CN105954901A - Display device, production method and display method - Google Patents

Abstract

The present invention provides a display device, a manufacturing method and a display method. The display device includes: a display panel and a grating structure arranged on the light-emitting side of the display panel. The grating structure includes alternately arranged light-transmitting regions and light-shielding/transmitting The light-switchable area, the light-shielding/light-transmitting switchable area is provided with an electrowetting device; a control module, used to control the electrowetting device on a predetermined display area of the display panel to be in a light-transmitting state or a light-shielding state , so that the predetermined display area is in a normal display mode or an anti-peep display mode, wherein the viewing angle of the predetermined display area in the anti-peep display mode is smaller than that in the normal display mode. The display device of the present invention can conveniently switch between the peep-proof display mode and the normal display mode.

Description

A display device, manufacturing method and display method

technical field

The present invention relates to the field of display technology, in particular to a display device, a manufacturing method and a display method.

Background technique

With the development of society and the abundance of material conditions, the combination of various electronic devices such as mobile phones, computers, and televisions with people's life and work has become closer and closer. However, while electronic devices provide people with many conveniences, they may also cause the leakage of personal information. For example, displays in the prior art generally have a relatively large viewing angle, which is a great advantage for public display, but it is unfavorable for the security and confidentiality of personal information. In order to protect the user's information privacy, many peep-proof display products have been launched on the market, most of which achieve the peep-proof effect by attaching a peep-proof grating film on the surface of the display. First, when the user needs to use the anti-peeping display mode, it is necessary to attach an anti-peeping film on the screen to achieve the anti-peeping effect. After use, it needs to be removed to return to the normal display mode. To a lot of inconvenience.

Contents of the invention

In view of this, the present invention provides a display device, a manufacturing method and a display method, which can conveniently switch between a peep-proof display mode and a normal display mode.

In order to solve the above technical problems, the present invention provides a display device, comprising:

A display panel and a grating structure disposed on the light-emitting side of the display panel, the grating structure includes alternately arranged light-transmitting regions and light-shielding/light-transmitting switchable regions, and the light-shielding/light-transmitting switchable regions are provided with electrowetting device;

A control module, configured to control the electrowetting device on a predetermined display area of the display panel to be in a light-transmitting state or a light-shielding state, so that the predetermined display area is in a normal display mode or an anti-peeping display mode, wherein the The viewing angle of the predetermined display area in the anti-peeping display mode is smaller than the viewing angle in the normal display mode.

Preferably, the predetermined display area is smaller than or equal to the entire effective display area of the display panel.

Preferably, the electrowetting device includes a first transparent electrode and a second transparent electrode disposed opposite to each other, a hydrophobic dielectric layer disposed on the first transparent electrode, and a barrier wall disposed on the hydrophobic dielectric layer , and a transparent polar solution and an opaque non-polar solution disposed between the first transparent electrode and the second transparent electrode.

Preferably, the control device includes a power supply unit;

Wherein, the first transparent electrode of the electrowetting device in each light-shielding/light-transmitting switchable region is connected to a power supply unit; or

The first transparent electrodes of the electrowetting devices in N adjacent N light-shielding/light-transmitting switchable regions are connected to one power supply unit, where N is greater than 1 and less than or equal to the total number of the light-shielding/light-transmitting switchable regions.

Preferably, the display panel is provided with a black matrix, and when the electrowetting device is in a light-transmitting state, the opaque non-polar solution stays in the corresponding position of the black matrix.

Preferably, through the arrangement of the first transparent electrode and the second transparent electrode, when the electrowetting device is in a light-transmitting state, the opaque non-polar solution stays in the corresponding position of the black matrix.

Preferably, the display panel is an LCD display panel or an OLED display panel.

The present invention also provides a method for manufacturing a display device, which is used for manufacturing the above-mentioned display device.

The present invention also provides a display method, which is applied to the above display device, and the display method includes:

When the predetermined display area of the display device needs to be in the normal display mode, the electrowetting device controlling the predetermined display area is in a light-transmitting state;

When the predetermined display area needs to be in the anti-peep display mode, the electrowetting device controlling the predetermined display area is in a light-shielding state;

Wherein, the viewing angle of the predetermined display area in the anti-peeping display mode is smaller than that in the normal display mode.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

Description of drawings

FIG. 1 is a schematic structural diagram of a predetermined display area of a display device in a normal display mode according to Embodiment 1 of the present invention;

FIG. 2 is a structural schematic diagram of a predetermined display area of a display device in Embodiment 1 of the present invention in an anti-peeping display mode;

3 is a schematic structural diagram of an electrowetting device in a light-shielding state according to an embodiment of the present invention;

4 is a schematic structural diagram of an electrowetting device in a light-transmitting state according to an embodiment of the present invention;

5 is a schematic structural diagram of a display device according to Embodiment 2 of the present invention;

6 is a schematic structural diagram of a display device according to Embodiment 3 of the present invention;

FIG. 7 is a schematic structural diagram of a display device according to Embodiment 4 of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

Please refer to FIG. 1 and FIG. 2. Embodiment 1 of the present invention provides a display device, which includes:

The display panel 100 and the grating structure 200 disposed on the light-emitting side of the display panel 100, the grating structure 200 includes alternately arranged light-transmitting regions 201 and light-shielding/light-transmitting switchable regions 202, and the light-shielding/light-transmitting switchable region 202 is provided with an electrowetting device 203; and

A control module 300, configured to control the electrowetting device 203 on a predetermined display area of the display panel 100 to be in a light-transmitting state or a light-shielding state, so that the predetermined display area is in a normal display mode or an anti-peeping display mode, Wherein, the viewing angle of the predetermined display area in the anti-peeping display mode is smaller than that in the normal display mode.

In the embodiment of the present invention, please refer to FIG. 1. When the user needs to keep the information and data displayed in the preset display area of the display device confidential, he can switch to the anti-peeping display mode. At this time, the electrowetting device in the preset display area 203 is in the light-shielding state, and the electrowetting device 203 blocks the light rebroadcasted in the left and right directions, and only allows the light within a narrower viewing angle to reach the human eye, which has a relatively small display viewing angle, thereby providing the display image for the front-viewing user. At the same time, it prevents people from the side view from peeping, effectively protecting personal privacy and business secrets. Please refer to FIG. 2, when the user needs to share the display image of the display device with other viewers, the user can switch to the normal display mode. At this time, when the electrowetting device 203 in the preset display area is in the light-transmitting state, the user can display in multiple The viewing angle is to observe the display image of the preset display area.

That is to say, the preset display region can be controlled to switch between the normal display mode and the anti-peeping display mode by controlling the electrowetting device 203 of the preset display region to switch between the light-transmitting state and the light-shielding state. Compared with the traditional anti-peeping display technology, the present invention has the advantages of simple structure, fast response speed, and no influence on the display effect.

In the embodiment of the present invention, the preset display mode can be the entire effective display area of the display panel, that is, the entire effective display area of the display panel can be controlled to switch from the normal display mode to the anti-peep display mode, or from the anti-peep display The mode switches to normal display mode. The preset display mode can also be a partial display area of the display panel, that is, the partial display area of the display panel can be controlled to switch from the normal display mode to the peep-proof display mode, or from the peep-proof display mode to the normal display mode.

The structure of the electrowetting device will be described below.

Please refer to FIG. 3 and FIG. 4 , the electrowetting device according to the embodiment of the present invention includes: a first transparent electrode 2031 and a second transparent electrode 2032 arranged oppositely, and a hydrophobic dielectric layer 2033 arranged on the first transparent electrode 2031 , a barrier wall 2034 disposed on the hydrophobic dielectric layer 2033 , and a transparent polar solution 2035 and an opaque non-polar solution 2036 disposed between the first transparent electrode 2031 and the second transparent electrode 2032 .

Please refer to FIG. 3, when no voltage is applied to the first transparent electrode 2031 and the second transparent electrode 2032, the affinity of the opaque non-polar solution 2036 to the hydrophobic dielectric layer 2033 is greater than that of the transparent polar solution 2035, making the opaque non-polar solution The polar solution 2036 spreads on the surface of the hydrophobic dielectric layer 2033 .

Please refer to FIG. 4, when a voltage is applied to the first transparent electrode 2031 and the second transparent electrode 2032, the charge distribution generated on the hydrophobic dielectric layer 2033 will increase its affinity for the transparent polar solution 2035 to drive opaque non-polar The solution 2036 is squeezed to a predetermined location, such as a location near a retaining wall.

As mentioned above, the entire effective display area of the display panel can be controlled to switch between the normal display mode and the anti-peeping display mode. It is also possible to control a part of the display area of the display panel to switch between the normal display mode and the anti-peeping display mode.

When it is only necessary to control the entire effective display area of the display panel to switch between the normal display mode and the anti-peeping display mode, the control device can provide the pixel electrodes of all electrowetting devices on the entire effective display area of the display panel (that is, the above-mentioned A transparent electrode 2031) provides the same voltage signal. In this case, the control device may only include one power supply unit for providing the same voltage signal to the pixel electrodes of all electrowetting devices.

When it is necessary to control a part of the display area of the display panel to switch between the normal display mode and the anti-peeping display mode, the control device needs to separately provide voltage signals to the pixel electrodes of the electrowetting device on the part of the display area. That is to say, the control device needs to include at least two power supply units, so as to separately provide voltage signals for the pixel electrodes of the electrowetting device on a part of the display area.

In order to achieve the purpose of controlling the switching of part of the display area of the display panel between the normal display mode switching and the anti-peeping display mode, in an embodiment of the present invention, preferably, the electric The first transparent electrode of the wetting device is connected to one of the power supply units, that is to say, the electrowetting device in each light-shielding/light-transmitting switchable region can be individually controlled.

In another preferred embodiment of the present invention, the first transparent electrodes of the electrowetting devices in the adjacent N light-shielding/light-transmitting switchable regions may also be connected to one of the power supply units, where N is greater than 1 and less than the The total number of shading/transmitting switchable areas mentioned above. That is to say, the electrowetting devices in the adjacent N light-shielding/light-transmitting switchable regions can be controlled together, and further preferably, the first transparent electrode of the electrowetting device in the above-mentioned predetermined display region is connected to a power supply Units are connected.

In the embodiment of the present invention, preferably, the aperture ratio of the display device can be increased by controlling the stop position of the opaque non-polar solution 2036 . Please refer to FIG. 5 , when the electrowetting device 203 is in a light-transmitting state, in order to increase the aperture ratio of the display device, the opaque non-polar solution 2036 can be controlled to stay at the corresponding position of the black matrix 101 of the display device.

Specifically, through the setting of the first transparent electrode 2031 and the second transparent electrode 2032, when the electrowetting device is in a light-transmitting state, the opaque non-polar solution can be kept at the corresponding position of the black matrix .

For example, as shown in FIG. 5 , the first transparent electrode 2031 is divided into two strip electrodes, and the opaque non-polar solution 2036 stays in the central region of the electrowetting device 203 .

The display panel in the above embodiments may be an LCD display panel, may also be an OLED display panel, or other types of display panels.

In the above embodiments, the size of the electrowetting device can be set according to needs, for example, one electrowetting device can correspond to one pixel area of the display panel, one electrowetting device can correspond to multiple pixel areas, etc., or multiple The electrowetting device may correspond to a pixel area or the like.

Please refer to FIG. 6. FIG. 6 is a display device according to Embodiment 3 of the present invention. The display device is an LCD display device, and the display device includes:

The LCD display panel 100A. The LCD display panel 100A generally includes an upper substrate, a lower substrate, and a liquid crystal layer between the upper substrate and the lower substrate.

An upper polarizer 400 disposed on the light emitting side of the LCD display panel 100A;

The grating structure 200 disposed on the upper polarizer 400, the grating structure 200 includes alternately arranged light-transmitting regions 201 and light-shielding/light-transmitting switchable regions 202, and the light-shielding/light-transmitting switchable regions 202 are provided with electrowetting device 203;

a lower polarizer 500 disposed on the light-incident side of the LCD display panel 100A;

A backlight module 600 disposed on the other side of the lower polarizer 500;

A control module (not shown in the figure), configured to control the electrowetting device 203 on a predetermined display area of the LCD display panel 100A to be in a light-transmitting state or a light-shielding state, so that the predetermined display area is in a normal display mode or Anti-peeping display mode, wherein the viewing angle of the predetermined display area in the anti-peeping display mode is smaller than that in the normal display mode.

Please refer to FIG. 7. FIG. 7 is a display device according to Embodiment 3 of the present invention. The display device is an OLED display device, and the display device includes:

OLED display panel 100B;

The grating structure 200 disposed on the OLED display panel 100B, the grating structure 200 includes alternately arranged light-transmitting regions 201 and light-shielding/light-transmitting switchable regions 202, and the light-shielding/light-transmitting switchable regions 202 are provided with electrowetting device 203;

A control module (not shown in the figure), configured to control the electrowetting device 203 on a predetermined display area of the LCD display panel 100A to be in a light-transmitting state or a light-shielding state, so that the predetermined display area is in a normal display mode or Anti-peeping display mode, wherein the viewing angle of the predetermined display area in the anti-peeping display mode is smaller than that in the normal display mode.

An embodiment of the present invention also provides a method for manufacturing a display device, which is used for manufacturing the display device in any of the above embodiments.

An embodiment of the present invention also provides a display method, which is applied to the display device in any of the above embodiments. The display method includes:

Step 1: When the predetermined display area of the display device needs to be in the normal display mode, controlling the electrowetting device in the predetermined display area to be in a light-transmitting state;

Step 2: When the predetermined display area needs to be in the anti-peeping display mode, control the electrowetting device of the predetermined display area to be in a light-shielding state;

Wherein, the viewing angle of the predetermined display area in the anti-peeping display mode is smaller than that in the normal display mode.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (9)

1. a display device, it is characterised in that including:

Display floater and be arranged at the optical grating construction of light emission side of described display floater, described optical grating construction bag Including the transmission region being arranged alternately and shading/printing opacity switchable regions, described shading/printing opacity switchable regions sets It is equipped with Electrowetting device；

Control module, for controlling at the described Electrowetting device in the predetermined display area of described display floater In light transmission state or shading status, so that described predetermined display area is in normal displaying mode or peep-proof shows Show pattern, wherein, described predetermined display area visual angle under described peep-proof display pattern less than described just The often visual angle under display pattern.

Display device the most according to claim 1, it is characterised in that described predetermined display area is little In or equal to the territory, whole effective display area of described display floater.

Display device the most according to claim 2, it is characterised in that described Electrowetting device includes The first transparency electrode being oppositely arranged and the second transparency electrode, be arranged in described first transparency electrode is hydrophobic Dielectric layer, is arranged at the barricade on described hydrophobic dielectric layer, and is arranged at the first transparency electrode and second saturating Transparent polar solution between prescribed electrode and opaque non-polar solution.

Display device the most according to claim 3, it is characterised in that

Described control device includes power supply unit；

Wherein, the first transparency electrode of the Electrowetting device in each shading/printing opacity switchable regions and an institute State power supply unit to be connected；Or

First transparency electrode of the adjacent Electrowetting device in N number of shading/printing opacity switchable regions and an institute Stating power supply unit to be connected, N is less than or equal to the sum of described shading/printing opacity switchable regions more than 1.

Display device the most according to claim 3, it is characterised in that arrange on described display floater Having black matrix, when described Electrowetting device is in light transmission state, described opaque non-polar solution rests on institute State black matrix correspondence position.

Display device the most according to claim 5, it is characterised in that by described first transparent electrical Pole and the setting of the second transparency electrode, when described Electrowetting device is in light transmission state, by described opaque Non-polar solution rests on described black matrix correspondence position.

Display device the most according to claim 1, it is characterised in that described display floater is LCD Display floater or OLED display panel.

8. the manufacture method of a display device, it is characterised in that as arbitrary in claim 1-7 for making Display device described in Xiang.

9. a display packing, it is characterised in that be applied to showing as according to any one of claim 1-7 Showing device, described display packing includes:

When under the predetermined display area of described display device needs at normal displaying mode, control described predetermined The Electrowetting device of viewing area is in light transmission state；

When described predetermined display area needs under peep-proof display pattern, control described predetermined display area Electrowetting device is in shading status；

Wherein, described predetermined display area visual angle under described peep-proof display pattern is less than described normal aobvious Show the visual angle under pattern.