TWI696871B - Display device - Google Patents

Abstract

A display device includes at least two display panels and at least two optical film sets. The at least two display panels include a first display panel and a second display panel, the first display panel is disposed adjacent to the second display panel. The at least two optical film sets include a first optical film set and a second optical film set, the first optical film set corresponds to the first display panel and is disposed under the same, and includes at least one first optical film. The second optical film set corresponds to the second display panel and is disposed under the same, and includes at least one second optical film; wherein the first optical film set is adjacent to the second optical film set, and the at least one first optical film overlaps the at least one second optical film at the adjacent side.

Description

Display device

The invention relates to a display device, in particular to a display device having at least two display areas.

In a display device having multiple display modules and multiple display areas, it is conventional to use multiple backlight modules to match each display module to provide the light source required for display; however, due to differences in backlight modules and display Depending on the module, there will be differences in brightness and color between the display areas. Although a single backlight module can be combined with multiple display modules, but when the size of the backlight module is large, the space required is also large and it is difficult to realize a narrow bezel design.

The present invention provides a display device, which includes at least two optical diaphragm groups to help achieve a narrow bezel design.

The display device provided by the present invention includes at least two display panels and at least two optical film groups. At least two display panels include a first display panel and a second display panel, and the first display panel is disposed adjacent to the second display panel. At least two optical film groups include a first optical film group and a second optical film group, the first optical film group is disposed on the bottom surface side of the first display panel corresponding to the first display panel, and includes at least one first optical Diaphragm. The second optical film group is disposed on the bottom surface side of the second display panel corresponding to the second display panel, and includes at least one second optical film; wherein the first optical film group is adjacent to the second optical film group, and at least A first optical film overlaps at least one second optical film on the adjacent side.

In an embodiment of the invention, the first display panel and the second display panel are arranged side by side, and the first display panel has a first display area, the second display panel has a second display area, and the first display area and The second display areas are separated by a distance D; at least one first optical film and at least one second optical film form an overlapping portion, the overlapping portion has a first width W1, and the first width W1 is not greater than the distance D.

In an embodiment of the invention, the at least one first optical film has a first length L1, at least one second optical film has a second length L2, and the first length L1, the second length L2, the first The width W1 and the distance D conform to the relationship: ((L1+L2)/2) x≦W1≦D.

In an embodiment of the present invention, the above-mentioned at least one first optical film and the at least one second optical film shrink and the overlapping portion further has a second width W2, at least one first optical film and at least one first The two optical films expand and the overlapping portion has a third width W3, and W2<W1<W3.

In an embodiment of the invention, the above display device further includes a backplane and a light source module; at least two optical film sets and a light source module are disposed on the backplane, and the backplane has at least one side wall surrounding at least two optical films Film set.

In an embodiment of the invention, the above display device further includes a cover plate disposed on the top surface of at least two display panels; the cover plate includes at least two light-transmitting areas and at least one light-shielding area surrounding the at least two light-transmitting areas, at least one of which The light-shielding area shields the overlapping portion of at least one first optical film and at least one second optical film.

In an embodiment of the invention, the above light source module includes a light guide element, the light guide element has a light exit surface and a groove, the groove is formed on the light exit surface, at least one first optical film and at least one second optical film The sheet is arranged on the light emitting surface, and the overlapping part corresponds to the groove.

In an embodiment of the invention, the side of the at least one first optical film corresponds to and is fixed to the at least one side wall; the side of the at least one second optical film corresponds to the at least one side wall and It is fixed on at least one side wall.

In an embodiment of the present invention, the above-mentioned display device further includes a frame, the frame is disposed on the back plate and carries at least two display panels; the frame has at least two hollow areas corresponding to at least two display panels, respectively.

In an embodiment of the present invention, the side of at least one of the first optical films further has a first engaging member, the side of at least one second optical film further has a second engaging member, and at least one The side wall has at least two engaging parts, and the first engaging part and the second engaging part are fixed to the at least two engaging parts.

The present invention uses at least two optical diaphragm groups, and the optical diaphragms in one optical diaphragm group overlap with the optical diaphragms in the other optical diaphragm group, thus contributing to the narrow frame design.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following describes the embodiments in detail with reference to the accompanying drawings.

In the following text, the same element will be denoted by the same element symbol. Secondly, in order to clearly present the technical features of this case, the dimensions (eg length, width, thickness, and depth) of elements (eg, layers, films, substrates, regions, etc.) in the drawings will be enlarged in unequal proportions. Therefore, the description and explanation of the following embodiments are not limited to the sizes and shapes presented by the elements in the drawings, but should cover the sizes, shapes, and deviations of the two due to actual manufacturing processes and/or tolerances. For example, the flat surface shown in the drawings may have rough and/or non-linear characteristics, and the acute angle shown in the drawings may be round. Therefore, the elements presented in the drawings in this case are mainly for illustration, not intended to accurately depict the actual shape of the elements, nor are they intended to limit the scope of patent applications in this case.

Second, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship between one element and another element, as shown. It should be understood that relative terms are intended to include different orientations of the device than those shown in the figures. For example, if the device in one drawing is turned over, the element described as being on the "lower" side of the other element will be oriented on the "upper" side of the other element. Thus, the exemplary term "lower" may include "lower" and "upper" orientations, depending on the particular orientation of the drawings. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "below" or "below" can include an orientation of above and below.

1-2 are a schematic cross-sectional view and a schematic top view of a display device according to an embodiment of the invention. As shown in FIGS. 1-2, the display device 10 includes at least two display panels 100. In this embodiment, at least two display panels 100 include a first display panel 100a and a second display panel 100b, and the first display panel 100a is disposed adjacent to the second display panel 100b. The areas and/or sizes of the first display panel 100a and the second display panel 100b may be equal or different.

Each display panel 100 such as the first display panel 100a and the second display panel 100b may include a first substrate 110, a second substrate 120, and a display medium layer (not shown), and the upper and lower surfaces of the display panel 100 may be Optical sheets 700, such as polarizers, are provided separately. The display medium layer is sealed between the first substrate 110 and the second substrate 120, for example. The first substrate 110 and the second substrate 120 may include a light-transmitting substrate, such as a glass substrate, a plastic substrate, or a quartz substrate. In one embodiment, the display panel 100 is, for example, a liquid crystal display panel, wherein the first substrate 110 includes a color filter layer, the second substrate 120 includes a pixel array and peripheral circuits, and the display medium layer includes a plurality of liquid crystal molecules . The present invention does not limit the types of the display panel 100.

The display device 10 further includes at least two optical diaphragm groups 200. In this embodiment, at least two optical film groups 200 include a first optical film group 200a and a second optical film group 200b. The first optical film group 200a is disposed under the first display panel 100a corresponding to the first display panel 100a, that is, on the bottom surface 101 side of the first display panel 100a, and includes at least one first optical film 210. The second optical film group 200b is disposed under the second display panel 100b corresponding to the second display panel 100b, that is, the bottom surface 101 side of the second display panel 100b, and includes at least one second optical film 220, wherein the first optical The diaphragm group 200a is adjacent to the second optical diaphragm group 200b, and the at least one first optical diaphragm 210 overlaps the at least one second optical diaphragm 220 on the adjacent side. In one embodiment, the first optical film group 200a includes a plurality of first optical films 210, the second optical film group 200b includes a plurality of second optical films 220, and each first optical film 210 It overlaps with the adjacent second optical film 220 respectively. It should be noted that the sizes of the first optical diaphragm group 200a and the second optical diaphragm group 200b may be equal or different. For example, according to the first display panel 100a and the second display panel 100b with different sizes, the area of at least one first optical film 210 in the first optical film group 200a may be different from at least one of the second optical film group 200b The area of a second optical film 220.

The first optical film 210 and the second optical film 220 may be, for example, diffusion films and brightness enhancement films. In one embodiment, the first optical film group 200a includes a diffusion sheet and a brightness enhancement film in sequence from the side adjacent to the first display panel 100a, and the second optical film group 200b includes diffusion from the side adjacent to the second display panel 100b Sheet, brightness enhancement film, and the diffusion sheet of the first optical diaphragm group 200a overlaps the diffusion sheet of the second optical diaphragm group 200b, and the brightness enhancement film overlaps the brightness enhancement film of the second optical diaphragm group 200b.

As shown in FIGS. 1-2, in this embodiment, the first display panel 100a and the second display panel 100b are adjacent and juxtaposed, and the first display panel 100a has a first display area 150a and a surrounding display area 150a Border area (not shown). The second display panel 100b has a second display area 150b and a frame area (not shown) surrounding the second display area 150b, wherein the area and/or size of the second display area 150b and the first display area 150a may be equal or different . The first display area 150a and the second display area 150b are spaced apart by a distance D, and the first optical film group 200a and the second optical film group 200b are adjacent to the first optical film 210 and the second The optical films 220 overlap. The overlapping portion P formed by the first optical film 210 and the second optical film 220 has a first width W1, and the first width W1 is not greater than the distance D, that is, W1≦D.

According to an embodiment of the invention, at least one first optical film 210 has a first length L1, and at least one second optical film 220 has a second length L2, wherein the first optical film 210 and the second optical film 220 The areas may be equal or unequal, and the first length L1 and the second length L2 may be equal or unequal. It should be noted that at least one first optical film 210 and at least one second optical film 220 have expansion and contraction characteristics. When the first optical film 210 and the second optical film 220 are thermally expanded, the area of the optical film becomes larger and the sides grow. The aforementioned first width W1 is the side length of the overlapping portion P of the at least one first optical film 210 and the at least one second optical film 220 without expansion or contraction. The relationship between the first length L1, the second length L2, and the first width W1 conforms to the following formula: ((L1+L2)/2) χ≦W1≦D. That is, the average length ((L1+L2)/2) of the at least one first optical film 210 and the at least one second optical film 220 multiplied by the coefficient χ is less than or equal to the first width W1. The coefficient χ may be related to the expansion and contraction coefficient of the optical film. In one embodiment, χ is 1/100. It should be noted that this embodiment does not limit the optical film of the display device 100, and different optical films have different expansion and contraction coefficients. For example, the overlapped portion P and the degree of overlap can be made larger as the coefficient of expansion and contraction is larger, so that when the optical film shrinks, the first optical film 210 and the second optical film 220 can maintain overlapping.

Presented above. According to an embodiment of the present invention, the average length of the at least one first optical film 210 and at least one second optical film 220 may be the diffusion film of the first optical film group 200a and the second optical film group 200b The average length of the diffusion film, the average length of the brightness enhancement film of the first optical film group 200a and the brightness enhancement film of the second optical film group 200b.

According to a state of this embodiment, as shown in FIG. 3, the first optical film 210 and the second optical film 220 contract with cold, and the area of the first optical film 210 and the second optical film 220 may become smaller and smaller The side length is shortened, that is, the width of the overlapping portion becomes the second width W2, and the second width W2 is smaller than the first width W1. According to another state of this embodiment, as shown in FIG. 4, the first optical film 210 and the second optical film 220 are thermally expanded, and the area of the first optical film 210 and the second optical film 220 may become large and The side length increases, that is, the width of the overlapping portion becomes the third width W3, and the third width W3 is greater than the first width W1. Since the first optical film 210 and the second optical film 220 overlap and re-expand, the space occupied by the expansion is less. That is to say, the first optical film 210 expands to the space where the second optical film 220 was originally configured, and the second optical film 220 expands to the space where the first optical film 210 was originally configured, thus reducing the additional space occupied degree. In addition, compared with the use of a single larger-area optical film group, the optical films of at least two optical film groups 200 in the embodiment of the present invention, such as the first optical film 210 and the second optical film 220, have a larger area. Small, so the area and side length changes caused by expansion are small, which also helps to save space.

The display device 10 further includes a backplane 300 and a light source module 400. The light source module 400 is used to provide at least two display panels 100 with light sources required for display. In other words, the first display panel 100a and the second display panel 100b can be provided with light sources by the same light source module 400. As shown in FIGS. 1 and 3-4, the light source module 400 and the first optical film group 200 a and the second optical film group 200 b are disposed on the back plate 300. The backplane 300 includes a bottom plate 310 and at least one side wall 320. At least one side wall 320 surrounds the first optical film group 200a and the second optical film group 200b.

According to an embodiment of the present invention, the side of at least one first optical film 210 corresponds to and is fixed to at least one side wall 320 of the back plate 300, and the side of at least one second optical film 220 also corresponds to the back At least one side wall 320 of the board 300 is corresponding to and fixed to the at least one side wall 320. In one embodiment, at least one first optical film 210 and at least one second optical film 220 are respectively fixed to two opposite side walls 320 of the backplane 300. As shown in FIG. 5, the side 2100 of at least one first optical film 210 is fixed to the side wall 320a, and the side 2200 of at least one second optical film 220 is fixed to the side wall 320b, and the side wall 320a is opposite to the side wall 320b. The first optical film 210 and/or the second optical film 220 may also be fixed to the side walls 320c and 320d. The fixation can be performed by means such as convex parts and clamping slots, hole parts and convex columns. The invention does not limit the fixing method between the optical film and the back plate 300. As shown in FIG. 5, the side 2100 of at least one first optical film 210 further has a first engaging member 215, the side 2200 of at least one second optical film 220 further has a second engaging member 225, and the side wall 320a and 320b have at least two engaging portions 325. When the first optical film group 200a and the second optical film group 200b are disposed on the back plate 300, the first engaging member 215 of the first optical film 210 and the second engaging member of the second optical film 220 225 corresponds to the positions of the engaging portions 325 and engages with each other.

As described above, the side wall 320 limits the degree of displacement of the first optical film 210 and the second optical film 220 relative to it and the back plate 300. Even if the first optical film 210 and the second optical film 220 contract or expand and reciprocate, the fixation helps maintain the relative positions of the first optical film 210 and the second optical film 220 to the side wall 320 and the back plate 300 Position, and further maintain the relative positions of the first optical film 210 and the first display panel 100a, and the second optical film 220 and the second display panel 100b. Furthermore, since the first optical film 210 and the second optical film 220 can expand toward the space already occupied by each other, the first optical film 210 and the second optical film 220 can be expanded in the backplane 300 Reserve relatively little extra space or leave no extra space. For example, allowing the first optical film 210 and the second optical film 220 to be disposed near the side wall 320, and also allowing a smaller internal space of the backplane 300, which helps to achieve a narrow bezel design.

In this embodiment, the light source module 400 includes a light source (not shown) and a light guide element 450. The light guide element 450 has a light exit surface 4500 that faces the first display panel 100a and the second display panel 100b, and the first optical film group 200a and the second optical film group 200b are disposed on the light exit surface 4500 side. The light guide element 450 may further have a groove 460 formed on the light exit surface 4500. The width of the groove 460 is preferably larger than the third width W3. The overlapping portion P of the first optical film 210 and the second optical film 220 may correspond to the groove 460, and the groove 460 may accommodate the overlapping portion P of the first optical film 210 and the second optical film 220 , And can be used to slow down the film overlap and relatively higher than the height of the light-emitting surface 4500. Furthermore, it helps to reduce the thickness of the display device 10.

The display device 10 may further include a frame 600. The frame 600 is disposed on the back plate 300 and carries at least two display panels 100. The frame member 600 may have a first hollowed-out area 610 corresponding to the first display area 150a of the first display panel 100a, and a second hollowed-out area 620 corresponding to the second display area 150b of the second display panel 100b. Furthermore, the frame member 600 can also fix the first optical film group 200a and the second optical film group 200b. The body of the frame 600 can form a groove 660, and the groove 660 can also correspond to the overlapping portion P of at least one first optical film 210 and at least one second optical film 220, as a space for accommodating the overlapping portion P . For the method of fixing the optical film by the frame member 600, reference may be made to the aforementioned method of fixing the optical film and the back plate 300.

As shown in FIGS. 1-4, the display device 10 of this embodiment further includes a cover 500 disposed on at least two display panels 100. The cover plate 500 can be attached to the top surface 102 of at least two display panels 100, but the present invention does not limit the manner in which the cover plate 500 and at least two display panels 100 are fixed to each other. Furthermore, the frame member 600 can also be a cover 500 configured with at least two display panels 100. The cover 500 serves as a protective cover, and may be a touch panel. The cover plate 500 includes at least two light-transmitting regions 510 and at least one light-shielding region 520 surrounding the at least two light-transmitting regions 510, wherein the light-shielding region 520 may be formed by printing a light-shielding material 5000, for example. The light-transmitting area 510 corresponds to the first display area 150a and the second display area 150b, and the light-shielding area 520 corresponds to the frame area and shields the optical film group 200 and the light source module outside the first display area 150a and the second display area 150b 400 parts.

As mentioned above. The first display area 150a and the second display area 150b are spaced apart by a distance D. The interval between the first display area 150a and the second display area 150b may correspond to the light shielding area 520. According to an embodiment of the invention, the width of the light-shielding area 520 may be equivalent to the distance D. Below the interval, at least one first optical film 210 overlaps at least one second optical film 220, that is, an overlapping portion of at least one first optical film 210 and at least one second optical film 220 P is located below the light-shielding area 520 and is shielded by the light-shielding area 520. According to an embodiment of the invention, the width of the overlapping portion P, such as the first width W1, is less than or equal to 1/10 of the width of the light-shielding region 520, but not limited to this. Even if at least one first optical film 210 or at least one second optical film 220 is slightly bent due to the overlap, the light-shielding area 520 can be effectively shielded.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the appended patent application.

10: display device 100: display panel 100a: the first display panel 100b: second display panel 101: underside 102: top surface 110: the first substrate 120: second substrate 150a: the first display area 150b: second display area 200: Optical diaphragm group 200a: the first optical diaphragm group 200b: second optical diaphragm group 210: the first optical diaphragm 2100: Side 215: The first snap fitting 220: second optical diaphragm 2200: side 225: Second snap fitting 300: backplane 310: bottom plate 320, 320a, 320b, 320c, 320d: side wall 325: Engagement Department 400: light source module 450: light guide element 4500: light side 460: Groove 500: cover 510: Translucent area 520: shading area 5200: shading material 600: frame 610: The first hollow area 620: Second cutout area 660: groove 700: Optical diaphragm P: overlapping parts D: distance W1: first width W2: second width W3: third width L1: the first length L2: second length

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention. FIG. 2 is a schematic top view of the embodiment shown in FIG. 1. 3 is a schematic cross-sectional view of another state of the embodiment shown in FIG. 1. 4 is a schematic cross-sectional view of yet another state of the embodiment shown in FIG. 1. FIG. 5 is a partial schematic top view of the embodiment shown in FIG. 1.

10: display device

100: display panel

100a: the first display panel

100b: second display panel

101: underside

102: top surface

110: the first substrate

120: second substrate

150a: the first display area

150b: second display area

200: Optical diaphragm group

200a: the first optical diaphragm group

200b: second optical diaphragm group

210: the first optical diaphragm

220: second optical diaphragm

300: backplane

310: bottom plate

320: sidewall

400: light source module

450: light guide element

4500: light side

460: Groove

500: cover

510: Translucent area

520: shading area

5200: shading material

600: frame

610: The first hollow area

620: Second cutout area

660: groove

700: Optical sheet

P: overlapping parts

D: distance

W1: first width

L1: the first length

L2: second length

Claims (10)

A display device includes: at least two display panels, including a first display panel and a second display panel, the first display panel is adjacent to the second display panel and arranged side by side, wherein the first display panel has a first A display area, the second display panel has a second display area, and the first display area and the second display area are separated by a distance D; and at least two optical film groups, including a first optical film group and A second optical film group, the first optical film group corresponding to the first display panel is disposed on a bottom surface side of the first display panel, and includes at least a first optical film, the second optical film The group corresponds to the second display panel and is disposed on one bottom side of the second display panel, and includes at least one second optical film; wherein the first optical film group is adjacent to the second optical film group, and the At least one first optical film overlaps the at least one second optical film on the adjacent side and forms an overlapping portion, the overlapping portion has a first width W1, and the first width W1 is not greater than the distance D. The display device as described in item 1 of the patent application range, wherein the at least one first optical film has a first length L1, the at least one second optical film has a second length L2, and the first length L1 , The second length L2, the first width W1 and the distance D conform to the relationship: ((L1+L2)/2) χ≦W1≦D. The display device as described in item 2 of the patent application scope, wherein χ is 1/100. The display device as described in item 1 of the patent application range, wherein the at least one first optical film and the at least one second optical film contract and the overlapping portion further has a second width W2, the at least one first The optical film and the at least one second optical film are expanded and the overlapping portion further has a third width W3, and W2<W1<W3. The display device as described in item 1 of the patent application scope further includes a backplane and a light source module; the at least two optical film sets and the light source module are disposed on the backplane, and the backplane has at least one side wall Surround the at least two optical diaphragm groups. The display device as described in item 1 of the patent application scope further includes a cover plate disposed on one top surface of the at least two display panels; the cover plate includes at least two light-transmitting areas and at least one light-shielding area surrounding the at least two light-transmitting areas Area, wherein the at least one light-shielding area shields the overlapping portion of the at least one first optical film and the at least one second optical film. The display device as described in item 5 of the patent application range, wherein the light source module includes a light guide element, the light guide element has a light exit surface and a groove, the groove is formed in the light exit surface, the at least one first An optical film and the at least one second optical film are disposed on the light exit surface and the overlapping portion corresponds to the groove. The display device according to item 5 of the patent application scope, wherein one side of the at least one first optical film corresponds to and is fixed to the at least one side wall; one of the at least one second optical film The side edge corresponds to the at least one side wall and is fixed to the at least one side wall. The display device as described in item 5 of the patent application scope further includes a frame member disposed on the back plate and carrying the at least two display panels; the frame member has at least two hollow areas corresponding to at least two displays panel. The display device as described in item 8 of the patent application range, wherein the side of the at least one first optical film further has a first engaging member, and the side of the at least one second optical film further has a The second engaging part, and the at least one side wall has at least two engaging parts, and the first engaging part and the second engaging part are fixed to the at least two engaging parts.

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