JP4388042B2 - Liquid crystal display and its frame - Google Patents

Description

  The present invention relates to a liquid crystal display, and more particularly to a frame on which a liquid crystal display is placed.

  Referring to FIG. 1, the conventional liquid crystal display 100 includes a backlight module 110, a liquid crystal panel 120, an optical film 140, and a frame 130. The backlight module 110 includes a lower member 114, an upper member 112, a light guide plate 116, a light source 118, and a reflective film 119. The reflective film 119 is placed on the lower member 114, and the light guide plate 116 is placed on the reflective film 119. The light source 118 is installed toward the light incident surface (light incident surface) of the light guide plate 116. The upper member 112 is provided on the lower member 114, and the reflective film 119, the light guide plate 116 and the light source 118 are attached to the space formed thereby to form the backlight module 110.

  The liquid crystal panel 120 is placed on the upper member 112, and the frame 130 is disposed and fixed on the upper member 112 of the backlight module 110. The liquid crystal panel 120 is sandwiched and fixed by coupling with the frame 130 and the backlight module 110. The optical film 140 is disposed between the light guide plate 116 and the liquid crystal panel 120.

  Since the light source 118 is surrounded by the upper member 112, the lower member 114, and the frame 130, the frame 130, the liquid crystal panel 120, the upper member 112, and the optical film 140 must be sequentially removed when the light source 118 is replaced. . After that, each component must be assembled in the reverse order of removal. Therefore, the replacement work of the light source 118 is very time consuming. Further, when removing or assembling, other constituent members may be damaged.

  In order to solve the above-described problem, the liquid crystal display 200 described in Taiwan Public Notice No. 594248 (FIG. 2) has a structure similar to that of the liquid crystal display 100. The lower member 114 of the liquid crystal display 200 is further provided with a sliding groove 150 and a light source 118 is installed in the holder 111. When the light source 118 is replaced, the light source 118 can be taken out from the backlight module 110 or inserted into the backlight module 110 along the sliding groove 150. Therefore, the light guide plate 116 can be prevented from being damaged by the light source 118 hitting the light guide plate 116.

  However, since the liquid crystal display 200 includes the frame 130, the upper member 112, and the lower member 114, the structure thereof is complicated and the assembling work is relatively difficult. Further, since the liquid crystal display 200 needs to use the reflective film 119, the cost increases.

  3a and 3b, the frame 300 on which the liquid crystal display module described in the Taiwan Public Notification No. 501313 is mounted includes a holding plate 310 and a plurality of locking pieces 320. The liquid crystal display module 350 can be mounted on the frame 300, and the liquid crystal display module 350 and the printed board 330 can be engaged with each other using the locking piece 320 (FIG. 4).

  Referring to FIG. 5, since the frame 300 engages with the end portion of the printed circuit board 330 using only the claw portion 322 of the locking piece 320, the coupling strength between the claw portion 322 and the printed circuit board 330 is sufficient. In addition, the claw portion 322 may be displaced.

Therefore, it is necessary to provide a frame on which a liquid crystal display for solving the above problems is placed.
Taiwan Notice 594248 Taiwan Notice 501313

  An object of the present invention is to provide a frame on which a backlight module of a liquid crystal display and a liquid crystal panel are mounted, which are made of metal and have the advantages of low cost and excellent heat dissipation. Since the bottom of this frame is plated with chrome and has reflection performance, it is not necessary to use a reflector in the liquid crystal display. In addition, the liquid crystal panel can be fixed by providing a sliding groove. A bending member is installed on the back surface of the frame, and the frame can be fixed to the substrate by using this bending member without using screws or other housings. Light sources can be arranged at both ends of the frame, and a high luminance can be provided by the liquid crystal display.

  A frame according to an embodiment of the present invention includes a bottom wall, a pair of side walls provided to face the upper surface of the bottom wall, and another side wall provided to face the upper surface of the bottom wall. A pair of side walls. The height of the pair of side walls is higher than the height of the other pair of side walls, and one space is formed by the two pairs of side walls and the bottom wall. On top of the two pairs of side walls, there are provided top walls extending toward the opposite side walls.

  Another object of the present invention is to provide a liquid crystal display including the above-described frame. A light guide plate, a light source, an optical film, and a liquid crystal panel are accommodated in the space of the frame. Light sources are provided at both ends of the light guide plate. The optical film is placed on the light guide plate, and the liquid crystal panel is placed on the optical film. The liquid crystal panel is fixed by the top walls of the higher pair of side walls.

  Another object of the present invention is to provide a method for manufacturing the frame. This frame is formed by bending one metal plate. The metal plate includes a bottom plate, two first side plates, two second side plates, two first top plates, and two second top plates. When forming the frame by bending two first side plates and second side plates, the bottom plate becomes the bottom wall, the first side plate becomes the first side wall, and the second side plate becomes the second side wall. become. When the two first top plates and the second top plate are formed by bending, the first top plate becomes the first top wall, and the second top plate becomes the second top wall.

  Other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments, which will be described with reference to the accompanying drawings.

  Referring to FIG. 6, a frame 600 according to an embodiment of the present invention mounts a backlight module of a liquid crystal display and a liquid crystal panel. The frame 600 includes a bottom wall 610, two first side walls 620 disposed to face the upper surface 612 of the bottom wall 610, and two second walls disposed to face the upper surface 612 of the bottom wall 610. Side wall 630. The height of the second side wall 630 is higher than the height of the first side wall 620. 7a and 7b are sectional views taken along lines II and II-II of FIG. 6, respectively. A first top wall 622 extending to the opposite side walls is provided at the upper part of the first side wall 620, and a second top wall 632 extending to the opposite side walls is provided at the upper part of the second side wall 630. A first space 650 is formed by the first top wall 622, the first side wall 620, the second side wall 630, and the bottom wall 610, and the second space is formed by the second top wall 632, the second side wall 630, and the first top wall 622. 634 is formed. In addition, two first sliding grooves 624 are formed by the first top wall 622, the first side wall 620, and the bottom wall 610.

  The material of the frame 600 described above is preferably made of metal, such as iron, and has a relatively excellent heat dissipation property. Further, the bottom wall 610, the first side wall 620, and the first top wall 622 are integrally formed, for example, formed by bending one metal plate. At least one of the second side walls 630 is movably connected to the bottom wall 610. A plurality of protrusions 680 are provided on the upper surface of the first top wall 622 to fix the optical film placed on the frame 600. Fixing pins 670 are provided at both ends of the second side wall 630 adjacent to the first side wall 620. The fixing pins 670 are bent to fix the optical film and the liquid crystal panel placed on the frame 600. Further, a metal plating layer can be formed on the upper surface 612 of the bottom wall 610. For example, a chrome plating layer 314 may be formed to increase the reflectance with respect to light (see FIGS. 7a and 7b). it can. In order to fix the frame 600, a plurality of flat bent members 640 made of metal can be installed on the lower surface of the bottom wall 610. The frame 600 can be fixed to the substrate 1400 by inserting these bending members 640 into the slots of the substrate 1400 and bending the end portions thereof. Therefore, the purpose of fixing the frame 600 can be achieved without using screws or other housings. Further, when an electrostatic removal mechanism is provided in the vicinity of the slot of the substrate 1400, the static electricity contained in the frame 600 is removed by connecting the bending member 640 to the electrostatic removal mechanism. be able to.

  A process of placing the backlight module and the liquid crystal panel on the frame 600 will be described with reference to FIGS. 8 and 9, when the backlight module is attached to the frame 600, the second side wall 630 movably connected to the bottom wall 610 is opened to the outside, and a light source 820 (light source) made of, for example, an LED, The light guide plate 810 is fitted into the first sliding groove 624 and the first space 650, and the light source 820 is disposed next to the light incident surface 816 of the light guide plate 810. The upper surface 612 of the bottom wall 610 is subjected to a surface treatment that reflects light, and has a performance of reflecting light. For this reason, it is not necessary to use a reflector for this liquid crystal display. In addition, two opposing concave portions 814 are formed along the edge of the upper surface 812 of the light guide plate 810. The first top wall 622 is engaged with the concave portion 814, and the light guide plate 810 is attached to the frame 600. (See FIG. 10).

  Referring to FIG. 11, after the light source 820 and the light guide plate 810 are installed on the frame 600, one or a set of optical films 1100 such as a diffusion film, A brightness enhancement film or a film combining the two can be placed. These optical films 1100 are fixed by the protrusions 680 on the upper surface of the first top wall 622.

  Referring to FIG. 12, after the optical film 1100 is placed on the light guide plate 810, the liquid crystal panel 1210 is inserted above the optical film 1100, and the second side wall 630 opened to the outside is raised, The liquid crystal panel 1210 is fixed by the second top wall 632. Next, when the fixing pin 670 is bent toward the optical film 1100 and the liquid crystal panel 1210, the optical film 1100 and the liquid crystal panel 1210 are more stably fixed on the frame 600 (see FIG. 13).

  Next, the assembled liquid crystal panel 1210 and frame 600 are fixed to the substrate 1400 as shown in FIG. The bending member 640 of the frame 600 is inserted into the plurality of slots 1410 of the substrate 1400, and the bending member 640 is bent to connect to the electrostatic removal mechanism 1420 on the back surface of the substrate 1400. As a result, the frame 600 can be fixed to the substrate 1400, and the static electricity contained in the frame 600 can be removed through the electrostatic removal mechanism 1420. FIG. 15 shows a substrate 1400 included in a liquid crystal display 1500 according to the present invention. The light beam from the light source 820 arranged next to the light incident surface 816 of the light guide plate 810 is reflected directly or through the plating layer 614 through the light guide plate 810 and then emitted from the upper surface 812 of the light guide plate 810 to the optical film 1100. Incident. The light is made uniform and enhanced by the optical film 1100 and incident on the liquid crystal panel 1210 to display a predetermined image.

  With reference to FIG. 16, the method of forming the frame 600 according to the present invention will be further described. In this method, the frame 600 can be formed by bending the metal plate 1600. The metal plate 1600 includes a bottom plate 1610, two first longitudinal folding lines 1612, and two first lateral folding lines 1614. Two first side plates 1620 are connected to each other on the outside of the bottom plate 1610 via a first vertical folding line 1612. On the outer side of the first side plate 1620, there is a second vertical folding line 1622 parallel to the first vertical folding line 1612. Further, two second side plates 1630 are connected to each other on the outside of the bottom plate 1610 via a first lateral folding line 1614. A second lateral folding line 1634 parallel to the first lateral folding line 1614 is provided on the outer side of the second side plate 1630. Two first top plates 1640 are connected to the outside of the first side plate 1620 so as to face each other through the second vertical folding line 1622, and two first top plates 1640 are respectively connected to the outside of the second side plate 1630. The two top plates 1650 are connected to each other through the second lateral folding line 1634. When forming the frame 600, the first side plate 1620 is bent along the first vertical folding line 1612, and the second side plate 1630 is bent along the first horizontal folding line 1614. In this case, the bottom plate 1610 forms a bottom wall 610, the first side plate 1620 forms a first side wall 620, and the second side plate 1630 forms a second side wall 630. Further, the first top plate 1640 is bent along the second vertical folding line 1622, and the second top plate 1650 is bent along the second horizontal folding line 1634. In this case, the first top plate 1640 forms the first top wall 622 and the second top plate 1650 forms the second top wall 632.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is sectional drawing which shows the conventional liquid crystal display. It is sectional drawing which shows the other conventional liquid crystal display. It is a three-dimensional view showing a frame on which a conventional liquid crystal module is placed. It is a three-dimensional view showing a connection structure between the frame of FIGS. 3a and 3b and a printed board. It is an enlarged view which shows a part of connection structure of the flame | frame of FIG. 4, and a printed circuit board. It is a three-dimensional view showing a frame according to the present invention. It is sectional drawing in the II line of the flame | frame of FIG. It is sectional drawing in the II-II line of the flame | frame of FIG. It is a figure which shows the assembly process of the liquid crystal display which concerns on this invention, Comprising: It is an assembly drawing explaining assembling a light source and a light-guide plate to a flame | frame. It is a figure which shows the assembly process of the liquid crystal display which concerns on this invention, Comprising: It is an assembly figure explaining assembling a light-guide plate to a flame | frame. It is a figure which shows the assembly process of the liquid crystal display based on this invention, Comprising: It is sectional drawing which assembled the light source and the light-guide plate to the flame | frame. It is a figure which shows the assembly process of the liquid crystal display which concerns on this invention, Comprising: It is sectional drawing which assembled the light source, the light-guide plate, and the optical film to the flame | frame. It is a figure which shows the assembly process of the liquid crystal display which concerns on this invention, Comprising: It is the perspective view which assembled the liquid crystal panel to the flame | frame. It is a figure which shows the assembly process of the liquid crystal display which concerns on this invention, Comprising: After attaching a liquid crystal panel to a predetermined position, it is a perspective view which shows that the fixing pin was bent toward the optical film and the liquid crystal panel. It is sectional drawing which shows the board | substrate concerning this invention. It is a figure which shows the liquid crystal display concerning this invention containing the board | substrate of FIG. It is a top view which shows the metal plate which forms the flame | frame concerning this invention.

Explanation of symbols

100 Liquid crystal display 110 Back light module 111 Holder 112 Upper member 114 Lower member 116 Light guide plate 118 Light source 119 Reflective film 120 Liquid crystal panel 130 Frame 140 Optical film 150 Sliding groove 200 Liquid crystal display 300 Housing 310 Holding plate 320 Locking piece 322 Claw 330 Printed Circuit Board 350 Liquid Crystal Display Module 600 Frame 610 Bottom Wall 612 Top Surface 614 Plating Layer 620 First Side Wall 622 First Top Wall 624 First Sliding Groove 630 Second Side Wall 632 Second Top Wall 634 Second Space 640 Bending Member 650 First space 670 Fixed pin 680 Protrusion 810 Light guide plate 812 Upper surface 814 Recess 816 Light incident surface 820 Light source 1100 Optical film 1210 Liquid crystal panel 1400 Substrate 1410 Slot 1420 Electrostatic removal Departure mechanism 1500 Liquid crystal display 1600 Metal plate 1610 Bottom plate 1612 First longitudinal fold 1616 First lateral fold 1620 First side plate 1622 Second longitudinal fold 1630 Second side plate 1634 Second lateral fold 1640 First top plate 1650 Second top plate

Claims (25)

In the frame where the backlight module of the liquid crystal display and the liquid crystal panel are placed,
A bottom wall defined by two longitudinal sides and two lateral sides;
Two first side walls provided opposite to the two longitudinal sides of the upper surface of the bottom wall;
Two second side walls provided opposite to two lateral sides of the upper surface of the bottom wall, the two second side walls having a height higher than the height of the first side wall;
A first top wall extending from an upper portion of the first side wall toward an opposite side wall, and forming a first space together with the first side wall, the second side wall, and the bottom wall to accommodate the backlight module; Two first top walls,
A second top wall extending from the upper part of the second side wall toward the opposite side wall, and forming a second space together with the second side wall and the first top wall to accommodate the liquid crystal panel. Two top walls,
A frame comprising:   The frame according to claim 1, wherein the frame is made of metal.   The frame according to claim 2, wherein the bottom wall, the first side wall, and the first top wall are formed by integral molding.   The frame according to claim 1, wherein at least one of the second side walls is movably connected to the bottom wall.   The frame according to claim 2, wherein a metal layer is provided on an upper surface of the bottom wall.   6. The frame according to claim 5, wherein the metal layer is a chrome plating layer.   The frame according to claim 1, wherein a plurality of protrusions are provided on an upper surface of the first top wall.   The frame according to claim 1, wherein a plurality of fixing pins are provided at both ends of the second side wall adjacent to the first side wall.   The frame according to claim 4, wherein a plurality of fixing pins are provided at both ends of the second side wall adjacent to the first side wall.   The frame according to claim 1, wherein a plurality of bending members are provided on a lower surface of the bottom wall, and the frame is fixed to the substrate using the bending members. A bottom wall defined by two longitudinal sides and two lateral sides;
Two first side walls provided opposite to two longitudinal sides of the upper surface of the bottom wall;
Two second side walls provided opposite to two lateral sides of the upper surface of the bottom wall, the two second side walls having a height higher than the height of the first side wall;
Two first top walls, each extending from an upper part of the first side wall toward an opposite side wall, forming a first space together with the first side wall, the second side wall, and the bottom wall;
A second top wall extending from the upper part of the second side wall toward the opposite side wall, and two second top walls forming a second space together with the second side wall and the first top wall. Frame,
A backlight module housed in the first space;
A liquid crystal panel housed in the second space;
A liquid crystal display comprising: The backlight module is
A light guide plate housed in the first space;
At least one light source provided in a sliding groove formed by the first top wall, the first side wall and the bottom wall;
An optical film placed on the light guide plate;
The liquid crystal display according to claim 11, further comprising:   The liquid crystal display according to claim 11, wherein the frame is made of metal.   14. The liquid crystal display according to claim 13, wherein the bottom wall, the first side wall, and the first top wall are formed by integral molding.   The liquid crystal display according to claim 11, wherein at least one of the second side walls is movably connected to the bottom wall.   14. The liquid crystal display according to claim 13, wherein an upper surface of the bottom wall is surface-treated to reflect light.   The liquid crystal display according to claim 16, wherein the surface treatment is performed by forming a chromium plating layer.   The liquid crystal display according to claim 12, wherein a plurality of protrusions are provided on an upper surface of the first top wall.   The liquid crystal display according to claim 11, wherein a plurality of fixing pins are provided at both ends of the second side wall adjacent to the first side wall. A substrate provided with a plurality of slots;
A plurality of bending members provided on the lower surface of the bottom wall;
Further comprising
The liquid crystal display according to claim 11, wherein the bent member is inserted into a slot and the frame is fixed to the substrate.   21. The liquid crystal display according to claim 20, wherein the substrate is provided with a plurality of electrostatic removal mechanisms, and the bending member is connected to the electrostatic removal mechanisms.   13. The liquid crystal display according to claim 12, wherein a concave portion is formed along two opposing edges on the upper surface of the light guide plate, and the first top wall is joined on the concave portion. In the metal plate forming the frame on which the backlight module of the liquid crystal display and the liquid crystal panel are placed,
A bottom plate comprising two first longitudinal folds and two first transverse folds;
Two first side plates that extend outside the bottom plate through the first longitudinal folding line and include a second longitudinal folding line parallel to the first longitudinal folding curve;
Two second side plates that extend outside the bottom plate via the first transverse fold, and include a second transverse fold that is parallel to the first transverse fold;
Two first top plates extending outward through the second longitudinal folding line;
Two second top plates extending outwardly through the second transverse folding line,
When forming the frame, the first side plate is bent along the first vertical folding line to form a first side wall, and the second side plate is bent along the first lateral folding line. Bending side walls are formed opposite to each other, and the first top plate is bent along the second vertical folding line to form a bent first top wall, and the second top plate is formed in the second lateral direction. A second top wall is formed by bending along the folding line, and the height of the second side wall is higher than the height of the first side wall, and the first top wall, the first side wall, the second side wall, and the bottom A first space is formed by a wall to house the backlight module, and a second space is formed by the second top wall, the second side wall, and the first top wall to house the liquid crystal panel. And a metal plate.   The metal plate according to claim 23, wherein the bottom wall, the first side wall, and the first top wall are formed by integral molding.   24. The metal plate according to claim 23, wherein at least one of the second side walls is movably connected to the bottom wall.

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