Display device

Abstract

A display device comprises a backlight module, a light modulation module and a camera module. The light modulation module is used for modulating light from the backlight module. The camera module comprises a lens assembly. The backlight module is located between the camera module and the light modulation module, and the backlight module comprises a first reflector. The first reflector is arranged corresponding to the lens assembly. The reflectivity of the first reflecting piece in the visible light wave band is within the range of 35%-95%, and the penetration rate of the first reflecting piece in the infrared wave band is larger than 0%.

Description

Technical Field

[0001] The invention relates to a display device. Background Art

[0002] Nowadays, car manufacturers use camera systems to improve driving safety based on driving safety considerations. Specifically, camera modules are configured in the in-car display device. However, dark holes will appear in the display area, making the driver feel like they are being monitored, and the dark holes will reduce the display quality. Summary of the invention

[0003] The object of the present invention is to provide a display device that can display images and capture images, and a camera module can correspond to a display area without generating dark holes.

[0004] According to one embodiment of the present invention, a display device is provided, comprising a backlight module, a light modulation module and a camera module. The light modulation module is used to modulate light from the backlight module. The camera module comprises a lens assembly. The backlight module is located between the camera module and the light modulation module, and the backlight module comprises a first reflector. The first reflector is arranged corresponding to the lens assembly. The reflectivity of the first reflector in the visible light band falls within the range of 35% to 95%, and the transmittance in the infrared band is greater than 0%.

[0005] Based on the above, the display device provided by the embodiment of the present invention has a backlight module and a camera module, and a first reflector corresponding to the lens assembly of the camera module is arranged in the backlight module, and the first reflector can be penetrated by infrared light. Therefore, the camera module can be implemented as an infrared camera module, and the display device can be used to display images and take images. In addition, the first reflector can reflect visible light, which can avoid the appearance of dark holes in the display device. Therefore, the first reflector can correspond to the display area of ​​the display device, without being limited to the non-display area, which greatly increases the design margin of the display device.

[0006] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 , Figure 2A , Figure 3 as well as Figure 4 Schematic diagram showing a display device according to some embodiments of the present invention.

[0008] Figure 2B A schematic diagram showing a first reflective member according to an embodiment of the present invention is shown.

[0009] Figure 5 as well as Figure 6 A partial image of a display device according to an embodiment of the present invention is shown.

[0010] The reference numerals are as follows:

[0011] 1, 2, 3, 4: Display device

[0012] 100, 200, 300, 400: Backlight module

[0013] 100H, 200H, 300H, 400H: Open

[0014] 101: Optical Modulation Module

[0015] 102: Brightening film

[0016] 103: Diffuser

[0017] 104: Prism

[0018] 105:Diffuser plate

[0019] 106, 306: second reflector

[0020] 107, 207: first reflector

[0021] 108: Circuit board

[0022] 109: Light-emitting element

[0023] 110: Back panel

[0024] 111: Camera module

[0025] 207B:Ontology

[0026] 207H:Through hole

[0027] 305: Light guide plate

[0028] LA: Lens Assembly DETAILED DESCRIPTION

[0029] Reference Figure 1 , which shows a schematic diagram of a display device according to a first embodiment of the present invention. The display device 1 includes a backlight module 100, a light modulation module 101 and a camera module 111. The light modulation module 101 is, for example, a liquid crystal display panel, which is used to modulate light from the backlight module 100. The camera module 111 includes a lens assembly LA. The backlight module 100 is located between the camera module 111 and the light modulation module 101. The backlight module 100 includes a first reflector 107, which is arranged corresponding to the lens assembly LA. The reflectivity of the first reflector 107 in the visible light band falls within the range of 65% to 95%, and the transmittance in the infrared band is greater than 0%.

[0030] Since light in the infrared band can penetrate the first reflector 107, the camera module 111 can be an infrared camera module. In a preferred embodiment, the transmittance of the first reflector 107 in the infrared band falls within the range of 60% to 95%. In addition, since the reflectivity of the first reflector 107 in the visible light band falls within the range of 65% to 95%, the visible light from the backlight module 100 can be reflected by the first reflector 107, and the first reflector 107 is visible. Compared to a comparative example in which the first reflector 107 is not provided, the display device 1 of this embodiment can avoid the appearance of dark holes in the area corresponding to the lens assembly LA. In other words, this area can be in the display area of ​​the display device 1, which greatly improves the design margin of the display device 1. The first reflector 107 of this embodiment can be 3M TM This can be achieved by using Sensor Camouflage Film, but is not limited to this.

[0031] The backlight module 100 may also include a plurality of light emitting elements 109, a diffuser plate 105, a prism sheet 104, a diffuser sheet 103, and a brightness enhancement film 102. The diffuser plate 105, the prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 are stacked in sequence to form a stacked structure, but the stacking sequence of the diffuser plate 105, the prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 is not limited thereto. The stacked structure has an opening 100H that overlaps with the first reflector 107. After the light emitted by the plurality of light emitting elements 109 is reflected by the stacked structure, it can travel toward the first reflector 107, making the first reflector 107 visible, such as Figure 5 shown.

[0032] The backlight module 100 may further include a second reflector 106 disposed on the same layer as the first reflector 107. This can prevent the light provided by the light emitting element 109 from being absorbed by the circuit substrate 108 and the back plate 110, thereby improving the current efficiency of the display device 1.

[0033] Reference Figure 2A as well as Figure 2B , Figure 2A A schematic diagram showing a display device according to a second embodiment of the present invention is shown. Figure 2B A schematic diagram of the first reflector according to the second embodiment is shown. The display device 2 includes a backlight module 200, a light modulation module 101 and a camera module 111. The light modulation module 101 is, for example, a liquid crystal display panel, which is used to modulate light from the backlight module 200. The camera module 111 includes a lens assembly LA. The backlight module 200 is located between the camera module 111 and the light modulation module 101. The backlight module 200 includes a first reflector 207, which is arranged corresponding to the lens assembly LA. The reflectivity of the first reflector 207 in the visible light band falls within the range of 35% to 65%, and the transmittance in the infrared band is greater than 0%.

[0034] Since the light in the infrared band can penetrate the first reflector 207, the camera module 111 can be an infrared camera module. In a preferred embodiment, the transmittance of the first reflector 207 in the infrared band falls within the range of 30% to 60%. In addition, since the reflectivity of the first reflector 207 in the visible light band falls within the range of 35% to 65%, the visible light from the backlight module 200 can be reflected by the first reflector 207, and the first reflector 207 is visible. Compared with a comparative example in which the first reflector 207 is not provided, the display device 2 of this embodiment can avoid the appearance of a dark hole in the area corresponding to the lens assembly LA. In other words, this area can be in the display area of ​​the display device 2, greatly improving the design margin of the display device 2.

[0035] The first reflector 207 has a body 207B and a plurality of first through holes 207H penetrating the body 207B. The transmittance of the body 207B in the infrared band can be, for example, close to 0%, and the reflectance of the surface of the body 207B in the +Z direction in the visible light band can be greater than or equal to 90%. The vertical projection area of ​​each first through hole 207H on the optical effective area of ​​the lens assembly LA is not zero, and accordingly, the infrared rays incident on the display device 2 can pass through the plurality of first through holes 207H and form an image in the camera module 111. In some embodiments, the aperture ratio of the first reflector 207 falls within the range of 30% to 60% (i.e., the transmittance of the first reflector 207 in the infrared band falls within the range of 30% to 60%), or falls within the range of 35% to 65% (i.e., the transmittance of the first reflector 207 in the infrared band falls within the range of 35% to 65%).

[0036] In one embodiment, the display device 2 is implemented as a vehicle display device, the object distance of the lens assembly LA falls within the range of 55 cm to 65 cm, and the full field angle is greater than or equal to 30 degrees. The opening ratio of the first reflector 207 falls within the range of 48% to 52%, the aperture width of each first through hole 207H falls within the range of 0.25 mm to 0.35 mm, and the spacing between adjacent first through holes 207H falls within the range of 0.08 mm to 0.12 mm.

[0037] The backlight module 200 may also include a plurality of light-emitting elements 109, a diffuser plate 105, a prism sheet 104, a diffuser sheet 103, and a brightness enhancement film 102. The diffuser plate 105, the prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 are stacked in sequence to form a stacked structure, but the stacking sequence of the diffuser plate 105, the prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 is not limited thereto. The stacked structure has an opening 200H that overlaps with the first reflector 207. After being reflected by the stacked structure, the light emitted by the plurality of light-emitting elements 109 can travel toward the first reflector 207, making the first reflector 207 visible, such as Figure 6 shown.

[0038] The backlight module 200 may further include a second reflector 106 disposed on the same layer as the first reflector 207. The second reflector 106 has a plurality of second through holes. The plurality of light emitting elements 109 respectively pass through the plurality of second through holes of the second reflector 106. The aperture width of each second through hole is greater than the aperture width of each first through hole 207H. Figure 2A shown.

[0039] Reference Figure 3 , which shows a schematic diagram of a display device according to a third embodiment of the present invention. The display device 3 includes a backlight module 300, a light modulation module 101 and a camera module 111. The light modulation module 101 is, for example, a liquid crystal display panel, which is used to modulate light from the backlight module 300. The camera module 111 includes a lens assembly LA. The backlight module 300 is located between the camera module 111 and the light modulation module 101. The backlight module 300 includes a first reflector 107, which is arranged corresponding to the lens assembly LA. The reflectivity of the first reflector 107 in the visible light band falls within the range of 65% to 95%, and the transmittance in the infrared band is greater than 0%.

[0040] Since light in the infrared band can penetrate the first reflector 107, the camera module 111 can be an infrared camera module. In a preferred embodiment, the transmittance of the first reflector 107 in the infrared band falls within the range of 60% to 95%. In addition, since the reflectivity of the first reflector 107 in the visible light band falls within the range of 65% to 95%, the visible light from the backlight module 300 can be reflected by the first reflector 107, and the first reflector 107 is visible. Compared to a comparative example in which the first reflector 107 is not provided, the display device 3 of this embodiment can avoid the appearance of dark holes in the area corresponding to the lens assembly LA. In other words, this area can be in the display area of ​​the display device 3, greatly improving the design margin of the display device 3. The first reflector 107 of this embodiment can be 3M TM This can be achieved by using Sensor Camouflage Film, but is not limited to this.

[0041] The backlight module 300 may further include a plurality of light emitting elements 109, a prism sheet 104, a diffuser sheet 103, and a brightness enhancement film 102. The prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 are sequentially stacked to form a stacked structure. The stacked structure has an opening 300H that overlaps with the first reflector 107. The backlight module 300 further includes a light guide plate 305. The area of ​​the light guide plate 305 corresponding to the first reflector 107 has no through hole. The light emitted by the plurality of light emitting elements 109 can travel toward the first reflector 107 through the light guide plate 305, making the first reflector 107 visible, such as Figure 5 shown.

[0042] The backlight module 300 may further include a second reflector 306 disposed on the same layer as the first reflector 107. This can prevent the light provided by the light emitting element 109 from being absorbed by the back plate 110, thereby improving the current efficiency of the display device 3.

[0043] Reference Figure 4 as well as Figure 2B , Figure 4 A schematic diagram showing a display device according to a fourth embodiment of the present invention is shown, Figure 2B A schematic diagram of the first reflector according to the fourth embodiment is shown. The display device 4 includes a backlight module 400, a light modulation module 101 and a camera module 111. The light modulation module 101 is, for example, a liquid crystal display panel, which is used to modulate light from the backlight module 400. The camera module 111 includes a lens assembly LA. The backlight module 400 is located between the camera module 111 and the light modulation module 101. The backlight module 400 includes a first reflector 207, and the first reflector 207 is arranged corresponding to the lens assembly LA. The reflectivity of the first reflector 207 in the visible light band falls within the range of 35% to 65%, and the transmittance in the infrared band is greater than 0%.

[0044] Since the light in the infrared band can penetrate the first reflector 207, the camera module 111 can be an infrared camera module. In a preferred embodiment, the transmittance of the first reflector 207 in the infrared band falls within the range of 30% to 60%. In addition, since the reflectivity of the first reflector 207 in the visible light band falls within the range of 35% to 65%, the visible light from the backlight module 400 can be reflected by the first reflector 207, and the first reflector 207 is visible. Compared with a comparative example in which the first reflector 207 is not provided, the display device 4 of this embodiment can avoid the appearance of a dark hole in the area corresponding to the lens assembly LA. In other words, this area can be in the display area of ​​the display device 4, greatly improving the design margin of the display device 4.

[0045] The first reflector 207 has a body 207B and a plurality of first through holes 207H penetrating the body 207B. The transmittance of the body 207B in the infrared band can be, for example, close to 0%, and the reflectance of the surface of the body 207B in the +Z direction in the visible light band can be greater than or equal to 90%. The vertical projection area of ​​each first through hole 207H on the optical effective area of ​​the lens assembly LA is not zero, and accordingly, the infrared rays incident on the display device 4 can pass through the plurality of first through holes 207H and form an image in the camera module 111. In some embodiments, the opening ratio of the first reflector 207 falls within the range of 30% to 60% (i.e., the transmittance of the first reflector 207 in the infrared band falls within the range of 30% to 60%), or falls within the range of 35% to 65% (i.e., the transmittance of the first reflector 207 in the infrared band falls within the range of 35% to 65%).

[0046] In one embodiment, the display device 4 is implemented as a vehicle display device, the object distance of the lens assembly LA falls within the range of 55 cm to 65 cm, and the full field angle is greater than or equal to 30 degrees. The opening ratio of the first reflector 207 falls within the range of 48% to 52%, the aperture width of each first through hole 207H falls within the range of 0.25 mm to 0.35 mm, and the spacing between adjacent first through holes 207H falls within the range of 0.08 mm to 0.12 mm.

[0047] The backlight module 400 may further include a plurality of light emitting elements 109, a prism sheet 104, a diffuser sheet 103, and a brightness enhancement film 102. The prism sheet 104, the diffuser sheet 103, and the brightness enhancement film 102 are stacked in sequence to form a stacked structure. The stacked structure has an opening 400H that overlaps with the first reflector 207. The backlight module 400 further includes a light guide plate 305. The area of ​​the light guide plate 305 corresponding to the first reflector 207 has no through hole. The light emitted by the plurality of light emitting elements 109 can travel toward the first reflector 207 through the light guide plate 305, making the first reflector 207 visible, such as Figure 6 shown.

[0048] The backlight module 400 may further include a second reflector 306 disposed on the same layer as the first reflector 207. This can prevent the light provided by the light emitting element 109 from being absorbed by the back plate 110, thereby improving the current efficiency of the display device 4.

[0049] In summary, the display device provided by the embodiment of the present invention has a backlight module and a camera module, and a first reflector corresponding to the lens assembly of the camera module is arranged in the backlight module, and the first reflector can be penetrated by infrared light. Therefore, the camera module can be implemented as an infrared camera module, and the display device can be used to display images and take images. In addition, the first reflector can reflect visible light, which can avoid the appearance of dark holes in the display device. Therefore, the first reflector can correspond to the display area of ​​the display device, and is not limited to the non-display area, which greatly increases the design margin of the display device.

Claims

1. A display device, comprising: Backlight module; A light modulation module, used for modulating the light from the backlight module; as well as Camera module, including lens assembly, The backlight module is located between the camera module and the light modulation module, and the backlight module includes a first reflector, which is arranged corresponding to the lens assembly. The reflectivity of the first reflector in the visible light band falls within the range of 35% to 95%, and the transmittance in the infrared band is greater than 0%. 2 . The display device as claimed in claim 1 , wherein the transmittance of the first reflective member in the infrared band falls within a range of 30% to 95%. 3 . The display device as claimed in claim 1 , wherein the first reflective member has a plurality of first through holes, and a vertical projection area of ​​each of the first through holes on the optical effective area of ​​the lens assembly is not zero. 4 . The display device according to claim 3 , wherein an aperture ratio of the first reflective member falls within a range of 30% to 60%. 5 . The display device according to claim 3 , wherein an aperture ratio of the first reflective member falls within a range of 35% to 65%. 6 . The display device according to claim 3 , wherein an aperture ratio of the first reflective member falls within a range of 48% to 52%. 7 . The display device as claimed in claim 3 , wherein the reflectivity of the first reflective member in the visible light band falls within a range of 35% to 65%. 8 . The display device as claimed in claim 3 , wherein the transmittance of the first reflective member in the infrared band falls within a range of 30% to 60%. 9 . The display device as claimed in claim 3 , wherein the backlight module further comprises a second reflective member, the second reflective member has a plurality of second through holes, and the aperture width of each of the second through holes is greater than the aperture width of each of the first through holes.

10. The display device according to claim 9, wherein the first reflective element and the second reflective element are disposed in the same layer. 11 . The display device as claimed in claim 9 , wherein the backlight module further comprises a plurality of light emitting elements, and the plurality of light emitting elements are arranged corresponding to the plurality of second through holes. 12 . The display device according to claim 1 , wherein the reflectivity of the first reflective member in the visible light band falls within a range of 65% to 95%. 13 . The display device as claimed in claim 1 , wherein the transmittance of the first reflective member in the infrared band falls within a range of 60% to 95%. 14 . The display device as claimed in claim 1 , wherein the backlight module further comprises at least one optical layer, the at least one optical layer has an opening, and the opening is arranged to overlap the first reflective element. 15 . The display device as claimed in claim 14 , wherein the backlight module further comprises a plurality of light emitting elements, and the light emitted by the plurality of light emitting elements is reflected by the at least one optical layer and then travels toward the first reflector. 16 . The display device as claimed in claim 14 , wherein the backlight module further comprises a light guide plate, and the first reflective member is located between the light guide plate and the lens assembly. 17 . The display device according to claim 16 , wherein the light guide plate comprises a region corresponding to the first reflective member, and the region has no through hole. 18 . The display device according to claim 16 , wherein the backlight module further comprises a reflective layer, and the reflective layer is disposed on the same layer as the first reflective element.

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