WO2018103229A1

WO2018103229A1 - Glass cover plate, glass cover plate manufacturing method, and 3d display apparatus

Info

Publication number: WO2018103229A1
Application number: PCT/CN2017/077609
Authority: WO
Inventors: 贺曙; 刘晓林
Original assignee: 广东未来科技有限公司
Priority date: 2016-12-05
Filing date: 2017-03-22
Publication date: 2018-06-14
Also published as: CN108152974A

Abstract

Provided is a glass cover plate (130), comprising a glass substrate layer (131) and a slit raster pattern layer (133), the slit raster pattern layer being arranged on the inner surface of the glass substrate layer; the slit raster pattern layer comprises a plurality of slit raster units (132), the plurality of slit raster units being arranged at intervals in opposite pairs on the inner surface of the glass substrate layer, forming an evenly distributed plurality of slits to form a slit raster pattern. Also provided is a 3D display apparatus (100) using the glass cover plate, and a glass cover plate manufacturing method.

Description

Glass cover plate, glass cover plate manufacturing method and 3D display device

Technical field

The present invention relates to the field of stereoscopic display technologies, and in particular, to a glass cover, a method for fabricating a cover glass, and a 3D display device.

Background technique

At present, there are a variety of naked-eye 3D products on the market, such as cell phone/tablets for liquid crystal slit gratings, cell phones/tablets for cylindrical lens films, and cell phones/tablets for liquid crystal lenses. These products need to add 3D optics to the original 2D products, such as liquid crystal slit gratings, lens films, liquid crystal lenses, and adding these devices will undoubtedly increase the thickness and weight of the products, which is a portable handheld terminal. Disadvantages. And with the development of touch technology, in cell technology has become the standard of all brands' flagship models, showing that in cell technology will inevitably become the market trend.

However, after the 3D optics are attached to the display, a multi-layer medium is added between the glass cover and the touch layer located inside the display, which may affect the touch function of the module or even invalidate it.

Therefore, it is necessary to provide a glass cover that can realize the in cell technology in the touch display module of the 3D product, and does not affect the touch function of the touch display module, and the 3D display device using the glass cover and A method of making the glass cover is prepared.

Summary of the invention

The technical problem to be solved by the present invention is that when the in cell technology is implemented in the 3D product, the 3D optical device is required to be added between the glass cover and the touch layer located inside the display, thereby affecting the touch function of the touch display module. .

In order to solve the above technical problem, the present invention provides a glass cover plate comprising a glass substrate layer and a slit grating pattern layer; the slit grating pattern layer is fixedly disposed on an inner surface of the glass substrate layer for 2D Display conversion to form a 3D display; The slit grating pattern layer includes a plurality of slit grating units arranged in parallel and spaced apart from each other, and slits are formed between two adjacent slit grating units.

In a preferred embodiment of the cover glass panel provided by the present invention, a plurality of the slit grating units are disposed at equal intervals.

In a preferred embodiment of the cover glass of the present invention, each of the slit grating units includes a light absorbing layer and a light reflecting layer stacked on each other, and the light absorbing layer is located on the glass substrate layer and the Between the reflective layers.

In a preferred embodiment of the cover glass of the present invention, the orthographic projections of the light absorbing layer and the light reflecting layer are completely coincident in a direction perpendicular to the glass substrate layer.

In a preferred embodiment of the glass cover provided by the present invention, the cover glass further includes a transparent protective layer completely covering the slit grating unit, and the slit grating unit is sandwiched by the transparent protection Between the layer and the layer of glass substrate.

In a preferred embodiment of the cover glass of the present invention, the transparent protective layer extends into the slit and covers the slit.

In a preferred embodiment of the cover glass panel provided by the present invention, any two of the slit grating units have the same width.

In a preferred embodiment of the glass cover provided by the present invention, the outer surface of the glass substrate layer is tempered and anti-fingerprinted.

The invention also provides a method for manufacturing a glass cover plate, the method comprising the following steps:

Providing a glass substrate as a glass substrate layer;

Forming a slit grating pattern layer, forming a plurality of slit grating units arranged parallel to each other on the inner surface of the glass substrate layer, and forming slits between the adjacent two slit grating units The slit grating unit and the slit jointly form the slit grating pattern layer;

The transparent protective coating is formed by forming a transparent protective coating on the surface of the slit grating pattern layer away from the glass substrate layer, thereby obtaining the glass cover.

In a preferred embodiment of the method for fabricating the cover glass of the present invention, in the step of forming the slit grating pattern layer, the forming the slit grating unit specifically includes the following steps: in the glass substrate layer a plurality of strip-shaped light absorbing units of equal width are formed on the inner surface, and the light absorbing units are equally spaced to form a suction a light reflecting layer; a light reflecting unit is formed on a surface of the light absorbing unit on a side away from the glass substrate layer, thereby forming a light reflecting layer, and the light reflecting layer and the light absorbing layer are positive in a direction perpendicular to the glass substrate layer The projections are completely coincident.

In a preferred embodiment of the method for fabricating a cover glass of the present invention, after the step of forming the slit grating pattern layer, the method further includes the following steps: performing touch optimization on an outer surface of the glass substrate layer Processing, the optimization process includes tempering and anti-fingerprint processing.

In a preferred embodiment of the method of fabricating the cover glass of the present invention, before the step of forming the slit grating pattern layer, the method further includes the step of cleaning the inner surface of the glass substrate layer.

In a preferred embodiment of the method for fabricating a cover glass provided by the present invention, the slit grating pattern layer is formed by a film-yellow etching method.

The present invention also provides a 3D display device comprising a display and a glass cover provided by the present invention, the glass cover being disposed on a light exiting side of the display.

Compared with the prior art, in the method for manufacturing a 3D display device and a cover glass provided by the present invention, a slit grating pattern layer is disposed on one side of the display, and the display can be The provided parallax image is converted into a three-dimensional image to realize a 3D display function. Therefore, the 3D display device can implement the in cell technology in the touch display module without affecting the touch function of the touch display module.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can obtain other drawings according to these drawings without any creative work, among which:

1 is a schematic structural view of a 3D display device provided by the present invention;

2 is a schematic structural view of a glass cover plate in the 3D display device shown in FIG. 1;

3 is a schematic diagram showing the optical principle of a slit grating type 3D technology;

4 is a flow chart showing a method of preparing the glass cover plate shown in FIG. 2;

Figure 5 is a schematic flow chart of the preparation method shown in Figure 4;

Figure 6 is a block diagram showing the flow of step S3 in the preparation method shown in Figure 4.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 and FIG. 2 simultaneously, the 3D display device 100 includes a display 110 and a glass cover 130 disposed on a light exiting side of the display 110. Alternatively, the 3D display device 100 may be a device having a display and a touch screen function, such as a mobile phone, a tablet, an in-vehicle computer, a vehicle display, a computer, etc., which is not limited by the present invention.

The display 110 can provide a parallax image, including but not limited to a TFT (Thin Film Transistor) display, an OLED (Organic Light-Emitting Diode) display, a PDP (Plasma Display Panel) display, an EL (electro-luminescence) display, or the like. The parallax image can be converted into a three-dimensional image by the glass cover 130.

The cover glass 130 includes a glass substrate layer 131, a slit grating pattern layer 133, and a transparent protective layer 135. The glass substrate layer 131, the slit grating pattern layer 133, and the transparent protective layer 135 are sequentially disposed in a direction toward the display 110.

The glass substrate layer 131 is a general glass substrate for protecting a display of a display device. One side of the glass substrate layer 131 facing the display 110 is set as an inner surface, and one side away from the display 110 is an outer surface. It should be understood that the outer surface of the glass substrate layer 131 may be subjected to a coating treatment such as tempering treatment or anti-fingerprint treatment or the like.

The slit grating pattern layer 133 is disposed on an inner surface of the glass substrate layer 131. Specifically, the slit grating pattern layer 133 includes a plurality of slit grating units 132, and the plurality of slit grating units 132 are disposed on the inner surface of the glass substrate layer 131 in parallel and spaced apart from each other, and are uniformly distributed. Multiple slits 134 to form slits Raster pattern.

Between the plurality of slit grating units 132, any two of the slit grating units 132 have the same width; any two of the slits 134 have the same width, that is, the slit grating unit 132 and the like. Spacing settings.

In the present embodiment, each of the slit grating units 132 includes an overlying light absorbing layer 136 and a light reflecting layer 137. The light absorbing layer 136 and the light reflecting layer 137 are sequentially disposed in a direction away from the glass substrate layer 131. Specifically, each of the slit grating units 132 is disposed on an inner surface of the glass substrate layer 131 through the light absorbing layer 136.

Further, in a direction perpendicular to the glass substrate layer 131, the projections of the light absorbing layer 136 and the light reflecting layer 137 completely coincide.

The transparent protective layer 135 covers the plurality of slit grating units 132 such that a plurality of the slit grating units 132 are interposed between the transparent protective layer 135 and the glass substrate layer 131. Specifically, the transparent protective layer 135 covers the corresponding slit grating unit 132 by directly covering the reflective layer 137.

Further, the transparent protective layer 135 also extends to the slit 134 between the two adjacent slit grating units 132 and covers the slit 134.

Next, the operation principle of the 3D display device 100 will be described.

Referring to FIG. 3, FIG. 3 is an optical schematic diagram of a slit grating type 3D technology. The slit grating of the glass cover 130 disposed on the light-emitting side of the display 110 can project the left and right pictures (L represents the left picture and R represents the right picture) of the parallax image into the left and right eyes of the observer, thereby making the observer The full 3D effect can be seen in the right place. That is to convert from 2D effect to 3D effect.

Moreover, the relationship between the observer's observation distance S and the pupil aperture distance E, the distance d between the display layer and the grating layer, and the display pixel pitch m is as follows:

S = E × d / m.

In order to control the observation distance S at an appropriate distance and ensure the normal use of the touch function of the terminal, the slit grating pattern layer 133 capable of realizing the 3D display function is designed on the glass substrate by using the touch structure of the in cell. The layer 131 is adjacent to one side of the display 110 and the viewing distance can be controlled at a suitable distance.

Optionally, a touch unit is included in the display 110, and the touch The control unit may be on the inside of the lower substrate or on the inside or outside of the upper substrate.

In the present embodiment, the glass cover plate 130 having a grating pattern is precisely attached to the pixels of the display 110 by the alignment mark point, wherein the bonding layer is not illustrated.

Please refer to FIG. 4 and FIG. 5 simultaneously. The present invention provides a method for preparing a glass cover plate 200. The glass cover plate shown in FIG. 2 of the present invention is taken as an example, and specifically includes the following steps:

S1. A glass substrate is provided as the glass substrate layer 131.

S2, cleaning the inner surface of the glass substrate layer 131;

S3, forming a slit grating pattern layer, forming a plurality of slit grating units 132 arranged parallel to each other on the inner surface of the glass substrate layer 131, and causing two adjacent slit grating units 132 A slit 134 is formed therebetween, and the slit grating unit forms the slit grating pattern layer 133 together with the slit.

Referring to FIG. 6, in step S3, in the forming step of the slit grating pattern layer 133, forming the slit grating unit 132 specifically includes the following steps:

S31, a plurality of strip-shaped light absorbing units (not labeled) having the same width are formed on the inner surface of the glass substrate layer 131, and the light absorbing units are disposed at equal intervals to form the light absorbing layer 136.

S32, forming a light reflecting unit (not labeled) on a surface of the light absorbing unit away from the glass substrate layer 131, thereby forming a light reflecting layer 137; and making the light reflecting layer 137 and the light absorbing layer 136 perpendicular to the The orthographic projections in the direction of the glass substrate layer 131 are completely overlapped.

Specifically, in step S3, the slit grating unit 132 may be fabricated by a film-yellow etching method. Further, in step S31, when the light absorbing layer 136 is formed by photolithography, the black window edge of the glass substrate layer 131 or the entire cover panel except the window is also produced.

In step S32, when the light-reflecting layer 137 is formed by a photolithography process, a mark that is aligned with the display screen is also produced.

S4, forming a transparent protective coating, and forming a transparent protective coating 135 on a surface of the slit grating pattern layer 133 away from the glass substrate layer 131, thereby obtaining the glass cover 130.

In step S4, the transparent protective layer 135 can not only effectively allow light It is also possible to prevent abrasion damage to the slit grating pattern layer 133 in a subsequent process.

Step S5, performing touch optimization processing on the outer surface of the glass substrate layer 131, the optimization processing including tempering and anti-fingerprint processing. It can be understood that step S5 is not a necessary step.

As shown in FIG. 5, in the embodiment, after the step S5, the steps include: substrate cutting, CNC forming, surface treatment of the touch surface, cleaning, inspection, and packaging and shipping. Since these steps are the production process of the conventional cover, it will not be described here.

It can be understood that the surface treatment of the touch surface is the above step S5, and the step may be located in the sequence of steps as shown in FIG. 5, or may be the sequence of step S5 described above, which is feasible.

Compared with the prior art, the 3D display device 100 and the glass cover manufacturing method 200 provided by the present invention provide a slit grating pattern layer 133 on the glass cover 130, and the display 110 is passed through the slit grating pattern layer 133. The 3D display device 100 can implement the in cell technology in the touch display module without affecting the touch function of the touch display module.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A glass cover plate comprising a glass substrate layer and a slit grating pattern layer;

The slit grating pattern layer is fixedly disposed on an inner surface of the glass substrate layer for converting a 2D display into a 3D display;

The slit grating pattern layer includes a plurality of slit grating units arranged in parallel and spaced apart from each other, and slits are formed between two adjacent slit grating units.
The cover glass according to claim 1, wherein a plurality of said slit grating units are disposed at equal intervals.
The glass cover according to claim 2, wherein each of the slit grating units comprises a light absorbing layer and a light reflecting layer stacked on each other, and the light absorbing layer is located on the glass substrate layer and the light reflecting layer. between.
The glass cover according to claim 3, wherein the orthographic projection of the light absorbing layer and the light reflecting layer completely coincides in a direction perpendicular to the glass substrate layer.
The cover glass according to claim 1, wherein the cover glass further comprises a transparent protective layer completely covering the slit grating unit, the slit grating unit being sandwiched between the transparent protective layer and Between the glass substrate layers.
The glazing panel of claim 5 wherein said transparent protective layer extends into said slit and covers said slit.
The cover glass according to claim 1, wherein any two of said slit grating units have the same width.
The glass cover according to claim 1, wherein the outer surface of the glass substrate layer is tempered and anti-fingerprinted.
A method for manufacturing a glass cover, characterized in that the method comprises the following steps:

Providing a glass substrate as a glass substrate layer;

Forming a slit grating pattern layer, forming a plurality of slit grating units arranged in parallel with each other on the inner surface of the glass substrate layer, and making two adjacent slit gratings Forming a slit between the elements, the slit grating unit and the slit together forming the slit grating pattern layer;

The transparent protective coating is formed by forming a transparent protective coating on the surface of the slit grating pattern layer away from the glass substrate layer, thereby obtaining the glass cover.
The method of fabricating a cover glass according to claim 9, wherein in the forming step of the slit grating pattern layer, forming the slit grating unit specifically comprises the following steps:

Forming a plurality of strip-shaped light absorbing units of equal width on the inner surface of the glass substrate layer, and arranging the light absorbing units at equal intervals to form a light absorbing layer;

Forming a light reflecting unit on a surface of the light absorbing unit on a side away from the glass substrate layer, thereby forming a light reflecting layer, so that the light reflecting layer and the light absorbing layer completely coincide with each other in an orthographic projection perpendicular to the glass substrate layer direction .
The method of fabricating a cover glass according to claim 9, further comprising the following steps after the step of forming the slit grating pattern layer:

A touch optimization process is performed on an outer surface of the glass substrate layer, the optimization process including tempering and anti-fingerprint processing.
The method of fabricating a cover glass according to claim 9, further comprising the following steps before the step of forming the slit grating pattern layer:

The inner surface of the glass substrate layer is cleaned.
The method of fabricating a cover glass according to claim 9, wherein the slit grating pattern layer is formed by a film-yellow etching method.
A 3D display device comprising a display and a cover glass according to any one of claims 1 to 13, the cover glass being disposed on a light exiting side of the display.