TWI494608B - Edge-type three-dimensional image display device - Google Patents

Description

Lateral stereoscopic image display device

The present invention provides an edge-lit stereoscopic image display device that is related to an optical component.

As shown in FIG. 1 , the image display device 10 is mainly used in an advertising light box, and the image display device 10 is provided with a plurality of light sources 12 on the bottom surface 111 of a hollow frame 11 . An optical film 13 having a pattern is disposed perpendicularly to the direction of each of the light sources 12, and the light is emitted from the light source 12 to cause the pattern of the optical film 13 to appear; however, due to the light source 12 of the image display device 10 and the optical film 13 is disposed in the vertical direction and belongs to a direct type light box. Therefore, a distance must be maintained between the light source 12 of the image display device 10 and the optical film 13 to ensure that the light emitted from the light source 12 can be uniformly transmitted by the optical The diaphragm 13 emits light, and if the distance between the light source 12 and the optical film 13 is too small, a significant bright and dark portion occurs; thus, the image display device 10 that causes the direct-lit light is not easily reduced in thickness and is difficult to be formed. In view of this, the inventors have devoted themselves to research and deeper conceiving, and after several trials and developments, finally invented a side-light stereoscopic image display device. .

The invention provides an edge-light stereoscopic image display device, the main purpose of which is to change The good general direct type light-emitting display device has the thickness which is not easy to be reduced and which is easy to have a lack of bright and dark areas.

In order to achieve the above objective, the present invention provides an edge-lit stereoscopic image display device, comprising: a light-emitting unit comprising a light guide and at least one light source, the light guide having an opposite front surface, a rear surface, and the a plurality of sides between the front and the rear, the direction of the light guiding member facing the front is a front direction, the direction of the light guiding member facing the rear is a rear direction, and the extending direction of each of the vertical sides is a lateral direction, the light source faces At least one of the side surfaces is disposed; a reflecting unit is disposed in a rear direction of the light guiding member, and the reflecting unit distinguishes the plurality of reflecting positions along the lateral direction, and each of the reflecting positions respectively has a reflectance, and the reflectance of the reflecting position is The reflection position is proportional to the distance of the light source; and a stereoscopic image layer includes a layer and a stereoscopic imaging unit, the stereo image layer is disposed on the light guide and located in a front direction of the reflection unit, and the stereo An imaging unit is located in a front direction of the layer; and a stereoscopic imaging unit of the stereoscopic image layer is disposed in front of the light guide, and a layer of the stereo image layer is disposed on the guide The back member, and the reflective layer provided that the neighboring unit is located and the direction of the layer.

The invention emits light through a light source disposed on a side surface of the light guiding member, and the light is uniformly reflected by the reflecting unit configured with different reflectances, and the light is finally emitted through the stereoscopic image layer to generate a stereoscopic image display, thereby configuring the structure. The thickness distance in the vertical direction of the layer is significantly reduced, and the overall structure is light and thin. At the same time, the reflectivity configuration of the reflecting unit can provide optimal reflection according to the amount of illumination, thereby improving the overall stereoscopic image quality and uniformity of light emission.

"Knowledge Technology"

10‧‧‧Image display device

11‧‧‧ hollow frame

111‧‧‧Bottom of the frame

12‧‧‧Light source

13‧‧‧Optical diaphragm

"this invention"

20‧‧‧Lighting unit

21‧‧‧Light guides

211‧‧‧ front

212‧‧‧Back

213‧‧‧ side

214‧‧‧ slots

22‧‧‧Light source

30‧‧‧Reflecting unit

31‧‧‧Reflective structure

40‧‧‧ Stereo image layer

41‧‧‧ layers

42‧‧‧Three-dimensional imaging unit

50‧‧‧ total reflection layer

F‧‧‧Forehead

B‧‧‧post direction

S‧‧‧ lateral

D‧‧‧Light source distance

P‧‧‧reflection position

P1‧‧‧First reflection position

P2‧‧‧second reflection position

P3‧‧‧ third reflection position

D1‧‧‧first light source distance

D2‧‧‧second light source distance

D3‧‧‧ third light source distance

A‧‧‧Modular Framework

A1‧‧‧Electrical connection module

Figure 1 is a schematic diagram of a general image display device.

Fig. 2 is a schematic view showing an embodiment of an edge-lit stereoscopic image display device of the present invention.

Fig. 3 is a schematic view showing another embodiment of the side-light stereoscopic image display device of the present invention.

Fig. 4 is a schematic view showing still another embodiment of the edge-lit stereoscopic image display device of the present invention.

Fig. 5 is a schematic view showing an embodiment of the fourth embodiment in which a total reflection layer is further added.

Fig. 6 is a schematic view showing an embodiment of a plurality of light sources for an edge-light stereoscopic image display device of the present invention.

Fig. 7 is a schematic view showing an embodiment of the side-light stereoscopic image display device of the present invention configured for double-sided development.

Fig. 8 is a schematic view showing the implementation of the side-light stereoscopic image display device with the module frame of the present invention.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [simplified description of the drawings] for details:

A preferred embodiment of the edge-lit stereoscopic image display device of the present invention, as shown in FIGS. 2 to 8, includes: a light-emitting unit 20 including a light guide member 21 and at least one light source 22, the light guide member 21 having an opposite a front surface 211, a rear surface 212, and a plurality of side surfaces 213 between the front surface 211 and the rear surface 212. The direction of the light guiding member 21 facing the front surface 211 is a front direction F, and the light guiding member 21 faces the rear surface 212. a rear direction B, and a vertical direction of each of the side surfaces 213 is a lateral direction S, the light source 22 facing at least one of the side surfaces 213; A reflection unit 30 is disposed in the rear direction B of the light guide 21, and the reflection unit 30 distinguishes the plurality of reflection positions P along the lateral direction S. The reflection unit 30 has different surface roughness Ra at the reflection position P. Each of the reflection positions P has a reflectivity, and each of the reflection positions P to the light source 22 has a light source distance D, and the reflectance of the reflection position P is proportional to the reflection position P to the light source distance D of the light source 22. The reflective unit 30 of the present embodiment includes a plurality of reflective structures 31. The reflective structure 31 of the reflective unit 30 is printed with a plurality of scattering points formed at the rear surface 212 of the light guiding member 21. The reflective position P is provided with the reflective structure 31. The density is proportional to the reflectance, and each of the reflection positions P of the reflection unit 30 is provided with a reflection structure 31 of a different density, and the density of the reflection structure 31 of the reflection position P is proportional to the distance from the reflection position P to the light source of the light source 22. That is, the closer to the surface roughness Ra of the reflection position P of the light source 22, the more the surface roughness Ra of the reflection position P increases as the distance between the reflection position P and the light source 22 increases, thereby causing each reflection position. The reflectivity is proportional to the distance of the light source 22; and a stereoscopic image layer 40 includes a layer 41 and a stereoscopic imaging unit 42 disposed on the light guide 21 and located at the reflective unit 30. The front direction F, and the stereoscopic imaging unit 42 is located in the front direction F of the layer 41.

The above is the main structural configuration and features of the edge-lit stereoscopic image display device of the present invention. In use, the light emitted from the light source 22 of the light-emitting unit 20 is uniformly reflected by the light guide 21 to the reflective unit 30. And scattering, finally, the light is emitted through the stereoscopic image layer 40, and the cooperation of the stereoscopic imaging unit 42 and the layer 41 transmitted through the stereoscopic image layer 40 exhibits a visual impression of the stereoscopic image; and the light source 22 of the present invention is Disposed on the side surface 213 of the light guide member 21, the light emitted from the light source 22 is evenly reflected by the reflection unit 30, and is combined with the reflectivity of the reflection unit 30 of the present invention to make the light source 22 have the most uniform light. State shot The overall thickness can be significantly reduced, and the utility model can be used as a thinned product, and the stereoscopic image quality of the stereoscopic image layer 40 can be ensured, and the significant separation of the bright and dark regions can be avoided. Overall imaging quality.

In the embodiment shown in FIG. 2, a light source 22 is disposed on one side 213 of the light guide member 21. The front surface 211 of the light guide member 21 is provided with a stereoscopic imaging unit 42 of the stereoscopic image layer 40. The reflector unit 30 is disposed at the rear of the light guide member 21, and the reflection unit 30 is disposed in the rear direction of the light guide member 21, and the reflection unit 30 is disposed adjacent to the layer 41 and located in the direction B after the layer 41; In an embodiment, the reflective unit 30 is provided with a plurality of reflective structures in the form of scattered dots, and the density of the reflective structures 31 on the reflective unit 30 near the position of the light source 22 is lower, and the density of the reflective structures farther away from the position of the light source 22 is higher. According to the second example, the three reflection positions P on the reflection unit 30 are respectively the first reflection position P1, the second reflection position P2, and the third reflection position P3, and the reflection positions P to the light source 22 are respectively The first light source distance D1, the second light source distance D2, and the third light source distance D3, the first light source distance D1<the second light source distance D2<the third light source distance D3, and each reflection position P has a first reflection Rate, a second reflectivity, a third reflectivity, then The ratio of the ratio of the ratio becomes the configuration of the third reflectance > the second reflectance > the first reflectance; thus, the closer the amount of illumination received by the reflecting unit 30 closer to the position of the light source 22, the closer it is to the The reflectance of the reflecting unit 30 at the position of the light source 22 is configured to be a lower ratio; conversely, since the amount of illumination received by the reflecting unit 30 farther away from the position of the light source 22 is weaker, the reflecting unit 30 farther away from the position of the light source 22 is located. The reflectance needs to be configured to a higher ratio; thereby homogenizing the light-emitting rate of the light reflected by the reflecting unit 30 at different positions to improve the overall light-emitting uniformity;

The embodiment shown in FIG. 3 is mostly the same as the second embodiment, except that the light guide 21 is provided with a slot 214 in the front direction F of the reflection unit 30, and the stereo image layer is provided. The layer 41 of the 40 is directly inserted into the slot 214, thereby facilitating the replacement of the layer 41, thereby improving the convenience of use; of course, the layer 41 can also be replaced by a positioning unit. The positioning unit is disposed on the light guiding member 21, and the disassembling and positioning unit can be a component that can be quickly replaced, such as a screw lock, a snap member, a quick release device, or a devil felt, and should not be disclosed in the preferred embodiment. The content is limited.

In addition, in the principle of the configuration of the structure before and after the structure, as shown in FIG. 4, a light source 22 is disposed on one side 213 of the light guiding member 21, and the reflecting unit is provided. 30 is disposed on the rear surface 212 of the light guide 21 in the direction B, and the stereo image layer 40 is disposed on the light guide 21 and located in the front direction F of the reflection unit 30, and the stereo image layer of the embodiment 40 is disposed on the front surface 211 of the light guide member 21. At the same time, the stereoscopic imaging unit 42 is located in the front direction F of the layer 41, and the structure is configured according to the same purpose and function as the above embodiment; The light-emitting rate of the light is increased. Therefore, as shown in FIG. 5, a total reflection layer 50 is further added to the same structural configuration base of the fourth embodiment. The total reflection layer 50 is located in the rear direction B of the reflection unit 30. In order to prevent the light that is not reflected by the reflection unit 30 from leaking light from the rear direction B, the brightness of the overall device is ensured. Further, in the above embodiments, one light source 22 is disposed on one side 213 of the light guide 21 For example, however, the number of the light source 22 It is not limited to this. Therefore, please refer to FIG. 6 , the front and rear configuration of each structure of the sixth embodiment is substantially the same as that of the second embodiment. The difference is that the light source 22 is disposed on each of the two side surfaces 213 of the light guide 21 . Each of the light sources 22 is disposed opposite to the side surface 213. Thus, the reflectivity of the reflective unit 30 needs to be changed correspondingly. In this embodiment, the reflection unit 30 is closer to the density of the reflective structure 31 at the two side light sources 22. The lower, the bit The density of the reflective structure 31 between the two sides is higher, whereby the same purpose and effect as the above embodiments can be achieved in the same manner; of course, one light source is disposed on each side 213 of the light guiding member 21; 22 is also an implementation aspect; in addition, the above embodiments are all used to display a stereoscopic image on a single side, and of course, two sets of the side optical stereoscopic image display devices of the present invention can be assembled at the same time. The stereo imaging unit 42 of the two sets of edge-lit stereoscopic image display devices are respectively used in different directions, as shown in FIG. 7, to meet the requirement of displaying a stereoscopic image on both sides; of course, in order to make the side of the present invention The optical stereoscopic image display device is more convenient to use, so that the entire device can be modularly patterned. As shown in FIG. 8, the electrical connection module A1 can be pre-processed through a module frame A. As long as the side-light stereoscopic image display device of the present invention is incorporated into the module frame A, the circuit connection can be quickly and easily completed, thereby improving the convenience of use; and the module frame A can be used in different states. Such as the licensing status, the listing state Or other display aspects, thereby improving the applicability of the whole.

20‧‧‧Lighting unit

21‧‧‧Light guides

211‧‧‧ front

212‧‧‧Back

213‧‧‧ side

22‧‧‧Light source

30‧‧‧Reflecting unit

31‧‧‧Reflective structure

40‧‧‧ Stereo image layer

41‧‧‧ layers

42‧‧‧Three-dimensional imaging unit

F‧‧‧Forehead

B‧‧‧post direction

S‧‧‧ lateral

D‧‧‧Light source distance

D1‧‧‧first light source distance

D2‧‧‧second light source distance

D3‧‧‧ third light source distance

P‧‧‧reflection position

P1‧‧‧First reflection position

P2‧‧‧second reflection position

P3‧‧‧ third reflection position

Claims (7)

A display device comprising: a light-emitting unit comprising a light guide and at least one light source, the light guide having an opposite front face, a rear face, and a plurality of sides between the front face and the back face, the light guide member facing The front direction is a front direction, the light guide member faces the rear direction in a rear direction, and the vertical direction of each of the side surfaces is a lateral direction, the light source faces at least one of the side surfaces; a reflection unit is disposed at the side a rear direction of the light guide member, and the reflection unit laterally distinguishes the plurality of reflection positions, each of the reflection positions respectively having a reflectance, the reflectance of the reflection position being proportional to the distance from the reflection position to the light source; and a perspective view The image layer includes a layer and a stereoscopic imaging unit. The stereo image layer is disposed on the light guide and located in a front direction of the reflective unit, and the stereoscopic imaging unit is located in a front direction of the layer; and the stereo image is a stereoscopic imaging unit of the layer is disposed in front of the light guiding member, a layer of the stereoscopic image layer is disposed behind the light guiding member, and the reflecting unit is adjacent to the layer setting Located rear direction of the layer. The display device of claim 1, wherein the light-emitting unit has a plurality of light sources, each of the light sources being disposed facing each side of the light guide. The display device of claim 1, wherein the reflecting unit comprises a plurality of reflecting structures, the reflecting structure of the reflecting unit is a plurality of scattering points formed by printing behind the light guiding member, and the reflecting position is provided with a reflecting structure The density is proportional to the reflectivity, and the reflection positions of the reflection unit are provided with reflection structures of different densities, and the reflection structure density of the reflection position is proportional to the distance from the reflection position to the light source. The display device of claim 1, wherein the light guide member has a a slot, the slot is located in a front direction of the reflective unit, and the layer of the stereoscopic image layer is detachably received in the slot, and the stereoscopic imaging unit is disposed in front of the light guide. The display device of claim 3, wherein a total reflection layer is further disposed in a rear direction of the reflection unit. The display device of claim 1, wherein the layer of the stereoscopic image layer is disposed on the light guide by a disengagement positioning unit. The display device of claim 1, further comprising a module frame, wherein the module frame is provided with an electrical connection module, the illumination unit is received in the module frame, and the light source and the The electrical connection module is electrically connected.