JP3179073U - A display panel assembly or a display device having the display panel assembly. - Google Patents

Abstract

A display panel assembly or a display device having the display panel assembly capable of preventing a drive circuit from being destroyed and malfunctioning due to static electricity even when the front bezel constituting the display panel assembly is made of resin. provide.
A display panel assembly includes a member including a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis. The liquid crystal cell displays an image. A drive circuit is provided, and an end portion of the back chassis 204 is bent to provide a wall portion 204l having a generally U-shaped cross-sectional view interposed between the front bezel and the drive circuit.
[Selection] Figure 8

Description

  The present invention relates to a display panel assembly for displaying an image or a display device having the display panel assembly.

  A display panel assembly is widely used in electronic devices such as a home television receiver and a monitor for a personal computer (PC), and the basic configuration thereof is a liquid crystal cell that transmits or blocks light and the liquid crystal cell. A light source that emits light from the back side of the liquid crystal panel, and an exterior member that mounts the liquid crystal cell and the light source and serves as an exterior of the liquid crystal display panel. And an image can be displayed because a liquid crystal cell permeate | transmits or interrupts | blocks the light irradiated from the said light source.

  Patent Document 1 describes a structure that suppresses deformation such as twisting and bending of a liquid crystal cell with a simple structure. Specifically, it is a front bezel that forms a rectangular frame composed of a first support frame and a second support frame, and includes a second support frame at both ends of the first support frame. The 1st connection convex part and the 2nd connection convex part for connecting are formed. Then, the first through hole and the third through hole of the first connection convex portion, the second through hole and the fourth through hole of the second connection convex portion are overlapped, and are fastened together with the first female screw hole and the second female screw hole, respectively. It has a structure to do.

  Patent Document 2 describes the structure of a liquid crystal display panel that can reduce the number of parts and the number of assembly steps. Specifically, in a liquid crystal display panel including a resin frame, a bezel, and a liquid crystal cell, the frame is substantially semicircular so as to follow the outer peripheral shape of a cylindrical insert nut provided on the side surface of the bezel. A groove having an arc-shaped convex portion for fixing the insert nut to the upper portion, provided on at least one of the side surfaces so that the distance between the formed upper portion and the opposite side surface is smaller than the outer diameter of the insert nut. The structure includes.

JP 2008-197166 A Japanese Patent Laying-Open No. 2005-114838

  Incidentally, the front bezel of Patent Document 1 or the bezel of Patent Document 2 is generally formed of a metal material. This is because the rigidity of the display panel assembly is taken into consideration, but it is also for preventing breakdown and malfunction due to static electricity to the drive circuit provided in the peripheral portion of the liquid crystal cell. However, molding the front bezel with a metal material causes various concerns such as the need for a separate front cabinet that configures the appearance of the display device and the increase in product weight due to molding with the metal material.

  The present invention has been made in view of the above points, and even when the front bezel constituting the display panel assembly is made of resin, it is possible to prevent the drive circuit from being destroyed and malfunctioning due to static electricity with a simple structure. A display panel assembly or a display device having the display panel assembly is provided.

  A display panel assembly according to claim 1 or a display device having the display panel assembly includes a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis. In the display panel assembly, the liquid crystal cell includes a drive circuit for displaying an image, and is bent in an end portion of the back chassis and is interposed between the front bezel and the drive circuit. It features a wall.

  A display panel assembly according to claim 2 or a display device having the display panel assembly includes a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis. In the display panel assembly, the liquid crystal cell includes a driving circuit for displaying an image, and a metal wire material is disposed on the inner surface side of the front bezel including at least a position facing the driving circuit.

  A display panel assembly according to claim 3 or a display device having the display panel assembly includes a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis. In the display panel assembly, the liquid crystal cell includes a drive circuit for displaying an image, and a conductive member is disposed on an inner surface side of the front bezel including at least a position facing the drive circuit.

  A display panel assembly according to claim 4 or a display device having the display panel assembly is the display panel assembly according to claim 2 or claim 3, or a display device having the display panel assembly. The metal wire or the conductive member is arranged in a substantially L shape in a front view including a position facing the drive circuit.

  According to the configuration of the present invention as described above, the influence of static electricity on the display panel assembly in which the resin front bezel is assembled can be prevented by a simple structure. More specifically, static electricity passing through the resin front bezel reaches the drive circuit provided in the liquid crystal cell by a wall portion formed on the back chassis, a generally frame-shaped wire attached to the front bezel, or a conductive member. It is possible to prevent breakdown and malfunction of the drive circuit due to static electricity with a simple structure. As a result, there are various effects such as reduction in the number of parts constituting the display device and weight reduction.

The front side perspective view which shows the display apparatus in the Example of this invention. The disassembled perspective view which shows the structure of the display panel assembly in the Example of this invention. The perspective view which shows the front bezel single-piece | unit in the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side sectional side view showing a mold for molding a front bezel in an embodiment of the present invention. The rear side partial expansion perspective view which shows the front bezel single-piece | unit in the Example of this invention. The perspective view which shows the liquid crystal cell single-piece | unit in the Example of this invention. 1 is a schematic front perspective view showing a liquid crystal cell and a front bezel in an embodiment of the present invention. The front side perspective view which shows the back chassis single-piece | unit in 1st Example of this invention. The front side partial expansion perspective view which shows the back chassis single-piece | unit in 1st Example of this invention. The front side perspective view which shows the front bezel and wire in 2nd Example of this invention. The schematic front side perspective view which shows the state which has arrange | positioned the wire to the front bezel in 2nd Example of this invention. The schematic front side perspective view which shows the state which has arrange | positioned the electrically-conductive member in the front bezel in 3rd Example of this invention.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to FIGS. It should be noted that the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the present invention.

  FIG. 1 is a front perspective view showing a display device in an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a configuration of a display panel assembly in the embodiment of the present invention. In the figure, reference numeral 100 denotes a display device, 200 denotes a display panel assembly that constitutes a display unit of the display device 100, 201 denotes a front bezel having a schematic frame shape that bears the front side of the display panel assembly 200, and 202 denotes an image. A liquid crystal cell to be displayed, 203 is a light source that transmits light from the rear side of the liquid crystal cell 202, 204 is a back chassis, and 205 is a light guide for receiving light emitted from the light source 203 from one end surface to uniformly illuminate the screen. An optical plate, 206 is an optical sheet for diffusing / condensing light guided by the light guide plate 205, 207 is a middle frame positioned in front of the optical sheet 206, and 208 is the back chassis 204 and the light guide plate 205. Each of the reflection sheets located between them is shown.

  In the embodiment of the present invention, the front bezel 201 is formed of a resin material such as polystyrene. FIG. 3 is a perspective view showing a front bezel alone in an embodiment of the present invention, FIG. 4 is a schematic side sectional view showing a molding die for a front bezel in an embodiment of the present invention, and FIG. 5 is an embodiment of the present invention. It is a back side partial expansion perspective view which shows a front bezel simple substance. As shown in the figure, a plurality of material injection locations 201j, 201j,... Are provided in the vicinity of the edge on the rear side of the front bezel 201. The front bezel 201 is formed by hot runner molding in which the material is injected and the molded product is separated in the fixed mold 800b. With hot runner molding, the sprue and runner are prevented from being discharged, and only the front bezel 201, which is a molded product, is discharged, so that extra material costs can be reduced. Further, by providing the material injection locations 201j, 201j,... In the vicinity of the peripheral edge of the front bezel 201, it is possible to prevent interference between the material injection locations 201j and the components constituting the display panel assembly 200 such as the liquid crystal cell 202. . Since the front bezel 201 serves as the front side of the display panel assembly 200 and also serves as the front side exterior casing of the display device 100, a separate front cabinet that constitutes the front side exterior casing is not required. It is possible to provide a display device that can be reduced in size and width. The front bezel in the embodiment of the present invention is a member that surrounds the outer periphery of the display portion, and may be referred to as a frame, a frame, a cabinet, a housing, a case, a frame, or the like. The material of the front bezel 201 is not limited to polystyrene, and a material generally referred to as a resin may be appropriately selected and used. Furthermore, in the embodiment of the present invention, the front bezel 201 is a member integrally formed in a substantially frame shape, but may be divided.

  In the embodiment of the present invention, the back chassis 204 is formed of a metal member such as a steel plate. And since the said back chassis 204 bears the back side of the display panel assembly 200, and also serves as a part of the back side exterior casing of the display apparatus 100, the back cabinet which comprises a back side exterior casing separately is unnecessary. Thus, a display device that can be made thinner can be provided. The material of the back chassis 204 in the present invention is not limited to a steel plate, and a material generally referred to as a metal may be appropriately selected and used.

  FIG. 6 is a perspective view showing a single liquid crystal cell in an embodiment of the present invention, and FIG. 7 is a schematic front perspective view showing a liquid crystal cell and a front bezel in the embodiment of the present invention. As shown in the figure, the liquid crystal cell 202 and the drive circuit board 202b are attached via flexible printed wiring boards 202c and 202c. The liquid crystal cell 202 is provided with film-like electronic components 202a and 202a on which chip components are separately mounted. In the present invention, the flexible printed wiring boards 202c and 202c and the film-like electronic components 202a and 202a are collectively referred to as a drive circuit. The flexible printed wiring boards 202c and 202c and the film-like electronic components 202a and 202a are susceptible to malfunction and damage due to the influence of external static electricity. Therefore, when the resin front bezel 201 is used, external static electricity is prevented. Action is required. Hereinafter, an embodiment of the present invention for preventing the influence of the static electricity on the drive circuit will be described.

  FIG. 8 is a front perspective view showing a single back chassis according to the first embodiment of the present invention, and FIG. 9 is a partially enlarged perspective view of the front side. As shown in the figure, the back chassis 204 is formed with partially U-shaped walls 204l and 204l by bending. The wall portions 204l and 204l are interposed between the front bezel 201 and the film-like electronic parts 202a and 202a of the liquid crystal cell 202 when the display panel assembly 200 is formed, and static electricity from the outside of the display panel assembly 200 is caused by the wall. The structure is transmitted to the back chassis 204 through the parts 204l and 204l. As a result, the wall portions 204l and 204l can prevent the film-like electronic components 202a and 202a from being damaged and malfunctioning due to static electricity. In the first embodiment of the present invention, the structure for preventing the influence of static electricity on the film-like electronic components 202a and 202a has been described. However, the same effect can be obtained by applying the same structure to the flexible printed wiring boards 202c and 202c. Play. Further, in the first embodiment of the present invention, the wall portion 204l is partially formed, but the present invention is not limited to this, and mentions that it can be selected as appropriate without departing from the spirit of the present invention.

  FIG. 10 is a front perspective view showing the front bezel and the wire in the second embodiment of the present invention, and FIG. 11 is a schematic front perspective view showing a state in which the wire is arranged on the front bezel in the second embodiment of the present invention. It is. As shown in the figure, in the second embodiment of the present invention, a substantially frame-shaped wire 210 is attached to the back side of the front bezel 201 as a metal wire. A part of the wire 210 is brought into contact with the back chassis 204, so that static electricity from the outside of the display panel assembly 200 is transmitted to the back chassis 204 via the wire 210. As a result, the flexible printed wiring boards 202c and 202c attached to the liquid crystal cell 202 and the film-like electronic components 202a and 202a can be prevented from being damaged and malfunctioning due to static electricity. In addition, as a fixing means of the wire 210, for example, an attachment portion of the wire 210 is formed on the front bezel 201, or the wire 210 is disposed on the front bezel 201 and a cushion material is adhered thereon. Or it does not specifically limit, such as fixing combining both the above-mentioned means. In the second embodiment of the present invention, the contents using the wire 210 having a substantially frame shape as the metal wire have been described. However, the present invention is not limited to this. Can be selected.

  FIG. 12 is a schematic front perspective view showing a state in which the conductive member is arranged on the front bezel in the embodiment of the present invention. As shown in the figure, in the third embodiment of the present invention, on the back side of the front bezel 201, positions where the flexible printed wiring boards 202c and 202c attached to the liquid crystal cell 202 and the film-like electronic components 202a and 202a face each other. A conductive tape 211 is attached to the substrate. The conductive tape 211 is brought into contact with the back chassis 204, and static electricity from the outside is transmitted to the back chassis 204 via the conductive tape 211. As a result, the flexible printed wiring boards 202c and 202c and the film-like electronic components 202a and 202a can be prevented from being damaged and malfunctioning due to static electricity. In the third embodiment of the present invention, the case where the conductive tape 211 is arranged in an approximate L shape in front view has been described as an example. For example, the conductive tape may be arranged in an approximate frame shape, and the liquid crystal The flexible printed wiring boards 202c and 202c attached to the cell 202 and the film-like electronic components 202a and 202a can be appropriately selected.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the main point of this invention. For example, the wall portion 204l formed on the back chassis 204 and the conductive tape 211 may be used in combination, or the wire 210 and the conductive tape 211 may be used in combination. It is.

DESCRIPTION OF SYMBOLS 100 Display apparatus 200 Display panel assembly 201 Front bezel 201j Material injection | pouring location 202 Liquid crystal cell 202a Film-like electronic component 202b Drive circuit board 202c Flexible printed wiring board 203 Light source (LED board)
204 Back chassis 204l Wall 206 Optical sheet 207 Middle frame 208 Reflective sheet 210 Wire 211 Conductive tape 800 Mold 800a Movable mold 800b Fixed mold

Claims (4)

  A display panel assembly including a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis, wherein the liquid crystal cell includes a drive circuit for displaying an image. A display panel assembly or a display panel assembly, wherein the end portion of the back chassis is bent to provide a substantially U-shaped cross-sectional wall portion interposed between the front bezel and the drive circuit. Display device. A display panel assembly including a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis, wherein the liquid crystal cell includes a drive circuit for displaying an image. A display panel assembly or a display device having the display panel assembly, wherein a metal wire material is disposed on an inner surface side of the front bezel including at least a position where the drive circuit is opposed.   A display panel assembly including a member including at least a liquid crystal cell in a space formed by a resin front bezel and a metal back chassis, wherein the liquid crystal cell includes a drive circuit for displaying an image. A display panel assembly or a display device having the display panel assembly, wherein a conductive member is disposed on an inner surface side of the front bezel including at least a position where the driving circuit is opposed. 4. The display panel assembly or the display panel according to claim 2, wherein the conductive member is disposed in a substantially L shape in a front view including a position facing the drive circuit. 5. A display device having an assembly.

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