TWI707182B - Backlight module and display device - Google Patents

Abstract

This creation is a backlight module and a display device. The display device includes the backlight module and a display panel arranged on the backlight module. The backlight module includes a back plate, and a light guide plate and a light guide plate arranged on the back plate. Bars and frames. The light bars are located on the light-incident side of the light guide plate. The creative backlight module and display device are mainly formed with an isolated space on the frame to reduce the contact area between the frame plate and the outer frame before the frame. In order to reduce the amount of heat conduction from the light bar to the outside of the frame, it can effectively prevent consumers from being scalded when touching the frame, thereby improving the safety of the display device.

Description

Backlight module and display device

This creation is a backlight module providing a backlight source and a display device with the backlight module.

Please refer to FIG. 10, the current display device includes a backlight module and a display panel 90. The backlight module is mainly provided with a light guide plate 81 in a back plate 80, and the back plate 80 is adjacent to the light guide plate 81 A light strip 82 is provided on the light entrance side 811, and an outer frame 83 is provided on the periphery of the back plate 80. The outer frame 83 is located in front of the light emitting surface 812 of the light guide plate 81, and the display panel 90 is provided on the Between the light guide plate 81 and the outer frame 83.

At present, the thinning of display devices has become the current development trend. As the overall thickness of the display device is reduced, the configuration space at the light incident side 811 of the light guide plate 81 of the backlight module is also reduced with the reduction of the overall thickness. , Causing the outer frame 83 to be close to the light bar 82, but when the display device is in use, when the backlight module is activated, the light bar 82 will generate high temperature, making the outer frame 83 When the backlight module is turned on, it presents a high temperature state, and if the consumer accidentally touches it, there may be concerns about burns.

The main purpose of this creation is to provide a backlight module and a display device, hoping to improve the problem that the outer frame of the current display device is easily exposed to a high temperature due to heat conduction, which causes the user to be easily burned when touched by accident.

In order to achieve the purpose of the foregoing disclosure, the backlight module proposed in this creation includes: a back plate; a light guide plate, which is installed in the back plate, the light guide plate has a light emitting surface, and is formed on one side of the light emitting surface A light-incident side; a light bar, which is arranged in the back plate and located on the light-incident side of the light guide plate; a frame, which is arranged on the periphery of the back plate, and the frame has a side plate and a The front frame plate portion, the side plate portion is located on the other side of the light bar relative to the light guide plate, and the front frame plate portion is connected to the side plate portion and is located in front of the light emitting surface of the light guide plate, the front frame plate portion An isolation space is formed with the light bar; and at least one blocking unit is arranged in the isolation space and abuts against the front frame plate portion of the frame or the light bar in a point contact manner.

Wherein, the blocking unit is formed on the front frame portion of the frame and extends toward the light bar; or the blocking unit is formed on the light bar and facing toward the front frame portion of the frame extend.

Wherein, the distance from the light bar to the front frame plate portion is greater than the distance from the light bar to the side plate portion.

The creative backlight module mainly uses the structural design of the frame to reduce the contact area between the frame of the backlight module and the light bar, thereby reducing the amount of heat conduction from the light bar to the frame, so that the frame It is not easy to present a high temperature state due to heat conduction, which can effectively prevent consumers from being scalded when touching the frame.

In addition, the blocking unit can abut the front frame plate portion or the light bar with a minimum contact area, while providing a supporting effect between the frame and the light bar, thereby improving the overall structure of the backlight module strength.

In order to achieve the purpose of the foregoing disclosure, the backlight module proposed by this creation includes: a back plate; a light guide plate, which is installed in the back plate, the light guide plate has a light emitting surface, and is formed on one side of the light emitting surface A light-incident side; a light bar, which is arranged in the back plate and located on the light-incident side of the light guide plate; a frame, which includes a side plate, a front frame plate and an outer frame, the side plate The part is located on the other side of the light bar relative to the light guide plate, and the front frame plate part is connected to the side plate part and is located in front of the light emitting surface of the light guide plate. The outer frame covers the side plate part and the front The frame plate portion, and an isolation space is formed between the outer frame and the front frame plate portion; and at least one blocking unit is connected to the outer frame and the front frame plate portion in a point contact manner.

Wherein, the backlight module includes a plurality of the blocking units, and the blocking units abut against the outer frame or the front frame plate portion.

Wherein, the barrier unit is formed on the front frame plate portion and extends toward the outer frame; or the barrier unit is formed on the outer frame and extends toward the front frame plate portion.

The creative backlight module mainly uses the structural design of the frame to reduce the contact area between the front frame of the frame and the outer frame, thereby reducing the heat conduction of the light bar through the front frame to the outer frame Therefore, the outer frame of the frame is not easily exposed to a high temperature state due to heat conduction, which can effectively prevent consumers from being scalded when touching the outer frame.

In addition, the barrier unit can abut the front frame plate portion or the outer frame with a minimum contact area, while providing a supporting effect between the front frame plate portion and the outer frame, thereby improving the structure of the frame strength.

In order to achieve the purpose of the foregoing disclosure, another display device proposed by this creation includes: a backlight module as described above; and a display panel, which is located on one side of the light-emitting surface of the backlight module and is arranged on the backlight module frame.

As mentioned above, the present creative display device can reduce the amount of heat conduction from the light bar to the outside of the frame through the structural design of the frame of the backlight module, which can effectively avoid consumers’ suspicion of being burned when touching the frame. Furthermore, the use safety of the display device is improved.

10: Backplane

20: Light guide plate

21: Glossy surface

22: Light side

30: light strip

40a, 40b: frame

41: side panel

42: front frame

43a, 43b: isolated space

44: Outer frame

50a, 50b: barrier unit

51a, 51b: barrier unit

60: display panel

80: backplane

81: Light guide plate

811: Light side

812: Glossy Surface

82: light strip

83: Outer frame

90: display panel

L1: The distance between the light bar and the front frame plate

L2: The distance between the light bar and the side plate

Figure 1: This is a schematic diagram of the creative display device with the backlight module of the first preferred embodiment.

Figure 2: This is a schematic diagram of the creative display device with the backlight module of the second preferred embodiment.

Figure 3: A schematic cross-sectional view of A-A in Figure 2.

Figure 4: This is a schematic diagram of the creative display device with the backlight module of the third preferred embodiment.

Figure 5: A schematic cross-sectional view of B-B in Figure 4.

Fig. 6 is a schematic diagram of a creative display device with a fourth preferred embodiment of the backlight module.

Fig. 7 is a schematic cross-sectional view of C-C in Fig. 6.

Fig. 8 is a schematic diagram of a creative display device with a fifth preferred embodiment of the backlight module.

Figure 9: is a schematic diagram of the D-D cross-section of Figure 8.

Figure 10: Schematic diagram of conventional display device.

Please refer to FIG. 1, which is the first preferred embodiment of the creative backlight module, which includes a back plate 10, a light guide plate 20, a light bar 30 and a frame 40a.

The light guide plate 20 is installed in the back plate 10. The light guide plate 20 has a light exit surface 21 and a light entrance side surface 22 formed on one side of the light exit surface 21.

The light bar 30 is disposed in the back plate 10 and located on the light incident side 22 of the light guide plate 20.

The frame 40a is arranged on the periphery of the back plate 10. In this embodiment, the frame 40a has a side plate 41 and a front frame plate 42. The side plate 41 is located on the light bar 30 relative to the light guide plate 20. And the front frame plate portion 42 is connected to the side plate portion 41 and is located in front of the light emitting surface 21 of the light guide plate 20. An isolation space 43a is formed between the front frame plate portion 42 and the light bar 30, Wherein, the distance L1 from the light bar 30 to the front frame plate portion 42 is greater than the distance L2 from the light bar 30 to the side plate portion 41. There is a gap between the light bar 30 and the back plate 10 shown in FIGS. 1 and 2 to facilitate the description of the distance L2; in other embodiments, there may be no gap between the light bar 30 and the back plate 10 .

As shown in FIGS. 2 to 5, in the second preferred embodiment and the third preferred embodiment of the creative backlight module, the backlight module includes at least one blocking unit 50a, 50b, and the blocking unit 50a, 50b abut against the front frame portion 42 of the frame 40a or the light bar 30 in a point contact manner to form the isolation space 43a, thereby reducing the gap between the light bar 30 and the front frame board 42 The contact area between the two can effectively reduce the heat transferred from the light bar 30 to the front frame plate 42. Among them, as shown in FIGS. 2 and 3, the second type of backlight module in this invention is better In an embodiment, the blocking unit 50a is formed on the front frame portion 42 of the frame 40a, and extends toward the light bar 30; as shown in FIGS. 4 and 5, in the third part of the creative backlight module In a preferred embodiment, the blocking unit 50b is formed on the light bar 30 and extends toward the front frame 42 of the frame 40a.

Please refer to FIGS. 6-9, which are the fourth and fifth preferred embodiments of the creative backlight module, which includes a back plate 10, a light guide plate 20, a light bar 30, a frame 40b and at least one blocking unit 51a, 51b.

The light guide plate 20 is installed in the back plate 10. The light guide plate 20 has a light exit surface 21 and a light incident side surface 22 formed on one side of the light exit surface 21.

The light bar 30 is disposed in the back plate 10 and located on the light incident side 22 of the light guide plate 20.

The frame 40b includes a side plate 41, a front frame plate 42 and an outer frame 44. The side plate 41 is located on the other side of the light bar 30 relative to the light guide plate 20, and the front frame plate 42 is connected The side plate portion 41 is located in front of the light emitting surface 21 of the light guide plate 20, the outer frame 44 covers the side plate portion 41 and the front frame plate portion 42, and the outer frame 44 and the front frame plate portion 42 An isolated space 43b is formed between.

The blocking units 51a, 51b are connected to the outer frame 44 and the front frame plate portion 42 in a point contact manner, wherein the backlight module can further include a plurality of the blocking units 51a, 51b, the blocking units 51a, 51b abuts against the outer frame 44 or the front frame plate 42 in a point contact manner.

Among them, in the fourth preferred embodiment of the creative backlight module, the blocking unit 51a is formed on the front frame plate portion 42 and extends toward the outer frame 44; and in the creative backlight module In the fifth preferred embodiment of the group, the blocking unit 51b is formed on the outer frame 44 and extends toward the front frame plate portion 42.

Please refer to Figures 1 to 9 for several preferred embodiments of creative display devices, which include a backlight module as described above and a display panel 60, which is located on the light-emitting surface of the backlight module One side of 21 is arranged on the frame 40a, 40b of the backlight module.

可得 知，當熱傳導距離(L)、熱傳導係數(K)及溫差(△T)不變的情況下，所述熱傳導量(Q)會與所述接觸面積(A)呈正比，意即透過減少構件之間的接觸面積(A)能降低熱傳導量(Q)。 This creative display device is mainly based on the heat conduction formula:

It can be seen that when the heat transfer distance (L), heat transfer coefficient (K) and temperature difference (△T) remain unchanged, the heat transfer amount (Q) will be proportional to the contact area (A), which means that through Reducing the contact area (A) between components can reduce the amount of heat transfer (Q).

Taking the first preferred embodiment of the creative backlight module as an example, the backlight module is mainly formed between the front frame portion 42 of the frame 40a and the light bar 30 to form the isolation space 43a to reduce the The contact area between the frame 40a and the light bar 30 further reduces the heat conducted by the light bar 30 to the frame 40a.

In the second preferred embodiment and the third preferred embodiment of the creative backlight module, the backlight module is mainly formed between the front frame portion 42 of the frame 40a and the light bar 30 Isolate the space 43a, and abut the front frame plate 42 or the light bar 30 in point contact through the barrier units 50a, 50b, so that the barrier units 50a, 50b can abut the barrier units 50a, 50b with a minimum contact area. The front frame plate portion 42 or the light bar 30 provides a supporting effect between the frame 40a and the light bar 30, which can effectively reduce the heat conducted by the light bar 30 to the outside of the frame 40a, and at the same time improve the backlight The overall structural strength of the module.

In addition, in the fourth preferred embodiment and the fifth preferred embodiment of the creative backlight module, the backlight module is mainly formed between the front frame 42 and the outer frame 44 of the frame 40b. Isolate the space 43b, and abut the front frame plate 42 or the outer frame 44 in point contact through the blocking units 51a, 51b to reduce the contact area between the front frame plate 42 and the outer frame 44 , And provide the supporting effect between the front frame plate portion 42 and the outer frame 44, which can effectively reduce the heat conducted to the outer frame 44 from the front frame plate portion 42 of the frame 40b, and improve the overall structure of the backlight module strength.

In summary, the present creative display device can reduce the contact area between the internal components of the backlight module through the structural design of the backlight module, so as to reduce the amount of heat conduction from the light bar 30 to the outside of the frame 40a, 40b. This effectively prevents consumers from being scalded when touching the frames 40a, 40b, thereby improving the safety of the display device.

10: Backplane

20: Light guide plate

21: Glossy surface

22: Light side

30: light strip

40a: frame

41: side panel

42: front frame

43a: isolated space

60: display panel

L1: The distance between the light bar and the front frame plate

L2: The distance between the light bar and the side plate

Claims (9)

A backlight module includes: a back plate; a light guide plate installed in the back plate, the light guide plate having a light exit surface, and a light entrance side formed on one side of the light exit surface; Bar, which is arranged in the back plate and located on the light-incident side of the light guide plate; a frame is arranged on the periphery of the back plate, and the frame has a side plate part and a front frame plate part, the side plate part Is located on the other side of the light bar relative to the light guide plate, and the front frame plate portion is connected to the side plate portion and is located in front of the light emitting surface of the light guide plate, and a gap is formed between the front frame plate portion and the light bar An isolation space; and at least one blocking unit, the blocking unit abuts the front frame plate portion of the frame or the light strip in a point contact manner. The backlight module according to claim 1, wherein the blocking unit is formed on the front frame portion of the frame and extends in the direction of the light bar. The backlight module according to claim 1, wherein the blocking unit is formed on the light bar and extends toward the front frame portion of the frame. The backlight module according to any one of claims 1 to 3, wherein the distance from the light bar to the front frame plate portion is greater than the distance from the light bar to the side plate portion. A backlight module comprising: a back plate; a light guide plate installed in the back plate, the light guide plate having a light exit surface, and a light entrance side formed on one side of the light exit surface; Bar, which is arranged in the back plate and located on the light incident side of the light guide plate; A frame including a side plate portion, a front frame plate portion and an outer frame, the side plate portion is located on the other side of the light bar relative to the light guide plate, and the front frame plate portion is connected to the side plate portion and is located at the In front of the light exit surface of the light guide plate, the outer frame covers the side plate portion and the front frame plate portion, and an isolation space is formed between the outer frame and the front frame plate portion; and at least one blocking unit is The outer frame and the front frame plate are connected in a point contact manner. The backlight module according to claim 5, wherein the backlight module includes a plurality of the blocking units, and the blocking units abut the outer frame or the front frame plate in a point contact manner. The backlight module according to claim 5 or 6, wherein the blocking unit is formed on the front frame plate portion and extends toward the outer frame. The backlight module according to claim 5 or 6, wherein the blocking unit is formed on the outer frame and extends toward the front frame plate portion. A display device, comprising: a backlight module according to any one of claims 1 to 8; and a display panel, which is located on one side of the light-emitting surface of the backlight module and is arranged on the backlight module The frame of the group.

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