TWI726631B - Display device and splice display system - Google Patents

Abstract

A display device and a splice display system are provided. The display device includes a display unit and at least two light guide modules. The display unit includes a display panel having a display surface and a frame disposed around the display panel. The light guide modules dispose on the display surface and include at least one light guide component. The light guide component has an incident plane and an emissive plane which are parallel to the display surface, and first and second inclined planes which are non-parallel to the display surface. The first inclined plane of one light guide component which is closest to the frame is adjacent to the frame. The first inclined planes of the others light guide components bear on the second inclined planes of the light guide adjacent thereof. In a direction from the frame toward a center of the display surface, vertical distances between the incident planes and the emissive planes of the light guide modules gradually decreases. Thereby, the display device improves the problem of which the frames are obviously visible when the display devices are spliced.

Description

Display device and splicing display system

The present invention relates to the technical field of a display device. Specifically, the present invention relates to a display device and a splicing display system that can improve the problem that the frame of each display device is clearly visible after multiple display devices are spliced.

In recent years, in order to maximize the screen size, the concept and application of splicing multiple display panels has gradually emerged.

Existing display splicing TV walls generally have the problem of discontinuity of display pictures at the junction between adjacent display panels due to frame splicing, which has become a major problem in visual taste. In order to reduce the discontinuous visual problem of the display screen, the common practice in the industry is to switch to ultra-narrow bezel displays. However, such displays are usually very expensive, and the bezel is reduced to a certain degree as the limit, and it is not easy to shrink again. This brings about the problem that the visual quality is not easy to improve.

In summary, the inventor of the present invention has designed a display device and a splicing display system to improve on the shortcomings of the existing technology, thereby enhancing the industrial application and utilization.

In view of the above-mentioned problems of the prior art, the purpose of the present invention is to provide a display device and a spliced display system to improve the problem that the frame of each display device is clearly visible after multiple display devices are spliced.

According to the above objective, the present invention provides a display device, which includes a display unit and at least two light guide groups. The display unit includes a display panel and a frame, the display panel has a display surface, and the frame is located around the display panel. At least two light guide groups are arranged on the display surface and adjacent to the frame. Each light guide group includes at least one light guide; the light guide has a parallelogram structure and has an incident surface and an exit surface parallel to the display surface, and a first inclined surface and a second inclined surface that are not parallel to the display surface. Among them, the first inclined surface and the second inclined surface are mirror surfaces, the first inclined surface of the light guide member of the light guide group closest to the frame is adjacent to the frame, and the first inclined surface of the light guide member of the remaining light guide groups is attached to the adjacent The second slope of the light guide. Wherein, in the direction from the frame to the center of the display surface, the vertical distance from the entrance surface to the exit surface of each light guide group gradually decreases.

Preferably, the external angle between the incident surface and the first inclined surface may be 30 degrees to 60 degrees.

In view of the above, the external angle between the incident surface and the first inclined surface may be 45 degrees.

Preferably, the ratio of the width of the incident surface of the light guide group closest to the frame to the width of the frame may be 0.6-1.

Preferably, in the direction from the frame to the center of the display surface, the vertical distance from the incident surface to the exit surface of the nth light guide group and the vertical distance from the incident surface to the exit surface of the n+1th light guide group may have Height difference, the height difference is 1/15 to 1/2 of the vertical distance from the incident surface to the exit surface of the n-th light guide group, and n is a positive integer.

Preferably, a non-display area is formed at the junction of the exit surfaces of each light guide group, and the width of each non-display area between each light guide group may be the same.

Preferably, the distance between the non-display areas may be 0.5 mm to 100 mm.

Preferably, the ratio of the total width of the non-display areas to the width of the border may be 0.6-1.

Preferably, the at least one light guide group includes a plurality of light guide members, and the vertical distance from the incident surface to the exit surface of each light guide member is the same.

According to the above objective, the present invention further provides a splicing display system, which includes the aforementioned display device, wherein the display devices are spliced with each other, and the light guide group is adjacent to the frame between the display device and another display device.

The display device and splicing display system of the present invention can at least have the following advantages:

(1) The display device and the splicing display system of the present invention are achieved by arranging a light guide group with a predetermined structure on the display surface. Thereby, the display device and the splicing display system of the present invention can make the display device have the visual advantage that the frame is divided or faded to almost no frame.

(2) The display device and the splicing display system of the present invention are achieved by arranging a light guide group with a predetermined structure on the display surface. Thereby, the display device and the spliced display system of the present invention can reduce the manufacturing cost of manufacturing a large-size spliced display system.

1: display device

10: Display unit

11: Display panel

111: display surface

12: Border

20: Light guide group

21: Light guide

211: incident surface

212: exit surface

213: first slope

214: second slope

3: Splicing display system

A: The outer angle between the incident surface and the first inclined surface

B: Non-display area

C: Display the center of the surface

D: The distance between non-display areas

h ₁ , h ₂ : the vertical distance from the incident surface of the light guide to the exit surface

HD ₁ : Height difference

L: image light

W1: the width of the border

W2: the width of the incident surface

W3: The width of the non-display area

In order to make the above objectives, technical features, and gains after actual implementation more obvious and easy to understand, a more detailed description will be given below with a preferred implementation example to assist the corresponding related drawings.

FIG. 1 is a schematic diagram of the first embodiment of the display device of the present invention.

FIG. 2 is a first schematic diagram of the light guide group of the first embodiment of the display device of the present invention.

FIG. 3 is a second schematic diagram of the light guide group of the first embodiment of the display device of the present invention.

FIG. 4 is a schematic diagram of the second embodiment of the display device of the present invention.

FIG. 5 is a schematic diagram of the third embodiment of the display device of the present invention.

FIG. 6 is a schematic diagram of the fourth embodiment of the display device of the present invention.

Figure 7 is a schematic diagram of the splicing display system of the present invention.

In order to understand the technical features, content and advantages of the present invention as well as the effects that can be achieved, the present invention is described in detail with the accompanying drawings and in the form of embodiment expressions as follows, and the figures used therein are only For the purpose of illustration and auxiliary description, it is not necessarily the true scale and precise configuration after the implementation of the present invention. Therefore, the proportion and configuration relationship of the attached drawings should not be interpreted, and the scope of rights of the present invention in actual implementation should not be interpreted. Narrate.

In the drawings, the thickness or width of the panel, light guide, etc. are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a light guide is referred to as being "on" or "connected to" or "disposed on" another element, it can be directly on or connected to another element, Or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements. As used herein, "connection" or "setting" can refer to a physical and/or electrical connection or setting. In addition, if the terms "first", "second", and "third" are used for descriptive purposes only, they cannot be understood as indicating or implying relative importance or their order relationship.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have meanings commonly understood by ordinary knowledge in the technical field to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having There are meanings consistent with their meanings in the context of related technologies and the present invention, and will not be interpreted as idealized or excessively formal meanings unless explicitly defined as such herein.

Please refer to FIGS. 1 to 3, which are the schematic diagrams of the first embodiment of the display device of the present invention and the first and second schematic diagrams of the light guide group, respectively. The display device 1 of the present invention can be applied to a computer monitor, a television, a monitor, or a mainframe for a car, especially for splicing a plurality of flat display devices, curved display devices, or a combination thereof to form a display system. As shown in the figure, the display device 1 of the present invention includes a display unit 10 and at least two light guide groups 20.

As shown in FIG. 1, the display unit 10 includes a display panel 11 and a frame 12. The display panel 11 has a display surface 111, and the frame 12 is located around the display panel 11. Among them, the display panel 11 and the frame 12 can be the display panel 11 and the frame 12 well known to those skilled in the art, and the assembly method can also be the assembly method known to those skilled in the art. At least two light guide groups 20 are disposed on the display surface 111 and adjacent to the frame 12. Each light guide group 20 includes at least one light guide 21. In this embodiment, the number of the light guide groups 20 is two as an exemplary aspect, and the number of the light guide 21 is one as an exemplary aspect, but it is not limited thereto.

As shown in Figure 2, the light guide 21 can be a light-transmitting material, such as plastic, glass, etc. It can be made into multiple separate light guides 21 or multiple light guides through an injection molding process. The light member 21 is formed as a whole. The light guide 21 has a parallelogram structure, and has an incident surface 211 and an output surface 212 opposite and parallel to the display surface 111, and a first inclined surface 213 and a second inclined surface 214 opposite to and non-parallel to the display surface 111. Among them, the first inclined surface 213 and the second inclined surface 214 are mirror surfaces. In addition, the incident surface 211 of the light guide 21 bears against the display surface 111, and the first inclined surface 213 is at a position adjacent to the frame 12.

Please refer to Figure 1 and Figure 2 at the same time. With the above-mentioned configuration of the light guide 21, the light guide 21 can receive the image light L emitted by the display surface 111 through the incident surface 211, and the second inclined surface 214 reflects the image light L to the first inclined surface 213, and then the image light L is reflected to the exit surface 212 and leaves the light guide 21 from the exit surface 212. Therefore, the image light L can pass through the light guide 21 in a predetermined path.

More specifically, among the light guide groups 20, the first inclined surface 213 of the light guide 21 closest to the frame 12 of the light guide group 20 closest to the frame 12 is located above the frame 12. The first inclined surface 213 of the light guide member 21 of the remaining light guide group 20 is a second inclined surface 214 that abuts on the adjacent light guide member 21. In particular, in the direction from the frame 12 to the center C of the display surface, the vertical distance between the incident surface 211 of each light guide group 20 and the exit surface 212 is gradually reduced. For example, in Figure 1, the first light guide The vertical distance from the incident surface 211 to the exit surface 212 of the _{second light guide 21 is h 1} , and the vertical distance from the incident surface 211 to the exit surface 212 of the second light guide 21 _{is h 2.} A light guide 21 is far away from the frame 12, where h ₁ >h ₂ .

As shown in Figure 3. Among them, the vertical distance between the incident surface 211 of each light guide group 20 and the exit surface 212 is gradually reduced. Preferably, the distance from the frame 12 to the center C of the display surface is the distance between the first light guide group 20 and the center C of the display surface. The vertical distance between the entrance surface 211 and the exit surface 212 and the vertical distance between the entrance surface 211 and the exit surface 212 of the second light guide group 20 have a height difference HD ₁ , and the height difference HD ₁ is the first light guide group 20 1/15 to 1/2 of the vertical distance from the incident surface 211 to the exit surface 212, and n is a positive integer.

For example, the light guide groups 20 are respectively the first group, the second group, the third group,..., the nth group, and the light guide 21 of each light guide group 20 has an incident surface 211 to an exit surface 212 The vertical distance is represented by h ₁ , h ₂ , h ₃ ,..., h _{n respectively} . In other words, h ₁ -h ₂ =HD ₁ =h ₁ ×(1/15~1/2), h ₂ -h ₃ =HD ₂ =h ₂ ×(1/15~1/2),... .h _(n-1) -h _n =HD _n-1 =h _(n-1) ×(1/15~1/2).

In the display device 1 of the present invention, the light guide group is arranged on the display surface. In this way, the display device can have the advantage of being divided or dimmed to be almost borderless. Moreover, the display device 1 of the present invention saves the manufacturing cost significantly compared with a general thin/narrow bezel display.

It should be particularly noted that the ratio of the width W2 of the incident surface of the light guide group 20 closest to the frame 12 to the width W1 of the frame is preferably about 0.6 to 1. In other words, the ratio of the light guide group 20 closest to the frame 12 The width W2 of the incident surface and the width W1 of the frame (ie, W2/W1) are preferably 0.6~1. In addition, the external angle A between the incident surface 211 and the first inclined surface 213 may preferably be 30 degrees to 60 degrees, and more preferably may be 45 degrees. With the configuration of the preferred width of the incident surface 211 and the preferred angle between the incident surface 211 and the first inclined surface 213, the image light L can be appropriately shifted to a position above the frame 12 to pass through the plurality of light guide groups 20 to divide or dilute the problem of discontinuity of the display screen that may be formed by the frame 12. As shown in Figure 2, in this embodiment, the external angle A between the incident surface 211 and the first inclined surface 213 is, for example, 45 degrees, and W1=W2, but this should not be a limitation.

Please refer to FIG. 4, which are schematic diagrams of the second embodiment of the display device of the present invention. In this embodiment, the configuration or connection relationship of the components is roughly similar to the foregoing, and the similarities are not repeated here.

It is worth mentioning that, as shown in the figure, in this embodiment, the number of light guide groups 20 is three as an exemplary aspect, and the number of light guide members 21 of each light guide group 20 is one as an exemplary aspect. Same, but not limited to this.

Wherein, a non-display area B can be formed at the junction of the exit surface 212 of each light guide group 20. As shown in Figure 4, the vertical projection of the non-display area B on the display surface 111 is located between the vertical projections of the exit surface 212 of the two adjacent light guide groups 2 on the display surface 111, and the non-display area B is on the display surface. The vertical projection of 111 is connected with the vertical projection of the exit surface 212 of the light guide group 2 on the display surface 111 but does not overlap. Preferably, the width W3 of each non-display area B between the light guide groups 20 is the same, but it is not limited to this, and the width W3 of each non-display area B between the light guide groups 20 may also be different. And, preferably, the distance D between the non-display areas B is preferably 0.5 mm to 100 mm.

In the display device 1 of the present invention, through the aforementioned configuration, the frame 12 can be divided or faded into a plurality of narrow non-display areas B, and the design of the width W3 of these non-display areas B and the distance D between them can be Produce visual effects that are not easy to detect by the human eye.

Please refer to FIG. 5, which are respectively schematic diagrams of the third embodiment of the display device of the present invention. In this embodiment, the configuration or connection relationship of the components is roughly similar to the foregoing, and the similarities are not repeated here.

It is worth mentioning that, as shown in the figure, in this embodiment, the number of light guide groups 20 is four as an exemplary aspect, and the number of light guide members 21 of three of the light guide groups 20 is one as In an exemplary aspect, the number of light guide members 21 of one light guide group 20 is two as an exemplary aspect, but it is not limited thereto.

Since the vertical distance between the entrance surface 211 and the exit surface 212 of each light guide group 20 is a gradually reduced configuration, in order to prevent adjacent non-display areas B from being too close, the light guide 21 of the light guide group 20 is preferably It can be configured to be plural. As shown in Figure 5, the rightmost light guide group 20 has two light guides 21, and the vertical distances from the incident surface 211 to the exit surface 212 of the two light guides 21 are the same.

By configuring the number of light guides 21 of at least one of the light guide groups 20 as a plurality of configurations, even if the size of the light guide 21 is gradually reduced in the direction from the frame 12 to the center C of the display surface, it can still maintain a proper size. The distance D between the non-display areas B.

Please refer to FIG. 6, which are schematic diagrams of the fourth embodiment of the display device of the present invention. In this embodiment, the configuration or connection relationship of the components is roughly similar to the foregoing, and the similarities are not repeated here.

As shown in the figure, the main difference in this embodiment is that in this embodiment, the number of light guide groups 20 is six as an exemplary aspect, and the number of light guide members 21 of three light guide groups 20 is The number is one as an exemplary aspect, the number of the light guide 21 of one light guide group 20 is two as an example aspect, and the number of the light guide 21 of one light guide group 20 is five as an example aspect. Not limited to this.

That is to say, this embodiment is an extension of the previous embodiment, mainly to show that in order to maintain a better spacing between the non-display areas B between the light guide groups 20 (between the non-display areas B Under the requirements such as the distance D), the number of the light guide 21 of the light guide group 20 may not be particularly limited to one, two, etc.

It is worth mentioning that, preferably, the total width of the width W3 of the non-display areas B may be equal to or less than the width W1 of the frame 12. Preferably, the sum of the width W3 of the non-display areas B and the frame The ratio of the width W1 of 12 may be 0.6~1. Thereby, the image light L can be appropriately shifted to divide or dilute the frame 12 into a plurality of narrower non-display areas B, and the width of these non-display areas B and the distance between them can be difficult to detect by the human eye. The visual effect is improved, and the problem of discontinuous display pictures that may be formed when splicing the display device is improved.

Please refer to Fig. 7, which are respectively schematic diagrams of the splicing display system of the present invention. In this embodiment, the configuration or connection relationship of the components is roughly similar to the foregoing, and the similarities are not repeated here.

As shown in the figure, the splicing display system 3 of the present invention mainly includes at least two display devices 1 in the foregoing embodiments, where appropriate and without conflict. Among them, the display devices 1 are spliced with each other, and the light guide group 20 of each display device 1 is disposed adjacent to the frame 12 between the display device 1 and another display device 1.

Under the above configuration, since the display device 1 can be spliced into a spliced display system 3 with a large display area, the boundary between multiple display devices can be divided or faded, thereby improving the display quality of the spliced display system 3. Incidentally, the display devices 1 can be glued, locked, etc., which are well known to those with ordinary knowledge in the technical field, and will not be repeated here.

In summary, the display device and splicing display system of the present invention are achieved by arranging the light guide group on the display surface. As a result, a single display device or a spliced display system after splicing multiple display devices can improve the discontinuity, awkwardness, and cutting feeling of the frame or the splicing junction, so that the display device and the spliced display system of the present invention are better than those of the spliced display system. The consistency and coordination of the image can be improved, thereby enhancing the display quality of the display device. Moreover, the display device and the splicing display system of the present invention also have a cost advantage by using the light guide group.

The above description is only illustrative, and not restrictive. Any equivalent modifications or alterations that do not depart from the spirit and scope of the present invention should be included in the scope of the appended patent application.

1: display device

10: Display unit

11: Display panel

111: display surface

12: Border

20: Light guide group

21: Light guide

C: Display the center of the surface

L: image light

Claims (9)

A display device comprising: a display unit comprising a display panel and a frame, the display panel having a display surface, the frame is located around the display panel; and at least two light guide groups, the at least two The light guide group is arranged on the display surface and is adjacent to the frame, each of the light guide groups includes at least one light guide, the light guide is in a parallelogram structure and has an incident surface and an exit surface parallel to the display surface , And a first slope and a second slope that are not parallel to the display surface, the first slope and the second slope are mirror surfaces, and the first slope of the light guide member of the light guide group closest to the frame An inclined surface is adjacent to the frame, and the first inclined surface of the light guide member of the remaining light guide group is attached to the second inclined surface of the adjacent light guide member; wherein, from the frame to the center of the display surface In the direction of, the vertical distance from the incident surface to the exit surface of each light guide group is gradually reduced; wherein, the external angle between the incident surface and the first inclined surface is 30 degrees to 60 degrees. The display device according to claim 1, wherein the external angle between the incident and the inclined plane is 45 degrees. The display device according to claim 1, wherein the ratio of the width of the incident surface of the light guide group closest to the frame to the width of the frame is 0.6 to 1. The display device according to claim 1, wherein in the direction from the frame to the center of the display surface, the vertical distance from the incident surface to the exit surface of the nth light guide group is equal to that of the n+1th guide group. The vertical distance from the incident surface to the exit surface of the light group has a height difference, and the height difference is 1/15 to 1/2 of the vertical distance from the incident surface to the exit surface of the nth light guide group, n Is a positive integer. The display device according to claim 1, wherein a non-display area is formed at the junction of the exit surface of each light guide group, and the width of each non-display area between each light guide group is the same. The display device according to claim 5, wherein the distance between the non-display areas is 0.5 mm to 100 mm. The display device according to claim 5, wherein the ratio of the total width of the non-display areas to the width of the frame is 0.6-1. The display device according to claim 1, wherein at least one of the light guide groups includes a plurality of light guide members, and the vertical distance from the incident surface to the exit surface of each light guide member is the same. A splicing display system, comprising a plurality of display devices as claimed in any one of claims 1 to 8, wherein each of the display devices is spliced with each other, and the at least two light guide groups are adjacent to the display device and the other The border between the display devices.

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