Display panel, manufacturing method thereof and display device

Abstract

The present disclosure relates to a display panel, comprising a first display area and a second display area, the light transmittance of the first display area being greater than that of the second display area; the display panel further comprises: a polarizer, a notch area corresponding to the position of the first display area is provided on the first edge of the polarizer; a first filling structure is provided along the edge of the notch area; a second filling structure is filled inside the first filling structure; an adhesive layer is provided on the first filling structure, the second filling structure and the polarizer. According to the embodiments of the present disclosure, there is no gap between the first filling structure and the sidewall of the notch area, and even if there is a gap between the second filling structure and the first filling area, the air in the gap can be quickly and effectively extracted in the defoaming process.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display panel, a display device and a manufacturing method of the display panel. BACKGROUND

[0002] With the increasing demand of users for mobile phone display effect, mobile phone manufacturers continue to increase the proportion of screen area on the front of the mobile phone to meet the needs of users.

[0003] However, due to the existence of the front camera, in order to set the front camera on the front of the mobile phone, it is inevitable to affect the proportion of screen area on the front of the mobile phone. SUMMARY

[0004] The present disclosure provides a display panel, a display device and a manufacturing method of the display panel to solve the problems in the related art.

[0005] According to a first aspect of an embodiment of the present disclosure, a display panel is provided, comprising a first display area and a second display area, the light transmittance of the first display area being greater than that of the second display area;

[0006] The display panel further comprises:

[0007] a polarizer, a notch area corresponding to the position of the first display area being provided on a first edge of the polarizer;

[0008] a first filling structure provided along the edge of the notch area;

[0009] a second filling structure filled in the first filling structure;

[0010] a bonding layer provided on the first filling structure, the second filling structure and the polarizer.

[0011] Optionally, the flowability of the material of the first filling structure is lower than that of the material of the second filling structure.

[0012] Optionally, the thickness of the first filling structure and the thickness of the second filling structure are equal to the thickness of the polarizer.

[0013] Optionally, the second filling structure and the bonding layer are an integral structure.

[0014] Optionally, the material of the first filling structure and the second filling structure comprises at least one of the following:

[0015] OCA glue, water glue, tetrafluoroethylene.

[0016] Optionally, the refractive index of the first filling structure is equal to the refractive index of the second filling structure.

[0017] Optionally, the first filling structure has a refractive index equal to that of the polarizer.

[0018] According to a second aspect of the embodiments of the present disclosure, a display device is provided, comprising the display panel of any of the above embodiments, and further comprising:

[0019] An image acquisition device is arranged below the first display area.

[0020] According to a third aspect of the embodiments of the present disclosure, a manufacturing method of a display panel is provided, comprising:

[0021] A notch area is arranged on a first edge of the polarizer;

[0022] The polarizer is attached to the display panel, wherein the display panel comprises a first display area and a second display area, the first display area has a higher light transmittance than the second display area, and the notch area is arranged at a position corresponding to the first display area;

[0023] A first filling layer is arranged along the edge of the notch area;

[0024] A second filling structure is filled in the first filling structure;

[0025] A bonding layer is arranged on the first filling structure, the second filling structure and the polarizer.

[0026] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0027] As can be seen from the above embodiments, by arranging a notch area on the polarizer at a position corresponding to the first display area, the position corresponding to the through hole in the first display area can have a higher light transmittance, and thus when an image acquisition device is arranged below the first display area, the image acquisition device can be arranged below the through hole to ensure the effect of the image acquisition device collecting images on the front of the display panel through the through hole.

[0028] Further, the first filling structure is arranged along the edge of the notch area, so that the first filling structure can be completely attached to the side wall of the notch area without any gap.

[0029] Further, the second filling structure is filled in the first filling structure, in this case, even if there is a gap between the second filling structure and the first filling region, since the first filling region forms a closed space in the plane where the polarizing sheet is located, the second filling structure inside the first filling region does not communicate with the space outside the first filling region in the plane where the polarizing sheet is located, the air in the gap is limited, when the air in the gap is extracted through the defoaming process, the air in the external environment cannot enter the gap, and the air in the gap can be quickly and effectively extracted to eliminate or reduce the gap.

[0030] According to the embodiments of the present disclosure, the first filling structure is completely fitted with the side wall of the notch region without a gap, and even if there is a gap between the second filling structure and the first filling region, the air in the gap can be quickly and effectively extracted in the defoaming process, thereby avoiding the influence of the gap on the light path of the light emitted by the display panel and the light path of the light incident on the display panel, thereby ensuring the better display effect of the first display region and the good image acquisition effect of the image acquisition device arranged below the first display region.

[0031] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are incorporated into the specification and constitute part of it, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0033] Figure 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

[0034] Figure 2 is a cross-sectional schematic view of a display panel in the related art along LL'.

[0035] Figure 3 is Figure 1 is a partial enlarged view of the display panel shown.

[0036] Figure 4 is Figure 3 is a cross-sectional schematic view of the display panel shown along LL'.

[0037] Figure 5 is a schematic flow chart of a manufacturing method of a display panel according to an embodiment of the present disclosure.

[0038] Figure 6 is a schematic view of filling a second filling structure in a first filling structure according to an embodiment of the present disclosure.

[0039] Figure 7is a schematic block diagram of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The exemplary embodiments will be described in detail hereinbelow with reference to the drawings. In the following description, the same numbers refer to the same or similar elements throughout the drawings. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they only represent examples of apparatuses and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0041] Figure 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure. The display panel in the embodiments of the present disclosure can be arranged in an electronic device with display function, such as a mobile phone, a tablet computer, a personal computer, etc.

[0042] As shown in Figure 1 , the display panel includes a first display area A and a second display area B, the light transmittance of the first display area is greater than that of the second display area, for example, the first display area can be an organic light-emitting diode (OLED) display panel. Based on this structure, an image acquisition device (for example, which can be used as a front camera of a mobile phone) can be arranged on one side of the first display area (for example, below the first display area). The image acquisition device can acquire images on the front of the display panel through the display panel. Accordingly, it is not necessary to arrange the image acquisition device on the front of the display panel, which is beneficial to improve the area ratio of the effective display area of the display panel. For example, when the display panel is arranged in a mobile phone, the screen ratio of the mobile phone can be effectively improved.

[0043] The first display area is not limited to one area, nor is it limited to one type of area. The second display area is not limited to one area, nor is it limited to one type of area.

[0044] Figure 2 is a schematic diagram of a cross section of a display panel in the related art along LL’.

[0045] As shown in Figure 2 , in the related art, a polarizing sheet can be arranged on a display substrate. In order to make the first display area have a higher light transmittance, the part of the polarizing sheet corresponding to the first display area needs to be removed to form a gap area, and then a bonding agent is coated on the polarizing sheet to bond a cover glass (CG).

[0046] However, when the adhesive is coated on the polarizer, part of the adhesive is not coated vertically on the polarizer, which leads to that the adhesive does not completely contact the sidewall of the notch area of the polarizer, thereby causing a gap between the adhesive and the sidewall of the notch area in the notch area.

[0047] Since the refractive index of the gap is greatly different from the refractive index of the adhesive and the polarizer, it will affect the light path of the light emitted by the display panel, thereby affecting the display effect; it will also affect the light path of the light incident on the display panel, thereby affecting the image acquisition device to have a good effect of acquiring images. Therefore, the air in the gap needs to be extracted through a defoaming process to eliminate or reduce the gap.

[0048] The shape of the notch area and the first display area in the related art can be the same, for example, U-shaped, and the notch area is connected to the external environment of the polarizer, and there is also air in the external environment. When the air in the gap is extracted through the defoaming process, the air in the external environment will enter the gap, which will seriously affect the efficiency of the defoaming process.

[0049] Figure 3 is Figure 1 a partial enlarged view of the display panel shown in Figure 4 is Figure 3 a cross-sectional view of the display panel shown in along LL'. Figure 3 and Figure 4 The display panel further comprises:

[0050] a polarizer 1, which is provided with a notch area 10 corresponding to the position of the first display area on a first edge of the polarizer;

[0051] a first filling structure 2 provided along the edge of the notch area 10;

[0052] a second filling structure 3 filled in the first filling structure 2;

[0053] an adhesive layer 4 provided on the first filling structure 2, the second filling structure 3 and the polarizer 1.

[0054] In an embodiment, as shown in Figure 4 The display panel can further comprise a display substrate 5, which can comprise an organic light-emitting diode, a transistor for driving the organic light-emitting diode to emit light, and the like. A cover glass 6 can be provided on the adhesive layer 2, and the cover glass 6 is bonded to the polarizer 1 through the adhesive layer 2.

[0055] It should be noted that the shape of the through hole is not limited to Figure 3 the circular shape shown in the figure, and can be set to other shapes as needed, such as a rectangular shape, an oval shape, etc.

[0056] In one embodiment, by setting a notch area on the polarizer corresponding to the first display area (for example Figure 3 As shown, the first display area A and the notch area 10 coincide), the position corresponding to the through hole in the first display area can have a higher light transmittance, and when the image acquisition device is arranged below the first display area, the image acquisition device can be arranged below the through hole to ensure the effect of the image acquisition device acquiring the image on the front of the display panel through the through hole.

[0057] Further, the first filling structure is arranged along the edge of the notch area, and since the first filling structure is arranged along the edge of the notch area, the first filling structure can be completely fitted with the side wall of the notch area without a gap.

[0058] Further, the second filling structure is filled in the first filling structure, and in this case, even if there is a gap between the second filling structure and the first filling area, since the first filling area forms a closed space in the plane where the polarizer is located, the second filling structure inside the first filling area is not in communication with the space outside the first filling area in the plane where the polarizer is located, and the air in the gap is limited. When the air in the gap is extracted through the defoaming process, the air in the external environment will not enter the gap, and the air in the gap can be quickly and effectively extracted to eliminate or reduce the gap.

[0059] According to the embodiments of the present disclosure, the first filling structure is completely fitted with the side wall of the notch area without a gap, and even if there is a gap between the second filling structure and the first filling area, the air in the gap can be quickly and effectively extracted in the defoaming process, and the gap can affect the light path of the light emitted by the display panel and the light path of the light incident on the display panel, thereby ensuring the better display effect of the first display area and the better image acquisition effect of the image acquisition device arranged below the first display area.

[0060] Optionally, the flowability of the material of the first filling structure is lower than the flowability of the material of the second filling structure.

[0061] In one embodiment, a material with lower flowability can be selected as the first filling structure, and accordingly, when the first filling structure is arranged along the edge of the notch area, the shape of the first filling structure can be fixed, and when the second filling structure is filled in the first filling structure, the shape of the first filling structure is not easily damaged. The material with higher flowability can be selected as the second filling structure, which can ensure that the second filling structure can quickly fill the inside of the first filling structure and minimize the gap between the second filling structure and the first filling structure.

[0062] Optionally, the thickness of the first filling structure and the thickness of the second filling structure are equal to the thickness of the polarizer.

[0063] In an embodiment, the thickness of the first filling structure and the thickness of the second filling structure are set to be equal to the thickness of the polarizer, which can ensure that the upper surfaces of the first filling structure, the second filling structure and the polarizer form a relatively flat plane, thereby facilitating the formation of a flat surface of the adhesive layer.

[0064] Optionally, the second filling structure and the adhesive layer are an integral structure.

[0065] In an embodiment, when the second filling structure and the adhesive layer are an integral structure, the second filling structure and the adhesive layer can be formed by a one-step process using the same material, which can simplify the process and ensure that the refractive indices of the second filling structure and the adhesive layer are the same, thereby avoiding refraction of light when the light passes through the contact surface between the adhesive layer and the second filling structure, avoiding changes in the light path when the light passes through the first display area, and facilitating the display of the first display area and the image acquisition device arranged below the first display area to have a good image acquisition effect.

[0066] Optionally, the material of the first filling structure and the second filling structure comprises at least one of the following:

[0067] OCA glue, water glue, tetrafluoroethylene.

[0068] In an embodiment, the material of the adhesive can be selected as needed, and a material with a relatively high light transmittance, such as a light transmittance greater than 90%, can be selected as the adhesive, so that as much light as possible can pass through the through hole into the image acquisition device below the through hole, thereby achieving a better image acquisition effect of the image acquisition device.

[0069] Optionally, the refractive index of the first filling structure is equal to the refractive index of the second filling structure.

[0070] In an embodiment, the first filling structure and the second filling structure are made of materials with the same refractive index, which can avoid refraction of light when the light passes through the contact surface between the first filling structure and the second filling structure, thereby avoiding changes in the light path when the light passes through the first display area, and facilitating the display of the first display area and the image acquisition device arranged below the first display area to have a good image acquisition effect.

[0071] Optionally, the refractive index of the first filling structure is equal to the refractive index of the polarizer.

[0072] In one embodiment, the material with the same refractive index is selected to manufacture the first filling structure and the polarizer, so that the refraction of light can be avoided when the light passes through the contact surface between the first filling structure and the polarizer, the light path is changed when the light passes through the first display area, and the first display area has a better display effect and the image acquisition device arranged below the first display area has a good image acquisition effect.

[0073] The display device according to any one of the embodiments of the display panel is also provided.

[0074] The image acquisition device is arranged below the first display area.

[0075] In one embodiment, since the light transmittance of the first display area is greater than that of the second display area, a large amount of light can pass through the first display area into the image acquisition device, so that the image acquisition device can acquire a clear image, and the image acquisition device has a good image acquisition effect.

[0076] In one embodiment, for example, the display device is a screen in a mobile phone, and the image acquisition device can be used as a front camera of the mobile phone. The image acquisition device can acquire an image on the front of the display panel through the display panel. Therefore, the image acquisition device does not need to be arranged on the front of the display panel, and the screen ratio of the mobile phone is improved.

[0077] Figure 5 is a schematic flow chart of a manufacturing method of a display panel according to an embodiment of the present disclosure. As shown in Figure 5 The manufacturing method of the display panel according to an embodiment of the present disclosure includes the following steps.

[0078] In step S1, a notch area is arranged on the first edge of the polarizer.

[0079] In step S2, the polarizer is attached to the display panel, wherein the display panel includes 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 notch area corresponds to the first display area.

[0080] In step S3, a first filling layer is arranged along the edge of the notch area.

[0081] In step S4, a second filling structure is filled in the first filling structure.

[0082] In step S5, a bonding layer is pressed and bonded on the first filling structure, the second filling structure and the polarizer.

[0083] Figure 6is a schematic diagram illustrating a second filling structure being filled inside a first filling structure according to an embodiment of the present disclosure.

[0084] In one embodiment, as shown in Figure 6 a second filling structure can be arranged only at partial positions inside the first filling structure, for example Figure 6 a circle located inside the first filling structure 2 in

[0085] Figure 7 is a schematic block diagram of an electronic device 700 according to an embodiment of the present disclosure. The device 700 can be a mobile phone, a computer, a digital broadcasting terminal, a message receiving device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, etc.

[0086] Referring to Figure 7 , the device 700 can include one or more of the following components: a processing component 702, a memory 704, a power supply 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.

[0087] The processing component 702 usually controls overall operations of the device 700, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 702 can include one or more processors 720 to execute instructions. Moreover, the processing component 702 can include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate the interaction between the multimedia component 708 and the processing component 702.

[0088] The memory 704 is configured to store various types of data to support operations of the device 700. Examples of these data include instructions for any application or method operating on the device 700, contact data, phonebook data, messages, pictures, videos, etc. The memory 704 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, 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 storage, flash memory, magnetic disk or optical disk.

[0089] Power component 706 provides power to the various components of the device 700. The power component 706 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 700.

[0090] The multimedia component 708 includes a screen providing an output interface between the device 700 and a user. In some embodiments, the screen includes a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touch or swiping action, but also detect duration and pressure associated with the touch or swiping action. In some embodiments, the multimedia component 708 includes a front camera and / or a rear camera. When the device 700 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0091] The audio component 710 is configured to output and / or input audio signals. For example, the audio component 710 includes a microphone (MIC) that is configured to receive an external audio signal when the device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting audio signals.

[0092] The I / O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which can be a keyboard, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0093] The sensor component 714 includes one or more sensors for providing status assessments for various aspects of the device 700. For example, the sensor component 714 can detect an open / closed position of the device 700, relative positioning of components, such as a display and keypad of the device 700, changes in position of the device 700 or a component of the device 700, presence or absence of user contact with the device 700, changes in orientation of the device 700 or acceleration / deceleration, and temperature changes of the device 700. The sensor component 714 can include proximity sensor(s) configured to detect presence of nearby objects without any physical contact. The sensor component 714 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 714 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0094] The communication component 716 is configured to facilitate wired or wireless communication between the device 700 and other devices. The device 700 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In an example embodiment, the communication component 716 receives broadcast signals or broadcast-related information from external broadcast management systems via a broadcast channel. In an example embodiment, the communication component 716 can further include a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, ultra-wideband (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0095] In an example embodiment, the device 700 can be implemented using one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements.

[0096] In an example embodiment, a non-transitory computer-readable storage medium, such as the memory 704 including instructions, is also provided, which can be executed by the processor 720 of the device 700 to implement the above-described method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0097] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. 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.

[0098] It should be understood that the present disclosure is not limited to the precise structures as herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A display panel, characterized by, The display panel comprises a first display area and a second display area, the first display area has a higher light transmittance than the second display area; The display panel further comprises: A polarizer, a notch area is arranged on a first edge of the polarizer, the notch area corresponds to a position of the first display area; A first filling structure is arranged along an edge of the notch area, the first filling structure forms a closed space in a plane where the polarizer is located; A second filling structure is filled in the first filling structure, the second filling structure does not communicate with a space outside the first filling area in the plane where the polarizer is located, and a refractive index of the first filling structure is equal to a refractive index of the second filling structure; An adhesive layer is arranged on the first filling structure, the second filling structure and the polarizer.

2. The display panel of claim 1, wherein, The first filling structure has a lower flowability than the second filling structure.

3. The display panel of claim 1, wherein, The first filling structure and the second filling structure have a thickness equal to a thickness of the polarizer.

4. The display panel of claim 1, wherein, The second filling structure and the adhesive layer are an integral structure.

5. The display panel of any one of claims 1 to 4, wherein, The material of the first filling structure and the second filling structure comprises at least one of the following: OCA glue, water glue, tetrafluoroethylene.

6. The display panel of any one of claims 1 to 4, wherein, The first filling structure has a refractive index equal to a refractive index of the polarizer.

7. A display device, characterized by comprising: The display panel comprises a first display area and a second display area, the first display area has a higher light transmittance than the second display area; An image acquisition device is arranged below the first display area.

8. A manufacturing method of a display panel, comprising: The display panel comprises a first display area and a second display area, the first display area has a higher light transmittance than the second display area; A notch area is arranged on a first edge of the polarizer, the notch area corresponds to a position of the first display area; The display panel further comprises: A first filling structure is arranged along an edge of the notch area, the first filling structure forms a closed space in a plane where the polarizer is located; A second filling structure is filled in the first filling structure, the second filling structure does not communicate with a space outside the first filling area in the plane where the polarizer is located, and a refractive index of the first filling structure is equal to a refractive index of the second filling structure; An adhesive layer is arranged on the first filling structure, the second filling structure and the polarizer.

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