Display device with protective glass

Abstract

The utility model relates to a display device with protective glass, which comprises a main display, a protective lens and a first polarized light layer, and the first polarized light layer is provided with a polarized light absorption shaft along a first axial direction; the main display is connected with a first driving circuit for displaying a first pattern; the protective lens comprises a first glass substrate, a second glass substrate, a liquid crystal layer, a first transparent electrode, a second transparent electrode, a first alignment layer and a second alignment layer; an overlapping region forming a second pattern exists between the first transparent electrode and the second transparent electrode; the liquid crystal layer is composed of negative liquid crystals doped with dichroic dye; the first alignment layer and the second alignment layer have a vertical alignment effect on liquid crystal molecules of the liquid crystal layer, so that the liquid crystal molecules and dye molecules are vertically arranged in a natural state, and meanwhile, friction along a second axial direction is applied to the first alignment layer and the second alignment layer; the second axial direction is orthogonal to the first axial direction, so that the liquid crystal molecules are inclined or horizontal along the second axial direction under the condition that an electric field is applied.

Description

Technical Field

[0001] The utility model relates to the field of display devices, and more specifically, to a display device with protective glass. Background Art

[0002] Currently on the market, the surface of LCD displays is generally a polarizer, which is not only easy to scratch but also has poor heat resistance. Therefore, many LCD displays used in outdoor occasions, such as watch displays, often need to add an extra piece of protective glass in front of the display to protect the polarizer.

[0003] However, the added protective glass has no other function except increasing the thickness and weight. Therefore, it is necessary to provide a display device with a protective glass to solve the above problems. Utility Model Content

[0004] The utility model provides a display device with a protective glass in order to overcome at least one defect (deficiency) of the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows: a display device with protective glass, including a main display and a protective lens, and also including

[0006] A first polarizing layer, wherein the first polarizing layer is disposed on the main display, and the first polarizing layer has a polarizing absorption axis along a first axial direction;

[0007] The main display is connected to a first driving circuit for displaying a first pattern;

[0008] The protective lens includes a first glass substrate, a second glass substrate, a liquid crystal layer, a first transparent electrode, a second transparent electrode, a first alignment layer and a second alignment layer;

[0009] There is an overlapping area between the first transparent electrode and the second transparent electrode forming a second pattern;

[0010] The liquid crystal layer is composed of negative liquid crystal doped with dichroic dyes;

[0011] The first alignment layer and the second alignment layer have a vertical alignment effect on the liquid crystal molecules in the liquid crystal layer, so that the liquid crystal molecules and the dye molecules are arranged vertically in a natural state, and at the same time, the first alignment layer and the second alignment layer are rubbed along a second axis, which is orthogonal to the first axis, so that the liquid crystal molecules are tilted or horizontal along the second axis when an electric field is applied;

[0012] The first glass substrate and the second glass substrate are respectively arranged on the outer sides of the first transparent electrode and the second transparent electrode;

[0013] The second driving circuit is connected to the first transparent electrode and the second transparent electrode. When the second driving circuit provides voltage to the first transparent electrode and the second transparent electrode, the liquid crystal layer in the overlapping area is tilted or horizontal along the second axis under the application of an electric field, and the dye molecules are driven to be tilted or horizontal along the second axis. The absorption axis of the dye molecules is orthogonal to the polarization absorption axis of the first polarizing layer, so that the light transmitted in the overlapping area is absorbed and darkened, thereby displaying a second pattern in the overlapping area. When the main display displays the first pattern, the second pattern is superimposed on the first pattern to form a double-layer image display. Since the protective glass can also display the second pattern, the second pattern can be used as an auxiliary display. For example, when this display device is used in a sports watch, the second pattern can be designed as a compass segment to assist in displaying the direction. Since the protective lens uses a dye, its surface is generally a glass material rather than a plastic polarizer, so it is not easy to scratch and has good heat resistance.

[0014] Furthermore, the main display is a normally white display, that is, the non-display area of ​​the first picture is in a bright state, so that the second picture can be displayed in the non-display area in the bright state.

[0015] Furthermore, the main display is a reflective display, so it does not need a backlight, and even if the main display is not working, it can still provide a background for the second picture.

[0016] Furthermore, the main display is a TN type display, which can generally provide a bright background with sufficiently high brightness.

[0017] Furthermore, the dichroic dye is a color dye, so that the second picture can display a color pattern, which is distinguished from the first picture of black and white pattern. In the present invention, the color dye can be red, blue, purple or green dye.

[0018] Furthermore, the protective lens is fully bonded to the front of the main display through a transparent adhesive layer, and the bonding of the transparent adhesive layer facilitates the protective lens to protect the main display.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0020] The display device with protective glass disclosed by the utility model can display a second pattern on the protective glass. The second pattern can be used as an auxiliary display. For example, when the display device is used in a sports watch, the second pattern can be designed as a compass segment to assist in displaying the direction. Since the protective lens adopts a dye, its surface is generally a glass material rather than a plastic polarizer, and therefore it is not easy to be scratched and has good heat resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of a display device with protective glass in the utility model.

[0022] Figure 2 It is an exploded view of the display device with protective glass in the utility model.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the display device of the utility model in which the liquid crystal molecules and the dye molecules remain vertical in a natural state.

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the display device of the utility model in which, when a voltage is applied, the liquid crystal molecules are tilted or horizontal, driving the dye molecules to be tilted or horizontal.

[0025] In the figure, 1 is the main display, 2 is the protective lens, 3 is the first polarizing layer, 4 is the polarizing absorption axis, 5 is the first pattern, 6 is the first driving circuit, 7 is the first glass substrate, 8 is the second glass substrate, 9 is the liquid crystal layer, 10 is the first transparent electrode, 11 is the second transparent electrode, 12 is the first alignment layer, 13 is the second alignment layer, 14 is the second pattern, 15 is the liquid crystal molecule, 16 is the second driving circuit, 17 is the dye molecule, 18 is the transparent glue layer, and 19 is the second axis. DETAILED DESCRIPTION

[0026] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be said to be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1As shown, a display device with protective glass comprises a main display 1 and a protective lens 2, and also comprises a first polarizing layer 3, wherein the first polarizing layer is arranged on the main display, and the first polarizing layer has a polarization absorption axis 4 along a first axial direction 19; a first driving circuit 6 for displaying a first pattern 5 is connected to the main display; the protective lens comprises a first glass substrate 7, a second glass substrate 8, a liquid crystal layer 9, a first transparent electrode 10, a second transparent electrode 11, a first alignment layer 12 and a second alignment layer 13; an overlapping region constituting a second pattern 14 exists between the first transparent electrode and the second transparent electrode; the liquid crystal layer is composed of negative liquid crystal doped with a dichroic dye; the first alignment layer and the second alignment layer have a vertical alignment effect on the liquid crystal molecules of the liquid crystal layer, so that the liquid crystal molecules and the dye molecules are arranged vertically in a natural state, and at the same time, the first alignment layer and the second alignment layer are applied with friction along a second axial direction 19, and the second axial direction is orthogonal to the first axial direction, so that the liquid crystal molecules 15 are tilted or horizontal along the second axial direction when an electric field is applied; the first glass substrate and the second glass substrate are respectively arranged on the outside of the first transparent electrode and the second transparent electrode;

[0029] The second driving circuit 16 is connected to the first transparent electrode and the second transparent electrode. When the second driving circuit provides voltage to the first transparent electrode and the second transparent electrode, the liquid crystal layer in the overlapping area is tilted or horizontal along the second axis when an electric field is applied, and the dye molecules are driven to be tilted or horizontal along the second axis. The absorption axis of the dye molecule 17 is orthogonal to the polarization absorption axis of the first polarizing layer, so that the light transmitted in the overlapping area is absorbed and darkened, thereby displaying a second pattern in the overlapping area. When the main display displays the first pattern, the second pattern is superimposed on the first pattern to form a double-layer image display. Since the protective glass can also display the second pattern, the second pattern can be used as an auxiliary display. For example, when this display device is used in a sports watch, the second pattern can be designed as a compass segment to assist in displaying the direction. Since the protective lens uses a dye, its surface is generally a glass material rather than a plastic polarizer, so it is not easy to scratch and has good heat resistance.

[0030] In the present invention, the main display is a normally white display, that is, the non-display area of ​​the first picture is in a bright state, so that the second picture can be displayed in the non-display area in the bright state. In addition, the main display can also be a reflective display, so it does not need a backlight. Even if the main display is not working, it can still provide a background for the second picture. In addition, the main display can also be a TN type display. TN type display can generally provide a bright background with sufficiently high brightness.

[0031] In the present invention, the dichroic dye is a color dye, so that the second screen can display a color pattern, which is distinguished from the first screen of the black and white pattern. In the present invention, the color dye can be a red, blue, purple or green dye, wherein the protective lens is fully bonded to the front of the main display through the transparent adhesive layer 18. The bonding of the transparent adhesive layer facilitates the protective lens to protect the main display.

[0032] In the figure, the description of the positional relationship is only for illustrative purposes and cannot be understood as a limitation of this patent; obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A display device with protective glass, comprising a main display and a protective lens, characterized in that: Also includes A first polarizing layer, wherein the first polarizing layer is disposed on the main display, and the first polarizing layer has a polarizing absorption axis along a first axial direction; The main display is connected to a first driving circuit for displaying a first pattern; The protective lens includes a first glass substrate, a second glass substrate, a liquid crystal layer, a first transparent electrode, a second transparent electrode, a first alignment layer and a second alignment layer; There is an overlapping area between the first transparent electrode and the second transparent electrode forming a second pattern; The liquid crystal layer is composed of negative liquid crystal doped with dichroic dyes; The first alignment layer and the second alignment layer have a vertical alignment effect on the liquid crystal molecules in the liquid crystal layer, so that the liquid crystal molecules and the dye molecules are arranged vertically in a natural state, and at the same time, the first alignment layer and the second alignment layer are rubbed along a second axis, which is orthogonal to the first axis, so that the liquid crystal molecules are tilted or horizontal along the second axis when an electric field is applied; The first glass substrate and the second glass substrate are respectively arranged on the outer sides of the first transparent electrode and the second transparent electrode; The second driving circuit is connected to the first transparent electrode and the second transparent electrode. When the second driving circuit provides voltage to the first transparent electrode and the second transparent electrode, the liquid crystal layer in the overlapping area is tilted or horizontal along the second axis when an electric field is applied, and the dye molecules are driven to tilt or horizontal along the second axis. The absorption axis of the dye molecules is orthogonal to the polarization absorption axis of the first polarizing layer, so that the light transmitted in the overlapping area is absorbed and darkened, thereby displaying a second pattern in the overlapping area. When the main display displays the first pattern, the second pattern is superimposed on the first pattern to form a double-layer image display.

2. The display device with protective glass according to claim 1, characterized in that: The main display is a normally white display.

3. The display device with protective glass according to claim 1, characterized in that: The main display is a reflective display.

4. The display device with protective glass according to claim 2, characterized in that: The main display is a TN type display.

5. The display device with protective glass according to claim 1, characterized in that: The dichroic dye is a colored dye.

6. The display device with protective glass according to claim 1, characterized in that: The protective lens is fully adhered to the front of the main display through a transparent adhesive layer.

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