Liquid crystal box pressing device
Through the light-transmitting part and adjustment mechanism of the liquid crystal box pressing device, combined with the support structure and air pressure adjustment, the problem of difficult to control the thickness uniformity of the LCOS liquid crystal box is solved, and a more uniform pressing effect is achieved.
Patent Information
- Application Number
- CN202420449717.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The thickness uniformity of the LCOS liquid crystal box is difficult to control during the pressing process, resulting in the problems of low intermediate box thickness and high surrounding box thickness, and it is difficult for the prior art to achieve uniformity control.
Provide a liquid crystal box pressing device, which detects light through the light transmitting part and observes the Newtonian ring, adjusts the distance and pressing time between the pressing platform and the airbag assembly, and uses a support structure and a pressure adjustment mechanism to ensure the thickness of the liquid crystal box. Uniformity.
It effectively reduces the difficulty of controlling the thickness uniformity of the liquid crystal box, improves the uniformity of the pressing process, and ensures the thickness consistency of the liquid crystal box.
Smart Images
Figure CN222259757U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of liquid crystal display packaging, and in particular to a liquid crystal box pressing device. Background Art
[0002] Liquid Crystal on Silicon (LCOS) is a reflective micro-display device. Compared with transmissive liquid crystal, it has the advantages of small size, high resolution and high light utilization rate (high aperture ratio). In particular, the pure phase modulation LCoS spatial light modulator has extremely important applications in optical communications, digital holography, microscopic optics and other fields because it can flexibly and conveniently modulate the wavefront of light waves. It is the core component of wavelength selective switches, maskless lithography systems, and holographic optical tweezers systems.
[0003] The preparation of LCOS devices is more difficult than that of traditional transmissive liquid crystal devices. The main difficulty lies in the smaller size of LCOS devices and the higher alignment and bonding accuracy requirements of ITO glass and silicon substrate. Furthermore, the sealant for sealing liquid crystal is narrower (about 500um), and spacers of a certain diameter are mixed in it, making it more difficult to control the uniformity of the liquid crystal box during the process. Summary of the invention
[0004] Based on this, it is necessary to provide a liquid crystal box pressing device to address the problem that the uniformity of the liquid crystal box is difficult to control.
[0005] In a first aspect, the present application provides a liquid crystal box pressing device, comprising:
[0006] Base;
[0007] An airbag assembly is arranged on one side of the base;
[0008] A pressing platform is provided on a side of the airbag assembly away from the base; an accommodation space is formed between the pressing platform and the airbag assembly, and the accommodation space is used to accommodate the liquid crystal box to be pressed; and
[0009] An adjusting mechanism, disposed on the base and movably connected to the pressing platform, the adjusting mechanism being used to adjust the distance between the pressing platform and the airbag assembly;
[0010] Wherein, a light-transmitting portion is provided on the pressing platform, and the light-transmitting portion is configured to allow detection light to pass through so that the detection light illuminates the liquid crystal box, and an operator can observe the Newton rings of the liquid crystal box with the help of the light-transmitting portion.
[0011] In one embodiment, a mounting hole is provided on the pressing platform, and the mounting hole penetrates the pressing platform from a side of the pressing platform close to the airbag assembly to a side of the pressing platform away from the airbag assembly;
[0012] The light-transmitting portion is embedded in the mounting hole.
[0013] In one of the embodiments, a surface of the light-transmitting portion close to the airbag assembly is flush with a surface of the pressing platform close to the airbag assembly.
[0014] In one embodiment, the adjustment mechanism comprises:
[0015] A guide rod, one end of which is connected to the base, and the other end of which extends toward the direction close to the pressing platform; a guide hole is provided on the pressing platform, and the guide rod is inserted into the guide hole; and
[0016] An adjusting member is arranged on the guide rod and is located on a side of the pressing platform away from the base; the adjusting member abuts against the pressing platform and is used to adjust the distance between the pressing platform and the airbag assembly.
[0017] In one embodiment, the adjusting member is a telescopic mechanism, one end of the telescopic mechanism abuts against the pressing platform, and the other end of the telescopic mechanism is connected to the adjusting member.
[0018] In one of the embodiments, the liquid crystal box pressing device further comprises a supporting structure, wherein the supporting structure is arranged between the airbag assembly and the pressing platform, and a side of the supporting structure away from the airbag assembly is used for contacting the liquid crystal box to be pressed.
[0019] In one embodiment, the support structure comprises:
[0020] A support member, a side surface of which is used to contact the airbag assembly;
[0021] The spacer paper is arranged on a side of the support member away from the airbag assembly; a surface of the spacer paper on a side away from the support member is used to contact the liquid crystal box to be pressed.
[0022] In one embodiment, there are multiple adjustment mechanisms, and the multiple adjustment mechanisms are symmetrically arranged.
[0023] In one of the embodiments, the liquid crystal box pressing device further includes a light source component, and the light source component is used to emit detection light.
[0024] In one of the embodiments, the liquid crystal box pressing device further includes an air pressure regulating mechanism, and the air pressure regulating mechanism is connected to the airbag assembly.
[0025] The liquid crystal box pressing device provided in the embodiment of the present application allows an operator to irradiate the detection light to the liquid crystal box through the light-transmitting portion and observe the Newton's rings of the liquid crystal box during the pressing process of the liquid crystal box. Furthermore, the operator can adjust the pressing pressure (i.e., the distance between the pressing platform and the airbag assembly) and the pressing time by the number of Newton's rings, which is beneficial to control the thickness and uniformity of the liquid crystal box, thereby reducing the difficulty of controlling the uniformity of the liquid crystal box. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 A schematic structural diagram of a liquid crystal box pressing device provided in one embodiment of the present application.
[0028] Figure 2 A schematic structural diagram of another liquid crystal box pressing device provided in one embodiment of the present application.
[0029] Figure 3 A schematic diagram of another liquid crystal box pressing device provided by an embodiment of the present application when in use.
[0030] Figure 4 An embodiment of the present application provides Figure 1 A top view of the pressing platform of the liquid crystal box pressing device is shown.
[0031] Figure 5 A schematic diagram of the distribution of thickness measurement points on a liquid crystal box provided in an embodiment of the present application.
[0032] Description of reference numerals:
[0033] 1. Liquid crystal box pressing device; 11. Base; 12. Airbag assembly; 13. Pressing platform; 131. Mounting hole; 132. Guide hole; 14. Adjustment mechanism; 141. Guide rod; 142. Adjustment member; 1421. Telescopic end; 1422. Fixed end; 15. Light-transmitting part; 16. Light source member; 17. Air pressure adjustment mechanism; 18. Support structure; 181. Support member; 182. Spacer paper; 2. Liquid crystal box; 21. Thickness measurement point. DETAILED DESCRIPTION
[0034] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0036] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.
[0037] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, in this specification, the term "and / or" includes any and all combinations of the relevant listed items.
[0038] In the prior art, since there is no padding support in the middle of the LCOS liquid crystal box, after lamination, it is easy for the middle box thickness to be low and the surrounding boxes to be high, resulting in poor thickness uniformity of the LCOS liquid crystal box. In addition, during the lamination process, it is difficult to control the thickness uniformity of the LCOS liquid crystal box.
[0039] In view of the above problems, an embodiment of the present application provides a liquid crystal box pressing device. During the process of pressing the liquid crystal box, the operator can irradiate the detection light to the liquid crystal box through the light-transmitting portion and observe the Newton's rings of the liquid crystal box. Furthermore, the operator can adjust the pressing pressure (i.e., the distance between the pressing platform and the airbag assembly) and the pressing time according to the number of Newton's rings, which is beneficial to control the thickness and uniformity of the liquid crystal box, thereby reducing the difficulty of controlling the uniformity of the liquid crystal box.
[0040] First, refer to Figure 1 As shown, the present application provides a liquid crystal box pressing device 1, which includes a base 11, an airbag assembly 12, a pressing platform 13 and an adjustment mechanism 14. The airbag assembly 12 is arranged on one side of the base 11. The pressing platform 13 is arranged on the side of the airbag assembly 12 away from the base 11; an accommodating space is formed between the pressing platform 13 and the airbag assembly 12, and the accommodating space is used to accommodate the liquid crystal box 2 to be pressed; the adjustment mechanism 14 is arranged on the base 11 and is movably connected to the pressing platform 13, and the adjustment mechanism 14 is used to adjust the distance between the pressing platform 13 and the airbag assembly 12.
[0041] The pressing platform 13 is provided with a light-transmitting portion 15 , which is configured to transmit the detection light so that the detection light illuminates the liquid crystal box 2 , and the operator can observe the Newton rings of the liquid crystal box 2 with the help of the light-transmitting portion 15 .
[0042] It can be understood that the adjustment mechanism 14 is used to adjust the pressing pressure between the pressing platform 13 and the airbag assembly 12. When the distance between the pressing platform 13 and the airbag assembly 12 is smaller, the pressing pressure is greater, and when the distance between the pressing platform 13 and the airbag assembly 12 is larger, the pressing pressure is smaller.
[0043] It should be noted that the Newton rings are generated by the thickness deviation around the liquid crystal box 2 and the thickness deviation in the middle. The greater the thickness deviation around the liquid crystal box 2 and the thickness deviation in the middle, the greater the number of Newton rings. In the liquid crystal box pressing device 1 provided in the embodiment of the present application, during the process of pressing the liquid crystal box 2, the operator can irradiate the detection light to the liquid crystal box 2 through the light-transmitting portion 15 and observe the Newton rings of the liquid crystal box 2. Further, the operator can adjust the pressing pressure (i.e., the distance between the pressing platform 13 and the airbag assembly 12) and the pressing time according to the number of Newton rings, which is conducive to controlling the thickness and uniformity of the liquid crystal box 2, thereby reducing the difficulty of controlling the uniformity of the liquid crystal box 2.
[0044] In one embodiment, referring to Figure 1As shown, the pressing platform 13 is provided with a mounting hole 131, and the mounting hole 131 penetrates the pressing platform 13 from the side of the pressing platform 13 close to the airbag assembly 12 to the side of the pressing platform 13 away from the airbag assembly 12. The light-transmitting portion 15 is embedded in the mounting hole 131. In this way, on the one hand, it can ensure that the pressing platform 13 can pressurize the liquid crystal box 2 to achieve the pressing function; on the other hand, it can ensure that the external detection light can be irradiated on the liquid crystal box 2, and it is convenient for the operator to observe the Newton ring.
[0045] In one embodiment, the surface of the light-transmitting portion 15 close to the airbag assembly 12 is flush with the surface of the pressing platform 13 close to the airbag assembly 12. That is, the surface of the light-transmitting portion 15 close to the airbag assembly 12 and the surface of the pressing platform 13 close to the airbag assembly 12 are located on the same plane. In this way, when the upper surface of the liquid crystal cell 2 contacts the light-transmitting portion 15 and the pressing platform 13, the force on the liquid crystal cell 2 is relatively uniform, thereby improving the uniformity of pressing.
[0046] In one embodiment, the adjustment mechanism 14 includes a guide rod 141 and an adjustment member 142, wherein one end of the guide rod 141 is connected to the base 11, and the other end extends toward the direction close to the pressing platform 13. The pressing platform 13 is provided with a guide hole 132, and the guide rod 141 is passed through the guide hole 132. The adjustment member 142 is provided on the guide rod 141 and is located on a side of the pressing platform 13 away from the base 11. The adjustment member 142 abuts against the pressing platform 13 and is used to adjust the distance between the pressing platform 13 and the airbag assembly 12.
[0047] In this way, on the one hand, the movement direction of the laminating platform 13 can be guided to prevent the laminating platform 13 from being displaced during the laminating process and improve the laminating uniformity; on the other hand, the structure of the adjustment mechanism 14 is relatively simple, reducing the difficulty of use and manufacturing cost of the liquid crystal box laminating device 1.
[0048] In one embodiment, referring to Figure 2 As shown, the adjusting member 142 is a telescopic mechanism, one end of which is in contact with the pressing platform 13, and the other end of which is connected to the adjusting member 142. By way of example, the telescopic mechanism may be a cylinder, an electric cylinder, or a hydraulic cylinder. Thus, when the telescopic mechanism is extended, the distance between the pressing platform 13 and the airbag assembly 12 becomes smaller, and the pressing pressure increases; when the telescopic mechanism is contracted, the distance between the pressing platform 13 and the airbag assembly 12 becomes larger, and the pressing pressure decreases.
[0049] It is understandable that the telescopic mechanism generally has a telescopic end 1421 and a fixed end 1422 , the telescopic end 1421 of the telescopic mechanism abuts against the pressing platform 13 , and the fixed end 1422 of the telescopic mechanism is connected to the adjusting member 142 .
[0050] In one embodiment, the adjusting member 142 is sleeved on the guide rod 141 and threadedly matched with the guide rod 141. In this way, the adjusting mechanism 14 is equivalent to a screw mechanism, so that the structure of the adjusting mechanism 14 can be relatively simple, and it is easy to manufacture and adjust.
[0051] In one embodiment, referring to Figure 3 As shown, the liquid crystal box pressing device 1 further includes a support structure 18, which is disposed between the airbag assembly 12 and the pressing platform 13, and the side of the support structure 18 away from the airbag assembly 12 is used to contact the liquid crystal box 2 to be pressed. By providing the support structure 18, the pressure of the airbag assembly 12 can be buffered, and the uniformity of the thickness of the liquid crystal box 2 can be improved.
[0052] In one embodiment, the support structure 18 includes a support member 181 and a spacer paper 182, one side surface of the support member 181 is used to contact the airbag assembly 12, and the spacer paper 182 is arranged on the side of the support member 181 away from the airbag assembly 12. The side surface of the spacer paper 182 away from the support member 181 is used to contact the liquid crystal box 2 to be pressed. In this way, the pressure of the airbag assembly 12 can be better buffered, and by setting the support structure 18, when the airbag assembly 12 is subjected to force, it first contacts the support assembly 18, and the pressure of the airbag assembly 12 is first averaged by the support assembly 18, and then contacts the liquid crystal box 2 through the support assembly 18, so that the pressure of the liquid crystal box 2 is more uniform, and the uniformity of the thickness of the liquid crystal box 2 is improved.
[0053] For example, the support member 181 may be a support glass, and the spacer paper 182 may be a Teflon spacer paper.
[0054] It should be noted that the support structure 18 may include a plurality of spacer papers 182 to ensure the flatness of the force-bearing surface, thereby further improving the uniformity of the cell thickness of the liquid crystal cell 2 .
[0055] In one embodiment, the liquid crystal box pressing device 1 further includes an air pressure regulating mechanism 1714, and the air pressure regulating mechanism 1714 is connected to the air bag assembly 12. Thus, by adjusting the air pressure of the air bag assembly 12, the pressing pressure can also be adjusted.
[0056] In one embodiment, the airbag assembly 12 includes an airbag and an air tube, and the air pressure regulating mechanism 1714 includes an air pump and an air tank. One end of the air tube is connected to the airbag, and the other end is connected to the air pump. The air pump is connected to the air tank, and the air pump can fill the air in the air tank into the airbag. It is understandable that a deflation valve can be provided on the air tube, and when the pressing pressure needs to be reduced, the air can be deflated through the deflation valve.
[0057] In one embodiment, referring to Figure 3As shown, the liquid crystal box pressing device 1 further includes a light source 16, which is used to emit detection light. Thus, during the pressing process, the detection light can be emitted by the light source 16 and illuminate the liquid crystal box 2.
[0058] In one embodiment, the light source 16 is a sodium lamp, which has a relatively low cost, thus helping to reduce the cost of the liquid crystal cell pressing device 1 .
[0059] In one embodiment, referring to Figure 4 As shown, there are multiple adjustment mechanisms 14, which are symmetrically arranged. Specifically, there are four adjustment mechanisms 14, which are distributed at four corners of the pressing platform 13, wherein the adjustment mechanisms 14 on both sides of the first center line a are symmetrically arranged, and the adjustment mechanisms 14 on both sides of the second center line b are symmetrically arranged.
[0060] In this way, the pressure on the pressing platform 13 can be made more uniform, which is beneficial to improving the uniformity of pressing.
[0061] The liquid crystal box pressing device 1 provided in the embodiment of the present application can press the liquid crystal box 2 using the following method:
[0062] Step 1: Use the liquid crystal box pressing device 1 to perform initial pressing on the liquid crystal box 2. After the initial pressing, the liquid crystal box 2 is allowed to stand and level for 2 minutes to 15 minutes.
[0063] Step 2: Use the light source 16 to illuminate the liquid crystal box 2, and observe the number and uniformity of the Newton rings. If the number and uniformity of the Newton rings meet the requirements, then further measure the thickness of the liquid crystal box 2. If the uniformity of the thickness of the liquid crystal box 2 meets the requirements, then perform UV curing and thermal curing on the liquid crystal box 2. It should be noted that the liquid crystal box 2 can be cured according to the Figure 5 The thickness of the liquid crystal cell 2 is measured by the distribution diagram of the thickness measurement points 21 shown.
[0064] Step 3: If the thickness of the liquid crystal box 2 is too large, it means that the pressure during pressing is too small, so press the liquid crystal box 2 again until the thickness uniformity and the number of Newton rings meet the requirements, and then UV cure and heat cure the liquid crystal box 2. If the thickness of the liquid crystal box 2 is too small, it means that the static leveling time is not enough and the liquid crystal box 2 does not rebound completely, so increase the static leveling time until the thickness uniformity meets the requirements, and then UV cure and heat cure the liquid crystal box 2.
[0065] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features of the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A liquid crystal box pressing device, characterized in that: include: Base; An airbag assembly is arranged on one side of the base; A pressing platform, arranged on a side of the airbag assembly away from the base; An accommodating space is formed between the laminating platform and the airbag assembly, and the accommodating space is used to accommodate the liquid crystal box to be laminarized; as well as An adjusting mechanism, disposed on the base and movably connected to the pressing platform, the adjusting mechanism being used to adjust the distance between the pressing platform and the airbag assembly; Wherein, a light-transmitting portion is provided on the pressing platform, and the light-transmitting portion is configured to allow detection light to pass through so that the detection light illuminates the liquid crystal box, and an operator can observe the Newton rings of the liquid crystal box with the help of the light-transmitting portion.
2. The liquid crystal box pressing device according to claim 1, characterized in that: The pressing platform is provided with a mounting hole, and the mounting hole penetrates the pressing platform from a side of the pressing platform close to the airbag assembly to a side of the pressing platform away from the airbag assembly; The light-transmitting portion is embedded in the mounting hole.
3. The liquid crystal box pressing device according to claim 1, characterized in that: The surface of the light-transmitting portion close to the airbag assembly is flush with the surface of the pressing platform close to the airbag assembly.
4. The liquid crystal box pressing device according to claim 1, characterized in that: The regulating mechanism comprises: A guide rod, one end of which is connected to the base, and the other end of which extends toward the direction close to the pressing platform; a guide hole is provided on the pressing platform, and the guide rod is inserted into the guide hole; and An adjusting member is arranged on the guide rod and is located on a side of the pressing platform away from the base; the adjusting member abuts against the pressing platform and is used to adjust the distance between the pressing platform and the airbag assembly.
5. The liquid crystal box pressing device according to claim 4, characterized in that: The adjusting member is a telescopic mechanism, one end of the telescopic mechanism is in contact with the pressing platform, and the other end of the telescopic mechanism is connected with the adjusting member.
6. The liquid crystal box pressing device according to claim 1, characterized in that: The liquid crystal box pressing device further comprises a supporting structure, wherein the supporting structure is arranged between the airbag assembly and the pressing platform, and a side of the supporting structure away from the airbag assembly is used for contacting with the liquid crystal box to be pressed.
7. The liquid crystal box pressing device according to claim 6, characterized in that: The support structure comprises: A support member, a side surface of which is used to contact the airbag assembly; The spacer paper is arranged on a side of the support member away from the airbag assembly; a surface of the spacer paper on a side away from the support member is used to contact the liquid crystal box to be pressed.
8. The liquid crystal box pressing device according to any one of claims 1 to 7, characterized in that: There are multiple adjustment mechanisms, and the multiple adjustment mechanisms are symmetrically arranged.
9. The liquid crystal box pressing device according to any one of claims 1 to 7, characterized in that: The liquid crystal box pressing device also includes a light source component, and the light source component is used to emit detection light.
10. The liquid crystal box pressing device according to any one of claims 1 to 7, characterized in that: The liquid crystal box pressing device also includes an air pressure regulating mechanism, and the air pressure regulating mechanism is connected to the airbag assembly.