CN219046169U

CN219046169U - Front-mounted electric dimming function rear cover of decorative layer and electronic equipment

Info

Publication number: CN219046169U
Application number: CN202120042287.XU
Authority: CN
Inventors: 朴成珉; 唐根初
Original assignee: Anhui Jingzhuo Optical Display Technology Co Ltd
Current assignee: Anhui Jingzhuo Optical Display Technology Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2023-05-19
Anticipated expiration: 2031-01-07

Abstract

The utility model provides an electric dimming function rear cover with a front decorative layer and electronic equipment, wherein the electric dimming function rear cover comprises: a glass substrate; the glass substrate comprises a glass substrate, a decoration layer, an electrically dimming layer and a coloring layer which are sequentially overlapped on the non-contact side of the glass substrate, wherein the electrically dimming layer comprises a first electrode layer, a polymer dispersed liquid crystal layer and a second electrode layer which are overlapped, and a voltage control circuit which is electrically connected with the first electrode layer and the second electrode layer and used for adjusting the haze and the transmittance of the polymer dispersed liquid crystal layer. The utility model can actively control the haze and the transmittance of the polymer dispersed liquid crystal layer through voltage, and further can be matched with the decorative layer of the rear cover to present two or more appearance effects, so that consumers can actively control the appearance of the rear cover; the decorative layer is arranged between the glass substrate and the polymer dispersed liquid crystal layer in advance, so that the influence of the haze of the PDLC on the decorative layer is eliminated, the overall ID effect is improved, and the color effect is improved.

Description

Front-mounted electric dimming function rear cover of decorative layer and electronic equipment

Technical Field

The utility model relates to the field of functional devices of consumer electronics, in particular to an electric dimming function rear cover and electronic equipment with a front decorative layer based on a polymer dispersed liquid crystal technology.

Background

The rear cover of the conventional consumer electronic products such as mobile phones is made of metal, glass, plastic, leather, ceramic and the like, and the conventional products cannot realize active control of appearance effect change no matter which material is. In the prior art, the electrochromic material is used for controlling the rear cover of the mobile phone to realize the color change, but the response speed of the electrochromic material is slower, and the use requirement of a customer is completely not met. In the prior art, electrochromic is realized by adopting PDLC, the non-working state with PDLC has great haze, and has influence on the subsequent texture effect display, and the whole machine effect is poor, thereby giving consumers poor sensory experience.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a color-changing rear cover with a front decorative layer based on a polymer dispersed liquid crystal layer dimming technology, and a consumer can actively control the color-changing rear cover to realize two or more appearance effects, and the specific technical scheme is as follows:

an electrically-induced dimming functional rear cover with a front decorative layer, comprising:

a glass substrate;

a decorative layer, an electrically-dimming layer and a coloring layer sequentially stacked on the non-contact side of the glass substrate, the electrically-dimming layer including a first electrode layer, a polymer dispersed liquid crystal layer and a second electrode layer which are stacked, and

and the voltage control circuit is electrically connected with the first electrode layer and the second electrode layer and is used for adjusting the haze and the transmittance of the polymer dispersed liquid crystal layer.

Further, a first coating layer is arranged between the decorative layer and the electrically-induced dimming layer.

Further, a second coating layer is arranged between the electrically-induced dimming layer and the coloring layer.

Further, the decorative layer is connected with the glass substrate through an optical adhesive layer.

Further, in the process that the voltage applied by the voltage control circuit gradually increases, the polymer dispersed liquid crystal layer gradually changes from a high haze state to a low haze transparent state.

The utility model also provides electronic equipment, and the rear cover with the electric dimming function is adopted.

According to the technical scheme, the polymer dispersed liquid crystal layer is arranged in the rear cover, so that the haze and the transmittance of the polymer dispersed liquid crystal layer can be actively controlled through voltage, and further two or more appearance effects can be presented by matching with the decorative layer of the rear cover, and a consumer can actively control the appearance of the rear cover; the decorative layer is arranged between the glass substrate and the polymer dispersed liquid crystal layer in advance, so that the influence of the haze of the PDLC on the decorative layer is eliminated, the overall ID effect is improved, and the color effect is improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a schematic diagram of the working principle of the present utility model.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and detailed embodiments, and before the technical solutions of the embodiments of the present utility model are described in detail, the terms and terms involved will be explained, and in the present specification, the components with the same names or the same reference numerals represent similar or identical structures, and are only limited for illustrative purposes.

As shown in fig. 1, the utility model provides an electrically-induced dimming functional back cover, which comprises a glass substrate 1, a decorative layer 2, an electrically-induced dimming layer 3 and a coloring layer 4 which are sequentially stacked, wherein the decorative layer, the electrically-induced dimming layer and the coloring layer are arranged on a non-contact side of the glass substrate, and the electrically-induced dimming layer and the decorative layer and the coloring layer can be connected through optical cement.

The electrically tunable optical layer 3 includes a first electrode layer 32, a polymer dispersed liquid crystal layer 33, and a second electrode layer 34, which are stacked. Further, a first coating layer 31 is disposed between the decorative layer and the first electrode layer 32, and a second coating layer 35 is disposed between the second electrode layer 34 and the coloring layer.

The first coating layer 31 and the second coating layer 35 are transparent polymer substrates, and can be transparent film substrates such as PET, COP (cyclic olefin polymer), PI polyimide, etc., with a thickness ranging from 10 to 300 micrometers.

The material of the first electrode layer 32 and the second electrode layer 34 may be one of the transparent conductive materials such as ITO, FTO, AZO, nano silver paste, metal mesh, PEDOT/PSS, metal oxide/metal oxide composite electrode layer, etc., and the sheet resistance range is 10-1000 ohms, preferably 100-800 ohms.

The polymer dispersed liquid crystal layer 33 (PDLC layer) mainly contains polymer gel and liquid crystal, and optionally also spacer particles, and the thickness of the PDLC layer ranges from 5 to 200 micrometers.

The polymer dispersed liquid crystal layer 33 is an opaque state in which liquid crystal is dispersed in an organic solid polymer matrix in small droplets on the order of micrometers, and since the optical axes of the small droplets composed of liquid crystal molecules are in a free orientation, the refractive index thereof does not match that of the matrix, and light is strongly scattered by the droplets when passing through the matrix, giving a high haze. The application of the electric field adjusts the optical axis orientation of the liquid crystal droplets, which when the refractive indices of the liquid crystal and the polymer matrix are matched, assume a transparent state, and when the electric field is removed, the liquid crystal droplets resume their original high haze state.

Therefore, as shown in fig. 2, the electrically dimming functional back cover of the present utility model further includes a voltage control circuit 5 electrically connected to the first electrode layer 32 and the second electrode layer 34, that is, by using the characteristics of the polymer dispersed liquid crystal layer, the polymer dispersed liquid crystal layer gradually changes from a high haze state to a low haze transparent state in the process of gradually increasing the applied voltage of the voltage control circuit, so as to be used for adjusting the haze and the transmittance of the polymer dispersed liquid crystal layer.

The decorative layer 2 may be a film layer with textures and/or patterns, in this embodiment, the decorative layer is a UV texture layer, or a UV texture layer and a non-conductive brightness enhancing coating layer that are stacked and arranged may be selected, so that a glare film may be formed. The UV texture layer comprises a UV adhesive layer with the thickness ranging from 1 to 100 microns, preferably 5 to 20 microns, and the UV adhesive layer is provided with embossed textures, wherein the depth of the textures is smaller than the thickness of the adhesive layer; the non-conductive brightening coating material can be selected from silicon oxide, niobium oxide, indium oxide, titanium oxide, zirconium oxide, aluminum oxide and the like, and can be processed by adopting a physical deposition mode, including magnetron sputtering, electron beam evaporation and the like, and the thickness of the film layer is 20-800 nm.

The coloring layer 4 is an ink layer, and may be formed by screen printing, ink-jet printing, or the like.

According to the utility model, the thin film device with the PDLC layer and the decorative layer are combined, when no voltage is applied, the PDLC layer presents a high haze state, and the high haze of the PDLC layer does not influence the display of the decorative layer because the decorative layer is positioned between the glass substrate and the PDLC layer, so that the superposition effect of the decorative layer and the haze PDLC layer can be seen; when alternating voltage V1 is applied, the PDLC presents a transparent state with low haze, and the superposition effect of the decorative layer and the coloring layer can be seen; the control voltage is smaller than V1, the PDLC haze can be kept at a certain intermediate value, and the whole rear cover presents an intermediate state of the two effects. The voltage is gradually increased or reduced, and the gradual effect can be also displayed. V1 ranges from 5 to 220V, preferably from 5 to 36V.

Further, the decorative layer 2 is further connected to the glass substrate by an optical cement layer 6, and the thickness of the optical cement ranges from 10 to 120 micrometers, preferably from 18 to 50 micrometers.

The utility model also provides electronic equipment which comprises the electric dimming function rear cover structure, and the electronic equipment can be a mobile phone, a PC panel, a touch screen and the like.

The above-described embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims

1. An electrically-induced dimming functional rear cover with a front decorative layer, comprising:

a glass substrate;

2. The electrically-actuated dimming functional back cover as claimed in claim 1, wherein a first coating layer is disposed between the decorative layer and the electrically-actuated dimming layer.

3. The electrically-tunable optical functional rear cover of claim 1, wherein a second coating layer is disposed between the electrically-tunable optical layer and the colored layer.

4. The electrically-actuated dimming function back cover as claimed in claim 1, wherein the decorative layer is connected to the glass substrate through an optical adhesive layer.

5. The electrically-tunable optical rear cover of any one of claims 1 to 4, wherein the polymer dispersed liquid crystal layer gradually changes from a high haze state to a low haze transparent state during the voltage applied by the voltage control circuit gradually increases.

6. The electrically-actuated dimming functional rear cover as claimed in claim 1, wherein the decorative layer has a textured and/or patterned film layer.

7. The electrically-actuated dimming functional back cover of claim 1, wherein the coloring layer is an ink layer.

8. An electronic device comprising an electrically powered dimming functional rear cover according to any of claims 1 to 7.