JP5389712B2 - Liquid crystal display device and electronic apparatus including the same - Google Patents

Description

  The present invention relates to a display device having a thin display panel. In particular, the present invention relates to a liquid crystal display device having a structure in which a display panel is sandwiched between a protective plate or a touch panel arranged on a display surface and a plate-like member, and a reinforcing structure of an electronic apparatus including the liquid crystal display device.

  With the thinning of portable electronic devices such as mobile phones and PDAs, display devices incorporated in these electronic devices are also thinned. Display devices include passive matrix type liquid crystal display devices using STN and TN liquid crystals, active matrix type liquid crystal display devices in which TN liquid crystals are driven by TFT elements in VA mode or IPS mode, organic EL and plasma displays, etc. . Among them, a liquid crystal display device using a liquid crystal panel is known as a typical thin display panel.

  The liquid crystal panel has a structure in which two glass substrates on which color filters and TFTs are formed are bonded with a sealing agent provided on the outer periphery of the glass substrate, and liquid crystal is sealed in the gap. The liquid crystal is driven by applying a drive signal to the electrodes provided on the surface of the glass substrate. The drive signal is supplied by a driver IC mounted face down on the glass substrate with an anisotropic conductive film. In the liquid crystal panel, liquid crystal molecules are controlled by an ON signal and an OFF signal of a drive signal, and light absorption and transmission are controlled by light absorption type polarizing plates arranged on the front and back sides.

  There are two types of liquid crystal panel display methods: a reflection type in which external light is used for display and a transmission type in which a light source is arranged on the back side for display. In the transmissive liquid crystal panel, a backlight is disposed on the back surface.

  Conventionally, as a method for fixing a liquid crystal panel, a method of fixing a liquid crystal panel to a back member by providing a double-sided tape having a thickness of about 0.02 to 0.1 mm on the outer periphery of a display unit of the liquid crystal panel is known.

  Further, as a fixing method for backlighting the back member and improving the impact resistance, a method of closely contacting the light emitting surface with the back surface of the liquid crystal panel using an elastic body provided with light scattering particles as a buffer member is known. (For example, refer to Patent Document 1).

  In addition, the light guide plate of the backlight is provided with a recess for incorporating a diffusion plate or a lens sheet, a light shielding double-sided tape is provided on the outer periphery of the light guide plate, and a film is attached to form a backlight. It is known that the pressure strength is improved by the close contact structure (see, for example, Patent Document 2). In addition, there is a method in which the back surface of the liquid crystal panel is directly bonded to the light emitting surface of the light guide plate directly with an optical adhesive.

  In recent years, in addition to the liquid crystal panel and the backlight, a display device including a transparent body such as a protective plate or a transparent touch panel disposed on a display surface has been widely used. The protective plate is used to prevent the glass substrate from cracking, and is made of acrylic such as PMMA or tempered glass. As the tempered glass, a chemically tempered glass is often used when the glass thickness is 0.5 to 10 mm. In particular, when the glass thickness is thick, air-cooled tempered glass is employed. The touch panel includes an analog resistance film method, a digital resistance film method, a capacitance method, an ultrasonic method, and an electromagnetic induction method. In the case of the electromagnetic induction method, a scratch-preventing glass substrate may be bonded to the display surface of the display panel. Even in the electrostatic capacity method, tempered glass may be bonded to the display surface.

  Thus, in the liquid crystal display device having a transparent body, the transparent body and the liquid crystal panel are adhesively fixed with a frame-like double-sided adhesive tape provided on the outer periphery of the display area, or a transparent adhesive or The entire surface is pasted by providing a transparent adhesive sheet.

  In addition, a transparent body such as a protective plate or a touch panel is adhered to the display surface of the liquid crystal panel, and a flow stop member is provided between the liquid crystal panel and the light guide plate, and the transparent body and the light guide plate overlap each other outside the display panel. A method of bonding and fixing is known (for example, see Patent Document 3). According to this method, the liquid crystal panel and the backlight can be fixed without being peeled off and the luminance is not lowered, and the impact resistance of the display device can be improved.

  In addition, in the structure in which a display device having a transparent body on the display surface side is housed in an electronic device, a structure in which an outer case having an opening in the display portion is used to hold the transparent body from the upper outer periphery, a step is provided in the transparent body. There is a structure in which the stepped portion lowered by one step is pressed by an exterior case, and a transparent body has a fixing outer peripheral portion larger than the display panel, and a structure in which an adhesive sheet is attached to the back surface of the outer peripheral portion and adhesively fixed to an electronic device.

Japanese Patent No. 2999369 (page 4, FIG. 1) JP 2004-347957 A (5th page, FIG. 2) JP 2009-122655 A

  As mobile devices are made thinner, the thickness of the glass substrate constituting the display panel is reduced to about 0.1 mm, and the thickness of the light guide plate of the backlight is reduced to about 0.25 mm. The cracks began to occur frequently. In addition, when the thickness of the display panel is about 0.2 mm, it is difficult to supply the adhesive when the method of Patent Document 3 is used. That is, when a transparent body is bonded to the entire display surface of the liquid crystal panel, and the transparent body and the light guide plate are bonded and fixed at the overlapping portion on the outside of the display panel, the diameter of the nozzle for applying the adhesive is as large as about 0.5 mm. Therefore, the subject that it did not enter between a transparent body and a light-guide plate arose.

  In addition, in an electronic device using a display device, when the display device having a structure in which a transparent body is attached to the display panel is pressed from the outer peripheral upper surface by the outer case, the thickness is increased by the thickness of the outer case. . Even in a structure in which a step is provided on the transparent body, it is necessary to increase the thickness of the transparent body in order to form the step. In the structure in which the transparent body is enlarged and the pressure-sensitive adhesive sheet is provided on the back surface, there is a problem that the frame becomes large because “adhesive fixing margin” having a certain width or more is required.

  In order to solve the above-described problems, in the liquid crystal display device of the present invention, a transparent body such as a touch panel having a smaller outer periphery than the liquid crystal panel or a protective plate is adhered to the entire display surface of the liquid crystal panel. And the optical sheet arrange | positioned on the light guide plate or light guide plate of an illuminating device is fixed to the back surface of a liquid crystal panel with an adhesive material. A plate-like optical member such as a light guide plate and an optical sheet, and a liquid crystal panel are housed in a frame, and the outer periphery excluding terminal portions of the liquid crystal panel is surrounded by a side wall of the frame. The height of the side wall of the frame is set lower than the upper surface of the transparent body. Further, an adhesive is provided to the gap between the side wall of the frame body and the liquid crystal panel and the transparent body to almost the same height as the side wall, and the transparent body, the liquid crystal panel, and the lighting device are integrally bonded and fixed.

The pressure-sensitive adhesive material is provided on the outer periphery of the light guide plate or the optical sheet, and has a function of preventing the adhesive from entering the gap between the liquid crystal panel and the optical sheet.
Furthermore, a metal frame that covers the outer periphery of the liquid crystal panel may be provided.

  The transparent body may be extended so as to cover the terminal portion of the liquid crystal panel, and the extended end may be fixed to the frame. Further, a flange may be formed on the frame so as to be adjacent to the end of the extended transparent body.

  In the electronic device of the present invention, a transparent body having a smaller outer periphery than the liquid crystal panel is adhered to the entire display surface of the liquid crystal panel. And the plate-shaped optical member of an illuminating device is fixed to the back surface of a liquid crystal panel with an adhesive material. A plate-like optical member such as a light guide plate and an optical sheet, and a liquid crystal panel are housed in a frame, and the outer periphery excluding terminal portions of the liquid crystal panel is surrounded by a side wall of the frame. The height of the side wall of the frame is set lower than the upper surface of the transparent body. Further, an adhesive is provided to the gap between the side wall of the frame body and the liquid crystal panel and the transparent body to almost the same height as the side wall, and the transparent body, the liquid crystal panel, and the lighting device are integrally bonded and fixed. Then, the side wall is pressed and fixed by the exterior case.

  ADVANTAGE OF THE INVENTION According to this invention, a transparent body, a liquid crystal panel, and an illuminating device can be integrated using an adhesive agent without being influenced by the thickness of a liquid crystal panel. Therefore, it is possible to reduce the thickness of the display device, and it is possible to improve the impact resistance in the peeling direction and the pushing direction of the liquid crystal panel. Further, since the transparent body bonded to the liquid crystal panel can be pressed by the outer case even if there is no step or adhesive fixing margin, the outer periphery and thickness of the transparent body can be reduced, and the electronic device can be made thinner.

It is a top view which shows typically the structure of the display apparatus of this invention. It is sectional drawing which shows typically the structure of the display apparatus and exterior case of this invention. It is a top view which shows typically the backlight used by this invention. It is a top view which shows typically the structure of the display apparatus of this invention. It is sectional drawing which shows typically the structure of the display apparatus and exterior case of this invention. It is a top view which shows typically the structure of the display apparatus of this invention. It is sectional drawing which shows typically the structure of the display apparatus and exterior case of this invention. It is a top view which shows typically the backlight used by this invention.

  In the display device of the present invention, a transparent body smaller than the outer periphery of the liquid crystal panel is bonded to the display surface of the liquid crystal panel, and the liquid crystal panel is fixed by a plate-like optical member and an adhesive material of the lighting device installed on the back surface. Is done. The liquid crystal panel and the optical member are housed in a frame, and the outer periphery excluding the terminal portion of the liquid crystal panel is surrounded by the side wall of the frame. An adhesive is applied to the gap between the side wall of the frame, the liquid crystal panel, and the transparent body. The upper surface of the adhesive is substantially the same height as the upper surface of the side wall and is lower than the upper surface of the transparent body.

  As described above, by supplying the adhesive to the gap between the transparent body and the side wall, the transparent body and the lighting device can be bonded and fixed including the side surface of the display panel, and the strength reduction due to the thinning of the display panel is prevented. be able to. In addition, by arranging the transparent body to be smaller than the outer periphery of the liquid crystal panel and covering the display area, and providing a gap between the transparent body and the side wall of the frame body, the nozzle for applying the adhesive regardless of the thickness of the liquid crystal panel The diameter can be increased.

  The transparent body provided on the display surface side may be a protective plate formed of a touch panel, a touch switch, acrylic such as PMMA, tempered glass, or the like.

  The plate-shaped optical member may be an optical sheet such as a light guide of a lighting device or a diffusion film or a prism sheet laminated on the light guide.

Further, the adhesive material is provided around these optical members and has a function of preventing flow of the adhesive from entering the gap between the liquid crystal panel and the optical member.
Further, the transparent body and the liquid crystal panel may be bonded together with a photo-curing transparent adhesive.

  A room-temperature curable adhesive may be used for the adhesive applied between the side wall of the frame, the liquid crystal panel, and the transparent body. The adhesive may be applied to any or all of the three sides other than the 6 o'clock direction of the display device.

  The transparent body may be extended so as to cover the terminal portion of the liquid crystal panel, and the extended end may be fixed to the frame. Further, a flange may be formed on the frame so as to be adjacent to the end of the extended transparent body.

  The electronic device of the present invention further includes an exterior case in addition to the configuration of the display device described above. The side wall of the frame is fixed by the exterior case, and the display device is accommodated in the exterior case. In the electronic device of the present invention, the height of the side wall surrounding the outer periphery of the liquid crystal panel and the height of the adhesive application surface are lower than those of the transparent body. Therefore, when the display device is pressed by the exterior case, a step corresponding to the case thickness may be provided on the side wall and the transparent body, and the display device may be fixed without increasing the thickness.

  With such a configuration, an impact from the rear surface of the display panel when dropped can be received by the side wall that surrounds the outer periphery of the exterior case, the adhesive, and the liquid crystal panel, and the impact resistance from the rear surface can be improved. In addition, the electronic device can be thinned because the transparent body can be pressed with an exterior case even if there is no step or adhesive fixing margin.

  Since the present invention intends to improve the strength as a display device by integrating the transparent member provided on the display surface when individual members constituting the display device become thin, the display panel As for the thickness of the substrate constituting the film, 0.1 to 0.2 mm, the plate-like thickness of the light guide plate or the like is 0.2 to 0.6 mm, and particularly excellent effects are obtained with a structure of about 0.2 to 0.3 mm. It is done. Examples will be described in detail below.

  The configuration of the display device of this embodiment will be described with reference to the drawings. FIG. 2 is a diagram schematically illustrating a cross-sectional configuration of the display device according to the present embodiment. As shown in FIG. 2, liquid crystal (not shown) is sealed in the gap between the counter substrate 1 and the substrate 2. For the counter substrate 1 and the substrate 2 of this embodiment, glass having a thickness of 0.1 to 0.15 mm is used. A holding sealing agent (not shown) is provided around the liquid crystal and holds a gap between the substrates. As the sealant, a UV curable adhesive having a width of about 1 mm may be used. In this embodiment, the counter substrate 1 is formed with a color filter and a transparent electrode, and the substrate 2 is formed with terminals for mounting the TFT array element and the driver IC.

  On the liquid crystal panel, a light-absorbing polarizing plate 3 is attached to the display surface side, and a polarizing element 4 in which a light-absorbing polarizing plate and a light-reflecting polarizing plate are laminated on the back side with an adhesive is attached with an adhesive film. You may laminate | stack a phase difference correction film etc. on the light absorption type polarizing plate 3 of a display surface with an adhesive or an adhesive agent. The polarizing element 4 may be only a light-absorbing polarizing plate, or other optical elements may be further laminated with an adhesive or an adhesive.

  A driver IC 5 for driving the liquid crystal is mounted on the terminal portion of the substrate 2 with an anisotropic conductive film. A first film substrate 6 for supplying a signal to the driver IC 5 is connected to a terminal portion of the substrate 2 by an anisotropic conductive film. A COF in which a driver IC is mounted on a film substrate may be used. A moisture-proof coat (not shown) for improving moisture resistance is applied around the driver IC 5 mounted on the substrate 2 and the first film substrate 6. A molding material (not shown) is provided at a site where the driver IC 5 is mounted. Further, a spacer 7 having the same thickness as the polarizing element 4 on the back surface of the liquid crystal panel is continuously attached to the back surface of the mounting portion so as not to leave a gap with the polarizing element 4.

  On the display surface side, the protective plate 8 is adhered to the liquid crystal panel by a transparent optical adhesive 9. In this embodiment, tempered glass (thickness: about 1.0 mm) obtained by chemically strengthening soda lime glass is used as the protective plate 8. FIG. 1 is a top view of the display device of this embodiment. As shown in FIG. 1, the protective plate 8 has an outer periphery smaller than the counter substrate 1 of the liquid crystal panel and about 0.5 mm larger than the outer dimension of the display area (Active Area) of the liquid crystal panel. Further, an anti-fingerprint coat or an anti-reflection film may be provided on the surface of the tempered glass forming the protective plate 8, or a glass scattering prevention film or the like may be attached. Further, the protective plate 8 may be adhered to the entire surface of the liquid crystal panel using an optical adhesive sheet.

  The backlight of the display device of this embodiment includes an LED 10 that is a light source and a light guide plate 12 that emits light from the LED 10 from the upper surface. The LED 10 is mounted on the second film substrate 11. The LED 10 is desirably arranged on an extension of a terminal of a liquid crystal panel on which the driver IC 5 is mounted. The second film substrate 11 may be arranged so that the light emitting part of the LED 10 is as close as possible to the side surface (light incident surface) of the light guide plate 12. In this embodiment, polycarbonate having a thickness of 280 μm is used for the light guide plate 12. An optical sheet is disposed on the light guide plate 12. (Here, a sheet having an optical function such as a diffusion film or a lens sheet is generically referred to as an optical sheet.) In this embodiment, the optical film is a diffusion film 13 having a thickness of 38 μm and a thickness of 64 μm thereon. A lens sheet 14 is disposed. In order to obtain luminance, another lens sheet may be added. Further, in order to eliminate moire fringes generated when two lens sheets are laminated, a diffusion sheet may be further laminated. On the back surface of the light guide plate 12, a reflective sheet 15 on which silver is deposited is attached to the light guide plate 12 with a double-sided tape (not shown) provided outside the parting.

  The LED 10, the second film substrate 11, the light guide plate 12, and the optical sheet are accommodated in the frame body 16. The light guide plate 12 and the optical sheet are fixed by the frame body 16. (In this embodiment, the light guide plate or the optical sheet disposed thereon is generically referred to as a plate-like optical member.) The frame 16 is formed of white polycarbonate and is a light reflector that improves the light emission efficiency of the backlight. Also works. FIG. 3 is a top view illustrating the configuration of the backlight used in this embodiment. (For convenience of explanation, the LED 10 and the second film substrate 11 are not shown.) As shown in FIG. 3, the side wall of the frame 16 is liquid crystal except for the periphery of the terminal portion where the external connection wiring is formed. Surrounds the outer periphery of the panel. As shown in FIG. 2, the side wall is provided to a position about 0.5 mm lower than the upper surface of the protective plate 8, and a gap of about 1 mm is provided between the side wall and the side surface of the protective plate 8.

  Next, a method for fixing the backlight and the liquid crystal panel will be described. As shown in FIG. 2, an adhesive 17 is provided between the lens sheet 14 on the light guide plate 12 of the backlight and the polarizing element 4 of the liquid crystal panel. The adhesive material 17 is provided so as to cover a gap between the side end portion of the frame body 16 and the side end portion of the laminated optical sheet. In this embodiment, the height of the adhesive material 17 is about 100 μm.

As shown in FIG. 3, the adhesive material 17 is provided in a square shape so as to surround the lens sheet 14. The adhesive material 17 is provided so that the inner diameter of the square shape does not cover the display area of the liquid crystal panel. The liquid crystal panel is fixed to the plate-like optical member of the backlight with the adhesive material 17.
In this way, the protective plate 8 bonded to the entire surface of the liquid crystal panel, the liquid crystal panel, and the backlight are fixed. In this embodiment, the adhesive material 17 is provided on the optical sheet on the light guide plate 12. However, the adhesive material 17 may be provided directly on the light guide plate 12 without arranging the optical sheet.

  Further, a room temperature curable adhesive 18 is applied along the inside of the side wall of the frame 16 and cured. In this embodiment, coating is performed using a nozzle having a diameter of about 0.5 mm. Examples of the material of the adhesive 18 include acrylic modified silicone resin. Further, an adhesive having a hardness after curing of Shore A hardness of 50 to 70 is preferable. As shown in FIG. 1, the adhesive 18 is applied to three sides except for the 6 o'clock side of the liquid crystal panel, that is, the side where the terminal portion on which the driver IC 5 and the first film substrate 6 are mounted is provided. Provided. At this time, the adhesive material 17 prevents the adhesive 18 from penetrating inside the backlight. Further, as shown in FIG. 2, the height of the application surface of the adhesive 18 is set not to exceed the height of the side wall of the frame 16 surrounding the outer periphery of the liquid crystal panel. With such a configuration, the liquid crystal panel, the protective plate 8, and the plate-like optical member are integrally bonded and fixed, and the impact resistance of the display device can be improved. Further, since the adhesive 18 covers the side surface of the liquid crystal panel, it is possible to protect the peeling force applied to the seal of the liquid crystal panel with the adhesive 18.

  Next, an electronic apparatus incorporating the display device of this embodiment will be described with reference to FIG. In addition, since the structure of a display apparatus is the same as the above-mentioned, description is abbreviate | omitted. As shown in the figure, the display device is housed in an outer case 19 of the electronic device. At this time, a step of about 0.5 mm is formed between the protective plate 8 and the side walls and the upper surface of the adhesive 18. Therefore, even when the display device having the structure in which the protective plate 8 is attached to the liquid crystal panel is pressed by the outer case 19 from the outer peripheral upper surface of the display device, the thickness of the outer case 19 is not affected and the display device is made thin. Can do. That is, if the height of the side wall and the height of the adhesive application surface are reduced by the case thickness of the outer case, the display device can be held by the outer case without increasing the thickness. Therefore, even if there is no step or adhesive fixing margin on the transparent body, it can be held by the outer case, and the outer periphery and thickness of the transparent body can be reduced to reduce the cost. Note that a gasket 20 is provided in the outer case to prevent entry of dust and the like.

  Hereinafter, this embodiment will be described with reference to the drawings. FIG. 4 is a top view of the display device of this embodiment. FIG. 5 is a diagram schematically showing a cross-sectional configuration of the present embodiment. This embodiment differs from Embodiment 1 in that the metal frame 21 is added to the constituent members of the display device. In addition, about the structure which overlaps with Example 1, description is abbreviate | omitted suitably.

  In this embodiment, the outer periphery of the liquid crystal panel is covered with the metal frame 21. As shown in FIG. 4, the metal frame 21 has an opening wider than the side wall of the frame body 16. The metal frame 21 is placed on the liquid crystal display device after the liquid crystal panel to which the protective plate 8 is attached and the backlight are bonded and fixed by the adhesive material 17. Thereafter, as in the first embodiment, the adhesive 18 is applied along the inner side of the side wall of the frame 16 to the remaining three sides excluding the side where the terminal portion is provided. By adding the metal frame 21 in this way, the strength of the display device on the driver IC 5 side can be increased.

  In the configuration of the electronic apparatus according to the present embodiment, as shown in FIG. 5, the outer case 19 of the electronic apparatus is provided outside the metal frame 21 and fixes the frame body 16 via the metal frame 21.

  Hereinafter, this embodiment will be described with reference to the drawings. FIG. 6 is a top view of the display device of this embodiment. FIG. 7 is a diagram schematically showing a cross-sectional configuration of the present embodiment. FIG. 8 is a top view illustrating the configuration of the backlight used in this embodiment. This example and Example 1 differ in the structure of the backlight and the size of the protective plate. In addition, about the structure which overlaps with Example 1, description is abbreviate | omitted suitably.

  In the display device of this embodiment, as shown in FIGS. 6 and 7, the protective plate 8 extends to the terminal portion side of the liquid crystal panel, and the end portion of the protective plate 8 faces the frame 16 of the backlight on both sides. It is fixed with tape 22. As shown in FIG. 8, double-sided tape 22 is provided on both ends of the backlight frame 16 on the 6 o'clock side, and a flange 23 is formed outside the double-sided tape 22. The flange 23 is adjacent to the extended end of the protective plate 8. With such a configuration, since the terminal portion on which the driver IC 5 is mounted is covered by the protective plate 8, the strength of the display device can be increased.

Further, in the configuration of the electronic apparatus of this embodiment, as shown in FIG. 7, the flange 23 of the frame body 16 is pressed and fixed by the outer case 19.
Note that the metal frame of the second embodiment may be provided in the display device and the electronic apparatus of the present embodiment.

  Moreover, in each above-mentioned Example, although the protective plate was used for the transparent body, not only this but a transparent body may be a touch panel and a touch switch.

  Further, in each of the above-described embodiments, the adhesive material 17 is provided in a square shape and the backlight and the liquid crystal panel are bonded and fixed. However, the number of bonded portions may be reduced as necessary. A double-sided adhesive tape may be used as the adhesive material 17.

  Moreover, you may reinforce a corner further using another adhesive agent. The type of adhesive is not limited to one. The fixing method of the protective plate 8 and the liquid crystal panel is not limited to the entire surface adhesion with the optical transparent adhesive, and the outer periphery of the display area may be fixed with an adhesive material or the like.

  The present invention can be applied to portable electronic devices such as mobile phones, PDAs, and electronic dictionaries and display devices thereof.

DESCRIPTION OF SYMBOLS 1 Counter substrate 2 Substrate 3 Light absorption polarizing plate 4 Polarizing element 5 Driver IC
6 First film substrate 7 Spacer 8 Protection plate 9 Optical adhesive 10 LED
DESCRIPTION OF SYMBOLS 11 2nd film board | substrate 12 Light guide plate 13 Diffusion film 14 Lens sheet 15 Reflective sheet 16 Frame body 17 Adhesive material 18 Adhesive 19 Exterior case 20 Gasket 21 Metal frame 22 Double-sided tape 23 Flange

Claims (6)

LCD panel,
A transparent body that is adhered to the display surface of the liquid crystal panel and is smaller than the outer periphery of the liquid crystal panel;
A plate-like optical member of the lighting device fixed to the back surface of the liquid crystal panel with an adhesive,
Accommodating the optical member and the liquid crystal panel, a frame body having a side wall surrounding the outer periphery excluding the terminal portions of the liquid crystal panel,
An adhesive provided in a gap between the side wall and the liquid crystal panel and the transparent body;
The upper surface of the adhesive is exposed from the gap between the side wall and the transparent body, is substantially the same height as the upper surface of the side wall, is higher than the upper surface of the liquid crystal panel, and is lower than the upper surface of the transparent body. A liquid crystal display device characterized by the above. The optical member is a light guide plate or an optical sheet disposed thereon,
The adhesive material is the provided on the outer circumference of the optical element, a liquid crystal display device according to claim 1, wherein the adhesive is characterized by preventing from entering the gap between the optical member and the liquid crystal panel.   The liquid crystal display device according to claim 1, further comprising a metal frame that covers an outer periphery of the liquid crystal panel. The side wall has an end portion surrounding the outer periphery at a position different from the terminal portion of the liquid crystal panel among the outer periphery of the liquid crystal panel,
The transparent body, the had covering the terminal portion of the liquid crystal panel, while being extended so as to face the end portion of said side wall, said end of said side wall of the end of the extended said transparent body is the frame The liquid crystal display device according to claim 1, wherein the liquid crystal display device is fixed to the portion .   The liquid crystal display device according to claim 4, wherein a flange is formed adjacent to the end portion of the frame body. LCD panel,
A transparent body that is adhered to the display surface of the liquid crystal panel and is smaller than the outer periphery of the liquid crystal panel;
A plate-like optical member of the lighting device fixed to the back surface of the liquid crystal panel with an adhesive,
Said accommodating the optical member and the liquid crystal panel, the liquid crystal panel frame body sidewall surrounding the periphery is formed excluding the terminal portions of,
An adhesive provided in a gap between the side wall and the liquid crystal panel and the transparent body;
An exterior case for fixing the side wall,
The upper surface of the adhesive is exposed from the gap between the side wall and the transparent body, is substantially the same height as the upper surface of the side wall, is higher than the upper surface of the liquid crystal panel, and is lower than the upper surface of the transparent body. An electronic device characterized by that.

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