US-12623417-B2 - Fixation fixture, processing device and method for making liquid crystal lens

US12623417B2US 12623417 B2US12623417 B2US 12623417B2US-12623417-B2

Abstract

A fixation fixture includes a lower fixture, a middle fixture, and an upper fixture. The lower fixture includes a loading stage for carrying an object. The middle fixture is removably installed on the lower fixture and defines a through hole to expose the loading stage. A retaining edge extends from wall of the through hole. The upper fixture is removably installed on the middle fixture and extends in the through hole. A processing device and a method for making a liquid crystal lens are also provided.

Inventors

Chien-Cheng Chen
Po-Lun Chen
YUN-PEI CHEN

Assignees

INTERFACE TECHNOLOGY (CHENGDU) CO., LTD.
INTERFACE OPTOELECTRONICS (SHENZHEN) CO., LTD.
GENERAL INTERFACE SOLUTION LIMITED

Dates

Publication Date: 20260512
Application Date: 20230822
Priority Date: 20230721

Claims (17)

1 . A fixation fixture comprising: a lower fixture, the lower fixture comprising a loading stage configured for carrying a first object; a middle fixture, the middle fixture removably installed on the lower fixture, the middle fixture comprising a through hole to expose the loading stage, and a retaining edge extending inwardly from a wall of the through hole, wherein the retaining edge has a height along a thickness direction of the middle fixture, a first side of the retaining edge facing the lower fixture is configured for resisting against the first object placed on the loading stage, and a second side away from the lower fixture is configured for supporting a second object, thereby maintaining a predetermined distance between the first object and the second object by the height of the retaining edge; and an upper fixture, the upper fixture removably installed on the middle fixture and extending in the through hole.
2 . The fixation fixture of claim 1 , further comprising two fixing blocks protruding from a surface of the lower fixture having the loading stage, wherein the two fixing blocks are arranged on opposite sides of the loading stage.
3 . The fixation fixture of claim 1 , wherein the middle fixture comprises a first part and a second part spaced apart from each other, the first part and the second part cooperate with each other to define the through hole, the retaining edge is formed on both the first part and the second part.
4 . The fixation fixture of claim 1 , wherein a positioning block protrudes from a surface of the lower fixture having the loading stage and surrounds the loading stage, a limited groove is formed on a surface of the middle fixture facing the lower fixture, and the positioning block is matched with the limited groove to limit a position of the middle fixture on the lower fixture.
5 . The fixation fixture of claim 1 , wherein a positioning protrusion protrudes from a surface of the middle fixture facing away from the lower fixture, the upper fixture comprises a clamping groove on a surface of the upper fixture facing the middle fixture, and the clamping groove is matched with the positioning protrusion to confine the positioning protrusion to within the clamping groove.
6 . The fixation fixture of claim 1 , wherein a pressing part is formed on a surface of the upper fixture facing the middle fixture, the pressing part is configured to extend into the through hole.
7 . The fixation fixture of claim 1 , wherein each of the middle fixture and the upper fixture comprises a handle.
8 . The fixation fixture of claim 1 , wherein the lower fixture comprises at least one pick-up slot on a surface of the lower fixture having the loading stage, the pick-up slot is located next to the loading stage.
9 . A processing device comprising: a frame comprising an accommodating space; a fixation fixture in the accommodating space, the fixation fixture comprising: a lower fixture, the lower fixture comprising a loading stage configured for carrying a first object; a middle fixture, the middle fixture removably installed on the lower fixture, the middle fixture defining a through hole to expose the loading stage, and a retaining edge extending inwardly from a wall of the through hole, wherein the retaining edge has a height along a thickness direction of the middle fixture, a first side of the retaining edge facing the lower fixture is configured for resisting against the first object placed on the loading stage, and a second side away from the lower fixture is configured for supporting a second object, thereby maintaining a predetermined distance between the first object and the second object by the height of the retaining edge; and an upper fixture, the upper fixture removably installed on the middle fixture and extending in the through hole; and a heater under the fixation fixture.
10 . The processing device of claim 9 , further comprising two fixing blocks protruding from a surface of the lower fixture having the loading stage, wherein the two fixing blocks are arranged on opposite sides of the loading stage.
11 . The processing device of claim 9 , wherein the middle fixture comprises a first part and a second part spaced apart from each other, the first part and the second part cooperate with each other to define the through hole, the retaining edge is formed on both the first part and the second part.
12 . The processing device of claim 9 , wherein a positioning block protrudes from a surface of the lower fixture having the loading stage and is around the loading stage, a limited groove is formed on a surface of the middle fixture facing the lower fixture, and the positioning block is matched with the limited groove to limit a position of the middle fixture on the lower fixture.
13 . The processing device of claim 9 , wherein a positioning protrusion protrudes from a surface of the middle fixture facing away from the lower fixture, the upper fixture comprises a clamping groove on a surface of the upper fixture facing the middle fixture, and the clamping groove is matched with the positioning protrusion to confine the positioning protrusion to within the clamping groove.
14 . The processing device of claim 9 , wherein a pressing part is formed on a surface of the upper fixture facing the middle fixture, the pressing part is configured to extend into the through hole.
15 . The processing device of claim 9 , wherein each of the middle fixture and the upper fixture comprises a handle.
16 . The processing device of claim 9 , wherein the lower fixture comprises at least one pick-up slot on a surface of the lower fixture having the loading stage, the pick-up slot is located adjacent to the loading stage.
17 . A fixation fixture comprising: a lower fixture, the lower fixture comprising a loading stage configured for carrying an object; a middle fixture, the middle fixture removably installed on the lower fixture, the middle fixture comprising a through hole to expose the loading stage, and a retaining edge extending inwardly from a wall of the through hole; and an upper fixture, the upper fixture removably installed on the middle fixture and extending in the through hole; wherein a positioning block protrudes from a surface of the lower fixture having the loading stage and surrounds the loading stage, a limited groove is formed on a surface of the middle fixture facing the lower fixture, and the positioning block is matched with the limited groove to limit a position of the middle fixture on the lower fixture; and a positioning protrusion protrudes from a surface of the middle fixture facing away from the lower fixture, the upper fixture comprises a clamping groove on a surface of the upper fixture facing the middle fixture, and the clamping groove is matched with the positioning protrusion to confine the positioning protrusion to within the clamping groove.

Description

FIELD The subject matter herein generally relates to a field of liquid crystal lens, particularly relates to a fixation fixture used in a method for making a liquid crystal lens, a processing device having the fixation fixture, and the method for making the liquid crystal lens. BACKGROUND With the development of virtual reality (VR) devices, consumers have higher requirements for lightness, imaging quality, and wearing experience of VR. Pancake technology utilizes optical path folding and has characteristics such as relatively small field of view, lightweight, and portability. Pancake technology combined with passive liquid crystal lenses can solve the Vergence accommodation conflict (VAC) of vision. However, during the manufacturing processes of liquid crystal lenses have the several challenges, such as a conventional heating equipment may not effectively fix the liquid crystal and solid-state lens, resulting in the inability of the liquid crystal to be neatly arranged in specific positions and uneven thickness of the liquid crystal. A conventional heating equipment may not fix concave and convex lenses. Therefore, there is room for improvement in the art. BRIEF DESCRIPTION OF THE DRAWINGS Implementations of the present technology will now be described, by way of embodiments only, with reference to the attached figures. FIG. 1 is an isometric view of a fixation fixture according to a first embodiment of the present disclosure. FIG. 2 is an isometric view of a part of the fixation fixture of FIG. 1. FIG. 3 is an exploded view of the fixation fixture of FIG. 1. FIG. 4 is an exploded view of the fixation fixture of FIG. 1 along another angle. FIG. 5 is an exploded view of a fixation fixture according to a second embodiment of the present disclosure. FIG. 6 is a cross-sectional view of the fixation fixture of FIG. 1. FIG. 7 is a plan view of a processing device. FIG. 8 is a flow chart showing a making process of a liquid crystal lens. FIG. 9 is a flow chart of a method for making a liquid crystal lens. DETAILED DESCRIPTION It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein may be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. The term “coupled” is defined as coupled, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently coupled or releasably coupled. The term “comprising” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. A liquid crystal lens used in the VR field, includes a transparent first curved substrate, a transparent second curved substrate, and a solid-state liquid crystal layer between the first curved substrate and the second curved substrate. The present disclosure provides a method for making the liquid crystal lens. The method uses a transparent first curved substrate, a transparent second curved substrate, and liquid crystal as raw materials. During the making process, a fixation fixture is used, which enables the raw materials to be well fixed during the making process of the liquid crystal lens, thereby obtaining a liquid crystal lens with good performance and stable quality. As shown in FIG. 1 and FIG. 2, a fixation fixture 100 of a first embodiment includes a lower fixture 10, a middle fixture 20, and an upper fixture 30. The middle fixture 20 is between the lower fixture 10 and the upper fixture 30. The lower fixture 10 carries the middle fixture 20 and the upper fixture 30. As shown in FIG. 8, in the present embodiment, the first curved substrate 60 has two opposite surfaces that are a convex curved surface 61 and a plane 63. That is, the first curved substrate 60 is a flat convex substrate. The second curved substrate 70 has two opposite surfaces that are convex in a same direction. That is, the second curved substrate 70 is a convex substrate. The shapes of the first substrate and the second substrate can also be designed according to required products. The lower fixture 10 is used to carry an object (the first curved substr