Patent ID: 12228816

DETAILED DESCRIPTION

In order to make objects, technical details and advantages of the embodiments of the disclosure apparent, the technical solutions of the embodiment will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the disclosure. It is apparent that the described embodiments are just a part but not all of the embodiments of the disclosure. Based on the described embodiments herein, those skilled in the art may obtain other embodiment, without any creative work, which shall be within the scope of the disclosure.

Unless otherwise defined, all the technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms, such as “first,” “second,” or the like, which are used in the description and the claims of the present disclosure, are not intended to indicate any sequence, amount or importance, but for distinguishing various components. The terms, such as “comprise/comprising,” “comprise/comprising,” or the like are intended to specify that the elements or the objects stated before these terms encompass the elements or the objects and equivalents thereof listed after these terms, but not preclude other elements or objects. The terms “inside,” “outside”, “on,” “under” or the like are only used to indicate relative position relationship, and when the position of the object which is described is changed, the relative position relationship may be changed accordingly.

Dimensions of the drawings in the present disclosure are not strictly drawn to the actual scale, and the number of pixel units of colors in the display panel are not limited to the number illustrated in the drawings. The specific size and the number of each structure can be determined according to actual needs. The drawings described in the present disclosure are merely structural schematic diagrams.

The local dimming technology can divide the entire backlight unit into a plurality of backlight blocks that are driven individually, and each of the backlight blocks comprises one or more LEDs. According to gray levels that need to be displayed in different portions of a display image, driving currents of the LEDs of the backlight blocks corresponding to these portions are automatically adjusted, and the brightness of each portion of the backlight unit can be adjusted individually, thereby improving the contrast of the display image. For example, in an exemplary direct type backlight unit, a schematic diagram of region division of LED light sources in the entire backplane is illustrated inFIG.1A. A small square in the figure represents one LED unit, and a plurality of regions separated by dashed lines represent a plurality of backlight regions. Each of the backlight regions comprises one or more LED units and can be controlled independently of other backlight regions. For example, the LEDs in each of the backlight regions are linked, that is, the same current passes through the LEDs in the same backlight region.

The local dimming technology can adjust the brightness of the corresponding backlight block according to the grayscale of the image content displayed by the liquid crystal display panel.FIG.1Bis a schematic diagram illustrating the display brightness of the display image and the backlight block corresponding to the display image after a local dimming process. As illustrated inFIG.1B, the backlight unit comprises a plurality of rectangular backlight regions arranged in an array. The local dimming technology can adjust the brightness of the corresponding backlight block according to the grayscale of the image content displayed by the liquid crystal display panel. For the portion that the brightness (grayscale) of the image is higher, the brightness of the corresponding backlight block is higher, and for the portion that the brightness of the image is lower, the brightness of the corresponding backlight block is lower. Therefore, the purposes of reducing the backlight power consumption, improving the contrast of the display image, and enhancing the quality of the display image are achieved.

However, the above-mentioned local dimming technology is applicable to the direct type backlight unit, and the LEDs used as light sources are evenly distributed on the entire backplane, for example. In order to apply the local dimming technology to, for example, a side-in type backlight unit, it is necessary to add a light control panel between the display liquid crystal panel and the side-in type backlight unit. The light control panel can control the light transmittance in a predetermined region. For a portion of the display image in which the brightness (grayscale) is higher, the light transmittance of the a region, corresponding to this portion of the display image, of the light control panel is also higher, so as to allow more light emitted from the backlight unit to pass through this portion of the light control panel; for a portion of the display image in which the brightness of the image is lower, the light transmittance of a region, corresponding to this portion of the display image, of the light control panel is also lower, so as to allow less light emitted from the backlight unit to pass through this portion of the light control panel, thereby achieving the purposes of improving the contrast of the display image and enhancing the quality of the display image. In addition, in the case where the direct type backlight unit is directly formed on a direct type backlight source, it is difficult to divide the backlight unit to achieve a high density (the number of the backlight unit per unit area) and a high accuracy. In the case where the division density and accuracy requirements of the light control unit are high, these requirements can be achieved using the light control panel, and the manufacture process of the light control panel is easy to be implemented.

In this type of local dimming display panel, light from the backlight source passes through the light control panel and the display liquid crystal panel in sequence, the light transmittance is usually low. Therefore, it is of great significance to improve the light transmittance of this type of display panel.

At least one embodiment of the present disclosure provides a display panel, the display panel includes a display liquid crystal panel and a light control panel that are stacked, a first polarizer, a second polarizer, and a third polarizer. The display liquid crystal panel includes a first substrate and a second substrate that are opposite to each other, and a display liquid crystal layer between the first substrate and the second substrate; the light control panel includes a third substrate and a fourth substrate that are opposite to each other, and a light control liquid crystal layer between the third substrate and the fourth substrate. The second substrate and the third substrate are between the first substrate and the fourth substrate. The light control liquid crystal layer is between the first polarizer and the second polarizer; the first polarizer is between the second polarizer and the third polarizer, and the display liquid crystal layer is between the first polarizer and the third polarizer; the first polarizer, the second polarizer, and the third polarizer are configured to allow backlight to emit out of the display panel after passing through the second polarizer, the first polarizer, and the third polarizer in sequence.

Exemplarily,FIG.2Ais a first schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure. As shown inFIG.2A, the display panel10provided by the embodiment of the present disclosure includes a display liquid crystal panel1and a light control panel2that are stacked, a first polarizer31, a second polarizer32, and a third polarizer33. The display liquid crystal panel1includes a first substrate11and a second substrate12that are opposite to each other, and a display liquid crystal layer13located between the first substrate11and the second substrate12; the light control panel2includes a third substrate23and a fourth substrate24that are opposite to each other, and a light control liquid crystal layer25located between the third substrate23and the four substrates24; the second substrate12and the third substrate23are located between the first substrate11and the fourth substrate24. The light control liquid crystal layer23is located between the first polarizer31and the second polarizer32; the first polarizer31is located between the second polarizer32and the third polarizer33, and the display liquid crystal layer13is located between the first polarizer31and the third polarizer33. The first polarizer31, the second polarizer32, and the third polarizer33are configured to allow backlight to emit out of the display panel after passing through the second polarizer32, the first polarizer31and the third polarizer33in sequence. The backlight refers to light from a backlight source. The polarization direction of the first polarizer31is perpendicular to the polarization direction of the second polarizer32; and the polarization direction of the third polarizer33is perpendicular to the polarization direction of the second polarizer32. Therefore, the display liquid crystal panel1is used to realize the display function, and the light control panel2is used to control the direction or strength of the backlight incident to the display liquid crystal panel1according to requirements, for example, to realize the requirements of switching between a narrow viewing angle and a wide viewing angle, and controlling the luminous intensity of different positions of the display panel to be different. For example, the backlight may come from a direct type backlight source or a side-in type backlight source.

In at least one embodiment of the present disclosure, for example, the second polarizer32is a reflective polarizer, so that light entering the light control panel2can be reflected multiple times by the second polarizer32, thereby improving the light transmittance of the display panel10. Through experiments, under the same other conditions, the light transmittance of the light control panel2can reach more than 30%, and in the case where the second polarizer is a non-reflective polarizer, the light transmittance is less than 30%. Under the same conditions, the higher the light transmittance of the light control panel2is, the higher the light transmittance of the entire display panel10is. Therefore, in the embodiments of the present disclosure, under the same conditions of the liquid crystal display panel1, the light transmittance data of the light control panel2is used to characterize the light transmittance of the entire display panel10.

For example, the above-mentioned reflective polarizer may be a wire grid type polarizer, for example, a wire-grid polarizer (WGP), that is, the second polarizer is a wire-grid polarizer. The material of the wire-grid polarizer is white metal to improve the reflectivity of the second polarizer. The white metal is, for example, aluminum which not only has high reflectivity, but also has stable properties, low hardness and good ductility, and make is easy to manufacture the wire-grid polarizer.

As shown inFIG.2A, for example, the first substrate11is a color filter substrate. For example, a color filter layer is provided on a side of the first substrate11close to the second substrate12. The color filter layer includes a plurality of pixel units6arranged in an array, and each of the plurality of pixel units6includes a plurality of sub-pixels of different colors, and for example, each of the plurality of pixel units6includes a first color sub-pixel61, a second color sub-pixel62, and a third color sub-pixel63. The backlight from the backlight source enters the display liquid crystal panel1after being controlled by the light control panel2, and then exits after passing through the color filter layer. The second substrate12is a display array substrate, and a display array component51is provided on a side of the second substrate12close to the first substrate11. The display array component51includes, for example, a pixel drive circuit; for example, the pixel drive circuit includes a thin film transistor (TFT) and other components for driving and controlling the display state of the display liquid crystal panel1. For the specific structure of the display array component51, those skilled in the art can use conventional technology to design.

For example, the fourth substrate24is a light control array substrate, a light control array component52is provided on a first side of the fourth substrate24close to the liquid crystal display panel1, and the second polarizer32is located on a second side of the fourth substrate24away from the third substrate23. The light control panel2includes a plurality of light control units arranged in an array, and can respectively control the dimming state of the plurality of light control units. For example, the light control array component52includes a thin film transistor (TFT) and other components for driving and controlling the dimming state of the plurality of the light control units. For the specific structure of the light control array component52, those skilled in the art can use conventional technology to design.

For the simulation test of the light control panel2under different conditions, the simulation results are shown in Table 1. In the simulation test, a backlight source is provided, and the backlight source includes a light-emitting device and a reflective sheet. The reflective sheet is located on a side of the light-emitting device away from the light control panel2. Light emitted by the light-emitting device enters the light control panel2and and then to emit out of the light control panel2after passing through the second polarizer32and the first polarizer31in sequence. The simulation test conditions are: the transmittance of the transmissive polarizer being in a range of 42%-43%, the transmittance of the WGP being 35%, the line width of each of the plurality of grids in the WGP being 70 nm, the distance between adjacent grids being 70 nm, and the height of each of the plurality of grids being 200 nm.

TABLE 1Type of the First PolarizerTransmissiveTransmissiveWGPPolarizerPolarizerType of the Second PolarizerTransmissiveWGPWGPPolarizerLight Transmittance (%)28.532.830.78

For example, in the embodiment shown inFIG.2A, the first polarizer31is located between the second substrate12and the third substrate23, and the first polarizer31is a transmissive polarizer. For example, the third polarizer33is located on the side of the first substrate11away from the second substrate12, and the third polarizer33is a transmissive polarizer. In this case, the first polarizer31and the third polarizer33are both in an integral sheet structure instead of a wire grid structure, and both include an organic material. For example, the first polarizer31is an iodine-based polarizer, and the third polarizer33is an iodine-based polarizer. Of course, in other embodiments, the third polarizer33may be a dye-based polarizer. In this embodiment, it can be seen from Table 1 that through the simulation test on the light control panel2, the light transmittance of the light control panel2in this embodiment can reach 32.8%. In the above simulation results, the light control panel2of this embodiment has the highest light transmittance, this is because the transmissive first polarizer31has the higher light transmittance, and it is especially easy to to obtain a higher light transmittance using an iodine-based polarizer, and the reflectivity of the second polarizer32is higher, so that the second polarizer32can increase the amount of light that passes through the first polarizer31after being reflected by the second polarizer32, thereby significantly improving the light transmittance of the display panel10.

In addition, according to Table 1, in the case where the first polarizer31and the second polarizer32are both transmissive polarizers, the light transmittance is 28.5% which is lower than the light transmittance in the case where the first polarizer31is a transmissive polarizer and the second polarizer32is a WGP (that is, the embodiment shown inFIG.2Aof the present disclosure), this is because in the embodiments shown inFIG.2AandFIG.3of the present disclosure, the second polarizer32is the WGP, a part of light that does not pass through the second polarizer32is reflected multiple times between the second polarizer32and the reflective sheet in the backlight source, which can increase the amount of light passing through the second polarizer32. In addition, in the case where the first polarizer31and the second polarizer32are both transmissive polarizers, the reuse of the reflective sheet in the backlight source cannot be realized. However, in the process of light from the backlight source passing through the transmissive first polarizer31and second polarizer32in sequence, a part of the light passes through the first polarizer31and the second polarizer32, and the other part of the light is absorbed by the first polarizer31and the second polarizer32, that is, the other part of the light is absorbed by two times, which causes a large amount of loss of the light, and the reflective sheet of the backlight source cannot play the function of reflecting the light again.

It should be noted that in the embodiments of the present disclosure, for example, in the embodiment shown inFIG.2A, in the case where the third polarizer33is the above-mentioned transmissive polarizer, because the transmissive polarizer includes an organic material, the third polarizer33cannot be disposed on the side of the first substrate11close to the second substrate12, that is, the third polarizer33cannot be disposed in the liquid crystal cell, so as to prevent the organic material from being unable to withstand high temperature during the cell assembling process and damaging the third polarizer.

Of course, in the embodiment shown inFIG.2A, in the case where the first polarizer31is the above-mentioned transmissive polarizer, the position of the first polarizer31includes, but is not limited to, the position between the second substrate12and the third substrate23. For example, in some embodiments, the first polarizer31is disposed on a side of the third substrate23away from the second substrate12, or the first polarizer31is disposed on a side of the second substrate12away from the third substrate23.

For example, in the case where the first polarizer31is the transmissive polarizer, as shown inFIG.2B, the first polarizer31includes a polyvinyl alcohol (PVA) film which is capable of generating polarized light, such as a polyvinyl alcohol (PVA) film including dichroic dye iodine, and further includes two triacetate cellulose (TAV) protection films respectively on two sides of the polyvinyl alcohol (PVA) film. For example, the first polarizer31further includes a pressure-sensitive adhesive on a side of any TAV protection film away from the PVA film, a release film covering the pressure-sensitive adhesive and in contact with the pressure-sensitive adhesive, and a protection layer on the outermost layer of the transmissive polarizer.

For example, in some embodiments, the reflective polarizer in the embodiments of the present disclosure may be a non-wire grid polarizer, such as a sheet-shaped reflective polarizer. For example, as shown inFIG.2C, the reflective polarizer includes the above-mentioned PVA film, the TAV protection film, the pressure-sensitive adhesive, the release film, and a reflective layer on the side of the release film away from the PVA film. This kind of reflective polarizer can also improve the light transmittance of the display panel to a certain extent, but compared to this kind of reflective polarizer, in the case the reflective polarizer is the WGP, the display panel10can obtain higher light transmittance.

For example, as shown inFIG.2A, the display panel10further includes a protection layer42, and the first protection layer42covers the second polarizer32. In the case where the second polarizer32is the WGP, it is very susceptible to be damaged, and the first protection layer42can prevent the WGP from being damaged, thereby prolonging the service life of the display panel10. For example, the material of the first protection layer42is silicon oxide or silicon nitride, and the thickness of the first protection layer42is greater than or equal to 4500 angstroms to form a dense protection layer to better prevent the WGP from scratching while avoiding external moisture getting into the WGP, in which the external moisture can cause thermal expansion of the WGP, and cause damage to the WGP. If the thickness of the first protection layer42is too small, the water and oxygen barrier effect will be reduced. The thickness of the first protection layer42is greater than or equal to 4500 angstroms to obtain a better water and oxygen barrier effect.

For example, the display panel10further includes an adhesive7for bonding the first substrate11and the second substrate12and bonding the third substrate23and the fourth substrate24in the assembling process, so as to form the display liquid crystal panel1and the light control panel2.

For example, the first substrate11, the second substrate12, the third substrate23, and the fourth substrate24may all be glass substrates, or quartz substrates, etc., or may be flexible substrates such as polyimide substrates for forming flexible display panels.

For example,FIG.3is a second schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure. As shown inFIG.3, the difference between the display panel and the display panel shown inFIG.2Ais that the first polarizer31is located between the second substrate12and the third substrate23, and the first polarizer31is a reflective polarizer, for example, is a wire-grid polarizer (WGP). In this case, light reflected by the first polarizer31is depolarized by the second polarizer32and then is reflected again by the second polarizer32and the first polarizer31. The light is reflected multiple times between the first polarizer31and the second polarizer32, which significantly increases the light transmittance. It can be seen from Table 1 that according to the simulation test on the light control panel2, the light transmittance of the light control panel2in this embodiment can reach 30.78%.

For example, as shown inFIG.3, the display panel10further includes a second protection layer41, the second protection layer41covers the first polarizer31to prevent the WGP from being damaged and thereby prolong the service life of the display panel10. The material and thickness of the second protection layer41are the same as the material and thickness of the first protection layer42, and the foregoing descriptions can be referred to.

It should be noted that in the embodiment shown inFIG.3, the first polarizer31is a reflective polarizer. In this case, the first polarizer31is located on the side of the second substrate12away from the first substrate11to avoid generating an interference electric field between the first polarizer31made of a metal material and the display array component51, so as to prevent the interference electric field from affecting the display effect. Other unmentioned features of the display panel shown inFIG.3are the same as those of the display panel shown inFIG.2A, please refer to the previous descriptions.

For example,FIG.4is a third schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure. As shown inFIG.4, the difference between the display panel and the display panel shown inFIG.2Ais that the first polarizer31is a reflective polarizer such as a WGP, and the first polarizer31is opposite to the second polarizer32; the second substrate12and the third substrate23constitute an integral structure, and the integral structure serves as a common substrate110, and the display liquid crystal panel1and the light control panel2share the common substrate110. The first substrate11is a color filter substrate, and a color filter layer9is provided on a first side of the first substrate11close to the common substrate110. The common substrate110is a display array substrate, a display array component51is provided on a first side of the common substrate110close to the first substrate11. The first polarizer31is provided on a second side of the common substrate110close to the fourth substrate. Because the display panel10of this embodiment has three substrates, the display panel10is thinned, the manufacture process of the display panel can be simplified, and the cost can be saved. In addition, because the first polarizer31is disposed on the second side of the common substrate110close to the fourth substrate, it is possible to avoid generating the interference electric field between the first polarizer31made of a metal material and the display array component51of the common substrate110, and therefore prevent the interference electric field from affecting the display effect. In this embodiment, the third polarizer33is a transmissive polarizer, the third polarizer33is in an integral sheet structure instead of a wire grid structure, and the material of the third polarizer includes an organic material. For example, the third polarizer33is an iodine-based polarizer to obtain a higher light transmittance. In this case, while the above-mentioned effect of improving the light transmittance of the display panel10can be achieved, the third polarizer33is located on the side of the first substrate away from the common substrate, so as to prevent the third polarizer33from being damaged during the cell assembling process. Other unmentioned features and technical effects of the display panel shown inFIG.4are the same as those inFIG.2A, please refer to the previous descriptions.

FIG.5is a fourth schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure. As shown inFIG.5, the difference between the display panel and the display panel shown inFIG.4is that a color filter layer9is provided on the first side of the first substrate11close to the common substrate110, and the third polarizer33is a reflective polarizer, such as a wire-grid polarizer (WGP), and is located on the first side of the first substrate11and on the side of the color filter layer9close to the first substrate11. The WGP cannot be disposed on the first side of the first substrate11away from the common substrate110, so as to prevent light reflection generated by the WGP from affecting the display. The WGP may be disposed on the second side of the first substrate11close to the common substrate110to reduce the reflection of external light. If the WGP (that is, the third polarizer33) is disposed on a side of the color filter layer9away from the first substrate11, in the manufacture process, the color filter layer9is formed first, and then the WGP is formed on the color filter layer, the forming process of the WGP usually includes a nanoimprint step, and in this process, the nanoimprint step may damage or deform the color filter layer9. Therefore, in this embodiment, while the above-mentioned effect of improving the light transmittance of the display panel10can be achieved, the third polarizer33is located on the first side of the first substrate11and is located on the side of the color filter layer9close to the first substrate11, which can prevent the above-mentioned damage to the color filter layer9. Other unmentioned features of the display panel shown inFIG.5are the same as those inFIG.4, please refer to the previous descriptions.

FIG.6is a fifth schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure, andFIG.7is a sixth schematic cross-sectional view of a display panel provided by an embodiment of the present disclosure. As shown inFIG.6, the difference between the display panel and the display panel shown inFIG.4is that the first substrate11is a display array substrate, and a display array component51is provided on the second side of the first substrate11close to the common substrate110. The third polarizer33is located on the side of the first substrate11away from the common substrate110. The third polarizer33is a transmissive polarizer. The third polarizer33is in an integral sheet structure instead of a wire grid structure. The material of the polarizer33includes an organic material. For example, the third polarizer33is an iodine-based polarizer to help to increase the light transmittance of the display panel10. The common substrate110is a color filter substrate. A color filter layer9is provided on the first side of the common substrate110close to the first substrate11; the first polarizer31is located on the first side of the common substrate110close to the first substrate11and is located on the side of the color filter layer9close to the common substrate110. Therefore, while the above-mentioned effect of improving the light transmittance of the display panel10is achieved, it is possible to prevent the color filter layer9from being damaged during the manufacture process of the display panel, similar to the embodiment shown inFIG.5. Alternatively, as shown inFIG.7, the first polarizer31is disposed on a second side of the common substrate110close to the fourth substrate24. The display panel10shown inFIG.7achieves the same or similar technical effects as the display panel10shown inFIG.4. The other unmentioned features and technical effects of the panels shown inFIG.6andFIG.7are the same as those inFIG.4, please refer to the previous descriptions.

At least one embodiment of the present disclosure provides a display apparatus, the display apparatus includes any display panel provided by the embodiments of the present disclosure.

FIG.8is a schematic diagram of a display apparatus provided by an embodiment of the disclosure. As shown inFIG.8, the display apparatus100includes any display panel10provided by the embodiments of the present disclosure. The display apparatus100is a liquid crystal display apparatus. For example, the display apparatus100may be implemented as the following products: a mobile phone, a tablet computer, a display, a notebook computer, an ATM machine, or other products or components with display functions. The display apparatus10can control the direction or intensity of the backlight incident to the display liquid crystal panel1and has a high light transmittance.

At least one embodiment of the present disclosure provides a manufacture method of a display panel, the method includes: forming a display liquid crystal panel and a light control panel that are stacked, in which the display liquid crystal panel includes a first substrate and a second substrate that are opposite to each other, and a display liquid crystal layer between the first substrate and the second substrate; the light control panel includes a third substrate and a fourth substrate that are opposite to each other, and a light control liquid crystal layer between the third substrate and the fourth substrate; and the second substrate and the third substrate are between the first substrate and the fourth substrate; forming a first polarizer; forming a second polarizer, in which the light control liquid crystal layer is between the first polarizer and the second polarizer; and forming a third polarizer, in which the first polarizer is between the second polarizer and the third polarizer, and the display liquid crystal layer is between the first polarizer and the third polarizer; the first polarizer, the second polarizer, and the third polarizer are configured to allow backlight to emit out of the display panel after passing through the second polarizer, the first polarizer, and the third polarizer in sequence.

Exemplarily,FIGS.9A-9Mare schematic diagrams of a manufacture method of a display panel provided by an embodiment of the present disclosure. In this embodiment, the second substrate and the third substrate are integrated into an integral structure. The integral structure serves as a common substrate, the display liquid crystal panel and the light control panel share the common substrate, and the common substrate is a display array substrate. The manufacture method includes the following steps.

As shown inFIG.9A, a common substrate110is provided, and a display array component51is formed on the first side of the common substrate110. The display array component51includes components, for example, a pixel drive circuit, such as a thin film transistor (TFT), etc., for driving and controlling the display state of the liquid crystal panel1, a semiconductor process can be used to form the display array component51, and those skilled in the art can refer to conventional techniques.

As shown inFIG.9B, a first substrate11is provided, and a third polarizer33is formed on the first side of the first substrate11. The third polarizer33is a wire-grid polarizer (WGP). For example, the forming process of the WGP includes: forming a metal layer; forming an organic layer on the metal layer; forming an etching barrier layer on the organic layer using a nanoimprint process, and using the etching barrier layer as a mask to etching the metal layer to form the WGP.

As shown inFIG.9C, after forming the wire-grid polarizer (that is, the third polarizer33), a color filter layer9is formed on the side of the third polarizer33away from the first substrate11. For the specific structure of the color filter layer9, please refer to the descriptions in the previous embodiments, which is not be repeated here. In the above-mentioned manufacturing process of the WGP, the nanoimprint step may damage or deform the color filter layer9. Therefore, in this embodiment, because after the wire-grid polarizer (that is, the third polarizer33) is formed, the color filter layer9is formed on the side of the third polarizer33away from the first substrate11, and the color filter layer9can be prevented from being damaged by the above-mentioned nanoimprint step.

As shown inFIG.9D, the first substrate11and the common substrate110are assembled to form a display liquid crystal panel as shown inFIG.9E. The color filter layer9and the display array component51are located between the common substrate110and the first substrate11and are opposite to each other.

As shown inFIG.9F, after assembling the first substrate11and the common substrate110, the first polarizer31is formed on the second side of the common substrate110opposite to the first side. For example, the first polarizer31is a reflective polarizer, such as a WGP, and the first polarizer31is opposite to the second polarizer32so as to increase the light transmittance of the display panel. For specific technical effects, please refer to the previous descriptions, which is not repeat here. If the WGP is formed on the second side of the common substrate110first, then the display array component51is formed, and then the cell is assembled, in order to prevent the WGP from being damaged in the process of forming the display array component51, it is required to form a protection film covering the WGP, and it is required to remove the protection film after finishing the assembling process, which increases the process steps. Therefore, in this embodiment, the display array component51is formed on the common substrate110first, and then the first substrate11and the common substrate110are assembled to form a cell, and then WGP is formed on the common substrate110, thereby simplifying the manufacture process of the display panel, improving production efficiency and reducing production costs. At least the process of forming the protection film to prevent damage to the WGP and the process of removing the protection film can be omitted.

As shown inFIG.9G, a fourth substrate24is provided, and a second polarizer32is formed on the first side of the fourth substrate24. For example, the second polarizer32is a reflective polarizer, such as a WGP. For the specific manufacture process, please refer to the previous descriptions.

As shown inFIG.9H, a first protection layer42covering the second polarizer32is formed. The material of the first protection layer42is, for example, an inorganic material such as silicon oxide or silicon nitride, for example, which can be formed by a deposition method. The embodiments of the present disclosure do not limit the material of the first protection layer42.

As shown inFIG.9I, the manufacture method further includes: forming a sacrifice protection layer8covering the second polarizer32before forming the light control array component. For example, the sacrifice protection layer8is an organic layer, for example, the material of the organic layer is a resin material or a photoresist material to facilitate subsequent removal of the sacrifice protection layer8. Of course, the embodiments of the present disclosure do not limit this.

As shown inFIG.9J, after forming the second polarizer32, for example, after forming the sacrifice protection layer8, the light control array component52is formed on the second side of the fourth substrate42opposite to the first side. The light control array component52may be formed by a semiconductor process, and the conventional technology in the art can be referred to for details.

As shown inFIG.9K, after forming the light control array component52, the sacrifice protection layer8is removed. For example, the sacrifice protection layer8can be removed by a peeling method.

As shown inFIG.9L, the fourth substrate24and the common substrate110are assembled to form a light control panel, and the light control array component52is located on the side of the fourth substrate24close to the common substrate110. Liquid crystals are injected between the first substrate11and the common substrate110and between the fourth substrate24and the common substrate110, thereby forming the display panel10shown inFIG.9M, that is, the display panel10shown inFIG.5. In the display panel10, the first substrate11is a color filter substrate, and the common substrate110is a display array substrate.

In the process of manufacturing the display panel shown inFIG.6, after the first polarizer31is formed, a color filter layer9is formed on the first side of the first polarizer31away from the common substrate110to prevent the color filtering layer9from being damaged in the process of forming the WGP. For the steps of forming other corresponding structures of the display panel shown inFIG.6, reference may be made to the sequence of the steps in the embodiments of the above-mentioned manufacture method.

FIGS.10A-FIG.10Eare schematic diagrams of another manufacture method of a display panel provided by an embodiment of the present disclosure.

As shown inFIG.10A, a common substrate110is provided, and a display array component51is formed on the first side of the common substrate110. The display array component51includes components, for example, includes a pixel drive circuit; for example, the drive circuit includes a thin film transistor (TFT), etc. for driving and controlling the display state of the liquid crystal panel1, a semiconductor process may be adopted to form the display array component51, and those skilled in the art can refer to conventional techniques.

As shown inFIG.10B, providing a first substrate11, and forming a color filter layer9on the first side of the first substrate11.

As shown inFIG.10CandFIG.10D, the first substrate11and the common substrate110are assembled to form a display liquid crystal panel; the color filter layer9and the display array component51are located between the common substrate110and the first substrate11and are opposite to each other.

As shown inFIG.10E, after assembling the first substrate11and the common substrate110, a third polarizer33is formed on the second side of the first substrate11away from the common substrate110; the third polarizer33is a transmissive polarizer. The third polarizer33is in an integral sheet structure instead of a wire grid structure, and the material of the third polarizer33includes an organic material. For example, the third polarizer33is an iodine-based polarizer or a dye-based polarizer. For example, the third polarizer33is directly attached to the second side of the first substrate11.

Then, the steps in the descriptions ofFIGS.9F-9Mare performed as subsequent manufacture steps to form the display panel10shown inFIG.4.

For the technical effects of the structure that are not mentioned in the embodiments of the manufacture method, please refer to the descriptions in the embodiments of the display panel.