CN115079462A

CN115079462A - LCM (liquid Crystal Module) display module with blind hole structure and terminal

Info

Publication number: CN115079462A
Application number: CN202210679976.0A
Authority: CN
Inventors: 张秋菊
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-20

Abstract

The invention provides an LCM (liquid crystal module) with a blind hole structure, which comprises a TFT-LCD (thin film transistor-liquid crystal display) screen, wherein an upper polarizing layer and a lower polarizing layer are respectively arranged on the upper surface and the lower surface of the TFT-LCD screen, an OCA (optical clear adhesive) layer and a CG (CG) layer are arranged above the upper polarizing layer, a BL (basic layer) is arranged below the lower polarizing layer, holes are formed in the same positions of the upper polarizing layer, the lower polarizing layer and the BL layer, the size of each hole is different, and the holes are suitable for corresponding to the position of a camera; the TFT-LCD display screen and the CG layer are arranged to be fully transparent in the area corresponding to the opening. Through this setting for the production efficiency of drilling screen is higher, and the effect is better. The invention also provides a terminal.

Description

LCM (liquid Crystal Module) display module with blind hole structure and terminal

Technical Field

The invention relates to the technical field of display screens, in particular to an LCM (liquid crystal module) display module with a blind hole structure and a terminal.

Background

In recent years, the requirement of the smart phone industry on the function of front camera shooting of the mobile phone is higher and higher, and the use of the drilling screen on the screen of the mobile phone also becomes a choice of many manufacturers because the drilling screen has higher screen occupation ratio and can ensure the camera shooting quality. The camera department on the present drilling screen mainly sets up the through-hole, the through-hole needs the display element processing to the module when drilling, do not run through at module top layer mould CG (apron), all the other main material OCA (optical cement layer), U-POL (upper polarizing layer), TFT-LCD (LCD display screen), D-POL (lower polarizing layer), BL (backlight layer) all need the trompil to run through (as figure 2), though this scheme is made a video recording clearly, but the production yield is low, the machining precision requires highly, the requirement to design and technology is very harsh, be unfavorable for the production of industrialization.

Disclosure of Invention

The invention discloses an LCM (liquid crystal module) display module with a blind hole structure and a terminal, which are simple in structure and convenient to operate and aim to solve the problems.

The invention adopts the following scheme: an LCM (liquid Crystal Module) with a blind hole structure comprises a TFT-LCD (thin film transistor-liquid Crystal display) screen, wherein an upper polarizing layer and a lower polarizing layer are respectively arranged on the upper surface and the lower surface of the TFT-LCD screen, an OCA (optical clear adhesive) layer and a CG (CG) layer are arranged above the upper polarizing layer, a BL (base layer) layer is arranged below the lower polarizing layer, holes for adapting to a camera are formed in the same positions of the upper polarizing layer, the lower polarizing layer and the BL layer, and the size of the holes of each level is different; the TFT-LCD display screen and the CG layer are arranged to be fully transparent in the area corresponding to the opening.

Further, the opening is provided in a circular shape.

Further, the TFT-LCD display screen and the area that the trompil corresponds are provided with the LCD BM layer, the LCD BM layer set up to with the ring shape of trompil concentric.

Further, the full transparent area on the CG layer is set to be circular concentric with the opening, the LCD BM layer comprises an LCD BM layer inner diameter and an LCD BM layer outer diameter, and the LCD BM layer inner diameter is smaller than the diameter of the circular full transparent area on the CG layer.

Furthermore, a circular shading ring is arranged at the opening of the BL layer.

Furthermore, the annular light-shielding ring comprises an inner diameter of the annular light-shielding ring and an outer diameter of the annular light-shielding ring, and the inner diameter of the annular light-shielding ring is the same as the diameter of the fully transparent area of the CG layer or is within the diameter range of the inner diameter of the BM layer of the LCD and the diameter range of the fully transparent area of the CG layer.

Furthermore, the opening of the upper polarizing layer is larger than the inner diameter of the annular shading ring of the BL layer and larger than the opening of the lower polarizing layer.

Furthermore, the outer diameter of the annular shading ring is the same as that of the LCD BM layer.

The invention also provides a terminal, which comprises a camera and the LCM with the blind hole structure, wherein the blind hole of the LCM is arranged right above the camera.

By adopting the technical scheme, the invention can obtain the following technical effects: according to the invention, the upper polarizing layer, the lower polarizing layer and the BL layer are provided with the holes at the same positions, and the TFT-LCD layer is subjected to full-transparent treatment, so that a blind hole structure is formed, compared with a hole structure, the production yield is greatly improved, and the production efficiency can be improved; simultaneously, the fine design is carried out on the size of the opening of each layer, so that the display screen is stable in performance and good in display effect, the problems of no bright spots, poor bright lines and the like are solved, and the service life of the mobile phone is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a hierarchical structure of an LCM module with a blind via structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a conventional through-hole LCM;

fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 4 is a partial view at I in FIG. 3;

FIG. 5 is a schematic diagram of a blind hole structure of an LCM module with a blind hole structure according to an embodiment of the present invention;

icon: the light source comprises a CG layer 10, an OCA layer 20, an upper polarizing layer 30, a TFT-LCD display screen 40, a U-LCD layer 41, a D-LCD layer 42, an LCD BM layer inner diameter 51, an LCD BM layer outer diameter 52, a lower polarizing layer 60, a BL layer 70, a circular shading ring inner diameter 71, a circular shading ring outer diameter 72 and an opening 80.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in fig. 1 and fig. 3 to fig. 5, the present embodiment provides a terminal, which includes a camera and an LCM display module with a blind hole structure, where the blind hole of the LCM display module is disposed right above the camera. In the LCM display module with the blind hole structure in this embodiment, the LCM display module includes a TFT-LCD display screen 40, an upper polarizing layer 30 and a lower polarizing layer 60 are respectively disposed on the upper and lower surfaces of the TFT-LCD display screen 40, an OCA layer 20 and a CG layer 10 are disposed above the upper polarizing layer 30, a BL layer 70 is disposed below the lower polarizing layer 60, openings 80 for adapting to cameras are disposed at the same positions of the upper polarizing layer 30, the lower polarizing layer 60, and the BL layer 70, and the openings 80 of each level are different in size; the TFT-LCD panel 40 and the CG layer 10 are disposed to be completely transparent in the region corresponding to the opening 80, and have the same shape as the opening 80.

In this embodiment, the terminal may be a mobile phone, a computer, a tablet or other device with a display screen and a camera. The openings 80 are provided in a circular shape, which is the same shape as the camera, although a circular design is only one of the design options, and in practical use, other shapes, such as a square shape, etc., are possible depending on the arrangement of the cameras.

As shown in fig. 1, in the present embodiment, the structure of the LCM display module sequentially includes: the display comprises a CG layer 10, an OCA layer 20, a U-POL layer 30, a U-LCD layer 41, a D-LCD layer 42, a D-POL layer and a BL layer 70, wherein the U-POL layer 30 and the D-POL layer respectively represent an upper polarizing layer 30 and a lower polarizing layer 60, the CG layer 10 is a protective layer, a display area of the CG layer 10 is transparent, but is not transparent in a non-display area, and an opening of the CG layer 10 is formed in the non-display area. The OCA layer 20 is an optical adhesive layer, the U-LCD layer 41 and the D-LCD layer 42 are upper and lower LCD layers of the TFT-LCD display screen 40, and the BL layer 70 is a light-shielding adhesive layer. Certainly, the LCM display module further includes structures such as IC, FPC (with SMT), ACF, and the like. The above layers are the main material layer.

As shown in fig. 5, in this embodiment, the area of the TFT-LCD panel 40 corresponding to the opening 80 is further provided with an LCD BM layer, and the LCD BM layer has a light blocking effect. The LCD BM layer is arranged in a circular ring shape concentric with the opening 80. Here, the ring-shaped LCD BM layer includes an LCD BM layer inner diameter 51 and an LCD BM layer outer diameter 52, and light of the screen can be prevented from entering the blind hole through the LCD BM layer, thereby affecting the photographing effect.

With continued reference to fig. 5, in a preferred embodiment, the fully transparent area of the CG layer 10 corresponding to the opening 80 is configured as a circle concentric with the opening 80, and the LCD BM layer inner diameter 51 is smaller than the diameter of the circular fully transparent area of the CG layer 10, which may improve the light transmittance at the opening of the CG layer 10. Furthermore, a circular ring-shaped shading ring is also arranged at the position of the opening 80 of the BL layer 70, the circular ring-shaped shading ring comprises a circular ring-shaped shading ring inner diameter 71 and a circular ring-shaped shading ring outer diameter 72, and the circular ring-shaped shading ring inner diameter 71 is the same as the diameter of the full transparent area of the CG layer 10 or is positioned between the LCD BM layer inner diameter 51 and the diameter range of the full transparent area of the CG layer 10; the outer diameter 72 of the annular shading ring is the same as the outer diameter 52 of the BM layer of the LCD. In this setting, the trompil 80 department on BL layer 70 has directly set up ring shape shading circle, and this ring shape shading circle internal diameter 71 is less than the diameter of trompil 80 to can be directly with the black circle laminating at camera edge, better realize the shooting effect, reduce the trompil aperture, improve the screen and account for the ratio. Furthermore, the opening 80 of the upper polarizing layer 30 is larger than the inner diameter of the annular shading ring of the BL layer 70 and larger than the opening 80 of the lower polarizing layer 60, and by this design, the generation of bright lines can be reduced. Through the pore size to every layer structure design, a plurality of layer structures are mutually supported, can make blind hole structure's effect better. In the invention, the minimum aperture of the blind hole is the inner diameter 51 of the LCM BM layer, and the maximum aperture is the outer diameter 52 of the LCM BM layer or the outer diameter 72 of the annular shading ring.

In the invention, on one hand, because the blind holes do not need to drill the TFT-LCD display screen 40, the process of drilling can be reduced during production, and the problem of defective rate caused by drilling can be reduced, thereby improving the production efficiency and the yield of the display screen. On the other hand, when the blind hole design is used, the open holes 80 of the main materials of each level are finely designed, the sizes of the open holes of the main materials are respectively regulated according to the shrinkage rate of the materials and the adhesion degree of glue in the open holes 80, and the open holes 80 are extremely designed. Design more meticulously to the trompil 80 of each layer part of blind hole or the internal diameter and the size of full transparent region promptly, effectively solved trompil 80 not good point when production and glued, the production yield is low to and the easy printing opacity scheduling problem of hole of making a video recording.

The upper polarizing layer 30, the lower polarizing layer 60 and the BL layer 70 are provided with the openings 80 at the same positions, and the TFT-LCD layer is subjected to full-transparent treatment, so that a blind hole structure is formed, and compared with the opening 80 structure, the production yield is greatly improved, and the production efficiency can be improved; meanwhile, the size of the opening 80 of each layer is finely designed, so that the display screen is stable in performance and good in display effect, the problems of no bright spots, poor bright lines and the like are solved, and the service life of the mobile phone is prolonged.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.

Claims

1. The LCM is characterized in that holes for adapting a camera are formed in the same positions of the upper polarizing layer, the lower polarizing layer and the BL layer, and the size of the holes of each level is different; the TFT-LCD display screen and the CG layer are arranged to be fully transparent in the area corresponding to the opening.

2. The LCM display module assembly with the blind hole structure as claimed in claim 1, wherein the opening is configured to be circular.

3. The LCM display module assembly with the blind hole structure as claimed in claim 2, wherein the TFT-LCD display screen is provided with an LCD BM layer in the area corresponding to the open hole, and the LCD BM layer is in the shape of a circular ring concentric with the open hole.

4. The LCM display module assembly with the blind hole structure as claimed in claim 3, wherein the full transparent area on the CG layer is arranged in a circle concentric with the open hole, the LCD BM layer comprises an LCD BM layer inner diameter and an LCD BM layer outer diameter, and the LCD BM layer inner diameter is smaller than the diameter of the circular full transparent area on the CG layer.

5. The LCM display module assembly as claimed in claim 4, wherein the BL layer has an annular light shielding ring at the opening.

6. The LCM with the blind hole structure as claimed in claim 5, wherein the annular light-shielding ring comprises an inner diameter and an outer diameter, and the inner diameter is the same as or between the inner diameter of the BM layer and the diameter of the transparent area of the CG layer.

7. The LCM display module as claimed in claim 6, wherein the opening of the upper polarizer layer is larger than the inner diameter of the annular shading ring of the BL layer and larger than the opening of the lower polarizer layer.

8. The LCM display module assembly as claimed in claim 6, wherein the outer diameter of the annular light shielding ring is the same as the outer diameter of the BM layer of the LCD.

9. A terminal, comprising a camera, and further comprising the LCM with the blind hole structure of any one of claims 1-8, wherein the blind hole of the LCM is disposed directly above the camera.