WO2020001381A1

WO2020001381A1 - Display panel, manufacturing method therefor, and mobile terminal

Info

Publication number: WO2020001381A1
Application number: PCT/CN2019/092277
Authority: WO
Inventors: 黄凯; 何宗文; 朱华胜
Original assignee: 维沃移动通信有限公司
Priority date: 2018-06-27
Filing date: 2019-06-21
Publication date: 2020-01-02
Also published as: CN108831917A

Abstract

Provided in the present disclosure are a display panel and a manufacturing method therefor, and a mobile terminal. The display panel comprises: a glass cover plate and a glass substrate disposed opposite to each other; wherein a surface of the glass cover plate facing toward the glass substrate is provided with a touch sensing layer, and a polarizer is disposed on the touch sensing layer; a surface of the glass substrate facing toward the glass cover plate is provided with a plurality of organic light-emitting pixel units, the plurality of organic light-emitting pixel units is covered with a cured optical cement thereon, and the optical cement is connected to the polarizer.

Description

Display panel, manufacturing method thereof, and mobile terminal

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810677730.3 filed in China on June 27, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of display technology, and in particular, to a display panel, a manufacturing method thereof, and a mobile terminal.

Background technique

With the full popularity of mobile phones, mobile phones have become an indispensable tool for carrying around; and the thickness of the entire machine has greatly affected the user experience. The display is a very important device in the whole machine. The thickness of the whole machine is obtained by stacking the display and camera. Therefore, the thickness of the whole machine is limited by the display. If the thickness of the display is reduced, the thickness of the whole machine can be correspondingly reduced. Thinning.

The thickness of the display module in the related technology is large, which is not conducive to the realization of thinness and thinness of the electronic device, and its function is relatively single.

Summary of the invention

The embodiments of the present disclosure provide a display panel, a method for manufacturing the same, and a mobile terminal, in order to solve the problem that the display panel is arranged in a related art to make the thickness of the display panel larger, which is not conducive to thinning and thinning the mobile terminal.

In order to solve the above technical problems, an embodiment of the present disclosure provides a display panel, including:

Cover glass and substrate glass opposite to each other;

Wherein, a touch sensing layer is disposed on a surface of the cover glass facing the substrate glass, and a polarizer is disposed on the touch sensing layer;

A plurality of organic light emitting pixel units are disposed on a surface of the substrate glass facing the cover glass, and the plurality of organic light emitting pixel units are covered with a cured optical glue, and the optical glue is connected to the polarizer.

An embodiment of the present disclosure further provides a method for manufacturing a display panel, including:

Making a touch sensing layer on the surface of the cover glass facing the substrate glass;

Setting a polarizer on the touch sensing layer;

Fabricating a plurality of organic light emitting pixel units on a surface of the substrate glass facing the cover glass;

Connecting the substrate glass and the polarizer through an optical glue;

The optical glue covers the plurality of organic light emitting pixel units.

An embodiment of the present disclosure further provides a mobile terminal including the above display panel.

The beneficial effects of this disclosure are:

In the above solution, by using the cover glass and the substrate glass to set the touch sensing layer and the organic light-emitting pixel unit, the number of glass layers on the display panel is reduced, the thickness of the display panel is reduced, and the mobile terminal is thin and light. Into.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows one of the main structural diagrams of an AMOLED display module in the related art;

FIG. 2 shows the second schematic diagram of the main structure of the AMOLED display module in the related art;

3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

4 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure;

5 is a schematic structural diagram of a cover glass after the touch sensing layer, the polarizer, and the first flexible circuit board are disposed according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a substrate glass after the organic light-emitting pixel unit, the first wiring, and the second flexible circuit board are disposed according to an embodiment of the present disclosure.

detailed description

To make the objectives, technical solutions, and advantages of the present disclosure more clear, the present disclosure will be described in detail below with reference to the drawings and specific embodiments.

The structure of the Active Matrix / Organic Light Emitting Diode (AMOLED) display itself is shown in Figure 1. The main structure of the AMOLED display module is: the top polarizer 11, the top glass 12, and the bottom glass 13 The upper glass 12 and the lower glass 13 are bonded by the surrounding edge sealant 14 to form an intermediate sealed hollow structure; the surface of the upper glass 12 is plated with a touch sensing layer 15 and then touched with the mobile phone main board 16 (FPC) The control board is connected to realize the touch function. The surface of the lower glass 13 is a pixel 17 (RGB) composed of organic light-emitting material and an inert gas. The outer edge of the pixel is a display layer ITO (Indium Tin Oxide) trace 18, and then the display layer FPC trace 19 and the main The control board is connected to realize the display function.

As can be seen from FIG. 2, the total thickness of the AMOLED display module is composed of the thickness of the cover glass 21, liquid optical adhesive 20, polarizer 11, upper glass 12, touch sensing layer 15, frame adhesive 14, and lower glass 13. The cover glass mainly plays a protective role, making the thickness of the display module in the related technology larger, which is not conducive to the realization of thinner and lighter electronic equipment, and its function is relatively single.

The present disclosure is directed to a display panel installation method in the related art, which makes the display panel thicker and is not conducive to the problem of thinness and thinness of a mobile terminal, and provides a display panel, a manufacturing method thereof, and a mobile terminal.

As shown in FIG. 3, an embodiment of the present disclosure provides a display panel including:

Cover glass 100 and substrate glass 200 that are oppositely disposed;

A touch sensing layer 101 is disposed on a surface of the cover glass 100 facing the substrate glass 200, and a polarizer 110 is disposed on the touch sensing layer 101;

A plurality of organic light emitting pixel units 201 are disposed on a surface of the substrate glass 200 facing the cover glass 100, and the plurality of organic light emitting pixel units 201 are covered with a cured optical glue 210. The polarizer 110 is connected.

It should be noted that the substrate glass 200 in the embodiment of the present disclosure refers to the aforementioned lower glass, and the cover glass 100 refers to the aforementioned glass layer that can protect the lower glass and the upper glass. After the panel is assembled into a mobile terminal, the cover glass 100 is located on an outer surface of the mobile terminal.

By using the cover glass 100 and the substrate glass 200 to set the touch sensing layer 101 and the organic light-emitting pixel unit 201, the cover glass 100 not only has the function of protecting the substrate glass 200, but also can set the touch sensing layer 101. The cover glass 100 achieves the functions of protecting the substrate glass and replacing the upper glass at the same time, reducing the setting of a layer of glass, thereby reducing the thickness of the display panel.

It should be noted that the area of the polarizer 110 is smaller than the area of the substrate glass 200, and the area of the polarizer 110 is larger than the area occupied by the organic light-emitting pixel units 201 on the substrate glass 200. It is ensured that the polarizing plate 110 can completely cover the plurality of organic light emitting pixel units 101. When the polarizing plate 110 is set, in order to ensure that the plurality of organic light emitting pixel units 101 can be sealed, the polarizing plate 110 faces the organic light emitting pixel unit directly. Outside of the area occupied by 201, a polarizer 110 is also covered in a predetermined range around the area of the organic light-emitting pixel unit 201. The optical adhesive 210 is used to directly face the area of the organic light-emitting pixel unit 201 and the substrate glass 200 with the optical adhesive 210. The optical glue 210 is filled in the area to ensure that the polarizer 110 is completely covered with the optical glue 210 directly below the substrate glass 200, and the organic light-emitting pixel unit 201 is wrapped in the optical glue 210, thereby sealing the organic light-emitting pixel unit 201.

Specifically, in order to effectively protect the substrate glass 200, the cover glass 100 is disposed in parallel with the substrate glass 200, and a planar area of the cover glass 100 is larger than a planar area of the substrate glass 200.

Specifically, in order to realize the display function of the display panel, a surface of the substrate glass 200 facing the cover glass 100 is further provided with a first trace 202, and the first trace 202 and the plurality of organic light emitting elements The pixel unit 201 is electrically connected.

Specifically, the first trace 202 in the embodiment of the present disclosure is disposed between one edge of a surface of the substrate glass 200 facing the cover glass 100 and a region where the plurality of organic light-emitting pixel units 201 are disposed. When the substrate glass 200 and the polarizer 110 are connected by using the optical adhesive 210, the optical adhesive located between one edge of the surface of the substrate glass 200 facing the cover glass 100 and the area provided by the plurality of organic light emitting pixel units 201 210 is disposed above the first trace 202. The first trace 202 is an indium tin oxide (ITO) trace for display.

Further, the display panel further includes:

A first flexible circuit board 120 electrically connected to the touch sensing layer 101, the first flexible circuit board 120 is bent from a first side of the substrate glass 200 to a side facing away from the cover glass 100;

A second flexible circuit board 220 electrically connected to the first wiring 202, and the second flexible circuit board 220 is bent from a first side of the substrate glass 200 to a side facing away from the cover glass 100;

The first side is a side of the substrate glass 200 facing the cover glass 100, and the second flexible circuit board 220 is located in a groove structure formed by bending the first flexible circuit board 120.

It should be noted that the first flexible circuit board 120 is a flexible circuit board for touch routing, and the second flexible circuit board 220 is a flexible circuit board for displaying routing.

It should be noted that, in the embodiment of the present disclosure, the touch sensing layer is plated on the lower surface of the cover glass 100, and the flexible wiring board for touch routing is also bound to the lower surface of the cover glass 100, and the polarizer 110 is attached to The lower surface of the cover glass 100 is adhered to the entire surface of the substrate glass 200 through the liquid optical adhesive 210 to ensure sealing and adhesion. Because the entire surface of the cover glass 100 and the substrate glass 200 is filled with liquid optical adhesive 210, after the optical adhesive 210 is cured, an absolutely sealed solid structure is formed between the two layers of glass, and the cover glass 100 and the substrate glass 200 are simultaneously formed. Filled with optical glue, compared with the design method of only filling the frame glue around the related art, it has more reliable adhesive strength and higher resistance to external force. In this way, the thickness of the entire display panel can be saved, and the thickness of the upper layer of glass (generally 0.2 to 0.25 mm) can be omitted compared to the solutions mentioned in the related art. This can reduce the thickness of the entire display panel. It also saves material costs.

Further, as shown in FIG. 4, an embodiment of the present disclosure further provides a method for manufacturing the display panel, which includes steps 401 to 404.

In step 401, a touch sensing layer 101 is formed on a surface of the cover glass 100 facing the substrate glass 200.

In this step, the touch sensing layer 101 is plated on the lower surface of the cover glass 100.

Step 402: A polarizer 110 is disposed on the touch sensing layer 101.

In this step, the polarizing film 110 is covered on the touch sensing layer 101 to achieve a fixed connection between the polarizing film 110 and the cover glass 100.

In step 403, a plurality of organic light-emitting pixel units 201 are manufactured on a surface of the substrate glass 200 facing the cover glass 100.

It should be noted that the organic light emitting pixel unit 201 (referring to RGB pixel points) has a plurality of, and has a predetermined regular distribution in a specific region of the substrate glass 200.

Step 404: Connect the substrate glass 200 and the polarizer 110 through an optical adhesive 210.

The optical glue 210 covers the organic light-emitting pixel units 201.

Specifically, the cover glass 100 is disposed in parallel with the substrate glass 200, and a planar area of the cover glass 100 is larger than a planar area of the substrate glass 200.

Further, after the step of fabricating a plurality of organic light emitting pixel units on a surface of the substrate glass facing the cover glass, the method further includes:

A first trace 202 is formed on a surface of the substrate glass 200 facing the cover glass 100 to be electrically connected to the organic light emitting pixel units 201.

Further, after step 402, the method further includes:

A first flexible circuit board 120 electrically connected to the touch sensing layer 101 is provided, and the first flexible circuit board 120 is bent from a first side of the substrate glass 200 to a distance away from the cover glass 100. One side

After step 403, the method further includes:

A second flexible circuit board 220 electrically connected to the first wiring 202 is provided, and the second flexible circuit board 220 is bent from the first side of the substrate glass 200 to a distance away from the cover glass 100. One side

Specifically, the structure diagram of the cover glass 100 after the touch sensing layer 101, the polarizer 110, and the first flexible circuit board 120 are set is shown in FIG. 5; the organic light emitting pixel unit 201, the first wiring 202, and the first After the two flexible circuit boards 220 are installed, the structural diagram of the substrate glass 200 is shown in FIG. 6. After the cover glass 100 and the substrate glass 200 are respectively installed, the substrate glass 200 and the polarizer 110 are connected through the optical glue 210. A complete display panel is completed.

It should be noted that the method of fixing the entire surface by using optical glue is simpler than the process of filling inert gas between two layers of glass in the related art and absolutely sealing it, which simplifies the process. The display panel saves the material cost of a layer of glass, while reducing the thickness of the display panel and improving the reliability of the display panel.

Specifically, the cover glass is disposed on an outer surface of the mobile terminal.

It should be noted that the mobile terminal provided with the display panel can reduce the thickness of the mobile terminal, reduce the weight of the mobile terminal, facilitate the carrying of the user, and improve the user experience.

It should be noted that the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a car terminal, a wearable device, a pedometer, and the like.

The above is an optional implementation of the present disclosure. It should be noted that for ordinary people in the technical field, several improvements and retouches can be made without departing from the principles described in the present disclosure. These improvements and retouches are also Within the scope of this disclosure.

Claims

A display panel includes:

Cover glass and substrate glass opposite to each other;

Wherein, a touch sensing layer is disposed on a surface of the cover glass facing the substrate glass, and a polarizer is disposed on the touch sensing layer;

A plurality of organic light emitting pixel units are disposed on a surface of the substrate glass facing the cover glass, and the plurality of organic light emitting pixel units are covered with a cured optical glue, and the optical glue is connected to the polarizer.
The display panel according to claim 1, wherein the cover glass is disposed in parallel with the substrate glass, and a planar area of the cover glass is larger than a planar area of the substrate glass.
The display panel according to claim 1, wherein a surface of the substrate glass facing the cover glass is further provided with a first trace, and the first trace is electrically connected to the plurality of organic light emitting pixel units.
The display panel according to claim 3, further comprising:

A first flexible circuit board electrically connected to the touch sensing layer, the first flexible circuit board being bent from a first side of the substrate glass to a side facing away from the cover glass;

A second flexible circuit board electrically connected to the first wiring, the second flexible circuit board being bent from a first side of the substrate glass to a side facing away from the cover glass;

The first side is a side of the substrate glass facing the cover glass, and the second flexible circuit board is located in a groove structure formed by bending the first flexible circuit board.
A method for manufacturing a display panel includes:

Making a touch sensing layer on the surface of the cover glass facing the substrate glass;

Setting a polarizer on the touch sensing layer;

Fabricating a plurality of organic light emitting pixel units on a surface of the substrate glass facing the cover glass;

Connecting the substrate glass and the polarizer through an optical glue;

The optical glue covers the plurality of organic light emitting pixel units.
The method for manufacturing a display panel according to claim 5, wherein after the step of fabricating a plurality of organic light emitting pixel units on a surface of the substrate glass facing the cover glass, the method further comprises:

A first trace electrically connected to the plurality of organic light emitting pixel units is formed on a surface of the substrate glass facing the cover glass.
The method for manufacturing a display panel according to claim 6, wherein after the step of fabricating a touch sensing layer on a surface of the cover glass facing the substrate glass, the method further comprises:

Setting a first flexible circuit board electrically connected to the touch sensing layer, and bending the first flexible circuit board from a first side of the substrate glass to a side facing away from the cover glass;

After the step of fabricating the first trace connected to the plurality of organic light emitting pixel units on the surface of the substrate glass facing the cover glass, the method further includes:

Setting a second flexible circuit board electrically connected to the first wiring, and bending the second flexible circuit board from a first side of the substrate glass to a side facing away from the cover glass;

The first side is a side of the substrate glass facing the cover glass, and the second flexible circuit board is located in a groove structure formed by bending the first flexible circuit board.
The method for manufacturing a display panel according to claim 5, wherein the cover glass is disposed in parallel with the substrate glass, and a planar area of the cover glass is larger than a planar area of the substrate glass.
A mobile terminal includes the display panel according to any one of claims 1 to 4.
The mobile terminal according to claim 9, wherein the cover glass is provided on an outer surface of the mobile terminal.