Polarizing plate, display screen, terminal, and method for manufacturing polarizing plate

Abstract

The present disclosure relates to a polarizing sheet, a display screen, a terminal and a manufacturing method of the polarizing sheet. The polarizing sheet (10) comprises a base layer (11) and a polarizing layer (12) attached to the base layer (11); the polarizing layer (12) comprises any two or three areas in the same plane: a first area (121), a second area (122) and a third area (123); wherein the first area (121), the second area (122) and the third area (123) have different light transmission properties. The present disclosure forms a polarizing layer on the base layer, and generates a second area and / or a third area with better light transmission properties in the polarizing layer through the manufacturing process, so that optical devices such as cameras, light sensors and the like can be arranged below the second area and / or the third area with better light transmission properties, and can work normally, thereby maximizing the working performance of the optical devices under the screen.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure relates to the technical field of display screens, in particular to a polarizing sheet, a display screen, a terminal and a manufacturing method of the polarizing sheet. BACKGROUND

[0002] The polarizing sheet is an important component of a mobile phone display screen.

[0003] In the related art, a technical concept is proposed that optical devices (such as camera, light sensor, infrared emitter, infrared receiver and the like) on the front panel of the mobile phone are arranged under the display screen, so as to release the space of the front panel of the mobile phone and improve the screen ratio.

[0004] However, due to the poor light transmission performance of the polarizing sheet, after the optical devices are arranged under the display screen, the working performance of the optical devices is affected, and even cannot work normally. SUMMARY

[0005] The embodiment of the present disclosure provides a polarizing sheet, a display screen, a terminal and a manufacturing method of the polarizing sheet, which can be used to solve the problem that due to the poor light transmission performance of the polarizing sheet, after the optical devices are arranged under the display screen, the working performance of the optical devices is affected, and even cannot work normally. The technical solution is as follows:

[0006] According to a first aspect of the embodiment of the present disclosure, a polarizing sheet is provided, which comprises a base layer and a polarizing layer attached to the base layer.

[0007] The polarizing layer comprises a combination of any two or three of the following regions in the same plane: a first region, a second region and a third region.

[0008] The first region, the second region and the third region have different light transmission performances.

[0009] Optionally, the light transmittance of the first region is less than that of the second region; and the light transmittance of the third region is between that of the first region and that of the second region.

[0010] Optionally, the polarizing layer comprises the first region and the second region; the first region has a polarizing function, and the second region does not have a polarizing function.

[0011] Optionally, the first region contains a polarizing molecular material, and the polarizing molecular material has the polarizing function; and the second region does not contain the polarizing molecular material.

[0012] Optionally, the first area contains a first polar molecule material, and the first polar molecule material has the polarizing function; and the second area contains a second polar molecule material, and the second polar molecule material does not have the polarizing function.

[0013] Optionally, the second polar molecule material is polished by CNC (Computerized Numerical Control) technology so that the polarizing function is lost; and / or,

[0014] the second polar molecule material is heated so that the polarizing function is lost; and / or,

[0015] the second polar molecule material is corroded so that the polarizing function is lost; and / or,

[0016] the second polar molecule material is arranged irregularly so that the polarizing function is lost; and / or,

[0017] the second polar molecule material is irradiated by ultraviolet light so that the polarizing function is lost.

[0018] Optionally, the polarizing layer includes the second area.

[0019] the second area is located at the top edge of the polarizing layer; and / or,

[0020] the second area is located at the left side edge of the polarizing layer; and / or,

[0021] the second area is located at the right side edge of the polarizing layer; and / or,

[0022] the second area is located at the bottom edge of the polarizing layer; and / or,

[0023] the second area is located at the middle of the polarizing layer.

[0024] Optionally, the polarizing layer includes the first area, the second area, and the third area, and the third area is located between the first area and the second area.

[0025] Optionally, the light transmittance of the second area is greater than 50%.

[0026] Optionally, the polarizing sheet further includes a TAC (triacetyl cellulose) upper film, a TAC lower film, a protective film, a pressure-sensitive adhesive, and a release film.

[0027] The polarizing sheet is a laminated structure, and from bottom to top, the release film, the pressure-sensitive adhesive, the TAC lower film, the base layer, the TAC upper film, and the protective film are sequentially arranged.

[0028] The polarizing layer is located between the base layer and the TAC upper film; and / or, the polarizing layer is located between the base layer and the TAC lower film.

[0029] Optionally, the polarizing sheet is an integrated structure, and the polarizing sheet is in a regular or irregular shape.

[0030] According to a second aspect of the embodiments of the present disclosure, a display screen is provided, which comprises the polarizing sheet according to the first aspect or any possible implementation manner of the first aspect.

[0031] According to a third aspect of the embodiments of the present disclosure, a terminal is provided, which comprises a display screen, and the display screen comprises the polarizing sheet according to the first aspect or any possible implementation manner of the first aspect.

[0032] According to a fourth aspect of the embodiments of the present disclosure, a terminal is provided, which comprises a display screen, and the display screen comprises a display panel and a polarizing sheet.

[0033] The polarizing sheet comprises a base layer and a polarizing layer attached to the base layer.

[0034] The polarizing layer comprises a first area and a second area, and the second area has better light transmission performance than the first area.

[0035] An optical device is arranged below the second area.

[0036] Optionally, the polarizing layer further comprises a third area, and the third area is located between the first area and the second area.

[0037] The third area has light transmission performance between that of the first area and that of the second area.

[0038] Optionally, the display panel comprises a substrate and a display layer above the substrate.

[0039] The display layer comprises a main display area and an auxiliary display area, and the auxiliary display area has better light transmission performance than the main display area.

[0040] The main display area corresponds to the first area, and the auxiliary display area corresponds to the second area.

[0041] The optical device is arranged below the auxiliary display area.

[0042] Optionally, the polarizing layer further comprises a third area, and the third area is located between the first area and the second area, and the third area has light transmission performance between that of the first area and that of the second area.

[0043] The display layer further comprises a transition display area, the transition display area is located between the main display area and the auxiliary display area, and the transition display area corresponds to the third area.

[0044] Optionally, the display panel is an LCD (Liquid Crystal Display) display panel, and the display screen comprises two polarizing sheets, which are an upper polarizing sheet and a lower polarizing sheet.

[0045] The upper polarizing sheet is located above the LCD display panel, and the lower polarizing sheet is located below the LCD display panel.

[0046] Optionally, the display panel is an OLED (Organic Light-Emitting Diode) display panel, and the polarizing sheet is located above the OLED display panel.

[0047] Optionally, the optical device comprises at least one of a camera, a light sensor, a proximity sensor, an optical transmitter, and an optical receiver.

[0048] According to a fifth aspect of the embodiments of the present disclosure, a manufacturing method of a polarizing sheet is provided, the method comprising:

[0049] Laying a base layer;

[0050] Manufacturing a polarizing layer on the base layer, the polarizing layer comprising a combination of any two or three of the following areas in the same plane: a first area, a second area, and a third area;

[0051] The first area, the second area, and the third area have different light transmission properties.

[0052] Optionally, the manufacturing of the polarizing layer on the base layer comprises:

[0053] Coating an impregnation liquid containing a polarizing molecular material on the base layer;

[0054] Adding a blocking layer on the base layer coated with the impregnation liquid, the blocking layer corresponding to an area comprising the second area and / or the third area;

[0055] Orienting the base layer added with the blocking layer in a magnetic field or stretching the base layer for orientation, so that the polarizing molecular material is arranged in a specified manner;

[0056] Fixing and drying the polarizing molecular material;

[0057] Removing the blocking layer to form the polarizing layer on the base layer.

[0058] Optionally, the manufacturing the polarizing layer on the base layer comprises:

[0059] adding a blocking layer on the base layer, the blocking layer corresponding to the second area and / or the third area;

[0060] coating an impregnation liquid containing polarizing molecule material on the base material with the blocking layer added;

[0061] orienting the base layer coated with the impregnation liquid in a magnetic field or stretching the base layer for orientation, so that the polarizing molecule material is arranged in a specified manner;

[0062] fixing and drying the polarizing molecule material;

[0063] removing the blocking layer to form the polarizing layer on the base layer.

[0064] Optionally, the adding a blocking layer on the base layer comprises:

[0065] coating an exposure-removable blocking layer material on the base layer;

[0066] removing the blocking layer material in the target area by exposure and / or cleaning, and retaining the blocking layer material in the remaining area except the target area, to form the blocking layer.

[0067] Optionally, the blocking layer comprises a frame in a grid shape, and a protrusion in a cell contained in the frame, the protrusion being connected with the frame.

[0068] Optionally, the removing the blocking layer comprises:

[0069] tearing off the blocking layer; and / or, removing the blocking layer by cleaning; and / or, removing the blocking layer by exposure.

[0070] Optionally, the manufacturing the polarizing layer on the base layer comprises:

[0071] coating an impregnation liquid containing polarizing molecule material on the base layer;

[0072] orienting the base layer coated with the impregnation liquid in a magnetic field or stretching the base layer for orientation, so that the polarizing molecule material is arranged in a specified manner;

[0073] fixing and drying the polarizing molecule material to obtain the polarizing layer;

[0074] A specified region in the polarizing layer is processed so that the specified region does not have or weakens the polarizing function, and the specified region includes the second region and / or the third region.

[0075] Optionally, the processing of the specified region in the polarizing layer includes:

[0076] The polarizing molecule material in the specified region is ground away by using a CNC technology; and / or, the polarizing function of the polarizing molecule material in the specified region is destroyed by using a local heating method; and / or, the polarizing function of the polarizing molecule material in the specified region is destroyed by using a local corrosion method; and / or, the polarizing function of the polarizing molecule material in the specified region is destroyed by using a magnetic field application method; and / or, the polarizing function of the polarizing molecule material in the specified region is destroyed by using an ultraviolet irradiation method.

[0077] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0078] The polarizing sheet provided by the embodiments of the present disclosure forms a polarizing layer on a base layer, and generates a second region and / or a third region with good light transmission performance in the polarizing layer through a manufacturing process, so that optical devices such as cameras, light sensors, etc. can be arranged below the second region and / or the third region with good light transmission performance, and can work normally, thereby ensuring the working performance of the optical devices under the screen to the greatest extent.

[0079] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0080] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0081] Figure 1 is a schematic diagram of a polarizing sheet according to an exemplary embodiment;

[0082] Figure 2 is Figure 1 is a schematic diagram of a polarizing layer of the polarizing sheet shown in FIG. 1;

[0083] Figures 3 to 7 Exemplary schematic diagrams of several polarizing layers are shown;

[0084] Figure 8 is a schematic diagram of a polarizing sheet according to another exemplary embodiment;

[0085] Figure 9 is Figure 8A schematic view of a polarizing layer of a polarizing sheet is shown.

[0086] Figure 10 A schematic view of a layer structure of a polarizing sheet is shown.

[0087] Figure 11 A schematic view of a display screen is shown according to an example embodiment.

[0088] Figure 12 A schematic view of a terminal is shown according to an example embodiment.

[0089] Figure 13 A schematic view of a display panel is shown.

[0090] Figure 14 A flow chart of a manufacturing method of a polarizing sheet is shown according to an example embodiment.

[0091] Figure 15 A schematic view of a manufacturing flow of a polarizing layer is shown.

[0092] Figure 16 A schematic view of a barrier layer is shown.

[0093] Figure 17 A schematic view of another barrier layer is shown. DETAILED DESCRIPTION

[0094] The example embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context of use indicates otherwise. The following description of example embodiments is not representative of all embodiments consistent with the present disclosure. Rather, it is merely an example of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0095] Figure 1 A schematic view of a polarizing sheet is shown according to an example embodiment. As shown, the polarizing sheet 10 includes a base layer 11 and a polarizing layer 12 attached to the base layer 11. Figure 1

[0096] The polarizing sheet 10 is in a layer structure. The base layer 11 is configured to support the polarizing layer 12. The polarizing layer 12 is configured to perform a polarizing function. Optionally, the polarizing layer 12 is on the base layer 11, i.e., the polarizing layer 12 is attached to the upper surface of the base layer 11, and / or the polarizing layer 12 is under the base layer 11, i.e., the polarizing layer 12 is attached to the lower surface of the base layer 11.

[0097] ​In the embodiments of the present disclosure, the polarizing layer 12 includes any two or three regions in the same plane in combination: the first region, the second region, and the third region. Among them, the first region, the second region, and the third region have different light transmission performance. For example, after the same light ray passes through the first region, the second region, and the third region, the wavelength, amplitude, or phase of the outgoing light ray is different.

[0098] Optionally, the light transmission performance represents the ability of light transmission through the medium, and the light transmission performance is represented by the light transmittance. The light transmittance is the percentage of the light flux that passes through the medium (such as the first region, the second region, and the third region in the embodiments of the present disclosure) to the incident light flux. The light transmittance can also be referred to as the transmittance.

[0099] Optionally, the light transmittance of the first region is less than the light transmittance of the second region; and the light transmittance of the third region is between the light transmittance of the first region and the light transmittance of the second region. For example, the light transmittance of the first region is less than a first threshold, and the light transmittance of the second region is greater than a second threshold. Among them, the first threshold and the second threshold are equal, for example, the first threshold and the second threshold are both 50%, the light transmittance of the first region is less than 50%, and the light transmittance of the second region is greater than 50%. Alternatively, the first threshold is less than the second threshold, for example, the first threshold is 50%, and the second threshold is 60%, the light transmittance of the first region is less than 50%, and the light transmittance of the second region is greater than 60%.

[0100] In the embodiments of the present disclosure, the first region refers to a part of the polarizing layer 12 that has a polarizing function. In the case that the polarizing layer 12 includes the first region, the polarizing layer 12 can include one first region or multiple first regions. The above-mentioned polarizing function can mean that only light in a certain direction is allowed to pass through, such as only light in the 90-degree direction is allowed to pass through, and light in other directions in 360 degrees is not allowed to pass through; or it can also mean that only light in the direction within the range of [a, b] is allowed to pass through, and the difference between a and b is not greater than a first threshold, such as the first threshold is 5 degrees, for example, only light in the direction within [0, 5] degrees is allowed to pass through, and light in other directions in 360 degrees is not allowed to pass through.

[0101] The second region refers to a part of the polarizing layer 12 without a polarizing function. In the case of including the second region in the polarizing layer 12, the polarizing layer 12 can include one second region or multiple second regions. The above-mentioned without a polarizing function can refer to no polarizing function at all, that is, allowing light in all directions of 360 degrees to pass through; or can refer to having a certain polarizing function, but the polarizing function is poor, for example, allowing light in the direction within the range of [c, d] to pass through, and the difference between c and d is not less than a second threshold value, which is greater than or equal to the above-mentioned first threshold value, for example, the second threshold value is 30 degrees, for example, allowing light in the direction of [0, 30] degrees to pass through, and light in other directions of 360 degrees except the direction of [0, 30] degrees is not allowed to pass through.

[0102] The third region refers to a part of the polarizing layer 12 with a polarizing function, but the polarizing function is destroyed. That is, the polarizing function of the third region can be between the first region and the second region, the polarizing function of the third region is poorer than the first region but better than the second region; or, a part of the third region has a polarizing function, and another part of the third region does not have a polarizing function. In the case of including the third region in the polarizing layer 12, the polarizing layer 12 can include one third region or multiple third regions. Optionally, the third region is located between the first region and the second region, and is a transition region between the first region and the second region.

[0103] In the embodiments of the present disclosure, the polarizing function is realized by a polarizing molecular material, for example, the polarizing molecular material can be an iodine molecular material, or other molecular materials with a polarizing property.

[0104] In one example, in combination with reference to Figure 1 and Figure 2The polarizing layer 12 includes a first region 121 and a second region 122. The first region 121 has a transmittance less than that of the second region 122. The first region 121 has a polarizing function, and the second region 122 does not have a polarizing function. In one possible implementation, the first region 121 includes a polarizing molecular material, and the polarizing molecular material has a polarizing function. The second region 122 does not include the polarizing molecular material. For example, the first region 121 includes iodine molecular material having a polarizing function, and the iodine molecular material is arranged in a specified manner. The second region 122 does not include the iodine molecular material, and thus does not have a polarizing function. In another possible implementation, the first region 121 includes a first polarizing molecular material, and the first polarizing molecular material has a polarizing function. The second region 122 includes a second polarizing molecular material, and the second polarizing molecular material does not have a polarizing function. For example, the first region 121 includes iodine molecular material having a polarizing function, and the iodine molecular material is arranged in a specified manner. The second region 122 also includes iodine molecular material having a polarizing function, but the iodine molecular material is not arranged in a specified manner, and thus does not have a polarizing function. The second polarizing molecular material does not have a polarizing function in at least one of the following manners, but not limited to: the second polarizing molecular material is polished by CNC technology so that the polarizing function is lost, the second polarizing molecular material is heated so that the polarizing function is lost, the second polarizing molecular material is corroded so that the polarizing function is lost, the second polarizing molecular material is not arranged in an orderly manner so that the polarizing function is lost, the second polarizing molecular material is irradiated by ultraviolet light so that the polarizing function is lost. In addition, the second region 122 is located at a top edge position of the polarizing layer 12 (as shown in Figure 2 ), and / or the second region 122 is located at a left side edge position of the polarizing layer 12 (as shown in Figure 3 ), and / or the second region 122 is located at a right side edge position of the polarizing layer 12 (as shown in Figure 4 ), and / or the second region 122 is located at a bottom edge position of the polarizing layer 12 (as shown in Figure 5 ), and / or the second region 122 is located at a middle position of the polarizing layer 12 (as shown in Figure 6 ).

[0105] In the examples provided in the above Figures 1 to 6 , only the polarizing layer 12 includes one first region 121 and one second region 122 is taken as an example. In some other possible examples, the polarizing layer 12 can further include a plurality of first regions 121 and / or a plurality of second regions 122. As shown in Figure 7 , several schematic diagrams of the polarizing layer 12 are exemplarily shown.

[0106] Optionally, the size of the first region 121 is larger than the size of the second region 122. The first region 121 can be in a regular or irregular shape, and there is at least one gap, and the gap is the second region 122. For example, as shown in Figure 2 the first region 121 is in a rectangular shape and there is one gap, and the gap is the second region 122. In addition, in the embodiments of the present disclosure, the shape of the cut surface of the second region 122 is not limited, which can be a regular shape such as a rectangle, a rounded rectangle, a circle, a semicircle, etc., or an irregular shape such as a water drop shape, an arc shape, etc.

[0107] In another example, in combination with reference to Figure 8 and Figure 9 , the polarizing layer 12 includes the first region 121, the second region 122, and the third region 123. The third region 123 is located between the first region 121 and the second region 122, and serves as a transition region between the first region 121 and the second region 122. The light transmittance of the first region 121 is less than that of the second region 122, and the light transmittance of the third region 123 is between that of the first region 121 and that of the second region 122. The first region 121 has a polarizing function, and the second region 122 does not have a polarizing function. The third region 123 has a polarizing function, but the polarizing function is destroyed. That is, the polarizing function of the third region 123 can be between that of the first region 121 and that of the second region 122, the polarizing function of the third region 123 is worse than that of the first region 121 but better than that of the second region 122; or, a part of the third region 123 has a polarizing function, and another part does not have a polarizing function.

[0108] In addition, in the embodiments of the present disclosure, the polarizing sheet 10 is in an integrated structure, that is, the base layer 11 of the polarizing sheet 10 is in an integrated structure, and the different types of regions included in the polarizing layer 12 are formed on a complete base layer 11. The base layer 11 can be a PVA (polyvinyl alcohol) film, which has the characteristics of high transparency, high ductility, good iodine adsorption, good film forming properties, etc.

[0109] In addition, the polarizing sheet 10 is in a regular or irregular shape. For example, the polarizing sheet 10 can be in a regular shape such as a rectangle, a rounded rectangle, a circle, etc., or in some other irregular shape.

[0110] Optionally, in addition to the base layer 11 and the polarizing layer 12 introduced above, the polarizing sheet 10 further includes at least one of the following: a TAC film, a protective film, a PSA (pressure sensitive adhesive), a release film. In one example, as shown in Figure 10As shown, it exemplarily shows a schematic diagram of a layer structure of a polarizing sheet 10, from bottom to top, in turn, a release film 13, a pressure-sensitive adhesive 14, a TAC lower film 15, a PVA film 16, a TAC upper film 17 and a protective film 18, wherein the PVA film 16 is the base layer 11 introduced above, and the PVA film 16 is formed with the polarizing layer 12 introduced above. The polarizing layer 12 is located between the PVA film 16 and the TAC upper film 17, and / or between the PVA film 16 and the TAC lower film 15. Of course, Figure 10 Only a layer structure of the polarizing sheet 10 is exemplarily shown, in some other possible embodiments, the polarizing sheet 10 can increase, reduce or replace one or more layers according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0111] In addition, for the properties and functions of each layer of the polarizing sheet 10, please refer to the following Table-1 for introduction and explanation:

[0112] Table-1

[0113]

[0114]

[0115] It should be noted that the polarizing sheet 10 provided by the embodiments of the present disclosure is suitable for various types of display screens, including but not limited to LCD or OLED display screens, such as rigid AMOLED (Active-matrix Organic Light-Emitting Diode) display screens, flexible AMOLED display screens, etc.

[0116] It should be further noted that in the embodiments of the present disclosure, the polarizing layer 12 mainly includes the first area 121 and the second area 122, and the polarizing layer 12 includes the first area 121, the second area 122 and the third area 123 are taken as examples for introduction and explanation. In some other possible embodiments, the polarizing layer 12 can include any two or three areas of the combination of the first area 121, the second area 122 and the third area 123, for example, the polarizing layer 12 includes the first area 121 and the third area 123, and the embodiments of the present disclosure are not limited thereto.

[0117] In summary, the polarizing sheet provided by the embodiments of the present disclosure forms a polarizing layer on the base layer, and generates a second area and / or a third area with better light transmission performance in the polarizing layer through the manufacturing process, so that optical devices such as cameras, light sensors, etc. can be arranged below the second area and / or the third area with better light transmission performance, and can work normally, and the working performance of the optical devices under the screen is maximally ensured.

[0118] An example embodiment of the present disclosure also provides a display screen, which comprises the polarizer as described above. Optionally, as Figure 11 shown in FIG. 1, the display screen 1 comprises a polarizer 10 and a display panel 20.

[0119] The display panel 20 functions to display images, and can be an LCD display panel, an OLED display panel, or other types of display panels, which are not limited in the present disclosure.

[0120] The polarizer 10 functions to filter light, so as to ensure that the display panel 20 can display images.

[0121] The number of polarizers 10 required by different types of display screens can also be different. For example, when the display screen 1 is an LCD (i.e., the display panel 20 is an LCD display panel), the LCD comprises two polarizers 10, one of which is located below the LCD display panel (referred to as a lower polarizer), and the other of which is located above the LCD display panel (referred to as an upper polarizer). For another example, when the display screen 1 is an OLED display screen (i.e., the display panel 20 is an OLED display panel), the OLED display screen comprises one polarizer 10, which is located above the OLED display panel.

[0122] An example embodiment of the present disclosure also provides a terminal, which can be an electronic device such as a mobile phone, a tablet computer, an e-book reader, a multimedia playing device, a wearable device, a vehicle-mounted terminal, etc. The terminal comprises a display screen, which comprises the polarizer as described above.

[0123] In an example, as Figure 12 shown in FIG. 2, the terminal 2 comprises a display screen 1, which comprises a display panel and a polarizer (not shown in FIG. 2). The polarizer is located above the display panel, for example, the polarizer is attached to the display panel. Figure 12

[0124] The polarizer comprises a base layer and a polarizing layer attached to the base layer. As Figure 12 shown in FIG. 3, the polarizing layer comprises a first region 121 and a second region 122, and the light transmission performance of the second region 122 is better than that of the first region 121. Optionally, the polarizing layer further comprises a third region. For the description of the polarizer, please refer to the above embodiments, which will not be repeated here.

[0125] Optionally, as Figure 13 shown in FIG. 4, which schematically shows a display panel 20. The display panel 20 comprises a substrate 21 and a display layer 22 located above the substrate 21.

[0126] ​The display layer 22 is configured to display images. Optionally, the display layer 22 includes a main display area 221 and an auxiliary display area 222. Both the main display area 221 and the auxiliary display area 222 are configured to display images. The number of auxiliary display areas 222 can be one or more. Figure 13 In the embodiment, the number of auxiliary display areas 222 is one. The display layer 22 includes two types of display areas, i.e., the main display area 221 and the auxiliary display area 222. However, the main display area 221 and the auxiliary display area 222 are physically integrated as a whole, i.e., the display layer 22 is an integrated structure and is not divided into multiple independent components.

[0127] If the display layer 22 includes multiple independent components and the components are spliced to form the display layer 22, there must be a gap at the splicing position, which results in a gap between the display contents of the components and cannot achieve the display effect that the display contents of the entire display layer 22 are integrated and gapless. However, in the embodiment, the main display area 221 and the auxiliary display area 222 are physically integrated as a whole and there is no gap between them. Therefore, there is no gap between the display contents of the main display area 221 and the auxiliary display area 222, and the display effect that the display contents of the entire display layer 22 are integrated and gapless is achieved.

[0128] In addition, the substrate 21 is an integrated structure, i.e., the main display area 221 and the auxiliary display area 222 are formed on one substrate. If the first substrate area corresponding to the main display area 221 and the second substrate area corresponding to the auxiliary display area 222 are made of the same material, the substrate 21 is an integrated substrate made of the same material. If the first substrate area corresponding to the main display area 221 and the second substrate area corresponding to the auxiliary display area 222 are made of different materials, the first substrate area and the second substrate area can be spliced by using a related process and the splicing position is gapless, so that the substrate 21 is an integrated structure.

[0129] Optionally, the auxiliary display area 222 has a better light transmittance than the main display area 221. For example, the auxiliary display area 222 has a higher light transmittance than the main display area 221. The light transmittance of the auxiliary display area 222 can be improved by a related manufacturing process. For example, the light emitting control devices (such as driving circuit, TFT (Thin Film Transistor), holding capacitor, etc.) of the sub-pixels in the auxiliary display area 222 are arranged outside the auxiliary display area 222, so that the light transmittance of the auxiliary display area 222 can be improved. For another example, at least one sub-pixel sequence is formed in the auxiliary display area 222, each of the at least one sub-pixel sequence includes at least two sub-pixels, and the colors of the sub-pixels in any one of the at least one sub-pixel sequence are the same. In this way, the sub-pixels of the same color can share the same wire, the number of wires in the auxiliary display area 222 can be reduced, the wire layout is optimized, the number of light emitting control devices such as holding capacitor and TFT in the auxiliary display area 222 is reduced, and thus the light transmittance of the auxiliary display area 222 is improved. For another example, the size of the sub-pixels in the auxiliary display area 222 is greater than the size of the sub-pixels in the main display area 221, so that the pixel distribution density in the auxiliary display area 222 is less than the pixel distribution density in the main display area 221. In this way, the number of wires in the auxiliary display area 222 can be reduced as much as possible, the wire layout is optimized, the PDL (Pixel Delineation Layer) between the pixels becomes a regular large block shape as much as possible, and the light transmittance of the light transmittance area (including the area occupied by the sub-pixels and the PDL) in the auxiliary display area 222 is improved.

[0130] Optionally, the main display area 221 corresponds to the first area 121, and the auxiliary display area 222 corresponds to the second area 122. That is, the main display area 221 has the same or similar size and shape as the first area 121, and the projection area of the main display area 221 along the direction perpendicular to the display screen coincides with the projection area of the first area 121 along the direction perpendicular to the display screen. The auxiliary display area 222 has the same or similar size and shape as the second area 122, and the projection area of the auxiliary display area 222 along the direction perpendicular to the display screen coincides with the projection area of the second area 122 along the direction perpendicular to the display screen.

[0131] Optionally, if the polarizing layer also includes a third region, the display layer may further include a transition display area located between the main display area and the auxiliary display area, and corresponding to the third region. That is, the transition display area and the third region have the same or similar size and shape, and the projection area of ​​the transition display area perpendicular to the display screen direction coincides with the projection area of ​​the third region perpendicular to the display screen direction. The transition display area has a different pixel distribution pattern than the main display area and the auxiliary display area. For example, the size of the sub-pixels in the transition display area is larger than the size of the sub-pixels in the main display area and smaller than the size of the sub-pixels in the auxiliary display area. The sizes of the sub-pixels in the transition display area can be the same or different. For example, the sub-pixels closer to the auxiliary display area are larger, and the sub-pixels closer to the main display area are smaller. Through this method, the resolution transition between the main display area and the auxiliary display area can be smoother and more natural, improving the overall display effect of the terminal screen.

[0132] In this embodiment of the present disclosure, an optical device is disposed below the second region 122. Figure 12 (Not shown in the image). Optical devices refer to functional devices that need to receive and / or emit light during operation. Optical devices include, but are not limited to, at least one of the following: a camera, a light sensor, a proximity sensor, an optical transmitter, and an optical receiver. Optionally, when the display layer of the display panel includes an auxiliary display area corresponding to the second area, the optical device is disposed below the auxiliary display area.

[0133] Furthermore, considering the small distance between the display layer and the substrate (e.g., only 0.1 mm), it is unlikely that the optical components could be placed between the display layer and the substrate. Alternatively, the optical components can be placed below the substrate, meaning they are stacked with the display screen and do not occupy space. Of course, in some possible examples, if the thickness of the optical components is small, they may also be placed between the display layer and the substrate; this disclosure does not limit this.

[0134] The display screen provided in this embodiment can be an LCD display screen or an OLED display screen. When the display screen is an OLED display screen, it can be a flexible display screen or a non-flexible display screen.

[0135] When the display screen is an LCD display screen, the display layer of the LCD display panel can include a TFT array, a liquid crystal layer, and a CF (Color Filter) arranged in sequence from bottom to top. The substrate located below the display layer can be made of glass material, and the substrate can be referred to as a lower substrate; an upper substrate is usually further arranged above the display layer, and the upper substrate can also be made of glass material. In addition, a lower polarizer can be further arranged below the lower substrate, and an upper polarizer can be further arranged above the upper substrate. In addition, the LCD display screen further includes a backlight module located below the lower polarizer.

[0136] When the display screen is an OLED display screen, the display layer of the OLED display panel can include an ITO (indium tin oxide) anode, a hole transport layer, an organic light-emitting layer, an electron transport layer, and a metal cathode arranged in sequence from bottom to top. The substrate located below the display layer can be made of glass material, plastic material, metal foil, or other materials. An upper polarizer is arranged above the OLED display panel.

[0137] Of course, the above introduction of the hierarchical structure of the LCD display screen and the OLED display screen is only exemplary and explanatory, and does not constitute a limitation on the technical solutions of the present disclosure.

[0138] In the embodiments of the present disclosure, by arranging the optical device below the display screen, the space of the front panel of the terminal can be released, and the screen ratio of the terminal can be improved, so that the screen ratio can be closer to or even reach 100%. In addition, by arranging the optical device below the second region of the polarizing layer, since the light transmission performance of the second region is better, the working performance of the optical device below the screen can be ensured to the greatest extent.

[0139] Next, the manufacturing method of the polarizer provided by the present disclosure will be introduced and described through several exemplary embodiments. As shown in FIG. 13, an exemplary flowchart of a manufacturing method of a polarizer is shown, and the method is used for manufacturing the polarizer introduced above. The method can include the following steps (steps 1401-1402): Figure 14

[0140] In step 1401, a base layer is laid.

[0141] Optionally, the base layer is a PVA film. The base layer can be used to manufacture one polarizer, or can be used to manufacture multiple polarizers. When the base layer is used to manufacture multiple polarizers, multiple polarizers can be obtained through cutting, trimming, or the like.

[0142] ​In step 1402, a polarizing layer is manufactured on the base layer, the polarizing layer including any two or three regions of the following in the same plane: the first region, the second region, and the third region; wherein the first region, the second region, and the third region have different light transmission properties.

[0143] The polarizing layer and the different types of regions in the polarizing layer are described above in the embodiments, and will not be repeated here.

[0144] As shown in FIG. 16, the PVA film 16 is dyed to adsorb polarizing molecule material 19 having a dichroic absorption function. The PVA film 16 is stretched to order the polarizing molecule material 19 on the PVA film 16, and then the polarizing molecule material 19 is fixed and dried to form a polarizing layer having uniform dichroic absorption properties. The transmission axis of the polarizing layer is perpendicular to the stretching direction. Optionally, the polarizing molecule material 19 is iodine molecule material. Figure 15

[0145] In one possible implementation, the polarizing layer is manufactured on the base layer as follows:

[0146] 1. The base layer is coated with an impregnating solution containing polarizing molecule material;

[0147] 2. A blocking layer is added to the base layer coated with the impregnating solution, the corresponding region of the blocking layer including the second region and / or the third region;

[0148] 3. The base layer with the added blocking layer is oriented in a magnetic field or stretched to orient the base layer, so that the polarizing molecule material is arranged in a specified manner;

[0149] 4. The polarizing molecule material is fixed and dried;

[0150] 5. The blocking layer is removed to form the polarizing layer on the base layer.

[0151] In this embodiment, by adding the blocking layer to the base layer coated with the impregnating solution, the polarizing molecule material under the blocking layer is squeezed out by the blocking layer, so that the region covered by the blocking layer does not include polarizing molecule material or only a small amount of polarizing molecule material, thereby manufacturing a polarizing layer containing the second region and / or the third region. In addition, the region of the base layer coated with the impregnating solution that is not covered by the blocking layer will become the first region in the polarizing layer.

[0152] As shown in FIG. 17, the PVA film 16 is dyed to adsorb polarizing molecule material 19 having a dichroic absorption function. The PVA film 16 is stretched to order the polarizing molecule material 19 on the PVA film 16, and then the polarizing molecule material 19 is fixed and dried to form a polarizing layer having uniform dichroic absorption properties. The transmission axis of the polarizing layer is perpendicular to the stretching direction. Optionally, the polarizing molecule material 19 is iodine molecule material. Figure 16 ​As shown, the exemplary embodiment shows a schematic diagram of a blocking layer. The blocking layer 30 includes a frame 31 in a grid shape, and a protrusion 32 in the grid contained in the frame 31, which is connected with the frame 31. The frame 31 contains a plurality of grids, each of which corresponds to a polarizing sheet. The shape and size of the grid can be designed according to the shape and size requirements of the polarizing sheet to be manufactured. As shown, the area corresponding to the protrusion 32 in the grid will become the second area and / or the third area in the polarizing layer, and the area outside the protrusion 32 in the grid will become the first area in the polarizing layer. The material of the blocking layer 30 can be a film, plastic or other easily removable material. Figure 16 As shown, the area corresponding to the protrusion 32 in the grid will become the second area and / or the third area in the polarizing layer, and the area outside the protrusion 32 in the grid will become the first area in the polarizing layer. The material of the blocking layer 30 can be a film, plastic or other easily removable material.

[0153] In addition, the way to remove the blocking layer includes but is not limited to any of the following: tearing off the blocking layer, removing the blocking layer by cleaning, removing the blocking layer by exposure. For example, when the blocking layer is made of a film, plastic or other easily removable material, the tearing method can be used to remove the blocking layer; for another example, when the blocking layer is made of an exposure material, the exposure, cleaning and other methods can be used to remove the blocking layer.

[0154] In addition, in the process of orienting the polarizing molecular material, if the stretching base layer method is used, the shape of the base layer will change. In one way, the blocking layer can be added before the base layer is stretched, and then the blocking layer and the base layer are stretched together. In this case, the amount of deformation of the blocking layer before and after stretching needs to be considered in advance, so that the shape and size of the stretched blocking layer meet the requirements of the polarizing sheet to be produced; in another way, the blocking layer can be added after the base layer is stretched, so that the blocking layer does not need to be stretched.

[0155] In another possible embodiment, the following method is used to manufacture the polarizing layer on the base layer:

[0156] 1. Add a blocking layer to the base layer, which corresponds to the second area and / or the third area;

[0157] 2. Apply an impregnation liquid containing a polarizing molecular material to the base material with the added blocking layer;

[0158] 3. Orient the base layer with the applied impregnation liquid in a magnetic field or stretch the base layer to orient, so that the polarizing molecular material is arranged in a specified manner;

[0159] 4. Fix and dry the polarizing molecular material;

[0160] 5. Remove the blocking layer to form a polarizing layer on the base layer.

[0161] In this embodiment, the order of the first two steps is changed compared to the previous embodiment. The barrier layer used in this embodiment can also be made of a film, plastic or other material that is easily removed, as shown in Figure 16

[0162] In some other embodiments, the barrier layer can also be made of a material that can be exposed. For example, as shown in Figure 17 Figure 17 The barrier layer is added to the base layer in the following way: a material that can be removed by exposure (such as Figure 17 is applied to the base layer 11, and the barrier layer material in the target area is removed by exposure and / or cleaning, while the barrier layer material in the remaining area 40 (the area shown in the circle in

[0163] In yet another possible embodiment, the polarizing layer is made on the base layer in the following way:

[0164] 1. An impregnating solution containing polarizing molecule material is applied to the base layer;

[0165] 2. The base layer with the impregnating solution is oriented in a magnetic field or stretched to orient the base layer, so that the polarizing molecule material is arranged in a specified way;

[0166] 3. The polarizing molecule material is fixed and dried to obtain the polarizing layer;

[0167] 4. The specified area in the polarizing layer is treated so that the specified area does not have or has weakened polarizing function, and the specified area includes the second area and / or the third area.

[0168] Optionally, the specified area in the polarizing layer is treated in any one of the following ways or a combination of multiple ways: (1) the polarizing molecule material in the specified area is ground away using CNC technology; (2) the polarizing function of the polarizing molecule material in the specified area is destroyed using local heating; (3) the polarizing function of the polarizing molecule material in the specified area is destroyed using local corrosion; (4) the polarizing function of the polarizing molecule material in the specified area is destroyed by applying a magnetic field; (5) the polarizing function of the polarizing molecule material in the specified area is destroyed by ultraviolet irradiation.

[0169] ​​In addition, after the third step, a plurality of polarizing sheets can be obtained by cutting, trimming, etc., and then the specified area in each polarizing sheet is processed so that the specified area does not have or weakens the polarizing function; or, in the form of a large polarizing sheet roll, the specified area in the polarizing layer is processed so that the specified area does not have or weakens the polarizing function, and then a plurality of polarizing sheets are obtained by cutting, trimming, etc.

[0170] Of course, the above-mentioned manufacturing method of the polarizing sheet mainly introduces the manufacturing process of the polarizing layer, and the polarizing sheet can also include a TAC film, a protective film, a pressure-sensitive adhesive, a release film, etc., which can be added according to actual production and manufacturing needs, and the embodiments of the present disclosure do not limit this.

[0171] In summary, the manufacturing method of the polarizing sheet provided by the embodiments of the present disclosure forms a polarizing layer on a base layer and generates a second area and / or a third area with good light transmission performance in the polarizing layer through a manufacturing process, so that optical devices such as cameras, light sensors, etc. can be arranged below the second area and / or the third area with good light transmission performance, and can work normally, thereby maximizing the working performance of the optical devices under the screen.

[0172] In addition, the embodiments of the present disclosure provide various manufacturing processes of the polarizing layer, which can be flexibly selected according to actual production and manufacturing needs.

[0173] It should be understood that "a plurality of" referred to herein means two or more. "And / or", which describes the association relationship of the associated objects, means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0174] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and practice of the disclosed application. The present application is intended to cover any variations, uses, or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the art that are not disclosed by the present disclosure. The specification and examples are only considered as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0175] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A polarizing sheet, characterized by, The polarizing sheet comprises a base layer and a polarizing layer attached to the base layer, the base layer is used to carry the polarizing layer; The polarizing layer comprises a first region, a second region and a third region in the same plane, the third region is located between the first region and the second region as a transition region between the first region and the second region; Wherein, the first region, the second region and the third region have different light transmission performance, the light transmittance of the first region is less than that of the second region, and the light transmittance of the third region is between the first region and the second region; The first region has a polarizing function, the second region does not have a polarizing function, and the third region has a polarizing function, but the polarizing function of the third region is destroyed.

2. The polarizing sheet according to claim 1, wherein the first region contains polarizing molecular material, and the polarizing molecular material has the polarizing function; The second region does not contain the polarizing molecular material.

3. The polarizing sheet according to claim 1, wherein the first region contains first polarizing molecular material, and the first polarizing molecular material has the polarizing function; The second region contains second polarizing molecular material, and the second polarizing molecular material does not have the polarizing function.

4. The polarizing sheet according to claim 3, wherein the second polarizing molecular material is polished by computer numerical control (CNC) technology so that the polarizing function is disabled; and / or, the second polarizing molecular material is heated so that the polarizing function is disabled; and / or, the second polarizing molecular material is corroded so that the polarizing function is disabled; and / or, the second polarizing molecular material is arranged irregularly so that the polarizing function is disabled; and / or, the second polarizing molecular material is irradiated by ultraviolet light so that the polarizing function is disabled.

5. The polarizing sheet according to claim 1, wherein the second region is located at the top edge of the polarizing layer; and / or, the second region is located at the left side edge of the polarizing layer; and / or, the second region is located at the right side edge of the polarizing layer; and / or, the second region is located at the bottom edge of the polarizing layer; and / or, the second region is located at the middle of the polarizing layer. The light transmittance of the second region is greater than 50%. The polarizing sheet further comprises a TAC upper film, a TAC lower film, a protective film, a pressure-sensitive adhesive and a release film; The polarizing sheet is a laminated structure, from bottom to top, the release film, the pressure-sensitive adhesive, the TAC lower film, the base layer, the TAC upper film and the protective film are sequentially arranged; The polarizing layer is located between the base layer and the TAC upper film; and / or, the polarizing layer is located between the base layer and the TAC lower film. The polarizing sheet is an integrated structure, and the polarizing sheet is in a regular or irregular shape. The display screen comprises the polarizing sheet according to any one of claims 1 to 8. The terminal comprises a display screen, and the display screen comprises the polarizing sheet according to any one of claims 1 to 8. ​ ​ ​ ​ ​ 6. The polarizing sheet according to claim 1, wherein ​ 7. The polarizing sheet according to claim 1, wherein ​ ​ ​ 8. The polarizing sheet according to claim 1, wherein ​ 9. A display screen, characterized by ​ 10. A terminal, characterized by comprising: ​ 11. A terminal, characterized by comprising: The terminal comprises a display screen, the display screen comprising a display panel and a polarizer; The polarizer comprises a base layer and a polarizing layer attached to the base layer, the base layer being used to carry the polarizing layer; The polarizing layer comprises a first area, a second area and a third area in the same plane, the third area being located between the first area and the second area as a transition area between the first area and the second area; The second area has better light transmission performance than the first area, the first area, the second area and the third area have different light transmission performances, the first area has a lower light transmission rate than the second area, and the third area has a light transmission rate between the first area and the second area; The first area has a polarizing function, the second area does not have a polarizing function, and the third area has a polarizing function, but the polarizing function of the third area is destroyed; The second area is provided with an optical device below.

12. The terminal according to claim 11, characterized by The display panel comprises a substrate and a display layer above the substrate; The display layer comprises a main display area and an auxiliary display area, and the auxiliary display area has better light transmission performance than the main display area; The main display area corresponds to the first area, and the auxiliary display area corresponds to the second area; The optical device is arranged below the auxiliary display area.

13. The terminal according to claim 12, wherein The polarizing layer further comprises a third area between the first area and the second area, and the third area has light transmission performance between the first area and the second area; The display layer further comprises a transition display area between the main display area and the auxiliary display area, and the transition display area corresponds to the third area.

14. The terminal according to claim 11, characterized by The display panel is an LCD display panel, and the display screen comprises two polarizers, namely an upper polarizer and a lower polarizer; The upper polarizer is located above the LCD display panel, and the lower polarizer is located below the LCD display panel.

15. The terminal according to claim 11, wherein The display panel is an OLED display panel, and the polarizer is located above the OLED display panel.

16. The terminal according to claim 11, wherein The optical device comprises at least one of a camera, a light sensor, a proximity sensor, an optical transmitter and an optical receiver.

17. A method for manufacturing a polarizing plate, characterized by comprising the steps of: The method comprises: Laying a base layer; Manufacturing a polarizing layer on the base layer, the polarizing layer comprising a first area, a second area and a third area in the same plane, the third area being located between the first area and the second area as a transition area between the first area and the second area; wherein the first area, the second area and the third area have different light transmission performances, the first area has a lower light transmission rate than the second area, and the third area has a light transmission rate between the first area and the second area; the first area has a polarizing function, the second area does not have a polarizing function, and the third area has a polarizing function, but the polarizing function of the third area is destroyed.

18. The method of claim 17, wherein, The manufacturing of the polarizing layer on the base layer comprises: coating an impregnating liquid containing polarizing molecular material on the base layer; adding a barrier layer on the base layer coated with the impregnating liquid, the barrier layer corresponding to the second area and / or the third area; orienting the base layer added with the barrier layer in a magnetic field or stretching the base layer for orientation, so that the polarizing molecular material is arranged in a specified manner; fixing and drying the polarizing molecular material; removing the barrier layer to form the polarizing layer on the base layer.

19. The method of claim 17, wherein, The manufacturing of the polarizing layer on the base layer comprises: adding a barrier layer on the base layer, the barrier layer corresponding to the second area and / or the third area; coating an impregnating liquid containing polarizing molecular material on the base layer added with the barrier layer; orienting the base layer coated with the impregnating liquid in a magnetic field or stretching the base layer for orientation, so that the polarizing molecular material is arranged in a specified manner; fixing and drying the polarizing molecular material; removing the barrier layer to form the polarizing layer on the base layer.

20. The method of claim 19, wherein, The adding of the barrier layer on the base layer comprises: coating an exposure-removable barrier layer material on the base layer; removing the barrier layer material in the target area by exposure and / or cleaning, and retaining the barrier layer material in the remaining area except the target area to form the barrier layer.

21. The method of claim 19 or 20, wherein, The barrier layer comprises a frame in a grid shape, and a protrusion in a cell contained in the frame, the protrusion being connected with the frame.

22. The method of claim 19 or 20, wherein, The removing of the barrier layer comprises: tearing off the barrier layer; and / or, removing the barrier layer by cleaning; and / or, removing the barrier layer by exposure.

23. The method of claim 17, wherein, The manufacturing of the polarizing layer on the base layer comprises: coating an impregnating liquid containing polarizing molecular material on the base layer; orienting the base layer coated with the impregnating liquid in a magnetic field or stretching the base layer for orientation, so that the polarizing molecular material is arranged in a specified manner; fixing and drying the polarizing molecular material to obtain the polarizing layer; processing a specified area in the polarizing layer so that the specified area does not have or weakens the polarizing function, the specified area including the second area and / or the third area.

24. The method of claim 23, wherein, The processing of the specified area in the polarizing layer comprises: grinding the polarizing molecular material in the specified area by computer numerical control (CNC) technology; and / or, destroying the polarizing function of the polarizing molecular material in the specified area by local heating; and / or, destroying the polarizing function of the polarizing molecular material in the specified area by local corrosion; and / or, destroying the polarizing function of the polarizing molecular material in the specified area by applying a magnetic field; and / or, destroying the polarizing function of the polarizing molecular material in the specified area by ultraviolet irradiation.

Images