Photoresist die casting polaroid forming die

Abstract

The utility model discloses a photoresist die casting polaroid forming die. The photoresist die casting polaroid forming die comprises a lower die and an upper die, guide rods are fixedly arranged at the four corners of the lower die correspondingly. First springs and baffle rings are connected to the guide rods in a sleeving mode. Mounting grooves are formed in the two ends of the lower mold respectively, elastic pieces are arranged in the mounting grooves, second springs are arranged on the lower portions of the elastic pieces, and third springs are arranged at the two ends of the elastic pieces; the first spring and the baffle ring are arranged on the guide rod, and the upper mold is opened in an auxiliary mode through the first spring and the baffle ring; and the mounting groove is formed in the lower mold, the elastic piece is arranged in the mounting groove, and the elastic piece is supported through the second spring and the third spring, so that when the upper mold and the lower mold are subjected to negative pressure adsorption, auxiliary opening of the upper mold can be achieved, the first spring and the baffle ring are matched, and the situation that the polarizer is damaged due to the fact that the upper mold is forcibly opened is prevented.

Description

A photoresist molding die for polarizing films Technical Field

[0001] This utility model relates to a mold for forming polarizers, and more specifically, to a photoresist-molded polarizer mold. Background Technology

[0002] In modern integrated circuit manufacturing, photolithography generally refers to the process of transferring a drawn structural pattern from a mask to a substrate in micro- and nano-fabrication processes. It involves using exposure technology to copy the pattern of a semiconductor device or circuit from a mask onto a photoresist film on a semiconductor wafer, then dissolving and removing the photoresist film in the corresponding areas through a development process, and finally using the masking effect of the photoresist to process the exposed parts of the substrate while leaving the unexposed areas unaffected, thus achieving the purpose of pattern transfer.

[0003] A polarizer is an optical film material used to control the polarization direction of a specific light beam. The principle is that when natural light passes through a polarizer, light whose vibration direction is perpendicular to the polarizer's transmission axis is absorbed, leaving only polarized light whose vibration direction is parallel to the polarizer's transmission axis to pass through, thus achieving control over the polarization direction of the light beam.

[0004] However, when preparing existing polarizers, the molds are not easy to open, and the upper and lower molds are prone to adsorption and adhesion due to negative pressure. Forcibly opening them can easily damage the polarizers. Summary of the Invention

[0005] One objective of this invention is to provide a new technical solution for photoresist molding polarizer forming molds.

[0006] According to a first aspect of the present invention, a photoresist molding polarizer forming mold is provided, comprising a lower mold and an upper mold;

[0007] Guide rods are fixed at the four corners of the lower mold, and a first spring and a retaining ring are sleeved on the guide rods;

[0008] The lower mold has mounting grooves at both ends, and an elastic sheet is provided inside the mounting groove. A second spring is provided at the lower part of the elastic sheet, and a third spring is provided at both ends of the elastic sheet.

[0009] Optionally, a first guide groove is provided at each of the four corners of the upper mold, and a second guide groove is provided at the upper end of the first guide groove. The inner wall diameter of the second guide groove is smaller than the inner wall diameter of the first guide groove.

[0010] Optionally, the diameter of the guide rod is larger than the diameter of the retaining ring, the guide rod is located inside the second guide groove, and the retaining ring and the first spring are located inside the first guide groove.

[0011] Optionally, the bottom end of the first spring is fixed to the upper surface of the lower mold, and the upper end of the first spring is fixedly connected to the lower surface of the retaining ring.

[0012] Optionally, the upper mold has fitting grooves at both ends, and the upper end of the elastic sheet is fitted inside the fitting groove.

[0013] Optionally, movable blocks are fixedly provided at both ends of the elastic sheet, the movable blocks are movably located inside the mounting groove, and the two third springs are fixedly connected to the outside of the movable blocks, with both ends of the third springs fixedly connected to the inside of the mounting groove.

[0014] Optionally, an arc-shaped mold seat is fixedly provided on the middle upper surface of the lower mold, and an arc-shaped mold groove is provided on the middle lower surface of the upper mold. The lower mold and the upper mold fit together, and the arc-shaped mold seat is engaged in the arc-shaped mold groove.

[0015] The beneficial effects of this utility model are:

[0016] This utility model enables precise guiding and docking of the upper and lower molds when they are fitted together by setting a first spring and a retaining ring on the guide rod. In order to prevent the upper and lower molds from being difficult to open due to negative pressure during injection molding, the first spring and retaining ring assist in opening the upper mold.

[0017] The lower mold has an installation groove inside, and the installation groove has an elastic sheet inside. The elastic sheet is supported by a second spring and a third spring, so that the upper mold can be opened under negative pressure adsorption. In conjunction with the first spring and the retaining ring, it prevents the upper mold from being opened forcefully and causing damage to the polarizer.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of a photoresist molding polarizer forming mold in one embodiment;

[0021] Figure 2 is a schematic diagram of the lower mold structure of a photoresist molding polarizer forming mold in one embodiment;

[0022] Figure 3 is a schematic cross-sectional view of the lower mold of a photoresist molding polarizer forming mold in one embodiment;

[0023] Figure 4 is a bottom view of the upper mold of a photoresist molding polarizer forming mold in one embodiment;

[0024] Figure 5 is a top view of the upper mold of a photoresist molding polarizer forming mold in one embodiment;

[0025] Figure 6 is a cross-sectional schematic diagram of the upper mold of a photoresist molding polarizer forming mold in one embodiment.

[0026] The diagram shows the following: 1. Lower mold; 2. Upper mold; 3. Guide rod; 4. First spring; 5. Retaining ring; 6. Mounting groove; 7. Elastic sheet; 8. Moving block; 9. Second spring; 10. Third spring; 11. Arc-shaped mold base; 12. Arc-shaped mold groove; 13. Fitting groove; 14. First guide groove; 15. Second guide groove; 16. Injection channel; 17. Injection pipe. Detailed Implementation

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0030] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0031] As shown in Figures 1-6, a photoresist molding die for polarizing film includes a lower die 1 and an upper die 2.

[0032] Guide rods 3 are fixed at the four corners of the lower mold 1, and a first spring 4 and a retaining ring 5 are sleeved on the guide rods 3;

[0033] The lower mold 1 has mounting grooves 6 at both ends. The mounting grooves 6 have elastic plates 7 inside. The lower part of the elastic plate 7 has a second spring 9. The two ends of the elastic plate 7 have a third spring 10.

[0034] In this embodiment, preferably, a first guide groove 14 is provided at each of the four corners of the upper mold 2, and a second guide groove 15 is provided at the upper end of the first guide groove 14. The inner wall diameter of the second guide groove 15 is smaller than the inner wall diameter of the first guide groove 14.

[0035] It should be noted that the design of the first guide groove 14 and the second guide groove 15 facilitates the precise positioning of the guide rod 3, and the diameter of the second guide groove 15 is larger than the diameter of the first guide groove 14, which facilitates the insertion of the guide rod 3 and the retaining ring 5.

[0036] In this embodiment, preferably, the diameter of the guide rod 3 is larger than the diameter of the retaining ring 5, the guide rod 3 is located inside the second guide groove 15, and the retaining ring 5 and the first spring 4 are located inside the first guide groove 14;

[0037] It should be noted that the diameter of the guide rod 3 is larger than the diameter of the retaining ring 5, which facilitates the matching of the second guide groove 15 and the first guide groove 14. This allows the first spring 4 and the retaining ring 5 to contract under force when they collide with the junction of the first guide groove 14 and the second guide groove 15, thus providing elasticity.

[0038] In this embodiment, preferably, the bottom end of the first spring 4 is fixed to the upper surface of the lower mold 1, and the upper end of the first spring 4 is fixedly connected to the lower surface of the retaining ring 5.

[0039] It should be noted that the first spring 4 is fixed on the lower mold 1, which facilitates the fixed connection and can maintain the stability of the retaining ring 5 to prevent it from falling off.

[0040] In this embodiment, preferably, the upper mold 2 has fitting grooves 13 at both ends, and the upper end of the elastic sheet 7 is fitted inside the fitting groove 13.

[0041] It should be noted that the design of the fitting groove 13 facilitates the fitting of the upper end of the elastic sheet 7, thereby enabling the upper mold 2 to be elastically lifted.

[0042] In this embodiment, preferably, movable blocks 8 are fixedly provided at both ends of the elastic sheet 7, the movable blocks 8 are movably located inside the mounting groove 6, and two third springs 10 are fixedly connected to the outside of the movable blocks 8, with both ends of the third springs 10 being fixedly connected to the inside of the mounting groove 6.

[0043] It should be noted that the movable block 8 is located inside the mounting groove 6, which can maintain the stable connection of the elastic sheet 7. Furthermore, the third spring 10 and the second spring 9 provide elasticity to the elastic sheet 7, facilitating the auxiliary opening and closing of the upper mold 2.

[0044] In this embodiment, preferably, an arc-shaped mold seat 11 is fixedly provided on the middle upper surface of the lower mold 1, and an arc-shaped mold groove 12 is provided on the middle lower surface of the upper mold 2. The lower mold 1 and the upper mold 2 fit together, and the arc-shaped mold seat 11 is engaged in the arc-shaped mold groove 12.

[0045] It should be noted that the arc-shaped mold groove 12 and the arc-shaped mold base 11 fit together to facilitate the injection molding of polarizing film, and the snap-fit ​​connection can prevent the injection liquid from leaking out; and an injection channel 16 is provided at one end of the arc-shaped mold groove 12, and an injection pipe 17 connected to the injection channel 16 is provided at the upper end of the upper mold 2 to facilitate the input of injection liquid.

[0046] The specific operational procedures for this application are as follows:

[0047] In use, first apply release liquid to the surface of the arc mold seat 11 on the lower mold 1 and the arc mold groove 12 on the upper mold 2. Then guide the upper mold 2 and the lower mold 1 through the guide rod 3, the first guide groove 14 and the second guide groove 15 to control the upper mold 2 and the lower mold 1 to fit together. When the upper mold 2 and the lower mold 1 fit together, the first spring 4 and the elastic sheet 7 are squeezed. Then, the solution is injected into the arc mold seat 11 and the arc mold groove 12 through the injection pipe 17 and the injection channel 16, and cooled to form a polarizer.

[0048] When it is necessary to open the lower mold 1 and the upper mold 2, the first spring 4 and the retaining ring 5, as well as the elastic sheet 7, the second spring 9 and the third spring 10, assist in lifting the upper mold 2, which can eliminate the negative pressure between the upper mold 2 and the lower mold 1 and prevent the polarizer from being damaged when the upper mold 2 is lifted.

[0049] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A photoresist molding die for polarizing films, characterized in that: It includes a lower mold and an upper mold; guide rods are fixed at the four corners of the lower mold, and a first spring and a retaining ring are sleeved on the guide rods; mounting grooves are opened at both ends of the lower mold, and elastic plates are provided inside the mounting grooves. A second spring is provided at the lower part of the elastic plate, and a third spring is provided at both ends of the elastic plate.

2. The photoresist molding die for polarizing film according to claim 1, characterized in that: The upper mold has a first guide groove at each of its four corners, and a second guide groove at the upper end of the first guide groove. The inner diameter of the second guide groove is smaller than the inner diameter of the first guide groove.

3. The photoresist molding die for polarizing film according to claim 2, characterized in that: The diameter of the guide rod is larger than the diameter of the retaining ring. The guide rod is located inside the second guide groove, and the retaining ring and the first spring are located inside the first guide groove.

4. The photoresist molding die for polarizing film according to claim 3, characterized in that: The bottom end of the first spring is fixed to the upper surface of the lower mold, and the upper end of the first spring is fixedly connected to the lower surface of the retaining ring.

5. The photoresist molding die for polarizing film according to claim 1, characterized in that: The upper mold has fitting grooves at both ends, and the upper end of the elastic sheet is fitted inside the fitting groove.

6. The photoresist molding die for polarizing film according to claim 1, characterized in that: The elastic sheet has movable blocks fixedly installed at both ends, and the movable blocks are movably located inside the mounting groove. The two third springs are fixedly connected to the outside of the movable blocks, and the two ends of the third springs are fixedly connected to the inside of the mounting groove.

7. The photoresist molding die for polarizing film according to claim 1, characterized in that: An arc-shaped mold seat is fixedly provided on the middle upper surface of the lower mold, and an arc-shaped mold groove is provided on the middle lower surface of the upper mold. The lower mold and the upper mold fit together, and the arc-shaped mold seat is engaged in the arc-shaped mold groove.

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