TWI556034B - Displaying apparatus - Google Patents

Description

Display device

The present invention relates to a display device, and more particularly to a display device that displays an image using a display panel.

In the current liquid crystal panel manufacturing technology, the liquid crystal panel still needs to be supported and fixed by the structure, and the circuit current of the liquid crystal panel is usually directly laid out using the substrate of the liquid crystal panel. Therefore, the entire liquid crystal panel necessarily has an area where the image cannot be displayed. In addition, in the assembly structure of the actual liquid crystal display, the liquid crystal panel needs to be connected with other components, such as a structural frame, so that the current liquid crystal display has a non-display area where the image cannot be displayed under normal viewing angle.

In applications for large display devices, such as video walls, they are formed using a plurality of display overlays. However, due to the fact that the current display has a non-display area where the image cannot be displayed, the TV wall as a whole will inevitably form a screen with a grid line, which destroys the integrity of the image. In addition, due to the existence of each display frame, the visual image stitching is usually discontinuous. When the frame width is relatively wide, the image will be more broken, and the integrity of the image is more serious, which may even hinder the user from correctly identifying. The content of the image.

For this border problem, there is currently a principle of using a magnifying glass to enlarge the panel image. This allows the user to magnify the image at normal viewing angles, as if there were no borders. However, when the viewer shifts the angle of view, the border cannot be effectively masked. Moreover, limited to the optical lens design used to magnify the image, such as a Fresnel lens, when viewed at close range, due to optical imaging limitations, it may be found that the image is not uniformly amplified, causing distortion of the magnified image. The phenomenon. In addition, it is also possible to produce a Moire phenomenon.

In addition, for this frame problem, the optical film is also used to offset the entire image to shield the border of one side or two adjacent sides. However, the image shift is highly susceptible to the collimation of the backlight and the optical characteristics of the optical film itself, and there is a blurred image after the image shift. Moreover, since the entire image is offset, the area of the non-image area is still not effectively reduced, and since only the border of one side or two adjacent sides is shielded, the stitched image is also limited, for example, only two or four adjacent The display panels can be spliced into a seamless display area, which may not be sufficient to meet the required display area.

In view of the problems in the prior art, one of the objects of the present invention is to provide a display device that utilizes a beam splitting member and a light reflecting member to separate and reflect light so that an image can be displayed on the non-display area, thereby causing a visual reduction or Eliminate the effect of the border.

The display device of the present invention comprises a display panel, a beam splitting member and a light reflecting member. The display panel has a light-emitting surface on which a display area and a non-display area are defined, and the non-display area is located at a side of the display area. The light splitting member is disposed on the display area and Adjacent to the non-display area. The light reflecting member is disposed on the non-display area corresponding to the light separating member. a light that is transmitted from the first display area and enters the light splitting member, the light is separated into a first partial light and a second partial light by the light splitting member, and the light is emitted from the light splitting member, the first portion The light travels in the display direction and the second portion of the light travels toward the first non-display area. The second portion of the light is then reflected by the light reflecting member to travel in the display direction. Thereby, for the user, an image is generated on the non-display area, thereby achieving the effect of reducing or eliminating the frame. In addition, the light reflecting member utilizes the principle of reflection, which is different from the lens refraction principle in the foregoing technique, and is less likely to cause image distortion and moiré. Moreover, the present invention does not shift the light of the entire area (for example, the light-receiving member), so that the frame is indeed shielded by the reflected image to produce the effect of reducing or eliminating the frame, which is visually incapable of shifting only the entire image in the prior art. The area in which the image is generated is not reduced, and it is advantageous to stack a plurality of display devices of the present invention to form a large display screen, such as a video wall.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

Please refer to FIG. 1, which is a cross-sectional view of a portion of a display device 1 in accordance with a preferred embodiment of the present invention. The display device 1 has a display direction 10 and includes a display panel 12, a beam splitting member 14, a light reflecting member 16, and a backlight module 20. The display panel 12 has a light-emitting surface 122 defining a display area 1222 and a non-display area 1224. The non-display area 1224 is located at the side of the display area 1222; wherein, in FIG. 1, A non-display area 1224 that does not produce a display image is represented by hatching. The light splitting member 14 is disposed on the display area 1222 and adjacent to the non-display area 1224 for separating the light emitted from the display area 1222 by the light splitting member 14 , that is, the light transmitted from the display area 1222 and entering the light splitting member 14 into a first A part of the light ray L11 and a second partial light ray L12, the first partial light ray L11 travels in the display direction 10, and the second partial light ray L12 travels toward the non-display area 1224. The light reflecting member 16 is disposed on the non-display area 1224 corresponding to the light splitting member 14 for reflecting the second partial light L12 to further travel the second partial light L12 toward the display direction 10. The other light L10 emitted from the display area 1222 also travels in the display direction 10. The backlight module 20 is disposed under the display panel 12 to provide a backlight required for the display panel 12. Thereby, for the user, the entire display panel 12 is visually exposed to light, so that the effect of reducing or eliminating the non-display area 1224 can be achieved. In addition, in practice, the image is usually composed of pixels, so the foregoing separating the light means separating the light of different pixels from the display area 1222, such as the pixel corresponding to a part of the first part of the light L11, The second part of the light L12 corresponds to the other part of the pixel; in this embodiment, the two parts of the pixels are staggered. However, the invention is not limited thereto.

Please also refer to FIG. 2, which is a schematic diagram of the travel path of the second portion of the light ray L12. After the second portion of the light beam L12 is separated by the beam splitting member 14, an angle of deviation A1 is formed between the traveling direction and the display direction 10. In the present embodiment, the light reflecting member 16 has a reflecting surface 162, and a normal angle A2 is formed between the normal line and the display direction 10. The reflecting surface 162 is for reflecting the second partial light L12 and the second partial light L12 is caused to travel in the display direction 10, so that the sum of the deviation angle A1 and the set angle A2 needs to be 90 degrees.

In the present embodiment, the light reflecting member 16 is a flat mirror and provides a single reflecting surface, but the invention is not limited thereto. Please refer to FIG. 3, which is a cross-sectional view of a portion of a display device according to another embodiment. The display device of FIG. 3 has substantially the same structure as the display device 1, and the main difference is that the light reflecting member 17 of the display device of FIG. 3 is a dome-shaped reflecting member, which can also provide a single reflecting surface 172. The second partial light L12 is reflected to further move the second partial light L12 toward the display direction 10. Please refer to FIG. 4, which is a cross-sectional view of a portion of a display device according to another embodiment. The display device of FIG. 4 has substantially the same structure as the display device 1 described above, and the main difference is that the light reflecting member 18 of the display device of FIG. 3 is a stepped mirror having a plurality of reflecting surfaces 182 for The second partial light ray L12 is collectively reflected to cause the second partial light ray L12 to travel in the display direction 10. The mirror 18 has a lower set height than the dome-shaped reflective member 17 (shown in phantom in Figure 4) as required to shield the same non-display area 1224.

Please refer to FIG. 5, which is a schematic diagram of the light splitting mechanism of the beam splitting member 14 according to an embodiment. In the present embodiment, the light-splitting member 14 includes a light-shielding portion 142 and a light-transmitting portion 144, wherein the light-shielding portion 142 is indicated by hatching in FIG. In practice, the beam splitting member 14 can be a transparent plate member formed by printing an opaque paint, and the region coated with the opaque paint constitutes the light shielding portion 142, and the region not coated with the opaque paint. That is, the light transmitting portion 144 is formed. Thereby, the first partial light ray L11 penetrates the light transmitting portion 144 toward the display direction 10, and the second partial light ray L12 obliquely penetrates the light transmitting portion 144 from below the light shielding portion 142 to travel toward the non-display area 1224.

Please refer to FIG. 6, which is a schematic diagram of the light splitting mechanism of the light splitting member 14 according to another embodiment. In the present embodiment, the beam splitting member 14 includes a light modulating portion 146 and a planar light transmitting portion 148. The light modulating portion 146 may be composed of a plurality of lenses and refract light by an optical principle. Thereby, the first partial light ray L11 penetrates the planar light transmitting portion 148 toward the display direction 10, and the second partial light ray L12 is modulated by the light modulating portion 146 to travel toward the non-display area 1224.

Please refer to FIG. 7, which is a schematic diagram of the splitting mechanism of the beam splitting member 14 according to another embodiment. In the present embodiment, the beam splitting member 14 includes a plurality of light modulating portions 150, such as germanium, which reflect and refract light by optical principles. In practice, the light modulating portion 150 can be directly fixed to the display panel 12, but the invention is not limited thereto. Thereby, the first partial light ray L11 still travels in the display direction, and the second partial light ray L12 is modulated by the light modulating portion 150 to travel toward the non-display area 1224. It is to be noted that, in practice, the light modulating portion 150 may be formed on a transparent plate member, and the region of the transparent plate member not provided with the light modulating portion 150 constitutes a planar light transmitting region, and the first portion of the light L11 is still available. The light is transmitted in the display direction 10; at this time, the transparent plate structure provided with the light modulating portion 150 is logically the same as the light splitting member 14 in Fig. 6.

Please return to Figure 1. In this embodiment, the display area 1222 can be regarded as including an image overlap area 1222a and a normal image area 1222b due to the splitting effect of the light splitting member 14 on the image light. The light in the image overlapping area 1222a is separated by the beam splitting member 14 into a first partial light L11 and a second partial light L12, wherein the first partial light L11 is shaped The first sub-image is formed, and the second partial light L12 is reflected by the light reflecting member 16 to form a second sub-image. The first sub-image is spliced with the second sub-image, and the first sub-image itself is continuous with the image formed by the light L10, so that the display panel 12 can produce a complete image that visually covers the non-display area 1224. In addition, since the light of the image overlapping area 1222a is dispersed, the light intensity of the first sub-image and the second sub-image is smaller than other light L10 that does not pass through the light reflecting member 16 (ie, emitted from the normal image area 1222b). The light intensity of the light) causes uneven brightness of the image. At this time, in practice, the backlight module 18 can provide the backlight intensity corresponding to the image overlap area 1222a higher than the backlight intensity provided by the corresponding normal image area 1222b, as image brightness compensation. In addition, since the planar reflection has the effect of making the image opposite to the left and right, in order to allow the user to see the normal image, the image of the second sub-image on the light-emitting surface 122 of the panel 12 needs to be the opposite image, so that the second The sub-image is reflected once by the light reflecting member 16 to obtain a normal image.

In the foregoing embodiments, the light reflecting members 16, 17, 18 are all implemented as separate members, but the invention is not limited thereto. In general, the display device has a transparent protective cover, which is mainly used to protect the display panel. Therefore, the light reflecting member of the present invention can be integrated into the structure of the transparent protective cover. Please refer to FIG. 8 , which is a schematic cross-sectional view of a portion of a display device according to another embodiment. The display device of FIG. 8 has substantially the same structure as the display device 1, and the main difference is that the light reflecting member 19 of the display device of FIG. 8 is a transparent protective member which is disposed on the display panel 12. The transparent protective member 19, such as a transparent glass, has a side edge 192 and a total internal reflection surface 194 at the side edge 192. The total internal reflection surface 194 is for reflecting the second partial light L12 to make the second partial light L12 travels in the display direction 10, and the first partial light ray L11 penetrates the transparent protective member 19 toward the display direction 10. It is to be noted that when the second partial light ray L12 emitted from the beam splitting member 14 enters the light reflecting member 19, the traveling path thereof will be deflected due to the refraction effect, and therefore the second partial light ray L12 travels in FIG. The description is applicable to this modification, and the correction can be easily accomplished based on the optical principle by those having ordinary knowledge in the technical field of the present invention, and therefore will not be further described. In addition, in the foregoing embodiment, although only a single side of the display area 1222 is described, the person skilled in the art can apply the other side of the display area 1222 to the other side based on the foregoing description. It will not be explained otherwise. It is further noted that, in practice, the beam splitting member 14 may also be structurally integrated to the transparent protective member 19, for example, to form a surface structure having a desired refractive interface on the bottom surface of the transparent protective member 19 as a light splitting structure.

Please refer to FIG. 9, which is a partial cross-sectional view of a display device 3 according to another preferred embodiment of the present invention. In the present embodiment, the display device 3 includes the other display panel 32, another light splitting member 34, another light reflecting member 36, and another backlight module 38 in addition to the structure of the display device 1. The display panel 32 has a light-emitting surface 322 on which a display area 3222 and a non-display area 3224 are defined. The non-display area 3224 is located on the side of the display area 3222. The display panel 32 is disposed adjacent to the display panel 12 such that the non-display area 1224 and the non-display area 3224 are located between the display area 1222 and the display area 3222. The light splitting member 34 is disposed above the display area 3222 and adjacent to the non-display area 3224 for separating the light emitted from the display area 3222 by the light splitting member 34 into a third partial light L13 and a fourth partial light L14. The third portion of the light ray L13 travels toward the display direction 10, and the fourth portion of the light ray L14 travels toward the non-display area 3224, and the light reflecting member 36 The corresponding beam splitting member 34 is disposed on the non-display area 3224 for reflecting the fourth partial light ray L14 to advance the fourth partial light ray L14 toward the display direction 10. In the present embodiment, the display device 3 can be regarded as the two display devices 1 being symmetrically connected. Therefore, for other descriptions of the display device 3, please refer to the related description of the display device 1 and its variant description, and no further details are provided herein. However, in the practical application of the present invention, two adjacent display panels are not limited to the same.

Similarly, the third partial light ray L13 forms a third sub-image, and the fourth partial light ray L14 is reflected by the light reflecting member 36 to form a fourth sub-image, the first sub-image, the second sub-image, and the fourth sub-image. The image and the third sub-image are sequentially spliced together with other images formed by the light without the beam splitting members 14, 34 to collectively produce a complete image that visually covers the non-display area 1224 and the non-display area 3224. In addition, in practice, the light reflecting member 16 and the light reflecting member 36 can be connected to each other, or even integrated, for example, integrally formed, which is beneficial to the image mosaic effect, especially between the second sub image and the fourth sub image. splice. In addition, in addition, the backlight module 20 and the backlight module 38 can also be integrated into a single backlight module. However, the present invention is not limited thereto.

Please refer to FIG. 10, which is a cross-sectional view of a display device 5 according to another embodiment. The display device 5 and the display device 3 have substantially the same logical structure, and the main difference is that the display device 5 adopts a design in which the light reflecting member and the transparent protective member structure are integrated in FIG. 8. Therefore, for convenience of explanation, in FIG. 10, each The component symbols of the eighth and ninth figures are still used in the description of the components. For the description of the components, reference may be made directly to the description of the components in the eighth and ninth drawings, and the description thereof will not be repeated. In this embodiment, the corresponding display panel The light reflecting members 19a (transparent protective members) of 12 and 32 are integrated into a single member, which simplifies the process, but the invention is not limited thereto. Further, as described above with respect to the light reflecting member 19 shown in Fig. 8, in practice, the light separating member 14 may be structurally integrated to the transparent protective member 19a, and will not be described again. Similar to the display device 3, the first partial light L11 forms a first sub-image, the second partial light L12 forms a second sub-image, the third partial light L13 forms a third sub-image, and the fourth partial light L14 forms a fourth a sub-image; the first sub-image, the second sub-image, the fourth sub-image and the third sub-image are sequentially spliced together, and the images formed by the light of the other non-light-splitting members 14 and 34 can be visually covered together A complete image of the non-display area 1224 and the non-display area 3224.

It should be noted that in the embodiment, the display devices 3 and 5 are only connected to two display panels, but the invention is not limited thereto. In practice, the present invention is applicable to the case of connecting more display panels to form a large display screen, such as a video wall. Moreover, since the present invention can effectively produce the effect of visually reducing or eliminating the frame compared to the prior art, the formed large display screen can effectively suppress or eliminate the phenomenon of grid lines, image breakage, image distortion in the non-display area, deformation, and the like.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1, 3, 5‧‧‧ display devices

10‧‧‧Display direction

12, 32‧‧‧ display panel

14, 34‧‧‧ Spectroscopic components

16, 17, 18, 19, 19a, 36‧‧‧Light reflecting members

20, 38‧‧‧ backlight module

122, 322‧‧‧ shiny surface

142‧‧‧Lighting Department

144‧‧‧Transmission Department

146, 150‧‧‧Light Modulation Department

148‧‧ ‧ flat light transmission

162, 172, 182‧‧ ‧ reflective surface

192‧‧‧ side

194‧‧‧ Total internal reflection surface

1222, 3222‧‧‧ display area

1222a‧‧•Image overlap area

1222b‧‧‧Normal image area

1224, 3224‧‧‧ non-display area

L10, L11, L12, L13, L14‧‧‧ rays

A1‧‧‧ Deviation angle

A2‧‧‧Set angle

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing a portion of a display device in accordance with a preferred embodiment of the present invention.

Fig. 2 is a schematic view showing the traveling path of the second portion of the light of the display device in Fig. 1.

Fig. 3 is a schematic cross-sectional view showing a portion of a display device according to another embodiment.

Fig. 4 is a schematic cross-sectional view showing a portion of a display device according to another embodiment.

Fig. 5 is a schematic view showing the light splitting mechanism of the beam splitting member according to an embodiment.

Fig. 6 is a schematic view showing the light splitting mechanism of the light splitting member according to another embodiment.

Fig. 7 is a schematic view showing the light splitting mechanism of the light splitting member according to another embodiment.

Figure 8 is a cross-sectional view showing a portion of a display device according to another embodiment.

Figure 9 is a cross-sectional view showing a portion of a display device in accordance with another preferred embodiment of the present invention.

Figure 10 is a schematic cross-sectional view of a display device in accordance with another embodiment.

1‧‧‧ display device

10‧‧‧Display direction

12‧‧‧ display panel

14‧‧‧Distributing components

16‧‧‧Light reflecting members

20‧‧‧Backlight module

122‧‧‧Glossy surface

162‧‧‧reflecting surface

1222‧‧‧ display area

1222a‧‧•Image overlap area

1222b‧‧‧Normal image area

1224‧‧‧Non-display area

L10, L11, L12‧‧‧ rays

Claims (9)

A display device having a display direction, the display device comprising: a first display panel having a first light emitting surface defining a first display area and a first non-display area, and the first non-display area Located on a side of the first display area; a first light splitting member disposed on the first display area adjacent to the first non-display area; and a first light reflecting member disposed on the first non-display area And corresponding to the first beam splitting member, the first light reflecting member is a transparent protective member disposed on the first display panel to protect the first display panel, the transparent protective member has one side and is located at the side a total internal reflection surface; wherein light that is transmitted from the first display area and enters the first beam splitting member is separated into a first partial light and a second partial light by the first light splitting member, and the light is After the first beam splitting member is emitted, the first portion of the light travels in the display direction and penetrates the transparent protective member, and the second portion of the light travels toward the first non-display region and is opposite to the total internal reflection surface Further travels toward the display direction. The display device of claim 1, wherein the first beam splitting member comprises a light shielding portion and a light transmitting portion, the first portion of the light passing through the light transmitting portion toward the display direction, and the second portion of the light is from the light shielding portion The square penetrates the light transmitting portion obliquely. The display device of claim 1, wherein the first beam splitting member comprises a light modulating portion, and the second portion of the light is modulated by the light modulating portion to face the first non-display region Progress. The display device of claim 3, wherein the first beam splitting member comprises a planar light transmitting portion, and the first portion of the light passes through the planar light transmitting portion toward the display direction. The display device of claim 1, further comprising a backlight module disposed under the first display panel, the first display area comprising an image overlap area and a normal image area, the backlight module corresponding to the image overlap The area provides a backlight with a higher intensity than the backlight provided for the normal image area. The display device of claim 1, wherein the first partial light forms a first sub-image, and the second partial light is reflected by the first light reflecting member to form a second sub-image, the first sub-image and the The second sub-image is stitched. The display device of claim 1, further comprising a second display panel, a second beam splitting member and a second light reflecting member, the second display panel having a second light emitting surface on which a second display is defined a second non-display area, the second non-display area is located at a side of the second display area, and the second display panel is disposed adjacent to the first display panel, such that the first non-display area and the second The non-display area is located between the first display area and the second display area, the second beam splitting member is disposed on the second display area and adjacent to the second non-display area, and the second light reflecting member corresponds to the second a light splitting member is disposed on the second non-display area, and another light transmitted from the second display area and entering the second beam splitting member is separated into a third part via the second beam splitting member After the light and a fourth portion of the light are emitted from the second beam splitting member, the third portion of the light travels toward the display direction, and the fourth portion of the light travels toward the second non-display region. The display device of claim 7, wherein the first light reflecting member is coupled to the second light reflecting member. The display device of claim 7, wherein the first partial light forms a first sub-image, and the second partial light is reflected by the first light reflecting member to form a second sub-image, wherein the third partial light forms a a third sub-image, wherein the fourth sub-image is reflected by the second light-reflecting member to form a fourth sub-image, wherein the first sub-image, the second sub-image, the fourth sub-image and the third sub-image are Splicing.