WO2024004344A1

WO2024004344A1 - Display device and liquid crystal display device

Info

Publication number: WO2024004344A1
Application number: PCT/JP2023/015429
Authority: WO
Inventors: 諒宮尾
Original assignee: 株式会社ジャパンディスプレイ
Priority date: 2022-07-01
Filing date: 2023-04-18
Publication date: 2024-01-04

Abstract

The present invention addresses the problem of realizing a large-screen display device by disposing a plurality of display devices in parallel. The specific means are as described below. Provided is a display device including a first display device 1 and a second display device 2 that are disposed in parallel. The display device is characterized in that: the first display device 1 has a configuration in which a first transparent display panel 6 is sandwiched between a first transparent protection plate 500 and a second transparent protection plate 600; an end of the first transparent display panel 6 is retreated more inward than ends of the first transparent protection plate 500 and the second transparent protection plate 600; the second display device 2 has a configuration in which a second transparent display panel 7 is sandwiched between a third transparent protection plate 500 and a fourth transparent protection plate 600; the second transparent display panel 7 includes a protrusion protruding more outward than ends of the third transparent protection plate 500 and the fourth transparent protection plate 600; and the protrusion of the second transparent display panel 7 is sandwiched between the first transparent protection plate 500 and the second transparent protection plate 600.

Description

Display device and liquid crystal display device

The present invention relates to a display device, and particularly to a transparent display device using a liquid crystal display device.

There is a need for transparent display devices that allow the background to be seen, such as glass. In a transparent display device, for example, an image displayed on the front side can be viewed overlaid on a background on the back side. Furthermore, even in areas where no image is displayed, the background image can be viewed through the glass. Such a transparent display device can be realized using, for example, a liquid crystal display device.

Patent Documents 1 to 3 describe configurations for realizing transparent liquid crystal display devices using so-called polymer-dispersed liquid crystals.

JP2021-92748A JP2021-92702A JP2021-32938A

In transparent liquid crystal display devices and the like, problems with brightness gradients tend to occur, making it difficult to increase the screen size. When increasing the size of the screen, it is possible to arrange a plurality of transparent display devices in parallel. When arranging a plurality of transparent display devices in parallel, a means is desired that is easy to assemble, does not impair image quality, and does not impair reliability.

On the other hand, a liquid crystal display device requires a frame area for sealing material and the like. Since the screen is interrupted by the presence of this frame area, it may be difficult to display a natural image simply by arranging a plurality of transparent liquid crystal display devices.

Additionally, it has been difficult to ensure sufficient reliability when configuring a curved display device or a circular display device using a transparent display device. The present invention aims to solve the above problems.

The present invention solves the above problems, and typical means are as follows.

(1) A display device in which a first display device and a second display device are arranged in parallel, wherein the first display device has a first transparent display panel sandwiched between a first transparent protection plate and a second transparent protection plate. The end portion of the first transparent display panel is set back inward from the end portions of the first transparent protection plate and the second transparent protection plate, and the second display device has a 2 transparent display panels are sandwiched between a third transparent protection plate and a fourth transparent protection plate, and the second transparent display panel is further away from the ends of the third transparent protection plate and the fourth transparent protection plate. A display device having a protrusion that protrudes outward, the protrusion of the second transparent display panel being sandwiched between the first transparent protection plate and the second transparent protection plate.

(2) A liquid crystal display device in which a first liquid crystal display device and a second liquid crystal display device are arranged in parallel, wherein the first liquid crystal display device has a first transparent liquid crystal display panel and a first transparent protection plate. The first transparent display panel is sandwiched between second transparent protection plates, and the end portion of the first transparent display panel is set back inward from the end portions of the first transparent protection plate and the second transparent protection plate. The second liquid crystal display device has a structure in which a second transparent liquid crystal display panel is sandwiched between a third transparent protective plate and a fourth transparent protective plate, and an end portion of the second transparent liquid crystal display panel is connected to the third transparent protective plate. It has a protrusion that protrudes outward from the end of the plate and the fourth transparent protection plate,
A liquid crystal display device, wherein the protruding portion of the second transparent liquid crystal display panel is sandwiched between the first transparent protection plate and the second transparent protection plate.

(3) A display device in which a first display device and a second display device are arranged in parallel, wherein the first display device has a first transparent display panel and a first adhesive, a first transparent protective plate and a second In the second display device, a second transparent display panel and a second adhesive are sandwiched between a third transparent protective plate and a fourth transparent protective plate, and an end of the first adhesive is sandwiched between the second transparent protective plate and the second adhesive. The second transparent display panel is set back inward from the ends of the first display device, and the second transparent display panel has a protrusion that projects outward from the ends of the third transparent protection plate and the fourth transparent protection plate. The protruding portion is sandwiched between the first transparent protection plate and the second transparent protection plate, and overlaps with the first transparent display panel, and the first transparent display panel has a first display area and a first transparent protection plate. the second transparent display panel has a second display area and a second frame area, the first frame area overlaps the second display area, and the second frame area overlaps the first frame area; A display device characterized by overlapping a display area.

FIG. 2 is a front view of a transparent liquid crystal display device. FIG. 2 is a side view of a transparent liquid crystal display device. FIG. 3 is a cross-sectional view showing the operation of a transparent liquid crystal display device. FIG. 3 is a perspective view of a light source. FIG. 1 is a perspective view of a transparent liquid crystal display device. FIG. 3 is a plan view of a case where two transparent liquid crystal display panels are placed side by side to create a large screen. FIG. 2 is a plan view of a large-screen liquid crystal display device formed by arranging two transparent liquid crystal display devices in accordance with Example 1; 8 is a sectional view taken along line AA in FIG. 7. FIG. FIG. 2 is a cross-sectional view of two transparent liquid crystal display devices before assembly. 3 is a cross-sectional view of two transparent liquid crystal display devices before assembly according to another example of the first embodiment. FIG. FIG. 3 is a cross-sectional view of another example of the first embodiment. FIG. 2 is a plan view of a case where three transparent liquid crystal display devices are arranged in parallel to form a large screen according to the first embodiment. 13 is a cross-sectional view of three transparent liquid crystal display devices forming FIG. 12. FIG. FIG. 3 is a cross-sectional view of each transparent liquid crystal display device when a large screen is configured by four transparent liquid crystal display devices. FIG. 2 is a plan view of two transparent liquid crystal display devices arranged vertically to form a large screen. 16 is a sectional view taken along line BB in FIG. 15. FIG. FIG. 2 is a cross-sectional view showing a first process of forming a curved transparent liquid crystal display device. FIG. 3 is a cross-sectional view illustrating a second process for forming a curved transparent liquid crystal display device. FIG. 3 is a cross-sectional view of a large-screen curved transparent liquid crystal display device formed by combining two curved transparent liquid crystal display devices according to Example 2; 20 is a cross-sectional view of an individual curved transparent liquid crystal display for forming the curved transparent liquid crystal display of FIG. 19; FIG. 3 is a cross-sectional view of a circular transparent liquid crystal display device formed according to Example 2. FIG. 22 is a cross-sectional view of a curved transparent liquid crystal display device that constitutes the circular transparent liquid crystal display device of FIG. 21. FIG. FIG. 7 is a plan view showing problems in Example 3; 3 is a plan view of a transparent crystal display device according to Example 3. FIG. FIG. 7 is a cross-sectional view showing the principle of Example 3. FIG. 3 is a perspective view of a transparent liquid crystal display device of Example 3. 25 is a sectional view taken along the line CC in FIG. 24. FIG. 28 is a cross-sectional view of each transparent liquid crystal display device constituting the transparent liquid crystal display device of FIG. 27. FIG. FIG. 7 is a cross-sectional view showing a state in which three transparent liquid crystal display devices are arranged to form a large screen according to Example 3. FIG. 7 is a plan view showing a state in which three transparent liquid crystal display devices are arranged to form a large screen according to Example 3. 31 is a sectional view taken along line DD in FIG. 30. FIG. 31 is a cross-sectional view of each transparent liquid crystal display device configuring FIG. 30. FIG. FIG. 4 is a cross-sectional view showing Example 4. FIG. 4 is a cross-sectional view showing a specific configuration of Example 4. 35 is a cross-sectional view of each curved transparent liquid crystal display device configuring FIG. 34. FIG. FIG. 4 is a cross-sectional view of a circular transparent liquid crystal display device formed according to Example 4. FIG. 7 is a perspective view showing a state in which the display areas of two transparent liquid crystal display devices are seamlessly arranged according to Example 5. FIG. 7 is a cross-sectional view showing the first process of another assembly method for realizing the configurations of Examples 1 and 2. FIG. 39 is a cross-sectional view of the process following FIG. 38; FIG. 2 is a cross-sectional view of a completed transparent liquid crystal display device. FIG. 7 is a cross-sectional view showing the first process of another assembly method for realizing the configurations of Examples 3 and 4. FIG. 42 is a cross-sectional view of the process following FIG. 41; FIG. 2 is a cross-sectional view of a completed transparent liquid crystal display device.

The content of the present invention will be explained in detail below using Examples.

FIG. 1 is a front view of a transparent liquid crystal display device, and FIG. 2 is a side view. In Figures 1 and 2, there is no backlight on the back of the display area, and the substrate is made of transparent glass, so light normally passes through and the back of the transparent liquid crystal display is visible. Rukoto can.

The transparent liquid crystal display device shown in FIGS. 1 and 2 has a single display device 1, but the functions described below are achieved by arranging two liquid crystal display panels side by side, as will be explained later. The same applies when configuring a large-screen transparent liquid crystal display device. By the way, the liquid crystal display panel is sandwiched between transparent protection plates from the back and front for mechanical protection or to give the liquid crystal display panel a curved surface. In this specification, for convenience, the state where the device is sandwiched between transparent protective plates is referred to as a transparent liquid crystal display device (for example, 1), and the state where it is not sandwiched between transparent protective plates is referred to as a transparent liquid crystal display panel (for example, 6). be.

In FIG. 1, a light source 40 as a side light,

driver ICs

51, 52, etc. are arranged in a lower pedestal 5000. Since the display device 1 is transparent, the opposite side of the display device 1 can be seen like a glass window. Further, the image displayed on the display device 1 can be viewed from either the back side or the front side. Therefore, the image displayed on the display device 1 can give the impression that it stands out in the background.

1 and 2 show examples of how the transparent liquid crystal display device is used, and the transparent liquid crystal display device can be used for various other purposes. For example, by pasting it on a window glass, it is normally used as a window glass, and an image can be displayed on the window when necessary. Furthermore, when used as a display device for a car, it is usually used as a window through which the outside can be seen, and if necessary, an image can be displayed on a transparent medium.

FIG. 3 is a cross-sectional view showing the operation of the transparent liquid crystal display device. In FIG. 3, a liquid crystal 300 is sandwiched between a TFT substrate 100 on which pixel electrodes, signal lines, TFTs (Thin Film Transistors), etc. are arranged, and a counter substrate 200 on which a common electrode, a black matrix, etc. are formed. A light guide plate 400 is arranged on the counter substrate 200. The surface of the light guide plate 400 may be subjected to a surface treatment to prevent fingerprints and the like from adhering when touched with a finger. This surface treatment is also called AF (Anti-finger) treatment.

The counter substrate 200 and the light guide plate 400 are bonded together using a transparent adhesive 70. For example, as the transparent adhesive 70, OCA (Optical Clear Adhesive) 70 or OCR (Optical Clear Resin), which will be described later, can be used. This embodiment will be described using OCA as an example. OCA70 is a transparent adhesive sheet and has a refractive index close to that of glass. Therefore, reflection at the interface between the OCA 70 and the counter substrate 200 or the light guide plate 400 can be minimized. The thickness of the OCA 70 is, for example, 0.1 mm. Further, the light guide plate 400 attached to the counter substrate 200 shown in FIG. 3 corresponds to a second transparent protection plate 600 described later. Although not shown in FIG. 3, a light guide plate 400 may be further provided on the TFT substrate 100 via the OCA 70, and in this case as well, the light guide plate 400 attached to the TFT substrate 100 is a first transparent protection plate described later. It is equivalent to 500.

The liquid crystal display device shown in FIG. 3 is driven in a so-called field sequential manner, so there is no color filter. Since no color filter is used, the light transmittance of the display area can be increased. A display area is formed in a portion where the TFT substrate 100 and the counter substrate 200 overlap, and a terminal region 30 is formed in a portion of the TFT substrate 100 that does not overlap with the counter substrate 200.

In FIG. 3, a TFT substrate 100 and a counter substrate 200 are bonded together with a transparent sealant 60, and a liquid crystal 300 is sealed inside. The liquid crystal 300 in FIG. 3 is a so-called polymer dispersed liquid crystal. The liquid crystal forming the liquid crystal layer 300 normally transmits light, but when a voltage is applied between the pixel electrode formed on the TFT substrate 100 and the common electrode formed on the counter substrate 200, the liquid crystal molecules 301 changes its orientation and scatters light. An image can be formed by controlling the scattering effect of the liquid crystal molecules 301 for each pixel. This image can be viewed from both the front and rear sides of the liquid crystal display panel.

In FIG. 3, the TFT substrate 100 is formed larger than the counter substrate 200, and the portion where the TFT substrate 100 and the counter substrate 200 do not overlap is a terminal region 30. A light source 40 is arranged in the terminal region 30 so as to face the side surface of the counter substrate 200 . The light source 40 is composed of an LED 42 and a lens 41, as shown in FIG.

As shown in FIG. 4, the light source 40 has a configuration in which a plurality of LEDs 42 are arranged on the side surface of a lens 41. The light emitted from the LED 42 is converged or diverged by the lens 41, and enters the display area of the transparent liquid crystal display device from the side surface of the counter substrate 200 or the light guide plate 400, as shown in FIG.

The LED 42 includes three LED chips that generate red, green, and blue light for each package. The liquid crystal display device shown in FIG. 3 is driven in a field sequential manner. In other words, a color image is displayed by displaying a red image, a green image, and a blue image in a time-division manner. In the drawings below, the light source 40 is shown as a combination of an LED 42 and a lens 41.

Returning to FIG. 3, the light from the light source 40 enters the inside of the liquid crystal display panel through the side surface of the counter substrate 200 and the light guide plate 400, or through the sealing material 60. The incident light collides with liquid crystal molecules 301 in the liquid crystal layer 300 while repeating total reflection. When light impinges on liquid crystal molecules 301 in a pixel with a voltage applied between the pixel electrode and the common electrode, it is scattered as shown in FIG. On the other hand, within a pixel where no voltage is applied between the pixel electrode and the common electrode, light travels straight. As a result, the scattering of the light that has entered the liquid crystal layer 300 is controlled for each pixel, so that an image is formed.

In FIG. 3, a reflector 350 is attached to the side surface of the TFT substrate 100, the counter substrate 200, and the light guide plate 400 on the side facing the light source 40, and reflects the light arriving at the end toward the display area side. do. Note that the description of the reflector 350 is omitted from FIG. 5 onwards. In FIG. 3,

driver ICs

51 and 52 are arranged in the terminal area 30 alongside the light source 40. Since the liquid crystal display device shown in FIG. 3 is driven in a field sequential manner, data processing is performed at three times the speed of a normal driving method, so that the driver IC 50 generates a large amount of heat.

FIG. 5 is a perspective view of a transparent liquid crystal display device used in the present invention. In FIG. 5, a TFT substrate 100 and a counter substrate 200 are arranged to overlap. As shown in FIG. 3, a liquid crystal is sandwiched between the TFT substrate 100 and the counter substrate 200. A transparent light guide plate 400 made of glass is pasted on the counter substrate 200 to also serve as mechanical protection. The thickness of each of the TFT substrate 100, counter substrate 200, and light guide plate 400 is, for example, 0.5 mm or 0.7 mm.

The TFT substrate 100 is formed larger than the counter substrate 200, and the portion of the TFT substrate 100 that does not overlap with the counter substrate 200 serves as a terminal region 30. In the terminal region 30 , a light source 40 is arranged on the side surface of the counter substrate 200 and the light guide plate 400 . The light that enters the side surfaces of the counter substrate 200 and the light guide plate 400 from the light source 40 forms an image as explained in FIG. 3 while repeating total reflection at the interface between the TFT substrate 100, the counter substrate 200, and the light guide plate 400. .

In FIG. 5, a display area 10 is formed in the overlapped portion of the TFT substrate 100 and the counter substrate 200, but the periphery of the display area 10 is a frame area 20. In the frame area 20, transparent sealing material, scanning line lead lines, etc. are arranged. A feature of the liquid crystal display panel shown in FIG. 5 is that the light source 40 is disposed over the entire side surface of the opposing substrate 200 and the light guide plate 400 along the terminal region 30. That is, the light from the light source 40 also enters a portion corresponding to the frame region 20 where no pixel electrode is formed. Thereby, uneven brightness in the display area 10 can be suppressed.

In FIG. 5, in addition to the light source 40,

driver ICs

51 and 52 are arranged in the terminal area 30. A driver IC 51 for video signals is arranged in the center of the terminal area 30, and driver ICs 52 for scanning signals are arranged on both sides thereof. A flexible wiring board for supplying signals and power is connected to the terminal area 30, but is omitted in FIG. 5.

In transparent liquid crystal display devices such as those shown in FIGS. 3 to 5, when attempting to increase the screen size, uneven brightness on the screen becomes a problem. Therefore, in order to obtain a large-screen transparent liquid crystal display device, it is conceivable to arrange a plurality of transparent liquid crystal display devices side by side. FIG. 6 is an example. In FIG. 6, two transparent liquid

crystal display panels

6 and 7 are arranged in parallel. In FIG. 6, one image is formed by two display areas 10. The boundary between the two transparent liquid

crystal display panels

6 and 7 is 11.

Although FIG. 6 shows only two transparent liquid crystal display panels arranged in parallel, in an actual display device, these two transparent liquid crystal display panels need to be fixed. Incidentally, the transparent liquid crystal display panel is mainly composed of a TFT substrate 100 and a counter substrate 200, and the thickness of each substrate is 0.5 mm or 0.7 mm.

In the present invention, in order to improve mechanical strength, a first transparent protection plate 500 is arranged on the back surface of the TFT substrate 100 for the transparent liquid crystal display panel shown in FIG. A transparent protection plate 600 is arranged to configure a transparent liquid crystal display device. The second transparent protection plate 400 corresponds to the light guide plate 400 shown in FIG. The transparent protection plate is made of glass or transparent resin, and has a thickness of, for example, 3 mm. Both the first transparent protection plate 500 and the second transparent protection plate 600 are attached to each transparent liquid crystal display panel. Then, the two transparent liquid

crystal display devices

1 and 2 are assembled so as to fit into each other at the side where the two transparent liquid crystal display panels are butted against each other. According to the configuration of the present invention, there are advantages such as, for example, it is possible to manufacture a small transparent display device in advance and assemble it into a large transparent display device on site.

FIG. 7 is a plan view of two transparent liquid

crystal display devices

1 and 2 arranged in parallel according to the present invention. A boundary 11 between the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 is shown by a dotted line. In the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2, the second transparent protection plate 600 also covers the light source 40 and the terminal area 30, as shown by hatching in FIG. protected.

FIG. 8 is a sectional view taken along line AA in FIG. 7. The first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 in FIG. 8 have the same structure. A first transparent protection plate 500 is attached under the TFT substrate 100 using OCA 70, and a second transparent protection plate 600 is attached above the counter substrate 200 using OCA 70. In FIG. 8, the width in the lateral direction (x direction) of the first transparent protective plate 500 and the second transparent protective plate 600 of the first transparent liquid crystal display device 1 is the same as that of the first transparent protective plate 500 of the second transparent liquid crystal display device 2. and larger than the width of the second transparent protection plate 600 in the lateral direction (x direction). The second transparent liquid crystal display panel 7 has a protrusion that fits into a recess formed by the first transparent protection plate 500 and the second transparent protection plate 600 of the first transparent liquid crystal display device 1. ing.

FIG. 9 is a cross-sectional view of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 before assembly. In FIG. 9, the protruding portion of the second transparent liquid crystal display device 2 fits into the recessed portion of the first transparent liquid crystal display device 1. As shown in FIG. The depth x1 of the mating portion in the lateral direction (x direction) needs to be a value that allows the two transparent liquid crystal display devices to be stably fixed.

In FIG. 9, an OCA 70 is attached to the protrusion of the second transparent liquid crystal display device 2. Note that the OCA 70 may cover the tip of the protrusion of the transparent liquid crystal display panel 7. Since the OCA 70 has adhesive properties, it may be difficult to fit the protrusion in the configuration shown in FIG. 9 . In such a case, for example, as shown in FIG. 10, OCR (Optical Clear Resin) is applied to the protruding portion of the second transparent liquid crystal display device 7 and the abutting portion with the first transparent liquid crystal display device 6, A configuration may be adopted in which UV curing is performed after fitting.

FIG. 10 is a cross-sectional view showing a state in which OCR 80 is applied to the protruding portion of the second transparent liquid crystal display device 2 and the portion that abuts against the first transparent liquid crystal panel 6. Since the OCR 80 is a liquid before being cured by ultraviolet rays, it can operate relatively smoothly even when the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 are fitted together. Note that OCA 70 may be used if it is possible to paste it. When using the OCA 70, it is also preferable to arrange the OCA 70 not only at the fitting portion but also in front of the abutting portion of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2.

FIG. 11 is a sectional view showing a state in which the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 shown in FIG. 10 are fitted together. In FIG. 11, a thin layer of OCR exists at the abutting portion of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2, but the thickness x2 of this layer is 100 μm or less, and in many cases, 50 μm or less. Therefore, the boundary between the first transparent liquid crystal display device and the second transparent liquid crystal display device hardly affects visibility. On the other hand, since the OCR 80 fills small irregular gaps at the abutting portion, the boundary portion becomes less noticeable. As described above, various configurations are possible for the fitting part, but in the following explanation, it will not be specified whether the fitting part has the structure shown in FIG. 8, FIG. It will be explained as follows.

FIG. 12 is a plan view of three transparent liquid

crystal display panels

6, 7, and 8 arranged in parallel to form a large screen using the present invention. The boundaries of the second transparent protection plates 600 of each of the transparent liquid

crystal display devices

1, 2, and 3 are indicated by solid lines 12. A boundary 11 between the transparent liquid

crystal display panels

6, 7, and 8 is shown by a dotted line. The transparent protection plate 600 also covers the light source 40 and the terminal area 30. The first, second, and third transparent liquid

crystal display panels

6, 7, and 8 have the same size. However, the size of the second transparent protection plate 600 in the x direction is different. The size of the transparent protection plate 600 in the lateral direction (x direction) is in the order of first transparent liquid crystal display device>second transparent liquid crystal display device>third transparent liquid crystal display device. This is to form a mating structure.

FIG. 13 is a cross-sectional view of the first transparent liquid crystal display device 1, the second transparent liquid crystal display device 2, and the third transparent liquid crystal display device 3 that realize the structure of FIG. 12. In the figures after FIG. 13, the first transparent liquid crystal display panel 6, the second transparent liquid crystal display panel 7, the third transparent liquid crystal display panel 8, etc. are simply illustrated as one plate for easy understanding. In FIG. 13, the second transparent liquid crystal display device 2 is fitted into the first transparent liquid crystal display device 1, and the third transparent liquid crystal display device 3 is fitted into the second transparent liquid crystal display device 2. In FIG. 13, the widths of the first transparent protection plate 500 and the second transparent protection plate 600 in the lateral direction (x direction) are such that the first transparent liquid crystal display device>the second transparent liquid crystal display device>the third transparent liquid crystal display device. It's in order.

FIG. 14 is a cross-sectional view of four transparent liquid

crystal display panels

6, 7, 8, and 9 arranged in parallel to form a transparent liquid crystal display device that is long in the horizontal direction (x direction). In FIG. 14, the second transparent liquid crystal display device 2 is fitted to the first transparent liquid crystal display device 1, the fourth transparent liquid crystal display device 4 is fitted to the second transparent liquid crystal display device 2, and the fourth transparent liquid crystal display device 4 is fitted to the first transparent liquid crystal display device 1. The third transparent liquid crystal display device 3 is configured to fit therein. In FIG. 14, all the transparent liquid crystal display panels from the first transparent liquid crystal display panel 6 to the fourth transparent liquid crystal display panel 9 have the same structure. Further, the second transparent liquid crystal display device 2 and the fourth transparent liquid crystal display device 4 have the same structure. That is, according to the present invention, by creating three types of transparent liquid crystal display devices, it is possible to create a transparent liquid crystal display device that is as long as desired in the horizontal direction by connecting an arbitrary number of transparent liquid crystal display devices. .

The above explanation is for the case where transparent liquid crystal display panels are arranged horizontally to form a large-screen transparent liquid crystal display device. In the configuration of the present invention, as shown in FIG. 15, a large screen can also be configured by arranging transparent liquid crystal display devices in the vertical direction (y direction). However, due to the characteristics of the transparent liquid crystal display device used in the present invention, up to two can be connected in the vertical direction.

In FIG. 15, the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 have the same size. However, the size in the vertical direction (y direction) of the second transparent protective plate 600 in the first transparent liquid crystal display device 1 is smaller than the size in the vertical direction (y direction) of the second transparent protective plate 600 in the second transparent liquid crystal display device 2. It's also big. This is to form a mating structure.

FIG. 16 is a sectional view taken along line BB in FIG. 15. In FIG. 16, the first transparent protection plate 500 and the second transparent protection plate 600 also cover the light sources 40 and terminal areas 30 of the transparent liquid

crystal display panels

6 and 7. The size of the first transparent protection plate 500 and the second transparent protection plate 600 in the y direction is larger in the first transparent liquid crystal display device 1 than in the second transparent liquid crystal display device 2 . The protrusion of the transparent liquid crystal display panel 7 of the second transparent liquid crystal display device 2 fits into the recess formed by the first transparent protection plate 500 and the second transparent protection plate 600 of the first transparent liquid crystal display device 1. It has become. The fitting method and its configuration are the same as those described with reference to FIGS. 8 to 11, so a description thereof will be omitted.

By combining the configuration of FIG. 15 with the configurations of FIGS. 7 to 14, a transparent liquid crystal display device with an even larger screen can be formed.

The present invention is also applicable to curved transparent liquid crystal display devices. 17 and 18 are cross-sectional views showing a process for forming a curved transparent display device. In FIG. 17, a flat transparent liquid crystal display panel 6 is adhered to the inner surface of a curved second transparent protection plate 600 by, for example, OCA. Since the second transparent protection plate 600 is thicker than the transparent liquid crystal display panel 6, the transparent liquid crystal display panel 6 curves along the inner surface of the second transparent protection plate 600.

FIG. 18 is a cross-sectional view showing this state. In FIG. 18, a curved first transparent protection plate 500 is adhered along the curved surface of the transparent liquid crystal display panel 6 formed in this manner. The thickness of the first transparent protection plate 500 is approximately the same as that of the second transparent protection plate 600, and is thicker than the thickness of the transparent liquid crystal display panel 6. Thereby, a curved transparent liquid crystal display device can be formed.

By the way, when forming a curved display device, the smaller the radius of curvature, the greater the stress and strain on the transparent liquid crystal display panel. Furthermore, when forming a large-sized curved display device, stress and distortion also increase. Therefore, the reliability of the transparent liquid crystal display device decreases. To counter this problem, an effective means is to form a plurality of small transparent liquid crystal display devices having curved surfaces and combine them to form a large transparent display device. In other words, in a divided curved display device, stress and distortion occurring in each transparent liquid crystal display panel can be reduced. The present invention can be applied to such a configuration.

FIG. 19 is a sectional view showing the first example of the second embodiment. The curved transparent liquid crystal display device of FIG. 19 is composed of a curved first transparent liquid crystal display device 1 and a curved second transparent liquid crystal display device 2. In FIG. 19, since the transparent liquid

crystal display panels

6 and 7 are divided, the stress and strain generated in the individual transparent liquid

crystal display panels

6 and 7 are small. Thereby, the reliability of the transparent liquid crystal display device as a whole can be improved.

In FIG. 19, the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are illustrated in a simplified manner. The configuration of FIG. 19 is the same as that of FIG. 8 except that the first transparent protection plate 500, the second transparent protection plate 600, the first transparent liquid crystal display panel 6, and the second transparent liquid crystal display panel 7 are curved. be.

FIG. 20 is a cross-sectional view of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 before the curved transparent liquid crystal display device of FIG. 19 is assembled. In FIG. 20, the protruding portion of the second transparent liquid crystal display device 2 fits into the recessed portion of the first transparent liquid crystal display device 1. The configuration of FIG. 20 is the same as that of FIG. 9 except that the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 are curved.

Furthermore, by fitting and combining the third, fourth, etc. curved transparent liquid crystal display devices, a larger curved transparent liquid crystal display device can be constructed. This combination method is similar to that described with reference to FIGS. 12 to 14.

FIG. 21 is a cross-sectional view showing an example in which a circular transparent display device is formed by combining four curved transparent liquid crystal display devices. When a circular transparent liquid crystal display device is formed using one transparent liquid crystal display panel, a very large stress is generated on the transparent liquid crystal display panel, reducing the reliability of the display device. As shown in FIG. 21, by configuring the transparent liquid crystal display device in parts and assembling them, the stress on each transparent liquid crystal display panel can be significantly reduced and reliability can be improved. In FIG. 21, four first transparent protection plates 500, transparent liquid

crystal display panels

6, 7, 8, and 9, and a second transparent protection plate 600 form a circle. In FIG. 21, the circular transparent liquid crystal display device includes four curved transparent liquid

crystal display devices

1, 2, 3, and 4 that are fitted into each other.

FIG. 22 is a cross-sectional view of one of the transparent liquid crystal display devices shown in FIG. 21, for example, the first transparent liquid crystal display device 1. The transparent liquid crystal display device 1 in FIG. 22 is the second transparent liquid crystal display panel in FIG. 13 or the second transparent liquid crystal display panel in FIG. The second transparent liquid crystal display panel and the fourth transparent liquid crystal display panel are the same. That is, by combining one curved transparent liquid crystal display device by fitting, a circular display device can be constructed.

FIG. 23 is a plan view when the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are arranged in parallel. 23 is the same as FIG. 6, but in FIG. 23, the display area 10 and the frame area 20 are shown separately. In the configuration shown in FIG. 23, the screen is divided by the frame area 20 over the width w2, which may give an unnatural feeling to the display screen. In FIG. 23, since the transparent sealing material 60 is used as the sealing material disposed in the frame area 20, the frame area 20 is also transparent, but no image is formed thereon.

FIG. 24 is a plan view showing the configuration of a transparent liquid crystal display device that addresses the above problems. The feature of FIG. 24 is that the display area 10 of the first transparent liquid crystal display panel 6 and the display area 10 of the second transparent liquid crystal display panel 7 are arranged so as to be continuous and seamless. That is, there is no area between display areas where no image is formed. In order to realize this configuration, for example, the second transparent liquid crystal display panel 7 is placed face down with respect to the first transparent liquid crystal display panel 6.

FIG. 25 is a cross-sectional view taken along line CC in FIG. 24. In FIG. 25, the second transparent liquid crystal display panel is arranged on the back side of the first transparent liquid crystal display panel 6. Both the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 have frame areas 20 on both sides of the display area 10 where no image is formed. The first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are bonded together with an OCA 70 near the frame area 20. A feature of FIG. 25 is that the frame area 20 of the first transparent liquid crystal display panel 6 and the display area 10 of the second transparent liquid crystal display panel 7 overlap. In other words, the frame area 20 of the second transparent liquid crystal display panel 7 and the display area 10 of the first transparent liquid crystal display panel 6 overlap.

Although no image is formed in the frame area 20, it is transparent. Therefore, with the configuration shown in FIG. 25, the frame area 20 of the first transparent liquid crystal display panel 6 can visually recognize the image of the display area 10 of the second transparent liquid crystal display panel 7, and the second transparent liquid crystal display panel The frame area 20 of No. 7 allows the image of the display area 10 of the first transparent liquid crystal display panel 6 to be viewed. Therefore, the display area 10 shown by the width AA1 in the x direction of the first transparent liquid crystal display panel 6 and the display area 10 shown by the width AA2 in the x direction of the second transparent liquid crystal display panel 7 can be arranged consecutively. I can do it.

FIG. 26 is a perspective view specifically showing the configuration of FIG. 25. In FIG. 26, the second transparent liquid crystal display panel 7 is placed upside down with respect to the first transparent liquid crystal display panel 6, and is placed so that the display area 10 and frame area 20 of each panel overlap. The back side of the TFT substrate 100 of the first transparent liquid crystal display panel 6 and the back side of the TFT substrate 100 of the second transparent liquid crystal display panel are bonded to each other via OCA in the frame area portion 20. Since the same image is displayed on each of the transparent liquid

crystal display panels

6 and 7 shown in FIG. 26 whether viewed from the front or the back, there is no problem in the visibility of the transparent liquid crystal display device as a whole. The two display areas 10 are seamlessly connected.

Here, regarding seamlessness, the problem is how accurately two display areas 10 can be joined together, and the joining accuracy can be approximately 10 μm. On the other hand, visually, if the side of the display area 10 of the first transparent liquid crystal display panel 6 and the side of the display area 10 of the second transparent liquid crystal display panel 7 match within 50 μm or less, it looks seamless.

The structure of the transparent liquid crystal display panel shown in FIGS. 25 and 26 alone is mechanically unstable. FIG. 27 shows that the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are reinforced with a first transparent protective plate 500 and a second transparent protective plate 600, and that the first transparent liquid crystal display panel 6 and the second transparent liquid crystal FIG. 3 is a cross-sectional view showing a state in which display panels 7 are combined.

In FIG. 27, the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are each simplified as one

plate

6, 7. In FIG. 27, in order to fill the level difference formed between the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7, a spacer OCA71, which is thicker than the OCA70, is placed between the lower side of the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7. It is arranged above the liquid crystal display panel 7. In FIG. 27, a convex portion of the second transparent liquid crystal display panel 7 formed on the second transparent liquid crystal display device 2 is fitted into a concave portion formed on the first transparent liquid crystal display device 1.

FIG. 28 is a cross-sectional view of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 before assembly. In FIG. 28, the protruding portion of the second transparent liquid crystal display device 2 fits into the recessed portion of the first transparent liquid crystal display device 1. In FIG. 28, the OCA 70 is disposed on the protrusion of the transparent liquid crystal display panel 7, but an OCR 80 as shown in FIGS. 10 and 11 may also be used.

The configurations shown in FIGS. 25 and 26 can also be applied when three or more transparent liquid crystal display panels are arranged in parallel. FIG. 29 is a cross-sectional view of three transparent liquid

crystal display panels

7, 8, and 9 arranged seamlessly. As described in FIG. 25 and the like, in FIG. 29 as well, display areas 10 having widths in the horizontal direction (x direction) of AA1, AA2, and AA3 are seamlessly arranged.

FIG. 30 shows a first transparent liquid crystal display device 1, a second transparent liquid crystal display device 2, and a third transparent liquid crystal display device by pasting a first transparent protection plate 500 and a second transparent protection plate 600 with respect to FIG. 29. FIG. 3 is a plan view showing a state in which a transparent liquid crystal display device having a large width in the lateral direction is formed by composing the liquid crystal display device 3 and fitting them together to form a transversely wide transparent liquid crystal display device. In FIG. 30, the display areas 10 of the first, second, and third transparent liquid

crystal display devices

1, 2, and 3 are seamlessly arranged.

FIG. 31 is a sectional view taken along line DD in FIG. 30. In FIG. 31, the first transparent liquid crystal display panel 6, the second transparent liquid crystal display panel 7, and the third transparent liquid crystal display panel 8 are arranged so as to partially overlap so that the display area 10 can be arranged seamlessly. A transparent liquid crystal display panel 6 and the like and a spacer OCA 71 are sandwiched between the first transparent protection plate 500 and the second transparent protection plate 600. A portion of the second transparent liquid crystal display panel 7 of the second transparent liquid crystal display device 2 fits into the recessed portion of the first transparent liquid crystal display device 1, and a portion of the third transparent liquid crystal display panel 8 of the third transparent liquid crystal display device 3 is fitted into the recess of the second transparent liquid crystal display device 2.

FIG. 32 is a cross-sectional view of the first transparent liquid crystal display device 1, the second transparent liquid crystal display device 2, and the third transparent liquid crystal display device 3, showing the state before the assembly shown in FIG. 31. In FIG. 32, the second transparent liquid crystal display panel 7 of the second transparent liquid crystal display device 2 protrudes, fits into the recess of the first transparent liquid crystal display device 1, and can overlap with a part of the first transparent liquid crystal display panel 6. It has become. Further, the third transparent liquid crystal display panel 8 of the third transparent liquid crystal display device 3 protrudes and is configured to fit into the recessed portion of the second transparent liquid crystal display device 2 and overlap with a part of the second transparent liquid crystal device 2. .

The same applies when four or more transparent liquid crystal display devices are arranged in parallel and the display areas 10 are seamlessly connected to form a large-screen transparent liquid crystal display device.

The composite transparent liquid crystal display device in which the display areas 10 are arranged seamlessly, as described in Example 3, can also be applied to a curved transparent liquid crystal display device. Rather than configuring a large-screen curved transparent liquid crystal display device by itself, it is better to configure a large-screen curved transparent liquid crystal display device by combining small curved transparent liquid crystal display devices, which puts less stress on each individual transparent liquid crystal display panel. The reliability of transparent liquid crystal display panels is improved.

FIG. 33 is a cross-sectional view showing a state in which a curved first transparent liquid crystal display panel 6 and a curved second transparent liquid crystal display panel 7 are bonded to each other with some overlaps so that the display area 10 becomes seamless. . The configuration is the same as that shown in FIGS. 25 and 26, except that the transparent liquid

crystal display panels

6 and 7 are curved.

The structure of the transparent liquid

crystal display panels

6 and 7 shown in FIG. 33 alone is mechanically unstable. FIG. 34 shows that the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are reinforced with a first transparent protective plate 500 and a second transparent protective plate 600, and the first transparent liquid crystal display panel 1 and the second transparent liquid crystal FIG. 2 is a cross-sectional view showing a state where these are combined as a display panel 2. FIG. The method of bending the first transparent liquid crystal display panel 6 in the first transparent liquid crystal display device 1 and the second transparent liquid crystal display panel 7 in the second transparent liquid crystal display device is as described in FIGS. 17 and 18.

In FIG. 34, a recess is formed at the end of the first transparent liquid crystal display device 1, and the protruding portion of the second transparent liquid crystal display panel 7 of the second transparent liquid crystal display device 2 is fitted into this recess, resulting in a curved display area. 10 can be arranged seamlessly.

FIG. 35 is a cross-sectional view of the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 before assembling the curved composite transparent liquid crystal display device. The protruding portion of the second transparent liquid crystal display device 2 fits into the recessed portion of the first transparent liquid crystal display device 1, and the display area 10 of the first transparent liquid crystal display panel 6 and the display area 10 of the second transparent liquid crystal display panel 7 are seamlessly connected. The configuration allows for flexible placement. The other configuration in FIG. 35 is the same as the configuration explained in FIG. 27 etc., except that each component is curved.

FIG. 36 is a cross-sectional view of a circular transparent liquid crystal display device having a seamless display area formed by four transparent liquid

crystal display devices

1, 2, 3, and 4. If a circular transparent liquid crystal display device is formed using one transparent liquid crystal display device, the stress on the transparent liquid crystal display panel becomes extremely large, reducing reliability. As shown in Figure 36, if the transparent liquid crystal display device is divided into four pieces and the four transparent liquid crystal display devices are assembled to form a circular transparent liquid crystal display device, the stress on each transparent liquid crystal display device can be greatly reduced. can be reduced.

In FIG. 36, for example, a recess is formed at one end of the first transparent liquid crystal display 1, and a protrusion of the second transparent liquid crystal display panel 7 at one end of the second transparent liquid crystal display 2 is formed. The display area 10 of the first transparent liquid crystal display panel 6 and the display area 10 of the second transparent liquid crystal display panel 7 are connected seamlessly. The relationship between the second transparent liquid crystal display device 2 and the third transparent liquid crystal display device 3, the relationship between the third transparent liquid crystal display device 3 and the fourth transparent liquid crystal display device 4, the fourth transparent liquid crystal display device 4 and the first transparent liquid crystal display device The relationship 1 is also the same.

In FIG. 36, the first transparent liquid crystal display panel 1 to the fourth transparent liquid crystal display panel 4 all have the same shape. That is, by creating one transparent liquid crystal display device, it is possible to configure a circular transparent liquid crystal display device. The assembly method is, for example, by arranging the first transparent liquid crystal display device 1 as shown in FIG. Bye. The fitting of the second transparent liquid crystal display device 2 and the third transparent liquid crystal display device 3 is also the same.

In a circular transparent liquid crystal display device as shown in FIG. 36, the greater the number of divisions, the smaller the stress generated on each transparent liquid crystal display device. Moreover, if one transparent liquid crystal display device is produced, by assembling it, a circular transparent liquid crystal display device having a seamless display area can be realized.

In Example 3, which is a configuration example in which a plurality of display areas are seamlessly arranged using a plurality of transparent liquid crystal display devices, the first transparent liquid crystal display panel 6 is oriented toward the front, that is, the counter substrate 200 is placed on the upper side. The second transparent liquid crystal display panel 7 is arranged so as to face the back side, that is, with the TFT substrate 100 facing upward. The frame area 20 of the first transparent liquid crystal display device 6 is overlapped with the display area 10 of the second transparent liquid crystal display device 2, and the frame area 20 of the second transparent liquid crystal display device 7 is overlapped with the display area 10 of the second transparent liquid crystal display device 2. By overlapping the display area 10 of the device 1, the display area is arranged seamlessly.

However, the method of seamlessly arranging the display areas 10 of the two transparent liquid

crystal display panels

6 and 7 is not limited to the configuration in which the two transparent liquid crystal display panels are arranged in opposite directions. That is, even if two transparent liquid crystal display panels face the same direction, for example, the opposing substrates 200 of the two transparent liquid crystal display panels both face upward, the configuration shown in FIG. 25 can be achieved. It is possible to do so.

FIG. 37 is a perspective view of transparent liquid

crystal display panels

6 and 7 showing this configuration. In FIG. 37, the driver IC is omitted from the diagram. In FIG. 37, the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are arranged so that the display area 10 is seamlessly arranged, for example, the frame area 20 of the first transparent liquid crystal display panel 6 and the second transparent liquid crystal The display areas 10 of the display panels 7 are arranged so as to overlap. In other words, even in the configuration of FIG. 37, the frame area 20 of the first transparent liquid crystal display panel 6 and the display area 10 of the second transparent liquid crystal display panel 2 overlap, and the frame area 20 of the second transparent liquid crystal display panel 7 overlaps with the frame area 20 of the second transparent liquid crystal display panel 2. It is possible to realize a configuration in which the display areas 10 of the first transparent liquid crystal display panel 6 overlap.

The configuration of Example 5, that is, the configuration of FIG. 37, can be applied to both the configuration of Example 3 and the configuration of Example 4.

The configuration of Examples 1 to 5 is such that the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 are first completed, and then the protruding portion of the second transparent liquid crystal display device 2 is replaced with the first transparent liquid crystal display device 2. The configuration that fits into the recess of the display device 1 has been described. However, such configurations can be difficult to fit. The present embodiment is configured to take measures against such a case.

38 to 40 show other manufacturing methods for realizing the configurations of the first and second embodiments. In this method, the first transparent liquid crystal display 1 and the second transparent liquid crystal display 2 are assembled together before the first transparent liquid crystal display 1 and the second transparent liquid crystal display 2 are completed.

The left side of FIG. 38 is a cross-sectional view of the first transparent liquid crystal display device 1 in which the first transparent liquid crystal display panel 6 is attached to the second transparent protection plate 600 via the OCA 70. The right end of the first transparent liquid crystal display panel 6 is set back inward (to the left) from the end of the second transparent protection plate 600. The right side of FIG. 38 is a cross-sectional view of the second transparent liquid crystal display device 7 in which the second transparent liquid crystal display panel 7 is attached to the second transparent protective plate 600 via the OCA 70. The left end of the second transparent liquid crystal display panel 7 projects further outward (to the left) than the end of the second transparent protection plate 600 .

The upper diagram in FIG. 39 is a cross-sectional view showing that the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2 are connected with the second transparent protection plate 600 abutting each other. In FIG. 39, the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 are connected in abutted state. The protruding portion of the second transparent liquid crystal display panel 6 is bonded to the second transparent protective plate 600 of the first transparent liquid crystal display device 1 via the OCA 70 in a plane. The lower diagram in FIG. 39 is a cross-sectional view showing a state in which the first transparent protection plate 500 is about to be adhered to the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 2 via the OCA 70. In addition, in this manufacturing method, the first transparent protection plate 500 does not necessarily need to be divided between the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2, and a continuous one may be used.

FIG. 40 is a cross-sectional view showing a transparent liquid crystal display device completed through the above process. FIG. 40 has the same configuration as FIG. 8 of the first embodiment. The above process can also be applied to the case where the transparent liquid crystal display device is composed of three or more transparent liquid crystal display devices, or to the case of a curved transparent liquid crystal display device as in the second embodiment.

41 to 43 show other manufacturing methods for realizing the configurations of the third and fourth embodiments. In this method, the first transparent liquid crystal display 1 and the second transparent liquid crystal display 2 are assembled together before the first transparent liquid crystal display 1 and the second transparent liquid crystal display 2 are completed.

The left side of FIG. 41 shows a first transparent liquid crystal display device 1 in which a first transparent liquid crystal display panel 6 is attached to a second transparent protection plate 600 via an OCA 70, and a spacer is further provided below the first transparent liquid crystal display panel 6. It is a sectional view of the state where OCA71 is pasted. The end of the spacer OCA71 is set back inward from the end of the first transparent liquid crystal display panel 6.

The right side of FIG. 41 is a cross-sectional view of the second transparent liquid crystal display device 7 in which the second transparent liquid crystal display panel 7 is attached to the second transparent protective plate 600 via spacers OCA71 and OCA70. The left end of the second transparent liquid crystal display panel 7 projects further outward than the end of the second transparent protection plate 600.

The upper diagram in FIG. 42 is a cross-sectional view showing a configuration in which the first transparent liquid crystal display device 6 and the second transparent liquid crystal display device 7 are arranged in a partially overlapping state via the OCA 70. This is to seamlessly juxtapose the display areas 10 of the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7, as described in the third embodiment. A step difference caused by arranging a portion of the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 in an overlapping manner is filled with a spacer OCA71. The lower view in FIG. 42 is a cross-sectional view showing a state in which the first transparent protection plate 500 is about to be adhered to the first transparent liquid crystal display panel 6 and the second transparent liquid crystal display panel 7 via the OCA 70. In addition, in this manufacturing method, the first transparent protection plate 500 does not necessarily need to be divided between the first transparent liquid crystal display device 1 and the second transparent liquid crystal display device 2, and a continuous one may be used.

FIG. 43 is a cross-sectional view showing a transparent liquid crystal display device completed through the above process. 43 has the same configuration as FIG. 27 of the third embodiment. The above process can also be applied to the case where the transparent liquid crystal display device is composed of three or more transparent liquid crystal display devices, or to the case of a curved transparent liquid crystal display device as in the fourth embodiment.

The above configuration has been described for a transparent liquid crystal display device. However, the assembly configurations described in Examples 1 to 6 are not limited to transparent liquid crystal display devices. Since an organic EL display device does not require a backlight, a transparent display device can be constructed, so that the present invention can also be applied to an organic EL display device.
Furthermore, the assembly structure of the present invention can also be applied to non-transparent liquid crystal display devices. It can also be applied to non-transparent organic EL display devices, micro LED display devices, etc. In the case of a non-transparent display device, one of the transparent protection plates, for example, the first transparent protection plate 500, may not be transparent.

1...First transparent liquid crystal display device, 2...Second transparent liquid crystal display device, 3...Third transparent liquid crystal display device, 4...Fourth transparent liquid crystal display device, 6...First transparent liquid crystal display panel, 7...Second transparent Liquid crystal display panel, 8... Third transparent liquid crystal display panel, 9... Fourth transparent liquid crystal display panel, 10... Display area, 11... Border of transparent liquid crystal display panel, 12... Border of transparent protection plate, 20... Frame area, 30 ...Terminal area, 40...Light source, 41...LED, 42...Lens, 50...Driver IC, 51...Video signal line driver IC, 52...Scanning line driver IC, 60...Transparent sealing material, 70...Adhesive material, OCA, 71 ...Spacer OCA, 100...TFT substrate, 200...Counter substrate, 300...Liquid crystal layer, 301...Liquid crystal molecules, 350...Reflector, 400...Light guide plate, 500...First transparent protection plate, 600...Second transparent protection plate, 5000...pedestal

Claims

A display device in which a first display device and a second display device are arranged in parallel,
The first display device has a structure in which a first transparent display panel is sandwiched between a first transparent protection plate and a second transparent protection plate, and an end of the first transparent display panel is connected to the first transparent protection plate. It is set back inward from the end of the second transparent protection plate,
The second display device has a configuration in which a second transparent display panel is sandwiched between a third transparent protection plate and a fourth transparent protection plate, and the second transparent display panel is sandwiched between the third transparent protection plate and the fourth transparent protection plate. It has a protrusion that protrudes outward from the end of the transparent protection plate,
A display device, wherein the protrusion of the second transparent display panel is sandwiched between the first transparent protection plate and the second transparent protection plate.
the first transparent display panel is adhered to the first transparent protection plate with a first adhesive, and is adhered to the second transparent protection plate with a second adhesive;
the second transparent display panel is adhered to the third transparent protection plate with a third adhesive, and is adhered to the fourth transparent protection plate with a fourth adhesive;
The protruding portion of the second transparent display panel is bonded to the first transparent protection plate with the third adhesive, and is bonded to the second transparent protection plate with the fourth adhesive. The display device according to claim 1.
The display device according to claim 1, wherein the first display device and the second display device are curved with respect to a protruding direction of the protruding portion of the second transparent display panel.
The display device according to claim 1, wherein the transparent display panel is a liquid crystal display panel.
The display device according to claim 1, wherein the transparent display panel is an organic EL display panel.
A liquid crystal display device in which a first liquid crystal display device and a second liquid crystal display device are arranged in parallel,
The first liquid crystal display device has a structure in which a first transparent liquid crystal display panel is sandwiched between a first transparent protection plate and a second transparent protection plate, and an end portion of the first transparent display panel is connected to the first transparent protection plate. It is set back inward from the end of the plate and the second transparent protection plate,
The second liquid crystal display device has a structure in which a second transparent liquid crystal display panel is sandwiched between a third transparent protective plate and a fourth transparent protective plate, and an end of the second transparent liquid crystal display panel is connected to the third transparent protective plate. It has a protrusion that protrudes outward from the ends of the protection plate and the fourth transparent protection plate,
A liquid crystal display device, wherein the protruding portion of the second transparent liquid crystal display panel is sandwiched between the first transparent protection plate and the second transparent protection plate.
the first transparent liquid crystal display panel is adhered to the first transparent protection plate with a first adhesive, and is adhered to the second transparent protection plate with a second adhesive;
the second transparent liquid crystal display panel is adhered to the third transparent protection plate with a third adhesive, and is adhered to the fourth transparent protection plate with a fourth adhesive;
The protruding portion of the second transparent liquid crystal display panel is bonded to the first transparent protection plate with the third adhesive, and is bonded to the second transparent protection plate with the fourth adhesive. The liquid crystal display device according to claim 6.
The first transparent liquid crystal display panel is in contact with the second transparent liquid crystal display panel through a fifth adhesive, and
The first to fourth adhesives are adhesive sheets,
7. The liquid crystal display device according to claim 6, wherein the fifth adhesive is an ultraviolet curable resin.
The first transparent protection plate of the first transparent liquid crystal display panel contacts the third transparent protection plate of the second transparent liquid crystal display panel in an abutting state via a sixth adhesive OCR,
The second transparent protection plate of the first transparent liquid crystal display panel is in abutting contact with the fourth transparent protection plate of the second transparent liquid crystal display panel via a seventh adhesive,
7. The liquid crystal display device according to claim 6, wherein the sixth and seventh adhesives are UV curable resins.
7. The liquid crystal display device according to claim 6, wherein the first liquid crystal display device and the second liquid crystal display device are curved with respect to a protruding direction of the protruding portion of the second transparent liquid crystal display panel. .
A display device in which a first display device and a second display device are arranged in parallel,
The first display device includes a first transparent display panel and a first adhesive sandwiched between a first transparent protection plate and a second transparent protection plate,
The second display device includes a second transparent display panel and a second adhesive sandwiched between a third transparent protection plate and a fourth transparent protection plate,
The end of the first adhesive material is set back inward from the end of the first display device,
The second transparent display panel has a protrusion that protrudes outward from the ends of the third transparent protection plate and the fourth transparent protection plate,
The protrusion is sandwiched between the first transparent protection plate and the second transparent protection plate, and overlaps with the first transparent display panel,
The first transparent display panel has a first display area and a first frame area,
The second transparent display panel has a second display area and a second frame area,
A display device, wherein the first frame area overlaps the second display area, and the second frame area overlaps the first display area.
An end of the first transparent protection plate is arranged to face an end of the third transparent protection plate,
12. The display device according to claim 11, wherein an end of the second transparent protection plate is disposed to face an end of the fourth transparent protection plate.
an end of the first display device is disposed opposite to an end of the second adhesive;
12. The display device according to claim 11, wherein an end portion of the second display device is disposed to face an end portion of the first adhesive material.
the first transparent display panel is adhered to the second transparent display panel with a third adhesive;
12. The display device according to claim 11, wherein the third adhesive is thinner than the first adhesive and the second adhesive.
The display device according to claim 11, wherein the first display device and the second display device are curved with respect to a protruding direction of the protruding portion of the second transparent display panel.
The display device according to claim 1, wherein the first transparent display panel and the second transparent display panel are transparent liquid crystal display panels.