TWM553819U - Backlight module and display device - Google Patents

Description

Backlight module and display device

The present invention relates to a light source module, and more particularly to a backlight module and a display device.

With the continuous development of backlight display technology, display devices such as liquid crystal displays (LCDs) have been widely used as display elements in electronic products such as mobile phones and televisions. With the narrower frame of electronic products and the continuous advancement of technology, the large size of the LCD screen display and the thinning of the frame have become more and more mainstream demands in the market.

As an important component in liquid crystal displays, the backlight module has become a trend. The narrow border means that the screen area can be seen under the same size screen, and the visual effect is better. A conventional backlight module generally includes: a light guide plate, a plastic frame disposed around the light guide plate, a flexible circuit board, an optical film, and a light shielding tape, wherein the flexible circuit board is fixed to the light guide plate by the light shielding tape and On the plastic frame, the optical film is usually fixed and suspended by an ear having a hole on its side, and is fixed on the plastic frame by a light shielding tape. However, the aforementioned ear portion increases the width of the side of the backlight module, which is disadvantageous for the narrow frame requirement of the product.

Therefore, one of the objects of the present invention is to provide a backlight module that can be applied to a narrow bezel design.

The backlight module of the present invention comprises a light source, a back plate, a light guide plate disposed on the back plate, and at least one film stacked on the light guide plate. Wherein the backboard has at least one light incident side adjacent to the light source, And at least one through slot on the non-light incident side. A portion of the at least one film is bent and extends along a side of the light guide plate, and extends through the through groove of the back plate to a side of the back plate opposite to the light guide plate, and is fixed to the back plate .

Another technical means of the present invention is that the at least one diaphragm has a body portion and at least one fixing portion extending outward from the body portion, the body portion is superposed on the light guide plate, the A fixing portion extends through the through groove of the back plate to a side of the back plate opposite to the light guide plate, and is fixed to the back plate.

Another technical means of the present invention is that the at least one fixing portion has a bending portion which is bent and extended by the sheet portion, and a positioning portion which is bent and extended by the bending portion and is fixed to the back plate .

According to still another aspect of the present invention, a first fold line is formed between the body portion and the bent portion of the at least one fixing portion.

Another technical means of the present invention is that a second fold line is formed between the bent portion of the at least one fixing portion and the positioning portion.

Another technical means of the present invention is that a plurality of through holes are formed at intervals on the first fold line.

A further technical means of the present invention is that a plurality of through holes are formed at intervals on the second fold line.

Another technical means of the present invention is that the positioning section of the at least one fixing portion is adhered to the backing plate by adhesive, double-sided tape or tape.

A further technical means of the present invention is that the number of the at least one diaphragm is plural, and the diaphragm defined at the uppermost portion is a first diaphragm, and at least one between the first diaphragm and the light guide plate. a second diaphragm, a portion of the first diaphragm extending along a side of the at least one second diaphragm and the light guide plate, and a through slot of the back panel to the back panel opposite to the light guide plate One side and is fixed to the back plate.

Another object of the present invention is to provide a display device The display device includes the backlight module described above.

The beneficial effect of the present invention is that the fixing position of the diaphragm can be transferred from the prior art lug to the back by the through slot of the backboard and the structural design of the at least one diaphragm passing through the through slot. On the back side of the board, the width of the mounting ears is omitted, which is advantageous for the narrow frame of the overall structure.

2‧‧‧ Backplane

21‧‧‧through slots

3‧‧‧Light guide plate

4‧‧‧First diaphragm

41‧‧‧ Body

42‧‧‧ Fixed Department

421‧‧‧Bend section

422‧‧‧ positioning segment

423‧‧‧First fold line

424‧‧‧ second fold line

425‧‧‧through holes

5‧‧‧second diaphragm

6‧‧‧ display panel

9‧‧‧ Tape

1 is a partial perspective view of a preferred embodiment of the present invention; FIG. 2 is a partial perspective view of the preferred embodiment of the present invention; and FIG. 3 is a partial perspective view A preferred embodiment of the present display device will be described.

The related features and technical details of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 1 and FIG. 2, a preferred embodiment of the present invention includes a light source (not shown), a backplane 2, a light guide plate 3 disposed on the backplane 2, and a plurality of stacked a diaphragm on the light guide plate 3. The diaphragm located at the uppermost position is a first diaphragm 4, and a plurality of second diaphragms 5 located between the first diaphragm 4 and the light guide plate 3.

The backplane 2 has a light incident side adjacent to the light source and a through slot 21 on the non-light incident side. A portion of the first diaphragm 4 extends through the through slot 21 of the backboard 2 to a side of the backboard 2 opposite to the light guide panel 3, and is fixed to the backboard 2. In more detail, the first diaphragm 4 has a single body portion 41 and a fixing portion 42 extending outward from the sheet portion 41. The body portion 41 is stacked on the second diaphragm 5 and the light guide plate 3. The fixing portion 42 is bent and extends along the side of the light guide plate 3, and The through-groove 21 of the back plate 2 extends to a side of the back plate 2 opposite to the light guide plate 3 and is fixed to the back plate 2 .

It should be noted that, in this embodiment, the light source is a side-in type LED light source, and because of the viewing angle relationship, only the non-light incident side is shown and the light source is not drawn. In addition, the number of the through-grooves 21 and the fixing portion 42 is described as an example, and may be plural in actual implementation, and is not limited to those disclosed in the embodiment.

The fixing portion 42 has a bending portion 421 which is bent and extended by the sheet portion 41, and a positioning portion 422 which is bent and extended by the bending portion 421 and fixed to the back plate 2. A first fold line 423 is formed between the body portion 41 and the bent portion 421 of the fixing portion 42. A second fold line 424 is formed between the bending section 421 and the positioning section 422. A plurality of through holes 425 are formed in the first fold line 423 and the second fold line 424 .

When the assembly is actually performed, the light guide plate 3 is first placed on the back plate 2, and the second film 5 is stacked on the light guide plate 3, and then the body portion of the first diaphragm 4 is placed. 41 is stacked on the second diaphragm 5 and the light guide plate 3. Next, the fixing portion 42 of the first diaphragm 4 is bent along the first folding line 423, so that the bending portion 421 is bent at an angle with respect to the sheet portion 41, and the bending portion 421 is along The side of the light guide plate 3 extends and protrudes through the through groove 21 of the back plate 2. Then, the fixing portion 42 is bent along the second folding line 424, so that the positioning portion 422 is bent at an angle with respect to the bending portion 421, and extends to the back plate 2 opposite to the light guide plate 3 side. Finally, the positioning segment 422 is adhered to the back plate 2.

The first fold line 423, the second fold line 424, and the through hole 425 are designed to make the fixing portion 42 smoother and less laborious when bending. The adhesive method can be glued, double-sided tape, or tape. In Figure 2, a tape 9 is used for bonding. As shown in FIG. 3, a display panel 6 is disposed on the assembled backlight module, that is, a display device.

In summary, the backlight module and the display device of the present invention are designed by the structure of the fixing portion 42 extending outward from the body portion 41 in the first diaphragm 4, and then cooperate with the through plate 2 The groove 21 is formed by the first diaphragm 4 passing through the through groove 21 to be fixed on the back surface of the back plate 2, thereby achieving the effect of coating and fixing the second film 5 and the light guide plate 3. Moreover, the fixing position of the first diaphragm 4 and the second diaphragm 5 can be transferred from the mounting lug of the prior art to the back surface of the backboard 2, the width of the lug is omitted, and the narrow frame of the overall structure is facilitated. Therefore, it is indeed possible to achieve the purpose of this new type.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent.

2‧‧‧ Backplane

21‧‧‧through slots

3‧‧‧Light guide plate

4‧‧‧First diaphragm

41‧‧‧ Body

42‧‧‧ Fixed Department

421‧‧‧Bend section

422‧‧‧ positioning segment

424‧‧‧ second fold line

425‧‧‧through holes

5‧‧‧second diaphragm

9‧‧‧ Tape

Claims (10)

A backlight module includes: a light source; a back plate having at least one light incident side adjacent to the light source; and at least one through groove on the non-light incident side; a light guide plate disposed on the back plate; a film disposed on the light guide plate, wherein a portion of the at least one film is bent and extends along a side of the light guide plate, and a through groove extending through the back plate extends to the back plate opposite to the back plate One side of the light guide plate is fixed to the back plate. The backlight module of claim 1, wherein the at least one film has a body portion and at least one fixing portion extending outward from the body portion, the body portion being stacked On the light guide plate, the at least one fixing portion extends through the through groove of the back plate to a side of the back plate opposite to the light guide plate, and is fixed to the back plate. The backlight module of claim 2, wherein the at least one fixing portion has a bent portion extending from the body portion, and is bent and extended from the bent portion and fixed to the back A positioning segment on the board. The backlight module of claim 3, wherein a first fold line is formed between the body portion and the bent portion of the at least one fixing portion. The backlight module of claim 3, wherein a second fold line is formed between the bent portion of the at least one fixing portion and the positioning portion. According to the backlight module of claim 4, wherein the A plurality of through holes are formed at intervals on a fold line. The backlight module of claim 5, wherein the second fold line is formed with a plurality of through holes at intervals. The backlight module of claim 3, wherein the positioning segment of the at least one fixing portion is adhered to the backing plate by adhesive, double-sided tape or tape. The backlight module of claim 1, wherein the at least one diaphragm is plural, the diaphragm at the top is defined as a first diaphragm, and the first diaphragm and the guide are located. At least one second film between the light plates, a portion of the first film extends along a side of the at least one second film and the light guide plate, and the back through the through groove of the back plate The plate is opposite to one side of the light guide plate and is fixed to the back plate. A display device, comprising a backlight module as set forth in any one of claims 1 to 9, and a display panel disposed on the backlight module.