JP4243998B2 - Display device - Google Patents

Description

  The present invention, for example, a display panel having three or more panel substrates, such as a display panel capable of switching display between a planar image and a stereoscopic image, or a display panel with a touch panel, and a case for housing the display panel The present invention relates to a display device including

  In recent years, many information terminal devices such as mobile phones have been developed as devices for which portability is desired. In these information terminal devices, a liquid crystal display device is used as a display device. In recent years, it has been desired to reduce the thickness and cost of information terminal devices and to improve durability against external impacts and vibrations, and various devices have been imposed on liquid crystal display devices used therefor.

  For example, in the liquid crystal display device described in Patent Document 1, when a liquid crystal display device in which a drive circuit board is mounted around a liquid crystal display element and a backlight light source is disposed on the back of the liquid crystal display device is stored in the case, the space in the case The whole is filled with cushioning material. By using the cushion material, it is possible to easily prevent the liquid crystal display element from being damaged due to external vibration or impact. Therefore, the configuration for preventing the damage is not complicated, and the cost of the liquid crystal display device is reduced by reducing the number of parts.

  However, in the liquid crystal display device, since the liquid crystal display element, the drive circuit board, and the backlight light source are fixed in the case by curing the cushion material, it is not easy to repair or disassemble the components.

Therefore, for example, in the display device described in Patent Document 2, as shown in FIG. 7, a display module 101 including a display panel, a drive element, and the like can be slidably housed in a case 102. More specifically, a convex or concave guard portion 103 is formed on the side surface of the display module 101. In addition, rail portions 104 that match the shape of the guard portion 103 are formed on the inner sides of both sides of the case 102. The display module 101 is accommodated in the case 102 by sliding the guard portion 103 and the rail portion 104, and then the fixing portion 105 is fitted into the case 102, thereby preventing the display module 101 from falling off the case 102. The With such a configuration, a display device that is robust and easy to assemble and can be easily disassembled during repair is realized.
JP-A-5-80306 (refer to claim 1, paragraph [0016]) JP-A-11-259010 (refer to claim 1)

  However, in the configuration of the display device of Patent Document 2, after the display module 101 is slidably accommodated in the case 102, the fixing unit 105 for preventing the display module 101 from falling off is necessary, and the number of components increases. . Further, since it is necessary to provide the guard portion 103 on the side surface of the display module 101 or the rail portion 104 on the side surface of the case 102, it is difficult to further reduce the external shape of the display device. .

  The present invention has been made in order to solve the above-described problems, and its purpose is that the display panel can be easily put in and out of the case, and further thinning, miniaturization, and cost reduction can be achieved. An object of the present invention is to provide a display device that can be realized.

  In the display device of the present invention, the two panel substrates included in the display panel are arranged to face each other with a predetermined gap. On the other hand, a fitting portion that fits into the gap is formed in the case that accommodates the display panel. That is, the gap is an open space in which the fitting portion can be fitted.

Therefore, if the fitting part of the case is fitted in the gap of the display panel, the display panel can be easily accommodated and fixed in the case. On the other hand, for example, if the display panel is tilted to release the fitting portion into the gap, the display panel can be easily taken out from the opening on the upper surface of the case . As described above, according to the present invention, the display panel can be easily put in and out of the case, and the repair and disassembly thereof can be easily performed.

  In addition, the gap formed between the two panel substrates can be formed at a minute interval of, for example, 1 mm or less, and the fitting portion fitted to the gap can be formed with a thickness of less than that. Therefore, compared with the conventional configuration in which guide members (rails and guides) are provided on the side surface of the display panel and the inside of the case, the display device including at least the display panel and the case can be further reduced in thickness and size. it can.

  Further, the present invention is configured to accommodate and fix the display panel in the case by fitting the fitting portion into the gap, and is not configured to slide and store the display panel in the case using a rail or the like. Therefore, it is not necessary to separately prepare a fixing member for preventing the display panel from falling off the case due to sliding. As a result, the number of parts involved in fixing the display panel to the case can be reduced, and the cost of the apparatus can be reduced. In addition, the display area of the display panel can be increased by eliminating the need for a guide member and a fixing member that have been conventionally used in a sliding manner, and the frame can be further narrowed.

According to the present invention, a gap is formed between the two panel substrates of the display panel , and the case is provided with a fitting portion that fits into the gap, so that the display panel fits the fitting portion into the gap. By being combined, the case is accommodated, while the fitting is released, and the case is taken out from the opening on the upper surface of the case. Therefore, the display panel can be easily put in and out of the case. In addition, the number of parts involved in housing and fixing the display panel in the case can be reduced, and the display device can be thinned, downsized, reduced in cost, and narrowed in frame.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 2 is an exploded perspective view showing a schematic configuration of the display device (liquid crystal display device) of the present embodiment, and FIG. 3 is a plan view of the display device. The display device of this embodiment includes a display module 1 and a case 11. The case 11 is equipped with a backlight light source 14 (see FIG. 1A) described later.

  The display module 1 includes a display panel 2 and its drive circuit 3. Here, FIG. 4 is a cross-sectional view showing a schematic configuration of the display panel 2. In the present embodiment, the display panel 2 is configured by a liquid crystal display panel that can switch and display a planar image (2D) and a stereoscopic image (3D).

  More specifically, the display panel 2 is configured by laminating a display liquid crystal panel 4, a parallax barrier substrate 5, and a switching liquid crystal panel 6 in this order. The display liquid crystal panel 4 and the parallax barrier substrate 5, and the parallax barrier substrate 5 and the switching liquid crystal panel 6 are bonded and fixed to each other via an adhesive 7.

  The display liquid crystal panel 4 is a liquid crystal panel having a first area for displaying a right-eye image and a second area for displaying a left-eye image, and is formed between two panel substrates 4a and 4b made of glass. A liquid crystal layer is sandwiched between them. Polarizing plates 8 and 8 are formed outside the panel substrates 4a and 4b.

  The parallax barrier substrate 5 is for separating the light incident on the first region of the display liquid crystal panel 4 from the light incident on the second region, and one of the panel substrates 5a made of glass. A film for performing such separation is formed on the surface.

  The switching liquid crystal panel 6 controls light separation on the parallax barrier substrate 5 by controlling light incident on the parallax barrier substrate 5 according to the display mode (2D / 3D). A liquid crystal layer is sandwiched between the two panel substrates 6a and 6b. A polarizing plate 9 is formed outside the panel substrate 6b (substrate opposite to the parallax barrier substrate 5).

  With this configuration, when 3D display is performed, the switching liquid crystal panel 6 changes the liquid crystal alignment state of the liquid crystal layer to control the incidence of light from the backlight source 14 to the parallax barrier substrate 5. The parallax barrier substrate 5 separates the light incident on the first region of the display liquid crystal panel 4 from the light incident on the second region. Thereby, only the light of the right-eye image displayed in the first region of the display liquid crystal panel 4 is incident on the right eye of the observer observing the display liquid crystal panel 4. On the other hand, only the left-eye image displayed in the second region of the display liquid crystal panel 4 enters the left eye of the observer. As a result, the observer observes a stereoscopic image.

  On the other hand, when performing 2D display, the switching liquid crystal panel 6 changes the liquid crystal alignment state of the liquid crystal layer to control the light from the backlight source 14 and guide it to the parallax barrier substrate 5. In the parallax barrier substrate 5, the light incident on the first region of the display liquid crystal panel 4 and the light incident on the second region are not separated, and the display liquid crystal panel 4 is visible to the left and right eyes of the observer. The light of the same image (right-eye image and left-eye image) displayed on the screen is respectively incident. As a result, the observer observes the planar image.

  That is, in the display panel 2, it is possible to switch between 3D display and 2D display by changing the arrangement state of the liquid crystal layers of the switching liquid crystal panel 6 according to the display mode.

  In the display panel 2 described above, in the present embodiment, two panel substrates (the panel substrate 4b of the display liquid crystal panel 4 and the panel substrate 6a of the switching liquid crystal panel 6) constituting the display panel 2 are separated by a predetermined gap. Are arranged opposite to each other. More specifically, the panel substrates 4b and 6a are formed with other panel substrates (the panel substrate 5a of the parallax barrier substrate 5) such that a predetermined gap is formed between the panel substrates 4b and 6a. ). A fitting portion 12 (see FIG. 2) of the case 11 described later can be fitted into the gap. The most significant feature of the present invention is that the display panel 2 is configured by bonding the panel substrates 4a, 4b, 5a, 6a, and 6b so that such a gap is formed.

  Here, the thickness of each of the panel substrates 4a, 4b, 5a, 6a, and 6b of the display panel 2 is 0.5 mm, for example, and the thickness of the adhesive 7 is 0.1 mm, for example. The thickness of 9 is, for example, 0.2 mm. Therefore, the gap between the two panel substrates 4b and 6a is 0.5 + 0.2 + 0.1 × 2 = 0.9 mm.

  The panel substrates 4 a, 4 b, 5 a, 6 a, and 6 b are bonded so that the gap is formed only on one side surface of the display panel 2. In the display panel 2, a convex portion 10 that fits into a concave portion 13 described later of the case 11 is formed on the side surface opposite to the gap forming side, as shown in FIG. 2. Accordingly, the display panel 2 can be properly positioned in the case 11 so that the display panel 2 can be properly stored in the case 11 so as not to be upside down.

  Next, the case 11 will be described.

A case 11 shown in FIG. 2 accommodates the display panel 2 and is formed by molding, for example, PC (polycarbonate). Further, white TiO ₂ or the like is kneaded into the case 11 in order to increase the reflection efficiency of light emitted from the backlight source 14 described later.

  On the upper surface of the case 11, an opening through which the display panel 2 can be taken in and out is formed. In addition, at least one fitting portion 12 is formed to protrude inside the case 11 (three fitting portions 12 are juxtaposed in this embodiment), and the display panel 2 is accommodated in the case 11. When this is done, the fitting portion 12 is fitted into the gap of the display panel 2 at at least one location. Further, in the case 11, a concave portion 13 into which the convex portion 10 of the display panel 2 is fitted is formed on the side opposite to the side on which the fitting portion 12 is formed.

  Here, FIG. 5 is a cross-sectional view taken along line A-A ′ in the display device of FIG. 2 in which the display panel 2 (display module 1) is accommodated in the case 11. 1A is a cross-sectional view showing in detail the configuration of part B in FIG. 5, and FIG. 1B is a cross-sectional view showing in detail the configuration of part C in FIG. The case 11 has a backlight light source 14 (illumination device). The backlight light source 14 includes a lens sheet 14a using an LED or the like as a light source, a light guide plate 14b, and a reflection sheet 14c.

  In the above configuration, when the display panel 2 (display module 1) is accommodated in the case 11, the fitting portion 12 of the case 11 is inserted in the gap of the display panel 2 as shown in FIGS. By fitting, the display panel 2 can be accommodated and fixed in the case 11. On the other hand, when the display panel 2 is taken out from the case 11, the display panel 2 can be taken out from the opening on the upper surface of the case 11 by tilting the display panel 2 to release the fitting portion 12 from being fitted into the gap. it can.

  As described above, in the display device of this embodiment, the display panel 2 includes the two panel substrates 4b and 6a arranged to face each other with a predetermined gap therebetween. The fitting part 12 which fits in is formed. As a result, the display panel 2 can be fixed to the case 11 or released by simply inserting and removing the fitting portion 12 of the case 11 into the gap. That is, the display panel 2 can be easily put in and out of the case 11.

  Further, the gap formed between the two panel substrates 4b and 6a is formed at a minute interval of, for example, 0.9 mm, and the fitting portion 12 is further formed with a smaller thickness. Therefore, the display device can be further reduced in thickness and size as compared with the conventional configuration in which guide members (rails and guides) are provided on the side surface of the display panel 2 and the inside of the case 11.

  That is, in the present invention, the housing and fixing of the display panel 2 to the case 11 are not realized by newly installing another member (rail or the like) as in the prior art, but the laminated structure of the panel substrate is devised. Thus, such a separate member can be realized without being newly installed. As a result, the display device can be further reduced in thickness and size.

  Further, the display device of the present embodiment is not a sliding type as in the prior art, but is a fitting type in which the display panel 2 is housed and fixed in the case 11. That is, the guide member for sliding and the fixing member for preventing the display panel 2 from coming off the case 11 due to sliding are unnecessary. As a result, the display area of the display panel 2 can be expanded as much as such a member is unnecessary, and the frame can be further narrowed. Further, since the fixing member is not necessary, the number of parts involved in fixing the display panel 2 to the case 11 can be surely reduced as compared with the sliding type, and the cost of the display device can be reduced.

  In the present embodiment, the two panel substrates 4b and 6a are arranged opposite to each other so that a predetermined gap is formed between the two panel substrates 4b and 6a via the other panel substrate 5a. Therefore, a gap can be reliably formed between the two panel substrates 4b and 6a by the thickness of one panel substrate 5a sandwiched between them. As a result, the effects of the present invention described above can be made more reliable.

  In the present embodiment, since the two panel substrates 4b and 6a are arranged to face each other so that the gap is formed on one side surface of the display panel 2, the case 11 is opened through the opening on the upper surface of the case 11. The display panel 2 can be taken in and out of the case 11 with certainty.

  By the way, the display panel 2 may be fixed to the case 11 via an adhesive member 15 as shown in FIG. As the adhesive member 15, for example, an acrylic colorless and transparent double-sided tape can be used. For example, the adhesive member 15 can be composed of a double-sided tape having a thickness of 0.1 mm, a width of 1.2 mm, and a length of 35 mm.

  In the present embodiment, since the display panel 2 is accommodated and fixed in the case 11 by fitting the fitting portion 12 into the gap, the adhesive member 15 is originally unnecessary. However, by fixing the display panel 2 to the case 11 using the adhesive member 15 as described above, the display panel 2 is more securely fixed to the case 11, and the case of the display panel 2 due to vibration, impact, or the like. Inadvertent omission from 11 can be reliably prevented.

  In particular, as shown in FIG. 2B, if the display panel 2 is fixed to the case 11 via the adhesive member 15 on the opposite side of the display panel 2 from the gap formation side, the display panel 2 The display panel 2 can be fixed to the case 11 in a well-balanced manner by fixing with the fitting portion 12 on one side surface of the display panel and fixing with the adhesive member 15 in the vicinity of the side surface opposite to the side surface. Inadvertent dropping from the second case 11 can be prevented more reliably.

  In the present embodiment, the display panel 2 includes a display liquid crystal panel 4, a parallax barrier substrate 5, and a switching liquid crystal panel 6, and a panel substrate 4 b constituting the display liquid crystal panel 4. The panel substrate 6a constituting the switching liquid crystal panel 6 is disposed opposite to the panel substrate 4b, 6a via the parallax barrier substrate 5a so that the gap is formed. As a result, even when the display panel 2 is configured to be capable of switching between 3D display and 2D display, the display panel 2 can be easily stored and fixed in the case 11 as described above. The effects of the present invention can be obtained.

  By the way, the display panel that can be accommodated in the case 11 is not limited to the display panel 2 capable of switching between the 3D display and the 2D display described above. For example, as shown in FIG. 21 may be sufficient.

  The display panel 21 is a display device with an input function in which a touch panel 23 is attached to a display liquid crystal panel 22 with a double-sided tape 24. The display liquid crystal panel 22 has a liquid crystal layer sandwiched between two panel substrates 22a and 22b, which are glass substrates. The touch panel 23 is formed by bonding two transparent panel substrates 23a and 23b with a predetermined gap therebetween. Electrodes are formed on the surfaces of the panel substrates 23a and 23b, and the panel substrates 23a and 23b are bonded so that the electrode formation surfaces face each other.

  By pressing the outer panel substrate 23a and bringing the electrodes of the panel substrates 23a and 23b into contact with each other, a predetermined signal corresponding to the pressed position can be obtained. Therefore, the display screen of the display liquid crystal panel 22 can be changed based on this signal.

  Here, in the display panel 21, one panel substrate 23a constituting the display liquid crystal panel 22 and one panel substrate 22b constituting the touch panel 23 are other panel substrates (here, panel substrates 23b and 22a). The panel substrates 23a and 22b are arranged so as to face each other with a predetermined gap therebetween.

  Accordingly, if the fitting portion 12 of the case 11 is fitted into the gap of the display panel 21, the display panel 21 can be accommodated in the case 11, and the display panel 21 is tilted to cause the gap of the fitting portion 12. If the fitting to is released, the display panel 21 can be taken out from the opening on the upper surface of the case 11. Therefore, even when the touch panel type display panel 21 is used, the same effect as when the display panel 2 is used can be obtained.

  Note that the method of bonding the panel substrates of the display panel 21 is not limited to the above. For example, the panel substrates of the display panel 21 may be bonded together so that the gap between the fitting portions 12 is formed between the panel substrates 23a and 22a or between the panel substrates 23b and 22b.

  Therefore, the two panel substrates constituting the display panel 21 may be bonded via at least one panel substrate so that a predetermined gap is formed between the two panel substrates. be able to.

  In addition to the above, the present invention can also be applied to a display panel having three or more panel substrates, such as a laminated liquid crystal display element in which liquid crystal panels are stacked (for example, a guest / host type liquid crystal display element). . In addition, the present invention can be applied to display elements other than liquid crystals as long as they have three or more substrates.

  The display device of the present invention described above can also be expressed as follows.

  The display device of the present invention is a display device including at least a display module including a display panel and a drive element, and a case. The display panel includes three or more panel substrates. There is a gap between the panel substrates on one side surface, and the display module and the case are fixed by fitting the convex portion (fitting portion) of the case into one or more places in the gap.

  The display device of the present invention has a configuration in which the display panel and the case are bonded and fixed with an adhesive member on the opposite side where the display panel and the case are fitted to each other.

  The display device according to the present invention has a configuration in which the display panel is a 3D display liquid crystal display panel in which a display liquid crystal panel, a parallax barrier substrate, and a switching liquid crystal panel are stacked.

  The display device of the present invention has a configuration in which the display panel is an input-integrated display panel in which a display panel and a touch panel are stacked.

  The present invention can be used for portable electronic devices such as mobile phones that are small but need to have a large screen (narrow frame).

It is sectional drawing which shows the schematic structure of the display apparatus which concerns on one Embodiment of this invention, Comprising: (a) is sectional drawing which shows the detailed structure of the B section of FIG. 5, (b) is a figure. It is sectional drawing which shows the detailed structure of 5 C part. It is a disassembled perspective view which shows the schematic structure of the said display apparatus. It is a top view of the said display apparatus. It is sectional drawing which shows the structure of the outline of the display panel of the said display apparatus. FIG. 3 is a cross-sectional view taken along line A-A ′ in the display device illustrated in FIG. 2. It is sectional drawing which shows the other structural example of the said display apparatus. It is a perspective view which shows the schematic structure of the conventional display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Display panel 4 Display liquid crystal panel 4a Panel board | substrate 4b Panel board | substrate 5 Parallax barrier board | substrate 5a Panel board | substrate 6 Switching liquid crystal panel 6a Panel board | substrate 6b Panel board | substrate 11 Case 12 Fitting part 21 Display panel 22 Display liquid crystal panel 22a Panel board | substrate 22b Panel substrate 23 Touch panel 23a Panel substrate 23b Panel substrate

Claims (8)

In a display device comprising a display panel and a case for housing the display panel,
The display panel includes two panel substrates disposed to face each other with a predetermined gap therebetween.
The case is formed with a fitting portion that fits into the gap ,
The display panel is accommodated in the case by fitting the fitting portion into the gap, and is taken out from the opening on the upper surface of the case by releasing the fitting. Display device.   The display device according to claim 1, wherein the two panel substrates are arranged to face each other with another panel substrate interposed therebetween.   The display device according to claim 1, wherein the two panel substrates are arranged to face each other so that the gap is formed on one side surface of the display panel.   The display device according to claim 1, wherein the display panel is fixed to the case via an adhesive member.   The display device according to claim 4, wherein the display panel is fixed to the case via the adhesive member on a side opposite to the gap forming side of the display panel. The display panel
A display liquid crystal panel having a first region for displaying a right-eye image and a second region for displaying a left-eye image;
A parallax barrier substrate for separating light incident on the first region and light incident on the second region;
And a switching liquid crystal panel that controls separation of light in the parallax barrier substrate by controlling light incident on the parallax barrier substrate according to a display mode.
6. The panel substrate constituting the display liquid crystal panel and the panel substrate constituting the switching liquid crystal panel are arranged to face each other with the parallax barrier substrate interposed therebetween. A display device according to any one of the above. The display panel includes a display liquid crystal panel and a touch panel each having two opposing panel substrates,
6. One panel substrate constituting the display liquid crystal panel and one panel substrate constituting the touch panel are arranged to face each other with another panel substrate interposed therebetween. A display device according to any one of the above. The display device according to claim 1, wherein light from a backlight light source including a light guide plate is incident on the display panel.

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