TW200428064A - Contamination detecting method of liquid crystal cell panel and its sampling tool - Google Patents

Abstract

A contamination detecting method of liquid crystal cell panel includes the steps of: (a) providing a liquid crystal cell panel; (b) using a sampling tool to obtain a liquid crystal sample from the surface of liquid crystal cell panel; ?using a solution to wash away the liquid crystal sample from the sampling tool; (d) analyzing the components of liquid crystal sample; and (e) computing the concentration of the components to determine whether the liquid crystal cell panel is contaminated.

Description

200428064

V. Description of the invention (1) [Technical field to which the invention belongs] Sampling method. The present invention relates to a kind of liquid crystal contamination detection method, particularly a kind of liquid crystal sampling method using a sampling tool. [Previous technology] A liquid crystal display technology is widely used. Used by computers, sub-tables, mobile phone screens, and hospitals: m-plane: Rong curtain, etc., 'Liquid crystal_display is a liquid crystal range with both liquid and crystalline properties. meaning. Therefore, "liquid crystals are not irrelevant." The thief is liquid and has the characteristics of liquid flow. The phenomenon that the optical characteristics of the body change the arrangement of the molecules' and can be: the effect of the binary to the voltage. 』From the deflection of the incoming light, the liquid crystal display attracts everyone ’s attention with its thinness and flicker-free, mainly a"., The advantages of the radiation temple umbrella Xi 1) 5 ^^^^ t ^^ LCDVV'AVliLrr1 crystal display ( TN-LCD), AMJ & knife is twisted nematic liquid

-LCD panels are currently two major categories in the market, including T TL, among which W is in three stages: First, the process of the panel is mainly divided into 溥 film transistor element array substrate manufacturing process. The process is to form a thin film electric vehicle on a glass substrate, and then the LCD cell panel assembly (Ce 11 process).

200428064

To do this is to break the glass up and down (the panel panel is filled with liquid crystal; 凉 ^ ^ ^ ^ ^ ^ is filled with liquid crystal; the last name is Yuan Liangyue / color 扃 first film] and paste 5 and the process is as follows: Adhere to the assembly of a panel panel (the front part of the Module or lcm group is completed externally, and after the LCD display process is assembled, then the $ 4 (] drive κ and signal circuit board) is sent back. The panel is cut to make it a backlight module of appropriate size.

One of the problems of the environment and the liquid surface is that the problem is caused by the contamination of the LCD panel: soldering, etc. = foreign objects generated by operations such as unit cell engineering, etc. may also generate static noise due to friction: liquid = Liquid crystal panel tape is being cut or conveyed; if the foreign matter on the panel is not removed, the defective rate increases with installation, and then it is 20%: it can cause optical defects of the components of the liquid crystal display device. Moreover ... "The production efficiency of human shellfish is lowered ', which causes the production of liquid crystals, which is called liquid storage :: dyes must pass through the original material or the packaging process. It is necessary to measure the final state of this. Therefore, eight +, = The method of picking up and testing the day and night is based on the array circuit inspection method

: Square: class = 工 :: is optical Γ, electrical square = pattern in the case is not good

: 疋 The same method is used for array memory circuits to test semiconductor memory elements. A condenser is formed on the array circuit, and the actual LCD

Page 5 200428064 V. Description of the Invention (3) The same TFT is written and read with current (charge) in order to check its abnormal defective products. The electro-optical method is described as a detection method between the two methods. Indium tin oxide (ITO), which is a bitter potential written by electric charges, refers to an electro-optical element and generates an optical image transformation to check whether Both methods can be used to find the location of the fault and the information about the fault, and the types of faults can be classified by various fault causes and electrical characteristics. However, it is impossible to know clearly the degree of the pollution source of the liquid crystal. In particular, because of the difficulty of sampling, there is currently no appropriate measurement to quantitatively analyze each photoluminescence (CeU) of the TFT. The present invention intends to do a more detailed quantitative analysis of pollutants, and requires a method and a sampling tool . [Summary of the Invention] With this in mind, the pollution sampling tool of the present invention analyzes its concentration and composition on the panel without accuracy. ^ The other purpose of Mingming is to provide a kind of liquid crystal cell panel measurement method, which is completely different from the conventional electrical measurement method. It can crystallize and measure the concentration of pollutants in the liquid crystal, and more accurately quantify the concentration of the substance. Detecting the stated purpose of the invention is to provide a liquid crystal cell surface electronic signal which is bounded by an electric appliance and the same electric potential. The relationship between the above types and other points is added or concentrated. The purpose of contamination measurement is to provide a liquid crystal that accurately extracts liquid crystals containing contaminated panels that affect the cell panel of the panel. Sampling solution to analyze the contamination of the contaminated panel (b) The following methods are used for the detection method: (a) providing a liquid crystal cell panel; 200428064 V. Description of the invention (4) A sampling tool obtains a liquid crystal sample from the surface of the liquid crystal cell panel; c) the liquid crystal sample is washed down from the sampling tool by shaking a solvent; (d) analyzing the components of the liquid crystal sample; and (e) determining the concentration of the components to determine whether the liquid crystal cell panel is contaminated. In a preferred embodiment, the liquid crystal cell panel contamination detection method further includes a step of providing a standard value. When the concentration of the component exceeds the standard value, the liquid crystal cell panel is determined to be contaminated. In addition, the solvent is the same as that of propylene. In addition, the sampling tool has a first surface and a second surface, and the first and second surfaces each have a plurality of particles, so that the liquid crystal is easily adsorbed on the first and second surfaces. The sampling tool is made of Teflon. The invention further provides a liquid crystal cell panel contamination detection method including the following steps: (a) providing a liquid crystal cell panel; (b) using a sampling tool to obtain a plurality of liquid crystal samples from different places on the surface of the plurality of blocks; (c) using The solvent flushes the plurality of liquid crystal samples from the sampling tool; (d) analyzes the components of the plurality of liquid crystal samples; and (e) determines the concentration of the plurality of components to determine whether the liquid crystal cell panel is contaminated. In a preferred embodiment, the liquid crystal cell panel contamination detection method further includes a step of dividing the liquid crystal cell panel into a plurality of blocks, wherein step (b) is to take a liquid crystal sample in the mother-block. In addition, the liquid crystal cell panel is divided into nine blocks. Also, plural blocks are arranged in an array. The array is 3x3.

0632-9840twf (nl); AU030101S; Yuchia.ptd page 7 200428064 V. Description of the invention (5) In a preferred embodiment, the method for detecting the contamination of a liquid crystal cell panel further includes a step of providing a standard value, when the plural components If the concentration exceeds the standard value, the LCD panel is judged to be contaminated. The solvent is monoacetone. In addition, the sampling tool has a first surface and a second surface, and the first and second surfaces each have a plurality of particles, so that the liquid crystal is easily adsorbed on the first and second surfaces. The sampling tool is made of Teflon. The invention further provides a sampling tool for detecting the contamination of a liquid crystal cell panel, which includes a main body and a plurality of particles, wherein the main body includes a top end, a middle part, and a bottom end, the middle part connects the top end and the bottom end, and the middle part includes a A first surface and a second surface, the first surface and the second surface being opposite surfaces, and the bottom end including a third surface, wherein the third surface is connected to the first surface, and a plurality of particles are disposed on the first surface, On the second surface and the third surface. The sampling tool is made of Teflon. The sampling tool is made of a flexible material. The sampling tool further includes a handle disposed on the top of the main body. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is described below in conjunction with the accompanying drawings, and described in detail as follows: [Embodiment] In order to More detailed quantitative analysis of pollutants, the present invention

0632-9840twf (nl); AU0301018; Yuchia.ptd page 8 200428064 V. Description of the invention (6) Provide a liquid crystal cell panel contamination measurement method and a sampling tool. As shown in Figs. 1, 2a, and 2b, the present invention extracts liquid crystals 2 containing contaminants on a panel 200 through a sampling tool 10, and measures the liquid crystal 2 by the liquid crystal cell panel contamination measurement method of the present invention. The concentration and composition of the pollutants in 2 will not affect the accuracy of sampling pollution by the edge of the panel 200, especially the closer the liquid crystal 22 is near the edge of the panel, the higher the pollution concentration. Generally, the contamination of liquid crystals includes metal ions, such as N. Therefore, sampling must be performed to know the concentration of N 3 * +. The sampling tool of the present invention will be described in detail below.

As shown in Figure 2a, the sampling tool 10 for the pollution detection of the liquid crystal cell panel 200 includes a main body 100 and a plurality of particles 14, wherein the main body 100 includes a top end 11 and a middle part 1 2 And a bottom end 1 3, a middle part 12 connecting the top end 11 and the bottom end 12, the middle part 12 includes a first surface 121 and a second surface 122, the first surface 121 and the second surface 122 are opposite surfaces, and The bottom end 13 includes a third surface 131, wherein the third surface 131 is connected to the first surface 121, and the particles 14 are disposed on the first surface 1 2 1, the second surface 1 2 2, and the second surface 131. The material of the sampling tool in this embodiment is mainly the material that does not dissolve the pollutants. For example, Teflon itself has stable properties and will not easily cause chemical changes with the pollutants. Therefore, the sampling tools are usually made by Teflon. In addition to the manufacturing process, the material must be flexible, which can bend the sampling tool 10, as shown in Figure 2b. When the liquid crystal sample 22 is scraped, Teflon itself does not have a strong adsorption force, so in The plurality of particles 14 on the surface of the sampling tool cause capillary phenomena 'to make the liquid crystal 22 easily adhere to the particles 14'. Although not shown in the figure, the sampling tool may further include a handle disposed on the top end 11 of the main body 100.

0632-9840twf (nl); AU0301018; Yuchia.ptd Page 9 V. Description of the invention (7) This embodiment may have a surface, a plurality of particles and granules. Examples of making the sampling tool 10 have rough surface dyes easily adsorbed Capillary phenomenon can be generated on the surface, so that the staining is shown in Figure 3, which is the liquid of the present invention. Please refer to Figure 3 and the flow chart of the pollution detection method of the solid-state panel. S301) 'In order not to be provided by the surface β plate 20 ^, the LCD cell panel 200 (step accuracy, the edge of the liquid crystal cell 2 0 1 can affect its sampling pollution standards from the plural block surface two = 0 0 separated sampling, Use a sampling tool 10 sampling tool 10 to obtain a sample to obtain a plurality of liquid crystal samples (S3 0 2), take the liquid crystal sample by the sampler ^ 'use a solvent (usually using acetone) will be a plurality of 33 0 2 and 33 0 3 until Take 2 × 30 and wash it down (33 03); repeat the above steps to analyze the multiple liquid crystals;: T:] block of liquid crystal samples (S304), then the next area is filled with the components and concentrations (S3 0 5), and determine the concentration of #, -wood, and nine components every 200 days (S3 06) to determine whether the liquid crystal cell panel 200 疋 is cleverly dyed (S 3 07). -The steps S3 02 ~ S30 4 include the step of partition sampling. ° θ No, the LCD panel 2 0 is divided into plural blocks: TFT-1, TFT-2, TFT-3, TFT-4, TFT -5, TFT-6, TFT-7, and TFT-8 use GL9 to take a liquid crystal sample in the block. The Wei area is arranged in an array of 3x3. In other words, the LCD panel is separated by 2 0 0. Block, each block has a fixed area, and each grid is about η from the edge of the glass. "Η 仏 K application method" On each block, the above-mentioned sampling tool 10 is used to take the liquid crystal measured by ^, so it is not It will touch the edge of the panel. The following describes the analysis and calculation method of the liquid crystal concentration of pollutants, and refer to steps S3 05 ~ S3 0 9 in Fig. 3. Analyze the liquid crystal fee of each block. 0632-9840twf (nl); AU0301018; Yuchia.ptd Page 10 200428064

Among the components and concentrations, the present invention uses a quantitative calculation of the concentration of the pollutants. The liquid crystal solution scraped by the sampling tool 10 is collected, and the volume of the liquid crystal sample obtained in each of the blocks is v, and the concentration of the liquid crystal sample is measured. For area C (S3 0 5), calculate the volume of the liquid crystal in each block. For example, when the 0 plate is divided into nine blocks, as shown in Figure 5, Figure 5 is the liquid crystal of the present invention ^ Schematic diagram of the size of TFT-1 in one block of the panel. The liquid in each block is the unit cell V (L * W * H / 2) / 9 where L = the length of the liquid crystal block; W = the length of the liquid crystal block. Width; H / 2 = 1/2 of the height (η) of the liquid crystal block; through the chemical analysis of the concentration of each pollutant or component in the liquid crystal sample (S3 0 5), obtain the test concentration (Cq) of each liquid crystal sample, With the following formula: c = cG * (V / vQ), the true concentration c of the reduced pollutant is reduced (step S3 0 6) 〇 After step S 3 0 6, it is determined whether the concentration is higher than the standard value (s 3 〇7 ), The standard value of the component ^ + is usually between 2000 and 3 0 0 1). When the concentration of the component "+ exceeds this standard value, the liquid crystal cell panel is judged as Contamination (S 3 0 8), as shown in Fig. 6, shows an experimental data. The concentration of TFT-1 and TFT-2 in the block 001 near the edge of the panel is 559ppb and 335ppb, which are significantly higher than the standard value. The upper limit is 3 0 0 ppb, so the panel can be determined to be contaminated by the measurement method of the present invention. If the concentration C of each block is less than the standard value, the liquid crystal cell panel passes the test (S 3 0 9). The above-mentioned liquid crystal cell panel contamination detection method can be partitioned sampling

200428064 V. Description of the invention (9) Liquid crystal and measurement of the concentration of pollutants in liquid crystal, more accurate quantitative analysis of the concentration of pollutants. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

0632-9840twf (nl); AU0301018; Yuchia.ptd Page 12 200428064 Brief description of the drawing Figure 1 is a schematic front view of the liquid crystal cell panel pollution detection sampling tool of the present invention; Figure 2a is the liquid crystal cell panel pollution detection sampling of the present invention Tool side schematic diagram; Figure 2b is a side schematic diagram of the bending state of the liquid crystal cell panel contamination detection sampling tool of the present invention; Figure 3 is a flowchart of the liquid crystal cell panel contamination detection method of the present invention; Figure 4 is a liquid crystal cell of the present invention Panel partitioning is not intended; FIG. 5 is a schematic diagram of the size of one block TFT-1 of the liquid crystal cell panel of the present invention; and FIG. 6 is a schematic diagram of the concentration of each block of the liquid crystal cell panel of the present invention. Explanation of symbols 1 0 ~ sampling tool; 11 ~ top; 1 2 ~ middle part; 1 3 ~ bottom end; 1 4 ~ particles; 2 2 ~ liquid crystal; 100 ~ main body; 121 ~ first surface; 1 2 2 ~ second Surface; 131 ~ third surface;

0632-9840twf (nl); AU0301018; Yucliia.ptd page 13 200428064 The diagram briefly explains 2 0 0 ~ LCD panel; 2 0 1 ~ Edge; TFT-1, TFT-2, TFT-3, TFT-4, TF Ding Yi 5, TFT-6, TFT-7, TFT-8, and TFT-9 ~ blocks; L · ~ length; W ~ width; II ~ height.

0632-9840twf (nl); AU0301018; Yuchia.ptd page 14

Claims (1)

200428064 6. Scope of patent application 1. A method for detecting the contamination of a liquid crystal cell panel, comprising the following steps: (a) providing a liquid crystal cell panel; (b) obtaining a liquid crystal sample from the surface of the liquid crystal cell panel using a sampling tool; (c ) Washing the liquid crystal sample from the sampling tool using a solvent; (d) analyzing the components of the liquid crystal sample; and (e) determining the concentration of the components to determine whether the liquid crystal cell panel is contaminated. 2. The method for detecting the contamination of a liquid crystal cell panel as described in item 1 of the scope of the patent application, further includes the step of providing a standard value. When the concentration of the component exceeds the standard value, the liquid crystal cell panel is determined to be contaminated. 3. The method for detecting the contamination of a liquid crystal cell panel according to item 1 of the scope of patent application, wherein the solvent is acetone. 4. The liquid crystal cell panel contamination detection method according to item 1 of the patent application, wherein the sampling tool has a first surface and a second surface, and the first and second surfaces each have a plurality of particles, so that The liquid crystal is easily adsorbed on the first and second surfaces. 5. The liquid crystal cell panel contamination detection method as described in item 4 of the patent application scope, wherein the sampling tool is made of Teflon. 6. —A method for detecting the contamination of a liquid crystal cell panel, including the following steps: (a) providing a liquid crystal cell panel; (b) using a sampling tool to obtain a plurality of liquid crystal samples from different places on the surface of the blocks; (c) The solvent is used to flush the liquid crystal samples from the sampling tool; 0632-9840twf (nl); AU0301018; Yuchia.ptd page 15 200428064 VI. Patent application scope (d) Analyze the components of these liquid crystal samples; and (e) Find the concentration of these components to judge the liquid crystal cell panel Whether it is contaminated. 7. The method for detecting the contamination of a liquid crystal cell panel as described in item 6 of the scope of patent application, further comprising the step of dividing the liquid crystal cell panel into a plurality of blocks, wherein step (b) is to take a liquid crystal in each block sample. 8. The liquid crystal cell panel contamination detection method according to item 7 of the patent application scope, wherein the liquid crystal cell panel is divided into nine blocks. 9. The liquid crystal cell panel contamination detection method according to item 6 of the scope of patent application, wherein the blocks are arranged in an array. I 0. The method for detecting contamination of a liquid crystal cell panel according to item 9 of the scope of the patent application, wherein the array is 3 × 3. II. The method for detecting the contamination of a liquid crystal cell panel as described in item 6 of the scope of the patent application, further comprising the step of providing a standard value. When the concentration of these components exceeds the standard value, the liquid crystal cell panel is determined to be contaminated. 1 2. The method for detecting the contamination of a liquid crystal cell panel according to item 6 of the patent application scope, wherein the solvent is acetone. 1 3. The method for detecting the contamination of a liquid crystal cell panel according to item 6 of the scope of the patent application, wherein the sampling tool has a first surface and a second surface, and the first and second surfaces each have a plurality of particles, so that The liquid crystal is easily adsorbed on the first and second surfaces. 14. The method for detecting the contamination of a liquid crystal cell panel according to item 13 of the scope of patent application, wherein the sampling tool is made of Teflon. 1 5. —Sampling tools for LCD panel contamination detection, including: 0632-9840twf (nl); AU0301018; Yuchia.ptd Page 16 200428064 6. The scope of patent application A main body includes a top end, a middle part and a bottom end, the middle part connects the top end and the bottom end, and the middle two surfaces , The first surface and the first and third surfaces, wherein the third plurality of particles are disposed on the third surface. 16. If the sampling tool for the first scope of the patent application is applied, which should be taken as 17. · If the sampling tool for the first scope of the patent application is used for the test, which should be taken as 1 8. If the sampling tool for the first scope of the patent application is used, it also includes a The part includes a first surface and a second surface that are opposite sides, and the bottom package surface is connected to the first surface; and the first surface, the second surface, and the contamination of the liquid crystal cell panel described in 5 items The sample tool was made of Teflon. The contamination-like tool of the LCD panel described in item 5 is made of a flexible material. The contamination handle of the liquid crystal cell panel according to item 5 is provided on the top of the main body. 0632-9840twf (nl); AU0301018; Yuchia.ptd page 17