TWI308233B - Method and collecting tool to inspect a liquid crystal panel - Google Patents

Description

Case No. 92115516 1308233 Amendment 5, Description of the Invention (1) Technical Field of the Invention The present invention relates to a liquid crystal contamination detecting device, in particular to a liquid sampling method using a sampler and a sampler, Daily sampling method. [Prior Art] At present, liquid crystal display technology is widely used in computers, t-tables, mobile phone screens, medical products, electronic displays, screens on digital cameras, etc., instruments used in liquid crystal display or: this component, Because the liquid crystal is between the solid = material =

In the range of substances with both liquid and crystalline properties, the state of 2: it is named "LiquidCrystai", and = Γ 晶 晶 二 , , , , , , , 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶The molecules are affected by the voltage, changing the arrangement of their molecules' and allowing the incident light to produce a phenomenon.

LCD monitors attract many people's attention because of their slimness, no flash, no radiation, etc. ‘mainly a liquid crystal panel (LCD)

Panel) display, generally more common LCD can be divided into twisted nematic liquid crystal display (TN-LCD), super twisted nematic liquid crystal display (STN-LTD) and thin film transistor liquid crystal display (TFT_LCD) and other three categories, The TtT-LCD panel is the mainstream in the current market. The process of the TFT_lCD panel can be mainly divided into two stages: firstly, it is called a thin film transistor array substrate process (Array or Panel process), and the process is to form a thin film transistor on a glass substrate. (TFT) array; followed by liquid crystal cell panel assembly ((: 611 process),

1308233 --- Case No. 92115516__年月 η ^'Invention Description (2) The process is to put the upper and lower glass (array panel and color filter, into the liquid crystal; finally called the LCD panel module, 〇 ^ '

Process), the process is to combine the components such as panel 〇, 〇ule or LCM circuit board, etc., in detail, the group, drive and control group complete the external materials (such as driver IC and:: display process model) After that, the liquid crystal panel is inserted into the second and second; K circuit board) into the backlight module new installation area, and the spot is made up of the appropriate size of the optical 2 backlight module, the light guide plate, the lamp tube, etc. θ τ 仃 不过 , , 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶And other issues. In addition, when the liquid crystal panel is cut or rotated, π rubbing: generating static electricity makes it easier to adsorb the foreign matter on the liquid crystal panel if it is not removed, but with the liquid port; r: r, it is possible ! The assembly of the liquid crystal display device is not the same, and the output efficiency of the operator is lowered, causing the product to be light, & ί1, when the contaminant enters the liquid through the raw material or the package.

^. The final state of the liquid crystal in the liquid crystal cell, therefore, the concentration of these contaminants must be accurately =. 'after taking L

, go, I:: ί The detection method of the liquid crystal display is to check the square side by the array circuit. ΐ The method is optical method, electric cymbal method or electro-optical method. The method is to compare with the adjacent pattern to extract the area with poor pattern in LCD ^. The method of the method of the sex, the same circuit is tested on the circuit using the semiconductor memory element. The circuit is formed on the circuit (c〇ndenser), and the actual LCD is used.

1308233 Case No. 92115516_Yearly Month_Amendment V. Invention Description (3) The same TFT generates an electronic signal for writing and reading by current (charge) to check for an abnormal defect. The method of electro-optics is a detection method between the two methods. The charge-writing accumulator and the inpotential tin oxide (Indium Tin Oxide, ΙΤ0) electrode potential pass through the electro-optical element to produce an optical image. Transform to check for defective products. All of the above methods can obtain information such as the location of the bad position and the type of the bad shape, and the bad type can be classified by the relationship between various adverse causes and electrical characteristics. However, the composition or concentration of the source of the liquid crystal cannot be clearly known. In particular, because of the difficulty of sampling, there is currently no suitable measurement method for quantitatively analyzing each cell of the TFT. The problem to be solved by the present invention is to perform a more detailed quantitative analysis of the contaminant and a pollution measurement is required. Method and a sampling tool. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a liquid crystal cell panel=staining sampling tool 'selectively extracting liquid crystals containing contamination on a panel, and the concentration=concentration and composition' are not affected by the edge of the panel. The accuracy of its dyeing. Another object of the present invention is to provide a liquid crystal cell panel contamination detection method, which is completely different from the conventional electrical measurement method, can partition the sampling liquid: and measure the concentration of the pollutant in the liquid crystal, and more accurately determine the concentration concentration. In order to achieve the above (4), the present invention provides a method for contamination detection of a liquid crystal cell panel comprising the steps of: (a) providing a liquid crystal cell panel; (b) utilizing page 6 1 1308233 _ case number 92115516_年月日日__ 5. Description of the invention (4) A sampling tool takes a liquid crystal sample from the surface of the liquid crystal cell panel; (C) uses a solvent to flush the liquid crystal sample from the sampling tool; (d) analyzes the composition of the liquid crystal sample; and (e) seeks The concentration of the ingredients is determined to determine whether the liquid crystal cell panel is contaminated. In a preferred embodiment, the method for detecting contamination of a liquid crystal cell panel further comprises the step of providing a standard value, and when the concentration of the component exceeds a standard value, the liquid crystal cell panel is judged to be contaminated. Further, the solvent is acetone.

Further, 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. Also, the sampling tool is made of Teflon. The invention further provides a liquid crystal cell panel pollution detecting method comprising the steps of: (a) providing a liquid crystal cell panel; (b) using a sampling tool to obtain a plurality of liquid crystal samples from different portions of the plurality of blocks; (c) using The solvent rushes 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 method for detecting contamination of the liquid crystal cell panel further comprises the step of dividing the liquid crystal cell panel into a plurality of blocks, wherein the step (b) is to take a liquid crystal sample in the mother cell. Also, the liquid crystal cell panel is divided into nine blocks. Also, the plurality of blocks are arranged in an array. Also, the array is 3 X 3 .

Page 7 1308233 _ Case No. 92115516_年月日日__ V. Description of the Invention (5) In a preferred embodiment, the method for detecting contamination of a liquid crystal cell panel further comprises the step of providing a standard value, when the concentration of the plurality of components When the standard value is exceeded, the liquid crystal cell panel is judged to be contaminated. Further, the solvent is acetone. Further, 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. Also, the sampling tool is made of Teflon. The present invention further provides a sampling tool for contamination detection of a liquid crystal cell panel comprising a main body and a plurality of particles, wherein the main body includes a top end, an intermediate portion and a bottom end, the middle portion connects the top end and the bottom end, and the middle portion includes a middle portion a first surface and a second surface, the first surface is opposite to the second surface, and the bottom end includes a third surface, wherein the third surface is coupled to the first surface, and the plurality of particles are disposed on the first surface, On the second surface and the third surface. Also, the sampling tool is made of Teflon. Also, the sampling tool is made of a flexible material. Moreover, the sampling tool further includes a handle disposed at the top of the body. The above and other objects, features and advantages of the present invention will become more apparent and understood. More detailed quantitative analysis of contaminants, the present invention

1308233 _ Case No. 9211551 fi_年月日日 JL·__ V. Invention Description (6) A liquid crystal cell panel pollution measuring method and a sampling tool are provided. As shown in Figures 1, 2a and 2b, the present invention extracts a liquid crystal 22 containing contaminants on a panel 200 via a sampling tool 10, and measures the concentration of contaminants in the liquid crystal 22 by the liquid crystal cell panel contamination measuring method of the present invention. With the composition, the accuracy of the sample contamination is not affected by the edge of the panel 200, especially the closer to the liquid crystal 22 at the edge of the panel, the higher the contamination concentration. Usually, the liquid crystal contaminant includes a metal ion such as N, so it is necessary to sample to know the concentration of Na+. The sampling tool of the present invention will be described in detail below. As shown in FIG. 2a, the sampling tool 10 for contamination detection of the liquid crystal cell panel 200 includes a main body 100 and a plurality of particle crucibles 4, wherein the main body 1 includes a top end 11, an intermediate portion 12 and a The bottom end 13 is connected to the top end 11 and the bottom end 1 2, and the intermediate portion 1 2 includes a first surface! 2 1 and a second surface 122 'the first surface 121 and the second surface 122 are opposite sides, and the bottom end 13 includes a third surface 131, wherein the third surface 13 is connected to the first surface, and the particles 14 are arranged On the first surface 121, the second surface 122, and the third surface 1 31. The sampling tool of the embodiment 1 is mainly made of a substance which does not dissolve pollutants, for example, the Teflon itself has a stable property 'will not easily change chemically with the contaminant, therefore, the sampling tool is usually made of iron fluoride. In addition to the process of the dragon, the material must be manageable. It can bend the sampling tool. As shown in Figure 2b, the Teflon itself does not absorb when scraping 2 2 Strong, so the plurality of particles 14 on the sampling tool cause a capillary phenomenon, so that the liquid crystal 22 is easily attached to the particles 14. Although not shown in the drawings, the sampling tool may further include a handle, at the top end n of the body 100. 6 again

Page 9 1308233 Correction x~ life 9211551 fi_year 5, invention description, there may be a variation, so that the sampling tool 10 has a rough surface dye i & grain and rough surface can make it capillary phenomenon, so that At the beginning, it is easy to adsorb on the sampling tool. Please refer to FIG. 1 for a flow chart of a method for detecting contamination of a liquid crystal cell panel of the present invention. S301), i and Fig. 4, firstly, provide - liquid crystal cell panel 200 (small accuracy, 'face can not be affected by the edge 201 of the panel 200, the sampling contamination is from the complex area to the cell panel 2 0 0 separate sampling, use a sampling tool 10 7 , different parts of the surface to obtain a plurality of liquid crystal samples (S302), take the sample to obtain the sample, use the solvent (usually using acetone) to the plural two by the sampling tool 1 〇 The upper portion is washed down (S 3 0 3 repeats the above step λ ” S303 until the liquid crystal sample of each block is obtained (S304), and then the composition and concentration (S3〇5) of the plurality of liquid crystal samples are analyzed, and each is obtained. >5 stain component and concentration (83〇6) of the block to determine whether the liquid crystal cell panel 200 is contaminated (S3〇7). - Steps S302 to S304 of the month of the month further include the step of partition sampling As shown in FIG. 4, the liquid crystal cell panel 2 is divided into a plurality of blocks my, TFT-2, TFT-3, TFT-4, TFT_5, tft_6, tft_7, tft_8#, and TFT 9 in the parent block. Take a liquid crystal sample inside, and the multiple blocks are arranged in an array of 3x3, in other words, the liquid crystal cell panel 2 is divided In the nine blocks, each block has a fixed area 'each cell is 2 〇1 and about 1 cm away from the edge of the glass. In each block, the above-mentioned sampling tool 1 is used to take out the liquid crystal to be measured. Therefore, the edge of the panel will not be touched. The following describes the analysis and calculation method of the concentration of the liquid crystal pollutants, and refer to steps 33〇5 to 83〇9 of Fig. 3 to analyze the liquid crystal samples of each block.

Page 10 1308233 Case No. 92115516 Revision 、 V. Invention Description (8) ^ Among the knives and the undulations, the present invention utilizes the quantitative calculation of the concentration of the pollutants, and the liquid crystal solution collected by the sample tool 10 is collected and defined in The volume of the liquid crystal sample per area = 2 is v, the concentration of the liquid crystal sample is measured, and the volume of the liquid crystal of each block is calculated. For example, when the surface is nine blocks, as shown in Fig. 5 5 is a schematic view showing the size of the liquid block (4) 1 of the present invention, and the liquid crystal V每 of each block is (L * W * H/2) / 9 where L = the length of the liquid crystal block; W = liquid crystal The width of the block; H/2 = the height of the liquid crystal block (η); [/2; lightly by chemical analysis of the concentration of each pollutant or component in the liquid crystal sample (S3 0 5), the test of each liquid crystal sample The concentration (Cq) is reduced by the following formula: C = Cfl*(V/VQ), and the true concentration c of the contaminant is reduced (step S306). After step S306, it is determined whether the concentration is higher than the standard value (S3〇7), and the standard value is usually between 200_3〇〇ppb. When the component Na+ is greater than the standard value, the liquid crystal panel is judged as Contaminated (S 3 〇8) ' As shown in Figure 6, an experimental data is displayed. The concentrations of the blocks TFT-1 and TFT-2 near the edge of the panel 2〇1 are 559ppb and 335ppb, respectively, which are significantly higher than the standard value. The upper limit of 3 0 ppb 'so the panel can be determined to be contaminated by the measuring method of the present invention 'if the concentration C of each block is less than the standard value, that is, the liquid crystal cell panel passes the test (S309). The liquid crystal cell panel pollution detection method as described above can be divided into sections. Page 11 1 1308233 _ Case No. 92115516_Yearly 曰 Revision _ V. Invention Description (9) Liquid crystal and measuring the concentration of pollutants in liquid crystal, more precise Quantitative analysis of the concentration of contaminants. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

Page 12 1308233 _ Case No. 92115516_ Year Month 曰 Correction _ Brief Description of the Drawing FIG. 1 is a front view of the liquid crystal cell panel pollution detecting sampling tool of the present invention; FIG. 2a is a side view of the liquid crystal cell panel pollution detecting sampling tool of the present invention 2b is a side view of the bending state of the liquid crystal cell panel pollution detecting sampling tool of the present invention; FIG. 3 is a flow chart of the method for detecting contamination of the liquid crystal cell panel of the present invention; FIG. 4 is a liquid crystal cell panel of the present invention; Schematic diagram of the partition;

Fig. 5 is a schematic view showing the size of one of the blocks TFT-1 of the liquid crystal cell panel of the present invention; and Fig. 6 is a view showing the concentration of each block of the liquid crystal cell panel of the present invention. Symbol Description

10- Sampling tool; 1 Bu top; 12~ middle part; 13~ bottom end; 14~ pellet; 22~ liquid crystal; 100~ body; 121~ first surface 122~ second surface 131 ~ third surface

Page 13 1308233 _ Case No. 92115516_年月日日_Hi_ Schematic description 2 0 0 ~ liquid crystal cell panel; 2 0 1~ edge; TFT-1 'TFT-2 'TFT-3, TFT-4 'TFT- 5 'TFT-6, TFT-7, TFT-8 and TFT-9~blocks; L~length; W~width; Η~height.

Page 14

Claims (1)

Φ: Case No. 92115516 Amendment VI. Patent Application Range 1. A method for detecting contamination of a liquid crystal cell panel, comprising the steps of: (a) providing a liquid crystal cell panel; (b) dividing the liquid crystal cell panel into a plurality of blocks, (c) Acquiring a plurality of liquid crystal samples from different portions of the surface of the blocks by using a sampling tool, wherein the sampling tool has a first surface and a second surface, the first and second surfaces each having a plurality of particles, such that the liquid crystal Easily adsorbed on the first and second surfaces; (d) using a solvent to flush the liquid crystal samples from the sampling tool; (e) analyzing the pollutant components of the liquid crystal samples and determining the test concentration thereof; And (f) determining the true concentration of the components based on the test concentration, and determining whether the liquid crystal cell panel is contaminated by whether the true concentration exceeds a standard value. 2. The method for detecting contamination of a liquid crystal cell panel according to claim 1, further comprising the step of dividing the liquid crystal cell panel into a plurality of blocks, wherein the step (c) is to take a liquid crystal in each block. sample. 3. The method for detecting a contamination of a liquid crystal cell panel according to claim 2, wherein the liquid crystal sample has a volume of V ′ and the liquid crystal volume of each of the blocks is V. The test concentration is C〇, and the true concentration is C ′ then C = C〇 X (v/v0). 4. The method for detecting contamination of a liquid crystal cell panel according to claim 1, wherein the liquid crystal cell panel is divided into nine blocks. 5. The method for detecting contamination of a liquid crystal cell panel according to claim 1, wherein the blocks are arranged in an array. Page 15 1308233 Case No. 92115516 一卞 _魅-- VI. Patent Application Range 6. The method for detecting contamination of liquid crystal cell panels according to item 5 of the patent application scope, wherein the array is 3x3. 7. The method for detecting a contamination of a liquid crystal cell panel according to claim 1, wherein the solvent is acetone. 8. The method for detecting a pollution of a liquid crystal cell panel according to claim 1, wherein the contaminant is sodium ion. 9. The method for detecting contamination of a liquid crystal cell panel according to claim 1, wherein the standard value is 2 〇〇 to 300 PPM. I 0. The method for detecting contamination of a liquid crystal cell panel according to claim 1, wherein the sampling tool is made of Teflon. II. A sampling tool for contamination detection of a liquid crystal cell panel, comprising: a body (100) comprising a top end (11), an intermediate portion (12) and a bottom end (13), the intermediate portion (1 2 ) being connected The top end (11) and the bottom end (13), the intermediate portion (12) includes a first surface (121) and a second surface (122), the first surface (121) and the second surface (122) is the opposite side, and the bottom end (13) includes a third surface (131), wherein the third surface (131) is coupled to the first surface (121), and the body (100) is wrapable Made of a material; and a plurality of particles (14) disposed on the first surface (121), the second surface (122), and the third surface (131), wherein the particles (14) have adsorption It can adsorb the liquid crystal of a liquid crystal cell panel. 12. A sampling tool for contamination detection of a liquid crystal cell panel according to claim ii, wherein the sampling tool is made of Teflon / 1 3. As described in the scope of claim Liquid crystal cell panel pollution Page 16 1308233 Case No. 92115516 Page 17