TWI396652B - Liquid crystal residual warning system - Google Patents

Description

LCD residual warning system

The present invention relates to a warning system, and more particularly to a liquid crystal residual warning system.

Liquid crystal is a material that combines the fluidity of a liquid with a certain regular arrangement of crystals. Therefore, it is called a liquid crystal. Liquid crystal molecules are easily flowed by external forces and have an anisotropic property similar to that of a uniaxial crystal, that is, a material. Characteristics such as refractive index, dielectric constant, magnetic susceptibility, and viscosity vary with direction. Therefore, in many applications, after the liquid crystal molecules are stimulated by the outside, the arrangement of the molecules will change, and the optical or electrical properties thereof will also change, and the materials are applied to displays, photoelectric elements, sensors, and the like. On the component.

In the TFT LCD industry, liquid crystal is one of the important direct consumables, which is expensive. In order to improve the utilization rate of liquid crystal, improve the liquid crystal titration yield and reduce the cost, in the liquid crystal titration process, when the liquid crystal is replaced, the bottle recycling is reduced. The amount of liquid crystal used (residual liquid crystal) is particularly important for cost reduction.

Please refer to Figure 1. The general method is to observe the amount of liquid crystal in the bottle during the working process of the machine. It is judged by experience value whether the liquid crystal in the bottle needs to be replaced, but when the height of the liquid crystal in the bottle is lower than a certain height. When the pump is not easy to suck out the liquid crystal inside the bottle, it is even possible to absorb air bubbles, resulting in poor brightness of the liquid crystal display. In addition, there are two ways to process the residual liquid crystal. One is to pour several bottles of liquid crystal bottles with residual liquid crystal into the same liquid crystal bottle, and then reuse the liquid crystal bottle, or the liquid crystal with residual liquid crystal left. The bottle is returned to the original factory for processing, but the above two treatment methods will have a bad effect on the liquid crystal bottle with too much residual liquid crystal. If the residual liquid crystal remains too much, it will increase when poured into the same liquid crystal bottle. The probability of liquid crystal being contaminated, if it is sent back to the original factory, will increase the company's cost.

Therefore, the present invention has been directed to the above-mentioned problems, and proposes a liquid crystal residual warning system which can reduce the residual amount of liquid crystal to reduce the cost of the company.

The main object of the present invention is to provide a liquid crystal residual warning system, which can reduce liquid The residual amount of crystals to reduce the company's cost.

Another object of the present invention is to provide a liquid crystal residual warning system which can reduce the residual amount of liquid crystal, and can reduce the probability of contamination of liquid crystal when collecting the residual amount of liquid crystal.

In order to achieve the above object, the present invention provides a liquid crystal residual warning system, which comprises a liquid crystal receiving device. The liquid crystal receiving device has a body, and a base is protruded from the bottom of the body, and the base has an accommodation space for loading. The remaining liquid crystal is not larger than the inner diameter of the main body; and a sensing device is disposed near the base for detecting the residual amount of residual liquid crystal in the accommodating space.

For a better understanding and understanding of the structural features and the achievable effects of the present invention, please refer to the preferred embodiment and the detailed description.

Please refer to FIG. 2, which is a preferred embodiment of the liquid crystal residual warning system of the present invention. As shown in FIG. 2, the present invention comprises a liquid crystal accommodating device 14 and a sensing device 15. The liquid crystal accommodating device 14 has a body 16 and a bottle mouth 10. The bottom of the body 16 has a base 18 protruding outward. The base 18 has an accommodating space 20 for holding a residual liquid crystal. In the preferred embodiment, the sensing device 15 is disposed near the base 18 and is used to detect the residual amount of the residual liquid crystal in the accommodating space 20.

Referring to FIG. 3( a ), the body 16 includes a side wall disposed above the bottom of the body 16 , wherein the bottom corners 32 , 38 of the body 16 and the side walls have an arc shape, and the base 18 has a side wall, and The bottom wall and the bottom of the body 16 have a corner 34, 36 also has an arc shape, so that the residual liquid crystal is easily concentrated into the accommodating space 20 toward the base 18, and the angle of the corners 32, 34, 36, 38 is 40. Between ~60 degrees, and preferably 50 degrees. Also shown in this figure, the bottom of the body 16 is horizontally disposed.

Referring to Figures 3(a) and 3(b), the design of the liquid crystal receiving device 14 of Figure 3(b) differs from Figure 3(a) in that the bottom of the body 16 is clipped horizontally. At an angle, the residual liquid crystal is further separated from the bottom of the body 16 and is easily concentrated into the accommodating space 20 toward the base 18, and at the same time, the design of the support base 22 is also matched with the design of the liquid crystal accommodating device 14.

As shown in the preferred embodiment of FIG. 2, the inner diameter of the base 18 is no greater than the inner diameter of the body 16. As used herein, "the inner diameter of the base 18" and the "inner diameter of the body 16" refer to the distance between the inner edge of the base 18 and the inner edge of the side wall of the body 16 from its central axis, respectively. Therefore, when the geometric center of the base 18 is coaxial with the geometric center of the body 16 (ie, the base 18 is disposed at the center of the bottom of the body 16), the "the inner diameter of the base 18 is not greater than the inner diameter of the body 16", that is, The distance between the inner edge of the base 18 and the central axis is not greater than the distance from the inner edge of the side wall of the body 16 to the central axis. However, in other different embodiments, as shown in Figures 4(a) through 4(c), if the geometric center of the base 18 is not coaxial with the geometric center of the body 16, then the "base 18" The inner diameter is not greater than the inner diameter of the body 16", that is, the innermost edge of the base 18 is the shortest distance from the central axis of the base 18, and is not greater than the distance from the inner edge of the side wall of the body 16 from the central axis of the body 16.

As shown in Fig. 2, a nozzle 12 can be inserted into the extraction tube 12, and the residual liquid crystal can be sucked out by the pump and the extraction tube 12, and a support base 22 is placed for the liquid crystal receiving device 14, and the inner bottom of the support base 22 is provided. A recess 24 is provided, and the recess 24 is sufficient to accommodate the base 18, so that the liquid crystal receiving device 14 can be stably placed in a support base 22. However, in other different embodiments, as shown in FIG. 5(a), it is preferable to design a different base, for example, to form a toe 23 or a support portion on the outer side of the base 18 to exhibit a stable state. That is, the support base 22 is not required.

As shown in FIG. 5(b), the outer edge of the base 18 can also be the same width as the body 16, but there is still a receiving space 20 with a reduced inner diameter, and the outer edge and the inner edge of the base 18 are solid, so The liquid crystal receiving device 14 can not only present a stable state, but also has an accommodating space 20 for accommodating residual liquid crystal. As shown in Fig. 5(b), at this time, since the liquid crystal accommodating device 14 can be in a stable state, it is not necessary to use the support base 22.

In addition, in other different embodiments, in order to further consider the stability of the placement of the liquid crystal receiving device 14, as shown in FIG. 5(c), the structure of the base 18 may be designed to be slightly from the side wall of the body 16. The outer protrusions are formed to form the toe portion 23. At this time, the volume of the accommodation space 20 in the base 18 can be enlarged correspondingly, but the "inner diameter of the base 18" is preferably not more than "the inner diameter of the body 16".

As shown in the preferred embodiment of FIG. 2, the sensing device 15 includes a reflective sensor 28 and a counter The shooting plates 30 are disposed opposite to each other on the bottom sides of the support base 22 and located near the base 18, and an alarm 26 is disposed at the upper end of the support base 22 and connected to the reflective sensor 28, and the reflective sensor 28 is provided. The reflector 30 is used to detect the residual amount of residual liquid crystal in the accommodating space 20.

Referring to FIG. 2, the base 18 of the liquid crystal receiving device 14 of the present invention is designed to have a specific height H, which is between 3 and 9 centimeters (mm), and can be accommodated with different bases 18 The space 20 varies in size and is preferably 6 cm. When the liquid level of the residual liquid crystal is higher than the specific height H, the reflective sensor 28 can first emit a residual light to penetrate the residual liquid crystal in the accommodating space 20, and then reflect the projected light through the accommodating space 20 through the reflecting plate 30. When it is received by the reflective sensor 28, when the liquid level of the residual liquid crystal in the accommodating space 20 is higher than the specific height H, the residual liquid crystal in the accommodating space 20 is reflected when the projected light is reflected, and the reflective sensing is performed. The device 28 cannot sense the intensity change of the projected light, and thus cannot output an inductive signal, and the alarm 26 cannot receive the inductive signal and cannot issue an alarm signal. In a preferred embodiment, in order to prevent the energy of the projected light itself from changing and affecting the properties of the liquid crystal material, the reflective light emitted by the reflective sensor 28 used in the present invention preferably includes, but is not limited to, Visible light such as infrared rays to reduce the possibility of causing liquid crystal deterioration. However, in other different embodiments, other types of reflective sensors 28 that emit light of different frequencies and wavelengths may be used to detect before the energy of the projected light itself does not cause the liquid crystal to change. The amount of residual liquid crystal in the accommodating space 20 is small.

Please refer to FIG. 6 , which is a schematic structural diagram of the device at the time of warning. When the liquid level of the residual liquid crystal is lower than a certain height H, the projection light emitted by the reflective sensor 28 does not pass through the accommodating space. The residual liquid crystal in 20, the reflective sensor 28 can sense the intensity change of the projected light and output an inductive signal, and after receiving the sensing signal, the alarm 26 also sends an alarm signal to remind the user to replace the liquid crystal. In addition, in other different embodiments, when the liquid crystal surface is lowered to the H height, the first alarm is issued by the alarm to prompt the preparation for replacement of the liquid crystal, and a signal is further fed back to the pump and the extraction tube 12 . To slow down the speed of liquid extraction.

The above embodiment of the present invention utilizes the reflective sensor 28 of the sensing device to detect the residual amount of the liquid crystal. In addition, the sensing device 15 can also use other devices such as a weight sensor and a contact sensor instead of detecting the liquid crystal. The residual amount will be further described as follows.

Referring to FIG. 7, the present invention is designed to have a specific weight, the specific weight value is between 10 and 40 grams, and when the bottom area of the accommodating space 20 is 5024 square centimeters, the liquid level of the residual liquid crystal is At 6 cm, preferably a specific weight value of 30 grams, the sensing device 15 includes a weight sensor 40 and an alarm 26, and the weight sensor 40 is disposed at the bottom of the base 18, when the weight sensor 40 senses residual liquid crystal weight is higher than When the weight value is different, the weight sensor 40 and the alarm 26 are not activated. When the weight sensor 40 senses that the residual liquid crystal weight is lower than a specific weight value, an induction signal can be output, and the alarm 26 is connected to the weight sensor 40. The signals are connected. When the alarm 26 receives the sensing signal, the alarm 26 sends an alarm signal to remind the user to replace the liquid crystal.

Referring to FIG. 8, the present invention is designed to have a specific height H which is between 3 and 9 cm, and preferably 6 cm. The sensing device 15 includes a contact sensor 42 and The alarm device 26 floats the contact sensor 42 on the residual liquid crystal. When the liquid level of the residual liquid crystal in the accommodating space 20 is higher than the specific height H, the contact sensor 42 and the alarm 26 do not operate. When the liquid level of the residual liquid crystal in the accommodating space 20 is lower than the specific height H, the contact sensor 42 can sense that the liquid level of the residual liquid crystal is lower than the specific height H and output an inductive signal. The alarm device 26 is connected to the contact sensor 42. When the alarm device 26 receives the sensing signal, the alarm device 26 sends an alarm signal to remind the user to replace the liquid crystal. In addition, Table 1 shows the liquid crystal residual amount reduced by using the design of the present invention for the 500 cc liquid crystal container, and Table 2 shows the reduction of the residual liquid crystal amount by the monthly production capacity.

It can be seen from the above two tables that the liquid crystal accommodating device designed by the present invention can greatly reduce the residual amount of liquid crystal.

In summary, the present invention can reduce the residual amount of liquid crystal, not only can reduce the cost of the company, but also reduce the probability of contamination of the liquid crystal when the residual amount of liquid crystal is collected.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims of the present invention are equally varied and modified. All should be included in the scope of the patent application of the present invention.

10‧‧‧ bottle mouth

12‧‧‧ extraction tube

14‧‧‧Liquid accommodating device

15‧‧‧Sensor

16‧‧‧Ontology

18‧‧‧Base

20‧‧‧ accommodating space

22‧‧‧ Support

23‧‧‧ toe

24‧‧‧ recess

26‧‧‧Announcer

28‧‧‧Reflective sensor

30‧‧‧reflector

32‧‧‧Connected

34‧‧‧Connected

36‧‧‧Connected

38‧‧‧Connected

40‧‧‧Weight sensor

42‧‧‧Contact sensor

Figure 1 is a schematic view of the structure of the prior art device.

2 is a schematic view showing the structure of a liquid crystal accommodating device and a liquid crystal residual warning system having the same according to the present invention.

Fig. 3(a) is a view showing a preferred embodiment of the liquid crystal accommodating device of the present invention.

Fig. 3(b) is another preferred embodiment of the liquid crystal accommodating device of the present invention.

4(a) to 4(c) are diagrams showing an embodiment in which the center axis of the body and the base are not coaxial.

Figures 5(a) through 5(c) illustrate embodiments of various stable support states of the present invention.

Figure 6 is a schematic view showing the structure of the device at the time of warning according to the present invention.

FIG. 7 is a schematic structural view of a device at the time of warning according to another embodiment of the present invention.

FIG. 8 is a schematic structural view of a device at the time of warning according to still another embodiment of the present invention.

10‧‧‧ bottle mouth

12‧‧‧ extraction tube

14‧‧‧Liquid accommodating device

15‧‧‧Sensor

16‧‧‧Ontology

18‧‧‧Base

20‧‧‧ accommodating space

22‧‧‧ Support

23‧‧‧ toe

24‧‧‧ recess

26‧‧‧Announcer

28‧‧‧Reflective sensor

30‧‧‧reflector

Claims (12)

A liquid crystal residual warning system includes: a liquid crystal receiving device having a body, a bottom of the body protruding outwardly, wherein the base has an accommodating space for holding a residual liquid crystal, and the base The inner diameter is not larger than the inner diameter of the body; the body includes a side wall disposed above the bottom of the body, wherein the bottom of the body and the side wall have an arc shape, so that the residual liquid crystal is easy to the base Concentrating into the accommodating space; the base has a vertical side wall, and the vertical side wall and the bottom of the body have an arc shape at an angle, so that the residual liquid crystal easily flows into the accommodating space; The measuring device is disposed in the vicinity of the pedestal and is disposed outside the accommodating device, and is disposed perpendicular to the vertical sidewall and is configured to detect the residual amount of the residual liquid crystal in the accommodating space, and includes a reflective The sensor has a reflector, and the reflective sensor is disposed adjacent to the base, and firstly emits a projection light to penetrate the residual liquid crystal in the accommodating space, and the projection is projected by the reflector Reflected by the accommodating space, received by the reflective sensor; wherein when the liquid level of the residual liquid crystal in the accommodating space is lower than a specific height, the projected light does not pass through when reflected Storing the residual liquid crystal in the space, the reflective sensor can sense the intensity change of the projected light to output an inductive signal; and an alarm is connected to the reflective sensor signal, wherein the alarm is Receiving the sensing signal, the alarm sends an alarm signal. The liquid crystal residual warning system according to claim 1, further comprising a support base, the inner bottom of the support base is provided with a recess, and the recess is sufficient for The base is mounted to enable the liquid crystal receiving device to be stably placed in the support base. The liquid crystal residual warning system according to claim 1, wherein the specific height is between 3 and 9 cm. The liquid crystal residual warning system of claim 1, wherein the liquid crystal receiving device is stably placed in a support base, and the reflective inductor and the reflective plate are disposed opposite to each other on the support base. On both sides of the bottom, the alarm is placed at the upper end of the support. The liquid crystal residual warning system of claim 1, wherein the bottom of the body is horizontal or at an angle to the horizontal. The liquid crystal residual warning system according to claim 1, wherein the angle of the joint is between 40 and 60 degrees. A liquid crystal accommodating device has a body, and a base is protruded outwardly from the bottom of the body, the base has an accommodating space for holding a residual liquid crystal, and the inner diameter of the base is not larger than the inner body of the body The main body includes a side wall disposed above the bottom of the main body, wherein a corner of the bottom of the main body and the side wall has an arc shape, so that the residual liquid crystal is easily concentrated into the accommodating space to the accommodating space; The utility model has a vertical side wall, and the vertical side wall and the bottom of the body have an arc shape at an angle, so that the residual liquid crystal can easily flow into the accommodating space. a sensing device is disposed adjacent to the base and disposed perpendicular to the vertical sidewall, wherein the sensing device is configured to detect the amount of the residual liquid crystal and determine whether to issue an alarm signal to remind the user Whether to replace the liquid crystal receiving device, The method includes a reflective sensor, and the reflective sensor is disposed adjacent to the base, and firstly emits a projection light to penetrate the residual liquid crystal in the accommodating space, and the The reflective plate reflects the projected light back through the accommodating space, and is received by the reflective sensor; wherein, when the liquid level of the residual liquid crystal in the accommodating space is lower than a specific height, the reflected light is reflected When the residual liquid crystal in the accommodating space is not passed, the reflective sensor can sense the intensity change of the projected light to output an inductive signal; and an alarm is connected to the reflective sensor signal. When the alarm receives the sensing signal, the alarm sends an alarm signal. The liquid crystal accommodating device of claim 7, further comprising a support base, the inner bottom of the support base is provided with a recess, and the recess is sufficient for accommodating the base, so that the liquid crystal receiving device can be stabilized Placed in the support. The liquid crystal accommodating device of claim 7, wherein the bottom of the body is horizontally or at an angle to the horizontal. For example, the liquid crystal residual warning system described in claim 7 wherein the angle of the joint is between 40 and 60 degrees. The liquid crystal residual warning system of claim 7, wherein the specific height is between 3 and 9 cm. The liquid crystal residual warning system of the seventh aspect of the invention, wherein the liquid crystal receiving device is stably placed in a support base, and the reflective inductor and the reflective plate are disposed opposite to each other on the support base. On both sides of the bottom, the alarm is placed at the upper end of the support.