A crystal filling structure for improving poor crystal filling
By introducing a fiber layer and a stepped flow guide wall structure into the crystal filling assembly, dirt in the liquid crystal is filtered and the flow rate is controlled, which solves the problem of poor liquid crystal display caused by the contamination of the sponge strip, and improves the crystal filling efficiency and product yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONHUI HUIZHOU SEMICON
- Filing Date
- 2025-05-30
- Publication Date
- 2026-07-14
AI Technical Summary
During the crystal filling process, it is difficult to completely remove dirt from the sponge strip, which leads to poor display of the LCD module. In addition, frequent replacement of the sponge strip increases material loss and cleaning cycle, affecting the crystal filling efficiency.
The crystal filling assembly includes a crystal filling strip, a first fiber layer, a sponge strip, and a second fiber layer. The flow guide wall has a stepped structure, and the design includes a flow divider and a flow slowing component to filter small particulate contaminants in the liquid crystal, control the liquid crystal flow rate, and avoid impacting the internal structure of the crystal filling area.
It improved the quality of the liquid crystal, reduced sponge contamination, increased the product yield, reduced the equipment yield, reduced equipment wear and tear, simplified production efficiency, and reduced the frequency of cleaning and replacing sponge strips.
Smart Images
Figure CN224501105U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board processing, and specifically to a crystal filling structure that improves poor crystal filling. Background Technology
[0002] LCM stands for Liquid Crystal Display Module, also known as a liquid crystal display module or LCD screen. It uses liquid crystal material as its basic component, filling the space between two parallel plates. By applying voltage, the arrangement of molecules within the liquid crystal material is changed to achieve light blocking and transmission, displaying images of varying depths and textures. Furthermore, by adding a three-color filter layer between the two plates, color images can be displayed. A typical LCD module includes the LCD (liquid crystal display screen), driver circuitry, ICs, and FPC (flexible printed circuit board). LCMs are widely used in consumer electronics, automotive displays, and medical products. The manufacturing process of an LCD involves a liquid crystal injection step, specifically injecting liquid crystal with twisting properties into a cell with an alignment layer. When electricity is applied, the liquid crystal flips, displaying different patterns and segments. Currently, in the crystal filling process, liquid crystal is typically dripped onto a cleaned sponge strip. The liquid crystal-saturated sponge strip and an empty LCD cell are then placed in a crystal filling furnace. Finally, a vacuum pump inside the furnace removes air from the empty cell, and the liquid crystal is filled into the cell using pressure difference and capillary action. In this process, the cleanliness of the injection environment and the cleanliness of the crystal filling fixture are crucial factors. Because the sponge strip itself has a loose, porous structure, it is difficult to completely eliminate dirt remaining in the pores. During crystal filling, as the vacuum is applied, this dirt gradually rises to the surface and is eventually injected into the cell along with the liquid crystal, leading to poor product display. To ensure that the product is free of black and white spots, uneven sealing and rinsing, and abnormal high current after liquid crystal filling, the cleanliness of the sponge must be maintained during production. This necessitates frequent replacement and cleaning of the sponge strip. The cleaning process requires multiple soakings in acetone, followed by drying in an oven, increasing material loss, lengthening the cleaning cycle, and significantly impacting crystal filling efficiency. Utility Model Content
[0003] To address the aforementioned problems, this invention provides a crystal-filling structure that improves poor crystal filling.
[0004] This utility model is achieved using the following solution:
[0005] A crystal filling structure for improving poor crystal filling includes a crystal filling assembly and a liquid crystal cell that cooperates with the crystal filling assembly; the crystal filling assembly includes a crystal filling strip, a first fiber layer, a sponge strip, and a second fiber layer arranged sequentially from bottom to top; the liquid crystal cell includes a substrate and a frame disposed on the substrate, the frame forming a crystal filling area on the substrate, two flow guide walls symmetrically arranged on the side of the frame near the crystal filling assembly, the two flow guide walls forming a crystal filling port, a flow divider is disposed near the crystal filling port in the crystal filling area, the flow divider and the two flow guide walls respectively forming a first crystal filling channel and a second crystal filling channel; the flow guide walls have a stepped structure, so that the crystal filling port gradually increases from the outside to the inside.
[0006] Furthermore, the flow divider has a trapezoidal cross-section and is provided with flow divider holes.
[0007] Furthermore, the crystal filling area is also provided with a first flow-retarding component that cooperates with the first crystal filling channel, and a second flow-retarding component that cooperates with the second crystal filling channel; both the first flow-retarding component and the second flow-retarding component include a plurality of flow-retarding elements, which are arranged in a triangular array.
[0008] Furthermore, the cross-sectional shape of the flow-retarding element is teardrop-shaped.
[0009] Furthermore, the cross-sectional shape of the flow-retarding element is quadrilateral, and the angles of two opposite corners of the quadrilateral are equal, while the angles of the other two opposite corners are unequal.
[0010] Furthermore, multiple diverter components are arranged in a row, and adjacent diverter components have equal intervals.
[0011] Furthermore, the flow guide wall includes a first flow guide wall, a second flow guide wall inclined relative to the first flow guide wall, a third flow guide wall inclined relative to the second flow guide wall, and a fourth flow guide wall inclined relative to the third flow guide wall. The first flow guide wall is perpendicular to the frame of the adhesive frame, and the fourth flow guide wall is connected to the frame of the adhesive frame.
[0012] Furthermore, the included angle between the first guide wall and the second guide wall is 100° to 160°, the included angle between the second guide wall and the third guide wall is 145° to 160°, and the included angle between the third guide wall and the fourth guide wall is 110° to 170°.
[0013] Furthermore, the crystal-filling strip has a groove, and the first fiber layer, the sponge strip, and the second fiber layer are located within the groove.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The crystal filling assembly of this invention features a first fiber layer and a second fiber layer on both sides of the sponge strip. These layers filter small particles and impurities within the liquid crystal, improving the quality of the liquid crystal injected into the cell and preventing defects caused by contaminants. This effectively avoids secondary contamination introduced during cleaning, increases the yield rate, reduces the frequency of sponge strip cleaning and replacement, and improves the efficiency of the crystal filling process. Simultaneously, the flow guide wall at the crystal filling port of the liquid crystal cell has a stepped structure. With the assistance of a flow divider, this reduces the flow rate of the liquid crystal, preventing it from directly impacting the inside of the crystal filling area and avoiding the disintegration of structures such as plastic balls within the crystal filling area, thereby further ensuring the product yield rate. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a crystal-filling structure for improving poor crystal filling, provided in Embodiment 1 of this utility model.
[0017] Figure 2 This is a schematic diagram of the liquid crystal cell in Embodiment 1 of this utility model.
[0018] Figure 3 This is a schematic diagram of the liquid crystal cell in Embodiment 2 of this utility model.
[0019] Figure 4 This is a schematic diagram of the liquid crystal cell in Embodiment 3 of this utility model.
[0020] Figure 5 This is a schematic diagram of another state of the crystal filling component of this utility model.
[0021] The image includes:
[0022] Crystal filling assembly 1, crystal filling strip 11, first fiber layer 12, sponge strip 13, second fiber layer 14, groove 15, liquid crystal cell 2, substrate 21, frame 22, flow guide wall 23, first flow guide wall 231, second flow guide wall 232, third flow guide wall 233, fourth flow guide wall 234, crystal filling port 24, flow divider 25, flow divider hole 26, first slow flow assembly 27, slow flow assembly 271, second slow flow assembly 28. Detailed Implementation
[0023] To facilitate understanding of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0024] Example 1
[0025] Refer to 1 to Figure 2 This utility model provides a crystal filling structure to improve poor crystal filling, including a crystal filling component 1 and a liquid crystal cell 2 that cooperates with the crystal filling component 1. It should be noted that the accompanying drawings do not represent actual dimensions, but are only used to clearly illustrate the structural relationships.
[0026] The crystal filling assembly 1 includes, from bottom to top, a crystal filling strip 11, a first fiber layer 12, a sponge strip 13, and a second fiber layer 14. The crystal filling strip 11 is a supporting structure used to support the first fiber layer 12, the sponge strip 13, and the second fiber layer 14. The first fiber layer 12 and the second fiber layer 14 are used to filter the liquid crystal, filtering out small particulate impurities in the liquid crystal and improving the quality of the liquid crystal injected into the cell.
[0027] Both the first fiber layer 12 and the second fiber layer 14 are made of glass fiber. Before use, the glass fiber is cut to a set size, such as 250mm*5mm*1.5mm, in a cleanroom according to processing requirements. There are no large voids or dirt residue inside the glass fiber, and particulate impurities cannot penetrate into the glass fiber during subsequent use. During crystal pouring, particulate impurities flow from the upper glass fiber to the sponge strip 13 along the edge of the crystal pouring strip 11. Due to the presence of the lower glass fiber, the impurities are locked in the sponge strip 13 and cannot pass through the lower glass fiber, avoiding defects caused by dirt or inadequate cleaning of the sponge strip 13 itself. This effectively avoids secondary pollution introduced during cleaning, improves the yield rate, and also reduces the frequency of cleaning and replacement of the sponge strip 13, improving the efficiency of the crystal pouring operation.
[0028] The liquid crystal cell 2 includes a substrate 21 and a frame 22 disposed on the substrate 21. The frame 22 forms a crystal filling area on the substrate 21. Two flow guide walls 23 are symmetrically arranged on the side of the frame 22 near the crystal filling assembly 1, and a crystal filling port 24 is formed between the two flow guide walls 23. A flow divider 25 is disposed near the crystal filling port 24 in the crystal filling area. The flow divider 25 and the two flow guide walls 23 respectively form a first crystal filling channel and a second crystal filling channel. The flow guide walls 23 have a stepped structure, which makes the crystal filling port 24 gradually increase in size from the outside to the inside, forming a structure similar to a trumpet mouth, so that the liquid crystal channel gradually increases. After the liquid crystal enters from the crystal filling port 24, the flow rate can be slowed down to a certain extent.
[0029] The crystal-filling strip 11 has a groove 15, within which the first fiber layer 12, the sponge strip 13, and the second fiber layer 14 are located, with the top of the second fiber layer 14 protruding from the groove 15. In a specific implementation, a small hole can also be provided on the bottom side of the crystal-filling strip 11. Due to the presence of the first fiber layer 12, impurities are locked within the sponge strip 13 and cannot pass through the first fiber layer 12. Thus, the filtered liquid crystal can flow back to the second fiber layer 14 through the small hole on the bottom side, achieving the purpose of liquid crystal recycling and reducing crystal-filling loss. Alternatively, the first fiber layer 12, the sponge strip 13, and the second fiber layer 14 may not be located within the groove 15 (e.g., Figure 5 (As shown).
[0030] The flow divider 25 has a trapezoidal cross-section and is provided with a flow divider hole 26. During the crystal filling process, after the liquid crystal purified by the crystal filling assembly 1 flows to the flow divider 25, under the action of the flow divider 25, a portion of the liquid crystal flows to the first crystal filling channel and the second crystal filling channel respectively, while a portion of the liquid crystal continues to flow through the flow divider hole 26. The liquid crystal does not directly impact the interior of the crystal filling area, thus avoiding the disintegration of structures such as plastic balls in the crystal filling area and preventing damage to the surface of the PI (Polyimide) alignment layer, thereby reducing the phenomenon of poor crystal filling.
[0031] The crystal filling area is also provided with a first flow-retarding component 27 that cooperates with the first crystal filling channel, and a second flow-retarding component 28 that cooperates with the second crystal filling channel; the first flow-retarding component 27 and the second flow-retarding component 28 each include a plurality of flow-retarding elements 271, which are arranged in a triangular array.
[0032] In this embodiment, the cross-sectional shape of the flow retarder 271 is teardrop-shaped, with its tip facing the crystal filling port 24. After the liquid crystal flows out of the first crystal filling channel / second crystal filling channel, it is split along the two inclined surfaces. After the liquid crystal flows to the end of the inclined surface, a portion of the liquid crystal will flow to the arc-shaped surface at the end, thereby reducing the flow rate of the liquid crystal again and preventing it from scouring the inside of the crystal filling area.
[0033] The flow guide wall 23 includes a first flow guide wall 231, a second flow guide wall 232 inclined relative to the first flow guide wall 231, a third flow guide wall 233 inclined relative to the second flow guide wall 232, and a fourth flow guide wall 234 inclined relative to the third flow guide wall 233. The first flow guide wall 231 is perpendicular to the frame of the adhesive frame 22, and the fourth flow guide wall 234 is connected to the frame of the adhesive frame 22.
[0034] The included angle α between the first guide wall 231 and the second guide wall 232 is 100° to 160°, and in this embodiment, the included angle α is 124°. The included angle β between the second guide wall 232 and the third guide wall 233 is 145° to 160°, and in this embodiment, the included angle β is 146°. The included angle γ between the third guide wall 233 and the fourth guide wall 234 is 110° to 170°, and in this embodiment, the included angle γ is 127°.
[0035] Example 2
[0036] Reference Figure 3In this embodiment, the flow-retarding element 271 has a quadrilateral cross-section, with two opposite angles having equal angles and the other two opposite angles having unequal angles. Specifically, in this embodiment, the flow-retarding element 271 is formed by connecting the bases of two isosceles triangles of unequal heights. The inclined surface facing the crystal filling port 24 is longer. After the liquid crystal flows out of the first crystal filling channel / second crystal filling channel, it is split along the two inclined surfaces. After the liquid crystal reaches the end of the inclined surface, a portion of the liquid crystal continues to flow along the two shorter inclined surfaces below, thereby reducing the flow rate of the liquid crystal again and preventing scouring of the inside of the crystal filling area. The remaining parts of the structure in this embodiment are the same as in Embodiment 1, and will not be described again here.
[0037] Example 3
[0038] Reference Figure 4 In this embodiment, multiple flow dividers 25 are arranged in a row, with equal intervals between adjacent flow dividers 25. After the liquid crystal purified by the crystal filling assembly 1 flows to the flow dividers 25, under the action of the flow dividers 25, a portion of the liquid crystal flows to the first crystal filling channel and the second crystal filling channel respectively, while a portion of the liquid crystal continues to flow through the intervals between adjacent flow dividers 25. The liquid crystal does not directly impact the interior of the crystal filling area, avoiding the disintegration of structures such as plastic balls in the crystal filling area and preventing damage to the surface of the PI orientation layer, thereby reducing the phenomenon of poor crystal filling. The remaining parts of the structure in this embodiment are the same as those in Embodiment 1 or Embodiment 2, and will not be described again here.
[0039] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. For example, "upper," "lower," "left," "right," etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0040] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0042] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the scope of the appended claims.
Claims
1. A crystal-filling structure for improving poor crystal filling, characterized in that, The device includes a crystal filling assembly and a liquid crystal cell that cooperates with the crystal filling assembly. The crystal filling assembly includes a crystal filling strip, a first fiber layer, a sponge strip, and a second fiber layer arranged sequentially from bottom to top. The liquid crystal cell includes a substrate and a frame disposed on the substrate. The frame forms a crystal filling area on the substrate. Two flow guide walls are symmetrically arranged on the side of the frame near the crystal filling assembly, and a crystal filling port is formed between the two flow guide walls. A flow divider is disposed near the crystal filling port in the crystal filling area. The flow divider and the two flow guide walls respectively form a first crystal filling channel and a second crystal filling channel. The flow guide walls have a stepped structure, so that the crystal filling port gradually increases in size from the outside to the inside.
2. The crystal-filling structure for improving poor crystal filling according to claim 1, characterized in that, The flow divider has a trapezoidal cross-section and is provided with flow divider holes.
3. The crystal-filling structure for improving poor crystal filling according to claim 2, characterized in that, The crystal filling area is also provided with a first flow-retarding component that cooperates with the first crystal filling channel, and a second flow-retarding component that cooperates with the second crystal filling channel; the first flow-retarding component and the second flow-retarding component each include a plurality of flow-retarding elements, which are arranged in a triangular array.
4. The crystal-filling structure for improving poor crystal filling according to claim 3, characterized in that, The cross-sectional shape of the flow-slowing element is teardrop-shaped.
5. The crystal-filling structure for improving poor crystal filling according to claim 3, characterized in that, The cross-sectional shape of the flow-retarding component is quadrilateral, with two opposite angles having equal angles and the other two opposite angles having unequal angles.
6. The crystal-filling structure for improving poor crystal filling according to claim 1, characterized in that, The diverting components are arranged in a row of multiple units, with equal intervals between adjacent diverting components.
7. The crystal-filling structure for improving poor crystal filling according to claim 1, characterized in that, The flow guide wall includes a first flow guide wall, a second flow guide wall inclined relative to the first flow guide wall, a third flow guide wall inclined relative to the second flow guide wall, and a fourth flow guide wall inclined relative to the third flow guide wall. The first flow guide wall is perpendicular to the frame of the adhesive frame, and the fourth flow guide wall is connected to the frame of the adhesive frame.
8. The crystal-filling structure for improving poor crystal filling according to claim 7, characterized in that, The included angle between the first guide wall and the second guide wall is 100° to 160°, the included angle between the second guide wall and the third guide wall is 145° to 160°, and the included angle between the third guide wall and the fourth guide wall is 110° to 170°.
9. The crystal-filling structure for improving poor crystal filling according to claim 1, characterized in that, The crystal-filling strip has a groove, and the first fiber layer, the sponge strip, and the second fiber layer are located within the groove.