TWI305848B - Method for making a bright spot pixel vanished and liquid crystal module - Google Patents

Description

1305848

1. The bright pixel of the invention is the darkening method of the pixel method and the darkening technology. The liquid crystal module is made of a liquid crystal module. First, [previous technology] increased. Because::曰=Because the number of pixels increases and the quality is high, it is difficult to manufacture. The probability of repairing the system is also increased.

Black: When no voltage is applied to the pixel electrode, the pixel should exhibit a defect that is all true. The pixel with these defects is called: prime. Highlight pixels are the eyes of human beings, _ eyes. Fi: After the weeping is the dark point of the pixel (or called the dot). In the case of darkness, it is difficult to distinguish the defects of the I. Regarding the highlight image, day, and the high SXGA (Supei* Extended Graphl CS Array) and UXGA (Ultra Extended Giraphics Array)

The refined product is irradiated with a laser by the surface of the liquid crystal module. Since the alignment of the liquid crystal is caused by the laser irradiation, the light of the backlight does not pass through the liquid crystal panel. That is, the laser light is irradiated so that the bright spot pixel becomes a dark spot pixel. However, when the dark spot method of SXGA and UXGA products is applied to XGA (Extended) whose pixel area is more than twice that of SXGA and UXGA products.

Graphics Array, when expanding graphics arrays, is difficult to obtain stability conditions based on the purpose of bright spot correction. This is because the pixel area is large, and the number of liquid crystals that need to be chaotically aligned is increased. The laser dose of the irradiation needs to be increased, but if it is excessive

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V. INSTRUCTION OF THE INVENTION (2) When the laser light is irradiated, the liquid crystal is deteriorated. In addition to the need to maintain dark spots, in addition to the degree that the human eye cannot discern, it is necessary to obtain a stability result with little change in reliability in the reliability test. A method of darkening a bright spot pixel by using two times of laser light irradiation is disclosed in Patent Document 1 (Japanese Patent No. 32189664). The first laser irradiation is used to generate bubbles in the liquid crystal. The second laser irradiation was carried out in the presence of air bubbles to deteriorate the alignment film. After a period of time, the bubble disappears and the liquid crystal returns to the position where it was before the bubble. At this time, the liquid crystal is vertically aligned with the substrate, and light does not pass through, and becomes a dark spot. However, according to the illustration in Patent Document 1, the laser light is irradiated from the back surface of the liquid crystal cell. Therefore, after the components such as the backlight are connected to the liquid crystal cell to complete the assembly of the liquid crystal module, it is necessary to remove the components such as the backlight if the bright pixels are to be darkened. Remove the installed parts. In addition to the trouble, there is also the possibility of damage to the LCD module. SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION The present invention provides a dark-spot method for providing bright-point pixels that do not require removal of components such as a backlight from a liquid crystal module, and a liquid crystal module that provides dark-dotted pixels. The method of the present invention relates to a method for darkening a bright pixel in a liquid crystal module, wherein the liquid crystal module comprises: a color filter substrate; an array substrate, and the color filter The substrates are opposite to each other; the electrodes are respectively disposed on the color filter substrate and the array substrate; the alignment films are respectively disposed on

1305848 5, the invention description (3) the color light-emitting substrate and the array substrate; liquid crystal, sealed between the color filter substrate and the array substrate; the bright point pixel dark point method comprises the following steps: a step of the electrode; the step of scanning the first trace by the first laser on the pixel of the shell; and the step of scanning the second trace different from the first trace by the second laser by the second laser . Two times of laser irradiation was performed under the condition that the driving voltage of the liquid crystal was applied to the electrodes. The first laser irradiation causes bubbles to be generated on the liquid crystal. The second laser irradiation confuses the alignment of the liquid crystal. Further, when a voltage is applied to the electrodes, the laser light is irradiated to increase the viscosity of the liquid crystal. Even if the generated bubbles are small, the liquid crystal becomes difficult to move. In the above bright pixel, the second track itself intersects at a plurality of points. At the intersection of the second laser strike, two laser shots can be performed to confuse the alignment of the liquid crystal. The first laser and the second laser are irradiated to the bright spot pixels from the side of the color filter substrate. Since the laser is illuminated from the side of the color filter substrate, even if a component such as a backlight is connected to the liquid crystal module, it is not necessary to disassemble it.

The first laser and the focus of the second laser are located outside the color filter substrate. When a hole is formed in the alignment film and the electrode of the color filter substrate and the array substrate by the laser, if the focus of the laser is located outside the color filter substrate, the holes of the color filter and the alignment film of the optical substrate become smaller, and the array is small. The pores of the alignment film of the substrate or the like become large. The color filter substrate has a small hole and is less conspicuous. Moreover, the larger the aperture of the array substrate can confuse the alignment of the liquid crystal.

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The power density of the ith laser is made smaller than the power density of the second laser. Therefore, the bubble can be generated in the liquid crystal by one laser without deteriorating the liquid crystal, and the alignment film can be removed by the second laser. The liquid crystal module according to the present invention comprises: a color-array substrate opposite to the color filter substrate; an electrode 'on the color filter substrate and the array substrate; and an alignment film respectively disposed on the a color light-emitting substrate and an S-ray array substrate; a liquid crystal sealed between the color filter substrate and the array substrate; wherein the image is disposed on the alignment film of the color filter substrate and the alignment film of the array substrate Holes are provided, each of which has a different size. Since the alignment film of the bright pixel has a hole, the alignment of the liquid crystal is disturbed, and the light becomes impermeable, and the bright pixel becomes a dark pixel. The pores of the alignment film of the color filter substrate are smaller than the pores of the alignment film of the array substrate. By reducing the pores of the alignment film of the color filter substrate, the presence of voids is not easily perceived from the surface of the liquid crystal module. 4. [Embodiment] The dark spot method of the bright spot pixel and the dark spotted liquid crystal module of the present invention will be described with reference to the drawings. As shown in FIG. 2, the liquid crystal module 4 includes: a color filter substrate 3 2; the array substrate 34 ′ is opposite to the color filter substrate 32; and the liquid crystal 36 is sealed on the color filter substrate 32 and the array substrate 34 The liquid crystal layer 38 is formed therebetween; the electrodes 22 and 28 are respectively disposed on the glass substrates 2, 26; and the alignment films 16, 30 are located on the electrodes 22, 28, respectively. Further, the color filter substrate 32 has a filter layer 21 and a polarizing plate 23, and the array substrate 34 has wiring arranged in rows and columns and wiring.

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The thin section at the intersection is divided into the vertical and horizontal directions. Source and drive circuit The vertical and horizontal movements of the bright pixels are used to refer to Fig. 4Q' to become a bright spot on the platform after the pixel 10. A transistor (TFT) and a polarizing plate 23. The liquid crystal module 4 is surrounded by a plurality of pixels. The liquid crystal module 40 is provided with a backlight or the like, and thus can be used as a display device. A device for illuminating a pixel of a pixel, comprising: a device for illuminating the illuminating device; a computer for controlling the laser; and a table for mounting the liquid crystal module; and a mechanism for applying a voltage to the pixel of the bright spot.

2 ′ illustrates a method of darkening the light of the backlight 4 through the pixels of the pixel of the liquid crystal module. The inspection reveals that the liquid crystal module 40 is placed on the electrode 22 for the dark spot, and the voltage (liquid crystal driving voltage) is applied to the electrode 22 of the bright spot pixel 10, and the liquid crystal 36 is driven. The laser irradiation is performed under the condition of applying a voltage. For example, the voltage is between 3. 〇 V and 39 ν. When the laser irradiation is performed in a state where the voltage is applied, the viscosity of the liquid crystal 3 6 is more likely to maintain the disordered state of the alignment of the liquid crystal. The reason why the viscosity of the liquid crystal 3 6 is improved will be described below. When the state of the electric mushroom j is not applied, the liquid crystal 36 is arranged along the alignment direction on the alignment films 16, 30. Generally, the alignment direction of the opposing alignment films 丨6, 3〇 is relatively reversed by 9 〇. The liquid crystal 3 6 shown in =2 is twisted. At this time, the liquid crystal 36 becomes easier to move in the lateral direction. When a voltage higher than the liquid crystal driving voltage is applied, the liquid crystal 36 is pulled by the electrodes 22, 28 and stands vertically with respect to the substrates 20, 26. Since the liquid crystal 36 becomes difficult to move, the viscosity of the liquid crystal 36 is improved. Then, laser irradiation is performed to align the alignment of the liquid crystals 3 6 of the bright spot pixels 10. The laser system YLF laser used has a wavelength of i 〇 53 nm. Figure 1

Page 11 1305848 V. INSTRUCTIONS (6) (a) show two laser exposures. The first laser irradiation is to scan a laser to generate bubbles. The second laser exposure, along the line of the trace, such as the trajectories 13 and 14 scan the laser. The trajectory of the second laser irradiation is the horizontal trajectory 13 and the vertical trajectory 14 in Fig. 1(a). However, the trajectories 13, 14 of the second laser irradiation may also be reversed. In the first and second laser irradiations, conditions such as the power of the laser can be changed. As shown in Table 1, examples using different conditions are used. Table 1 Number of irradiations ^ Power beam size p Power density β First time 10-80 10x10-25x80 30~1〇〇mJ/mm3^ Second time β 3 ~20 jijf 2x2—5x5 β πΐ4= 50~200 mJ The pulse frequency of /mm2, for example three lasers, is 2 to 100 pps (Pulse Per Second). The transmission speed of the laser spot is ίο to 15?:/Se 2: and the transmission speed of the laser spot is on the surface of the bright pixel (4), the moving speed of each spot, in other words, the pulse frequency is 2〇, = the speed of the drawing At the most, the alignment can be confused. The lightning spot transmission speed is 40 ym/sec.] = from 5 to "... The second scanning interval in Figure 1 (a). 13, 14 are juxtaposed in parallel, with the interval as the laser image, and the liquid helium layer is thundered: the household illumination 'as shown in Fig. 3, the bubble 48 is generated due to the heat of the laser 44. Irradiation of the second laser 46, as described on page 12, 1305848. V. Invention (7) As shown in Fig. 4, the alignment films 16, 30 and the electrodes 22, 28 are removed. However, the filter layer 2 1 is not removed. The portion where the alignment film 16 or 30 is removed is the portion where the bubble does not have the liquid crystal 36 when the first laser irradiation is performed. In other words, as shown in Fig. 1(b), at the intersection of the longitudinal and transverse tracks 13, 14 of the second laser, holes 18 and 19 are formed. In the second laser irradiation, the traces 13 and 14 are scanned at regular intervals, and the alignment films 16 and 30 and the electrodes 22 are removed at regular intervals. 28 ° After the second laser irradiation The bubbles 48 generated on the liquid crystal layer 38 are gradually absorbed by the liquid crystals 36 to become small, for example, the bubbles disappear after about 5 minutes. As shown in Fig. 5, when the bubble 48 is reduced, the liquid crystal 36 touches the positions of the holes 18 and 19 of the unaligned film 16 and 30, and the alignment is disordered. Since the traces 13 and 14 of the second laser irradiation have a plurality of intersections, the alignment of the liquid crystal 36 is disordered at the plural position. Further, the liquid crystals 3 at the remaining portions of the alignment films 16 and 30 are affected by the disordered liquid crystals 36, and the alignment is also disordered. Thus, as shown in Fig. 5, the light 42 of the backlight becomes inaccessible, and the pixels of the bright spot are then darkened. As shown in Table 1, the laser power special conditions for the first and second laser irradiations can be changed. The purpose of the first laser irradiation is to vaporize the liquid crystal 36 to generate the bubble 48. If the power density of the laser 44 is too high, the liquid crystal 36 will deteriorate, and the ionic substance will precipitate, causing the liquid crystal module 40 to produce white unevenness. Therefore, when the liquid crystal 36 is present, when a laser 4 4 is irradiated, a certain power density or more cannot be used. At this time, the first laser irradiation is performed at a low power density, and the laser beam 44 is scanned with a slit like the trace 12 of Fig. 1(a). When the irradiation area of the laser beam 44 is increased, the heat of the entire laser beam 44 that illuminates the bright spot pixel 10 is increased.

Page 13 1305848 V. Description of invention (8) The quantity becomes larger. In the second laser irradiation, since the liquid crystal 36 generates bubbles 48 at the time of the first laser irradiation, it is necessary to increase the power density of the laser 46. In order to produce a narrow space (for example, 8 // m or less) at the alignment film 18, 30 with holes and no holes, in addition to increasing the power density of the laser 46, the beam size is about For a degree of 3 X 3 # m, scan a small track 1 4 . In the second laser irradiation, holes 18 and 19 having a high density and an equal interval are formed on the alignment films 16 and 30. At the time of the first laser irradiation, the number of pulses at one position is irradiated once, or a plurality of pulses are irradiated in a short time. However, in order to generate the bubble 48 at a time, it is preferable that the number of pulses is one irradiation. The second laser irradiation is performed while continuously irradiating, for example, at a value of 40 /zm/sec or 20 pps. As described above, the alignment films 16, 30 at the intersection of the traces 1 3 and 14 of the second laser irradiation can be removed. Although it is related to the performance of the computer that controls the lasers 44 and 46, in the case of general laser irradiation of 4 4, 4 6 , the laser irradiation method of scanning the trajectory of the line is 'laser than the coordinate scanning of the specified plurality of coordinates. The irradiation speed is also fast. For the first laser irradiation, the generated bubble 4 is stable for about 1 to 2 minutes. In order to complete the irradiation of the second laser in a short period of time, the bright spot pixels 10 are line-scanned with lasers 44 and 46, which is more efficient than the irradiation position determined by the laser irradiation, and holes 18 and 19 can be generated. The laser irradiation is performed from the side of the color filter substrate. That is, when the irradiation is performed, it is not necessary to remove the components such as the backlight from the liquid crystal module 4, and as shown in Figs. 3 and 4, the focus A of the lasers 44 and 46 is in the color light.

1305848 V. Description of invention (9): Above the plate 3 2 . For example, the focus position is below the surface 20 of the color filter substrate 3 2 . Since the focus A of the lasers 44, 46 is located above the color filter substrate 32, the alignment film 16 of the color filter substrate 32 produces a small hole 18' of the liquid crystal module 4 on the alignment film 30 of the array substrate 34. Since the laser 'can produce a hole 18 of the inconspicuous alignment film 16. And, the first! The secondary field 44 is located at the same position as the focus A of the second laser 46. Further, in the present invention, the alignment of the liquid crystals 36 can be disturbed at a plurality of positions of the bright pixels 1 〇, so that the liquid crystal of the entire bright pixels can be disturbed. When a voltage is applied while the laser beams 44 and 46 are being irradiated, the degree of liquid crystal 36 rises, and it becomes easy to maintain the alignment disorder state of the liquid crystal. Since the two laser irradiations are irradiated from above the color filter substrate 32, it is not necessary to detach the components such as the back source from the liquid crystal module 40. Hereinabove, the embodiment of the present invention has been described, but the present invention is not limited to the above embodiment. For example, the second laser 46 can be separately swept twice, and the alignment portion of the chaotic liquid crystal 3 6 can be irradiated twice in succession. In this case, the conditions such as the laser power at the time of two laser irradiations will be different. As long as the first laser irradiation can generate bubbles, the second laser irradiation can remove the alignment films 16 and 30, and the lasers 44 and 46 are not irradiated by line sweeping, and the lasers 44 and 46 are irradiated by the coordinate designation. can. The types of lasers 44 and 46 are not limited to YLF lasers, and other types of lasers are also available. The type of laser in the first and second laser irradiations may be different. 开 Opening holes in the alignment films 16 and 3 at predetermined intervals, so that the liquid crystal may be

1305848 V. INSTRUCTIONS (ίο) Under the condition of chaotic disorder, the path of the 2 scans may also be a path other than that shown in FIG. In the above embodiment, the focus of the lasers 44, 46 is located above the color filter substrate 32, but not in the liquid crystal layer 38, but the alignment film 16 is located at a position close to the color filter substrate 32 of the liquid crystal layer 38. A hole 19 formed in the hole 18 formed thereon. Color filtering is not conspicuous. Others, those skilled in the art can improve and correct the effect of the invention in accordance with the present invention. According to the present invention, since the image is irradiated by the laser, the sound recording of the liquid crystal is disturbed. Since the laser light is emitted, the backlight of the liquid crystal module can make the bright pixels dark. In this case, the color filter substrate 32' is smaller than the alignment film 30 of the array substrate 34. The hole 18 of the alignment film 16 or the like of the substrate 3 2 can be changed and changed without departing from the scope of the present invention. When the voltage is applied to the electrode of the element, it is easy to maintain the laser due to the upper 弁 a 1 : while the color filter substrate side of the module is maintained connected,

Page 16 1305848 Brief Description of the Drawings V. [Simple Description of the Drawings] Fig. 1 is a diagram showing the darkening method of the present invention, wherein (a) indicates the trajectory of the laser (b) indicates the arrangement of the holes in the alignment film. . Fig. 2 shows a cross-sectional view of a liquid crystal core group' as a light transmission pattern of a backlight. Fig. 3 is a view showing a state in which the first laser irradiation is performed on the liquid crystal module. Fig. 4 is a view showing a state in which the second laser irradiation is performed on the liquid crystal module. Figure 5 shows a cross-sectional view of a dark-spotted liquid crystal module, which is a pattern in which the light of the backlight is impermeable. Component symbol description: 1 0 ~ bright pixel 1 2 ~ 1st laser irradiation trace 1 3 ~ 2nd laser irradiation track 1 4 ~ 2nd laser irradiation trace 1 6 ~ alignment film 3 0~ alignment film 1 8~ hole 1 9~ hole 2 0~glass substrate 2 6~glass substrate 21~color filter layer

Page 17 1305848 Schematic description 22 ~ electrode 2 8 ~ electrode 2 3 ~ polarizing plate 3 6 ~ liquid crystal 3 8 ~ liquid crystal layer 40 ~ liquid crystal module 4 2 ~ light 44 ~ 1st laser 46 ~ 2nd laser 48~ bubble

Claims (1)

1305848 Case No. 92128151 Correction of the steps: Shanliu, the scope of application for patents... 1. A method for darkening pixels of bright pixels in a liquid crystal module, wherein the liquid crystal module comprises: a color filter substrate; an array substrate, and The color filter substrate is opposite to each other; the electrodes are respectively disposed on the color filter, the optical substrate and the array substrate; the directional alignment film is disposed on the color light-emitting substrate and the electrode of the array substrate respectively; the liquid crystal is sealed on the a color filter substrate and the array substrate; the method comprising the steps of: applying a voltage to the electrode; scanning the first laser on the bright pixel to generate a first bubble region; and the first bubble a region, in the second laser, scanning in the first direction and the second direction, the first direction having a crossing point with the second direction, the alignment film forming a hole at the intersection, the alignment film on the color filter substrate The hole is smaller than the hole of the alignment film on the array substrate; wherein the first laser and the second laser illuminate the bright pixel from the side of the color filter substrate The first laser and the focus of the second laser are located outside the color filter substrate. 2. The method of dark spotting bright pixels in a liquid crystal module according to claim 1, wherein the power density of the first laser is smaller than the power density of the second laser. The three liquid crystal modules include: - a color filter substrate; - an array substrate opposite to the color filter substrate; - a first electrode disposed on the color filter substrate Page 19 1305848 _ Case No. 92128151_ Year Month 曰 Correction _ 6. Patent application range A second electrode is disposed on the array substrate; a first alignment film is disposed on the first portion of the first electrode a second alignment film disposed on the second portion of the second electrode; a liquid crystal sealed between the color filter substrate and the array substrate; wherein, when one edge of the first alignment film is vertically projected When the second alignment film is on the edge, the edge of the first alignment film does not overlap with one edge of the second alignment film; holes are respectively disposed on the first alignment film and the second alignment film, and the holes are respectively The size is different. 4. The liquid crystal module of claim 3, wherein the first alignment film forms a plurality of holes in the remaining portion of the first portion of the first electrode. 5. The liquid crystal mold according to item 3 of the patent application, wherein the second alignment film forms a plurality of holes in the remaining portion of the second portion of the second electrode. 6. The liquid crystal module of claim 3, wherein the first alignment film forms a plurality of holes in the remaining portion of the first portion of the first electrode, and the second alignment film is in the first The remaining portion of the second portion of the two electrodes forms a plurality of holes. 7. The liquid crystal module according to any one of claims 4 to 6, wherein the intervals of the holes are substantially equal. 8. The liquid crystal module according to any one of claims 4 to 6, wherein the holes have different sizes. 9. The liquid crystal module according to any one of claims 4 to 6, wherein the holes are smaller in size than a single element. Page 20 1305848 _ Case No. 92128151 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The remaining portion of the portion forms a hole, and the projection of the hole on the second alignment film is smaller than the hole formed by the second alignment film on the remaining portion of the second portion of the second electrode. The liquid crystal module according to any one of claims 4 to 6, wherein the holes have a size ranging from 4 u m 2 to 2 5 u m 2 . The liquid crystal module of claim 3, wherein the remaining portion of the first portion of the first electrode forms a hole and the second portion of the second electrode The holes formed by the remaining portions correspond to each other. Page 21