Black and white TN type small optical path difference paper white liquid crystal display and manufacturing method thereof

Abstract

The invention discloses a black and white TN type small optical path difference paper white liquid crystal display and a manufacturing method thereof, and relates to the technical field of liquid crystal displayers, the black and white TN type small optical path difference paper white liquid crystal display comprises an upper polaroid, upper IT glass, an upper PI orientation layer, a liquid crystal layer and a lower polaroid, the upper IT glass is attached to the surface of one side of the upper polaroid, lower ITO glass is attached to the surface of the side close to the lower polaroid, and the lower PI orientation layer is attached to the surface of the other side close to the lower polaroid. An upper PI orientation layer is arranged on the surface of the remaining side of the upper IT glass, and a lower PI orientation layer is arranged on the surface of the remaining side of the lower ITO glass. The display has the advantages of low power consumption, no backlight, whiter background color and better contrast ratio, the box thickness of the liquid crystal box is 8 microns, the optical path difference of the liquid crystal box is controlled to be delta n * d = 800nm (delta n = 0.1), the size of the optical path difference is the product of the refractive index anisotropy delta n of liquid crystal molecules and the box thickness d of the liquid crystal box, the visual sense of dazzling does not appear in each visual angle direction, and the visual effect is good. A transmission sheet and a reflection sheet which are in accordance with outdoor application durability are pasted by adopting left-hand twisting of 90 degrees with the box thickness of 8 microns.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display, and in particular to a black-and-white TN type small optical path difference paper-white liquid crystal display and a manufacturing method thereof. Background Art

[0002] TN panel, full name Twisted Nematic panel, is a type of display screen. Due to its low production cost, TN has become the most widely used entry-level LCD panel and is widely used in mainstream mid- and low-end LCD monitors on the market.

[0003] Traditional black and white TN type display has entered the bottleneck stage. It is difficult to achieve cost, low power consumption, no backlight, reflective, high contrast, conventional TN mode is mostly right-handed distortion, and there is a glare visual feeling when changing the viewing angle during viewing. Durable transmission and reflection sheets can be used externally. Therefore, a black and white TN type small optical path difference paper white LCD display is needed. Summary of the invention

[0004] The main purpose of the present invention is to provide a black and white TN type small optical path difference paper-white liquid crystal display and a manufacturing method thereof, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A black-and-white TN type small optical path difference paper-white liquid crystal display comprises an upper polarizer, an upper IT glass, an upper PI orientation layer, a liquid crystal layer and a lower polarizer, wherein the upper IT glass is attached to one side surface of the upper polarizer, the lower ITO glass is attached to the side surface close to the lower polarizer, an upper PI orientation layer is provided on the remaining side surface of the upper IT glass, a lower PI orientation layer is provided on the remaining side surface of the lower ITO glass, a liquid crystal layer is provided between the upper PI orientation layer and the lower PI orientation layer, and the liquid crystal layer is filled with liquid crystal and a spacer.

[0007] Preferably, the liquid crystals are uniformly staggered.

[0008] Preferably, the outer surfaces of the liquid crystal layer and the lower PI alignment layer are wrapped and attached with frame glue.

[0009] A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display, the method comprising the following steps:

[0010] The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying.

[0011] The second step is to etch and remove the film. Use an etcher to etch and remove the film.

[0012] The third step is PI curing. Use 4.4% PI liquid to coat the ITO glass in a low temperature environment, and then cure the coated ITO glass in a 250 degree Celsius environment.

[0013] The fourth step is directional friction, using a special polishing machine for directional friction.

[0014] The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained.

[0015] The sixth step is pouring, placing the ITO glass after directional rubbing in the closing box and filling it with liquid crystal.

[0016] The seventh step is to close the box and seal it by pressing the box.

[0017] The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection.

[0018] The ninth step is to slice and then bond the chips. After slicing with a special cutter, bond the chips to the outside of the liquid crystal layer (4).

[0019] Preferably, the curing time in step three is 1 hour.

[0020] Preferably, in step 4, spraying gasket material is used, the powder diameter in the box is 8 microns, and the number of powder spraying is 40±15 pieces / mm2.

[0021] Preferably, in step seven, the pressure of the pressure box is 0.25 MPa*600s, and the glue penetration pressure is 0.02 MPa*60s.

[0022] Preferably, in step nine, conventional left-handed TN-type slicing is adopted.

[0023] Preferably, in step six, a vacuum pump is used for 1500 seconds, and the liquid crystal filling time is about 1800 seconds.

[0024] Preferably, the etching speed in step 2 is 7.0 m / min.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This black and white TN reflective LCD display has the advantages of low power consumption and no backlight. Its background color is whiter and has better contrast than traditional displays.

[0027] 2. The black-and-white TN reflective liquid crystal display adopts a liquid crystal box with a thickness of 8 microns. The optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The cell thickness of 8 microns is left-handedly twisted by 90°, and the patch meets the requirements of transmission film and reflection film for outdoor application durability.

[0028] 3. The device realizes TN paper-white display and can be used in dashboards of outdoor sports vehicles, etc. It solves the problems of low power consumption for outdoor use, reflective backlight-free, black and white display, whiter background, higher contrast, and maintains the characteristics of existing products. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a black-and-white TN type small optical path difference paper-white liquid crystal display according to the present invention;

[0030] Figure 2 It is a schematic diagram of the front view structure of a black-and-white TN type small optical path difference paper-white liquid crystal display of the present invention;

[0031] Figure 3 The present invention is a flow chart of a method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display.

[0032] In the figure: 1. upper polarizer; 2. upper ITO glass; 3. upper PI orientation layer; 4. liquid crystal layer; 5. frame glue; 6. gasket; 7. liquid crystal; 8. lower PI orientation layer; 9. lower ITO glass; 10. lower polarizer. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Example 1

[0035] like Figure 1-3 As shown, a black-and-white TN type small optical path difference paper-white liquid crystal display comprises an upper polarizer 1, an upper ITO glass 2, an upper PI orientation layer 3, a liquid crystal layer 4 and a lower polarizer 10, wherein the upper ITO glass 2 is attached to one side surface of the upper polarizer 1, the lower ITO glass 9 is attached to the side surface of the lower polarizer 10 close to 19, the upper PI orientation layer 3 is provided on the remaining side surface of the upper ITO glass 2, the lower PI orientation layer 8 is provided on the remaining side surface of the lower ITO glass 9, a liquid crystal layer 4 is provided between the upper PI orientation layer 3 and the lower PI orientation layer 8, and the liquid crystal layer 4 is filled with liquid crystal 7 and a spacer 6.

[0036] In this embodiment, the 6 and the liquid crystal 7 are evenly staggered; the outer surfaces of the 3, the liquid crystal layer 4 and the lower PI alignment layer 8 are wrapped and attached with a frame glue 5.

[0037] Specifically, the black-and-white TN reflective liquid crystal display has low power consumption, no backlight, a whiter background color, and a better contrast.

[0038] A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display, the method comprising the following steps:

[0039] The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying.

[0040] The second step is etching to remove the film. A practical etcher is used to etch and remove the film. The etching speed is 7.0m / min.

[0041] The third step is PI curing. Use 4.4% PI liquid to coat the ITO glass in a low temperature environment, and then cure the coated ITO glass in a 250 degree Celsius environment.

[0042] The fourth step is directional friction, using a special polishing machine for directional friction.

[0043] The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained.

[0044] The sixth step is infusion. Place the ITO glass after directional friction in the box and fill it with liquid crystal. Use a vacuum pump with a pumping time of 1500s. The liquid crystal filling time is about 1800s.

[0045] The seventh step is to close the box and seal it. The box is sealed by pressing the box. The LCD screen is applied with static pressure through the pressing and leveling device to ensure that the LCD screen is pressed flat.

[0046] The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection.

[0047] The ninth step is to slice and then paste the chips. After slicing with a special cutter, paste the chips on the outside of the liquid crystal layer 4.

[0048] In this embodiment, the curing time in step three is 1 hour; in step four, spray gasket is used, the powder diameter in the box is 8 microns, and the number of powder sprays is 30 pieces / mm2; in step seven, the box pressure is 0.25MPa*600s, and the glue penetration pressure is 0.02MPa*60s; in step nine, conventional left-handed TN type slicing is adopted.

[0049] Specifically, the black-and-white TN reflective liquid crystal display adopts a liquid crystal box with a thickness of 8 microns, and the optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The 8-micron box thickness is twisted 90° to the left, and the patch meets the requirements of transmission film and reflection film for outdoor application durability.

[0050] The above is an embodiment of the powder spraying quantity of 30 pieces / mm2.

[0051] Example 2

[0052] like Figure 1-3 As shown, a black-and-white TN type small optical path difference paper-white liquid crystal display comprises an upper polarizer 1, an upper ITO glass 2, an upper PI orientation layer 3, a liquid crystal layer 4 and a lower polarizer 10, wherein the upper ITO glass 2 is attached to one side surface of the upper polarizer 1, the lower ITO glass 9 is attached to the side surface of the lower polarizer 10 close to 19, the upper PI orientation layer 3 is provided on the remaining side surface of the upper ITO glass 2, the lower PI orientation layer 8 is provided on the remaining side surface of the lower ITO glass 9, a liquid crystal layer 4 is provided between the upper PI orientation layer 3 and the lower PI orientation layer 8, and the liquid crystal layer 4 is filled with liquid crystal 7 and a spacer 6.

[0053] In this embodiment, the 6 and the liquid crystal 7 are evenly staggered; the outer surfaces of the 3, the liquid crystal layer 4 and the lower PI alignment layer 8 are wrapped and attached with a frame glue 5.

[0054] Specifically, the black-and-white TN reflective liquid crystal display has low power consumption, no backlight, a whiter background color, and a better contrast.

[0055] A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display, the method comprising the following steps:

[0056] The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying.

[0057] The second step is etching to remove the film. A practical etcher is used to etch and remove the film. The etching speed is 7.0m / min.

[0058] The third step is PI curing. Use 4.4% PI liquid to coat the ITO glass in a low temperature environment, and then cure the coated ITO glass in a 250 degree Celsius environment.

[0059] The fourth step is directional friction, using a special polishing machine for directional friction.

[0060] The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained.

[0061] The sixth step is infusion. Place the ITO glass after directional friction in the box and fill it with liquid crystal. Use a vacuum pump with a pumping time of 1500s. The liquid crystal filling time is about 1800s.

[0062] The seventh step is to close the box and seal it. The box is sealed by pressing the box. The LCD screen is applied with static pressure through the pressing and leveling device to ensure that the LCD screen is pressed flat.

[0063] The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection.

[0064] The ninth step is to slice and then paste the chips. After slicing with a special cutter, paste the chips on the outside of the liquid crystal layer 4.

[0065] In this embodiment, the curing time in step three is 1 hour; in step four, spray gasket is used, the powder diameter in the box is 8 microns, and the number of powder sprays is 40 pieces / mm2; in step seven, the box pressure is 0.25MPa*600s, and the glue penetration pressure is 0.02MPa*60s; in step nine, conventional left-handed TN type slicing is adopted.

[0066] Specifically, the black-and-white TN reflective liquid crystal display adopts a liquid crystal box with a thickness of 8 microns, and the optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The 8-micron box thickness is twisted 90° to the left, and the patch meets the requirements of transmission film and reflection film for outdoor application durability.

[0067] The above is an embodiment of the powder spraying quantity of 40 pieces / mm2.

[0068] Example 3

[0069] like Figure 1-3 As shown, a black-and-white TN type small optical path difference paper-white liquid crystal display comprises an upper polarizer 1, an upper ITO glass 2, an upper PI orientation layer 3, a liquid crystal layer 4 and a lower polarizer 10, wherein the upper ITO glass 2 is attached to one side surface of the upper polarizer 1, the lower ITO glass 9 is attached to the side surface of the lower polarizer 10 close to 19, the upper PI orientation layer 3 is provided on the remaining side surface of the upper ITO glass 2, the lower PI orientation layer 8 is provided on the remaining side surface of the lower ITO glass 9, a liquid crystal layer 4 is provided between the upper PI orientation layer 3 and the lower PI orientation layer 8, and the liquid crystal layer 4 is filled with liquid crystal 7 and a spacer 6.

[0070] In this embodiment, the 6 and the liquid crystal 7 are evenly staggered; the outer surfaces of the 3, the liquid crystal layer 4 and the lower PI alignment layer 8 are wrapped and attached with a frame glue 5.

[0071] Specifically, the black-and-white TN reflective liquid crystal display has low power consumption, no backlight, a whiter background color, and a better contrast.

[0072] A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display, the method comprising the following steps:

[0073] The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying.

[0074] The second step is etching to remove the film. A practical etcher is used to etch and remove the film. The etching speed is 7.0m / min.

[0075] The third step is PI curing. Use 4.4% PI liquid to coat the ITO glass in a low temperature environment, and then cure the coated ITO glass in a 250 degree Celsius environment.

[0076] The fourth step is directional friction, using a special polishing machine for directional friction.

[0077] The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained.

[0078] The sixth step is infusion. Place the ITO glass after directional friction in the box and fill it with liquid crystal. Use a vacuum pump with a pumping time of 1500s. The liquid crystal filling time is about 1800s.

[0079] The seventh step is to close the box and seal it. The box is sealed by pressing the box. The LCD screen is applied with static pressure through the pressing and leveling device to ensure that the LCD screen is pressed flat.

[0080] The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection.

[0081] The ninth step is to slice and then paste the chips. After slicing with a special cutter, paste the chips on the outside of the liquid crystal layer 4.

[0082] In this embodiment, the curing time in step three is 1 hour; in step four, spray gasket material is used, the powder diameter in the box is 8 microns, and the number of powder sprays is 50 pieces / mm2; in step seven, the box pressure is 0.25MPa*600s, and the glue penetration pressure is 0.02MPa*60s; in step nine, conventional left-handed TN type slicing is adopted.

[0083] Specifically, the black-and-white TN reflective liquid crystal display adopts a liquid crystal box with a thickness of 8 microns, and the optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The 8-micron box thickness is twisted 90° to the left, and the patch meets the requirements of transmission film and reflection film for outdoor application durability.

[0084] The above is an embodiment of the powder spraying quantity of 50 pieces / mm2.

[0085] Example 4

[0086] like Figure 1-3 As shown, a black-and-white TN type small optical path difference paper-white liquid crystal display comprises an upper polarizer 1, an upper ITO glass 2, an upper PI orientation layer 3, a liquid crystal layer 4 and a lower polarizer 10, wherein the upper ITO glass 2 is attached to one side surface of the upper polarizer 1, the lower ITO glass 9 is attached to the side surface of the lower polarizer 10 close to 19, the upper PI orientation layer 3 is provided on the remaining side surface of the upper ITO glass 2, the lower PI orientation layer 8 is provided on the remaining side surface of the lower ITO glass 9, a liquid crystal layer 4 is provided between the upper PI orientation layer 3 and the lower PI orientation layer 8, and the liquid crystal layer 4 is filled with liquid crystal 7 and a spacer 6.

[0087] In this embodiment, the 6 and the liquid crystal 7 are evenly staggered; the outer surfaces of the 3, the liquid crystal layer 4 and the lower PI alignment layer 8 are wrapped and attached with a frame glue 5.

[0088] Specifically, the black-and-white TN reflective liquid crystal display has low power consumption, no backlight, a whiter background color, and a better contrast.

[0089] A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display, the method comprising the following steps:

[0090] The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying.

[0091] The second step is etching to remove the film. A practical etcher is used to etch and remove the film. The etching speed is 7.0m / min.

[0092] The third step is PI curing. Use 4.4% PI liquid to coat the ITO glass in a low temperature environment, and then cure the coated ITO glass in a 250 degree Celsius environment.

[0093] The fourth step is directional friction, using a special polishing machine for directional friction.

[0094] The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained.

[0095] The sixth step is infusion. Place the ITO glass after directional friction in the box and fill it with liquid crystal. Use a vacuum pump with a pumping time of 1500s. The liquid crystal filling time is about 1800s.

[0096] The seventh step is to close the box and seal it. The box is sealed by pressing the box. The LCD screen is applied with static pressure through the pressing and leveling device to ensure that the LCD screen is pressed flat.

[0097] The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection.

[0098] The ninth step is to slice and then paste the chips. After slicing with a special cutter, paste the chips on the outside of the liquid crystal layer 4.

[0099] In this embodiment, the curing time in step three is 1 hour; in step four, spray gasket is used, the powder diameter in the box is 8 microns, and the number of spray powders is 55 / mm2; in step seven, the box pressure is 0.25MPa*600s, and the glue penetration pressure is 0.02MPa*60s; in step nine, conventional left-handed TN type slicing is adopted.

[0100] Specifically, the black-and-white TN reflective liquid crystal display adopts a liquid crystal box with a thickness of 8 microns, and the optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The 8-micron box thickness is twisted 90° to the left, and the patch meets the requirements of transmission film and reflection film for outdoor application durability.

[0101] The above is an embodiment of the powder spraying quantity of 55 pieces / mm2.

[0102] Working principle: The black-and-white TN reflective liquid crystal display has low power consumption, no backlight, whiter background color and better contrast; the black-and-white TN reflective liquid crystal display adopts 8 microns in the thickness of the liquid crystal box, and the optical path difference of the liquid crystal box is controlled at δn*d=800nm ​​(δn=0.1), which is the product of the refractive index anisotropy δn of the liquid crystal molecules and the thickness d of the liquid crystal box. There will be no dazzling visual feeling in all viewing directions. The 8-micron thick box is twisted 90° to the left, and the patch is a transmission sheet and a reflection sheet that meet the durability of outdoor applications. The device realizes TN paper white display and can be used in the instrument panel of outdoor sports cars, etc., solving the problems of low power consumption for outdoor use, reflective type without backlight, black and white display, whiter background color, higher contrast, and maintaining the characteristics of existing products.

[0103] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0104] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A black and white TN type small optical path difference paper white liquid crystal display, characterized in that: The invention comprises an upper polarizer (1), an upper ITO glass (2), an upper PI orientation layer (3), a liquid crystal layer (4) and a lower polarizer (10), wherein the upper ITO glass (2) is attached to one side surface of the upper polarizer (1), the lower ITO glass (9) is attached to the side surface of the lower polarizer (10) close to (19), the upper PI orientation layer (3) is provided on the remaining side surface of the upper ITO glass (2), the lower PI orientation layer (8) is provided on the remaining side surface of the lower ITO glass (9), a liquid crystal layer (4) is provided between the upper PI orientation layer (3) and the lower PI orientation layer (8), and the liquid crystal layer (4) is filled with liquid crystal (7) and a spacer (6).

2. A black and white TN type small optical path difference paper white liquid crystal display according to claim 1, characterized in that: The (6) and liquid crystal (7) are evenly and staggeredly arranged.

3. The black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 1, characterized in that: The outer surfaces of the (3), the liquid crystal layer (4) and the lower PI alignment layer (8) are wrapped and attached with a frame glue (5).

4. A method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to any one of claims 1 to 3, characterized in that: The method for manufacturing the black-and-white TN type small optical path difference paper-white liquid crystal display comprises the following steps: The first step is pre-PR cleaning, using ITO glass, then IR-UV-CP cleaning, applying photoresist on the surface, and exposing and developing after drying; The second step is etching and removing the film, using an etching machine to etch and remove the film; The third step is PI curing. In a low temperature environment, PI liquid with a concentration of 4.4% is used to coat the ITO glass. Then the coated ITO glass is cured in an environment of 250 degrees Celsius. The fourth step is directional friction, using a special polishing machine for directional friction; The fifth step is liquid crystal configuration. The liquid crystal is configured with δn=0.

10. According to the existing conditions, δn=0.09 and δn=0.11 are selected. According to δn=5:5, δn=0.10 is configured, and δn*d=800nm ​​is obtained. The sixth step is to pour, place the ITO glass after directional rubbing in the closing box and fill it with liquid crystal; The seventh step is to close the box and seal it by pressing the box; The eighth step is photoelectric inspection, using special photoelectric equipment for quality inspection; The ninth step is to slice and then bond the chips. After slicing with a special cutter, bond the chips to the outside of the liquid crystal layer (4).

5. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: The curing time in step 3 is 1 hour.

6. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: In step 4, spray gasket material is used, the powder diameter in the box is 8 microns, and the number of powder sprays is 40±15 pieces / mm2.

7. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: In step seven, the pressure of the medium-pressure box is 0.25MPa*600s, and the glue penetration pressure is 0.02MPa*60s.

8. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: In step nine, conventional left-handed TN-type slicing is used.

9. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: In step six, a vacuum pump is used for 1500 seconds, and the liquid crystal is filled for about 1800 seconds.

10. The method for manufacturing a black-and-white TN type small optical path difference paper-white liquid crystal display according to claim 4, characterized in that: The etching speed in step 2 is 7.0 m / min.

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