HK1242036B - Display screen, display device and mobile terminal - Google Patents

Description

Display screen, display device and mobile terminal

Technical Field

The present invention relates to the field of electronic equipment, and in particular to a display screen, a display device and a mobile terminal.

Background Art

Compared with traditional screens, flexible screens have obvious advantages. Not only are they lighter and thinner in size, but they also consume less power than existing devices, which helps to improve the battery life of the device. At the same time, due to their bendable and flexible properties, their durability is much higher than previous screens, reducing the probability of accidental damage to the device.

In the prior art, flexible screens are applied to terminals to obtain bendable flexible terminals. When applying fingerprint recognition modules to existing flexible terminals, the inventors discovered the following defects: First, the silicon material in the fingerprint recognition module requires a relatively high temperature to be bonded to the flexible screen, which will cause significant damage to the flexible screen and affect the reliability of the flexible terminal; Second, the more times the flexible screen is bent, the more fine wrinkles will appear at the location where the fingerprint recognition module is bonded on the flexible screen, affecting the recognition accuracy of the fingerprint recognition module.

Summary of the Invention

The object of the present invention is to provide a display screen, a display device and a mobile terminal that are easy to attach to a fingerprint recognition module.

In order to solve the above technical problems, the present invention provides a display screen, including a flexible screen, a hard screen and a flexible circuit board, the flexible screen having a hollow area, the hard screen being arranged in the hollow area, the signal on the hard screen being bonded to the flexible circuit board, and the signal on the flexible circuit board being bonded to the flexible screen.

The present invention also provides a display device, comprising a fingerprint recognition module and the above-mentioned display screen.

The present invention also provides a mobile terminal comprising the above display device.

The display screen provided by the present invention is formed by arranging a hard screen in the hollow area of the flexible screen, and the hard screen is arranged in the hollow area of the flexible screen, and the flexible screen and the hard screen are spliced together to form a display screen, so that the display screen can not only be bent, but also the location where the hard screen is arranged increases the rigidity of the display screen to a certain extent, which facilitates the application of the display screen to various devices and facilitates the mounting of various components such as fingerprint recognition modules, thereby improving the reliability of the display screen.

The display device and mobile terminal provided by the present invention use the above-mentioned display screen. Since the display screen is provided with a hard screen, the fingerprint recognition module can be preferably mounted on the hard screen, thereby improving the reliability of the display device and the mobile terminal.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

FIG1 is a schematic diagram of a mobile terminal provided by an embodiment of the present invention;

FIG2 is a II cross-sectional view of the display device in the mobile terminal shown in FIG1 ;

FIG3 is a schematic diagram of a display device;

FIG. 4 is a schematic diagram of another display device.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to Figure 1 , an embodiment of the present invention provides a mobile terminal 100. The mobile terminal 100 can be any device with communication and storage capabilities, such as a tablet computer, mobile phone, e-reader, remote control, personal computer (PC), laptop computer, in-vehicle device, network television, wearable device, or other smart device with network capabilities. The mobile terminal 100 includes a display device 1 , which is primarily used to display images and facilitate touch operations.

Referring to Figures 1 and 2, the display device 1 includes a fingerprint recognition module 2 and a display screen 1. By setting the fingerprint recognition module 2 on the display screen 1, the fingerprint recognition module 2 can be used to operate the mobile terminal 100, such as locking the mobile terminal 100. The display screen 1 includes a flexible screen 11 and a hard screen 12. The flexible screen 11 has a hollow area 11c. The hard screen 12 is set in the hollow area 11c. The signal on the hard screen 12 is bonded to the flexible circuit board 13, and the signal on the flexible circuit board 13 is then bonded to the flexible screen 11 to achieve an electrical connection between the hard screen 12 and the flexible screen 11. The fingerprint recognition module 2 is set on the hard screen 12, so that the display device 1 has a fingerprint recognition function.

The display screen 1 is not only bendable, but also the location where the hard screen 12 is provided increases the rigidity of the display screen 1 to a certain extent, making it easier for the display screen 1 to be applied to various devices and for various components such as a fingerprint recognition module to be mounted, thereby improving the reliability of the display screen 1. The display device 1 and the mobile terminal 100 use the above-mentioned display screen 1. Since the display screen 1 is provided with the hard screen 12, the fingerprint recognition module can be better mounted on the hard screen 12, thereby improving the reliability of the display device 1 and the mobile terminal 100.

As can be understood, referring to Figure 2 , the flexible screen 11 is an OLED (Organic Light-Emitting Diode) screen. The flexible screen 11 has a first front surface 11a and a first back surface 11b, which are disposed opposite each other. The first front surface 11a faces the user and is capable of touch display operations, while the first back surface 11b is generally located inside the mobile terminal 100. The first front surface 11a has an integrally connected display area D1 and a non-display area D2. The display area D1 is used for displaying images and touch.

It is understandable that the flexible screen 11 is processed by laser cutting to form the hollow area 11c. Of course, in other embodiments, the flexible screen 11 can also be processed by other methods to form the hollow area 11c, such as by a CNC machine tool.

The hard screen 12 is an LED (Light Emitting Diode) screen. It has a second front side 12a and a second back side 12b, which are arranged in opposite directions. The second front side 12a faces the user and enables touch-screen operation, while the second back side 12b is generally located within the interior of the mobile terminal 100. The hard screen 12 is the same size and shape as the hollow area 11c, allowing it to be optimally positioned within the hollow area 11c, ensuring the integrity of the display screen 1.

Specifically, the flexible screen 11 and the hard screen 12 are electrically connected: the signal on the hard screen 12, that is, the TFT circuit in the hard screen 12, is hot-pressed to the flexible circuit board 13 through the FOG (Flex On Glass FPC) process, and the flexible circuit board 13 then hot-presses the signal to the TFT circuit of the flexible screen 11 through the FOG process to achieve electrical connection between the hard screen 12 and the flexible screen 11. Among them, the flexible circuit board 13 plays a role in signal conversion, and by relaying the signal of the hard screen 12, the signal of the hard screen 12 is bonded to the flexible screen 11, thereby achieving the connection of the electrical signals between the two. After the flexible circuit board 13 is connected to the motherboard of the mobile terminal 100, the motherboard can control the display of the flexible screen 11 and the hard screen 12.

Among them, the front of the flexible screen 11 and the front of the hard screen 12 are spliced together to form the first side of the display screen 1, and the back of the flexible screen 11 and the back of the hard screen 12 are spliced together to form the second side of the display screen 1.

It can be understood that the size of the flexible screen 11 is much larger than that of the hard screen 12, that is, the display screen 1 is mainly composed of the flexible screen 11, which ensures that the display screen 1 has a thinner thickness and better curvature.

As can be understood, the flexible screen 11 has a display area D1 for displaying images, and the hollow area 11c is located within the display area D1. By placing the hollow area 11c within the display area D1 of the display screen, the strength of the display area D1 at the location where the hollow area 11c is located is enhanced. Of course, in other embodiments, the hollow area 11c can also be located in the non-display area D2 of the flexible screen 11.

As can be understood, referring to FIG2 , the display screen 1 further includes a glass cover plate 14, which is laminated on the side of the display screen 1 displaying an image. Specifically, the display screen 1 is bent into a desired shape, and then the glass cover plate 14 is laminated on the first side of the entire display screen 1 using OCA (Optically Clear Adhesive) optical glue. Due to the rigidity of the glass cover plate 14, the display screen 1 can be fixed in a shape, and the complete glass cover plate 14 can simplify the installation of the display screen 1. Of course, in other embodiments, referring to FIG3 , the display screen 1 further includes a first cover plate 15 and a second cover plate 16. The first cover plate 15 is laminated on the side of the flexible screen 11 displaying an image, i.e., the first front surface 11a. The second cover plate 16 is laminated on the side of the hard screen 12 displaying an image, i.e., the second front surface 12a. The sidewalls 16a of the second cover plate 16 are bonded to the sidewalls 15a of the first cover plate 15. Specifically, the first cover plate 15 is a flexible and bendable plastic cover plate, and the second cover plate 16 is a glass cover plate. The flexible and bendable plastic cover plate ensures that the display screen 1 has better bendability.

Furthermore, referring to Figure 2 , the hard screen 12 has a non-display surface, and the fingerprint recognition module 2 is hot-pressed onto this non-display surface. Specifically, the non-display surface of the hard screen 12 is the second back surface 12b of the hard screen 12. The hard screen 12 has a certain strength, so hot-pressing the fingerprint recognition module 2 onto the second back surface 12b of the hard screen 12 does not damage the hard screen 12, thereby improving the reliability of the display screen 1. Furthermore, since the hard screen 12 is disposed within the hollowed-out area 11c, which is located within the display area D1 of the flexible screen 11, and the fingerprint recognition module 2 is hot-pressed onto the back surface of the hard screen 12, the fingerprint recognition module 2 is housed within the display device 1. This allows the hard screen 12 to not only perform fingerprint recognition but also display, thereby increasing the screen-to-body ratio of the mobile terminal 100. Of course, in other embodiments, referring to Figure 4 , the hard screen 12 may also include a hollow receiving groove 2a, where the dimensions of the receiving groove 2a are smaller than those of the hard screen 12, and the fingerprint recognition module 2 is housed within the receiving groove 2a. The hard screen 12 portion outside the accommodating groove 2a provides a certain degree of rigidity for the fingerprint recognition module 2 when the display screen 1 is bent, preventing the fingerprint recognition module 2 from bending at this location and affecting the accuracy of the fingerprint recognition module 2. It is understood that the accommodating groove 2a does not connect to the glass cover 14 above the second front surface 12a.

It can be understood that the size of the hard screen 12 is the same as the size of the fingerprint recognition module 2, which further reduces the proportion of the hard screen 12 in the display screen 1 and ensures good bendability of the display screen 1.

It is understandable that the fingerprint recognition module 2 is an optical fingerprint recognition device. Of course, in other embodiments, the fingerprint recognition module 2 can also be an infrared fingerprint recognition device.

When the mobile terminal 100 is first used, the hard screen 12 is first placed in the hollow area 11c of the flexible screen 11. The fingerprint recognition module 2 is then heat-pressed onto the back of the hard screen 12, so that the fingerprint recognition module 2 is accommodated in the mobile terminal 100. The user can perform a fingerprint recognition operation by pressing the hard screen 12. When the fingerprint recognition operation is not in progress, the hard screen 12 can display together with the flexible screen 11.

The display screen 1 provided by the present invention is formed by setting a hard screen 12 in the hollow area 11c of the flexible screen 11, and the hard screen 12 is set in the hollow area 11c of the flexible screen 11, and the flexible screen 11 and the hard screen 12 are spliced together to form the display screen 1, so that the display screen 1 can not only be bent, but also the location where the hard screen 12 is set increases the rigidity of the display screen 1 to a certain extent, which facilitates the application of the display screen 1 to various devices and facilitates the mounting of various components such as fingerprint recognition modules, thereby improving the reliability of the display screen 1.

The display device 1 and mobile terminal 100 provided by the present invention use the above-mentioned display screen 1. Since the display screen 1 is provided with a hard screen 12, the fingerprint recognition module can be better mounted on the hard screen 12, thereby improving the reliability of the display device 1 and the mobile terminal 100.

The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims (10)

1. A splicing screen, characterized in that it comprises a flexible screen, a rigid screen, and a flexible circuit board, wherein the flexible screen has a hollow area, the rigid screen is disposed in the hollow area, the rigid screen is used for hot pressing with a fingerprint recognition module, and signals on the rigid screen are bound to the flexible circuit board, and signals on the flexible circuit board are bound to the flexible screen. 2. The splicing screen according to claim 1, wherein the flexible screen has a display area for displaying images, and the hollowed-out area is located inside the display area. 3. The splicing screen according to claim 2, wherein the splicing screen further includes a glass cover plate, the glass cover plate being stacked on the side of the splicing screen where the image is displayed. 4. The splicing screen according to claim 2, wherein the splicing screen further includes a first cover plate and a second cover plate, the first cover plate being stacked on the side of the flexible screen displaying an image, the second cover plate being stacked on the side of the rigid screen displaying an image, and the sidewall of the second cover plate being adhered to the sidewall of the first cover plate. 5. The splicing screen according to claim 4, wherein the first cover plate is a flexibly bent plastic cover plate, and the second cover plate is a glass cover plate. 6. The splicing screen according to any one of claims 1-5, wherein the display layer of the flexible screen is an organic light-emitting diode display layer. 7. A display device, characterized in that it includes a fingerprint recognition module and a splicing screen as described in any one of claims 1 to 6, wherein the fingerprint recognition module is disposed on the hard screen. 8. The display device according to claim 7, wherein the hard screen has a non-display surface, and the fingerprint recognition module is hot-pressed onto the non-display surface. 9. The display device according to claim 8, wherein the fingerprint recognition module is an optical fingerprint recognition device; or, The fingerprint recognition module is an infrared fingerprint recognition device. 10. A mobile terminal, characterized in that it includes a display device as described in any one of claims 7 to 9.