JP2017161828A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the display defect caused by the influence of a claw provided in a lower frame of a display device.SOLUTION: A display device includes a display panel unit, and a lower frame covering the display panel unit from a back surface side. The lower frame includes a frame part opening on the inner peripheral side, at least one claw part formed protruding from the frame part to the outer peripheral side, and a reinforcement part formed protruding from the frame part in a direction opposite to the direction where the claw part protrudes.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a display device.

  In a notebook computer or display monitor, a display device in which a display panel and a backlight unit that irradiates light on the back of the display panel are sandwiched between frames is fixed to a product case of the notebook computer or display monitor.

  In Patent Document 1, a claw projecting outward is provided on the frame, a claw receiving hole is provided on the side wall of the case, and the display device is fixed to the product case by engaging the claw with the claw receiving hole. Is disclosed.

Japanese Patent Laid-Open No. 11-202787

  In recent years, with the reduction in size and weight of display devices, the lower frame located on the back side of the backlight unit may have a frame-like structure provided with openings. When such a frame-like lower frame is used, the periphery of the nail in the lower frame is easily deformed by a movement such as a nail fixing operation. For example, the lower frame may be lifted to the backlight unit side due to deformation of the periphery of the nail in the lower frame. Thus, if the lower frame and the backlight unit easily interfere with each other, it may cause display defects such as ripples on the display surface of the display panel.

  The present invention has been made in view of the above problems, and one of its purposes is to reduce display defects due to the influence of nails provided in a lower frame in a display device.

  In order to solve the above-described problems, a display device of the present invention includes a display panel unit and a lower frame that covers the display panel unit from the back side, and the lower frame includes a frame portion having an inner peripheral side opened. , Including at least one claw portion formed to protrude from the frame portion to the outer peripheral side, and a reinforcing portion formed to protrude in a direction opposite to the direction in which the claw portion protrudes from the frame portion. It is characterized by.

  In the display device according to the present invention, the reinforcing portion may be positioned on the back side with respect to the frame portion, and a step may be formed between the reinforcing portion and the frame portion.

  In the display device according to the present invention, the frame part includes a pair of first frame parts extending in a first direction and a pair of second frame parts extending in a second direction, It may be formed in at least one of the first frame portion and the second frame portion, and the reinforcing portion may be formed so as to bridge the first frame portion and the second frame portion.

  In the display device according to the present invention, the frame part includes a pair of first frame parts extending in a first direction and a pair of second frame parts extending in a second direction, It is formed in the 2nd frame part, and the reinforcement part may be formed so that each of the pair of 2nd frame parts which counter may be spanned.

  In the display device according to the present invention, the reinforcing portion may be formed so as to bridge the first frame portion and the second frame portion.

  In the display device according to the present invention, the display panel unit may include a display panel and a backlight unit disposed between the display panel and the lower frame.

  According to the present invention, in the display device, it is possible to reduce display defects due to the influence of the nails provided in the lower frame.

It is a disassembled perspective view which shows the outline of the whole structure of the display apparatus concerning this embodiment. It is a top view of the lower frame concerning a comparative example. It is a fragmentary sectional view of the display concerning a comparative example. It is a top view which shows the 1st example of the lower frame which concerns on this embodiment. It is a fragmentary sectional view of the display apparatus concerning this embodiment. It is a top view which shows the 2nd example of the lower frame which concerns on this embodiment. It is a top view which shows the 3rd example of the lower frame which concerns on this embodiment. It is a top view which shows the 4th example of the lower frame which concerns on this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiment of the present invention, a liquid crystal display device is taken as an example, but the display device according to the present invention is not limited to the liquid crystal display device, and may be, for example, an organic EL display device.

  FIG. 1 is an exploded perspective view showing an outline of the overall configuration of the display device 1 according to the present embodiment. The display device 1 includes a display panel unit 1a that includes a display panel 2 that displays an image and a backlight unit 3 that irradiates the display panel 2 with light from the back side. The display device 1 is assembled so that the display panel 2 and the backlight unit 3 are sandwiched between the light shielding tape 4, the lower frame 5, and the mold frame 6. The lower frame 5 is provided with a claw portion 25, and the display device 1 and the product case 500 (see FIG. 3) are fixed through the claw portion 25.

  Here, a display device 100 according to a comparative example for comparison with the display device 1 according to the present embodiment will be described. FIG. 2 is a plan view of the lower frame 105 according to the comparative example as viewed from the display surface side. FIG. 3 is a partial cross-sectional view of a display device 100 according to a comparative example. FIG. 3 shows a state in which the display device 100 according to the comparative example is fixed to the product case 500. Also, the lower frame 105 shown in FIG. 3 shows the AA ′ cross section of FIG. 2.

  As shown in FIG. 2, the lower frame 105 according to the comparative example includes a frame-shaped frame portion 115 and four claw portions 125 as viewed in a plan view. The frame 115 includes a pair of first frame portions 115a extending in the first direction d1 and a pair of second frame portions 115b extending in the second direction d2. An area surrounded by the pair of first frame portions 115a and the pair of second frame portions 115b is opened. The claw portion 125 is formed so as to protrude from a part of the frame portion 115 to the outer peripheral side. The claw portion 125 and the product case 500 are fixed by, for example, screwing. In FIG. 2, the claw portion 125 has a through hole 126 through which a screw 127 for screwing passes.

  As shown in FIG. 3, the display device 100 according to the comparative example includes a display panel unit 101 a, a light shielding tape 104, a lower frame 105, and a mold frame 106. The display panel unit 101a includes a display panel 102 and a backlight unit 103.

  The display panel 102 includes a TFT substrate 121, a counter substrate 122, and a liquid crystal 123 sandwiched between both substrates. The TFT substrate 121 is provided with a driver IC for driving the display panel 102 and terminals connected to an FPC (not shown) or the like. Note that a known structure can be applied to the TFT substrate 121 and the counter substrate 122.

  The backlight unit 103 includes a light guide plate 131, a reflection sheet 132 disposed on the back side of the light guide plate 131, an optical sheet 133 disposed on the display surface side of the light guide plate 131, and light from the side surface of the light guide plate 131. And an illuminating light source 134.

  The light shielding tape 104 is disposed so as to cover the side surface of the display device 100 from the peripheral portion of the display surface of the display panel 102. As a material of the light shielding tape 104, an adhesive tape made of a light shielding material is suitable. Accordingly, the display panel 102 and the backlight unit 103 are fixed between the light shielding tape 104 and the lower frame 105, and light leakage to the outside of the display device 100 is prevented.

  The lower frame 105 is disposed so as to cover the back side of the display panel unit 101a, more specifically, the back side of the backlight unit 103, and supports the backlight unit 103. The lower frame 105 includes a bottom plate portion 105c facing the reflection sheet 132 and a side wall portion 105d extending from the bottom plate portion 105c to the display surface side. The claw portion 125 extends from a part of the side wall portion 105d to the outer peripheral side. Then, the screw 127 is fixed to the product case 500 through the through hole 126 provided in the claw portion 125.

  The mold frame 106 is formed in a frame shape when viewed from the display surface side, and is disposed so as to cover the periphery of the backlight unit 103. Further, the display panel 102 is placed on the display surface side of the mold frame 106.

  Here, in the lower frame 105 having openings as shown in FIGS. 2 and 3, the periphery of the portion of the frame portion 115 where the claw portion 125 is formed is easily deformed. For example, when the angle θ of the claw portion 125 with respect to the side wall portion 105d is formed to be 90 degrees or more, when the lower frame 105 is fixed to the product case 500, the end portion 115e on the inner peripheral side of the frame portion 115 becomes the display surface side. May be lifted by the. As a result, the frame portion 115 and the reflection sheet 132 are likely to interfere with each other, which may cause display defects such as ripples on the display surface of the display panel 2. In particular, since stress tends to concentrate on the periphery of the portion where the claw portion 125 is formed in the end portion 115e on the inner peripheral side of the frame portion 115, a ripple is generated around the area where the claw portion 125 is arranged on the display surface. Is likely to occur.

  Therefore, in this embodiment, the display device 1 including the lower frame 5 having an opening is configured to reduce display defects due to the influence of the claw portion 25. Hereinafter, a specific configuration of the display device 1 according to the present embodiment will be described.

  FIG. 4 is a plan view showing a first example of the lower frame 5 according to the present embodiment. FIG. 4 is a plan view of the lower frame 5 according to the present embodiment as viewed from the display surface side. FIG. 5 is a partial cross-sectional view of the display device 1 according to the present embodiment. FIG. 5 shows a state in which the display device 1 according to the present embodiment is fixed to the product case 500. Moreover, the lower frame 5 shown in FIG. 5 has shown the BB 'cross section of FIG.

  As shown in FIG. 4, the lower frame 5 according to the present embodiment includes a frame-like frame portion 15 in plan view and at least one claw portion formed to protrude from a part of the frame portion 15 to the outer peripheral side. 25 and at least one reinforcing portion 35 formed to protrude to the inner peripheral side of the frame portion 15. The frame portion 15 includes a pair of first frame portions 15a extending in the first direction d1 and a pair of second frame portions 15b extending in the second direction d2. The claw portion 25 is formed on at least one of the first frame portion 15a and the second frame portion 15b. In FIG. 4, four claw portions 25 are formed so as to protrude from a part of the second frame portion 15b of the frame portion 15 to the outer peripheral side (first direction d1). The claw portion 25 may be formed so as to protrude from a part of the first frame portion 15a of the frame portion 15 to the outer peripheral side (second direction d2), or one of the first frame portions 15a of the frame portion 15. It may be formed so as to protrude from both the part and part of the second frame portion 15b to the outer peripheral side (second direction d2). In addition, the claw portion 25 formed on one of the pair of second frame portions 15b and the claw portion 25 formed on the other may be formed at positions symmetrical to the first direction d1 or asymmetric. It may be formed in the position. The claw portion 25 and the product case 500 are fixed by, for example, screwing. In FIG. 4, the claw portion 25 is formed with a through hole 26 through which a screw 27 for screwing passes. The fixing of the claw portion 25 and the product case 500 is not limited to screwing. For example, a fitting hole is formed in the product case 500, and the claw portion 25 is fixed by fitting the claw portion 25 into the fitting hole. May be.

  The lower frame 5 according to the present embodiment is formed with a reinforcing portion 35 that protrudes in a direction opposite to the direction in which the claw portion 25 protrudes from the frame portion 15. The reinforcing portion 35 is formed so as to protrude from the end portion 15 e on the inner peripheral side of the frame portion 15. Further, the reinforcing portion 35 is formed so as to protrude from a root portion 150 that overlaps the claw portion 25 when viewed from the outer peripheral side of the end portion 15e on the inner peripheral side of the frame portion 15 from the outer peripheral side. In other words, the reinforcing portion 35 is a region including at least the portion of the end portion 15e located on the extension line in the direction opposite to the direction in which the claw portion 25 protrudes, of the end portion 15e on the inner peripheral side of the frame portion 15. Is formed. By forming such a reinforcing portion 35, the periphery of the portion of the frame portion 15 where the claw portion 25 is formed is less likely to be bent.

  In the lower frame 5 shown in FIG. 4, four reinforcing portions 35 corresponding to the four claw portions 25 are formed. Each reinforcement part 35 is formed so that it may span over the 1st frame part 15a from the 2nd frame part 15b in which the nail | claw part 25 is formed. Specifically, each reinforcing portion 35 is formed in a triangular shape as viewed in plan so as to be bridged from the second frame portion 15b where the claw portion 25 is formed to the first frame portion 15a. Thus, the reinforcement part 35 is connected to both frame parts of the 1st frame part 15a and the 2nd frame part 15b, and the base periphery of the nail | claw part 25 in the frame part 15 becomes difficult to bend. Further, as shown in FIG. 4, the end portion 35e on the inner peripheral side connecting the first frame portion 15a and the second frame portion 15b in the reinforcing portion 35 is oblique to the direction in which the claw portion 25 protrudes. Stretched in the direction of This makes it difficult for stress to concentrate around the portion of the frame portion 15 where the claw portion 25 is formed.

  As shown in FIG. 5, the display device 1 according to this embodiment includes a display panel unit 1 a, a light shielding tape 4, a lower frame 5, and a mold frame 6. The display panel unit 1 a includes a display panel 2 and a backlight unit 3.

  The display panel 2 includes a TFT substrate 21, a counter substrate 22, and a liquid crystal 23 sandwiched between both substrates. The TFT substrate 21 is provided with a driver IC for driving the display panel 2 and terminals connected to an FPC (not shown) or the like. A well-known configuration can be applied to the TFT substrate 21 and the counter substrate 22.

  The backlight unit 3 receives light from the light guide plate 31, the reflection sheet 32 disposed on the back side of the light guide plate 31, the optical sheet 33 disposed on the display surface side of the light guide plate 31, and the side surface of the light guide plate 31. And an illuminating light source 34.

  The light shielding tape 4 is disposed so as to cover the side surface of the display device 1 from the peripheral edge of the display surface of the display panel 2. As a material of the light shielding tape 4, an adhesive tape made of a light shielding material is suitable. Thereby, the display panel 2 and the backlight unit 3 are fixed between the light shielding tape 4 and the lower frame 5, and light leakage to the outside of the display device 1 is prevented.

  The lower frame 5 is disposed so as to cover the back side of the display panel unit 1a, more specifically, the back side of the backlight unit 3, and supports the backlight unit 3. The lower frame 5 includes a frame portion 15, a claw portion 25, and a reinforcing portion 35. The frame portion 15 includes a bottom plate portion 15c facing the reflection sheet, and a side wall portion 15d extending from the bottom plate portion 15c to the display surface side. The claw portion 25 extends from a part of the side wall portion 15d toward the outer peripheral side. Then, the claw portion 25 and the product case 500 are screwed through the through hole 26 of the claw portion 25. The reinforcement part 35 is extended toward the inner peripheral side from the edge part of the inner peripheral side of the baseplate part 15c. Here, the reinforcement part 35 is located in the back side rather than the baseplate part 15c, in other words, it is located in the position which protruded in the back side rather than the baseplate part 15c. That is, a step st is formed between the bottom plate portion 15 c and the reinforcing portion 35. By forming the step st between the bottom plate portion 15c and the reinforcing portion 35, the portion of the frame portion 15 where the claw portion 25 is formed is reinforced, and stress is less likely to concentrate around the portion. Further, since the reinforcing portion 35 is located on the back side with respect to the bottom plate portion 15c, the interval C1 between the reinforcing portion 35 and the backlight unit 3 is larger than the interval C2 between the bottom plate portion 15c and the backlight unit 3. Can also be increased. For this reason, the reinforcement part 35 protruded to the inner peripheral side of the bottom plate part 15c can be made difficult to interfere with the backlight unit 3, and as a result, the possibility that ripples are generated on the display surface of the display panel 2 can be reduced. . The bottom plate portion 15c and the reinforcing portion 35 may be formed on the same plane without forming a step between the bottom plate portion 15c and the reinforcing portion 35.

  In the present embodiment, the frame portion 15, the claw portion 25, and the reinforcing portion 35 constituting the lower frame 5 are integrated. That is, the frame part 15, the claw part 25, and the reinforcement part 35 are comprised with the same material, and there is no joint. According to such a configuration, the rigidity of the lower frame 5 can be increased, and as a result, stress can be made more difficult to concentrate around the portion of the frame portion 15 where the claw portion 25 is formed. Moreover, when the frame part 15, the nail | claw part 25, and the reinforcement part 35 which comprise the lower frame 5 are comprised integrally, it is advantageous also from a viewpoint of manufacturing efficiency.

  The mold frame 6 is formed in a frame shape when viewed from the display surface side, and is disposed so as to cover the outer periphery of the backlight unit 3. Further, the display panel 2 is placed on the display surface side of the mold frame 6.

  FIG. 6 is a plan view showing a second example of the lower frame 5 according to the present embodiment. The lower frame 5 shown in FIG. 6 is the same as the lower frame 5 shown in FIG. 4 except that the configuration of the reinforcing portion 35 is different. Therefore, the same components as those of the lower frame 5 shown in FIG. 4 are denoted by the same reference numerals, and redundant description thereof is omitted.

  The frame portion 15 of the lower frame 5 shown in FIG. 6 includes a pair of first frame portions 15a extending in the first direction d1 and a pair of second frame portions 15b extending in the second direction d2. Yes. The claw portion 25 is formed on at least one of the first frame portion 15a and the second frame portion 15b. In FIG. 6, the claw portion 25 is formed in the second frame portion 15b. And the reinforcement part 35 is formed so that each of a pair of 2nd frame part which opposes may be bridge | crossed, specifically, the reinforcement part 35 is a pair of 2nd frame in which the nail | claw part 25 is formed. It is formed in a rectangular shape in plan view so as to bridge each of the portions 15b. Thereby, the periphery of the part in which the nail | claw part 25 in the frame part 15 is formed becomes difficult to bend. Further, the reinforcing portion 35 is formed so as to bridge the first frame portion 15a and the second frame portion 15b, so that stress is hardly concentrated around the portion of the frame portion 15 where the claw portion 25 is formed. Become.

  In addition, this invention is not limited to the above-mentioned embodiment. For example, the lower frame 5 may be formed in the shape shown in FIGS.

  FIG. 7 is a plan view showing a third example of the lower frame 5 according to the present embodiment. In the lower frame 5 shown in FIG. 7, four reinforcing portions 35 corresponding to the four claw portions 25 are formed. Each reinforcement part 35 is formed so that the 2nd frame part 15b in which the nail | claw part 25 is formed, and the 1st frame part 15a may be bridged. Specifically, each reinforcing portion 35 is formed in a rectangular shape when viewed from above so as to bridge the second frame portion 15b where the claw portion 25 is formed and the first frame portion 15a. In addition, in FIG. 7, the shape of each reinforcement part 35 is not limited to a rectangular shape. Moreover, each reinforcement part 35 is located in the back side rather than the baseplate part 15c, and forms the level | step difference st between the baseplate part 15c.

  FIG. 8 is a plan view showing a fourth example of the lower frame 5 according to the present embodiment. In the lower frame 5 shown in FIG. 8, one reinforcing portion 35 corresponding to the four claw portions 25 is formed. The outer peripheral end of the reinforcing portion 35 is connected to the entire frame portion 15, and the inner peripheral end 35 e of the reinforcing portion 35 is formed in an elliptical shape when seen in a plan view. In addition, in FIG. 8, the shape of the edge part 15e of the inner peripheral side of the reinforcement part 35 is not limited to an ellipse. Moreover, the reinforcement part 35 is located in the back side rather than the baseplate part 15c, and forms the level | step difference st between the baseplate part 15c.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and those skilled in the art have appropriately changed the above embodiments without departing from the spirit of the present invention. It goes without saying that the form is also included in the technical scope of the present invention. For example, the display panel unit 1a may not include the backlight unit 3 as long as it can display an image.

  1,100 display device, 1a, 101a display panel unit, 2,102 display panel, 3,103 backlight unit, 4,104 shading tape, 5,105 lower frame, 6,106 mold frame, 15,115 frame, 15a, 115a First frame portion, 15b, 115b Second frame portion, 15c, 105c Bottom plate portion, 15d, 105d Side wall portion, 15e, 35e, 115e End portion, 21, 121 TFT substrate, 22, 122 Counter substrate, 23, 123 Liquid crystal, 26, 126 Through hole, 27, 127 Screw, 31, 131 Light guide plate, 32, 132 Reflective sheet, 33, 133 Optical sheet, 34, 134 Light source, 35 Reinforcement part, 25, 125 Claw part, 150 Base part 500 product cases.

Claims (6)

A display panel unit;
A lower frame covering the display panel unit from the back side;
With
The lower frame includes a frame portion having an inner peripheral side opened, at least one claw portion formed to protrude from the frame portion to the outer peripheral side, and a direction opposite to a direction in which the claw portion protrudes from the frame portion. Including a reinforcing portion that protrudes,
A display device characterized by that. The reinforcing part is located on the back side of the frame part, and forms a step between the frame part,
The display device according to claim 1. The frame portion includes a pair of first frame portions extending in a first direction and a pair of second frame portions extending in a second direction,
The claw portion is formed on at least one of the first frame portion and the second frame portion,
The reinforcing part is formed so as to bridge the first frame part and the second frame part.
The display device according to claim 1. The frame portion includes a pair of first frame portions extending in a first direction and a pair of second frame portions extending in a second direction,
The claw portion is formed on the second frame portion,
The reinforcing portion is formed to bridge each of the pair of second frame portions facing each other.
The display device according to claim 1. The reinforcing portion is further formed to bridge the first frame portion and the second frame portion.
The display device according to claim 5. The display panel unit includes a display panel, and a backlight unit disposed between the display panel and the lower frame.
The display device according to claim 1.

Images