CN114495720A - Flexible display module, display device and electronic equipment - Google Patents
Flexible display module, display device and electronic equipment Download PDFInfo
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- CN114495720A CN114495720A CN202210113415.4A CN202210113415A CN114495720A CN 114495720 A CN114495720 A CN 114495720A CN 202210113415 A CN202210113415 A CN 202210113415A CN 114495720 A CN114495720 A CN 114495720A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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Abstract
The embodiment of the application provides a flexible display module, a display device and electronic equipment. Flexible display module assembly includes: a display panel; a plurality of organic film layers disposed on a backlight side of the display panel; the supporting layer is arranged on one side, far away from the display panel, of the multilayer organic film layer; an optical fingerprint sensor arranged on one side of the supporting layer far away from the multilayer organic film layer; the supporting layer is provided with an opening area, at least one first through hole is arranged in the opening area, a transparent filler is arranged in the first through hole, and the first through hole is arranged opposite to the optical fingerprint sensor in the thickness direction of the flexible display module.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible display module, a display device and electronic equipment.
Background
With the development of display technology, Organic Light-Emitting Diode (OLED) flexible display screens are gradually exposed at the corners. The flexible display screen is a screen which can be bent and folded and has good flexibility. Compared with the traditional rigid screen, the flexible screen has the characteristics of good flexibility, light and thin volume, lower power consumption, rubbing resistance and the like. With the overall upgrade of electronic products such as mobile phones, tablets, notebook computers and the like from quality to appearance, the requirements for screens and performance are continuously expanded, so that the flexible OLED screens are widely applied to the electronic products. In order to improve convenience of electronic products, the electronic products are usually equipped with a fingerprint identification function, and the off-screen optical fingerprint identification is a common one of the fingerprint identification functions.
In the related art, in order to improve the strength of the flexible display panel, a layer of supporting member, such as a stainless steel plate, a heat dissipation film, etc., is usually added on the back of the display panel. However, due to the unreasonable arrangement of these structures and the poor light transmittance, the sensitivity and accuracy of the optical fingerprint recognition function applied to the flexible display screen are poor, which is not favorable for improving the reliability of fingerprint recognition, and further affects the normal use of the electronic product.
Disclosure of Invention
An object of the embodiment of the application is to provide a flexible display module, display device and electronic equipment to improve the regional light transmissivity of display module fingerprint identification, and then do benefit to the reliability that improves fingerprint identification and the performance of electronic product.
This application first aspect provides a flexible display module assembly, includes: a display panel; a plurality of organic film layers disposed on a backlight side of the display panel; the supporting layer is arranged on one side, far away from the display panel, of the multilayer organic film layer; an optical fingerprint sensor arranged on one side of the supporting layer far away from the multilayer organic film layer; the supporting layer is provided with an opening area, at least one first through hole is arranged in the opening area, a transparent filler is arranged in the first through hole, and the first through hole is arranged opposite to the optical fingerprint sensor in the thickness direction of the flexible display module.
According to the embodiment of the application, the opening area is arranged at the position, opposite to the optical fingerprint sensor, of the supporting layer, and the transparent filler is placed in the first through hole of the opening area, so that the accuracy and the sensitivity of the optical fingerprint identification function are improved. The trompil district sets up with optics fingerprint sensor relatively, after the light that the finger reflects jets into flexible display module assembly, because be provided with the trompil district on the supporting layer, and be transparent filler in the trompil district, reflected light can get into the optics fingerprint sensor who lies in the trompil district below comparatively easily on to be favorable to improving the light quantity that gets into on the optics fingerprint sensor, and then do benefit to sensitivity and the reliability that improves the fingerprint identification function of flexible display module assembly.
According to the flexible display module of this application embodiment, still can have following additional technical characterstic:
in some embodiments of the present application, the open region is formed by patterning the support layer, a plurality of the first through holes are formed in the open region, and the transparent filler is a transparent adhesive.
In some embodiments of the present application, the first through hole is formed by performing a hole digging process on the support layer, the modulus of the transparent filler is not less than 1GPa, and the transparent filler is fixed to the inner wall of the first through hole by a transparent adhesive.
In some embodiments of the present application, the transparent filler is an organic transparent material having a modulus of 2GPa to 6GPa or an inorganic transparent material having a modulus of 50GPa to 100 GPa.
In some embodiments of this application, multilayer organic rete includes notacoria, optical cement and bubble cotton layer, the notacoria sets up display panel's the side of being shaded, the optical cement sets up keeping away from of notacoria one side of display panel, the bubble cotton layer sets up the optical cement with between the supporting layer.
In some embodiments of the present application, a second through hole is disposed on the bubble surface layer, a lens structure is disposed in the second through hole, and the first through hole is disposed opposite to the second through hole in a thickness direction of the flexible display module.
In some embodiments of the present application, the supporting layer has a bendable region, and a plurality of third through holes are disposed in the bendable region.
In some embodiments of the present application, the flexible display module further includes a polarizer and a cover plate, the polarizer is disposed on the light emitting side of the display panel, and the cover plate is disposed on one side of the polarizer, which is far away from the display panel.
In some embodiments of the present application, the opening region is a plurality of openings, and the first through holes of the plurality of opening regions are disposed opposite to the optical fingerprint sensor in a thickness direction of the flexible display module. The second aspect of the present application provides a display device, including the flexible display module according to the first aspect.
The sensitivity and the reliability of the fingerprint identification function of the display device are high. The flexible display module comprises the flexible display module in the first aspect. The flexible display module sets up the trompil region through the position relative at supporting layer and optics fingerprint sensor to place the mode of transparent filler in the first through-hole of trompil region, thereby improve the degree of accuracy and the sensitivity of optics fingerprint identification function. The trompil district sets up with optics fingerprint sensor relatively, after the light that reflects when the finger jets into flexible display module assembly, because be provided with the trompil district on the supporting layer, and be transparent filler in the trompil district, reflected light can get into the optics fingerprint sensor who lies in the trompil district below comparatively easily on to be favorable to improving the light quantity that gets into on the optics fingerprint sensor, and then do benefit to sensitivity and the reliability that improves display device's fingerprint identification function.
A third aspect of the present application provides an electronic device comprising the display device of the second aspect.
The sensitivity and the reliability of the fingerprint identification function of the electronic equipment are high. Which comprises the flexible display module of the first aspect. The flexible display module sets up the trompil region through the position relative at supporting layer and optics fingerprint sensor to place the mode of transparent filler in the first through-hole of trompil region, thereby improve the degree of accuracy and the sensitivity of optics fingerprint identification function. The trompil district sets up with optics fingerprint sensor relatively, after the light that reflects when the finger jets into flexible display module assembly, because be provided with the trompil district on the supporting layer, and be transparent filler in the trompil district, reflected light can get into the optics fingerprint sensor who lies in the trompil district below comparatively easily on to be favorable to improving the light quantity that gets into on the optics fingerprint sensor, and then the sensitivity and the reliability that do benefit to the fingerprint identification function that improves electronic equipment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
Fig. 1 is a schematic structural diagram of a fingerprint identification function of a flexible display screen in the related art;
FIG. 2 is a top view of a flexible display module according to an embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view taken along line D-D of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line D-D of FIG. 2;
FIG. 5 is a schematic structural diagram of one of the open regions according to the embodiments of the present disclosure;
FIG. 6 is a schematic structural diagram of another opening region according to an embodiment of the present disclosure;
fig. 7 is a flowchart of a method for manufacturing a flexible display module according to an embodiment of the present application.
The reference numbers are as follows:
1-a cover plate layer; 2-a polarizing layer; 3-a panel; 4-a backing film layer; 5-optical glue; 6-a support layer; 7-a flexible display screen; 8-an optical fingerprint module; 9-a circuit board; 10-a photosensitive chip; 11-a cover plate; 100-a flexible display module; 110-a display panel; 120-a multilayer organic film layer; 121-a backing film; 122-optical glue; 123-foam cotton layer; 1231-a second via; 1232-lens structure; 1233-a diffusion portion; 1234-a gathering section; 130-a support layer; 131-an open area; 1311 — a first via; 132-a bendable region; 1321-a third via; 140-an optical fingerprint sensor; 141-an orthographic projection area; 150-transparent filler; 160-a polarizer; 170-cover plate; 200-finger; 180-transparent glue.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
With the development of display technology, the OLED flexible display screen gradually has a new corner. The flexible display screen is a screen which can be bent and folded and has good flexibility. Compared with the traditional rigid screen, the flexible screen has the characteristics of good flexibility, light and thin volume, lower power consumption, rubbing resistance and the like. With the overall upgrade of electronic products such as mobile phones, tablets, notebook computers and the like from quality to appearance, the requirements for screens and performance are continuously expanded, so that the flexible OLED screens are widely applied to the electronic products.
In order to improve convenience of electronic products, the electronic products are usually equipped with a fingerprint identification function, and the off-screen optical fingerprint identification is a common one of the fingerprint identification functions. As shown in fig. 1, a flexible display 7 in the related art is provided with a structural diagram of an optical fingerprint sensor 8 under a screen. The flexible display 7 comprises a cover plate layer 1, a polarizer 2, a panel 3, a back film layer 4, an optical adhesive 5, a support layer 6 and the like, and the optical fingerprint sensor 8 comprises a circuit board 9, a photosensitive chip 10, a cover plate 11 and the like. Since the cover plate layer 1 of the flexible display 7 is usually made of PI, PET, ultra-thin glass, and the like, the supporting layer 6 disposed on the backlight side of the panel 3 can effectively improve the strength of the flexible display 7. The support layer 6 may be a SUS stainless steel plate having a thickness of 100-. And a screen lower optical fingerprint sensor 8 is also arranged below the flexible display screen 7. The fingerprint identification function is specifically as follows: when the finger 200 contacts on the flexible display screen 7, the panel 3 of the flexible display screen 7 emits the light ray a to irradiate on the finger 200, so that the finger 200 can reflect the light ray to the flexible display screen 7 again, the reflected light ray a passes through a plurality of layer structures of the flexible display screen 7 and then reaches the photosensitive chip 10 of the optical fingerprint sensor 8 below, and the photosensitive chip 10 processes the reflected light ray a of the received finger 200 and compares the reflected light ray a with the fingerprint of the finger 200. In this way, optical fingerprint recognition is achieved.
However, the presence of the support layer 6 in the flexible display 7 may affect the accuracy as well as the sensitivity of the optical fingerprint sensor 8. Due to the poor light transmittance and the thick thickness of the supporting layer 6, it is difficult for the light ray a reflected by the finger 200 to enter the optical fingerprint sensor 8 under the flexible display 7, and even the reflected light ray may not enter the photosensitive chip 10. Thus, the reflected light ray a received by the optical fingerprint sensor 8 is weak, thereby affecting the normal use of the optical fingerprint sensor 8.
On the other hand, due to the characteristics of lightness, thinness, good flexibility and the like of the flexible display screen 7, the method for digging a hole on the supporting layer 6 to place the optical fingerprint sensor 8 in the traditional hard screen is not suitable for the flexible display screen 7, and the problem that the screen of the flexible display screen 7 is sunken and the like is possibly caused, so that the user experience is influenced.
In view of the above problems, the present application provides a flexible display module 100 in a first aspect. As shown in fig. 2 and 3, the flexible display module 100 includes a display panel 110, a plurality of organic film layers 120, a support layer 130, and an optical fingerprint sensor 140. The multi-layer organic film layer 120 is disposed on the backlight side of the display panel 110; the support layer 130 is disposed on a side of the multi-layer organic film layer 120 away from the display panel 110; the optical fingerprint sensor 140 is disposed on a side of the support layer 130 away from the multilayer organic film layer 120. The supporting layer 130 has an opening area 131, at least one first through hole 1311 is disposed in the opening area 131, a transparent filler 150 is disposed in the first through hole 1311, and the first through hole 1311 is disposed opposite to the optical fingerprint sensor 140 in a thickness direction of the flexible display module 100.
The display panel 110 refers to an OLED device structure for providing a light source in the flexible display module 100, and generally includes a substrate, an anode, a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, an electron injection layer, a cathode, and the like. The light emitting principle of the OLED device is as follows: under the action of an electric field, electrons and holes are respectively injected into the electron transport layer and the hole transport layer from the cathode and the anode, and the electrons and the holes respectively migrate to the luminescent material layer through the electron transport layer and the hole transport layer and meet in the luminescent material layer to form excitons and excite luminescent molecules to emit visible light.
The transparent filler 150 may be a transparent adhesive 180, an ultra-thin flexible glass (UTG), a plastic glass (PMMA), a PET polyester material, or other transparent material, and is filled in the first through hole 1311, so that the strength of the open hole region 131 can be improved while the high light transmittance of the open hole region 131 is maintained, and the improvement of the sensitivity of the fingerprint identification function is facilitated.
Fig. 2 is a schematic top view of the flexible display module 100, wherein the dashed square in the display panel 110 represents: when viewed along the thickness direction of the flexible display module 100, the optical fingerprint sensor 140 is located in the forward projection area 141 of the display panel 110. Since the flexible display module 100 has a multi-layer structure, the forward projection area 141 can also be represented as a forward projection area 141 of the optical fingerprint sensor 140 on the support layer 130. The first through hole 1311 of the opening area 131 is disposed opposite to the optical fingerprint sensor 140 in the thickness direction of the flexible display module 100, that is, the opening area 131 is located in the orthographic projection area 141 of the optical fingerprint sensor 140 on the support layer 130. Thus, the reflected light B can smoothly enter the optical fingerprint sensor 140 through the first through hole 1311, and the reliability of fingerprint recognition can be improved.
In the embodiment of the present application, the display panel 110 is used for providing visible light for the finger 200 of the person. The multi-layer organic film layer 120 is disposed on a backlight side of the display panel 110 to protect the display panel 110; a support layer 130 is further disposed below the multi-layer organic film layer 120, the support layer 130 may be made of SUS stainless steel, SCF heat dissipation film, or the like as described in the aforementioned related art, and an optical fingerprint sensor 140 is disposed below the support layer 130. In the embodiment of the application, the opening region 131 is disposed at a position of the support layer 130 opposite to the optical fingerprint sensor 140, and the transparent filler 150 is disposed in the first through hole 1311 of the opening region 131, so that the accuracy and sensitivity of the optical fingerprint identification function are improved. The opening area 131 and the optical fingerprint sensor 140 are arranged relatively, after the light reflected by the finger 200 is incident into the flexible display module 100, because the opening area 131 is arranged on the supporting layer 130, and the transparent filler 150 is arranged in the opening area 131, the reflected light can easily enter the optical fingerprint sensor 140 below the opening area 131, so that the light quantity entering the optical fingerprint sensor 140 is favorably improved, and the sensitivity and the reliability of the fingerprint identification function of the flexible display module 100 are favorably improved.
In some embodiments of the present disclosure, as shown in fig. 3, the opening region 131 is formed by patterning the support layer 130, a plurality of first through holes 1311 are formed in the opening region 131, and the transparent filler 150 is the transparent adhesive 180. The open region 131 may be formed by etching, laser engraving, or the like. The opening region 131 is set to be a pattern region with a plurality of first through holes 1311, which is beneficial to improving the light transmittance of the opening region 131, and at the same time, reduces the influence of the first through holes 1311 on the strength of the flexible display module 100, thereby being beneficial to improving the performance and reliability of the flexible display module 100.
As shown in fig. 4, in some embodiments of the present disclosure, the first through hole 1311 is formed by drilling the supporting layer 130, the modulus of the transparent filler 150 is not less than 1Gpa, and the transparent filler 150 is fixed to the inner wall of the first through hole 1311 by the transparent adhesive 180.
The modulus is the ratio of stress to strain of a material under stress, and the larger the value of the modulus is, the larger the stress for causing the material to generate certain elastic deformation is, that is, the larger the rigidity of the material is. The open region 131 may also form a first through hole 1311 having an area equal to that of the open region 131 by drilling, and the first through hole 1311 is filled with the transparent filler 150 having a modulus of not less than 1GPa, so as to improve the light transmittance of the open region 131, reduce the influence of the first through hole 1311 on the strength of the flexible display module 100, and further improve the performance and reliability of the flexible display module 100.
Specifically, the transparent filler 150 may be an organic transparent material with a modulus of 1GPa to 9GPa, or an inorganic transparent material with a modulus of 20GPa to 120GPa, which can satisfy the above requirements. Preferably, the transparent filler 150 may be made of an organic transparent material with a modulus of 2GPa to 6GPa (such as PMMA, PET, PC, etc.), or an inorganic transparent material with a modulus of 50GPa to 100GPa (such as UTG glass, transparent sapphire, etc.), and tests prove that the material in the above modulus range can well meet the use requirements.
In some embodiments of the present application, the multi-layer organic film layer 120 includes a back film 121, an optical adhesive 122, and a foam layer 123, the back film 121 is disposed on the backlight side of the display panel 110, the optical adhesive 122 is disposed on the side of the back film 121 far away from the display panel 110, and the foam layer 123 is disposed between the optical adhesive 122 and the support layer 130. By providing the back film 121, the display panel 110 is protected conveniently.
After the opening region 131 is disposed on the support layer 130 and the transparent filler 150 is filled in the opening region 131, due to the different materials of the transparent filler 150 and the support layer 130, when the flexible display module 100 is pressed, an impression of the opening region 131 may be displayed on the flexible display module 100, thereby affecting the display effect. Therefore, the foam layer 123 is disposed above the supporting layer 130 to eliminate the impression of the opening region 131, which is favorable for improving the display effect.
In some embodiments of the present application, a second through hole 1231 is disposed on the foam layer 123, a lens structure 1232 is disposed in the second through hole 1231, and the first through hole 1311 is disposed opposite to the second through hole 1231 in a thickness direction of the flexible display module 100.
To further increase the amount of light entering the optical fingerprint sensor 140, a lens structure 1232 may be added to the foam layer 123. As shown in fig. 4, the side of the lens structure 1232 away from the support layer 130 is a diffusion 1233, and the side close to the support layer 130 is a focusing 1234. That is, the divergent light C emitted from the display panel 110 is reflected by the finger 200 and then enters the flexible display module 100 again. The light C that many places are diverged is refracted back through the lens structure 1232 of second through-hole 1231, assembles on optical fingerprint sensor 140 of supporting layer 130 trompil district 131 below to be favorable to improving the light quantity that the unit area got into optical fingerprint sensor 140, and then be favorable to improving fingerprint identification's accuracy.
In some embodiments of the present application, as shown in fig. 3, the supporting layer 130 has a bendable region 132, and a plurality of third through holes 1321 are disposed in the bendable region 132. Through setting up bendable region 132, can realize the demand of buckling of supporting layer 130, and then be favorable to reducing and buckle because of flexible display module 100 and cause the cracked risk of supporting layer 130.
In some embodiments of the present disclosure, the flexible display module 100 further includes a polarizer 160 and a cover plate 170, the polarizer 160 is disposed on the light-emitting side of the display panel 110, and the cover plate 170 is disposed on a side of the polarizer 160 away from the display panel 110. After the polarizer 160 is disposed, the external light cannot irradiate the cathode or anode metal electrode in the display panel 110 after being blocked by the polarizer 160, so as to reduce the reflected light of the metal electrode, and improve the contrast and the display effect of the flexible display module 100 in a bright environment. The cover plate 170 is usually made of PI, PET, ultra-thin glass, and the like, which is beneficial to improving the flexibility of the flexible display module 100.
In some embodiments of the present disclosure, as shown in fig. 5 or fig. 6, the plurality of the opening regions 131 are provided, and the first through holes 1311 of the plurality of opening regions 131 are disposed opposite to the optical fingerprint sensor 140 in a thickness direction of the flexible display module 100. In the embodiment of the present application, the opening driver 131 has a plurality of openings, for example, the number of the opening areas 131 may be two (fig. 5), four (fig. 6), and the like. The first through hole 1311 of each of the opening regions 131 is disposed opposite to the optical fingerprint sensor 140 in a thickness direction of the flexible display module 100. That is, the optical fingerprint sensor 140 may be located under the plurality of open regions 131. Observe on the thickness direction of following flexible display module 100, optics fingerprint sensor 140 has orthographic projection area 141 on supporting layer 130, and a plurality of open area 131 can be as shown in fig. 5 and fig. 6 in orthographic projection area 141 evenly distributed to be favorable to making optics fingerprint sensor 140 from the even received light in many places of supporting layer 130, and then do benefit to area and the accuracy that improves fingerprint identification. It is readily understood that the plurality of open regions 131 may also be non-uniformly distributed within the forward projection region 141; alternatively, the areas of the plurality of open regions 131 may be different from each other; alternatively, the larger the number of the opening regions 131, the smaller the area of each opening region 131; or, the area of trompil district 131 is the same with the orthographic projection district 141 area of optics fingerprint sensor 140 at supporting layer 130, and at this moment, can realize the fingerprint identification of whole finger 200, and then does benefit to the fingerprint identification reliability that improves flexible display module assembly 100.
A second aspect of the present application provides a display device, which includes the flexible display module 100 of the first aspect.
The sensitivity and the reliability of the fingerprint identification function of the display device are high. Comprising the flexible display module 100 according to the first aspect. The flexible display module 100 is provided with the opening region 131 at a position opposite to the optical fingerprint sensor 140 on the support layer 130, and the transparent filler 150 is placed in the first through hole 1311 of the opening region 131, so that the accuracy and sensitivity of the optical fingerprint identification function are improved. The opening area 131 and the optical fingerprint sensor 140 are arranged relatively, after the light reflected by the finger 200 is incident into the flexible display module 100, the opening area 131 is arranged on the supporting layer 130, the transparent filler 150 is arranged in the opening area 131, the reflected light can easily enter the optical fingerprint sensor 140 below the opening area 131, so that the light quantity entering the optical fingerprint sensor 140 is favorably improved, and the sensitivity and the reliability of the fingerprint identification function of the display device are favorably improved.
A third aspect of the present application provides an electronic device comprising the display device of the second aspect.
The sensitivity and the reliability of the fingerprint identification function of the electronic equipment are high. Comprising the flexible display module 100 according to the first aspect. The flexible display module 100 is provided with the opening region 131 at a position opposite to the optical fingerprint sensor 140 on the support layer 130, and the transparent filler 150 is placed in the first through hole 1311 of the opening region 131, so that the accuracy and sensitivity of the optical fingerprint identification function are improved. The opening area 131 and the optical fingerprint sensor 140 are arranged relatively, after the light reflected by the finger 200 is incident into the flexible display module 100, the opening area 131 is arranged on the supporting layer 130, the transparent filler 150 is arranged in the opening area 131, the reflected light can easily enter the optical fingerprint sensor 140 below the opening area 131, so that the light quantity entering the optical fingerprint sensor 140 is favorably improved, and the sensitivity and the reliability of the fingerprint identification function of the electronic equipment are favorably improved.
As shown in fig. 7, a fourth aspect of the present application provides a method for manufacturing a flexible display module, including:
pasting the multi-layer organic film layer 120 on the backlight side of the display panel 110;
manufacturing an open area 131 comprising at least one first through hole 1311 on the support layer 130, arranging a transparent filler 150 in the first through hole 1311, and adhering the support layer 130 to a side of the multi-layer organic film layer 120 away from the display panel 110;
the optical fingerprint sensor 140 is disposed on a side of the support layer 130 away from the multi-layer organic film layer 120, and the first through hole 1311 is opposite to the optical fingerprint sensor 140 in a thickness direction of the flexible display module 100.
The flexible display module 100 manufactured by the manufacturing method of the flexible display module has high sensitivity and reliability of the fingerprint identification function. The accuracy and sensitivity of the optical fingerprint identification function are improved by arranging the opening area 131 at the position of the support layer 130 opposite to the optical fingerprint sensor 140 and placing the transparent filler 150 in the first through hole 1311 of the opening area 131. The opening area 131 and the optical fingerprint sensor 140 are arranged relatively, after the light reflected by the finger 200 is incident into the flexible display module 100, the opening area 131 is arranged on the supporting layer 130, the transparent filler 150 is arranged in the opening area 131, the reflected light can easily enter the optical fingerprint sensor 140 below the opening area 131, so that the light quantity entering the optical fingerprint sensor 140 is favorably improved, and the sensitivity and the reliability of the fingerprint identification function of the electronic equipment are favorably improved.
In some embodiments of the present application, the step of fabricating the open region 131 including the at least one first via 1311 on the support layer 130 includes:
the support layer 130 is patterned to form a plurality of first via holes 1311. The opening region 131 is set to be a pattern region with a plurality of first through holes 1311, which is beneficial to improving the light transmittance of the opening region 131, and at the same time, reduces the influence of the first through holes 1311 on the strength of the flexible display module 100, thereby being beneficial to improving the performance and reliability of the flexible display module 100.
In some embodiments of the present application, the step of disposing the transparent filler 150 in the first via 1311 includes:
the transparent adhesive 180 is filled in the first through hole 1311. The transparent filler 150 may be a transparent adhesive 180. Of course, the transparent filler 150 can be made of other transparent materials such as ultra-thin flexible glass, organic glass, PET polyester material, etc.
In some embodiments of the present application, the step of fabricating the open region 131 including the at least one first via 1311 on the support layer 130 includes:
the support layer 130 is dug to form a first via 1311. The opening region 131 may also be dug to form a first through hole 1311 having an area equal to that of the opening region 131, which is advantageous for further improving the light transmittance of the opening region 131.
In some embodiments of the present application, the step of disposing the transparent filler 150 in the first via 1311 includes:
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (11)
1. The utility model provides a flexible display module assembly which characterized in that includes:
a display panel;
a plurality of organic film layers disposed on a backlight side of the display panel;
the supporting layer is arranged on one side, far away from the display panel, of the multilayer organic film layer;
an optical fingerprint sensor arranged on one side of the supporting layer far away from the multilayer organic film layer;
the supporting layer is provided with an opening area, at least one first through hole is arranged in the opening area, a transparent filler is arranged in the first through hole, and the first through hole is arranged opposite to the optical fingerprint sensor in the thickness direction of the flexible display module.
2. The flexible display module according to claim 1, wherein the opening region is formed by patterning the support layer, a plurality of first through holes are formed in the opening region, and the transparent filler is a transparent adhesive.
3. The flexible display module according to claim 1, wherein the first through hole is formed by drilling the support layer, the modulus of the transparent filler is not less than 1GPa, and the transparent filler is fixed to an inner wall of the first through hole by a transparent adhesive.
4. The flexible display module of claim 1, wherein the transparent filler is an organic transparent material with a modulus of 2GPa to 6GPa or an inorganic transparent material with a modulus of 50GPa to 100 GPa.
5. The flexible display module according to claim 2 or 3, wherein the plurality of organic film layers comprise a back film, an optical adhesive and a foam layer, the back film is disposed on a backlight side of the display panel, the optical adhesive is disposed on a side of the back film away from the display panel, and the foam layer is disposed between the optical adhesive and the support layer.
6. The flexible display module of claim 5, wherein a second through hole is disposed on the bubble surface layer, a lens structure is disposed in the second through hole, and the first through hole is disposed opposite to the second through hole in a thickness direction of the flexible display module.
7. The flexible display module according to claim 1, wherein the supporting layer has a bendable region, and a plurality of third through holes are disposed in the bendable region.
8. The flexible display module according to claim 1, further comprising a polarizer disposed on a light exit side of the display panel, and a cover plate disposed on a side of the polarizer away from the display panel.
9. The flexible display module of claim 1, wherein the plurality of open regions are disposed in a thickness direction of the flexible display module opposite to the optical fingerprint sensor.
10. A display device comprising the flexible display module according to any one of claims 1 to 9.
11. An electronic device comprising the display device according to claim 10.
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| CN202210113415.4A CN114495720B (en) | 2022-01-30 | 2022-01-30 | Flexible display module, display device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210113415.4A CN114495720B (en) | 2022-01-30 | 2022-01-30 | Flexible display module, display device and electronic equipment |
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| CN114495720B CN114495720B (en) | 2023-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023225965A1 (en) * | 2022-05-26 | 2023-11-30 | 京东方科技集团股份有限公司 | Display module and display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211375619U (en) * | 2019-04-22 | 2020-08-28 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN212161817U (en) * | 2020-07-08 | 2020-12-15 | 京东方科技集团股份有限公司 | Flexible display panel and display device |
| CN112086025A (en) * | 2020-09-15 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Display module, display device and manufacturing method of display module |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211375619U (en) * | 2019-04-22 | 2020-08-28 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN212161817U (en) * | 2020-07-08 | 2020-12-15 | 京东方科技集团股份有限公司 | Flexible display panel and display device |
| CN112086025A (en) * | 2020-09-15 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Display module, display device and manufacturing method of display module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023225965A1 (en) * | 2022-05-26 | 2023-11-30 | 京东方科技集团股份有限公司 | Display module and display apparatus |
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| CN114495720B (en) | 2023-12-26 |
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