CN111508337A

CN111508337A - Display panel, manufacturing method thereof and display device

Info

Publication number: CN111508337A
Application number: CN201910100750.9A
Authority: CN
Inventors: 高静; 张林涛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-08-07

Abstract

The disclosure relates to a display panel, which includes a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area; the display panel further includes: a polarizer, on which a missing region is provided at a position corresponding to the first display region; a filling layer, having the same shape and the same area as the missing region, filling in the missing region; and the bonding layer is arranged on the filling layer and the polarizer. According to the embodiment of the disclosure, the filling layer with the same shape and area as the missing region is filled in the missing region, so that the filling layer and the side wall of the missing region are completely attached without a gap, and therefore, defoaming treatment is not needed, the process of defoaming treatment is omitted, and the gap can be avoided.

Description

Display panel, manufacturing method thereof and display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display device, and a method for manufacturing the display panel.

Background

With the improvement of the requirement of the user on the display effect of the mobile phone, mobile phone manufacturers continuously improve the area proportion of the screen on the front side of the mobile phone to meet the requirements of the user.

However, due to the existence of the front camera, in order to arrange the front camera on the front face of the mobile phone, the area ratio of the screen on the front face of the mobile phone is inevitably influenced.

Disclosure of Invention

The present disclosure provides a display panel, a display device and a method for manufacturing the display panel to solve the disadvantages of the related art.

According to a first aspect of the embodiments of the present disclosure, a display panel is provided, which includes a first display area and a second display area, wherein a light transmittance of the first display area is greater than a light transmittance of the second display area;

the display panel further includes:

a polarizer, on which a missing region is provided at a position corresponding to the first display region;

a filling layer, having the same shape and the same area as the missing region, filling in the missing region;

and the bonding layer is arranged on the filling layer and the polarizer.

Optionally, the missing region is a through hole located inside the polarizer.

Optionally, the minimum distance between the through hole and the first edge of the polarizer is greater than or equal to a first preset distance.

Optionally, the first preset distance is equal to 1 mm.

Optionally, the material of the filling layer is the same as the material of the bonding layer.

Optionally, the material of the bonding layer comprises at least one of:

OCA glue, water glue and tetrafluoroethylene.

Optionally, the refractive index of the filling layer is equal to that of the polarizer.

According to a second aspect of the embodiments of the present disclosure, a display device is provided, which includes the display panel of any of the embodiments, and further includes:

and the image acquisition equipment is arranged below the first display area.

Optionally, the missing region is a through hole located inside the polarizer, the through hole corresponds to the image acquisition device in position, and the through hole and the image acquisition device have the same field angle shape and the same area.

According to a third aspect of the embodiments of the present disclosure, a method for manufacturing a display panel is provided, including:

setting a deletion area on the polarizer;

attaching the polarizer to a display panel, wherein the display panel comprises a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, and the position of the missing area corresponds to the first display area;

filling a filling layer in the missing region, wherein the filling layer is the same as the missing region in shape and equal to the missing region in area;

and arranging adhesive layers on the polarizer and the filling layer.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the missing area is arranged at the position, corresponding to the first display area, of the polarizer, so that the position, corresponding to the through hole, of the first display area has higher light transmittance, and when the image acquisition equipment is arranged below the first display area, the image acquisition equipment can be arranged below the through hole, and the effect that the image acquisition equipment acquires the front image of the display panel through the through hole is guaranteed.

And then the filling shape is the same with the disappearance region in the disappearance region, and the filling layer that the area is equal with the disappearance region, can make and laminate completely between the lateral wall of filling layer and disappearance region and do not have the clearance, thereby just need not to carry out the deaeration and handle, this one step of technology of deaeration processing has not only been saved, can also avoid the appearance in clearance, and then avoid the clearance to influence the light path of display panel outgoing light and the light path of the light of penetrating into display panel, thereby guarantee that the display effect of first display region preferred and the image acquisition equipment of setting in first display region below have the effect of good collection image.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram illustrating a display panel according to an embodiment of the present disclosure.

Fig. 2 is a schematic cross-sectional view of a related art display panel along line LL'.

Fig. 3 is a partially enlarged view of the display panel shown in fig. 1.

Fig. 4 is a schematic cross-sectional view LL' of the display panel shown in fig. 3.

Fig. 5 is a partially enlarged view of another display panel shown according to an embodiment of the present disclosure.

Fig. 6 is a schematic flow chart illustrating a method of fabricating a display panel according to an embodiment of the present disclosure.

Fig. 7 is a schematic block diagram illustrating an electronic device in accordance with an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a schematic structural diagram illustrating a display panel according to an embodiment of the present disclosure. The display panel in the embodiment of the present disclosure may be provided in an electronic device having a display function, such as a mobile phone, a tablet computer, a personal computer, and the like.

As shown in fig. 1, the display panel includes a first display area a and a second display area B, where a light transmittance of the first display area is greater than a light transmittance of the second display area, for example, the first display area may be an Organic light-Emitting Diode (O L ED) display panel, and based on this structure, an image capture device (for example, a front camera that can be used as a mobile phone) may be disposed on one side of the first display area (for example, below the first display area), and the image capture device may capture an image of the front side of the display panel through the display panel.

Wherein the first display area is not limited to one area nor one type of area. The second display area is not limited to one area nor to a class of areas.

As shown in fig. 2, in the related art, a polarizer may be disposed on a display substrate, and in order to make the first display region have high light transmittance, a portion of the polarizer corresponding to the first display region is removed to form a missing region, and then an adhesive is applied to the polarizer to adhere Cover Glass (CG).

However, when the adhesive is applied to the polarizer, a portion of the adhesive is not vertically applied to the polarizer, which results in the adhesive not completely contacting the sidewalls of the missing region of the polarizer, thereby causing a gap between the adhesive and the sidewalls of the missing region in the missing region.

The refractive index of the gap is greatly different from the refractive indexes of the adhesive and the polaroid, so that the light path of emergent rays of the display panel is influenced, and the display effect is further influenced; the light path of the light rays entering the display panel can be influenced, and the image acquisition equipment is further influenced to have a good image acquisition effect. Therefore, it is necessary to remove or reduce the gap by extracting air in the gap through a defoaming process.

The missing region in the related art may have the same shape as the first display region, for example, a U-shape, and the missing region is connected to the external environment of the polarizer, and air also exists in the external environment, and when the air in the gap is pumped out through the defoaming process, the air in the external environment may enter the gap, which seriously affects the efficiency of the defoaming process.

Fig. 3 is a partially enlarged view of the display panel shown in fig. 1, fig. 4 is a schematic sectional view of the display panel shown in fig. 3 taken along line LL', and as shown in fig. 3 and 4, the display panel further includes:

a polarizer 1, on which a deletion area 10 is provided at a position corresponding to the first display area a;

a filling layer 2 having the same shape as the missing region 10 and the same area as the missing region 10, and filling the missing region 10; wherein, the thickness of the filling layer can be equal to that of the polarizer;

and the bonding layer 3 is arranged on the filling layer 2 and the polarizer 1.

In one embodiment, as shown in fig. 4, the display panel may further include a display substrate 5, and the display substrate 5 may include an organic light emitting diode, a transistor for driving the organic light emitting diode to emit light, and the like. Cover glass 4 can be arranged on the bonding layer 2, and the cover glass 4 is bonded on the polarizer 1 through the bonding layer 2.

It should be noted that the shape of the through hole is not limited to the circular shape shown in fig. 3, and may be provided in other shapes such as a rectangular shape, an oval shape, and the like as needed.

In one embodiment, a position corresponding to the through hole in the first display region can have a higher light transmittance by providing a missing region (for example, as shown in fig. 3, the first display region a and the missing region 10 coincide) on the polarizer at a position corresponding to the first display region, and when the image capture device is disposed below the first display region, the image capture device can be disposed below the through hole to ensure an effect that the image capture device captures an image on the front surface of the display panel through the through hole.

Alternatively, as shown in fig. 5, the missing region 10 is a through hole located inside the polarizer.

In one embodiment, by providing the missing area 10 as a through hole located inside the polarizer, since the through hole is not connected to the external environment of the polarizer on the plane where the polarizer is located, when the filling layer is provided in the missing area, it is beneficial to prevent the material of the filling layer from overflowing from the missing area to the external environment of the polarizer.

Note that, the missing region in the form of a through hole may be located inside the first display region a as illustrated in fig. 5. And in the case that the image acquisition device is arranged below the first display area, the through hole is positioned corresponding to the image acquisition device, and the through hole and the image acquisition device have the same field angle shape and the same area.

In view of the above, can confirm image acquisition equipment's angle of view at the planar shape and the area that the polaroid is located earlier, and set up the through-hole on the polaroid according to this shape and area, make the through-hole the same with image acquisition equipment's angle of view shape, the area equals, thereby can excise the polaroid as few as possible, reduce the damage to the polaroid, can guarantee again that the polaroid can not lead to the fact to shelter from to image acquisition equipment's angle of view, make image acquisition equipment can gather clear image, be favorable to guaranteeing that image acquisition equipment has the effect of good collection image.

In one embodiment, since the through-hole is formed through an area in the polarizer, which relates to a process of cutting the polarizer from the inside of the polarizer, if it is closer to the first edge of the polarizer, it may cause the polarizer to be broken during the cutting process, and thus the through-hole may be formed by performing the cutting process at a position having a minimum distance from the first edge greater than or equal to a first predetermined distance, so as to prevent the polarizer from being broken during the cutting process.

Optionally, the first preset distance is equal to 1 mm.

In one embodiment, the first predetermined distance may be equal to 1 mm, or may be set as needed, for example, the material of the polarizer is not easily broken, the first predetermined distance may be set to be smaller, for example, the polarizer is easily broken, and the first predetermined distance may be set to be larger.

In one embodiment, the same material is used as the filling layer and the bonding layer, so that the same refractive indexes of the filling layer and the bonding layer can be ensured, refraction when light passes through the missing region can be avoided, that is, the light path can be prevented from being changed when the light passes through the missing region, and the better display effect of the first display region and the good image collecting effect of the image collecting device arranged below the first display region can be ensured.

Optionally, the material of the bonding layer comprises at least one of:

OCA glue, water glue and tetrafluoroethylene.

In an embodiment, the material of the adhesive can be selected as required, and a material with relatively high light transmittance can be selected as the adhesive, for example, the light transmittance is greater than 90%, so as to ensure that light can enter the image acquisition device below the through hole through the through hole as much as possible, and achieve a better image acquisition effect of the image acquisition device.

The material that can select the refracting index equal with the polaroid is as the filling layer, according to this, can guarantee that the refracting index of every position of plane that the polaroid is located is the same, when avoiding light to pass the polaroid in first display area, take place to refract in polaroid and filling layer juncture position to avoid light to change when passing first display area, be favorable to guaranteeing that the display effect of first display area preferred and the image acquisition equipment that sets up in first display area below have good collection image's effect.

An embodiment of the present disclosure further provides a display device, including the display panel according to any one of the above embodiments, further including:

and the image acquisition equipment is arranged below the first display area.

In one embodiment, because the light transmittance of the first display area is greater than that of the second display area, a large amount of light can penetrate through the first display area to enter the image acquisition equipment, so that the image acquisition equipment can acquire clear images, and the image acquisition equipment is favorably ensured to have a good image acquisition effect.

In one embodiment, for example, the display device is a screen in a mobile phone, the image capture device may be a front camera of the mobile phone, and the image capture device may capture an image of the front side of the display panel through the display panel.

In an embodiment, in the case that the missing region is a through hole located inside the polarizer, the shape and the area of the field angle of the image acquisition device on the plane where the polarizer is located may be determined first, and the through hole is disposed on the polarizer according to the shape and the area, so that the shape of the field angle of the through hole is the same as that of the field angle of the image acquisition device, and the areas are equal, thereby the polarizer may be cut off as little as possible, damage to the polarizer is reduced, it is ensured that the field angle of the image acquisition device is not blocked by the polarizer, the image acquisition device is enabled to acquire clear images, and it is beneficial to ensuring that the image acquisition device has a good image acquisition effect.

As shown in fig. 6, an embodiment of the present disclosure provides a method for manufacturing a display panel, including:

in step S1, a missing region is set on the polarizer;

in step S2, attaching the polarizer to a display panel, wherein the display panel includes a first display region and a second display region, the light transmittance of the first display region is greater than that of the second display region, and the position of the missing region corresponds to the first display region;

in step S3, filling a filling layer in the missing region, wherein the filling layer has the same shape and the same area as the missing region;

in step S4, an adhesive layer is provided on the polarizer and on the filling layer.

Fig. 7 is a schematic block diagram illustrating an electronic device 700 in accordance with an embodiment of the disclosure. For example, the apparatus 700 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 7, apparatus 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.

The processing component 702 generally controls overall operation of the device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 702 may include one or more processors 720 to execute instructions. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operations at the apparatus 700. Examples of such data include instructions for any application or method operating on device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 706 provides power to the various components of the device 700. The power components 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 700.

The multimedia component 708 includes a screen that provides an output interface between the device 700 and a user, in some embodiments, the screen may include a liquid crystal display (L CD) and a Touch Panel (TP). if the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.

The audio component 710 is configured to output and/or input audio signals. For example, audio component 710 includes a Microphone (MIC) configured to receive external audio signals when apparatus 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 714 includes one or more sensors for providing status assessment of various aspects of the apparatus 700. For example, sensor assembly 714 may detect an open/closed state of device 700, the relative positioning of components, such as a display and keypad of device 700, sensor assembly 714 may also detect a change in position of device 700 or a component of device 700, the presence or absence of user contact with device 700, orientation or acceleration/deceleration of device 700, and a change in temperature of device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The apparatus 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G L TE, 5G NR, or a combination thereof, in one exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short range communication.

In an example embodiment, the apparatus 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (P L D), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 720 of the device 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The display panel is characterized by comprising a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area;

the display panel further includes:

and the bonding layer is arranged on the filling layer and the polarizer.

2. The display panel according to claim 1, wherein the missing region is a through hole located inside the polarizer.

3. The display panel of claim 2, wherein the minimum distance between the through hole and the first edge of the polarizer is greater than or equal to a first predetermined distance.

4. The display panel according to claim 3, wherein the first predetermined distance is equal to 1 mm.

5. The display panel according to claim 1, wherein a material of the filling layer is the same as a material of the adhesive layer.

6. The display panel according to any of claims 1 to 5, wherein the material of the bonding layer comprises at least one of:

OCA glue, water glue and tetrafluoroethylene.

7. The display panel according to any one of claims 1 to 5, wherein the refractive index of the filling layer is equal to the refractive index of the polarizer.

8. A display device characterized by comprising the display panel according to any one of claims 1 to 7, and further comprising:

and the image acquisition equipment is arranged below the first display area.

9. The display device according to claim 8, wherein the missing region is a through hole located inside the polarizer, the through hole is located corresponding to the image capturing device, and the through hole and the image capturing device have the same field angle shape and the same area.

10. A method for manufacturing a display panel is characterized by comprising the following steps:

setting a deletion area on the polarizer;

and arranging adhesive layers on the polarizer and the filling layer.