CN109254434B

CN109254434B - Display device

Info

Publication number: CN109254434B
Application number: CN201811331870.1A
Authority: CN
Inventors: 吴家豪; 郭汉斌
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2018-05-08
Filing date: 2018-11-09
Publication date: 2021-07-06
Anticipated expiration: 2038-11-09
Also published as: TW201947296A; CN109254434A; TWI666491B

Abstract

The invention provides a display device which comprises a display panel, a backlight module and a circuit unit. The display panel is provided with a back side surface; the back side has an end edge. The backlight module comprises a shell and a bracket. The shell is arranged opposite to the back side; on the projection plane parallel to the back side surface, the shell is not overlapped with the end edge, and an accommodating space is formed between the shell and the end edge. The support extends from the shell to the end edge at least partially and extends into the accommodating space. The circuit unit is provided with a first end and a second end. The first end is connected with the display panel; the second end faces the back side face due to the bending of the circuit unit. The bracket is positioned between the back side surface and the second end of the circuit unit and is connected with the second end of the supporting circuit unit.

Description

Display device

Technical Field

The present invention relates to a display device; more particularly, the present invention relates to a display device in which a circuit unit is bent to a back side of a display panel.

Background

Flat and curved display devices are widely used in various electronic devices, such as mobile phones, personal wearable devices, televisions, vehicle hosts, personal computers, digital cameras, and handheld games. However, with the increasing requirements of resolution, narrow frame, and thin display, the design of the mechanism in the display device is also examined.

Taking a liquid crystal display device as an example, in recent years, it is required to achieve an appearance effect of a narrow frame or even no frame, and therefore, adjustment is required for a conventional mechanism design. For example, a conventional lcd panel has one side connected to another substrate carrying circuit elements through a flexible circuit board for signal transmission and processing. However, under the requirement of narrow-frame or frameless appearance design, the flexible circuit board and the connected substrate need to be folded back to the rear of the backlight module at the back side of the liquid crystal display panel to be hidden. However, such an arrangement often increases the overall thickness of the module, and cannot meet the requirement of thinning.

Disclosure of Invention

One of the objectives of the present invention is to provide a display device that can meet the visual requirements of narrow frame or frameless frame.

An object of the present invention is to provide a display device capable of reducing the overall module thickness.

An object of the present invention is to provide a display device, which can make the circuit unit bent to the back side of the display panel obtain good structural support.

The display device comprises a display panel, a backlight module and a circuit unit. The display panel is provided with a back side surface; the back side has an end edge. The backlight module faces the back side. The backlight module comprises a shell and a bracket. On the projection plane parallel to the back side surface, the shell is not overlapped with the end edge, and an accommodating space is formed between the shell and the end edge. The support extends from the shell to the end edge at least partially and extends into the accommodating space.

The circuit unit is provided with a first end and a second end. The first end is connected with the display panel; the second end faces the back side face due to the bending of the circuit unit. The second end extends into the accommodating space and is connected with the bracket. The bracket is positioned between the back side surface of the display panel and the second end of the circuit unit. Through the design, at least part of the circuit units can be accommodated in the accommodating space so as to reduce the thickness of the whole module and obtain stable structural support.

Drawings

FIG. 1 is a perspective oblique view of elements of an embodiment of a display device;

FIG. 2 is a schematic cross-sectional view of the embodiment of FIG. 1 taken along line AA;

FIG. 3 is a schematic cross-sectional view of a variation of the embodiment of FIG. 2;

FIG. 4 is a schematic cross-sectional view of another embodiment of a display device;

FIG. 5 is a schematic view of the housing of the embodiment of FIG. 4;

FIG. 6 is a schematic cross-sectional view of another embodiment of a display device;

FIG. 7 is a schematic cross-sectional view of a variation of the embodiment of FIG. 6;

FIG. 8 is a schematic cross-sectional view of another embodiment of a display device;

FIG. 9 is a cross-sectional view of another embodiment of a display device.

Description of reference numerals:

10: display device

100: display panel

110: dorsal side

111: end edge

130: front side

131: circuit connection region

140: outer surface

200: projection plane

210: projection range of the housing

220: end edge projection range

300: backlight module

310: shell body

311: side wall

313: bottom surface

315: the top surface

317: upper cover plate

320: support frame

330: support frame

331: connecting end

333: base plate

335: turning plate

337: supporting plate

350: light source

370: light guide plate

400: containing space

500: circuit unit

501: first end

502: second end

510: flexible transmission line

530: circuit board

550: circuit element

700: buffer material

800: sticking cloth

Detailed Description

The invention provides a display device, such as a non-spontaneous display panel such as a liquid crystal display panel or an electrophoresis display panel; and can be applied to, for example, computer monitors, televisions, monitors, and vehicle hosts. The display device can be applied to other electronic devices, for example, as a display screen of a mobile phone, a digital camera, a hand-held game machine, or the like. However, the method is not limited thereto and may be adjusted as needed.

Fig. 1 is a perspective oblique view of an embodiment of a display device according to the present invention, and fig. 1 is an enlarged view of the pitches of a display panel 100, a backlight module 300 and a circuit unit 500 for easy understanding.

FIG. 2 is a cross-sectional view of the embodiment of FIG. 1 taken along line AA. As shown in fig. 1 and 2, the display device 10 includes a display panel 100, a backlight module 300 and a circuit unit 500. The display panel 100 is, for example, a liquid crystal display panel, and has a back side 110; the back side 110 has an end edge 111.

The backlight module 300 is disposed opposite to the back side 110 of the display panel 100, and generates light entering the display panel 100 through the back side 110. As shown in fig. 2, the backlight module 300 includes a housing 310 and a bracket 330. In this embodiment, the backlight module 300 is designed in a direct-type manner, for example, and the housing 310 is provided with a plurality of light sources 350 facing the back side 110. However, in various embodiments, the backlight module 300 may also be designed in an edge-lit manner or in other possible manners, and is not limited to the edge-lit manner. In addition, in the embodiment, the housing 310 is made of metal, for example, and a supporting frame 320 made of plastic material may be further disposed inside the housing, but not limited thereto. In various embodiments, the housing 310 may be made of plastic, or both.

As shown in fig. 1 and 2, on the projection plane 200 parallel to the back side surface 110, the housing 310 is not overlapped with the end edge 111, and an accommodating space 400 is formed between the housing 310 and the end edge 111. The projection plane 200 may be any virtual or physical plane parallel to the back side 110, and may also be an extended plane of a physical plane, for example, an extended plane of the front side 130 of the display panel 100 opposite to the back side 110. When the shell 310 and the edge 111 generate the shell projection range 210 and the edge projection range 220 on the projection plane 200, respectively, the edge projection range 220 falls outside the shell projection range 210. In other words, the projection range of the accommodating space 400 on the projection plane 200 is between the end edge projection range 220 and the side of the housing projection range 210 adjacent to the end edge projection range 220.

The bracket 330 extends at least partially from the housing 310 toward the end edge 111 and extends into the accommodating space 400. In the embodiment shown in fig. 2, the housing 310 may have a sidewall 311 facing the accommodating space 400, and the bracket 330 extends from the sidewall 311 and extends into the accommodating space 400 along a direction substantially parallel to the back side 110. In an embodiment, the bracket 330 may be integrally formed with the housing 310, for example, but not limited to, being formed by bending or cutting the sidewall 311 or other portions of the housing 310 and then bending.

The circuit unit 500 may be provided with a circuit element 550, and is connected with the line signal on the display panel 100 for signal transmission and/or processing. As shown in fig. 2, the circuit unit 500 has a first terminal 501 and a second terminal 502 opposite to each other. The first end 501 is connected to the display panel 100. In an embodiment, the front side 130 has a circuit connection region 131, and the first end 501 of the circuit unit 500 can be structurally and/or signal connected to the circuit connection region 131, but not limited thereto. As shown in fig. 2, the second end 502 of the circuit unit 500 faces the back side 110 due to the circuit unit 500 being bent. In this embodiment, since the first end 501 is connected to the front side 130 of the display panel 100, the circuit unit 500 passes around the edge 111 after being bent, and the second end 502 faces the back side 130. In addition, the second end 502 extends into the accommodating space 400 and is connected to the bracket 330; the second end 502 can be connected to the bracket 330 by various connecting methods such as locking, adhering, welding, and fastening. The bracket 330 is located between the back side 110 of the display panel 100 and the second end 502 of the circuit unit 500 to support the second end 502 of the circuit unit 500 from the side of the circuit unit 500 facing the back side 130. With such a design, at least a portion of the circuit unit 500 can be accommodated in the accommodating space 400 to reduce the thickness of the entire module, and a stable structural support can be obtained.

In the present embodiment, on the projection plane 200, as shown in fig. 1, the vertical projection ranges of the housing 310 and the second end 502 of the circuit unit 500 do not overlap. As shown in fig. 2, the sidewall 311 of the housing 310 and the second end 502 of the circuit unit 500 may be disposed side by side.

In the present embodiment, the circuit unit 500 may include a flexible transmission line 510 and a circuit substrate 530. The flexible transmission line 510 may be, for example, a Flexible Printed Circuit (FPC), one end of which is used as the first end 501 and is connected to the display panel 100. The circuit substrate 530 is connected to the other end of the flexible transmission line 510 opposite to the display panel 100, and the circuit substrate 530 serves as the second end 502 of the circuit unit 500. The circuit substrate 530 is a substrate having a higher hardness than the flexible transmission line 510, such as a printed circuit board, and a plurality of circuit elements 550 are formed thereon for signal processing or transmission. In an embodiment, the circuit component 550 may be an integrated circuit, such as a timing controlled Embedded Driver (TCON Embedded Driver), so as to reduce an area required by the circuit substrate 530, and make the circuit substrate 530 easier to be completely accommodated in the accommodating space 400. As shown in fig. 2, all or at least a portion of the circuit substrate 530 is located in the accommodating space 400 and connected to the bracket 330, and can be supported by the bracket 330. In the embodiment, the circuit board 530 is connected to the bracket 330 by screw locking, but not limited thereto.

Fig. 3 shows a variant embodiment of the display device shown in fig. 2. In the present embodiment, the circuit element 550 is directly carried by the flexible transmission line 510, so that two ends of the flexible transmission line 510 are the first end 501 and the second end 502 respectively and are connected to the display panel 100 and the bracket 330 respectively. The flexible transmission line 510 carries at least one circuit element 550, and the circuit element 550 is disposed on the second end 502 and at least partially accommodated in the accommodating space 400, so as to reduce the overall thickness.

FIG. 4 is a cross-sectional view of another embodiment of a display device. In the present embodiment, the backlight module 300 adopts an edge-light type design, and therefore the light source 350 and the light guide plate 370 are disposed in the housing 310. The light sources 350 are disposed along a side of the housing 310 adjacent to the end edge 111, for example, but not limited thereto. The light guide plate 370 may be disposed in the housing 310 parallel to the back side 110, and the light sources 350 are distributed along one side of the light guide plate 370. In one embodiment, the light source 350 may be a light emitting diode device, a linear light source, or other light sources. The linear light source may be, for example, a light source device formed by linearly arranging light emitting diode chips directly on a long substrate and directly covering a wavelength conversion material. With such a design, the volume required for disposing the light source 350 in the backlight module 300 is reduced, and the accommodating space 400 is correspondingly enlarged.

As shown in fig. 4, the housing 310 has an upper cover plate 317. The upper cover 317 is connected to an end of the sidewall 311 closer to the back side 110 and extends away from the accommodating space 400. The upper cover plate 317 has a top surface 315 facing the back side surface 110, and the top surface 315 supports the back side surface 110 directly or indirectly, but not limited thereto. The light sources 350 are disposed in a stripe-shaped area surrounded by the upper cover 317 and the sidewalls 311, and the upper cover 317 is disposed between the light sources 350 and the back side 110 to block and/or guide light emitted from the light sources 350. In this embodiment, the bracket 330 extends from the middle section of the sidewall 311 and extends into the accommodating space 400. Specifically, as shown in the perspective view of fig. 5, a lug shape may be cut from the bottom of the housing 310, leaving a portion connected to the sidewall 311, and then bent with respect to the connection position with the sidewall 311 to form the bracket 330 extending into the accommodating space 400. In addition, as shown in fig. 4 and 5, the bracket 330 may preferably be bent back and forth to form a step difference, so as to adjust the distance between the second end 502 of the circuit unit 500 and the back side 110, but not limited thereto.

Fig. 6 shows another embodiment of the display device. In the embodiment, the bracket 330 has a connection end 331, and the connection end 331 extends between the top surface 315 and the back side surface 110 and is supported by the top surface 315. The top surface 315 may be, for example, a surface of the upper cover 317 of the housing 310 facing the back side 110; however, in various embodiments, the top surface 315 can be a surface of another supporting frame facing the back side surface 110. In the embodiment, the bracket 330 can be completely attached to the back side 110 through the adhesive layer, so as to provide better protection to the back side 110 and improve the strength of the display panel 100. However, in different embodiments, the bracket 330 may only partially fit the back side 110, for example, the portion of the bracket 330 other than the connecting end 331 may be bent to leave a gap with the back side 110 to provide a buffering space. In addition, in the present embodiment, the support 330 is preferably formed in a long strip shape and is disposed along the end edge 111 to increase the contact area with the back side surface 110, the top surface 315 and/or the circuit unit 500, thereby enhancing the structural stability.

As shown in fig. 6, in the embodiment, since there is no gap between the bracket 330 and the back side surface 110, the circuit unit 500 is, for example, attached to the surface of the bracket 330 opposite to the back side surface 110 in a fitting manner to complete the connection.

Fig. 7 shows a variant of the embodiment shown in fig. 6. In the present embodiment, the buffer material 700 is further disposed between the bracket 330 and the back side 110, and respectively connected to the bracket 330 and the back side 110. The cushioning material 700 is formed in a layer and, for example, is completely attached or coated on the back side 110. One surface of the bracket 330 facing the back side 110 is attached to the other surface of the cushioning material 700 to be indirectly adhered to the back side 110. By the arrangement of the buffer material 700, the display panel 100 can be better protected, and the structural strength can be increased.

Fig. 8 is another embodiment of a display device. In the present embodiment, the housing 310 has a bottom surface 313 opposite to the top surface 315, except for the top surface 315 and the sidewall 311. The two ends of the sidewall 311 are connected to the sides of the top surface 315 and the bottom surface 313, respectively. As shown in fig. 8, the support 330 has a bottom plate 333, a turning plate 335, and a support plate 337. The bottom plate 333 and the supporting plate 337 are connected to opposite ends of the turning plate 335, respectively, and extend in opposite directions. In addition, the turning plate 335 is bent to form an angle, for example, 90 degrees, with respect to the bottom plate 333 and the supporting plate 337, respectively. In other words, the bracket 330 is formed in a stepped structure. One end of the flap 335 is connected to the bottom plate 333 and is bent with respect to the bottom plate 333, and the supporting plate 337 is connected to the other end of the flap 335 with respect to the bottom plate 333. Bottom plate 333 is attached to bottom surface 313, for example, by an adhesive layer; the flap 335 extends along the sidewall 311 and can be connected to the sidewall 311 for structural stability, but not limited thereto. The supporting plate 335 is bent relative to the turning plate 335 and then extends between the second end 502 and the back side 110 of the circuit unit 500 to connect with the circuit unit 500. In the embodiment, the supporting plate 337 is attached to the back side 110 to protect the back side 110 and increase the thickness of the accommodating space 400. However, in various embodiments, the supporting plate 337 may be spaced apart from the back side 110 to provide a buffer space.

Fig. 9 shows another embodiment of the display device. In this embodiment, the display device 10 further includes a patch 800. One end of the patch 800 is attached to the outer surface 140 of the display panel 100 opposite to the back side 110, and is wound around the outer side of the circuit unit 500 and then attached to the housing 310, for example, attached to the bottom surface 313 of the housing 310. The outer surface 140 may be, for example, a surface of the display panel 100 facing a user closer to the user side substrate. The stability of the entire structure can be enhanced by the arrangement of the patch 800. In addition, the patch 800 can be partially provided with glue, and the position and range of the glue preparation can be adjusted according to actual requirements.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A display device, comprising:

a display panel having a back side surface with an edge;

a backlight module facing the back side, wherein the backlight module comprises:

a shell facing the back side surface, on a projection plane parallel to the back side surface, the shell is not overlapped with the end edge and an accommodating space is formed between the shell and the end edge; wherein the housing has:

a bottom surface;

a side wall connected with the side edge of the bottom surface and facing the accommodating space; and

a bracket, at least part of which extends from the shell towards the end edge and extends into the accommodating space; and

a circuit unit having a first end and a second end opposite to each other, the first end being connected to the display panel, the second end being bent to face the back side surface; the second end of the circuit unit extends into the accommodating space and is connected to the bracket, and the bracket is positioned between the back side surface of the display panel and the second end of the circuit unit;

wherein, this support has:

a bottom plate, which is attached to the bottom surface;

a transfer flap having one end connected to the bottom plate and bent with respect to the bottom plate to extend along the sidewall and

and the supporting plate is connected to the other end of the turning plate, which is opposite to the bottom plate, and is bent relative to the turning plate so as to extend between the back side surface of the display panel and the second end of the circuit unit to be connected with the circuit unit.

2. The display device according to claim 1, wherein the second end of the circuit unit does not overlap with the housing on the projection plane parallel to the rear side.

3. The display device of claim 1, wherein the housing has a top surface facing the back side surface, the bracket having a connecting end extending between the top surface and the back side surface and supported by the top surface.

4. The display device of claim 1, wherein the housing has:

the upper cover plate is connected with one end of the side wall close to the back side surface and extends towards the direction far away from the accommodating space, and the top surface of the upper cover plate faces to one side of the back side surface;

the backlight module comprises a light source, and the upper cover plate is arranged between the light source and the back side surface.

5. The display device of claim 1, wherein the housing has:

a top surface facing the back side surface;

wherein, the bottom surface is back to the top surface, and the side of this top surface is connected to this lateral wall.

6. The display apparatus according to claim 1, wherein the bracket extends from the sidewall to extend into the accommodating space.

7. The display apparatus of claim 6, wherein the bracket extends from the sidewall and is integrally formed with the housing.

8. The display device according to any one of claims 1 to 7, further comprising a buffer material disposed between and connecting the frame and the back side surface, respectively.

9. The display device of any one of claims 1 to 7, wherein the support is at least partially attached to the back side.

10. The display device as claimed in any one of claims 1 to 7, wherein the display panel has a front side surface opposite to the back side surface, and the front side surface has a circuit connection region thereon, the first end of the circuit unit being connected to the circuit connection region.

11. The display device of any one of claims 1 to 7, further comprising a patch; the display panel is provided with an outer surface opposite to the back side surface, one end of the adhesive cloth is attached to the outer surface, and the adhesive cloth bypasses the circuit unit and is attached to the shell.

12. The display device according to any one of claims 1 to 7, wherein the circuit unit comprises:

a flexible transmission line, one end of which is used as the first end and connected to the display panel; and

a circuit substrate connected to the other end of the flexible transmission line opposite to the display panel and used as the second end of the circuit unit; the circuit substrate is at least partially positioned in the accommodating space and connected with the bracket.

13. The display device according to any one of claims 1 to 7, wherein the circuit unit comprises:

a flexible transmission line, one end of which is used as the first end and connected to the display panel, and the other end of which is used as the second end and extends into the accommodating space and is connected to the bracket; and

at least one circuit element is arranged on the second end and at least partially positioned in the accommodating space.