DISPLAY MODULE, DISPLAY APPARATUS AND METHOD FOR MANUFACTURING THE SAME

A display module has a functional device arrangement region and a main display region; the functional device arrangement region is provided with a mounting hole therein, and the functional device arrangement region includes a reserved region; a side wall of the mounting hole is of one of a step-shaped structure and a protrusion-depression structure. The display module includes a display panel, a first light-shielding pattern disposed on a light-exit side of the display panel, an adhesive layer disposed on a side of the first light-shielding pattern away from the display panel and a second light-shielding pattern covering at least the side wall of the mounting hole; an orthogonal projection of the first light-shielding pattern on the display panel substantially coincides with the reserved region of the display panel; the mounting hole penetrates the display panel, the first light-shielding pattern and the adhesive layer.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and in particular, to a display module, a display apparatus and a method for manufacturing the same.

BACKGROUND

With the rapid development of display technologies, display apparatuses have spread throughout people's life. Electroluminescent display apparatuses have been widely used in smart products such as mobile phones, televisions and notebook computers and so on due to their advantages of self-luminescence, low power consumption, wide viewing angle, fast response speed, high contrast and the like.

SUMMARY

In an aspect, a display module is provided. The display module has a functional device arrangement region and a main display region surrounding the functional device arrangement region; wherein the functional device arrangement region is provided with a mounting hole therein, and the functional device arrangement region includes a reserved region surrounding the mounting hole; a side wall of the mounting hole is of one of a step-shaped structure and a protrusion-depression structure. The display module includes a display panel, a first light-shielding pattern, an adhesive layer and a second light-shielding pattern; the first light-shielding pattern is disposed on a light-exit side of the display panel, and an orthogonal projection of the first light-shielding pattern on the display panel substantially coincides with the reserved region of the display panel; the adhesive layer is disposed on a side of the first light-shielding pattern away from the display panel, and the mounting hole penetrates the display panel, the first light-shielding pattern and the adhesive layer; the second light-shielding pattern covers at least the side wall of the mounting hole.

In some embodiments, the display module further includes a circular polarizer. The circular polarizer is disposed between the display panel and the adhesive layer, and the first light-shielding pattern is located on a side of the circular polarizer proximate to the display panel, the mounting hole further penetrating the circular polarizer.

In some embodiments, the mounting hole includes a plurality of sub-holes, the plurality of sub-holes are arranged in a thickness direction of the display panel, and side walls of at least two adjacent sub-holes are not flush with each other.

In some embodiments, the mounting hole includes a first sub-hole, a second sub-hole and a third sub-hole. In a direction from the display panel to the adhesive layer, the first sub-hole, the second sub-hole and the third sub-hole are arranged in sequence.

A diameter of an end of the first sub-hole proximate to the second sub-hole is smaller than a diameter of an end of the second sub-hole proximate to the first sub-hole, and a side wall of the first sub-hole and a side wall of the second sub-hole provide a stepped structure; a diameter of an end of the second sub-hole proximate to the third sub-hole is smaller than a diameter of an end of the third sub-hole proximate to the second sub-hole, and the side wall of the second sub-hole and a side wall of the third sub-hole provide another stepped structure, the stepped structure and the another stepped structure constitute at least part of the step-shaped structure; alternatively, the diameter of the end of the second sub-hole proximate to the third sub-hole is equal to the diameter of the end of the third sub-hole proximate to the second sub-hole, and the side wall of the second sub-hole is flush with the side wall of the third sub-hole, the stepped structure and the side walls of the second sub-hole and the third sub-hole constitute at least part of the step-shaped structure; alternatively, the diameter of the end of the second sub-hole proximate to the third sub-hole is larger than the diameter of the end of the third sub-hole proximate to the second sub-hole, and the side wall of the third sub-hole protrudes relative to the side wall of the second sub-hole, the stepped structure and the side walls of the second sub-hole and the third sub-hole constitute at least part of the protrusion-depression structure.

In some embodiments, the second light-shielding pattern includes a first sub-pattern covering the side wall of the first sub-hole, a second sub-pattern covering the side wall of the second sub-hole, and a third sub-pattern covering the side wall of the third sub-hole; a border of the first sub-pattern proximate to the side wall of the first sub-hole is further close to an axis of the mounting hole relative to a border of the second sub-pattern proximate to the side wall of the second sub-hole; in a case where the diameter of the end of the second sub-hole proximate to the third sub-hole is smaller than the diameter of the end of the third sub-hole proximate to the second sub-hole, the border of the second sub-pattern proximate to the side wall of the second sub-hole is further close to the axis of the mounting hole relative to a border of the third sub-pattern proximate to the side wall of the third sub-hole; alternatively, in a case where the diameter of the end of the second sub-hole proximate to the third sub-hole is equal to the diameter of the end of the third sub-hole proximate to the second sub-hole, the border of the second sub-pattern proximate to the side wall of the second sub-hole is flush with the border of the third sub-pattern proximate to the side wall of the third sub-hole; alternatively, in a case where the diameter of the end of the second sub-hole proximate to the third sub-hole is larger than the diameter of the end of the third sub-hole proximate to the second sub-hole, the border of the second sub-pattern proximate to the side wall of the second sub-hole is further away from the axis of the mounting hole relative to the border of the third sub-pattern proximate to the side wall of the third sub-hole.

In some embodiments, the display module further includes a circular polarizer disposed between the display panel and the adhesive layer, the first light-shielding pattern being located on a side of the circular polarizer proximate to the display panel; the first sub-hole penetrates the display panel and the first light-shielding pattern, the second sub-hole penetrates the circular polarizer, and the third sub-hole penetrates the adhesive layer.

In some embodiments, the display module further includes a first protective layer, and the first protective layer is disposed on a side of the adhesive layer away from the display panel; the mounting hole further includes a fourth sub-hole penetrating the first protective layer; a diameter of an end of the fourth sub-hole proximate to the third sub-hole is larger than a diameter of an end of the third sub-hole proximate to the fourth sub-hole, and a side wall of the fourth sub-hole and the side wall of the third sub-hole provide another stepped structure.

In some embodiments, the second light-shielding pattern further includes a fourth sub-pattern, and the fourth sub-pattern covers at least a portion of a surface of the adhesive layer away from the display panel that exceeds the first protective layer. In some embodiments, the fourth sub-pattern and a portion, except the fourth sub-pattern, of the second light-shielding pattern that covers the side wall of the mounting hole are disposed as an integral structure.

In some embodiments, an orthogonal projection of the fourth sub-pattern on the display panel is located within the reserved region of the display panel, or substantially coincides with the reserved region of the display panel.

In some embodiments, the display module further includes a second protective layer, and the second protective layer is disposed on a side of the display panel away from the adhesive layer; the mounting hole further includes a fifth sub-hole penetrating the second protective layer; a diameter of an end of the fifth sub-hole proximate to the first sub-hole is equal to a diameter of an end of the first sub-hole proximate to the fifth sub-hole, and a side wall of the fifth sub-hole is flush with the side wall of the first sub-hole.

In some embodiments, the second light-shielding pattern further includes a fifth sub-pattern covering the side wall of the fifth sub-hole.

In some embodiments, a surface of the second light-shielding pattern proximate to an axis of the mounting hole is flat.

In some embodiments, the surface of the second light-shielding pattern proximate to the axis of the mounting hole is substantially parallel to the axis of the mounting hole.

In some embodiments, the first light-shielding pattern is connected to the second light-shielding pattern.

In some embodiments, a material of the first light-shielding pattern and the second light-shielding pattern is black ink or a black hot melt adhesive.

In another aspect, a method for manufacturing a display apparatus is provided. The method for manufacturing the display apparatus includes:providing a display panel, the display panel including a functional device arrangement region and a main display region surrounding the functional device arrangement region; forming a first light-shielding pattern on a light-exit side of the display panel, an orthogonal projection of the first light-shielding pattern on the display panel substantially coinciding with the functional device arrangement region of the display panel;providing a circular polarizer, an adhesive layer and a first protective layer sequentially on the light-exit side of the display panel on which the first light-shielding pattern has been formed; punching a hole in the functional device arrangement region of the display panel to form an initial hole, the initial hole penetrating the display panel, the first light-shielding pattern, the circular polarizer, the adhesive layer and the first protective layer; etching a side wall of the initial hole so that the side wall of the initial hole is of one of a step-shaped and a protrusion-depression structure, so as to form a mounting hole; and forming a second light-shielding pattern, the second light-shielding pattern covering at least a side wall of the mounting hole.

In some embodiments, etching the side wall of the initial hole so that the side wall of the initial hole is of the one of the step-shaped and the protrusion-depression structure, so as to form the mounting hole includes: etching the display panel, the circular polarizer, the adhesive layer and the first protective layer for multiple times by using a laser beam, so that the side wall of the initial hole is of the one of the step-shaped and the protrusion-depression structure; or converging at least two focal points of at least two laser beams on at least two of the display panel, the circular polarizer, the adhesive layer and the first protective layer respectively, and etching the display panel, the circular polarizer, the adhesive layer and the first protective layer synchronously by using the at least two laser beams, so that the side wall of the initial hole is of the one of the step-shaped and the protrusion-depression structure.

In some embodiments, before punching the hole in the functional device arrangement region of the display panel, the manufacturing method further comprises: forming a second protective layer on a side of the display panel away from the adhesive layer; the initial hole formed by punching the hole in the functional device arrangement region of the display panel further penetrating the second protective layer.

In some embodiments, before forming the second light-shielding pattern, the manufacturing method further includes: forming a process film on a side of the second protective layer away from the display panel; and after forming the second light-shielding pattern on the side wall of the mounting hole, the manufacturing method further includes: removing the process film.

In some embodiments, after forming the second light-shielding pattern, the manufacturing method further includes: removing the first protective layer, and providing a cover plate on a side of the adhesive layer away from the display panel.

In yet another aspect, a display apparatus is provided. The display apparatus includes a display module and a cover plate. The display module has a functional device arrangement region and a main display region surrounding the functional device arrangement region; wherein the functional device arrangement region is provided with a mounting hole therein, and the functional device arrangement region includes a reserved region surrounding the mounting hole; a side wall of the mounting hole is of one of a step-shaped and a protrusion-depression structure. The display module includes a display panel, a first light-shielding pattern, an adhesive layer and a second light-shielding pattern; the first light-shielding pattern is disposed on a light-exit side of the display panel, and an orthogonal projection of the first light-shielding pattern on the display panel substantially coincides with the reserved region of the display panel; the adhesive layer is disposed on a side of the first light-shielding pattern away from the display panel, and the mounting hole penetrates the display panel, the first light-shielding pattern and the adhesive layer; the second light-shielding pattern covers at least the side wall of the mounting hole. The cover plate is disposed on a side of the adhesive layer away from the display panel.

In some embodiments, the second light-shielding pattern includes a fourth sub-pattern, and the fourth sub-pattern covers at least a portion of a surface of the adhesive layer away from the display panel that exceeds the first protective layer; a surface of the cover plate proximate to the display panel is in contact with a surface of the fourth sub-pattern.

In some embodiments, the display module further includes a circular polarizer. The circular polarizer is disposed between the display panel and the adhesive layer, and the first light-shielding pattern is located on a side of the circular polarizer proximate to the display panel, and the mounting hole further penetrates the circular polarizer.

In some embodiments, the display module further includes a second protective layer. The second protective layer is disposed on a side of the display panel away from the adhesive layer, and the mounting hole further penetrates the second protective layer.

DETAILED DESCRIPTION

As used herein, the term such as “about”, “substantially” or “approximately” includes a stated value and an average value within an acceptable range of deviation of a particular value. The acceptable range of deviation is determined by a person of ordinary skill in the art in view of measurement in question and errors associated with measurement of a particular quantity (i.e., limitations of a measurement system).

As shown inFIG.1, some embodiments of the present disclosure provide a display apparatus100. The display apparatus100may be a television (TV), a mobile phone, a computer, a notebook computer, a tablet computer, a personal digital assistant (PDA), an in-vehicle computer, or the like.

As shown inFIG.1, the display apparatus100includes a display panel1, a frame2, a cover plate3, a circuit board4and other electronic accessories.

A longitudinal section of the frame2is U-shaped. The cover plate3is disposed on an opening side of the frame2. The display panel1, the circuit board4and other electronic accessories are all arranged in the frame2. The circuit board4is disposed on a side of the display panel1away from the cover plate3.

In some embodiments, as shown inFIG.2, the display apparatus100further includes a circular polarizer5disposed between the cover plate3and the display panel1. The circular polarizer5is configured to reduce reflected light of external light after being reflected by a metal structure in the display panel1. Referring toFIG.3, the circular polarizer5may be adhered to the cover plate3through an adhesive layer6; for example, the circular polarizer5is adhered to the cover plate3through an optical adhesive.

In some embodiments, as shown inFIG.2, the display panel1has a display area A and a peripheral area B located on at least one side of the display area A.FIG.2illustrates a case where the peripheral area B surrounds the display area A.

The display area A is an area where an image is displayed. The peripheral area B is an area where no image is displayed, and is configured to provide display drive circuits, e.g., a gate drive circuit and a source drive circuit.

In some embodiments, as shown inFIGS.2and3, the display area A includes a functional device arrangement region A2and a main display region A1surrounding the functional device arrangement region. The main display region A1is configured to arrange a plurality of sub-pixels P. The functional device arrangement region A2is provided with a mounting hole H, and the functional device arrangement region A2includes a reserved region A21surrounding the mounting hole H.

At least one functional device may be disposed in the mounting hole H. The functional device may be a camera, an infrared sensor, a proximity sensor, an eye tracking module, a face recognition module, or the like. For example, as shown inFIG.2, the functional device arrangement region A2is a camera arrangement region, and a functional device is a camera.

As shown inFIG.4B, the display panel1includes a display substrate11and an encapsulation layer12for encapsulating the display substrate11.

Here, the encapsulation layer12may be an encapsulation film or an encapsulation substrate.

In some embodiments, as shown inFIG.4B, each sub-pixel P (referring toFIG.2) in the display substrate11includes a light-emitting device and a pixel driving circuit that are disposed on a substrate111. The pixel driving circuit includes a plurality of thin film transistors112. A thin film transistor112includes an active layer, a source, a drain, a gate and a gate insulating layer. The source and the drain are in contact with the active layer. In a direction parallel to a thickness direction of the substrate111and moving away from the substrate111, the light-emitting device includes a first electrode113, a light-emitting functional layer114, and a second electrode115.

Here, the first electrode113is an anode of the light-emitting device, and the second electrode115is a cathode of the light-emitting device; alternatively, the first electrode113is a cathode of the light-emitting device, and the second electrode115is an anode of the light-emitting device. The above situations are both allowable, and may be selected according to actual situations.

For example, as shown in4B, the first electrode113is the anode of the light-emitting device, and the second electrode is the cathode of the light-emitting device. The first electrode113is electrically connected to a source or a drain of a thin film transistor112as a driving transistor in the thin film transistors112.

The display substrate11further includes a pixel defining layer116. The pixel defining layer116has a plurality of opening regions, and a light-emitting device312is disposed in an opening region.

In some embodiments, the light-emitting functional layer114includes only a light-emitting layer. In some other embodiments, in addition to the light-emitting layer, the light-emitting functional layer114further includes at least one of an electron transporting layer (ETL), an electron injection layer (EIL), a hole transporting layer (HTL), or a hole injection layer (HIL).

As shown inFIG.4B, the display substrate11further includes a first planarization layer117disposed between the thin film transistor112and the first electrode113.

As shown inFIG.4B, the display substrate11further includes a second planarization layer118disposed between the encapsulation layer12and the second electrode115.

In the related art, as shown inFIG.3, a surface of the cover plate3proximate to the display panel1is provided with a light-shielding pattern7′ thereon. An orthogonal projection of an inner boundary of the light-shielding pattern7′ on the display panel1is located inside an inner boundary of the reserved region A21, so as to prevent light leakage at the mounting hole H; an orthogonal projection of an outer boundary of the light-shielding pattern7′ on the display panel1is located outside an outer boundary of the reserved area A21or approximately coincides with the outer boundary of the reserved region A21, so as to shield poor cutting such as burrs on a side wall of the mounting hole H and cracks at an edge of the mounting hole H.

However, in a manufacturing process of the display apparatus100in the related art, the cover plate3and the circular polarizer5need to be aligned once, and requirements for the process precision of the light-shielding pattern7′ provided on the cover plate3are relatively high. In this case, in order to ensure that the light-shielding pattern7′ can shield the poor cutting such as the burrs on the side wall of the mounting hole H and the cracks in the reserved region A21surrounding the mounting hole H, and in order to prevent the light leakage at the mounting hole H, it is impossible to design a width of the light-shielding pattern7′ to be very small (a limit of the width of the light-shielding pattern7′ may be up to 0.5 mm). As a result, the display area is reduced, and a screen-to-body ratio is reduced.

Some embodiments of the present disclosure provide a display module1000. Referring toFIGS.4B,5B,6B and7, the display module1000has the functional device arrangement region A2and the main display region A1surrounding the functional device arrangement region A2; the mounting hole H is disposed in the functional device arrangement region A2, and the functional device arrangement region A2includes the reserved region A21surrounding the mounting hole H; the side wall of the mounting hole H is of a step-shaped structure or a protrusion-depression structure.

As shown inFIG.4B, the display module1000includes the display panel1, a first light-shielding pattern7, an adhesive layer6and a second light-shielding pattern8. The first light-shielding pattern7is disposed on a light-exit side01of the display panel1. An orthogonal projection of the first light-shielding pattern7on the display panel1substantially coincides with the reserved region A21of the display panel1, so as to shield the poor cutting such as the cracks in the reserved region A21surrounding the mounting hole H. The adhesive layer6is disposed on a side of the first light-shielding pattern7away from the display panel1, and the mounting hole H penetrates the display panel1, the first light-shielding pattern7and the adhesive layer6. The second light-shielding pattern8covers at least the side wall of the mounting hole H to shield the burrs on the side wall of the mounting hole H and effectively prevent the light leakage at the mounting hole H.

As can be seen from the above, in the display module1000provided by some embodiments of the present disclosure, the first light-shielding pattern7is disposed on the light-exit side of the display panel1, and the adhesive layer6is disposed on the side of the first light-shielding pattern7away from the display panel1. In this way, the first light-shielding pattern7may be directly formed in the reserved region A21of the display panel1by using a deposition process (e.g., evaporation) or a photolithography process, which may reduce process difficulty compared with providing the first light-shielding pattern7on the cover plate3. Based on this, compared with the related art, a width of the first light-shielding pattern7in the display module1000provided by some embodiments of the present disclosure may be designed to be smaller (the width of the first light-shielding pattern7being approximately 0.3 mm), thereby increasing the display area.

In addition, the side wall of the mounting hole H is of the step-shaped structure or the protrusion-depression structure, so that a contact area between the second light-shielding pattern8and the mounting hole H may be increased, adhesion between the second light-shielding pattern8and the mounting hole H may be strengthened, and a risk of detachment of the second light-shielding pattern8may be reduced.

A material of the first light-shielding pattern7and the second light-shielding pattern8is black ink or a black hot melt adhesive. Of course, the first light-shielding pattern7and the second light-shielding pattern8may be made of other black light-shielding materials, and the embodiments of the present disclosure are not limited thereto.

In some embodiments, as shown inFIGS.4B,5B,6B and7, the first light-shielding pattern7is connected to the second light-shielding pattern8to ensure that there is no light leakage area between the first light-shielding pattern7in the reserved region A21and the second light-shielding pattern8on the side wall of the mounting hole H, so that the light leakage at the mounting hole H is effectively prevented.

In order to prevent external ambient light from interfering with an image to be displayed, in some embodiments, as shown inFIGS.4B,4C,5B,5C,6B to7, the display module1000further includes a circular polarizer5. The circular polarizer5is disposed between the display panel1and the adhesive layer6, and the first light-shielding pattern7is located on a side of the circular polarizer5proximate to the display panel1; the mounting hole H further penetrates the circular polarizer5. In this case, the circular polarizer5may effectively prevent the external ambient light from interfering with the image to be displayed.

In some other embodiments, referring toFIG.7, the display module1000includes black matrix patterns BM, and the black matrix patterns BM are disposed between the display panel1and the adhesive layer6. The black matrix pattern BM is configured to separate light emitted from different sub-pixels, and reduce effect of generating reflected light after the external ambient light enters the display panel1, i.e., reduce interference of the external ambient light on the image to be displayed. In this case, the first light-shielding pattern7may be disposed in a same layer and made of a same material as the black matrix patterns BM.

In some embodiments, as shown inFIGS.4C,5C and6C, the mounting hole H includes a plurality of sub-holes. The plurality of sub-holes are arranged in a thickness direction of the display panel1, and sides walls of at least two adjacent sub-holes are not flush with each other.

It will be noted that, a surface of a side wall of each sub-hole is flat, and the side wall of each sub-hole may be substantially parallel to the thickness direction of the display panel1(referring toFIGS.4B,5B and6B), or the side wall of each sub-hole may be at a certain angle to the thickness direction of the display panel1(referring toFIGS.4C,5C and6C). In a case where the side wall of each sub-hole is at a certain angle to the thickness direction of the display panel1, a difference between a maximum diameter and a minimum diameter of each sub-hole is in a range of 30 μm to 100 μm inclusive.

For example, as shown inFIGS.4C,5C and6C, the mounting hole H includes a first sub-hole H1, a second sub-hole H2and a third sub-hole H3. In a direction from the display panel1to the adhesive layer6, the first sub-hole H1, the second sub-hole H2and the third sub-hole H3are arranged in sequence.

Correspondingly, as shown inFIGS.4C,5C and6C, the second light-shielding pattern8includes a first sub-pattern81covering a side wall of the first sub-hole H1, a second sub-pattern82covering a side wall of the second sub-hole H2, and a third sub-pattern83covering a side wall of the third sub-hole H3.

In some embodiments, as shown inFIG.4C, a diameter of an end of the first sub-hole H1proximate to the second sub-hole H2is smaller than a diameter of an end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the first sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; a diameter of an end of the second sub-hole H2proximate to the third sub-hole H3is smaller than a diameter of an end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S2of the second sub-hole H2and the side wall S3of the third sub-hole H3provide another stepped structure. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 150 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is 50 μm to 150 μm smaller than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2.

Correspondingly, as shown inFIG.4C, a border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to an axis M1of the mounting hole H relative to a border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is further close to the axis M1of the mounting hole H relative to a border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

In some other embodiments, as shown inFIG.5C, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the first sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is equal to the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S2of the second sub-hole H2is flush with the side wall S3of the third sub-hole H3. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 150 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1.

Correspondingly, as shown inFIG.5C, the border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to the axis M1of the mounting hole H relative to the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is flush with the border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

In yet some other embodiments, as shown inFIG.6C, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the first sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is larger than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S3of the sub-hole H3protrudes relative to the side wall S2of the second sub-hole H2. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 200 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is 50 μm to 200 μm larger than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2.

Correspondingly, as shown inFIG.6C, the border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to the axis M1of the mounting hole H relative to the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is further away from the axis M1of the mounting hole H relative to the border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

The display panel1is provided with a plurality of inorganic films therein. Compared with organic films, the inorganic films are more fragile. During a process of punching a hole in the display panel1, cracks are prone to be generated at edge of the inorganic films corresponding to the hole. Based on this, in some embodiments, as shown inFIGS.4C,5C and6C, the first sub-hole H1penetrates the display panel1and the first light-shielding pattern7, the second sub-hole H2penetrates the circular polarizer5, and the third sub-hole H3penetrates the adhesive layer6.

In this case, the display panel1need to be punched only once, and there is no need to cut the side walls of the sub-hole corresponding to the display panel1, so that a risk of generating cracks at an edge of the sub-hole corresponding to the display panel1may be reduced, and a width of the reserved region A21of the display panel1may be designed to be small.

It will be noted that, in the embodiments of the present disclosure, a film layers that the first sub-hole H1, the second sub-hole H2and the third sub-hole H3penetrate respectively are not limited thereto.

In some embodiments, as shown inFIGS.4B,4C,5B,5C,6B,6C, and7, the display module1000further includes a first protective layer9. The first protective layer9is disposed on a surface of the adhesive layer6away from the display panel1, and the first protective layer9protects the surface of the adhesive layer6away from the display panel1.

In order to manufacture the display apparatus100, in a subsequent process, the first protective layer9of the display module1000needs to be peeled off to adhere the cover plate3to the adhesive layer. Based on this, the first protective layer9may be a release film, which facilitates peeling off of the first protective layer9.

Based on this, as shown inFIGS.4C,5C and6C, the mounting hole H further includes a fourth sub-hole H4penetrating the first protective layer9. A diameter of an end of the fourth sub-hole H4proximate to the third sub-hole H3is larger than a diameter of an end of the third sub-hole H3proximate to the fourth sub-hole H4, and a side wall S4of the fourth sub-hole H4and the side wall S3of the third sub-hole H3provide another stepped structure. For example, the diameter of the end of the fourth sub-hole H4proximate to the third sub-hole H3is 100 μm to 300 μm larger than the diameter of the end of the third sub-hole H3proximate to the fourth sub-hole H4.

Correspondingly, as shown inFIGS.4C,5C and6C, the second light-shielding pattern8further includes a fourth sub-pattern84, and the fourth sub-pattern84covers at least a portion of the surface of the adhesive layer6away from the display panel1that exceeds the first protective layer9. For example, an orthogonal projection of the fourth sub-pattern84on the display panel1is located within the reserved region A21of the display panel1; for another example, the orthogonal projection of the fourth sub-pattern84on the display panel1substantially coincides with the reserved region A21of the display panel.

In this case, since the fourth sub-pattern84is further adhered to the adhesive layer6over a large area, during a process of peeling off the first protective layer9, it is possible to reduce a risk of picking at a contact position between the first protective layer9and the fourth sub-pattern84, and facilitate the peeling off.

In addition, the fourth sub-pattern84may further shield cracks at edges in the reserved region A21of sub-holes on a side of the first light-shielding pattern7away from the display panel1, and further reduce the risk of light leakage.

In a process of forming the fourth sub-pattern84, the fourth sub-pattern84is integrally formed with a portion, except the fourth sub-pattern, of the second light-shielding pattern8that covers the side wall of the mounting hole H, so that processes may be simplified, and manufacturing costs may be reduced.

In some embodiments, as shown inFIGS.4A,4B,4C,5B,5C,6B,6C and7, the display module1000further includes a second protective layer10. The second protective layer10is disposed on a side of the display panel1away from the adhesive layer6, so as to support and protect the display panel1.

Based on this, as shown inFIGS.4C,5C and6C, the mounting hole H further includes a fifth sub-hole H5penetrating the second protective layer10. A diameter of an end of the fifth sub-hole H5proximate to the first sub-hole H1is equal to a diameter of an end of the first sub-hole H1proximate to the fifth sub-hole H5, and a side wall S5of the fifth sub-hole H5is flush with the side wall S1of the first sub-hole H1.

Correspondingly, as shown inFIGS.4C,5C and6C, the second light-shielding pattern further includes a fifth sub-pattern85covering the side wall of the fifth sub-hole.

In some embodiments, as shown inFIGS.4C,5C and6C, a surface of the second light-shielding pattern8proximate to the axis M1of the mounting hole H is flat, so as to reduce undesirable interference to external light received by an opening at an end of the second light-shielding pattern8that corresponds to a display side of the display panel1, and to ensure that more external light may enter the functional device through the mounting hole H.

In addition, as shown inFIGS.4C,5C, and6C, the surface of the second light-shielding pattern8proximate to the axis M1of the mounting hole H is substantially parallel to the axis M1of the mounting hole H. That is to say, an inner diameter of the second light-shielding pattern8is approximately equal, and most of the external light received by the opening at the end of the second light-shielding pattern8that corresponds to the display side of the display panel1may enter the functional device through the mounting hole H. In this way, it is possible to ensure that sufficient external light may enter the functional device through the mounting hole H in a case where the functional device arrangement region A2occupies a small part of the display area.

Some embodiments of the present disclosure provide a method for manufacturing a display apparatus100. As shown inFIG.8, the manufacturing method includes S100to S600.

In S100, a display panel1is provided. The display panel1has a functional device arrangement region A2and a main display region A1surrounding the functional device arrangement region A2.

In S200, a first light-shielding pattern7is formed on a light-exit side of the display panel1, and an orthogonal projection of the first light-shielding pattern7on the display panel1substantially coincides with the functional device arrangement region A2of the display panel1.

For example, a first light-shielding film is formed on the light-exit side of the display panel1by using a coating method, and then the first light-shielding pattern7is obtained through exposure, development and etching in sequence. The orthogonal projection of the first light-shielding pattern7on the display panel1substantially coincides with the functional device arrangement region A2of the display panel1.

In S300, a circular polarizer5, an adhesive layer6and a first protective layer9are sequentially provided on the light-exit side of the display panel1on which the first light-shielding pattern7has been formed.

For example, the circular polarizer5may be disposed on a side of the first light-shielding pattern7away from the display panel1through an adhesion method, and is adhered to the display panel1and the first light-shielding pattern7; the adhesive layer6and the first protective layer9are of an integral structure, and are directly adhered to a surface of the circular polarizer5away from the display panel1.

In S400, a hole is punched in the functional device arrangement region A2of the display panel1to form an initial hole, and the initial hole penetrates the display panel1, the first light-shielding pattern7, the circular polarizer5, the adhesive layer6and the first protective layer9.

For example, on a side of the first protective layer9away from the display panel1, a focal point of a laser beam is converged on a side of the display panel1away from the adhesive layer6, so as to cut the first protective layer9, the adhesive layer6, the circular polarizer5, the first light-shielding pattern7and the display panel1to form the initial hole.

For example, a pulsed femtosecond laser is used to emit a laser beam with a frequency of 500 KHZ to 800 KHZ to perform cutting at a corresponding cutting speed of 300 mm/s to 1500 mm/s for 30 to 100 times to form the initial hole.

In S500, a side wall of the initial hole is etched, so that the side wall of the initial hole is of a step-shaped structure or a protrusion-depression structure, so as to form a mounting hole H.

For example, the display panel1, the circular polarizer5, the adhesive layer6and the first protective layer9are etched for multiple times by using a laser beam, so that the side wall of the initial hole is of the step-shaped structure or the protrusion-depression structure.

For example, first, a focal point of a laser beam is converged on the circular polarizer5for etching, so that a side wall corresponding to a portion of the mounting hole H penetrating the circular polarizer5is retracted by 50 μm to 150 μm in a direction moving away from an axis of the mounting hole H, compared with a side wall corresponding to a portion of the mounting hole H penetrating the display panel1; then, the focal point of the laser beam is converged on the adhesive layer6for etching, so that a side wall corresponding to a portion of the mounting hole H penetrating the adhesive layer6is substantially flush with the side wall corresponding to the portion of the mounting hole H penetrating the circular polarizer5; and then, the focal point of the laser beam is converged on the first protective layer9for etching, so that a side wall corresponding to a portion of the mounting hole H penetrating the first protective layer9is retracted by 100 μm to 300 μm in the direction moving away from the axis of the mounting hole H, compared with the side wall corresponding to the portion corresponding to the mounting hole H penetrating the circular polarizer5. In this way, the side wall of the initial hole is of the step-shaped structure, and the mounting hole H is formed (referring toFIG.5C).

For another example, first, a focal point of a laser beam is converged on the circular polarizer5for etching, so that the side wall corresponding to the portion of the mounting hole H penetrating the circular polarizer5is retracted by 50 μm to 200 μm in the direction moving away from the axis of the mounting hole H; then, the focal point of the laser beam is converged on the first protective layer9for etching, so that the side wall corresponding to the portion of the mounting hole H penetrating the first protective layer9is retracted by 50 μm to 200 μm in the direction moving away from the axis of the mounting hole H. In this way, the side wall of the initial hole is of the protrusion-depression structure, and the mounting hole H is formed (referring toFIG.6C).

For example, at least two focal points of at least two laser beams are converged on at least two of the display panel, the circular polarizer, the adhesive layer and the first protective layer respectively, and the display panel, the circular polarizer, the adhesive layer and the first protective layer are synchronously etched by using the at least two laser beams, so that the side wall of the initial hole is of the step-shaped structure or the protrusion-depression structure.

For example, three focal points of three laser beams are converged on the circular polarizer5, the adhesive layer6and the first protective layer9respectively for etching, so that the side walls corresponding to the portions of the mounting hole H penetrating the circular polarizer5and the adhesive layer6are retracted by 50 μm to 150 μm in the direction away from the axis of the mounting hole H, compared with the side wall corresponding to the portion of the mounting hole H penetrating the display panel1; and the side wall corresponding to the portion of the mounting hole H penetrating the first protective layer9is retracted by 100 μm to 300 μm in the direction moving away from the axis of the mounting hole H, compared with the side walls corresponding to the portions of the mounting hole H penetrating the circular polarizer5and the adhesive layer6. In this way, the side wall of the initial hole is of the step-shaped structure, and the mounting holes H is formed (referring toFIG.4C).

For another example, two focal points of two laser beams are converged on the circular polarizer5and the first protective layer9respectively for etching, so that the side wall corresponding to the portion of the mounting hole H penetrating the circular polarizer5is retracted by 50 μm to 200 μm in the direction moving away from the axis of the mounting hole H, and the side wall corresponding to the portion of the mounting hole H penetrating the first protective layer9is retracted by 50 μm to 200 μm in the direction moving away from the axis of the mounting hole H. In this way, the side wall of the initial hole is of the protrusion-depression structure, and the mounting hole H is formed (referring toFIG.6C).

In S600, a second light-shielding pattern8is formed, and the second light-shielding pattern8covers at least a side wall of the mounting hole H.

For example, black ink is sprayed on the side wall of the mounting hole H or an adhesive (a black hot-melt adhesive) is dispensed on the side wall of the mounting hole H to form the second light-shielding pattern8.

In some embodiments, before S400, the method for manufacturing the display apparatus100further includes S310.

In S310, a second protective layer10is formed on a side of the display panel1away from the adhesive layer6.

Based on this, in S400, the initial hole formed by punching the hole in the functional device arrangement region A2of the display panel1further penetrates the second protective layer10.

In some embodiments, referring toFIG.9, before S600, the method for manufacturing the display apparatus100further includes S510, and after S600, the method for manufacturing the display apparatus100further includes S610.

In S510, a process film is formed on a side of the second protective layer10away from the display panel1, so as to facilitate transfer of a semi-finished product in a subsequent process of forming the second light-shielding pattern8, and to facilitate formation of the second light-shielding pattern8.

In S610, the process film is removed.

In some embodiments, referring toFIG.9, after S600, the method for manufacturing the display apparatus100further includes S620.

In S620, the first protective layer9is removed, and a cover plate3is provided on a side of the adhesive layer6away from the display panel1.

Some embodiments of the present disclosure provide a display apparatus100, as shown inFIGS.4A,5A and6A, the display apparatus100includes a display module1000and a cover plate3; the display module1000has a functional device arrangement region A2and a main display region A1surrounding the functional device arrangement region A2; the functional device arrangement region A2is provided with a mounting hole H therein, and the functional device arrangement region A2includes a reserved region A21surrounding the mounting hole H; a side wall of the mounting hole H is of a step-shaped structure or a protrusion-depression structure.

The display module1000includes a display panel1, a first light-shielding pattern7, an adhesive layer6and a second light-shielding pattern8; the first light-shielding pattern7is disposed on a light-exit side01of the display panel1, and an orthogonal projection of the first light-shielding pattern7on the display panel1substantially coincides with the reserved region A21of the display panel1; the adhesive layer6is disposed on a side of the first light-shielding pattern7away from the display panel1; the mounting hole H penetrates the display panel1, the first light-shielding pattern7and the adhesive layer6; the second light-shielding pattern8covers at least the side wall of the mounting hole H; the cover plate3is disposed on a side of the adhesive layer6away from the display panel1.

In some embodiments, referring toFIGS.4C,5C and6C, the mounting hole H includes a plurality of sub-holes. The plurality of sub-holes are arranged in a thickness direction of the display panel1, and side walls of at least two adjacent sub-holes are not flush with each other.

It will be noted that, a surface of a side wall of each sub-hole is flat, and the side wall of each sub-hole may be substantially parallel to the thickness direction of the display panel1(referring toFIGS.4B,5A,5B,6A and6B), or the side wall of each sub-hole may be at a certain angle to the thickness direction of the display panel1(referring toFIGS.4C,5C and6C). In a case where the side wall of each sub-hole is at a certain angle to the thickness direction of the display panel1, a difference between a maximum diameter and a minimum diameter of each sub-hole is in a range of 30 μm to 100 μm inclusive.

For example, as shown inFIGS.4C,5C and6C, the mounting hole H includes a first sub-hole H1, a second sub-hole H2and a third sub-hole H3. In the thickness direction of the display panel1and a direction from the display panel1to the adhesive layer6, the first sub-hole H1, the second sub-hole H2and the third sub-hole H3are arranged in sequence.

Correspondingly, as shown inFIGS.4C,5C and6C, the second light-shielding pattern8includes a first sub-pattern81covering a side wall S1of the first sub-hole H1and a second sub-pattern82covering a side wall S2of the second sub-hole H2, and a third sub-pattern83covering a side wall S3of the third sub-hole H3.

In some embodiments, as shown inFIG.4C, a diameter of an end of the first sub-hole H1proximate to the second sub-hole H2is smaller than a diameter of an end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the first sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; a diameter of an end of the second sub-hole H2proximate to the third sub-hole H3is smaller than a diameter of an end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S2of the second sub-hole H2and the side wall S3of the third sub-hole H3provide another stepped structure. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 150 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is 50 μm to 150 μm smaller than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2.

Correspondingly, as shown inFIG.4C, a border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to an axis M1of the mounting hole H relative to a border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is further close to the axis M1of the mounting hole H relative to a border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

In some other embodiments, as shown inFIG.5C, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is equal to the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S2of the second sub-hole H2is flush with the side wall S3of the third sub-hole H3. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 150 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1.

Correspondingly, as shown inFIG.5C, the border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to the axis M1of the mounting hole H relative to the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is flush with the border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

In yet some other embodiments, as shown inFIG.6C, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the side wall S1of the first sub-hole H1and the side wall S2of the second sub-hole H2provide a stepped structure; the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is larger than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2, and the side wall S3of the third sub-hole H3protrudes relative to the side wall S2of the second sub-hole H2. For example, the diameter of the end of the first sub-hole H1proximate to the second sub-hole H2is 50 μm to 200 μm smaller than the diameter of the end of the second sub-hole H2proximate to the first sub-hole H1, and the diameter of the end of the second sub-hole H2proximate to the third sub-hole H3is 50 μm to 200 μm larger than the diameter of the end of the third sub-hole H3proximate to the second sub-hole H2.

Correspondingly, as shown inFIG.6C, the border of the first sub-pattern81proximate to the side wall S1of the first sub-hole H1is further close to the axis M1of the mounting hole H relative to the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2; the border of the second sub-pattern82proximate to the side wall S2of the second sub-hole H2is further away from the axis M1of the mounting hole H relative to the border of the third sub-pattern83proximate to the side wall S3of the third sub-hole H3.

In some embodiments, as shown inFIGS.4A,5A and6A, the display module1000of the display apparatus100further includes a circular polarizer5. The circular polarizer5is disposed between the display panel1and the adhesive layer6, and the first light-shielding pattern7is located on a side of the circular polarizer5proximate to the display panel1; the mounting hole H penetrates the circular polarizer5.

The display panel1is provided with a plurality of inorganic films therein. Compared with organic films, the inorganic films are more fragile. During a process of punching a hole in the display panel1, cracks are prone to be generated at edges of the holes corresponding to the inorganic films. Based on this, in some embodiments, as shown inFIGS.4C,5C and6C, the first sub-hole H1penetrates the display panel1and the first light-shielding pattern7, the second sub-hole H2penetrates the circular polarizer5, and the third sub-hole H3penetrates the adhesive layer6.

In this case, the display panel1need to be punched only once, and there is no need to cut the side wall of the sub-hole corresponding to the display panel1, so that a risk of generating cracks at an edge of the sub-hole corresponding to the display panel1may be reduced, and a width of the reserved region A21of the display panel1may be designed to be small.

It will be noted that, in the embodiments of the present disclosure, a film layer that the first sub-hole H1, the second sub-hole H2and the third sub-hole H3penetrate respectively are not limited thereto.

In some embodiments, referring toFIGS.4C,5C and6C, the second light-shielding pattern8includes a fourth sub-pattern84, and the fourth sub-pattern84covers a portion of a surface of the adhesive layer6away from the display panel1that exceeds the first protective layer9; a surface of the cover plate3proximate to the display panel1is in contact with a surface of the fourth sub-pattern84.

Here, an orthogonal projection of the fourth sub-pattern84on the display panel1is located within the reserved region A21of the display panel1; alternatively, the orthogonal projection of the fourth sub-pattern84on the display panel1substantially coincides with the reserved region A21of the display panel1.

In this case, since the fourth sub-pattern84is further adhered to the adhesive layer6over a large area, during a process of peeling off the first protective layer9on the adhesive layer6in a manufacturing process of the display apparatus100, it is possible to reduce a risk of picking at a contact position between the first protective layer9and the fourth sub-pattern84, and facilitate the peeling off.

In addition, the fourth sub-pattern84may further shield cracks at edges in the reserved region A21of sub-holes on a side of the first light-shielding pattern7away from the display panel1, and further reduce the risk of light leakage.

In a process of forming the fourth sub-pattern84, the fourth sub-pattern84is integrally formed with a portion of the second light-shielding pattern8that covers the side wall of the mounting hole H, so that processes may be simplified, and manufacturing costs may be reduced.

In some embodiments, as shown inFIGS.4A,5A and6A, the display module1000of the display apparatus100further includes a second protective layer10. The second protective layer10is disposed on a side of the display panel1away from the adhesive layer6, and the mounting hole H penetrates the second protective layer10.

Based on this, referring toFIGS.4C,5C and6C, the mounting hole H further includes a fifth sub-hole H5penetrating the second protective layer10. A diameter of an end of the fifth sub-hole H5proximate to the sub-hole H1is equal to a diameter of an end of the sub-hole H1proximate to the fifth sub-hole H5, and a side wall S5of the fifth sub-hole H5is flush with the side wall S1of the first sub-hole H1.

Correspondingly, referring toFIGS.4C,5C and6C, the second light-shielding pattern further includes a fifth sub-pattern85covering the side wall S5of the fifth sub-hole.

In some embodiments, as shown inFIGS.4A,5A and6A, a surface of the second light-shielding pattern8proximate to the axis M1of the mounting hole H is flat, so as to reduce undesirable interference to external light received by an opening at an end of the second light-shielding pattern8that corresponds to a display side of the display panel1, and to ensure that more external light may enter the functional device through the mounting hole H.

In addition, the surface of the second light-shielding pattern8proximate to the axis of the mounting hole H is substantially parallel to the axis of the mounting hole H. That is to say, an inner diameter of the second light-shielding pattern8is approximately equal, and most of the external light received by the opening at the end of the second light-shielding pattern8that corresponds to the display side of the display panel1may enter the functional device through the mounting hole H. In this way, it is possible to ensure that sufficient external light may enter the functional device through the mounting hole H in a case where the functional device arrangement region A2occupies a small part of a display area.