CN204116762U - Display device - Google Patents

Abstract

A display device comprises a display panel, a backlight module and a back frame piece. The backlight module is arranged opposite to the display panel and is provided with a light guide plate and a reflector plate, the light guide plate is provided with a bottom surface, and the reflector plate is arranged on the bottom surface. The back frame part is provided with a bearing part for bearing the light guide plate, wherein the bearing part is positioned at the edge of the bottom surface of the light guide plate and is overlapped with the bottom surface along the direction vertical to the bottom surface, and the reflector plate and the bearing part are arranged side by side along the direction parallel to the bottom surface and are respectively connected with the bottom surface of the light guide plate. Set up in the bottom surface edge of light guide plate and overlap the configuration with the direction of perpendicular bottom surface along the bottom surface through the carrier to and make reflector plate and carrier dispose side by side along the direction of parallel bottom surface, and the design of being connected with the bottom surface of light guide plate respectively, make the utility model discloses compare in prior art and choose for use slim optics diaphragm or light guide plate, or cancel the design of back lid, not only have frivolous characteristics, make display device can accord with sufficient mechanical strength requirement moreover.

Description

display device

technical field

The utility model relates to a display device, in particular to a light and thin display device.

Background technique

With the advancement of science and technology, flat panel display devices have been widely used in various fields. Due to their superior characteristics such as light and thin body, low power consumption and no radiation, they have gradually replaced traditional cathode ray tube display devices and have been applied to many types. Electronic products such as mobile phones, portable multimedia devices, notebook computers, tablet computers and other displays.

In the design of display devices, apart from cost reduction, thinning and meeting the requirements of mechanical strength are another important goal pursued by display device manufacturers. In order to meet the requirements of lightness and thinning, one method in the prior art is to thin each part of the display device, such as selecting a thinner optical film or light guide plate, etc. However, this thinning method is easy to make the optical film Or the light guide plate produces waving, which makes the optical quality poor. Another approach is to cancel the back cover and directly replace the function of the back cover with a plastic frame. However, this method also has doubts about insufficient mechanical strength, and because there is no back cover, it cannot effectively carry the light guide plate, and its optical quality is likely to be poor.

Therefore, how to produce a display device with a thin and light appearance and meet the structural strength requirements under limited cost control has become a challenging topic for various companies.

Utility model content

The purpose of the utility model is to provide a display device, so that the display device can meet the requirements of lightness and mechanical strength at the same time.

The technical solution of the utility model is to provide a display device, which includes a display panel, a backlight module and a back frame. The backlight module is arranged opposite to the display panel, and has a light guide plate and a reflection sheet. The light guide plate has a bottom surface, and the reflection sheet is arranged on the bottom surface. The back frame has a bearing part to carry the light guide plate, wherein the bearing part is located at the edge of the bottom surface of the light guide plate and is arranged to overlap with the bottom surface along a direction perpendicular to the bottom surface, and the reflective sheet and the bearing part are arranged side by side along a direction parallel to the bottom surface, and respectively Connect with the bottom surface of the light guide plate.

In one embodiment, the light guide plate further has a light-emitting surface, the light-emitting surface is opposite to the bottom surface and adjacent to the display panel.

In one embodiment, the cross-sectional shape of the back frame along a direction vertical to the bottom surface is L-shaped or ㄈ-shaped.

In one embodiment, the display device further includes a first adhesive member, and the reflective sheet and the carrying portion are connected to the bottom surface through the first adhesive member.

In one embodiment, the display device further includes a second adhesive member, the back frame further has an upright portion connected to the carrying portion, and the second adhesive member is located between the upright portion and the display panel.

In one embodiment, the display device further includes a plastic frame disposed between the back frame and the light guide plate, the plastic frame has a protruding portion, and two opposite sides of the protruding portion are respectively connected to the display panel and the backlight module.

In one embodiment, the backlight module further has a light emitting unit, the light emitting unit has at least one light emitting element and a circuit substrate, the light emitting element is disposed on the circuit substrate and adjacent to a light incident surface of the light guide plate.

In one embodiment, the back frame further has a top and an upright portion, the upright portion is respectively connected to the top and the carrying portion, and the circuit board is located between the top and the light guide plate.

In one embodiment, the display device further includes a spacer, the display panel has a first substrate, and the spacer is disposed between the top and the first substrate.

In one embodiment, the display device further includes a light-shielding element extending from the edge of the display panel to the back frame and the reflection sheet.

Based on the above, in the display device of the present invention, the bearing part is arranged on the edge of the bottom surface of the light guide plate and overlapped with the bottom surface in a direction perpendicular to the bottom surface, and the reflective sheet and the bearing part are arranged side by side in a direction parallel to the bottom surface, And the design of connecting with the bottom surface of the light guide plate respectively makes the display device of the present invention choose a thin optical film or light guide plate, or cancel the design of the back cover compared with the prior art, not only has the characteristics of light and thin, but also makes Display devices may comply with adequate mechanical strength requirements.

Description of drawings

FIG. 1 is a schematic perspective view of a display device according to a preferred embodiment of the present invention.

2A to 2C are three-dimensional schematic diagrams of display devices in different embodiments of the present invention.

Detailed ways

A display device according to a preferred embodiment of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same reference numerals.

Please refer to FIG. 1 , which is a three-dimensional schematic view of a display device 1 according to a preferred embodiment of the present invention. The display device 1 of this embodiment is a liquid crystal display device, and is applied to, for example but not limited to, display screens of notebook computers (including ultra-thin notebook computers), LCD TVs, mobile phones, satellite navigation (GPS) or other electronic devices. Wherein, the perspective view shown in FIG. 1 can be applied to the four sides of the display screen except the side where the light emitting unit (for example, LED light bar) is provided.

The display device 1 includes a display panel 11 , a backlight module 12 and a back frame 13 .

The display panel 11 has a first substrate 111 , a second substrate 112 and two optical films 113 , 114 . Wherein, the first substrate 111 is opposite to the second substrate 112 . The first substrate 111 or the second substrate 112 can be made of a light-transmitting material, such as glass, quartz or the like, plastic, rubber, glass fiber or other polymer materials; or, the first substrate 111 or the second substrate The second substrate 112 can also be made of opaque material, such as a metal-glass fiber composite board, a metal-ceramic composite board, or a printed circuit board, or other materials. In this embodiment, the first substrate 111 and the second substrate 112 can be a glass substrate or a high-hardness PMMA substrate respectively, so that the display panel 11 can be light and thin. In addition, the first substrate 111 of this embodiment is a thin film transistor substrate, and the second substrate 112 is a color filter substrate, however, in other implementations, the black matrix (black matrix) on the color filter substrate The filter layer and the light filter layer can also be respectively disposed on the thin film transistor substrate, so that the first substrate 111 becomes a BOA (BM on array) substrate, or a COA (color filter on array) substrate, which are not limited here. In this embodiment, the optical film 113 is a lower polarizer, and the optical film 114 is an upper polarizer. Wherein, the optical film 113 (lower polarizer) is disposed on the side of the first substrate 111 away from the second substrate 112 , and the optical film 114 (upper polarizer) is disposed on the side of the second substrate 112 away from the first substrate 111 . Here, the optical film 113 is located on the lower surface of the first substrate 111 , and the optical film 114 is located on the upper surface of the second substrate 112 . In addition, the display panel 11 may further have a liquid crystal layer (not shown in the figure), and the liquid crystal layer is sandwiched between the first substrate 111 and the second substrate 112 .

The backlight module 12 is opposite to the display panel 11 . The backlight module 12 can emit light to enter the display panel 11 so that the display panel 11 can display images. In this embodiment, the backlight module 12 has a light guide plate 121 and a reflective sheet 122 , the light guide plate 121 has a bottom surface B and a light output surface O, and the light output surface O is opposite to the bottom surface B and faces the display panel 11 . The reflection sheet 122 is disposed on the bottom surface B to reflect the light emitted from the bottom surface B into the light guide plate 121 again. In addition, the backlight module 12 of this embodiment further includes a plurality of optical films 123 , 124 , 125 . The optical films 123 , 124 , 125 are, for example but not limited to, light collecting sheets or diffusing sheets. Those who are familiar with the present invention can understand the functions of all components of the backlight module 12 , so the present invention will not repeat them.

The back frame member 13 has a bearing portion 131 and an upright portion 132 , and the bearing portion 131 is connected to the upright portion 132 . Wherein, the carrying portion 131 is disposed on the edge of the bottom surface B of the light guide plate 121 and overlapped with the bottom surface B along a direction perpendicular to the bottom surface B. Referring to FIG. In this embodiment, the carrying portion 131 partially overlaps the bottom surface B along a first direction Z (that is, a direction perpendicular to the bottom surface B) to carry the light guide plate 121, and the light guide plate 121 is carried by the carrying portion 131, so that the display device 1 Has high mechanical strength. As shown in FIG. 1 , the carrying portion 131 and the bottom surface B have an overlapping width W at a certain distance. In addition, the thickness of the back frame member 13 can be between 0.15 mm and 0.3 mm for accommodating the display panel 11 and the backlight module 12 . The material of the back frame 13 can be selected from metal or alloy, etc. Here, the back frame 13 is an example of iron, and its thickness is about the same as that of the reflector 122, and is used to provide protection against collisions, electromagnetic waves or electric shocks, and also to make the display The device 1 has better mechanical strength.

The carrying portion 131 of this embodiment is not a whole-surface member, but has perforations. The positions of the perforations are used to set the reflective sheet 122, and make the reflective sheet 122 and the carrying portion 131 along a second direction X (that is, parallel The direction of the bottom surface B) is arranged side by side, and the reflection sheet 122 and the carrying portion 131 are respectively connected to the bottom surface B. In other words, the back frame member 13 of this embodiment does not directly carry the reflective sheet 122, and the supporting portion 131 does not overlap with the reflective sheet 122 in the first direction Z. Therefore, compared with the prior art, the reflective sheet is directly placed The design (thicker) arranged on the back cover, the utility model has the characteristics of lightness and thinness. In addition, the cross-sectional shape of the back frame member 13 along a vertical bottom surface B can be L-shaped or ㄈ-shaped. Here, the cross-section of the back frame member 13 viewed from the third direction Y is a mirrored L-shape. In addition, the above-mentioned first direction Z, second direction X and third direction Y are substantially perpendicular to each other.

The display device 1 of this embodiment may further include a first adhesive member 14 , and the reflective sheet 122 and the carrying portion 131 are connected to the bottom surface B through the first adhesive member 14 . The first adhesive member 14 is preferably a white double-sided adhesive tape. In addition to fixing the relative positions of the reflective sheet 122, the carrying portion 131 and the light guide plate 121, it can also reflect the light that passes through the bottom surface B back to the surface. The light guide plate 121 improves the utilization rate of light. In addition, the display device 1 of this embodiment may further include a second adhesive member 16 disposed between the upstanding portion 132 and the display panel 11 . Here, the second adhesive member 16 is an insulating tape (can be a single-sided tape or a double-sided tape), which is used to fix the upright portion 132 and the display panel 11 and insulate the back frame 13 from the display panel 11 .

In addition, the display device 1 of this embodiment may further include a spacer 15, which is a buffer material and may be elastic. The spacer 15 is disposed between the first substrate 111 and the optical film 125 , and is arranged side by side with the optical film 113 along the second direction X. In addition, the display device 1 of this embodiment may further include a light-shielding element 19, such as but not limited to a black light-shielding tape, and extends from the edge of the display panel 11 to the back frame 13 and the reflective sheet 122 for The light diffused from the side of the display device 1 is blocked, and has a fixed effect, so as to further enhance the strength of the module. Here, the light-shielding element 19 extends from the edge of the second substrate 112 to cover the upstanding portion 132 , the supporting portion 131 and the partial reflection sheet 122 of the back frame member 13 in a sticking manner. It should be mentioned again that if a white high-reflectivity material (such as white paint) is coated on the carrying portion 131, the first adhesive member 14 may not be used, and the reflective sheet 122 and the carrying portion 131 may be fixed with the light-shielding element 19. its relative position. In addition, the display device 1 of this embodiment does not use a plastic frame, so in addition to being lighter and thinner, it can also achieve the design purpose of a narrow frame.

In addition, please refer to FIG. 2A to FIG. 2C , which are three-dimensional schematic diagrams of display devices 1 a , 1 b , and 1 c in different embodiments of the present invention. Wherein, the three-dimensional schematic diagram shown in FIG. 2A and FIG. 2B can also be applied to any side of the side of the display screen except the side where the light source (for example, LED light bar) is placed, and the three-dimensional schematic diagram shown in FIG. 2C is applied to The display screen has one side of the light source, and FIG. 2C does not show the second substrate 112 and the optical film 114 .

As shown in Figure 2A, the main difference between display device 1a and display device 1 is that display device 1a does not include spacer 15 and second adhesive member 16, but display device 1a includes a plastic frame (housing) 17, plastic frame 17 Set on the back frame member 13. Wherein, the plastic frame 17 is used for carrying the display panel 11 , so that the display panel 11 and the backlight module 12 can be disposed opposite to each other. In this embodiment, the plastic frame 17 has a protruding portion 171 , and opposite sides of the protruding portion 171 are respectively connected to the first substrate 113 and the light guide plate 121 . In addition, the light-shielding element 19 of this embodiment extends from the edge of the second substrate 112 to cover the plastic frame 17 , the upright portion 132 of the back frame member 13 , the carrying portion 131 and the partial reflection sheet 122 .

In addition, as shown in FIG. 2B , the main difference from the display device 1 of FIG. 1 is that the display device 1b does not have the second adhesive member 16, but the rubber frame 17 is arranged on the upright portion 132 of the back frame member 13 and the display panel. Between 11. The plastic frame 17 of this embodiment does not have the protruding portion 171 shown in FIG. 2A , and can be combined with the bottom of the back frame 13 by hooks or by insert molding. In this embodiment, the role of the plastic frame 17 is to electrically isolate the display panel 11 from the metal back frame 13, and the white plastic frame 17 can have a light reflection effect, so that the light emitted to the side can be transmitted by the plastic frame 17 reflected back to the light guide plate 121.

In addition, as shown in FIG. 2C, the main difference from the display device 1 is that the display device 1c does not have the spacer 15 and the second adhesive member 16, but the backlight module 12c of the display device 1c also has a light-emitting unit 126, the light-emitting unit 126 has at least one light emitting element 1261 and a circuit substrate 1262 , the light emitting element 1261 is disposed on the circuit substrate 1262 and adjacent to a light incident surface I of the light guide plate 121 . Here, a plurality of light emitting elements 1261 are disposed on the circuit substrate 1262 . The light emitting element 1261 is, for example, a light emitting diode, and the circuit substrate 1262 is, for example but not limited to, a flexible printed circuit board (Flexible Print Circuit, FPC), and has a control element to control the light emitting of the light emitting element 1261. The backlight module 12c of this embodiment is a side-mounted backlight module, and the light emitted by the light-emitting element 1261 enters the light from the side (light-incident surface I) of the light guide plate 121 and exits from the light-emitting surface O of the light guide plate 121 . In addition, the back frame member 13c of this embodiment can also have a top 133, the upright portion 132 is respectively connected to the top 133 and the carrying portion 131, and the circuit board 1262 is arranged between the top 133 and the light guide plate 121 (commonly known as L/B reflector). Group). In addition, the circuit substrate 1262 is connected to the light emitting surface O of the light guide plate 121 through an adhesive T (such as double-sided tape), thereby fixing the position of the circuit substrate 1262 . In addition, the back frame 13 of the display device 1c is shaped like a ㄈ to hold the light guide plate 121, which can suppress the possible warping of the light guide plate 121 when it is heated, and also makes the display device 1c have higher mechanical strength.

The display device 1 c of this embodiment may further include another spacer 18 and another light shielding member 20 . The spacer 18 is disposed between the top 133 and the first substrate 111, and the light-shielding member 20 is extended from the spacer 18 to between the optical film 113 and the light guide plate 121 to block the light directed to the circuit substrate 1262 and the optical film 123. The light in the room can avoid light leakage and improve the utilization rate of light. It should be mentioned again that if a white high-reflectivity material (such as white paint) is coated on the carrier portion 131, then the first adhesive member 14 may not be used, and the reflective sheet 122 and the back frame member 13 may be formed with a light-shielding element 19 Fix its relative position. The design method of this embodiment can achieve the situation that the thickness of the ground side is reduced to almost the thickness of the sky side.

In addition, other technical features of the display devices 1a, 1b, and 1c can refer to the same elements of the display device 1, and will not be repeated here.

In summary, according to the display device of the present invention, the carrying portion is disposed on the edge of the bottom surface of the light guide plate and overlapped with the bottom surface in a direction perpendicular to the bottom surface, and the reflective sheet and the carrying portion are arranged side by side in a direction parallel to the bottom surface, And the design of connecting with the bottom surface of the light guide plate respectively makes the display device of the present invention choose a thin optical film or light guide plate, or cancel the design of the back cover compared with the prior art, not only has the characteristics of light and thin, but also makes Display devices may comply with adequate mechanical strength requirements.

The above descriptions are illustrative only, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present utility model shall be included in the claims.

Claims (10)

1. a display device, is characterized in that, described display device comprises:

One display panel;

One backlight module, is oppositely arranged with this display panel, and has a light guide plate and a reflector plate, and this light guide plate has a bottom surface, and this reflector plate is arranged at this bottom surface; And

One back of the body framework, has a supporting part and carries this light guide plate,

Wherein, this supporting part is positioned at this bottom edge of this light guide plate and overlaps with the direction of this bottom surface along this bottom surface vertical, and this reflector plate and this supporting part are along the direction of this bottom surface parallel and row arrangement, and is connected with this bottom surface of this light guide plate respectively.

2. display device as claimed in claim 1, it is characterized in that, this light guide plate also has an exiting surface, and this exiting surface is relative with this bottom surface and be close to this display panel.

3. display device as claimed in claim 1, it is characterized in that, this back of the body framework is L font or ㄈ font along the section shape in this direction, bottom surface vertical.

4. display device as claimed in claim 1, it is characterized in that, described display device also comprises:

One first sticker part, this reflector plate is connected with this bottom surface by this first sticker part with this supporting part.

5. display device as claimed in claim 4, it is characterized in that, described display device also comprises:

One second sticker part, this back of the body framework also has an erection part and connects this supporting part, and this second sticker part is between this erection part and this display panel.

6. display device as claimed in claim 1, it is characterized in that, described display device also comprises:

One glue frame, be arranged between this back of the body framework and this light guide plate, this glue frame has a teat, and the relative both sides of this teat are connected with this display panel and this backlight module respectively.

7. display device as claimed in claim 1, it is characterized in that, this backlight module also has a luminescence unit, and this luminescence unit has at least one light-emitting component and a circuit substrate, this light-emitting component is arranged at this circuit substrate, and is adjacent to an incidence surface of this light guide plate.

8. display device as claimed in claim 7, it is characterized in that, this back of the body framework also has a top and an erection part, and this erection part is connected with this top and this supporting part respectively, and this circuit substrate is between this top and this light guide plate.

9. display device as claimed in claim 8, it is characterized in that, described display device also comprises:

One distance piece, this display panel has a first substrate, and this distance piece is arranged between this top and this first substrate.

10. display device as claimed in claim 1, it is characterized in that, described display device also comprises:

One shading element, extends to this back of the body framework and this reflector plate by the edge of this display panel.