element, and the side portion has a Corresponding to the opening of the input and output member, the input and output member passes through the opening. 11. The display device according to claim 7, wherein the display panel is defined with a plurality of sides and has a plurality of first sides, and the second positioning plate is a plurality of and respectively adjacent to the corresponding first sides, The second positioning plate is extended with a fixing plate, and the fixing plate is connected with two adjacent second positioning plates. 12. The display device according to claim 7 or 11, wherein the backlight module is defined with a plurality of sides and has a plurality of second side surfaces, and the first positioning plate is in plurality and adjacent to the corresponding second sides respectively. On the side, the first positioning plate is extended with a fixing plate, and the fixing plate joins two adjacent first positioning plates. 13. A method for manufacturing a display device, comprising: providing a housing; providing a reflector with a central portion and a side portion extending from an edge of the central portion; bending the side portion of the reflector toward a first direction at a first position to form a first portion; disposing the reflector in the casing; bending the side portion of the reflector toward a second direction at a second position to form a second portion; bending the side portion of the reflector toward the first direction at a third position to form a third portion; stacking a light guide plate on the central portion of the reflector, wherein the first portion is adjacent to the side surface of the light guide plate, and the second portion is parallel to the top surface of the light guide plate; and A display panel is stacked on the second part, wherein the third part is adjacent to the side of the display panel. 14. The method for manufacturing a display device according to claim 13, wherein the step of stacking the display panel on the second part further comprises: The side portion of the reflector is bent toward a third direction at a fourth position to form a fourth portion covering the side edge of the upper surface of the display panel. 15. The method of manufacturing a display device according to claim 13, wherein the step of stacking the display panel on the second part further comprises: The side portion of the reflective member is bent opposite to the first direction at a fourth position to form a fourth portion sandwiched between the side surface of the display panel and the third portion. 16. The method for manufacturing a display device according to claim 13, wherein the step of bending the side portion of the reflector toward the first direction at the first position further comprises: When cutting the side of the reflector to form the first part, a positioning opening is formed at the same time, and the positioning opening corresponds to a lug on the side of the light guide plate.