TWM595774U - Viewing angle control structure and display device with viewing angle control structure - Google Patents

Abstract

This creation provides a viewing angle control structure and a display device with a viewing angle control structure, which includes: a first substrate, a first polarizer, a second substrate, a second polarizer, a first transparent conductive layer, a second transparent conductive layer, A liquid crystal layer, and the liquid crystal layer includes a plurality of liquid crystal molecules, the arrangement direction of the liquid crystal molecules is perpendicular or parallel to the first polarizer, and the liquid crystal molecules are all parallel to each other, wherein the first polarizer and the second polarizer The alignment directions are parallel to each other. When the first transparent conductive layer and the second transparent conductive layer have a potential difference, the liquid crystal molecules are driven to stretch in the vertical direction, so that they have the first viewing angle mode and the second viewing angle mode at the same time. Switching its viewing angle mode through a switch enables the display device to switch its viewing angle mode according to demand.

Description

Viewing angle control structure and display device with viewing angle control structure

This creation is about a viewing angle control structure, especially a display device with a viewing angle control structure.

Liquid crystal display, or LCD (Liquid Crystal Display), is a flat ultra-thin display device. It consists of a certain number of color or black and white pixels and is placed in front of the light source or reflective surface. Each pixel is composed of the following parts: a row of liquid crystal molecular layers, two sets of electrodes (indium tin oxide) arranged on both sides or the same side of the liquid crystal molecular layer, and two polarization directions on the outside of the upper and lower sides of the liquid crystal molecular layer With a vertical polarizing filter, liquid crystal molecules are extremely susceptible to induced electric charges due to the effect of an applied electric field.

With the development of technology in today's society, its LCD screens are widely used in various electronic devices, such as personal computers, and personal computers have their convenience for work, study, communication or entertainment, whether in the office or on the road. In public places and any environment, information can be queried, communicated, or created and stored through personal computers. Because of this convenience, many people often store important information on personal computers for easy use, but only in public places When using a personal computer, it is often peeped by others because of important information displayed on the screen, personal privacy or even business secrets. According to their needs, anti-peepers have been developed so that the display screen must be seen at a certain angle to clearly see the screen Information.

The traditional anti-peep protection sheet is based on the base material and the grating structure to control the light within a certain angle to achieve the effect of blocking vision. Generally, the viewing angle of the anti-peep sheet is about 30 to 60 degrees. If it exceeds this angle, the picture cannot be seen. , And the better the optical technology, the narrower the viewing angle can be. However, although the prior art anti-peep sheet can have the function of privacy protection, it can not choose a wide angle or a narrow angle according to people’s needs in real time. For others to discuss and watch, the anti-peep sheet must be removed manually, which also causes its inconvenience.

In view of the shortcomings of the use of conventional anti-peep films and the fact that their structural design is not ideal, how to develop a perspective control structure that is more in line with the convenience of manipulation, serve the public and promote the development of this industry, are related fields The subject of technical personnel to be overcome.

The main purpose of this creation is to provide a viewing angle control structure and a display device with a viewing angle control structure, which has a viewing angle mode of a first viewing angle and a second viewing angle, the viewing angle mode can be switched by a switch, so that the display device can be based on demand Switch its perspective mode.

In order to achieve the above purpose, an embodiment of the present invention discloses a viewing angle control structure, which includes: a first polarizer; a first substrate disposed on the first polarizer; a first transparent conductive layer, The first transparent conductive layer is disposed on the first substrate; a liquid crystal layer is disposed on the first transparent conductive layer, the liquid crystal layer includes a plurality of liquid crystal molecules, and the arrangement direction of the liquid crystal molecules Perpendicular or parallel to the first polarizer, and the liquid crystal molecules are parallel to each other; a second transparent conductive layer, the second transparent conductive layer is disposed on the liquid crystal layer; a second substrate is disposed on the first Two transparent conductive layers; and a second polarizer, the second polarizer is disposed on the second substrate; wherein the alignment directions of the first polarizer and the second polarizer are parallel to each other, the first When the transparent conductive layer and the second transparent conductive layer have a potential difference, the liquid crystal molecules are driven to stretch in the vertical direction.

This creation provides a viewing angle control structure of another embodiment, further comprising: a backlight source, the backlight source is disposed under the first polarizer to provide a light source.

This creation provides a viewing angle control structure of another embodiment, wherein a liquid crystal display panel is further provided on the second polarizer.

The present invention provides a viewing angle control structure of an embodiment, wherein the liquid crystal layer is disposed between the first substrate and the second substrate, and is sealed with a sealant.

This creation provides an embodiment of the viewing angle control structure, wherein the first polarizer and the second polarizer are made of a polyimide material.

This creation provides an embodiment of the viewing angle control structure, wherein the first transparent conductive layer and the second transparent conductive layer are composed of indium tin oxide material.

This creation provides a viewing angle control structure of an embodiment, wherein the viewing angle control structure can be switched to a first viewing angle and a second viewing angle, the viewing range of the first viewing angle is a viewing angle of +20 degrees to -20 degrees, the second The viewing angle is from +80 degrees to -80 degrees.

The present invention provides an embodiment that discloses a display device with a viewing angle control structure, which includes: a viewing angle control structure including: a first polarizer; a first substrate, the first substrate is disposed on the first polarized light On the sheet; a first transparent conductive layer, the first transparent conductive layer is disposed on the first substrate; a first liquid crystal layer, the first liquid crystal layer is disposed on the first transparent conductive layer, the first A liquid crystal layer includes a plurality of liquid crystal molecules, the arrangement direction of the liquid crystal molecules is perpendicular or parallel to the first polarizer, and the liquid crystal molecules are all parallel to each other; a second transparent conductive layer, the second transparent conductive layer Disposed on the liquid crystal layer; a second substrate, the second substrate is disposed on the second transparent conductive layer; a second polarizer, the second polarizer is disposed on the second substrate; an array Circuit, the array circuit is disposed on the second polarizer; a second liquid crystal layer, the second liquid crystal layer is disposed on the array circuit; a third substrate, the third substrate is disposed on the second liquid crystal layer Above; and a third polarizer, the third polarizer is disposed on the third substrate; wherein the alignment directions of the first polarizer and the second polarizer are parallel to each other, the second polarizer and the The alignment directions of the third polarizer are perpendicular to each other. When the first transparent conductive layer and the second transparent conductive layer have a potential difference, the liquid crystal molecules are driven to stretch in the vertical direction.

The present invention provides a display device with a viewing angle control structure according to another embodiment, further comprising: a black matrix disposed between the second liquid crystal layer and the third substrate or the array circuit and the second liquid crystal layer Between; and a backlight, the backlight is disposed under the first polarizer to provide a light source.

The present invention provides a display device with a viewing angle control structure according to another embodiment, wherein the black matrix further includes: a color filter, the black matrix is disposed on the color filter.

The present invention provides a display device with a viewing angle control structure according to another embodiment, and further includes: a fourth substrate disposed between the second polarizer and the array circuit.

This creation provides an embodiment of a display device with a viewing angle control structure, wherein the first polarizer, the second polarizer, and the third polarizer are made of a polyimide material.

This creation provides an embodiment of the display device with a viewing angle control structure, wherein the first transparent conductive layer and the second transparent conductive layer are composed of indium tin oxide material.

In order to make your reviewer have a better understanding and understanding of the characteristics of the creation and the effects achieved, I would like to use examples and diagrams to cooperate with the description, and the description is as follows:

In the following, the present creation will be described in detail by illustrating various embodiments of the present creation by the drawings. However, the concept of this creation may be embodied in many different forms, and should not be interpreted as being limited to the exemplary embodiments set forth herein.

This creation is a viewing angle control structure. The viewing angle control structure drives the liquid crystal molecules to stretch vertically through the potential difference of the transparent conductive layer, and converts its display viewing angle from the second viewing angle to the first viewing angle.

First, please refer to FIG. 1, which is a schematic diagram of a viewing angle control structure according to an embodiment of the creation, as shown in the figure; its viewing angle control structure 1 includes a first polarizer 11, a first transparent conductive layer 12, a liquid crystal layer 13, and a Two transparent conductive layers 14, a second polarizer 15, a first substrate 16, and a second substrate 17, wherein the first polarizer 11 and the second polarizer 15 may be made of polyimide material; the first transparent conductive layer 12 The second transparent conductive layer 14 may be composed of indium tin oxide material, but not limited to this, and the liquid crystal layer 13 further includes a plurality of liquid crystal molecules 131. In addition, the viewing angle control structure 1 of the present invention may further include a backlight Source 2; and the second substrate 17 is further provided with a liquid crystal display panel 3.

After the first transparent conductive layer 12 and the second transparent conductive layer 14 are disposed between the first substrate 16 and the second substrate 17, the liquid crystal layer 13 is placed on the first transparent conductive layer 12 and the second transparent conductive layer 14 And sealed with sealant A, which means that the first transparent conductive layer 12 is disposed on the first substrate 16 in sequence, the liquid crystal layer 13 is disposed on the first transparent conductive layer 12, and the second transparent conductive layer 14 Is disposed on the liquid crystal layer 13, the second substrate 17 is disposed on the second transparent conductive layer 14, the first substrate 16 is disposed on the first polarizer 11, and the second substrate 17 is disposed on the second polarizer 15 under.

In addition, a backlight 2 is further provided under the first polarizer 11, and a liquid crystal display panel is provided on the second polarizer 15, wherein the alignment directions of the first polarizer 11 and the second polarizer 15 are mutually Parallel, so configured as the second viewing angle mode, and the arrangement direction of the liquid crystal molecules 131 of the liquid crystal layer 13 is perpendicular or parallel to the first polarizer 11, and the liquid crystal molecules 131 are parallel to each other, the first transparent conductive The layer 12 and the second transparent conductive layer 14 have a potential difference, which drives the liquid crystal molecules 131 to stretch in the vertical direction.

Please refer to FIGS. 2-3, which is a schematic diagram of the operation of the viewing angle control structure of another embodiment of the creation, wherein FIG. 2 is the light provided by the backlight source 2 passing through the first polarized light when the viewing angle control structure is not driven After the plate 11 is polarized, its light passes through the liquid crystal molecules 131, and the liquid crystal molecules 131 passing therethrough cannot provide optical path difference when it is not driven. Therefore, when there is no optical path difference, the first The polarization of the polarizer 11 and the second polarizer 15 are consistent, so that the light can penetrate directly, so it is the second viewing angle mode, wherein the optical path difference is the difference between the optical paths of the two rays, the optical path (Optical path length) refers to the product of the geometric path length s of the optical path and the refractive index n of the light in the medium in a uniform medium, which is expressed by Δ, that is: Δ=ns. The importance of its optical path lies in determining the phase of light, which determines the interference and diffraction behavior of light.

FIG. 3 shows the same light traveling route when the viewing angle control structure is driven. When the light is polarized by the first polarizer 11, the light passes through the liquid crystal molecules 131, although the direction passes When the liquid crystal molecules 131 are driven, the liquid crystal molecules 131 are stretched, which means that the liquid crystal molecules 131 are stretched in the vertical direction, but the optical path difference cannot be provided under a positive viewing angle, which makes the first polarized light The polarization of the film 11 and the second polarizer 15 are the same, but when the left and right viewing angles are viewed sideways, the liquid crystal molecules 131 are stretched, which causes an optical path difference, which causes the polarized light to change from up and down polarization to left and right polarization. Light, so that the polarized light in the left and right viewing angle side view cannot penetrate the second polarizer 15, and is the first viewing angle mode, wherein in this embodiment, the viewing angle control structure can be switched to the first viewing angle and the second viewing angle, the first The viewing angle is from +20 degrees to -20 degrees, and the second viewing angle is from +80 degrees to -80 degrees.

Please refer to FIGS. 4A-4B, which are schematic diagrams of a display device with a viewing angle control structure according to an embodiment of the creation, as shown in the figure; its display device with a viewing angle control structure 4 includes a viewing angle control structure 1, which includes a A substrate 41, a first polarizer 42, a first transparent conductive layer 43, a first liquid crystal layer 44, a second transparent conductive layer 45 and a second polarizer 46, a second substrate 47, an array circuit 48, a second liquid crystal layer 49 , The third polarizer 51 and the third substrate 52, wherein the first liquid crystal layer 44 further includes a plurality of liquid crystal molecules 441, and the first polarizer 42, the second polarizer 46 and the third polarizer 51 may be polyimide Composed of materials; the first transparent conductive layer 43 and the second transparent conductive layer 45 can be composed of indium tin oxide materials, but not limited to this, in addition, the display device 4 with a viewing angle control structure of the present invention can be further The black matrix 50, the fourth substrate 53 and the backlight 6 are included. The black matrix 50 further includes a color filter 501.

The viewing angle control structure 1 of the present invention is mainly that the first substrate 41 is disposed on the first polarizer 42; the first transparent conductive layer 43 is disposed on the first substrate 41, and the first liquid crystal layer 44 is disposed on the first On the transparent conductive layer 43, the second transparent conductive layer 45 is disposed on the first liquid crystal layer 44, the second substrate 47 is disposed on the second transparent conductive layer 45, and the second polarizer 46 is disposed on the second substrate 47 The array circuit 48 is disposed on the second polarizer 46, the second liquid crystal layer 49 is disposed on the array circuit 48, the third substrate 52 is disposed on the second liquid crystal layer 49, and the third polarizer 51 is disposed on the first On the three substrates 52, the display device with a viewing angle control structure further includes a black matrix 50 disposed between the second liquid crystal layer 49 and the third substrate 52 or between the array circuit 48 and the second liquid crystal layer 49, and the black The matrix 50 is disposed above the color filter 501, and the backlight 6 is disposed under the first polarizer 42, and the fourth substrate 53 is disposed between the second polarizer 46 and the array circuit 48, wherein the first polarized light The alignment directions of the plate 42 and the second polarizer 46 are parallel to each other, the alignment directions of the second polarizer 46 and the third polarizer 51 are perpendicular to each other, and the arrangement direction of the liquid crystal molecules 441 of the first liquid crystal layer 44 Vertical or parallel to the first polarizer 42, and the liquid crystal molecules 441 are parallel to each other, the first transparent conductive layer 43 and the second transparent conductive layer 45 have a potential difference, and drive the liquid crystal molecules 441 to stretch in the vertical direction .

Please refer to FIG. 5, which is a schematic diagram of a display device with a viewing angle control structure according to another embodiment of the creation. The difference between this embodiment and another embodiment of the display device with a viewing angle control structure is the second in this embodiment. The polarizer 46 has a structure that carries the array circuit 48. The structure may be a metal grid structure, that is, the array circuit 48 is disposed adjacent to the second polarizer 46, so the fourth substrate 53 is not required. The embodiment only uses a three-layer substrate to further reduce its volume, and its driving method is the same as that of the remaining embodiments, which is not repeated here.

To sum up, this creation is a viewing angle control structure, which is based on the alignment of the first polarizer and the second polarizer parallel to each other, and the first transparent conductive layer and the second transparent conductive layer have a potential difference, which drives a plurality of The liquid crystal molecules are stretched in the vertical direction, and the viewing angle mode should be changed. Therefore, the viewing angle mode can have both the first viewing angle and the second viewing angle, and the viewing angle mode can be changed according to their needs. This creation also provides a display with a viewing angle control structure Compared with the conventional viewing angle control structure, the device further reduces the polarizer or/and the substrate and reduces the volume of the display device.

Therefore, this creation is truly novel, progressive and available for industrial use. It should meet the patent application requirements of my country's Patent Law. Undoubtedly, I file a new type of patent application in accordance with the law and pray that the Office will grant the patent as soon as possible.

However, the above are only the preferred embodiments of this creation, and are not used to limit the scope of the implementation of this creation. Any changes and modifications based on the shape, structure, characteristics and spirit described in the scope of the patent application for this creation , Should be included in the scope of patent applications for this creation.

1: Perspective control structure 11: The first polarizer 12: The first transparent conductive layer 13: Liquid crystal layer 131: Liquid crystal molecules 14: Second transparent conductive layer 15: Second polarizer 16: the first substrate 17: Second substrate 2: backlight 3: LCD panel 4: Display device with viewing angle control structure 41: The first substrate 42: First polarizer 43: The first transparent conductive layer 44: the first liquid crystal layer 441: Liquid crystal molecules 45: second transparent conductive layer 46: Second polarizer 47: Second substrate 48: Array circuit 49: Second liquid crystal layer 50: black matrix 501: color filter 51: Third polarizer 52: Third substrate 53: Fourth substrate 6: backlight A: Frame glue

Figure 1: It is a schematic diagram of a perspective control structure according to an embodiment of this creation; Figure 2: It is a schematic diagram of the operation of the perspective control structure according to an embodiment of this creation; Figure 3: It is a schematic diagram of the operation of the perspective control structure according to an embodiment of this creation; Figure 4A: It is a schematic diagram of a display device with a viewing angle control structure according to an embodiment of this creation; Figure 4B: It is a schematic diagram of a display device with a viewing angle control structure according to an embodiment of this creation; and Figure 5: It is a schematic diagram of a display device with a viewing angle control structure according to another embodiment of the present creation.

1: Perspective control structure

11: The first polarizer

12: The first transparent conductive layer

13: Liquid crystal layer

131: Liquid crystal molecules

14: Second transparent conductive layer

15: Second polarizer

16: the first substrate

17: Second substrate

2: backlight

3: LCD panel

Claims (13)

A perspective control structure, including: A first polarizer; A first substrate disposed on the first polarizer; A first transparent conductive layer, the first transparent conductive layer is disposed on the first substrate; A liquid crystal layer disposed on the first transparent conductive layer, the liquid crystal layer includes a plurality of liquid crystal molecules, the arrangement direction of the liquid crystal molecules is perpendicular or parallel to the first polarizer, and the liquid crystals The molecules are parallel to each other; A second transparent conductive layer, the second transparent conductive layer is disposed on the liquid crystal layer; A second substrate disposed on the second transparent conductive layer; and A second polarizer, the second polarizer is disposed on the second substrate; The alignment directions of the first polarizer and the second polarizer are parallel to each other. When the first transparent conductive layer and the second transparent conductive layer have a potential difference, the liquid crystal molecules are driven to stretch in the vertical direction. The perspective control structure as described in item 1 of the patent application scope further includes: A backlight source, which is disposed under the first polarizer to provide a light source. The viewing angle control structure as described in item 2 of the patent application scope, wherein a liquid crystal display panel is further provided on the second polarizer. The viewing angle control structure as described in item 1 of the patent application scope, wherein the liquid crystal layer is disposed between the first substrate and the second substrate, and is sealed with a sealant. The viewing angle control structure as described in item 1 of the patent application scope, wherein the first polarizer and the second polarizer are composed of a polyimide material. The viewing angle control structure as described in item 1 of the patent application scope, wherein the first transparent conductive layer and the second transparent conductive layer are composed of indium tin oxide material. The viewing angle control structure as described in item 1 of the patent application scope, wherein the viewing angle control structure can be switched to a first viewing angle and a second viewing angle, and the visible range of the first viewing angle is from +20 degrees to -20 degrees, The visible range of the second viewing angle is from +80 degrees to -80 degrees. A display device with a viewing angle control structure includes: A perspective control structure, which includes: A first polarizer; A first substrate, the first substrate is disposed on the first polarizer; A first transparent conductive layer, the first transparent conductive layer is disposed on the first substrate; A first liquid crystal layer, the first liquid crystal layer is disposed on the first transparent conductive layer, the first liquid crystal layer includes a plurality of liquid crystal molecules, the arrangement direction of the liquid crystal molecules is perpendicular or parallel to the first polarizer , And the liquid crystal molecules are parallel to each other; A second transparent conductive layer, the second transparent conductive layer is disposed on the liquid crystal layer; A second substrate disposed on the second transparent conductive layer; A second polarizer, the second polarizer is disposed on the second substrate; An array circuit arranged on the second polarizer; A second liquid crystal layer, the second liquid crystal layer is disposed on the array circuit; A third substrate disposed on the second liquid crystal layer; and A third polarizer, the third polarizer is disposed on the third substrate; The alignment directions of the first polarizer and the second polarizer are parallel to each other, the alignment directions of the second polarizer and the third polarizer are perpendicular to each other, the first transparent conductive layer and the second transparent conductive layer When there is a potential difference, the liquid crystal molecules are driven to stretch in the vertical direction. The display device with a viewing angle control structure as described in item 8 of the patent application scope further includes: A black matrix disposed between the second liquid crystal layer and the third substrate or between the array circuit and the second liquid crystal layer; and A backlight source, which is disposed under the first polarizer to provide a light source. The display device with a viewing angle control structure as described in item 9 of the patent application scope, wherein the black matrix further includes a color filter, and the black matrix is disposed on the color filter. The display device with a viewing angle control structure as described in item 8 of the patent application scope further includes: A fourth substrate. The fourth substrate is disposed between the second polarizer and the array circuit. The display device with a viewing angle control structure as described in item 8 of the patent application range, wherein the first polarizer, the second polarizer and the third polarizer are made of a polyimide material. The display device with a viewing angle control structure as described in item 8 of the patent application range, wherein the first transparent conductive layer and the second transparent conductive layer are composed of indium tin oxide material.

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