JP2007298923A - Manufacturing method of electro-optical device, the electro-optical device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method and the like of an electro-optical device capable of enhancing positioning, strength and vibration resistance of a light guide plate. <P>SOLUTION: The manufacturing method of the electro-optical device includes a frame disposing step, a light guide plate disposing step and a display panel mounting step. In the frame disposing step, a frame, having an aperture part that has a size matched to the size of a two-dimensional shape of the light guide plate of an illuminator is fixed to and disposed on the inner side of a box-shaped outer frame. In the light guide plate disposing step, the light guide plate is inserted in the aperture part of the frame. In the display panel mounting step, a display panel is mounted on the frame so as to cover the aperture part. By doing so, the light guide plate can be fixed to the frame, even if no hook is provided to the light guide plate itself, and enhancement of strength and enhancement of vibration resistance to vibration generated during transportation and assembling such as mounting of the display panel can be attained. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for manufacturing an electro-optical device.

  In recent years, technologies for reducing the weight and size of electronic devices have been developed. In mobile phones and personal digital assistants (PDAs) as well, liquid crystal display devices are used as display devices to reduce weight and size.

  The liquid crystal display device is mainly composed of an illuminating device including a liquid crystal display panel in which liquid crystal is sandwiched between two substrates and a light guide plate having a light source such as an LED (Light Emitting Diode) on its end surface. As the liquid crystal display device is reduced in weight and size, the lighting device is also desired to be reduced in size and thickness. The thickness of the currently used light guide plate is about 0.7 mm to 0.8 mm, which is the same thickness as the LED. Such a light guide plate is provided with a hook on an end surface, and the light guide plate is fixed to the frame by hanging the hook on the frame. Conventionally, when a liquid crystal display device is assembled or transported, the light guide plate is handled in a state of being fixed to a resin frame in order to prevent the light guide plate from being damaged.

  Patent Document 1 below describes a technique for eliminating light loss by arranging an LED and a light guide plate in close contact with each other in such an illumination device.

JP 2004-349019 A

  However, when the thickness of the light guide plate becomes thinner than the thickness shown above, the light guide plate cannot be provided with a hook on the end surface, and therefore the light guide plate can be fixed to the frame. However, the liquid crystal display device has problems in terms of positioning and strength of the light guide plate, and vibration resistance against vibration during assembly and transportation.

  SUMMARY An advantage of some aspects of the invention is that it provides a method of manufacturing an electro-optical device that can improve the positioning, strength, and vibration resistance of a light guide plate.

  In one aspect of the present invention, a method for manufacturing an electro-optical device in which a display panel is illuminated by light emitted from a lighting device includes a frame having an opening that matches a planar shape of a light guide plate of the lighting device. A frame arranging step in which the light guide plate is fixedly arranged inside a box-shaped outer frame, a light guide plate arranging step in which the light guide plate is fitted into the opening of the frame, and the display on the frame so as to cover the opening A display panel attaching step for attaching the panel.

  The method for manufacturing the electro-optical device is, for example, a method for manufacturing a liquid crystal display device, and includes a frame arranging step, a light guide plate arranging step, and a display panel attaching step. In the frame arranging step, a frame having an opening that matches the size of the planar shape of the light guide plate of the lighting device is fixed and arranged inside the box-shaped outer frame. In the light guide plate arranging step, the light guide plate is fitted into the opening of the frame. In the display panel attaching step, the display panel is attached to the frame so as to cover the opening. By doing in this way, even if the light guide plate itself is not provided with a hook, the light guide plate can be fixed to the frame. Further, by using the light guide plate in a state of being housed in the outer frame, it is possible to improve the strength and to improve the vibration resistance against vibration during assembly such as transportation or attaching a display panel.

  In a preferred embodiment of the method for manufacturing the electro-optical device, in the display panel attaching step, an optical sheet is disposed on the surface of the light guide plate before the display panel is attached to the frame.

  In another aspect of the method for manufacturing the electro-optical device, the outer frame is provided with an opening on the bottom surface that is smaller than the size of the planar shape of the light guide plate. A sub display panel is mounted on the opening on the outer surface of the bottom surface of the outer frame. Accordingly, also in the double-sided display type electro-optical device, the light guide plate can be fixed to the frame, and the strength can be improved and the vibration resistance against vibration during assembly and transportation can be improved.

  In a preferred embodiment of the method of manufacturing the electro-optical device, in the frame arranging step, the optical sheet for the sub display panel is placed on the bottom surface of the outer frame before the frame is arranged inside the outer frame. Placed in.

  In another aspect of the present invention, an electro-optical device includes a frame having an opening that matches the size of the planar shape of the light guide plate, a box-shaped outer frame that is arranged with the frame fixed inside, The light guide plate fitted in the opening of the frame, and a display panel attached to the frame so as to cover the opening, and the thickness of the light guide plate is 0.45 mm or less. It is characterized by that. By doing so, the light guide plate can be fixed to the frame even when the thickness of the light guide plate is 0.45 mm or less, which is so thin that a hook cannot be provided. Further, by using the light guide plate in a state of being housed in the outer frame, it is possible to improve strength and improve vibration resistance against vibration during assembly and transportation.

  In one aspect of the electro-optical device, the outer frame is provided with an opening on the bottom surface that is smaller than the size of the planar shape of the light guide plate, and on the opening on the outer surface of the bottom surface of the outer frame, A display panel is installed. As described above, also in the double-sided display type electro-optical device, the light guide plate can be fixed to the frame, the strength can be improved, and the vibration resistance against vibration during assembly and transportation can be improved.

  In another aspect of the present invention, an electronic apparatus including the above-described electro-optical device in a display portion can be configured.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the present invention is applied to a liquid crystal display device.

[First embodiment]
(Liquid crystal display device)
FIG. 1 is a perspective view of the liquid crystal display device 100 according to the first embodiment, and FIG. 2 is a cross-sectional view taken along the broken line AA ′ of the liquid crystal display device 100 shown in FIG.

  The liquid crystal display device 100 is a single-sided display type liquid crystal display device, and mainly includes a lighting device 9 including a light source unit 15 and a light guide plate 11 and a liquid crystal display panel 20. The liquid crystal display panel 20 is disposed to face the upper surface of the light guide plate 11. A reflection sheet 14 is disposed on the lower surface of the light guide plate 11. The light source unit 15 includes a plurality of LEDs 16 that are point light sources.

  The light L emitted from each LED 16 enters the light guide plate 11, changes its direction by repeating reflection on the upper and lower surfaces of the light guide plate 11, and is emitted to the outside as illumination light La from the upper surface. The emitted light La travels toward the liquid crystal display panel 20.

  The liquid crystal display panel 20 has a display area substantially the same as the light emission area of the light guide plate 11. The liquid crystal display panel 20 is configured by laminating substrates 1a and 2a such as glass through a sealing material 3a to form a cell structure and enclosing the liquid crystal 4a therein. The liquid crystal display panel 20 includes a polarizing plate polar on the outer surfaces of the substrates 1a and 2a.

  Between the illumination device 9 and the liquid crystal display panel 20, for example, a diffusion sheet 12a and a prism sheet 13a are provided as optical sheets. The diffusion sheet 12a has a role of diffusing the light La emitted from the light guide plate 11 in all directions. The prism sheet 13a has a role of condensing the light La on the liquid crystal display panel 20, and has a shape in which a prism shape having a substantially triangular cross section is extended in one side direction (side direction perpendicular to the cross section). . The light La emitted from the light guide plate 11 passes through these optical sheets and then illuminates by passing through the liquid crystal display panel 20.

  The liquid crystal display panel 20 is directly mounted with a driver IC 40a which is a liquid crystal driving IC (driver) using COG (Chip On Glass) technology. The drive circuit of the liquid crystal display panel 20 is driven by the driver IC 40a, whereby the alignment state of the liquid crystal 4a is controlled.

  The illumination device 9 is housed in a box-shaped outer frame 62 formed of sheet metal or the like. Specifically, the reflective sheet 14 is disposed on the bottom surface inside the outer frame 62, and the frame-shaped frame 61 having an opening 61 a that matches the planar shape of the light guide plate 11 is located inside the outer frame 62. The light guide plate 11 is fitted into the opening 61 a of the frame 61. The frame 61 is made of resin or the like. The frame 61 is provided with the light source unit 16, and optical sheets such as a diffusion sheet 12 a and a prism sheet 13 a are disposed on the upper surface of the light guide plate 11. The liquid crystal display panel 20 is attached to the frame 61 so as to cover the opening 61a with, for example, a light-shielding frame-like double-sided tape 21a. In this way, the light guide plate 11 is fixed within the outer frame 62.

  In the liquid crystal display device 100 according to the first embodiment, the light guide plate 11 can be fixed within the outer frame 62 even if no hook is provided on the end face of the light guide plate 11. Therefore, when the thickness of the light guide plate 11 is so thin that it is difficult to form a hook on the end surface thereof, specifically, when the thickness of the light guide plate 11 is 0.45 mm or less, It is particularly preferable to adopt the structure of the liquid crystal display device 100 according to the first embodiment.

(Manufacturing method of liquid crystal display device)
Next, a method for manufacturing the liquid crystal display device 100 according to the first embodiment will be described with reference to the flowchart shown in FIG. FIG. 3 is a flowchart showing a method for manufacturing the liquid crystal display device 100 according to the first embodiment. 4 and 5 are cross-sectional views taken along the broken line BB ′ of the liquid crystal display device 100 shown in FIG. 1 and schematic diagrams in each manufacturing process.

  First, as shown to Fig.4 (a), the reflective sheet 14 is arrange | positioned on the bottom face of the box-shaped outer frame 62 (process P11). Since the reflection sheet 14 is formed to be approximately the same size as the bottom surface of the outer frame 62, the reflection sheet 14 is positioned at the same time as being disposed on the bottom surface of the outer frame 62. Next, as shown in FIG. 4B, a frame-like frame 61 having an opening 61a matched to the size of the planar shape of the light guide plate 11 is disposed inside the outer frame 62 (step P12). Specifically, a hook FK is provided on the side surface of the frame 61, and the frame 61 is fixedly disposed on the outer frame 62 by hooking the hook FK into a hole provided on the side surface of the outer frame 62. Is done. This process P12 is a frame arrangement process in the present invention.

  Thereafter, as shown in FIG. 4C, the light guide plate 11 is fitted and arranged in the opening 61a of the frame 61 (process P13). As described above, since the opening 61 a of the frame 61 is formed to fit the size of the planar shape of the light guide plate 11, the light guide plate 11 is fitted into the opening 61 a of the frame 61. , Positioning in the outer frame 62. At this time, the light source unit 15 is also disposed on the frame 61. This process P13 is a light guide plate arrangement process in the present invention.

  Next, as shown in FIG. 5A, after the optical sheet (in the example shown in FIG. 5A, the diffusion sheet 12a and the prism sheet 13a) is disposed on the surface of the light guide plate 11 (process P14). As shown in FIG. 5B, the liquid crystal display panel 20 is bonded to the frame 61 so as to cover the opening 61a with a frame-like double-sided tape 21a. Thereby, the liquid crystal display panel 20 is attached to the frame 61 (process P15), and the light guide plate 11 is completely fixed in the outer frame 62. This process P15 is a display panel attachment process in the present invention. In this way, the liquid crystal display device 100 is completed.

  As described above, in the method of manufacturing the liquid crystal display device according to the first embodiment, the frame 61 having the opening 61 a that matches the size of the planar shape of the light guide plate 11 is fixed inside the box-shaped outer frame 62. Frame placement step, a light guide plate placement step in which the light guide plate 11 is fitted into the opening 61a of the frame 61, and a display panel attachment step in which the liquid crystal display panel 20 is attached to the frame 61 so as to cover the opening 61a. And comprising. In this way, the light guide plate 11 can be fixed to the frame 61 even if the light guide plate 11 itself is not provided with a hook. Further, by using the light guide plate 11 in a state of being housed in the outer frame 62, it is possible to improve the strength and to improve the vibration resistance against vibration during assembly such as transportation or mounting of the liquid crystal display panel 20. . Therefore, for example, the cost conventionally required to protect the light guide plate 11 from vibration during transportation can be reduced.

  Moreover, in the manufacturing method of the liquid crystal display device according to the first embodiment, the light guide plate 11 and the diffusion sheet are bonded during the manufacturing process because only the frame 61 and the liquid crystal display panel 20 are bonded with the double-sided tape. Even when the dust is mixed between the diffusion sheet 12a and the prism sheet 13a, between the light guide plate 11 and the reflection sheet 14, and noticed after completion, the frame 61 and the liquid crystal display panel 20 The diffusion sheet 12a, the prism sheet 13a, and the light guide plate 11 can be easily removed by removing the double-sided tape between them, and the light guide plate 11 and the diffusion sheet 12a, the diffusion sheet 12a and the prism sheet 13a, The dust mixed between the optical plate 11 and the reflection sheet 14 can be removed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The liquid crystal display device 100a according to the second embodiment is a double-sided display type liquid crystal display device, unlike the single-sided display type liquid crystal display device 100 according to the first embodiment. The perspective view of the liquid crystal display device 100a according to the second embodiment is the same as the perspective view of the liquid crystal display device 100 according to the first embodiment shown in FIG. FIG. 6 is a cross-sectional view taken along the broken line AA ′ of the liquid crystal display device 100a according to the second embodiment. The liquid crystal display device 100 a is mainly configured to include a liquid crystal display panel 30 in addition to the illumination device 9 and the liquid crystal display panel 20.

  The liquid crystal display panel 30 is a panel that is smaller than the liquid crystal display panel 20 and has a smaller display area than the liquid crystal display panel 20. The liquid crystal display panel 30 corresponds to a sub display panel (a small display panel provided on the back of the main display panel) in terms of a double-sided display type mobile phone. The liquid crystal display panel 30 is also configured by bonding substrates 1b and 2b such as glass through a sealing material 3b and enclosing the liquid crystal 4b therein. In the present invention, the configuration of the liquid crystal display panel 30 is not limited to a specific one.

  The light L emitted from each LED 16 enters the light guide plate 11, changes its direction by repeating reflection on the upper and lower surfaces of the light guide plate 11, and is emitted to the outside as illumination lights La and Lb from the upper and lower surfaces of the light guide plate 11, respectively. Exit. In the light guide plate 11, the lower surface faces the liquid crystal display panel 30. Accordingly, the light La emitted from the upper surface travels toward the liquid crystal display panel 20, and the light Lb emitted from the lower surface proceeds toward the liquid crystal display panel 30.

  Also between the liquid crystal display panel 30 and the light guide plate 10, for example, a diffusion sheet 12b and a prism sheet 13b are provided as optical sheets. The diffusion sheet 12b diffuses the light Lb emitted from the light guide plate 11 in all directions, and the prism sheet 13b collects the diffused light Lb and guides it to the liquid crystal display panel 30. Light Lb emitted from the light guide plate 11 is illuminated by passing through the liquid crystal display panel 30 after passing through these optical sheets.

  Similarly to the liquid crystal display panel 20, the liquid crystal display panel 30 is directly mounted with a driver IC 40b as a liquid crystal driving IC (driver) by the COG technology. The drive circuit of the liquid crystal display panel 30 is driven by the driver IC 40b, whereby the alignment state of the liquid crystal 4b is controlled. The liquid crystal display panel 30 includes a polarizing plate polb on the outer surfaces of the substrates 1b and 2b.

  Also in the liquid crystal display device 100a according to the second embodiment, the lighting device 9 is housed in a box-shaped outer frame 62 formed of sheet metal or the like, similar to the liquid crystal display device 100 according to the first embodiment. That is, a frame-like frame 61 having an opening 61 a that matches the size of the planar shape of the light guide plate 11 is fixedly disposed inside the outer frame 62, and the light guide plate 11 is fitted into the opening 61 a of the frame 61. ing.

  In the liquid crystal display device 100 a according to the second embodiment, unlike the liquid crystal display device 100 in the first embodiment, an opening 64 is provided on the bottom surface of the outer frame 62 so that the light Lb reaches the liquid crystal display panel 30. Yes. The opening 64 is formed smaller than the size of the planar shape of the light guide plate 11. The reflection sheet 14 is installed in a portion other than the opening 64 on the bottom surface of the outer frame 62. Optical sheets such as the diffusion sheet 12 b and the prism sheet 13 b are disposed between the frame 61 and the reflection sheet 14. In addition, since the liquid crystal display device 100a according to the second embodiment is a double-sided display type liquid crystal display device, when an observer looks at the display screen of the liquid crystal display panel 20, the viewer of the liquid crystal display panel 30 passes through the opening 61a. Shadows may be visible. Therefore, the liquid crystal display device 100a may include a light absorption sheet that absorbs light instead of the reflection sheet. By providing the liquid crystal display device 100a with the light absorbing sheet, the observer can make the shadow of the liquid crystal display panel 30 invisible when the liquid crystal display panel 20 is viewed.

  Also in the liquid crystal display device 100a according to the second embodiment, as in the liquid crystal display device 100 according to the first embodiment, the liquid crystal display panel 20 includes a frame 61 so as to cover the opening 61a with, for example, a frame-shaped double-sided tape 21a. Thus, the light guide plate 11 is fixed in the outer frame 62.

  The liquid crystal display panel 30 as a sub display panel is attached and attached to the opening 64 on the bottom surface outside the outer frame 62 by, for example, a frame-shaped double-sided tape 21 b surrounding the opening 64.

  Even in the liquid crystal display device 100a according to the second embodiment, the light guide plate 11 can be fixed within the outer frame 62 even if the hook is not provided on the end surface of the light guide plate 11. Therefore, when the thickness of the light guide plate 11 is so thin that it is difficult to form a hook on the end surface thereof, specifically, when the thickness of the light guide plate 11 is 0.45 mm or less, It is particularly preferable to adopt the structure of the liquid crystal display device 100a according to the second embodiment.

(Manufacturing method of liquid crystal display device)
Next, a manufacturing method of the liquid crystal display device 100a according to the second embodiment will be described with reference to a flowchart shown in FIG. FIG. 7 is a flowchart showing a method for manufacturing the liquid crystal display device 100a according to the second embodiment. 8 and 9 are cross-sectional views taken along a broken line BB ′ of the liquid crystal display device 100a and schematic diagrams in each manufacturing process.

  First, as shown to Fig.8 (a), the reflective sheet 14 is arrange | positioned on the bottom face of the box-shaped outer frame 62 (process P21). Since the reflection sheet 14 is formed to have substantially the same size as the bottom surface of the outer frame 62, the reflection sheet 14 is positioned at the same time as being disposed on the bottom surface of the outer frame 62. Specifically, the opening 64 is provided on the bottom surface of the outer frame 62, and the reflection sheet 14 is also provided with the opening at the same position as the opening 64 on the bottom surface of the outer frame 62. Is arranged at a portion other than the opening 64 on the bottom surface of the outer frame 62.

  Next, as shown in FIG. 8B, the optical sheet (the diffusion sheet 12 b and the prism sheet 13 b in the example shown in FIG. 8B) is arranged on the surface of the reflection sheet 14 on the bottom surface of the outer frame 62. (Step P22). At this time, the diffusion sheet 12 b and the prism sheet 13 b are disposed across the opening 64.

  Next, as shown in FIG. 8C, as in the first embodiment, a frame-like frame 61 having an opening 61a that matches the size of the planar shape of the light guide plate 11 is used as the outer frame as in the frame placement step. 62 (step P23). A hook FK is provided on the side surface of the frame 61, and the frame 61 is fixedly disposed on the outer frame 62 by hooking the hook FK into a hole provided on the side surface of the outer frame 62.

  Thereafter, as shown in FIG. 9A, the light guide plate 11 is fitted into the opening 61a of the frame 61 and disposed as a light guide plate installation step (step P24). Also in the second embodiment, since the opening 61 a of the frame 61 is formed so as to match the planar shape of the light guide plate 11, the light guide plate 11 is fitted into the opening 61 a of the frame 61, and thereby the outer frame 62. Is positioned within. At this time, the light source unit 15 is also disposed on the frame 61.

  Next, as shown in FIG. 9B, the optical sheet (in the example shown in FIG. 9A, the diffusion sheet 12a and the prism sheet 13a) is disposed on the surface of the light guide plate 11 (process P25). .

  Thereafter, as shown in FIG. 9C, as a display panel attaching step, the liquid crystal display panel 20 is attached by being adhered to the frame 61 by the frame-like double-sided tape 21a so as to cover the opening 61a. Thereby, the light guide plate 11 is completely fixed within the outer frame 62. At this time, the liquid crystal display panel 30 is attached to the opening 64 on the bottom surface outside the outer frame 62 by, for example, being bonded by the frame-shaped double-sided tape 21b surrounding the opening 64 (process P26). . In this way, the liquid crystal display device 100a is completed.

  As can be seen from the above description, hooks are formed on the light guide plate 11 itself by using the method of manufacturing the liquid crystal display device 100a according to the second embodiment, similarly to the liquid crystal display device 100 according to the first embodiment. Even if it is not provided, the light guide plate 11 can be fixed to the frame 61. Further, by using the light guide plate 11 in a state of being housed in the outer frame 62, the strength is improved and the vibration resistance against vibrations during assembly such as transportation or mounting of the liquid crystal display panels 20 and 30 is improved. Can do.

  Also in the liquid crystal display device 100a according to the second embodiment, as in the first embodiment, the light guide plate 11 and the optical sheet (the diffusion sheet 12a) can be obtained by removing the double-sided tape between the frame 61 and the liquid crystal display panel 20. 12b and prism sheets 13a and 13b) can be easily removed, and dust mixed between the light guide plate 11 and the optical sheet and between the optical sheets can be removed.

[Electronics]
Next, specific examples of electronic devices to which the liquid crystal display devices 100 and 100a according to the above-described embodiments can be applied will be described with reference to FIGS.

  First, an example in which the liquid crystal display device 100 according to the first embodiment is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 10A is a perspective view showing the configuration of this personal computer. As shown in the figure, a personal computer 710 includes a main body 712 having a keyboard 711 and a display 713 to which the liquid crystal display device 100 according to the present invention is applied.

  Next, an example in which the liquid crystal display device 100 according to the first embodiment is applied to a display unit of a mobile phone will be described. FIG. 10B is a perspective view showing the configuration of this mobile phone. As shown in the figure, the cellular phone 720 includes a plurality of operation buttons 721, a reception port 722, a transmission port 723, and a display unit 724 to which the liquid crystal display device 100 according to the present invention is applied.

  Next, an example in which the liquid crystal display device 100a according to the second embodiment is applied to a display unit of a mobile phone will be described. FIG. 11 shows a mobile phone 2000 which is an embodiment of the electronic apparatus of the present invention. The cellular phone 2000 includes a main body 2001 having various operation buttons and a built-in microphone, and a display unit 2002 having a display screen and an antenna and a built-in speaker. The main body 2001 and the display 2002 are mutually connected. It is configured to be foldable. FIG. 11A shows a view when the mobile phone 2000 is opened, and FIG. 11B shows a view when the mobile phone 2000 is folded. The liquid crystal display device 100a is built in the display unit 2002, the display screen 110 of the main liquid crystal display panel 20 is visible on the inner surface, and the sub liquid crystal display is displayed on the outer surface. The display screen 130 of the panel 30 is configured to be visible.

  In addition, as an electronic apparatus to which the liquid crystal display device 100 according to the present invention can be applied, in addition to the personal computer shown in FIG. 10A and the cellular phone shown in FIG. 10B and FIG. , Viewfinder type / monitor direct view type video tape recorder, car navigation device, pager, electronic notebook, calculator, word processor, workstation, videophone, POS terminal, digital still camera, and the like.

1 is a perspective view of a liquid crystal display device according to a first embodiment. 1 is a cross-sectional view of a liquid crystal display device according to a first embodiment. It is a flowchart which shows the manufacturing method of the liquid crystal display device which concerns on 1st Embodiment. It is a schematic diagram which shows each manufacturing process of the liquid crystal display device which concerns on 1st Embodiment. It is a schematic diagram which shows each manufacturing process of the liquid crystal display device which concerns on 1st Embodiment. It is sectional drawing of the liquid crystal display device which concerns on 2nd Embodiment. It is a flowchart which shows the manufacturing method of the liquid crystal display device which concerns on 2nd Embodiment. It is a schematic diagram which shows each manufacturing process of the liquid crystal display device which concerns on 2nd Embodiment. It is a schematic diagram which shows each manufacturing process of the liquid crystal display device which concerns on 2nd Embodiment. It is a figure which shows the example of the electronic device to which the liquid crystal display device of 1st Embodiment is applied. It is a figure which shows the example of the electronic device to which the liquid crystal display device of 2nd Embodiment is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 9 Illuminating device, 11 Light guide plate, 15 Light source part, 16 LED, 61 frame, 62 Outer frame, 20 Liquid crystal display panel, 100 Liquid crystal display device

Claims (7)

A method of manufacturing an electro-optical device in which a display panel is illuminated by light emitted from an illumination device,
A frame placement step in which a frame having an opening matched to the size of the planar shape of the light guide plate of the lighting device is fixed and arranged inside the box-shaped outer frame;
A light guide plate placement step in which the light guide plate is fitted into the opening of the frame;
A display panel attaching step of attaching the display panel to the frame so as to cover the opening.   2. The method of manufacturing an electro-optical device according to claim 1, wherein, in the display panel attachment step, an optical sheet is disposed on a surface of the light guide plate before the display panel is attached to the frame. In the outer frame, an opening smaller than the size of the planar shape of the light guide plate is provided on the bottom surface,
3. The method of manufacturing an electro-optical device according to claim 1, wherein in the display panel mounting step, a sub display panel is further mounted on an opening on an outer surface of a bottom surface of the outer frame.   The optical frame for a sub display panel is arranged on the bottom surface of the outer frame before the frame is arranged inside the outer frame in the frame arranging step. Manufacturing method of electro-optical device. A frame having an opening adapted to the size of the planar shape of the light guide plate;
A box-shaped outer frame formed by fixing the frame to the inside;
The light guide plate fitted in the opening of the frame;
A display panel attached to the frame so as to cover the opening,
An electro-optical device, wherein the light guide plate has a thickness of 0.45 mm or less.   The outer frame is provided with an opening on the bottom surface that is smaller than the size of the planar shape of the light guide plate, and a sub display panel is mounted on the opening on the outer surface of the bottom surface of the outer frame. The electro-optical device according to claim 5.   An electronic apparatus comprising the liquid crystal display device according to claim 5 in a display unit.

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