JP2001155525A - Surface light source unit, and display device and electronic equipment having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface light source unit capable of approximately unifying the amount of light radiated from a light guide plate in a radiating surface, a compact and light-weighted display device capable of being manufactured with a high accuracy in positioning with less man-hours, and electronic equipment using the same. SOLUTION: In this surface light source unit 40, a fluorescent tube 50 is mounted along one end surface 45 of a light guide plate 44, the circumference of the fluorescent tube 50 excluding the side of the light guide plate 44, is mostly covered with a reflector 66, and the fluorescent tube 50 is longer than the length of the one end surface 45 of the light guide plate 44, and the reflector is provided with a shielding part 67 for covering a part projecting from the light guide plate, of the fluorescent tube, and a fixing part 68 for fixing the fluorescent tube 50 to prevent its longitudinal movement. The light guide plate 44 is located at a predetermined position of a plane approximately in parallel with a bottom part 57 in this surface light source unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a surface light source unit, and a display device and an electronic apparatus having the same.

[0002]

2. Description of the Related Art As a surface light source unit used in a display device such as a liquid crystal display device, a light source is arranged along one end face of a light guide plate, and the remaining end face of the light guide plate and the light guide plate are arranged. Is formed by covering the back surface of the base with a fixed frame having light reflectivity. In addition, in such a surface light source unit, in order to direct most of the light from the light source to the light guide plate, it is common to use a reflector that covers the light source except for the light guide plate side and reflects the light toward the light guide plate. It is a target.

As a light source, a fluorescent tube having high energy efficiency, for example, a cold cathode tube is often used. The fluorescent tube is provided with electrodes near both ends thereof, and has a property that light emission is small in the vicinity thereof. Therefore, when a fluorescent tube having a length substantially equal to the width of the light guide plate is arranged along one end surface of the light guide plate, a problem occurs that light emission from the light guide plate at a position corresponding to the vicinity of the end of the fluorescent tube is small. .

Therefore, the length of the fluorescent tube is made longer than the corresponding side of the light guide plate so that only the central portion of the fluorescent tube having appropriate brightness is arranged along one side of the light guide plate. May be arranged so that the vicinity of the end of the light guide plate protrudes from a corresponding side of the light guide plate. However, when the fluorescent tube is protruded from a corresponding side of the light guide plate in this way,
There is a problem that unnecessary leakage light is emitted from near the end of the fluorescent tube.

[0005] In some cases, a reflector is superimposed on a part of the front and back surfaces of the light guide plate, and is adhered and fixed to the light guide plate with a double-sided tape or the like. However, when the reflector is bonded to the light guide plate using a double-sided tape, the double-sided tape is interposed between the light guide plate and the reflector, and the double-sided tape reduces the in-plane luminance and light use efficiency. Will drop. Moreover,
The work of attaching the reflector using double-sided tape, etc.
This is an operation that requires careful attention in positioning the reflector and requires a large number of man-hours. Further, since the reflector partially overlaps the light guide plate, a part of the front surface of the light guide plate is covered by the reflector, and the area cannot be used as a surface light source, and the area corresponding to the area cannot be used. Only the light guide plate needs to be enlarged.
Therefore, in such a surface light source unit, the ratio of the light emitting surface area to the outer shape decreases.

The present invention has been made in view of the above points, and has as its object to solve at least one of the following problems, a surface light source unit, and a display device and an electronic device having the same. To provide equipment.

1) The amount of light radiated from the light guide plate is substantially uniform in the radiation plane.

2) Unnecessary leakage light is not emitted from near the end of the light source.

3) High light utilization efficiency.

4) Man-hours for manufacturing can be reduced.

5) The ratio of the light emitting surface area to the outer shape is high.

[0012]

(1) A surface light source unit according to the present invention comprises a light guide plate, a light source portion arranged along one end surface of the light guide plate, and a light guide plate surrounding the light source portion. A reflector that wraps substantially except for the side, and reflects light from the light source unit toward the light guide plate, wherein the light source unit is longer than the length of the one end surface of the light guide plate, and the reflector is The light source unit includes a shielding unit that covers a portion protruding from the light guide plate.

According to the present invention, the light source unit is attached to one end surface of the light guide plate in a state in which a region near the both ends where the amount of light generated when the fluorescent tube is used as the light source unit is small and protrudes from one end surface of the light guide plate. Therefore, the light guide plate can emit a substantially uniform light amount from one end surface of the light guide plate regardless of the position in the length direction thereof. Further, since the portion where the light source protrudes from the light guide plate is covered by the shielding portion of the reflector, it is possible to prevent unnecessary light from leaking from that portion.

(2) The surface light source unit according to the present invention comprises:
The reflector is provided with a fixing portion for fixing the light source portion so as not to move in the length direction.

According to the present invention, the light source section can be fixed so as not to move in the length direction by the fixing section of the reflector.

(3) The surface light source unit according to the present invention comprises:
A light guide plate fixing frame having a bottom surface portion and fixing the light guide plate from the back side is further provided, and the light guide plate fixing frame is erected from the bottom portion along another end surface of the light guide plate, It has a plurality of third positioning portions for positioning the light guide plate at a predetermined position.

According to the present invention, since the light guide plate can be positioned at a predetermined position by the plurality of third positioning portions provided on the light guide plate fixing frame, the light guide plate and the light guide plate fixing frame can be shortened in a short man-hour. Can be manufactured with high precision alignment. Further, since the positioning of the light guide plate and the light guide plate fixing frame can be performed without using a double-sided tape or the like, a frame region which cannot be used as a light emitting surface for attaching a double-sided tape or the like, and thus the outer shape increases. There is no increase in weight or thickness due to double-sided tape or the like.

(4) The surface light source unit according to the present invention comprises:
The plurality of third positioning portions are formed in a planar shape that covers another end surface of the light guide plate.

According to the present invention, the third positioning portion is formed in a flat shape covering the end face of the light guide plate other than the light source portion. Therefore, if the side of the third positioning portion facing the light guide plate has a sufficient reflectance, the efficiency of using light from the light source unit can be improved by the third positioning portion.

If the third positioning portion has a light-shielding property, the light emitted from the light guide plate can be made to enter only the display area of the liquid crystal panel so that the light does not leak to the surroundings. Thus, in the liquid crystal panel, irradiation of light from the backlight unit to a circuit area formed around the display area, for example, a drive circuit is prevented. As a result, malfunction or deterioration due to light leakage current or the like does not occur in a circuit region formed around the display region, and the reliability of the electro-optical device can be improved.

(5) The surface light source unit according to the present invention comprises:
The light guide plate fixing frame and the reflector are integrally formed in a predetermined shape.

In the present invention, since the light guide plate fixing frame and the reflector are integrally formed in a predetermined shape, the light guide plate fixing frame or the reflector is fixed to the light guide plate at a predetermined position, thereby fixing the light guide plate. The frame and the reflector are fixed to the light guide plate at predetermined positions. Therefore, at least one of the light guide plate fixing frame and the reflector does not need to be bonded to the light guide plate using a double-sided tape or the like, and a reduction in in-plane luminance or light use efficiency due to the interposition of the double-sided tape or the like is suppressed. Can be. Further, the number of steps for bonding using a double-sided tape or the like can be reduced.

(6) A display device according to the present invention includes any one of the surface light source units and a display panel disposed on a front side of the surface light source unit.

According to the present invention, it is possible to obtain a display device having a substantially uniform brightness distribution in the display surface.

(7) The display device according to the present invention includes: the surface light source unit according to any one of (3) to (5);
A display panel disposed on the front side of the surface light source unit, and a spacer including a second frame portion, fixing the display panel from the back side, and fixing the surface light source unit from the front side, The light guide plate fixing frame and the spacer are integrally formed with one side common.

According to the present invention, since the light guide plate fixing frame and the spacer are integrally formed with a common side, the mantle is hardly required, and the light guide plate fixing frame and the spacer can be accurately formed. A display device that can be manufactured by alignment is obtained.

(8) In the display device according to the present invention, a cut portion is formed on one side common to the light guide plate fixing frame and the spacer at a boundary line between the light guide plate fixing frame and the spacer. It is characterized by the following.

According to the present invention, since the notch is formed at the boundary between the light guide plate fixing frame and the spacer on one side common to the light guide plate fixing frame and the spacer, it is easily bent at the boundary line. The display device can be manufactured with the light guide plate fixing frame and the spacer in a predetermined positional relationship.

(9) In the display device according to the present invention, the spacer may be arranged so that the second spacer faces the surface light source unit.
It has a second projecting portion projecting from the frame portion.

According to the present invention, after the spacer and the surface light source unit are set in a predetermined positional relationship, the second protrusion provided on the spacer is bent so as to go behind the surface light source unit, thereby achieving high reliability. Thus, an integrated display device can be easily formed.

(10) In the display device according to the present invention, the spacer is erected from the second frame portion and abuts on an end face of the display panel to make the display panel substantially parallel to the second frame portion. It has a plurality of second positioning portions for positioning at predetermined positions in a simple plane.

According to the present invention, the display panel can be positioned at a predetermined position in a plane substantially parallel to the second frame by the plurality of second positioning portions provided on the spacer. And a display device which can be manufactured with high precision alignment between the steps with short man-hours. In addition, since the positioning between the display panel and the spacer can be performed without using a double-sided tape, the frame area in which no display is performed because the double-sided tape is stuck is not increased, and thus the outer shape is not increased. There is no increase in weight or thickness due to the above.

(11) The display device according to the present invention is characterized in that the light guide plate fixing frame and the spacer are formed of metal.

According to the present invention, since the light guide plate fixing frame and the spacer are formed of metal, the heat generated from the backlight unit can be efficiently radiated to the outside of the backlight unit due to the high thermal conductivity. it can. Further, a display device having a light guide plate fixing frame and spacers which are thin, have sufficient strength, and have high heat dissipation properties can be obtained. Also,
Since metal can be formed with high light-shielding properties, light leakage from the light guide plate can be suppressed, and thus malfunction or deterioration of a driving circuit or a display panel due to light leakage can be prevented.

(12) The display device according to the present invention comprises (1)
In 1), one of the light guide plate fixing frame and the spacer is grounded at one point.

According to the present invention, since the light guide plate fixing frame and the spacer, which are integrally formed with one side common, are grounded at any one point, the panel has a high noise reduction effect obtained by single point grounding. Display quality and reliability can be improved.

(13) The display device according to the present invention is characterized in that the light guide plate fixing frame and the spacer are formed of resin.

According to the present invention, since the light guide plate fixing frame and the spacer are formed of resin, heat conduction through the light guide plate fixing frame and the spacer is small, and a display electrically insulated thereby is provided. A device is obtained.

(14) In the display device according to the present invention, the display panel includes a display region and a peripheral circuit region formed around the display region, and the second frame portion of the spacer includes: It is formed at a position corresponding to the peripheral circuit region.

According to the present invention, since the second frame portion of the spacer located between the display panel and the surface light source unit is formed at a position corresponding to the peripheral circuit area of the display area,
Light and heat from the surface light source unit to the peripheral circuit area
It can be at least partially blocked by the frame. Therefore, it is possible to reduce the possibility that a leak current occurs due to light or heat reaching a circuit formed in the peripheral circuit region.

(15) The display device according to the present invention comprises:
In 4), the spacer is provided with a wall portion that keeps an interval between the second frame portion and the display panel and that prevents light leakage from the surface light source unit to the peripheral circuit region.

According to the present invention, the distance between the display panel and the surface light source unit is increased by the wall provided on the spacer, so that the influence of the heat of the surface light source unit on the display panel can be further reduced. it can. Further, since the backlight unit and the liquid crystal panel are further separated by the wall provided in the spacer, the possibility that the backlight unit and the liquid crystal panel are mutually damaged due to contact between the backlight unit and the liquid crystal panel is reduced. Furthermore, moire occurs between the liquid crystal panel and the backlight unit,
The occurrence of interference fringes between the liquid crystal panel and the backlight unit can be prevented by appropriately setting the height of the projection. Therefore, the wall and the projection provided on the spacer can prevent malfunction or deterioration of the peripheral circuit of the display panel due to light or heat from the backlight, and can improve reliability.

(16) The display device according to the present invention is characterized in that the area surrounded by the four sides of the light guide plate fixing frame is smaller than the area surrounded by the four sides of the spacer.

According to the present invention, the spacer needs to have a plane shape corresponding to at least the entire area of the display panel, and the light guide plate fixing frame has a plane shape corresponding to the light guide plate having a plane shape substantially corresponding to the display area of the display panel. The planar shape of the light guide plate fixing frame is made smaller than the planar shape of the spacer by utilizing the point that the shape only needs to be provided. by this,
Since the light guide plate fixing frame is small, a display device that is small and lightweight compared to the size of the display area can be obtained.

(17) The display device according to the present invention comprises:
A panel fixing frame for fixing the display panel from the front side, the panel fixing frame and the spacer being integrally formed with one side common.

According to the present invention, since the spacer and the panel fixing frame are integrally formed, the display device can be manufactured by aligning the spacer and the panel fixing frame with high accuracy with little man-hour. Is obtained.

(18) An electronic apparatus according to the present invention includes any one of the above display devices as a display unit.

According to the present invention, it is possible to obtain an electronic apparatus having the above-described functions and effects of the display device and having highly reliable display means.

[0049]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below more specifically with reference to the drawings.

1. First Embodiment 1.1 Display Device In this embodiment, a liquid crystal display device will be described as an example of the display device of the present invention. FIG. 1 is an exploded perspective view schematically showing a liquid crystal display device 10 as a display device of the present embodiment. As shown in FIG. 1, a liquid crystal display device 10 of the present embodiment includes a liquid crystal panel 14 as a display panel.
And an inverter 6 arranged on the back side of the backlight unit 40 arranged on the back side of the liquid crystal panel 14.
0.

Further, as shown in FIGS. 1 and 3, the liquid crystal display device 10 includes a panel fixing member disposed on the front side of the liquid crystal panel 14 as a frame member for protecting the above-described components and maintaining a predetermined positional relationship. The frame 12, the spacer 30 disposed between the liquid crystal panel 14 and the backlight unit 40 (surface light source unit), and the light guide plate fixed disposed on the back side of the light guide plate 44 which is a part of the backlight unit 40 Frame 5
6 and a reflector 66 that covers a light source unit that is a part of the backlight unit 40. In the present embodiment, the panel fixing frame 12 and the spacer 30, and the spacer 30 and the light guide plate fixing frame 56 have one side common to each pair, and are integrally formed so as to be folded in a zigzag shape as a whole. ing. Further, the light guide plate fixing frame 56 and the reflector 66 are also integrally formed with one side common.

The panel fixing frame 12, the spacer 30, the light guide plate fixing frame 56, and the reflector 66 are made of metal, for example,
It is formed by pressing a single metal plate made of a copper-based material such as phosphor bronze, a tin-plated steel plate (commonly known as tinplate), or an aluminum material. Phosphor bronze is particularly preferred because of its low specific resistance and excellent strength, elasticity, and corrosion resistance. In addition, tin-plated steel sheets can be obtained at low cost. Also, aluminum material is excellent in weight reduction, and it is necessary to select a material according to the application. As described above, since the panel fixing frame 12, the spacer 30, the light guide plate fixing frame 56, and the reflector 66 are formed of metal, these frame members have sufficient strength and high heat dissipation while being thin. Can be.

Further, the panel fixing frame 1 integrally formed
2. The spacer 30, the light guide plate fixing frame 56, and the reflector are grounded at least at one point by a lead wire connected to one place (for example, one place of the light guide plate fixing frame). Thus, since the frame members, that is, the panel fixing frame 12, the spacer 30, the light guide plate fixing frame 56, and the reflector 66 are formed of metal, they can be grounded to have a shielding effect. Moreover, since they are integrally formed, they can be easily grounded at one point, and the influence on the display quality of the liquid crystal panel due to noise generated from the inverter 60, the fluorescent tube 50, the peripheral circuit area, or the external environment is reduced.
The frame members can be further reduced in comparison with the case where they are individually grounded.

Then, the panel fixing frame 12 and the spacer 3
In each of the pair of 0 and the spacer 30 and the light guide plate fixing frame 56, a cut portion is formed in advance on a common one-side boundary line. For example, FIG.
FIG. 4 is a cross-sectional view illustrating a vicinity of a boundary of one side common to the spacer 2 and a spacer 30 as a state before bending. As shown in this figure, a cut portion 38 is formed at a boundary line on one common side. For example, when the panel fixing frame 12 and the spacer 30 are formed of a tin-plated steel plate (commonly called tin) having a thickness of 0.25 mm, It has been confirmed that a notch 38 having a depth of about ／ of the material thickness is appropriate. Note that the notch 38 is desirably cut in a V-shape as shown in a sectional view in FIG. Thereby, the integrally formed panel fixing frame 12 and the spacer 3 are formed.
0 can be easily bent at these boundaries, and the panel fixing frame 12 and the spacer 30 can be brought into a predetermined positional relationship. The depth of the cut portion 38 is appropriately determined depending on the material to be used and its thickness. In addition, by bending the bent portion where the cut portion 38 is formed in advance by about half of the predetermined bending amount, the bending at the time of assembling becomes easy and the accuracy of the bending position can be improved. Although the cut portion 38 formed at the boundary of one common side between the panel fixing frame 12 and the spacer 30 is described here, the cut portion is similarly formed at the boundary between the spacer 30 and the light guide plate fixing frame 56. Are formed. The cut portion is not continuous in a V-shaped cross section as shown in FIG. 3, but may be provided with, for example, a perforated or non-penetrated cut in a perforated shape.

The liquid crystal panel 14 is disposed between the panel fixing frame 12 and the spacer 30 as shown in FIG. In the liquid crystal panel 14, liquid crystal is sealed between the active matrix substrate 15 and the counter substrate 24, and the substrates 15, 2
A polarizing plate 85 (the rear polarizing plate 84 is not shown in FIG. 1) is attached to the outer surface of the substrate 4. Also,
The liquid crystal panel 14 is provided with a sealing portion 22 made of, for example, a UV curable resin on one end face 23 to seal the liquid crystal after the liquid crystal is injected. The sealing portion 22 is formed, for example, on the end face 2 of the liquid crystal panel 14 in order to realize highly reliable sealing.
For the purpose of increasing the contact area between the sealing member 3 and the sealing portion 22 to prevent the intrusion of air or the like from outside, it is formed as a protruding portion having a swelling shape from the end face 23. And
A wiring substrate 82, for example, an FPC (flexible wiring substrate) is connected to a terminal portion of the liquid crystal panel 14.

As will be described in detail later, the liquid crystal panel 14
Are formed with a display region and a peripheral circuit region formed around the display region. In the peripheral circuit area, for example, a driving circuit for driving each pixel of the liquid crystal panel 14 on a polysilicon layer formed on the active matrix substrate 15, a signal circuit for generating image information to be displayed on the liquid crystal panel 14, and an inspection circuit At least one of them is formed.

The backlight unit 40 as a surface light source unit is disposed between the spacer 30 and the light guide plate fixing frame 56 as shown in FIG. The backlight unit 40 includes a fluorescent tube 50 as a light source unit, a light guide plate 44, and a lens sheet 42. Fluorescent tube 5
The output of the inverter 60 is connected to 0 via a connection section 51 for connecting a power supply of a predetermined voltage. Light guide plate 44
A fluorescent tube 50 is arranged along one end surface 45 of the liquid crystal panel 50, and guides light from the fluorescent tube 50 toward the entire display area of the liquid crystal panel 14. The light guide plate 44 has a thicker wedge-shaped cross-sectional shape on the fluorescent tube 50 side. Light guide plate 4
4 has such a shape, so that the light guide plate 44
The amount of light radiated toward the liquid crystal panel 14 from the fluorescent tube 5
It is made uniform near 0 and at a position distant from the fluorescent tube 50. The lens sheet 42 is disposed on the front side of the light guide plate 44 to improve light use efficiency.

In the backlight unit 40 of this embodiment, the fluorescent tube 50 is connected to the corresponding end face 45 of the light guide plate 44.
It is formed longer than the length. Then, the fluorescent tube 50 is connected to the light guide plate 4 in a state where the area near the both ends of the fluorescent tube 50 where the amount of light is small protrudes from one side where the end face 45 of the light guide plate 44 is located.
4 are arranged along the end face 45. Therefore, a substantially uniform amount of light can be made to enter from the fluorescent tube 50 from any position in the length direction of the end surface 45 of the light guide plate 44, so that a substantially uniform amount of light can be emitted from the light guide plate 44. .

The reflector 66 covers the periphery of the fluorescent tube 50 except for the side of the light guide plate 44, and reflects light from the fluorescent tube 50 toward the light guide plate 44. Further, the fluorescent tube 50 is connected to the light guide plate 4.
The reflector 66 includes a shielding portion 67 that covers a portion of the fluorescent tube 50 that protrudes from the light guide plate 44 corresponding to the length protruding from the light guide plate 44. As described above, the fluorescent tube 50 is moved by the shielding part 67 of the reflector 66 to the light guide plate 44.
Since the protruding portion is covered, it is possible to prevent unnecessary light from leaking from that portion. Further, the reflector 66 includes a fixing portion 68, and the fixing portion 68
Abuts against a holding portion 52 located at an end of the fluorescent tube 50, for example, a rubber holder, and fixes the fluorescent tube 50 so as not to move in the longitudinal direction. Further, after the fluorescent tube 50 is housed in the reflector 66, the bent portions 69, 69
Is folded towards.

The inverter 60 is disposed on the back side of the light guide plate fixing frame 56 and is connected to the fluorescent tube 5 of the backlight unit 40.
Power 0. The inverter 60 outputs, for example, an input 5 V DC voltage as an AC voltage of 250 V and 100 kHz and supplies the AC voltage to the fluorescent tube 50. Since the inverter 60 is disposed immediately behind the backlight unit 40 with the light guide plate fixing frame 56 interposed therebetween and near the position where the fluorescent tube 50 is disposed, the wiring to the connection portion 51 of the fluorescent tube 50 is shortened. be able to. Thereby, the leak current from the wiring between the inverter 60 and the fluorescent tube 50 is reduced, and the fluorescent tube 50 can emit light with high energy efficiency. Further, since the wiring is shortened, parasitic capacitance due to the wiring can be reduced.

As shown in FIG. 2, the panel fixing frame 12 includes a frame portion 12a as a first frame portion, and a display window 13 having a size corresponding to the display area of the liquid crystal panel 14. Is physically protected from the front side.
As described above, the panel fixing frame 12 is integrally formed with one side of the spacer 30 in common. Panel fixing frame 12
The liquid crystal panel 14 is accommodated between the liquid crystal panel 14 and the spacer 30 and is bent at a common one-side boundary line, so that the panel fixing frame 12, the liquid crystal panel 14, and the spacer 30 have a predetermined positional relationship. Thus, the liquid crystal display device 10
Since the panel fixing frame 12 and the spacer 30 are integrally formed so that one side is common, the panel fixing frame 12 and the spacer 30 can be aligned and manufactured with high accuracy with almost no man-hours.

The panel fixing frame 12 has a projection 12b as a first projection projecting from the frame 12a toward the backlight unit 40. Projection 1
2b, the back side of the light guide plate fixing frame 56, that is, the backlight unit 4 after the liquid crystal display device 10 is assembled.
It is bent toward the back side of 0. In this manner, the protruding portion 12b is bent, so that the integrity of the panel fixing frame 12 and other portions including the light guide plate fixing frame 56 can be maintained.

The spacer 30 has a frame portion 3 as a second frame portion.
0a, the liquid crystal panel 14 and the backlight unit 4
The liquid crystal panel 14 is fixed from the back side, and the backlight unit 40 is fixed from the front side. As described above, by disposing the spacer 30 between the liquid crystal panel 14 and the backlight unit 40, a predetermined gap is formed between the liquid crystal panel 14 and the backlight unit 40, and the occurrence of interference fringes is prevented. and,
Moiré caused by optical interference between pixels of the liquid crystal panel 14 and stripes of the lens sheet 42 of the backlight unit 40 is prevented. Further, by disposing the spacer 30 between the liquid crystal panel 14 and the backlight unit 40, a gap is formed between the liquid crystal panel 14 and the backlight unit 40, and the liquid crystal panel 14 and the lens sheet 42 are in contact with each other. Without doing so, it is possible to prevent the lens sheet 42 from being damaged or damaged.

As shown in FIG. 4, which is a perspective view seen from the direction of arrow A shown in FIG. 1, the spacer 30 has a positioning portion 30d as a second positioning portion provided upright from the frame portion 30a. Have multiple. Multiple positioning parts 30d
Abuts on the end faces of the liquid crystal panel 14 to position the liquid crystal panel 14 at a predetermined position in a plane substantially parallel to the frame portion 30a. Thus, the liquid crystal panel 1 is
Since the plurality of positioning portions 30d for positioning the liquid crystal panel 4 are provided, a displacement between the spacer 30 and the liquid crystal panel 14 occurs, and the frame unit 30a causes the backlight unit 40d.
Part of the light from the
0 and the display window 13 of the panel fixing frame 12 and the liquid crystal panel 1
4 can be prevented from being in a state in which a part of the display cannot be seen due to a positional shift between the display device and the display device. Further, the positioning portion 30d allows the liquid crystal panel 14 and the spacer 30 to be positioned with high accuracy with a short man-hour. Further, the positioning between the liquid crystal panel 14 and the spacer 30 can be performed without using a double-sided tape or the like. There is no increase in weight or thickness due to the tape or the like.

The positioning portion 30 d facing the end surface 23 where the sealing portion 22 of the liquid crystal panel 14 is located is provided at a position avoiding the projecting sealing portion 22, and comes into contact with the end surface 23 of the liquid crystal panel 14. I have. Therefore, the liquid crystal panel 14 is stably positioned and fixed at a predetermined position in a plane substantially parallel to the frame 30 a of the spacer 30 irrespective of the presence of the protruding sealing portion 22.

Further, the spacer 30 is provided on the light guide plate fixing frame 5.
A protrusion 30b as a second protrusion protruding from the frame 30a in the direction of No. 6 is provided. The protruding portion 30b is bent toward the rear side of the light guide plate fixing frame 56, and comes into contact with the light guide plate fixing frame 56. Therefore, after the spacer 30, the backlight unit 40, and the backlight fixing frame 56 have a predetermined positional relationship, the spacer 30
The spacer 30, the backlight unit 40, and the light guide plate fixing frame 56 can be integrated with high reliability by bending the second protrusion provided on the rear panel so as to go behind the backlight fixing frame 56. .

As described above, the spacer 30 is also integrally formed with the light guide plate fixing frame 56 with one side common.
The backlight unit 40 is accommodated between the spacer 30 and the light guide plate fixing frame 56, and is bent at a common one-sided boundary line to have a predetermined positional relationship with the backlight unit 40 and the light guide plate fixing frame 56. Further, as described above, this bending is performed by the spacer 30 and the light guide plate fixing frame 56.
Spacer 30 and light guide plate fixing frame 5 on one side common to
Since the cut portion is formed at the boundary line of No. 6, the cut can be easily made at the boundary line. As described above, since the spacer 30 is formed integrally with the light guide plate fixing frame 56, the spacer 3 can be formed with high precision with little man-hour.
0 and the light guide plate fixing frame 56 can be aligned.

Further, the above-described frame portion 30 of the spacer 30
FIG. 5A is a cross-sectional view schematically showing the liquid crystal panel 14, the spacer 30, and the backlight unit 40, as shown in FIG.
A frame portion 30a is formed at a position corresponding to 0. As described above, since the frame portion 30 a of the spacer 30 located between the liquid crystal panel 14 and the backlight unit 40 is formed at a position corresponding to the peripheral circuit region 170 located around the display region 130, Light unit 40
Light and heat that reach the peripheral circuit region 170 can be blocked by the frame portion 30a. As described above, since the peripheral circuit region 170 of the present embodiment is formed in the polysilicon layer formed on the substrate 16, the peripheral circuit region 170 is less affected by light and heat than that formed on the silicon substrate. Easy,
These tend to cause a leak current and the like. However, since the frame 30a of the spacer 30 is formed so as to shield light and heat from the backlight unit 40 to the peripheral circuit region 170 as described above, the light and heat reach the peripheral circuit region 170. It is possible to reduce the possibility that a leak current occurs.

The light guide plate fixing frame 56 has a bottom portion 57,
The backlight unit 40 is fixed from the back side. As described above, the spacer 30 and the light guide plate fixing frame 56 are integrally formed with one side common. Further, as shown in FIG. 2, the light guide plate fixing frame 56 includes a plurality of positioning portions 58 erected from the bottom surface portion 57 as third positioning portions. The plurality of positioning portions 58 have a shape corresponding to the shape of the corresponding end surface of the backlight unit 40 and are formed so as to abut on the end surfaces 47 and 46 of the light guide plate 44, so that the light guide plate 44 is placed on the bottom surface. It is positioned at a predetermined position in a plane substantially parallel to the portion 57. Therefore,
The light guide plate 44 and the light guide plate fixing frame 56 can be positioned with high accuracy with a short man-hour. The light guide plate 44 and the light guide plate fixing frame 56
Positioning can be performed without using a double-sided tape, etc., so that the frame area which cannot be used as a light emitting surface for sticking of the double-sided tape, etc. There is no increase in thickness.

The plurality of positioning portions 58 are provided on the light guide plate 4.
Of the end faces 4 where the fluorescent tube 50 is not disposed
7 and 46 are formed in a planar shape that covers almost in close contact with each other. In addition, since the side of the positioning portion 58 facing the light guide plate 44 is formed with a sufficient light reflectance, the use efficiency of the light from the fluorescent tube 50 can be improved by the positioning portion 58. .

As is apparent from FIG. 2, the area surrounded by the four sides of the light guide plate fixing frame 56 is
Are formed smaller than the area surrounded by the four sides.
This is because the spacer 30 needs to have a planar shape corresponding to at least the entire area of the liquid crystal panel 14 in order to hold and fix the liquid crystal panel 14, and the light guide plate fixing frame 56 has a planar shape corresponding to the display area of the liquid crystal panel 14. This is because it is only necessary to have a planar shape corresponding to the light guide plate 44 having the shape. As a result, the light guide plate fixing frame 56 is smaller in size than the case where the light guide plate fixing frame 56 has substantially the same planar shape as the spacer 30, so that the liquid crystal display device 10 is smaller and lighter than the display area. can do.

As described above, in the liquid crystal display device 10 as the display device of the present embodiment, the panel fixing frame 12
And the spacer 30, the spacer 30 and the light guide plate fixing frame 56, and the light guide plate fixing frame 56 and the reflector 66 are integrally formed with one side common. Then, the liquid crystal panel 14 is positioned between the panel fixing frame 12 and the spacer 30, and the light guide plate 44 is positioned between the spacer 30 and the light guide plate fixing frame 56 without using a double-sided tape or the like. It can be fixed and formed.
Therefore, unlike the case of using a double-sided tape or the like, there is no need to perform delicate alignment, and a display device can be manufactured by performing alignment with high accuracy with a short man-hour. Also,
Unlike a case where a double-sided tape or the like is used for fixing each part, an area using the double-sided tape or the like does not become an area that cannot be used for display, so that the frame area of the display device can be reduced. Furthermore, since a double-sided tape or the like is not used, the display device can be reduced in size and weight without increasing the thickness and weight of the display device by the amount of the double-sided tape and the like. Then, as in the case of using a double-sided tape or the like, the adhesive strength is not reduced due to use in a high-temperature and high-humidity environment or a low-temperature environment or changes over time, and peeling does not occur. As a result, there is no possibility that a position shift occurs between the display panel 14 and the spacer 30, the backlight unit 40, or the like, so that a part of the display area is not visible, and the liquid crystal display has high reliability. Apparatus 1
0 is obtained.

1.2 Display Panel FIG. 6 shows a liquid crystal panel 1 as a display panel of the present embodiment.
FIG. 4 is a plan view of FIG. FIG. 7 is a partial cross-sectional view showing details in the vicinity of the end of the liquid crystal panel 14 (position along the line HI shown in FIG. 6).

As shown in these figures, the liquid crystal panel 14
An active matrix substrate 15 in which pixel electrodes 17 made of an ITO (Indium Tin Oxide) film are formed in a matrix on the surface of a substrate 16 made of quartz glass or heat-resistant glass, and also made of quartz glass or heat-resistant glass It comprises a counter substrate 24 having a counter electrode 26 formed on the surface of the formed substrate 25 and a liquid crystal 86 sealed and sandwiched between these substrates. here,
In the active matrix substrate 15, a light-shielding film 19 is formed in advance on the surface of the substrate 16 below a region where a TFT 18 for pixel switching is formed. And
After the protective film 20 is formed on the surface, the TFT 18 and the pixel electrode 17 are formed, and the surfaces of the TFT 18 and the pixel electrode 17 are aligned.
It is a configuration covered with. This liquid crystal panel 1
In the case where color display is performed using the pixel 4, a color filter is formed in a region of the counter substrate 24 facing each pixel.

The active matrix substrate 15 and the opposing substrate 24 are maintained at a predetermined distance by a gap material (not shown) dispersedly arranged therebetween, and a sealing material disposed along the outer peripheral edge of the opposing substrate 24. 76. In this way, the liquid crystal 86 as the electro-optical material is sealed in the area defined by the active matrix substrate 15, the counter substrate 24, and the seal member 76. Here, as shown in FIG.
Reference numeral 6 denotes a liquid crystal injection port 80 which is partially interrupted. For this reason, after the opposing substrate 24 and the active matrix substrate 15 are bonded to each other, the inside area of the seal member 76 is set in a reduced pressure state, whereby the liquid crystal 86 can be injected under reduced pressure from the liquid crystal injection port 80. After the liquid crystal 86 is injected, the liquid crystal injection port 80 is sealed by the sealing portion 22 made of resin.

In the active matrix substrate 15, a region located around the display region is a peripheral circuit region. In this region, a driving circuit TFT (not shown) formed simultaneously with the pixel switching TFT 18 is provided. Scanning line driving circuit 171 and data line driving circuit 1
74 are formed. In addition, the input / output terminals 81 formed at the ends of the active matrix substrate 15 are located in regions protruding from the counter substrate 24.

The opposing substrate 24 has a light-shielding film 27 that shields a region inside the formation region of the sealing material 76 but is not a display region, and a region corresponding to the boundary region between the pixel electrodes 17 of the active matrix substrate 15. Light shielding film 28
Are formed. Then, these light shielding films 27, 28
A counter electrode 26 is formed on the surface side of the substrate, and an alignment film 29 is formed to cover the counter electrode 26.

The liquid crystal panel 14 is formed on the light-incident side and the light-exiting side of the active matrix substrate 15 and the counter substrate 24 by using a plastic sheet according to the normally white mode / normally black mode. Polarizing plates (polarizing sheets) 84 and 85 are arranged in a predetermined direction.

In the present embodiment, light is incident from the active matrix substrate 15 and is emitted from the counter substrate 24. On the contrary, light is incident from the counter substrate 24. May be incident and emitted from the active matrix substrate 15.

In the liquid crystal panel 14 configured as described above, on the active matrix substrate 15, the image signal applied to the pixel electrode 17 via the data line (not shown) and the TFT 18 causes the pixel electrode 17 and the counter electrode 26 to be connected to each other. During this period, the alignment state of the liquid crystal 86 is controlled for each pixel, and a predetermined image corresponding to the image signal is displayed. For example, when the liquid crystal panel 14 is configured in the TN mode, when the rubbing process is performed on the alignment films 21 and 29 formed between the pair of substrates (the active matrix substrate 15 and the counter substrate 24), the rubbing direction is changed. If the directions are set to be orthogonal to each other, the liquid crystal 86 is twisted and oriented at an angle of 90 ° between the substrates. Such a twist alignment causes the liquid crystal 8 between the substrates.
6 is released by applying an electric field. Therefore, depending on whether an external electric field is applied between the substrates,
The alignment state of the liquid crystal 86 can be controlled for each region (pixel) where the pixel electrode 17 is formed. Therefore, in the case of the transmissive liquid crystal panel 14, the light from the light source, that is, the light from the backlight unit 40 is adjusted to a predetermined linearly polarized light by the polarizing plate 84 on the incident side, and then is incident on the layer of the liquid crystal 86, so that a certain region is formed. The linearly polarized light that passes through is output while being rotated and the polarization plane is twisted, while the linearly polarized light that has passed through other regions is emitted without being rotated and the polarization plane is not twisted. Therefore, if the polarization plate 84 on the incident side and the polarization plate 85 on the emission side are arranged so that their transmission axes are orthogonal (normally white), the polarization plate 85 arranged on the emission side of the liquid crystal panel 14 can be obtained. Passes only linearly polarized light whose polarization plane is twisted by the liquid crystal 86. On the other hand, if the emission-side polarizing plate 85 is arranged so that the transmission axis is parallel to the incident-side polarization plate 84 (normally black), the polarizing plate arranged on the emission side of the liquid crystal panel 14 is provided. 85
Pass only linearly polarized light whose polarization plane is not twisted by the liquid crystal 86. Therefore, the liquid crystal 86
By controlling the alignment state of each pixel, arbitrary information can be displayed.

Therefore, the active matrix substrate 1
5. TFT for data line and pixel switching
It is necessary to supply an image signal to the pixel electrode 17 via 18 and to apply a predetermined potential to the counter electrode 26. Therefore, in the liquid crystal panel 14, a portion of the surface of the active matrix substrate 15 facing each corner of the counter substrate 24 is formed of an aluminum film (light-shielding material) using a process of forming data lines or the like. A first conduction electrode 78 for conduction is formed. On the other hand, at each corner of the counter substrate 24, a second conductive electrode 79 for vertical conduction made of an ITO film (light transmitting material) is formed with the help of the process of forming the counter electrode 26. Further, the first conductive electrode 78 and the second conductive electrode 7 for vertical conduction are used.
9 is electrically conducted by a conducting material 77 in which conductive particles such as silver powder and gold-plated fiber are mixed with an epoxy resin adhesive component. Therefore, the liquid crystal panel 14
Now, the active matrix substrate 15 and the counter substrate 2
4, it is possible to input a predetermined signal to both the active matrix substrate 15 and the opposing substrate 24 only by connecting the flexible wiring substrate 82 to only the active matrix substrate 15 without connecting a flexible wiring substrate or the like to each of them. it can.

FIG. 8 is a block diagram schematically showing an electrical configuration of the liquid crystal panel 14 having the above-described structure. As shown in this figure, the liquid crystal panel 14 is provided with a display area 130 and a peripheral circuit area 170.

In the display area 130, the data line 131 and the scanning line 132, and the data line 131 and the scanning line 132
And a liquid crystal cell 135 to which an image signal is input from the data line 131 via the TFT 18. Further, each pixel formed including the TFT 18 and the liquid crystal cell 135 includes a capacitor 136 between the capacitor line 133 and the capacitor 136.
36 has a function of improving the charge retention characteristics of the liquid crystal cell 135.

The peripheral circuit area 170 includes the scanning line driving circuit 1
71 and a data line drive circuit 174. The scanning line driving circuit 171 is connected to the scanning line 132 and includes a shift register 172 and a level shifter 173. The data line driving circuit 174 is connected to the data line 131, and includes a shift register 175, a level shifter 17
6, a video line 177, and a switch 178.

1.3 Electronic Equipment Equipped with Display Device FIGS. 9A, 9B, and 9C show electronic equipment using the liquid crystal display device 10 as the display device of the present embodiment as a display unit. It is an external view showing an example. FIG. 9A shows a mobile phone 88 having a liquid crystal display device 10 at the upper front side thereof. FIG. 9B shows a wristwatch 92, in which a display unit using the liquid crystal display device 10 is provided at the center of the front of the main body. FIG. 9C illustrates a portable information device 96 including a display unit including the liquid crystal display device 10 and an input unit 98. These electronic devices include various circuits such as a display information output source, a display information processing circuit, a clock generation circuit, and a power supply circuit for supplying power to those circuits, which are not shown, in addition to the liquid crystal display device 10. And a display signal generator. For example, in the case of a portable information device, a display image is formed by supplying a display signal generated by a display signal generation unit based on information input from the input unit 98 to the display unit.

The electronic devices into which the liquid crystal display device 10 of the present embodiment is incorporated are not limited to portable telephones, wristwatches, and portable information devices, but also notebook computers, electronic notebooks, pagers, calculators, POS terminals, IC cards And various electronic devices such as a mini-disc player.

2. Second Embodiment In the first embodiment, an example has been described in which substantially the entire frame portion of the spacer is in contact with the liquid crystal panel 14. In this embodiment,
The first embodiment differs from the first embodiment in that the spacer has a wall portion, and the wall portion keeps a space between the frame portion and the display panel, and also prevents light leakage from the backlight unit to the peripheral circuit region to reduce heat transfer. Is different. Otherwise, the configuration is the same as in the first embodiment, and a description thereof will be omitted. Further, in the drawings, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

2.1 Spacer FIG. 10 is a perspective view of only the spacer 180 of this embodiment viewed from the front side, that is, the side facing the liquid crystal panel 14 for convenience. FIG. 11 is a schematic exploded sectional view showing the liquid crystal panel 14, the spacer 180, and the backlight unit 40. In these figures, the protrusion 30b and the positioning part 30d are not shown.

As shown in these figures, the spacer 180
Includes a wall portion 181 having a uniform height continuously formed in a wall shape along the inner edge of the frame portion 31a, and a plurality of convex portions 183 formed at the same height as the wall portion 181 on the frame portion 31a. ing.
As shown in FIG. 11, the area surrounded by the wall 181, that is, the opening area 182 of the spacer is
4 corresponds to the display area 130. Spacer 180
Are arranged such that the wall portion 181 and the convex portion 183 abut on the liquid crystal panel 14 in this positional relationship. by this,
The space between the frame 30a and the display panel 14 is kept at the height of the wall 181. Moreover, since the wall portion 181 is formed in a continuous wall shape surrounding the opening region 182 of the spacer,
Light leakage from the backlight unit 40 to the peripheral circuit area 170 of the liquid crystal panel 14 can be prevented, and heat transfer can be reduced.

In this embodiment, the liquid crystal panel 1 is formed by the walls 181 and 183 provided on the spacer 180.
The distance between the backlight unit 4 and the backlight unit 40 is
Since the liquid crystal panel 14 spreads by the height of 81, the influence of the heat of the backlight unit 40 on the liquid crystal panel 14 can be further reduced. Further, the heights of the wall portions 181 and 183 are appropriately set according to the occurrence of moiré and interference fringes, and the liquid crystal panel 14 and the backlight unit 40 are set.
It is possible to prevent the occurrence of moiré and interference fringes by optimizing the gap between them. Moreover, the wall portion 181 is formed as a continuous wall surrounding the opening region 182 of the spacer 180 so as to prevent light leakage from the backlight unit 40 to the peripheral circuit region 170 and reduce heat transfer. In addition, it is possible to prevent the light and heat from the backlight unit 40 from affecting the liquid crystal panel 14, especially the peripheral circuit region 170. Further, when an elastic member is used for the wall portion 181, impact from the outside of the liquid crystal panel and the backlight unit can be absorbed, so that reliability can be improved.

2.2 Modification of Second Embodiment The wall of the spacer 180 is not only formed from the inner periphery of the frame 31a, but also, for example, the liquid crystal panel 14, the spacer 180, and the backlight unit 40. As shown in FIG. 12 which is an exploded cross-sectional view, a wall portion 185 may be formed by using a resin material or the like so that the entire frame portion 31a increases in thickness. That is, the wall portion 185 may be formed to have a planar shape corresponding to the peripheral circuit region 170 of the liquid crystal panel 14. This also allows the liquid crystal panel 1
The distance between the backlight unit 4 and the backlight unit 40 is
Since the backlight unit 40 spreads by the height of 85, the influence of the heat of the backlight unit 40 on the liquid crystal panel 14 can be reduced. Further, since the wall portion 185 prevents light leakage from the backlight unit 40 to the peripheral circuit region 170 and reduces heat transmission, it is possible to prevent the light and heat from the backlight unit 40 from affecting the liquid crystal panel 14. it can.

3. <Other Modifications> Modifications applicable to the above-described embodiments will be described. In each of the following modifications, only points different from the above-described embodiments will be described and described.

3.1 In each of the embodiments described above,
An example is shown in which the reflector 66 and the light guide plate fixing frame 56 are integrally formed with one side common. However, FIG.
The reflector may be formed separately from the light guide plate fixing frame 56 as shown in a perspective view in FIG. 13A and a developed view in FIG. In this case, the reflector 72
The light guide plate 44 is fixed to the light guide plate 44 and the light guide plate fixing frame 56 such that the front and rear surfaces thereof partially overlap. After the fluorescent tubes 50 are housed in the reflector 66, the bent portions 69 are bent toward the holding portions 52 of the fluorescent tubes 50. Furthermore, the bent portion 73 can prevent a deviation between the reflector 72 and the light guide plate 44 by being in contact with the side surface of the light guide plate 44. Further, the fluorescent tube 50 as a light source unit can be fixed at a predetermined position by the bent portion 68.

3.2 In each of the above embodiments,
Panel fixing frame 12, spacer 30, light guide plate fixing frame 56,
Although the example in which the reflector 66 is formed of a metal has been described, these may be formed of a resin, for example, an acrylic resin, a polypropylene, or a vinyl chloride resin.

As described above, since the panel fixing frame 12, the spacer 30, the light guide plate fixing frame 56, and the reflector 66 are made of resin, heat conduction through them is small, and they are electrically insulated. A display device can be formed. Further, leak current from the circuit portion or the like rarely flows out to the panel fixing frame 12, the spacer 30, the light guide plate fixing frame 56, or the reflector 66.

3.3 In the above, the panel fixing frame 1
In each pair of the spacer 2 and the spacer 30, and the spacer 30 and the light guide plate fixing frame 56, by forming a cut portion in advance on a boundary of a common side, the integrally formed frame members are separated by the boundary. It was formed by bending easily. However, instead of providing the notch, a bending press is performed in advance at each boundary line at an angle larger than a predetermined angle to form a bent portion, and the liquid crystal panel 14 and the backlight unit 40 are sandwiched. After that, it may be bent to a predetermined angle. In this manner, by forming the bent portion in advance, the panel fixing frame 12 and the spacer 30 and the pair of the spacer 30 and the light guide plate fixing frame 56 can be easily bent at that position, and have a predetermined positional relationship. It can be.

3.4 Further, in each of the above-described embodiments, an example in which a fluorescent tube such as a cold cathode lamp is used as the light source unit has been described.
D) may be used.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments.
Various modifications can be made within the scope of the present invention or within the equivalent scope of the claims.

[Brief description of the drawings]

FIG. 1 is a schematic exploded perspective view showing a liquid crystal display device according to a first embodiment.

FIG. 2 shows a frame member shown in FIG. 1, that is, a panel fixing frame;
It is a perspective view which expands and shows a spacer, a light guide plate fixing frame, and a reflector.

FIG. 3 is a cross-sectional view showing the vicinity of a boundary of one side common to a panel fixing frame and a spacer as a state before bending.

FIG. 4 is a perspective view of the panel fixing frame and the spacer as viewed from the direction of arrow A shown in FIG.

FIG. 5 is a cross-sectional view schematically illustrating a positional relationship among a liquid crystal panel, a spacer, and a backlight unit.

FIG. 6 is a plan view showing the liquid crystal panel of the first embodiment.

FIG. 7 is a partial cross-sectional view taken along a line HI shown in FIG.

FIG. 8 is a block diagram illustrating an electrical configuration of the liquid crystal panel according to the first embodiment.

FIGS. 9A and 9B are external views illustrating an electronic device using the liquid crystal display device according to the first embodiment; FIG.
(B) is a wristwatch, and (C) is a portable information device.

FIG. 10 is a perspective view of only the spacer of the second embodiment as viewed from the front side, that is, the side facing the liquid crystal panel.

FIG. 11 is a schematic exploded cross-sectional view showing a positional relationship between a liquid crystal panel, a spacer, and a backlight unit in a second embodiment.

FIG. 12 is a schematic exploded sectional view showing a positional relationship among a liquid crystal panel, a spacer, and a backlight unit in a modification of the second embodiment.

13A and 13B are views showing a modification in which the reflector is formed as a separate body, wherein FIG. 13A is a perspective view and FIG. 13B is a developed view.

[Explanation of symbols]

 Reference Signs List 10 liquid crystal display device 12 panel fixing frame 12a frame portion (first frame portion) 14 liquid crystal panel 30, 180 spacer 30a frame portion (second frame portion) 30b projecting portion (second projecting portion) 30d positioning portion (second positioning portion) ) 38 notch section 40 backlight unit 44 light guide plate 45, 46, 47 end face 50 fluorescent tube (light source section) 56 light guide plate fixing frame 57 bottom section 58 positioning section (third positioning section) 60 inverter (power supply) 66 reflector 67 shielding Part 68 Fixed part 88 Mobile phone (electronic device) 92 Watch (electronic device) 96 Portable information device (electronic device) 130 Display area 170 Peripheral circuit area 181, 185 Wall part

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2H089 HA40 QA03 QA06 QA10 QA11 QA16 RA05 SA07 TA09 TA12 TA13 TA15 TA18 2H091 FA02Y FA08X FA14Z FA23Z FA32Z FA34Z FA35Y FA42Z FA45Z FB08 FD12 FD15 GA13 LA04 LA18 LA04 BB12 EE05 EE13 EE27 FF03 FF08 GG24 GG43 KK03 LL07 LL08

Claims (18)

[Claims] A light guide plate having a plate shape; a light source unit disposed along one end surface of the light guide plate; and a light source unit substantially wrapped around the light source unit except for the light guide plate.
A reflector that reflects light from the light source unit toward the light guide plate, wherein the light source unit is longer than a length of the one end surface of the light guide plate, and the reflector is such that the light source unit protrudes from the light guide plate. A surface light source unit comprising a shielding part for covering a part. 2. The surface light source unit according to claim 1, wherein the reflector includes a fixing unit that fixes the light source unit so as not to move in a length direction. 3. The light guide plate fixing frame according to claim 1, further comprising a light guide plate fixing frame having a bottom surface portion and fixing the light guide plate from the rear side. A surface light source unit comprising: a plurality of third positioning portions that stand upright along another end surface of the light plate and position the light guide plate at a predetermined position. 4. The surface light source unit according to claim 3, wherein the plurality of third positioning portions are formed in a planar shape covering another end surface of the light guide plate. 5. The surface light source unit according to claim 3, wherein the light guide plate fixing frame and the reflector are integrally formed in a predetermined shape. 6. A display device, comprising: the surface light source unit according to claim 1; and a display panel arranged on a front side of the surface light source unit. 7. A surface light source unit according to claim 3, further comprising: a display panel disposed on a front side of the surface light source unit; and a second frame portion, wherein the display panel is a rear surface. Fixed from the side,
And a spacer for fixing the surface light source unit from the front side, wherein the light guide plate fixing frame and the spacer are integrally formed with a common side. 8. The one side common to the light guide plate fixing frame and the spacer according to claim 7,
A display device, wherein a notch is formed at a boundary between the light guide plate fixing frame and the spacer. 9. The display device according to claim 7, wherein the spacer has a second protrusion protruding from the second frame toward the surface light source unit. 10. The display device according to claim 7, wherein the spacer is erected from the second frame portion and abuts on an end face of the display panel to attach the display panel to the second frame portion. A display device having a plurality of second positioning portions for positioning at predetermined positions in a plane substantially parallel to the display device. 11. The display device according to claim 7, wherein the light guide plate fixing frame and the spacer are formed of metal. 12. The display device according to claim 11, wherein either the light guide plate fixing frame or the spacer is grounded at at least one point. 13. The display device according to claim 7, wherein the light guide plate fixing frame and the spacer are formed of resin. 14. The display panel according to claim 7, further comprising: a display area; and a peripheral circuit area formed around the display area, wherein the second frame of the spacer is provided. The display device, wherein the unit is formed at a position corresponding to the peripheral circuit region. 15. The spacer according to claim 14, wherein the spacer keeps an interval between the second frame portion and the display panel, and prevents a light leak from the surface light source unit to the peripheral circuit region. A display device characterized by the above-mentioned. 16. The display device according to claim 7, wherein an area surrounded by four sides of the light guide plate fixing frame is smaller than an area surrounded by four sides of the spacer. 17. The device according to claim 7, further comprising a first frame portion, a panel fixing frame for fixing the display panel from the front side, wherein the panel fixing frame and the spacer are on one side. A display device, wherein the display device is formed integrally with the same. 18. An electronic apparatus comprising the display device according to claim 6 as display means.