Liquid crystal box manufacturing method

Abstract

The present invention provides a liquid crystal box and a manufacturing method thereof, the manufacturing method of the liquid crystal box comprising: arranging a pixel defining layer on a driving back plate, the pixel defining layer forming a plurality of spaced accommodation holes; arranging a first light shielding layer in a first sub-hole, and arranging a light decomposition layer in at least a second sub-hole and a third sub-hole; adding a first liquid crystal in the accommodation hole and curing the first liquid crystal, and bonding the first liquid crystal with an adhesive; irradiating the side of the driving back plate away from the pixel defining layer with a laser to decompose the light decomposition layer in the second sub-hole and the third sub-hole; removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole; arranging a second liquid crystal in the second sub-hole; and arranging a third liquid crystal in the third sub-hole. The manufacturing method of the liquid crystal box can effectively reduce the thickness and weight of electronic paper and display devices, and effectively improve the utilization rate of light energy.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a liquid crystal box and a manufacturing method thereof. Background Art

[0002] With the development of optoelectronic display technology and semiconductor manufacturing technology, various displays such as LCD, OLED, and electronic paper are available on the market. Among them, electronic paper has a wide range of application prospects because of its comfortable reading, ultra-thin and light, bendable, and ultra-low power consumption. One type of electronic paper display is prepared by cholesterol liquid crystal (also known as cholesteric phase liquid crystal). This kind of liquid crystal has a certain pitch (P) between liquid crystal molecules. By adjusting different pitches, it can reflect light of different wavelengths (λ=nP, λ is the wavelength of reflected light, and n is the refractive index). Therefore, we can use liquid crystals with different pitches to reflect light of different wavelengths in natural light. For example, using three kinds of liquid crystals with different pitches, respectively reflect the RGB three-color light in natural light, thereby achieving full-color display. At this stage, three liquid crystal boxes (cells) are stacked. The display device made in this way is very heavy, and the three liquid crystal boxes will absorb a certain amount of light, resulting in reduced light utilization.

[0003] In view of this, it is necessary to provide a new liquid crystal box and a manufacturing method to solve or at least alleviate the above technical defects. Summary of the invention

[0004] The main purpose of the present invention is to provide a liquid crystal box and a manufacturing method thereof, aiming to solve the technical problems of heavy display devices and low light utilization in the prior art.

[0005] To achieve the above object, according to one aspect of the present invention, the present invention provides a method for manufacturing a liquid crystal box, the method for manufacturing a liquid crystal box comprising the following steps:

[0006] A driving backplane is provided, a pixel defining layer is arranged on the driving backplane, and a plurality of spaced accommodating holes are formed on the pixel defining layer; wherein the accommodating holes include a first sub-hole, a second sub-hole and a third sub-hole;

[0007] A first light shielding layer is arranged in the first sub-hole, and a light decomposition layer is arranged in at least the second sub-hole and the third sub-hole;

[0008] Adding a first liquid crystal into the receiving hole and solidifying the first liquid crystal, and bonding the first liquid crystal with an adhesive;

[0009] Using laser to irradiate from a side of the driving back plate away from the pixel defining layer to decompose the light decomposition layer in the second sub-hole and the third sub-hole;

[0010] removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole;

[0011] disposing a second liquid crystal in the second sub-hole;

[0012] A third liquid crystal is disposed in the third sub-hole.

[0013] In some embodiments, after the step of removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole, the method further includes the following steps:

[0014] A first protection layer is disposed on the first liquid crystal of the first sub-hole.

[0015] In some embodiments, the step of disposing a second liquid crystal in the second sub-hole comprises:

[0016] A second light shielding layer is arranged in the second sub-hole, and a light decomposition layer is arranged in the third sub-hole;

[0017] Adding a second liquid crystal into the second sub-hole and the third sub-hole and solidifying the second liquid crystal;

[0018] Adhere to the second liquid crystal by using an adhesive;

[0019] A laser is used to irradiate from a side of the driving back plate away from the pixel defining layer to decompose the light decomposition layer in the third sub-hole:

[0020] The adhesive is removed to remove the second liquid crystal in the third sub-hole.

[0021] In some embodiments, after the step of removing the adhesive to remove the second liquid crystal in the third sub-hole, the step further includes:

[0022] A second protection layer is disposed on the second liquid crystal of the second sub-hole.

[0023] In some embodiments, the step of disposing a third liquid crystal in the third sub-hole comprises:

[0024] A third liquid crystal is added into the third sub-hole and the third liquid crystal is solidified.

[0025] In some embodiments, after the step of adding the third liquid crystal into the third sub-hole and solidifying the third liquid crystal, the step further includes:

[0026] A third protection layer is disposed on the third liquid crystal of the third sub-hole.

[0027] In some embodiments, the step of providing a light decomposition layer at least in the second sub-hole and the third sub-hole comprises:

[0028] Disposing a light decomposition layer in the second sub-hole and the third sub-hole; or,

[0029] A light decomposition layer is disposed in the first sub-hole, the second sub-hole and the third sub-hole, wherein the light decomposition layer in the first sub-hole covers the upper surface of the first light shielding layer.

[0030] In some embodiments, the step of providing a light decomposition layer at least in the second sub-hole and the third sub-hole comprises:

[0031] An organic material photodecomposable layer or an inorganic material photodecomposable layer that can be decomposed under laser light is provided at least in the second sub-hole and the third sub-hole through film formation and photolithography processes.

[0032] According to another aspect of the present invention, the present invention also provides a liquid crystal box, which is made by the liquid crystal box manufacturing method described above, and the liquid crystal box includes a driving backplane, multiple liquid crystals and a pixel defining layer arranged on the driving backplane, and the pixel defining layer is formed with a plurality of spaced-apart accommodating holes, and each of the accommodating holes is arranged with one of the multiple liquid crystals.

[0033] In some embodiments, a light shielding layer is provided on the inner wall surface of the accommodating hole.

[0034] In the above scheme, the manufacturing method of the liquid crystal box of the present invention includes the following steps: providing a driving backplane, setting a pixel defining layer on the driving backplane, and forming a plurality of spaced accommodation holes on the pixel defining layer; wherein the accommodation hole includes a first sub-hole, a second sub-hole and a third sub-hole; setting a first light shielding layer in the first sub-hole, and setting a light decomposition layer at least in the second sub-hole and the third sub-hole; adding a first liquid crystal in the accommodation hole and curing the first liquid crystal, and bonding it with the first liquid crystal using an adhesive; irradiating the driving backplane from the side away from the pixel defining layer with a laser to decompose the light decomposition layer in the second sub-hole and the third sub-hole; removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole; setting a second liquid crystal in the second sub-hole; and setting a third liquid crystal in the third sub-hole. In the above embodiment of the present invention, three liquid crystals reflecting light of different wavelengths can be set in the same liquid crystal box. Compared with the need to use three liquid crystal boxes in the prior art, the thickness and weight of the electronic paper and the display device can be effectively reduced, and the electronic paper or display device produced has only one liquid crystal box to absorb light, which can effectively improve the utilization rate of light energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0036] Figure 1 is a schematic flow chart of a method for manufacturing a liquid crystal cell according to a first embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of a driving backplane and a pixel defining layer according to an embodiment of the present invention;

[0038] Figure 3 It is a schematic diagram of the opening cross section of the receiving hole according to an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the structure of a driving backplane, a pixel defining layer, a light decomposition layer and a first protective layer according to an embodiment of the present invention;

[0040] Figure 5 Another structural schematic diagram of a driving backplane, a pixel defining layer, a light decomposition layer and a first protective layer according to an embodiment of the present invention;

[0041] Figure 6 It is a schematic structural diagram of bonding the bonding member and the first liquid crystal according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic structural diagram of an adhesive member removing the first liquid crystal in the second sub-hole and the third sub-hole according to an embodiment of the present invention;

[0043] Figure 8 A schematic flow chart of a method for manufacturing a liquid crystal cell according to a second embodiment of the present invention;

[0044] Fig. 9 A partial schematic diagram of a process for manufacturing a liquid crystal cell according to a third embodiment of the present invention;

[0045] Fig.10 A partial schematic diagram of a process for manufacturing a liquid crystal cell according to a fourth embodiment of the present invention;

[0046] Fig.11 is a schematic flow chart of a method for manufacturing a liquid crystal cell according to a fifth embodiment of the present invention;

[0047] Fig.12 It is a partial flow chart of a method for manufacturing a liquid crystal cell according to a sixth embodiment of the present invention;

[0048] Fig.13 is a schematic flow chart of a method for manufacturing a liquid crystal cell according to a seventh embodiment of the present invention;

[0049] Fig.14 is a schematic flow chart of a method for manufacturing a liquid crystal cell according to an eighth embodiment of the present invention;

[0050] Fig.15 is a schematic flow chart of a method for manufacturing a liquid crystal cell according to a ninth embodiment of the present invention;

[0051] Fig.16 Schematic diagram of the structure of a liquid crystal box according to an embodiment of the present invention.

[0052] Description of Figure Numbers:

[0053] 200, liquid crystal box;

[0054] 10. Driving backplane; 20. Pixel defining layer; 31. First sub-hole; 32. Second sub-hole; 33. Third sub-hole; 41. First liquid crystal; 42. Second liquid crystal; 43. Third liquid crystal; 50. Photodecomposition layer; 60. Adhesive; 61. Transfer plate; 62. Viscous material; 71. First protective layer; 72. Second protective layer; 73. Third protective layer; 81. First shading layer; 82. Second shading layer; 83. Third shading layer; 90. Upper substrate; 100. Common electrode.

[0055] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0058] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0059] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0060] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for manufacturing a liquid crystal box according to a first embodiment of the present invention. According to one aspect of the present invention, the present invention provides a method for manufacturing a liquid crystal box, and the method for manufacturing a liquid crystal box comprises the following steps:

[0061] S100, providing a driving backplane 10, and disposing a pixel defining layer 20 on the driving backplane 10, wherein the pixel defining layer 20 is formed with a plurality of spaced accommodation holes; wherein the accommodation holes include a first sub-hole 31, a second sub-hole 32, and a third sub-hole 33;

[0062] Combined with reference Figure 2 , the driving backplane 10 is used to carry the pixel defining layer 20, and a driving circuit is arranged on the driving backplane 10, and the driving circuit is used to transmit current signals to the pixel unit composed of the pixel defining layer 20 and the liquid crystal. The pixel defining layer 20 is formed with a receiving hole for receiving the liquid crystal and for limiting the liquid crystal. The material of the pixel defining layer 20 can be but not limited to organic matter, and can be prepared by a coating method, or can be made by a vacuum evaporation method, a sputtering method or a chemical vapor deposition method. Specifically, in the present application, the pixel defining layer 20 can be a photoresist layer, which is made of a photoresist material. Specifically, a layer of photoresist material is uniformly coated on the driving backplane 10, and then a receiving hole is formed by a photolithography process. Specifically, the shape of the receiving hole can be a trumpet shape, and the size of the receiving hole gradually increases from the end close to the driving backplane 10 to the end away from the driving backplane 10, which is equivalent to setting the opening size of the receiving hole on the side where the liquid crystal is dripped into the liquid crystal to be larger, so as to facilitate the dripping of the liquid crystal into the receiving hole. After the liquid crystal is dripped into the receiving hole, it can be vibrated so that the liquid crystal fills the receiving hole. Combined with reference Figure 3, the cross-sectional shape of the opening of the receiving hole can be a variety of shapes. It can be understood that the present application does not limit the shape of the receiving hole, which can be circular, triangular or rectangular. The receiving holes can be, but are not limited to, uniformly arranged, so that the display device made of electronic paper can achieve a uniform display effect. In other embodiments, multiple receiving holes can also be arranged at non-uniform intervals. Dividing the receiving hole into a first sub-hole 31, a second sub-hole 32 and a third sub-hole 33 does not mean that the sizes or shapes of the first sub-hole 31, the second sub-hole 32 and the third sub-hole 33 are necessarily different, but are used to accommodate different liquid crystals. The first sub-hole 31 is used to accommodate the first liquid crystal 41, the second sub-hole 32 is used to accommodate the second liquid crystal 42, and the third sub-hole 33 is used to accommodate the third liquid crystal 43. The wavelengths of light reflected by the first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 are different. Therefore, the first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 present different colors, thereby enabling the electronic paper and the display device to achieve color display. In some embodiments, liquid crystal molecules have a certain helical pitch. By using liquid crystals with different helical pitches, light of different wavelengths in natural light can be reflected, thereby making the liquid crystal present different colors.

[0063] S200, a first light shielding layer 81 is disposed in the first sub-hole 31, and a light decomposition layer 50 is disposed at least in the second sub-hole 32 and the third sub-hole 33;

[0064] Combined with reference Figure 4 and Figure 5 , a first light shielding layer 81 is set in the corresponding sub-hole prepared first. For example, the first liquid crystal 41 is first set in the first sub-hole 31, and the first light shielding layer 81 can be a black photoresist material formed on the hole wall of the first sub-hole 31 by coating and photolithography, which is mainly used to prevent light from penetrating. The light decomposition layer 50 is formed on the inner wall surface of the second sub-hole 32 and the third sub-hole 33 by film formation and photolithography, and can be decomposed under the irradiation of laser. It should be noted that when the first sub-hole 31, the second sub-hole 32 and the third sub-hole 33 are blind holes, the first light shielding layer 81 is set to completely cover the inner wall surface of the first sub-hole 31, and the light decomposition layer 50 is set on the inner wall surface of the second sub-hole 32 and the third sub-hole 33 respectively. When the first sub-hole 31, the second sub-hole 32 and the third sub-hole 33 are receiving holes, when the first sub-hole 31, the second sub-hole 32 and the third sub-hole 33 respectively form the first receiving groove, the second receiving groove and the third receiving groove with the drive back plate 10, at this time, the first light shielding layer 81 can completely cover the groove bottom wall and the groove side wall of the first receiving groove, that is, the inner wall surface of the first sub-hole 31, and the surface of the drive back plate 10 corresponding to the first sub-hole 31 to prevent the laser from passing through. The light decomposition layer 50 can be respectively arranged on the groove bottom wall and the groove side wall of the second receiving groove and the third receiving groove. The first light shielding layer 81 can be made of black photoresist material, and can also play a role in shielding between two pixels to prevent color mixing, without the need to prepare a black matrix for inter-pixel light shielding.

[0065] S300, adding the first liquid crystal 41 into the receiving hole and solidifying the first liquid crystal 41, and bonding the first liquid crystal 41 with the adhesive 60;

[0066] Combined with reference Figure 6 , after the first liquid crystal 41 is dripped in, the first liquid crystal 41 can be made to flow completely into the receiving hole by means of vibration or the like, and then the liquid crystal is solidified by cooling (to about minus 30 degrees), and then the first liquid crystal 41 after solidification is bonded with a weakly sticky adhesive 60. It should be noted that the opening size of the receiving hole is designed to be larger, that is, the size of the side of the receiving hole away from the driving backplane 10 is designed to be larger, so as to facilitate the first liquid crystal 41 to flow completely into the receiving hole, and on the other hand, to facilitate the removal of the solidified liquid crystal through the adhesive 60. Those skilled in the art can understand that if an inverted trapezoidal setting is adopted, that is, the opening size of the receiving hole is designed to be relatively small, it is difficult to take out the solidified first liquid crystal 41 (or the second liquid crystal 42 in the subsequent process).

[0067] S400, irradiating the driving back plate 10 from a side away from the pixel defining layer 20 with a laser, so as to decompose the light decomposition layer 50 in the second sub-hole 32 and the third sub-hole 33;

[0068] Combined with reference Figure 6 Since the photodecomposition layer 50 is made of a material that can be decomposed under laser irradiation, the laser irradiation direction is as follows: Figure 6 As shown by the middle arrow A, the light decomposition layer 50 of the second sub-hole 32 and the third sub-hole 33 decomposes, so that the first liquid crystal 41 is separated from the second sub-hole 32 and the third sub-hole 33 and can be removed by the adhesive 60. However, since the adhesive 60 has a low viscosity and the first light shielding layer 81 is disposed in the first sub-hole 31, the light decomposition layer 50 will not decompose even if it is disposed in the first sub-hole 31, and therefore the first liquid crystal 41 in the first sub-hole 31 cannot be removed.

[0069] S500, removing the adhesive member 60 to remove the first liquid crystal 41 in the second sub-hole 32 and the third sub-hole 33;

[0070] After the adhesive 60 is removed, the first liquid crystal 41 in the second sub-hole 32 and the third sub-hole 33 is removed, so that only the first liquid crystal 41 remains in the first sub-hole 31 .

[0071] S600, disposing a second liquid crystal 42 in the second sub-hole 32;

[0072] The similar steps from S200 to S500 are repeated to dispose a second liquid crystal 42 layer in the second sub-hole 32 .

[0073] S700 , disposing a third liquid crystal 43 in the third sub-hole 33 .

[0074] After the second liquid crystal 42 layer is arranged, the third liquid crystal 43 is dripped into the last remaining third sub-hole 33. Finally, three types of liquid crystals reflecting light of different wavelengths are arranged in one liquid crystal cell 200 at the same time.

[0075] In the related art, it is difficult to coat three types of liquid crystals in one liquid crystal box due to the limitation of the precision of liquid crystal dripping and the possible mixing between adjacent liquid crystals. At present, three liquid crystal boxes are stacked, but the display in this way is very thick, and the three liquid crystal boxes will absorb a certain amount of light, which reduces the utilization rate of light. In the above embodiment of the present invention, three liquid crystals that reflect light of different wavelengths can be arranged in the same liquid crystal box 200. Compared with the need to use three liquid crystal boxes 200 in the prior art, the thickness and weight of the electronic paper and the display device can be effectively reduced, and the electronic paper or display device produced has only one liquid crystal box 200 to absorb light, which can effectively improve the utilization rate of light energy.

[0076] Reference Figure 8 , Figure 8 This is a partial flow chart of the method for manufacturing a liquid crystal cell according to the second embodiment of the present invention. After step S500, the method further includes step S501:

[0077] Disposing a first protective layer 71 on the first liquid crystal 41 of the first sub-hole 31;

[0078] In order to avoid possible mixing when the second liquid crystal 42 and the third liquid crystal 43 are subsequently arranged, a first protective layer 71 is arranged on the first liquid crystal 41 to play a role of isolation and protection.

[0079] Reference Fig. 9 , Fig. 9 This is a partial flow chart of the method for manufacturing a liquid crystal cell according to the third embodiment of the present invention. The step S600 includes:

[0080] S601, disposing a second light shielding layer 82 in the second sub-hole 32, and disposing a light decomposing layer 50 in the third sub-hole 33;

[0081] Similar to the material and function of the first light shielding layer 81, the second light shielding layer 82 is also used to block the laser and prevent the light decomposition layer 50 (if any) in the second light shielding layer 82 from decomposing. The second light shielding layer 82 can be a black photoresist material formed on the hole wall of the second sub-hole 32 by coating and photolithography, which is mainly used to prevent light from passing through. The light decomposition layer 50 is formed on the inner wall surface of the third sub-hole 33 by film formation and photolithography, and can be decomposed under the irradiation of the laser. It should be noted that when the second sub-hole 32 and the third sub-hole 33 here are blind holes, the second light shielding layer 82 is set to completely cover the inner wall surface of the second sub-hole 32, and the light decomposition layer 50 is set on the inner wall surface of the third sub-hole 33 respectively. When the second sub-hole 32 and the third sub-hole 33 are receiving holes, at this time, the second light shielding layer 82 can completely cover the bottom wall and the side wall of the second receiving groove, that is, the inner wall surface of the second sub-hole 32, and the surface of the driving backplane 10 corresponding to the second sub-hole 32 to prevent the laser from passing through. The light decomposition layer 50 can be disposed on the bottom wall and the side wall of the third receiving groove. The second light shielding layer 81 can be made of black photoresist material and can also shield between pixels to prevent color mixing without preparing a black matrix for inter-pixel light shielding.

[0082] S602, adding the second liquid crystal 42 into the second sub-hole 32 and the third sub-hole 33 and solidifying the second liquid crystal 42;

[0083] After the second liquid crystal 42 is dripped, the second liquid crystal 42 can be made to flow into the second sub-hole 32 and the third sub-hole 33 by vibration or the like, and then the second liquid crystal 42 is solidified by cooling (to about -30 degrees).

[0084] S603, bonding the second liquid crystal 42 with the adhesive 60;

[0085] The cured second liquid crystal 42 is bonded using a weakly viscous adhesive 60 .

[0086] S604, using laser to irradiate from the side of the driving back plate 10 away from the pixel defining layer 20, so as to decompose the light decomposition layer 50 in the third sub-hole 33:

[0087] Since the light decomposition layer 50 is made of a material that can be decomposed under laser irradiation, the light decomposition layer 50 of the third sub-aperture 33 is decomposed under laser irradiation, so that the second liquid crystal 42 and the third sub-aperture 33 are separated and can be removed by the adhesive 60. However, since the adhesive 60 has a low viscosity, the light decomposition layer 50 is not provided in the second liquid crystal 42 or the light decomposition layer 50 is provided in the second liquid crystal 42 but is not decomposed due to the light shielding effect of the second light shielding layer 82, so the second liquid crystal 42 in the second sub-aperture 32 cannot be removed.

[0088] S605 , removing the adhesive member 60 to remove the second liquid crystal 42 in the third sub-hole 33 .

[0089] After the adhesive 60 is removed, the second liquid crystal 42 in the third sub-hole 33 is removed, so that only the second liquid crystal 42 remains in the second sub-hole 32. To avoid possible mixing when the third liquid crystal 43 is subsequently set, a second protective layer 72 is set on the second liquid crystal 42 to play an isolation and protection role.

[0090] In the above embodiment of the present invention, the second liquid crystal 42 can be arranged in the second sub-hole 32 by adopting similar steps, which is suitable for the application scenario of manufacturing multiple liquid crystals in the same liquid crystal box 200. The manufacturing method is simple and convenient, and it is not easy to produce the phenomenon of liquid crystal mixing.

[0091] Reference Fig.10 , Fig.10 This is a partial flow chart of the method for manufacturing a liquid crystal cell according to the fourth embodiment of the present invention. After step S605, the method further includes step S606:

[0092] A second protection layer 72 is disposed on the second liquid crystal 42 of the second sub-hole 32 .

[0093] In order to avoid possible mixing when the third liquid crystal 43 is subsequently arranged, a second protective layer 72 is arranged on the second liquid crystal 42 to play a role of isolation and protection.

[0094] Reference Fig.11 , Fig.11 FIG. 5 is a flow chart of a method for manufacturing a liquid crystal cell according to a fifth embodiment of the present invention. The steps of S700 include:

[0095] S701 , adding a third liquid crystal 43 into the third sub-hole 33 and solidifying the third liquid crystal 43 .

[0096] Since the third liquid crystal 43 is the last liquid crystal added, it does not need to be removed by the adhesive 60, so there is no need to set a shading layer. It is only necessary to drip the third liquid crystal 43 into the remaining third sub-hole 33 and solidify it. Of course, a third shading layer can also be set in the third sub-hole 33, and the second shading layer 81 can be made of black photoresist material, and then the third liquid crystal 43 is added. In this way, a shading layer is provided in all the receiving holes, which can play a role in shading between pixels to prevent color mixing, and there is no need to prepare a black matrix for shading between pixels. It should be noted that the first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 here can be but are not limited to reflecting one of the three colors of red, green and blue in natural light. Specifically:

[0097] The first liquid crystal 41 can be, but is not limited to, reflecting one of the three colors of red, green and blue in natural light, the second liquid crystal 42 can be, but is not limited to, reflecting one of the three colors of red, green and blue in natural light, and the reflected light of the second liquid crystal 42 is different from the reflected light of the first liquid crystal 41, and the third liquid crystal 43 can be, but is not limited to, reflecting one of the three colors of red, green and blue in natural light, and the reflected light of the third liquid crystal 43 is different from the reflected light of the first liquid crystal 41 and the reflected light of the second liquid crystal 42, thereby effectively realizing full-color display.

[0098] Reference Fig.12 , Fig.12 This is a partial flow chart of the method for manufacturing a liquid crystal cell according to the sixth embodiment of the present invention. After step S700, the method further includes the following steps:

[0099] S702 , disposing a third protection layer 73 on the third liquid crystal 43 of the third sub-hole 33 .

[0100] The protective layer is mainly used to prevent the third liquid crystal 43 from leaking out. The protective layer (the protective layer mentioned here refers to the first protective layer 71, the second protective layer 72 and the third protective layer 73) can be, but not limited to, organic or inorganic. For example, the inorganic material can be a protective film such as SiNx, SiO, etc. Among them, the surface of the first protective layer 71, the second protective layer 72 and the third protective layer 73 facing away from the driving backplane 10 can be, but not limited to, a horizontal or approximately horizontal plane, so that the protective layer can be closely attached to the common electrode 100, thereby achieving a good display effect for the electronic paper or display device. Specifically, the liquid crystal can be a cholesterol liquid crystal, also known as a cholesteric phase liquid crystal.

[0101] In the above-mentioned embodiment of the present invention, three different liquid crystals are produced in the same liquid crystal box 200, instead of the production method of using three liquid crystal boxes 200 in the prior art, which can further reduce the thickness of the electronic paper or display device and effectively improve the utilization rate of light energy.

[0102] Reference Fig.13 , Fig.13 The seventh embodiment of the present invention is a flow chart of the method for manufacturing a liquid crystal cell. The step S200 includes the step of setting a light decomposition layer 50 at least in the second sub-hole 32 and the third sub-hole 33, including S2001:

[0103] A light decomposition layer 50 is disposed in the second sub-hole 32 and the third sub-hole 33; or

[0104] Reference Fig.14 , Fig.14The process diagram of the manufacturing method of the liquid crystal box of the eighth embodiment of the present invention is shown in FIG. The step S200 includes the step of arranging the light decomposition layer 50 at least in the second sub-hole 32 and the third sub-hole 33, including S2002: arranging the light decomposition layer 50 in the first sub-hole 31, the second sub-hole 32 and the third sub-hole 33, wherein the light decomposition layer 50 in the first sub-hole 31 covers the upper surface of the first light shielding layer 81.

[0105] Combined with reference Figure 4 and Figure 5 Here, the light decomposition layer 50 can be set only in the second sub-hole 32 and the third sub-hole 33, because the first light shielding layer 81 is set on the first sub-hole 31 to prevent the laser from irradiating the liquid crystal. After the adhesive 60 is removed later, the first liquid crystal 41 in the first sub-hole 31 will still remain in the first sub-hole 31, which can save materials. In other embodiments, the light decomposition material can be directly formed on the entire surface, that is, the light decomposition layer 50 is also set in the first sub-hole 31. Due to the effect of the first light shielding layer 81, the light decomposition layer 50 located in the first sub-hole 31 will not be decomposed. After the adhesive 60 is removed later, the first liquid crystal 41 in the first sub-hole 31 will still remain in the first sub-hole 31. In this way, when designing and manufacturing the light decomposition layer 50, there is no need to perform photolithography patterning, which can save photolithography processes and reduce the complexity of the process. Of course, when the light decomposition layer 50 is provided, the light decomposition layer 50 is preferably made to completely cover the second sub-hole 32 and the third sub-hole 33, especially the openings of the second sub-hole 32 and the third sub-hole, so as to avoid the adhesive 60 from contacting the material without the light decomposition layer 50 and causing defects. Of course, the method of completely covering the light decomposition layer 50 requires that the liquid crystal material cannot be contaminated or reacted by the light decomposition material.

[0106] Reference Fig.15 , Fig.15 FIG. 1 is a flow chart of a method for manufacturing a liquid crystal cell according to a ninth embodiment of the present invention. In step S200, the step of providing a light decomposition layer 50 at least in the second sub-hole 32 and the third sub-hole 33 includes S203:

[0107] An organic material photodecomposition layer 50 or an inorganic material photodecomposition layer 50 that can be decomposed by laser light is provided at least in the second sub-hole 32 and the third sub-hole 33 by film formation and photolithography processes.

[0108] Organic materials may be PI (polyimide, English full name: Polyimide), PMMA (polymethyl methacrylate, English full name: Polymethyl Methacrylate), and inorganic materials may be gallium nitride GaN, etc. During production, the light decomposition layer 50 is made to completely cover the opening as much as possible. The light decomposition layer 50 produced by the above materials and process is simple to produce and has low production cost.

[0109] In some embodiments, the adhesive member 60 includes a transfer plate 61 and a plurality of adhesive materials 62 spaced apart on the transfer plate 61. The steps of bonding the adhesive member 60 to the first liquid crystal 41 include:

[0110] The plurality of adhesive materials 62 are bonded to the plurality of first liquid crystals 41 in correspondence thereto.

[0111] The viscous material 62 can be made of a weakly viscous material PDMS (polydimethylsiloxane). The transfer plate 61 is provided with a plurality of viscous materials 62 arranged at intervals, and the setting position of the viscous material 62 corresponds to the position setting of the liquid crystal, so that the viscous material 62 can be bonded to the liquid crystal accordingly, and the liquid crystal to be removed can be removed by bonding later.

[0112] Reference Fig.16 According to another aspect of the present invention, the present invention further provides a liquid crystal box 200, which is made by the above-mentioned liquid crystal box manufacturing method. The liquid crystal box 200 includes a driving backplane 10, a plurality of liquid crystals and a pixel defining layer 20 arranged on the driving backplane 10, and the pixel defining layer 20 is formed with a plurality of spaced-apart accommodating holes, and one of the plurality of liquid crystals is arranged in each accommodating hole.

[0113] Specifically, the receiving hole may include a first sub-hole 31, a second sub-hole 32 and a third sub-hole 33, each of which includes a plurality of holes, and the liquid crystal includes a first liquid crystal 41, a second liquid crystal 42 and a third liquid crystal 43. The first sub-hole 31 is used to accommodate the first liquid crystal 41, the second sub-hole 32 is used to accommodate the second liquid crystal 42, and the third sub-hole 33 is used to accommodate the third liquid crystal 43. The wavelengths of light reflected by the first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 are different. Therefore, the first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 present different colors, thereby enabling the electronic paper and the display device to achieve color display. In some embodiments, the molecules of the liquid crystal have a certain pitch. By using liquid crystals with different pitches, light of different wavelengths in natural light can be reflected, thereby enabling the liquid crystal to present different colors. In the above embodiments, three liquid crystals reflecting light of different wavelengths can be set in the same liquid crystal box 200. Compared with the prior art which requires the use of three liquid crystal boxes 200, the thickness and weight of the electronic paper and the display device can be effectively reduced, and the electronic paper or display device manufactured has only one liquid crystal box 200 to absorb light, which can effectively improve the utilization rate of light energy. The first liquid crystal 41, the second liquid crystal 42 and the third liquid crystal 43 can be liquid crystals that reflect red, green and blue light respectively.

[0114] In some embodiments, a light shielding layer is provided on the inner wall surface of the receiving hole. Specifically, a first light shielding layer 81 is provided on the inner wall surface of the first sub-hole 31, a second light shielding layer 82 is provided on the inner wall surface of the second sub-hole 32, and a third light shielding layer 83 is provided on the inner wall surface of the third sub-hole 33. The first light shielding layer 81, the second light shielding layer 82 and the third light shielding layer 83 can be made of black photoresist material, and can also play a role in shielding between pixels to prevent color mixing, without the need to prepare a black matrix for inter-pixel light shielding.

[0115] In some embodiments, the shape of the receiving hole can be a trumpet shape, and the size of the receiving hole gradually increases from the end close to the driving back plate 10 to the end away from the driving back plate 10, which is equivalent to setting the opening size of the receiving hole on the side where the liquid crystal is dripped into the liquid crystal to be larger, so as to facilitate the dripping of the liquid crystal into the receiving hole. On the other hand, it is convenient to remove the solidified liquid crystal through the adhesive 60 during the manufacturing process.

[0116] In some embodiments, the liquid crystal box 200 further includes an upper substrate 90 and a common electrode 100 disposed on the upper substrate 90 . The common electrode 100 may be made of indium tin oxide and is electrically connected to the first protective layer 71 , the second protective layer 72 and the third protective layer 73 .

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and do not limit the patent scope of the present invention; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that under the technical concept of the present invention, the technical solutions recorded in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; or directly / indirectly applied to other related technical fields, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for manufacturing a liquid crystal cell, characterized in that: The method for manufacturing the liquid crystal cell comprises the following steps: A driving backplane is provided, on which a pixel defining layer is arranged, and a plurality of spaced accommodating holes are formed on the pixel defining layer; wherein the accommodating holes include a first sub-hole, a second sub-hole and a third sub-hole; A first light shielding layer is arranged in the first sub-hole, and a light decomposition layer is arranged in at least the second sub-hole and the third sub-hole; Adding a first liquid crystal into the receiving hole and solidifying the first liquid crystal, and bonding the first liquid crystal with an adhesive; Using laser to irradiate from a side of the driving back plate away from the pixel defining layer to decompose the light decomposition layer in the second sub-hole and the third sub-hole; removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole; A second light shielding layer is arranged in the second sub-hole, and a light decomposition layer is arranged in the third sub-hole; Adding a second liquid crystal into the second sub-hole and the third sub-hole and solidifying the second liquid crystal; Adhere to the second liquid crystal by using an adhesive; A laser is used to irradiate from a side of the driving back plate away from the pixel defining layer to decompose the light decomposition layer in the third sub-hole: removing the adhesive member to remove the second liquid crystal in the third sub-hole; Adding a third liquid crystal into the third sub-hole and solidifying the third liquid crystal; The first liquid crystal, the second liquid crystal, and the third liquid crystal are used to reflect light of different wavelengths.

2. The method for manufacturing a liquid crystal cell according to claim 1, characterized in that: After the step of removing the adhesive to remove the first liquid crystal in the second sub-hole and the third sub-hole, the method further includes the following steps: A first protection layer is disposed on the first liquid crystal of the first sub-hole.

3. The method for manufacturing a liquid crystal cell according to claim 1, characterized in that: After the step of removing the adhesive component to remove the second liquid crystal in the third sub-hole, the method further includes the following steps: A second protection layer is disposed on the second liquid crystal of the second sub-hole.

4. The method for manufacturing a liquid crystal cell according to claim 1, characterized in that: After the step of adding the third liquid crystal into the third sub-hole and solidifying the third liquid crystal, the step further includes: A third protection layer is disposed on the third liquid crystal of the third sub-hole.

5. The method for manufacturing a liquid crystal cell according to any one of claims 1 to 4, characterized in that: The step of providing a light decomposition layer at least in the second sub-hole and the third sub-hole comprises: Disposing a light decomposition layer in the second sub-hole and the third sub-hole; or, A light decomposition layer is disposed in the first sub-hole, the second sub-hole and the third sub-hole, wherein the light decomposition layer in the first sub-hole covers the upper surface of the first light shielding layer.

6. The method for manufacturing a liquid crystal cell according to any one of claims 1 to 4, characterized in that: The step of providing a light decomposition layer at least in the second sub-hole and the third sub-hole comprises: An organic material photodecomposable layer or an inorganic material photodecomposable layer that can be decomposed under laser light is provided at least in the second sub-hole and the third sub-hole through film formation and photolithography processes.

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