TWI475974B - Product exhibition cabinet, see-through display and light guide plate - Google Patents

Description

Item display cabinet, transparent display and light guide

The invention relates to an item display cabinet, in particular to an item display cabinet with a transparent display.

The transparent display device means that the image can be displayed not only on the display surface but also on the display surface. Such a transparent display device can be applied to the glass of a vehicle, a house or an advertisement to provide relevant information required by the user, and thus, the application of such a transparent display device is expected to increase substantially.

However, such a transparent display device generally uses an organic light-emitting panel and a plasma display panel to provide a desired light source. Thus, if such a conventional transparent display adopts another back light source to provide a display light source of the LCD panel from the rear, the rear side of the rear The light source will likely impede its transparency and reduce its transparency.

It can be seen that the above-mentioned conventional transparent display device obviously has inconveniences and defects, and needs to be further improved. Therefore, how to effectively solve the above inconveniences and defects is one of the current important research and development topics, and it has become an urgent need for improvement in related fields.

The invention discloses an item display cabinet for providing information on a display item and a transparent display while a person is on the cover of the item display cabinet.

The present invention discloses a transparent display and a light guide plate for allowing a user to see information on the display surface of the transparent display, and to see an object located behind the transparent display through the display surface of the transparent display.

One aspect of the present invention provides an article display cabinet, a transparent display, and a light guide plate. The item display cabinet includes a cabinet, a cover and a transparent display. The cabinet body contains a groove. The cover covers the recess and is surrounded by the recess for placing at least one display space for displaying the product. The transparent display is disposed on the cover, and the transparent display comprises a light source, a liquid crystal display panel and a single light guide plate. The light source is used to project light to the light guide. The liquid crystal display panel is transparent. The single light guide plate is directly stacked on one side of the liquid crystal display panel, and the single light guide plate includes a first light emitting surface, a second light emitting surface and a light incident surface. The second light-emitting surface is opposite to the first light-emitting surface, and is away from the display space than the first light-emitting surface. The light source is used to project light onto the incident surface. The light incident surface is adjacent to the first light emitting surface and the second light emitting surface for receiving the light of the light source, and both of the light are emitted toward the first light emitting surface and the second light emitting surface. The second illuminating surface is arranged with a plurality of microstructured dots, and the distribution of the microstructured dots is sufficiently dispersed to clearly present the display product through the liquid crystal display panel. The amount of light emitted by the light source from the first light exit surface is greater than the amount of light output by the light source from the second light exit surface.

In summary, the technical solution of the present invention has obvious advantages and beneficial effects compared with the prior art. With the above technical solution, considerable technological advancement and practicability can be achieved, and the industrial use value is widely used. The article display cabinet, the transparent display and the light guide plate of the present invention can be seen by at least the display surface of the transparent display. Information, and the display product located behind the transparent display can be seen through the display surface of the transparent display.

The above description and the following embodiments will be described in detail below with reference to the embodiments, and further explanation of the invention.

The present invention will be apparent from the following description and the detailed description of the embodiments of the present invention, which may be modified and modified by the teachings of the present invention without departing from the invention. The spirit and scope.

Please refer to FIG. 1 , FIG. 2A and FIG. 2B , wherein FIG. 1 is a schematic exploded view of the article display cabinet 100 of the present invention; FIG. 2A is a diagram showing the article display cabinet 100 of FIG. 1 . A combined view of FIG. 2B and a partial enlarged view of position 2A at position M1.

The article display cabinet 100 in this embodiment is, for example, a vending machine or a glass window. The item display cabinet 100 includes a cabinet 200, a cover 300, and a transparent display 400. The cabinet 200 contains one or more recesses 210, which may be separated by a space 211 into a plurality of compartments. The cover 300 is transparent and can cover the recess 210. After the recess 210 is covered, a display space 212 for placing the display product 214 can be enclosed with the recess 210. The transparent display 400 is disposed on the outer cover 300. The transparent display 400 includes a light source 410, a liquid crystal display panel 420, and a light guide plate 430. The liquid crystal display panel 420 has transparency, and the light guide plate 430 is directly stacked on one side of the liquid crystal display panel 420. The light source 410 is used to project light to the light guide plate 430.

Regarding the light guide plate 430, specifically, the light guide plate 430 is of a plate type or a wedge shape, and includes a first light exit surface 431 and a second light exit surface 432 disposed opposite to each other, and surrounding the first light exit surface 431 and the second light exit surface. a plurality of sides 432 (such as the light incident surface 433), wherein the second light exit surface 432 is away from the display space 212 than the first light exit surface 431, and the area of either side is smaller than the first light exit surface 431 or the second light exit surface 432 The area is adjacent to the first light-emitting surface 431 and the second light-emitting surface 432, and is used to receive the light from the light source 410, and then the projected light is emitted toward the first light-emitting surface 431 and the second light-emitting surface 432.

In this embodiment, as shown in FIG. 1 and FIG. 2B , the light guide plate 430 is directly stacked on one side of the liquid crystal display panel 420 adjacent to the display space 212 , so that the light guide plate 430 is located in the display space 212 and the liquid crystal display panel. Between the 420 and the second light-emitting surface 432 is between the liquid crystal display panel 420 and the first light-emitting surface 431. Therefore, the liquid crystal display panel 420 is located outside the light guide plate 430 with respect to the display space 212.

The light source 410 is disposed beside one of the side surfaces of the light guide plate 430 and emits light toward the side surface. Therefore, this side is the light-incident surface 433 referred to herein below. However, the present invention is not limited thereto, and the size of the visible light guide plate determines the number of light incident surfaces to be single or plural.

Please refer to FIGS. 1 and 3, and FIG. 3 is a front elevational view of the article display cabinet 100 of FIG. 1. The second light exit surface 432 is configured with a plurality of microstructure dots 440. The microstructured dots 440 are distributed on the second light-emitting surface 432, and the projected light is unequally emitted toward the first light-emitting surface 431 and the second light-emitting surface 432, so that the light-emitting amount of the light source 410 outputted by the first light-emitting surface 431 is L1. The amount of light emitted L2 that is output from the second light-emitting surface 432 is larger than the light source 410. For example, the light-emitting amount L1 output from the first light-emitting surface 431 of the light source 410 and the light-emitting amount L2 output from the second light-emitting surface 432 of the light source 410 are 6:4, however, the present invention is not limited thereto.

In addition, since the distribution of the microstructured dots 440 is sufficiently dispersed, the display product 214 is sufficiently presented through the liquid crystal display panel 420, so that the display product 214 can be clearly seen by the person through the display surface 403 of the transparent display 400, and is transparent. The display surface 403 of the display 400 clearly sees the information 404 on the transparent display 400. (Fig. 3)

For example, the total area of the microstructured dots 440 on the second light-emitting surface 432 is greater than 0, which is less than or equal to 78.5% of the area of the second light-emitting surface 432. Further, the microstructured dots 440 are disposed on the second light-emitting surface 432. The total area above is, for example, 0.5% to 78.5% of the area of the second light exit surface 432.

Please refer to FIG. 4 , FIG. 5A and FIG. 5B , FIG. 4 is a schematic exploded view of the article display cabinet 101 of the present invention in another embodiment, and FIG. 5A is a diagram showing the article display cabinet 101 of FIG. 4 . A combined view of FIG. 5B and a partial enlarged view of position 5A at position M2.

In another embodiment, the transparent display 401 is also disposed on the outer cover 300. In contrast, in FIG. 1 , the light guide plate 430 ′ is directly stacked on one side of the liquid crystal display panel 420 ′ away from the display space 212 ( FIGS. 4 and 5B ), so that the liquid crystal display panel 420 ′ is located in the display space 212 and the light guide plate. Between the 430's, the first light-emitting surface 431 is interposed between the liquid crystal display panel 420' and the second light-emitting surface 432. Therefore, the liquid crystal display panel 420' is located inside the light guide plate 430' with respect to the display space 212.

Please refer to Figures 5A and 5B. The second light exit surface 432 is configured with a plurality of microstructure dots 440. The microstructured dots 440 are distributed on the second light-emitting surface 432, and the projected light-emitting cloth can be equally emitted toward the first light-emitting surface 431 and the second light-emitting surface 432, so that the light-emitting amount of the light source 410 outputted by the first light-emitting surface 431 is L1. The amount of light emitted L2 that is output from the second light-emitting surface 432 is larger than the light source 410. For example, the light-emitting amount L1 output from the first light-emitting surface 431 of the light source 410 and the light-emitting amount L2 output from the second light-emitting surface 432 of the light source 410 are 6:4, however, the present invention is not limited thereto.

In addition, since the distribution of the microstructured dots 440 is sufficiently dispersed, the display product 214 is sufficiently presented through the liquid crystal display panel 420' and the light guide plate 430', so that a person can clearly see the display product through the display surface 403 of the transparent display 401. 214, the information 404 on the transparent display 401 can be clearly seen through the display surface 403 of the transparent display 401 (Fig. 3).

For example, the total area of the microstructured dots 440 on the second light-emitting surface 432 is greater than 0, which is less than or equal to 78.5% of the area of the second light-emitting surface 432. Further, the microstructured dots 440 are disposed on the second light-emitting surface 432. The total area above is, for example, 0.5% to 78.5% of the area of the second light exit surface 432.

Referring to FIGS. 6A-6E, FIG. 6A to FIG. 6E are respectively partial schematic views showing the microstructure dots 440 of the light guide plate of the present invention under various changes.

In FIG. 6A, the microstructured dots 440 have circular recesses, and each of the microstructured dots 440 has a vertical step H, a diameter P, and any two adjacent microstructure dots 440 having a separation distance G, and The vertical step difference H is smaller than the separation distance G. It should be understood that the vertical step difference H of the microstructured dots 440 is the vertical distance from the one deep point to the second plane of the second light exit surface 432. The aperture P of the microstructured dots 440 means the inner diameter of the concave surface of the second light-emitting surface 432 in the same plane. However, the present invention is not limited to circular recesses or circular bumps in the form of the microstructured dots 440. In other embodiments of the invention, the cross-sectional shape of the bumps may be a hemisphere, a semi-ellipsoid, a pyramid or a combination thereof.

Referring to FIGS. 6A and 6B, the spacing distances G of the microstructured dots 440 are identical to each other (FIG. 6A) or inconsistent (FIG. 6B). For example, in FIG. 6B, the distances G1 G G3 of the microstructured dots 440 are inversely proportional to the distance between each specific microstructure dot 440 and the light incident surface 433 of the light guide plate, in other words, The smaller the distances G1 G G3 of the microstructured dots 440 which are farther away from the light incident surface 433 of the light guide plate, the smaller the distribution density of the microstructured dots 440.

Referring to FIGS. 6A and 6C, the apertures P of the microstructured dots 440 are identical to each other (FIG. 6A) or inconsistent (FIG. 6C). For example, in FIG. 6C, the diameters P1 to P4 of the microstructured dots 440 are proportional to the distance between each specific microstructure dot 440 and the light incident surface 433 of the light guide plate. In other words, the farther away from the microstructured dots 440 of the light incident surface 433 of the light guide plate, the larger the apertures P1 to P4.

Referring to FIGS. 6A and 6D, the vertical section differences H of the microstructured dots 440 are identical (FIG. 6A) or inconsistent (FIG. 6D). For example, in Figure 6D, the vertical step differences H1 - H4 of the microstructured dots 440 are proportional to the distance of each particular microstructured dot 440 from the light incident surface 433 of the light guide. In other words, the farther away from the microstructured dots 440 of the light incident surface 433 of the light guide plate, the greater the vertical step difference.

In addition, in another variation of the present invention, the ratio of the vertical step difference H of each of the microstructured dots 440 to the aperture P is 0.4 to 0.9, that is, when the vertical section difference H of each of the microstructured dots 440 is 4 μm, the aperture P is 9 microns, and so on.

Referring to FIGS. 6A and 6E, when the microstructured dots 440 are circular or circular, they have a center 441 (ie, a deep or very convex point of the microstructured dot 440). A circumference 442 (i.e., around the microstructured dot 440) has an angle θ of 140° to 179° between the two lines S connecting the circumference 442 of both sides of the center 441 from the center 441.

When the angle θ of each microstructure dot 440 is 140° ～179°, most of the light is reflected by the microstructure dot 440 to emit light to the display space 212 (the proportion of the light is about 60% or more), and a small portion of the light. It will be refracted and reflected in the opposite direction to the display surface 403 of the transparent display (the ratio of light emission is about 40% or less).

Furthermore, in the above embodiments, the fabrication of the microstructured dots may be formed by a chemical etching process, a sand blasting process, a laser process, a biting process, or a trowel process. Further, the method of fabricating the above-described microstructure dot is not limited thereto, and other examples include, for example, etching, V-cut, Stamper, internal diffusion, and the like.

In addition, referring to FIG. 1, in an option of the present invention, the cabinet 200 is covered with a reflective layer 213 corresponding to the inner wall surface of the display space 212. The reflective layer 213, such as a metal coating, reflects light back to the transparent display 400 to more clearly present the outline of the display product 214 through the transparent display 400.

Regarding the liquid crystal display panel 420 (or 420') of the present invention, referring to Fig. 7, FIG. 7 is a schematic view showing the liquid crystal display panel 420 (or 420') of the transparent display 400 of the present invention. The liquid crystal display panel 420 (or 420') is provided with a thin film transistor (TFT) array substrate 421 and a color filter substrate 423, and a liquid crystal layer 422 is bonded between the TFT array substrate 421 and the color filter substrate 423. The TFT array substrate 421 includes a plurality of TFTs, a plurality of gate lines and data lines configured to cross each other to define a primitive region, and a plurality of primitive electrodes (not shown) disposed in the primitive region. The color filter substrate 423 includes a lattice-like black matrix for masking light, and red, green, and blue color filter layers (not shown) formed between the black matrices. The liquid crystal display panel 420 (or 420') further includes two polarizing plates 424, 425. The polarizing plates 424, 425 are respectively located on the outer sides of the thin film transistor (TFT) array substrate 421 and the color filter substrate 423 liquid crystal display panel 420 for polarizing light. Further, in order to improve visual transparency, the liquid crystal display panel 420 does not have a reflective sheet and a light diffusing sheet in one embodiment.

The present invention does not limit the manner in which the transparent display is disposed on the outer cover. For example, as shown in FIG. 1, the transparent display 400 may be embedded in one of the openings 310 of the outer cover 300, or the outer cover 300 is only an outer frame, or The cover is a transparent cover without openings, and the transparent display is attached to the transparent cover (not shown).

In addition, the area of the transparent display 400 relative to the transparent cover is not intentionally limited. Therefore, the transparent display 400 can be substantially equivalent to the area of the transparent cover or only the partial area of the transparent cover.

The above light guide plate of the present invention is not limited to the thickness thereof, the degree of softness and hardness, or the change in material selection. The material of the light guide plate may be, for example, polyethylene terephthalate (PET), polycarbonate (PC), or poly(methyl methacrylate) (PMMA). .

The light source 410 of the present invention is not limited to the form, and may be, for example, the technical field of a Light Emitting Diode (LED), an Organic Light-Emitting Diodes (OLED), a lamp or a bulb. In this embodiment, the light source 410 is, for example, a LED light bar, and includes a plurality of light emitting diode elements 411 (LEDs) mounted on a circuit board 412 (PCB).

In summary, the article display cabinet, the transparent display and the light guide plate of the present invention can see the information on the display surface of the transparent display, and can also see the display product located behind the transparent display through the display surface of the transparent display. By displaying vivid video and audio content on the display surface, the customer's willingness to purchase and more ways of displaying product marketing are increased.

The present invention is not limited to the embodiments of the present invention, and various modifications and refinements may be made without departing from the spirit and scope of the present invention. This is subject to the definition of the scope of the patent application.

100, 101‧‧‧ item display cabinet

200‧‧‧ cabinet

210‧‧‧ Groove

211‧‧‧ interval

212‧‧‧Display space

213‧‧‧reflective layer

214‧‧‧Show products

300‧‧‧ Cover

310‧‧‧ openings

400, 401‧‧‧ transparent display

403‧‧‧ display surface

404‧‧‧Information

410‧‧‧Light source

411‧‧‧Lighting diode components

412‧‧‧ circuit board

420, 420'‧‧‧ LCD panel

421‧‧‧Film transistor array substrate

422‧‧‧Liquid layer

423‧‧‧Color filter substrate

424, 425. . . Polarizing plate

430, 430’. . . Single light guide

431. . . First illuminating surface

432. . . Second illuminating surface

433. . . Glossy surface

440. . . Microstructure dot

441. . . Center of mind

442. . . circumference

L1, L2. . . Light output

H, H1 ~ H4. . . Vertical step difference

P, P1 ~ P4. . . caliber

G, G1 ~ G3. . . Spacing distance

M1, M2. . . position

S. . . Two lines

θ. . . Angle

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

1 is a schematic exploded view of an article display cabinet of the present invention in an embodiment.

FIG. 2A is a combination diagram of the article display cabinet of FIG. 1.

FIG. 2B is a partial enlarged view of the second embodiment A at position M1.

Figure 3 is a front elevational view of the article display cabinet of Figure 1.

FIG. 4 is a schematic exploded view of the article display cabinet of the present invention in another embodiment.

FIG. 5A is a combination diagram of the article display cabinet of FIG. 4.

FIG. 5B is a partial enlarged view of the fifth image at position M2.

6A to 6E are partial schematic views showing the microstructure dots of the light guide plate of the present invention under various changes.

FIG. 7 is a schematic view showing a liquid crystal display panel of the transparent display of the present invention.

100. . . Item display cabinet

200. . . Cabinet

210. . . Groove

211. . . interval

212. . . Exhibition space

213. . . Reflective layer

214. . . demo product

300. . . Cover

310. . . Opening

400. . . Transparent display

410. . . light source

411. . . Light-emitting diode component

412. . . Circuit board

420. . . LCD panel

430. . . Single light guide

432. . . Second illuminating surface

433. . . Glossy surface

440. . . Microstructure dot

Claims (37)

An item display cabinet comprising: a cabinet body including a recess; and a cover covering the recess and enclosing the display space for placing at least one display product; a display disposed on the display The cover includes: a light source; a liquid crystal display panel having transparency; and a single light guide plate directly stacked on one side of the liquid crystal display panel, comprising: a first light emitting surface; a second light emitting surface, Opposite the first light-emitting surface, the first light-emitting surface is away from the display space, and the second light-emitting surface is arranged with a plurality of microstructured dots, wherein the distribution of the microstructure dots is sufficiently dispersed to be clear through the liquid crystal display panel. Presenting the display product, the total area of the microstructured dots is 0.5% to 78.5% of the area of the second light-emitting surface; and a light-incident surface adjacent to the first light-emitting surface and the second light-emitting surface, Receiving light of the light source, and emitting light toward the first light emitting surface and the second light emitting surface, wherein the light source outputting the light from the first light emitting surface is larger than the light source outputting the second light emitting surface Out The amount of light. The article display cabinet of claim 1, wherein each of the microstructured dots has a vertical step, a diameter, and any two adjacent microstructure dots having a separation distance, and the vertical difference is less than the separation distance. The item display cabinet of claim 2, wherein the single light guide plate is located between the display space and the display panel, and the second light-emitting surface is between the display panel and the first light-emitting surface. The item display cabinet of claim 1, wherein the light source outputted by the first light exiting surface and the light output output by the light source by the second light emitting surface are 6:4. The item display cabinet of claim 2, wherein the display panel is located between the display space and the single light guide plate, and the first light emitting surface is between the display panel and the second light emitting surface. The item display cabinet of claim 1, wherein the light source outputted by the first light exiting surface and the light output output by the light source by the second light emitting surface are 6:4. The item display cabinet of claim 2, wherein the cabinet body is covered with a reflective layer on the inner wall surface of the display space. The item display cabinet of claim 2, wherein the microstructured dots are spaced apart from each other by a distance. The item display cabinet of claim 2, wherein the distance between the microstructured dots is inversely proportional to the distance from the light incident surface. The item display cabinet of claim 2, wherein the micro-structure dots have the same caliber. The item display cabinet of claim 2, wherein the diameters of the microstructured dots are proportional to the distance from the light incident surface. The item display cabinet of claim 2, wherein the vertical sections of the microstructured dots are identical. The item display cabinet of claim 2, wherein the vertical section difference of the microstructured dots is proportional to the distance from the light incident surface. The item display cabinet of claim 2, wherein a ratio of the vertical step difference to the aperture of each of the microstructured dots is 0.4 to 0.9. The article display cabinet of claim 2, wherein the microstructured dots are circular or circular bumps having a center and a circumference from which the two lines of the circumference on both sides of the center of the circle are connected The angle is between 140 ° and 179 °. A light guide plate comprising: a first light-emitting surface; a second light-emitting surface disposed opposite the first light-emitting surface, and the second light-emitting surface includes a plurality of microstructured dots, wherein a total area of the microstructured dots occupies an area of the second light-emitting surface 0.5%~78.5%; and a light incident surface adjacent to the first light emitting surface and the second light emitting surface for receiving light projected by one of the light sources, wherein the light output by the first light emitting surface is It is larger than the amount of light output by the second light-emitting surface. The light guide plate of claim 16, wherein each of the microstructured dots has a vertical step, a diameter, and any two adjacent microstructure dots having a separation distance, and the vertical difference is less than the separation distance. The light guide plate of claim 16, wherein the amount of light emitted by the first light-emitting surface and the amount of light output by the second light-emitting surface are 6:4. The light guide plate of claim 17, wherein the spaced distances of the microstructured dots are identical to each other. The light guide plate of claim 17, wherein the distance between the microstructured dots is inversely proportional to a distance from the light incident surface. The light guide plate of claim 17, wherein the calibers of the microstructured dots coincide with each other. The light guide plate of claim 17, wherein the aperture of the microstructured dots is proportional to a distance from the light incident surface. The light guide plate of claim 17, wherein the vertical step differences of the microstructured dots coincide with each other. The light guide plate of claim 17, wherein the vertical step of the microstructure dots is proportional to a distance from the light incident surface. The light guide plate of claim 17, wherein the ratio of the vertical step difference to the aperture of each of the microstructured dots is 0.4 to 0.9. The light guide plate of claim 17, wherein the microstructured dots are circular or circular bumps having a center and a circumference, and the angle between the two lines connecting the circumferences of the center of the circle from the center of the circle It is 140°~179°. a transparent display comprising: a light source; a liquid crystal display panel having transparency; and a single light guide plate directly stacked on one side of the liquid crystal display panel, comprising: a first light emitting surface; a second light emitting surface, Opposite to the first light-emitting surface, wherein the second light-emitting surface is arranged with a plurality of microstructured dots, wherein a total area of the microstructure dots accounts for an area of the second light-emitting surface 0.5%~78.5%; a light incident surface adjacent to the first light emitting surface and the second light emitting surface for receiving a light of a light source, and facing the first light emitting surface and the second light emitting surface The light is emitted, wherein the light source outputs the amount of light emitted by the first light emitting surface that is greater than the light output amount of the light source outputted by the second light emitting surface. The transparent display of claim 27, wherein the amount of light emitted by the first light-emitting surface and the amount of light output by the second light-emitting surface are 6:4. The transparent display of claim 27, wherein each of the microstructured dots has a vertical step, a diameter, and any two adjacent microstructure dots having a separation distance, and the vertical difference is less than the separation distance. The transparent display of claim 29, wherein the spaced apart distances of the microstructured dots are identical. The transparent display of claim 29, wherein the spacing distance between the microstructured dots is inversely proportional to the distance from the light incident surface. The transparent display of claim 29, wherein the apertures of the microstructured dots coincide with each other. The transparent display of claim 29, wherein the aperture of the microstructured dots is proportional to a distance from the light incident surface. The transparent display of claim 29, wherein the vertical step differences of the microstructured dots coincide with each other. The transparent display of claim 29, wherein the vertical step of the microstructure dots is proportional to a distance from the light incident surface. The transparent display of claim 29, wherein a ratio of the vertical step of each of the microstructure dots to the aperture is 0.4 to 0.9. The transparent display of claim 29, wherein the microstructure dots are circular or circular bumps having a center and a circumference from which an angle connecting the two lines of the circumference on both sides of the center of the circle is connected It is 140°~179°.