TW200918987A - Method for converting a bright dot to a dark dot in a LCD panel - Google Patents

Abstract

A method is provided for converting a bright dot to a dark dot in a LCD panel which includes a color filter, an alignment film and a liquid crystal layer. The color filter includes a subpixel corresponding to a bright dot to be converted. The alignment film has an area to be destroyed corresponding to the subpixel of the color filter. The liquid crystal layer has a portion to be vapored located in a zone corresponding to the area of the alignment film. The method includes the steps of applying a first beam of laser rays to the zone to vapor the portion of the liquid crystal layer; applying a second beam of laser rays to the zone to clear out all residues of the portion of the liquid crystal layer; and applying a third beam of laser rays to the area to destroy grooves defined in the alignment film.

Description

200918987 IX. Description of the Invention: Technical Field of the Invention The present invention relates to the technical field of liquid crystal panels, and more particularly to the technical aspects of bright spot repair of liquid crystal panels. [Prior Art] Taiwan Patent No. 574,527 discloses a method and apparatus for repairing bright spots of a conventional liquid crystal panel for removing bright spots of a liquid crystal panel. The way to clear is to shoot the second laser beam for this bright spot. The first shot is used to evaporate the liquid crystal corresponding to the bright spot in one of the liquid crystal layers of the liquid crystal panel to generate a bubble. The second shot was used to break the area of the alignment film (i.e., the alignment film) of the liquid crystal panel corresponding to the bright spot. Although it is expected that the size of the bubble can cover the secondary elements corresponding to the bright spots in the color filter layer of the liquid crystal panel, in the second shot, the area corresponding to the secondary halogen in the oriented film is destroyed. To the extent that it is acceptable. However, since the bubbles actually generated are often unable to achieve the aforementioned expectation, liquid crystals which are not evaporated remain in the region corresponding to the sub-pixels in the liquid crystal layer. These residual liquid crystals affect the effect of the second shot, that is, the area of the oriented film corresponding to the secondary halogen is not broken to an acceptable level. This will cause small highlights to be easily seen on the LCD panel. In other words, the bright spots on the LCD panel are not cleared. Therefore, it can be seen that the repairing effect of the technology disclosed in the patent case still needs to be strengthened. 6 200918987 SUMMARY OF THE INVENTION The present invention provides a method for improving the clearing effect of a bright spot, which is used to make up for the shortcomings of the conventional liquid crystal panel bright spot repairing method which is not easy to completely repair the bright spot. More specifically, the method for removing a bright spot on a liquid crystal panel according to the present invention, wherein one of the color filter layers of the liquid crystal panel has a primary pixel corresponding to a bright spot, and the liquid crystal panel is closer to the liquid crystal panel. One of the color filter layers has a to-be-destroyed area corresponding to the secondary element, and one of the liquid crystal layers has a region to be destroyed corresponding to the area to be evaporated. The method includes causing a laser device to emit a first laser beam to fire liquid crystal in a region to be evaporated of the liquid crystal layer, the first laser beam is sufficient to evaporate the liquid crystal; and causing the laser device to emit a second laser Shooting a light beam, shooting residual liquid crystal in the liquid crystal layer to be evaporated, the second laser beam is sufficient to evaporate the residual liquid crystal; and causing the laser device to emit a third laser beam to shoot the alignment film to be destroyed The third laser beam is sufficient to break the plurality of trenches of the alignment film in the region to be destroyed. In the present invention, when the surface of the liquid crystal panel to be repaired has been processed into a non-glossy surface, a transparent film is attached to the liquid crystal panel before the laser device emits the first laser beam. Facing the surface of the laser device, the first laser beam can be incident into the panel. In any event, the present invention emphasizes that the method for clearing one of the bright spots on a liquid crystal panel can effectively improve the clearing effect of the bright spots. Other inventive aspects and more detailed technical and functional descriptions of the present invention are disclosed in the following description. The first embodiment shows that the liquid crystal panel 1 of the present invention comprises a TFT substrate 10, a color filter, an optical substrate 11, and a liquid crystal layer 12'. The liquid crystal layer 10 is sealed on the TFT substrate. 10 is interposed between the color filter substrate 11. The TFT substrate 10 includes an alignment film 100, a TF7 array 101, a glass substrate 102, a polarizing plate 103, and a backlight module 104 in this order from the liquid crystal layer 12. The color filter substrate 11 includes an alignment film 110, an ITO electrode layer 111, a color filter layer 112, a glass substrate 113, and a polarizing plate 114 in this order from the liquid crystal layer 12. The color filter layer 112 of the color filter substrate 11 forms a plurality of halogens 115, and each of the halogens includes a secondary pigment 116 of three colors of R, G, and B. The grooves having orthogonal directions on the opposite sides of the two alignment films 100, 110 allow the liquid crystal molecules of the liquid crystal layer 12 to be aligned. In the absence of an applied voltage, the liquid crystal molecules in the liquid crystal layer 12 are twisted at a ninety degree. At this time, the light of the backlight module 104 is changed into a linear polarized light by the polarizing plate 103 of the TFT substrate 10, and the linear polarized light is polarized. The liquid crystal molecules along the liquid crystal layer 12 are twisted and then projected by the polarizing plate 114 of the color filter substrate 11. When the voltage of the liquid crystal molecules of the liquid crystal layer 12 is perpendicular to the two polarizing plates 103 and 114, the light of the backlight module 104 cannot pass through the color filter substrate η. In general, the liquid crystal panel 1 often produces bright spots due to various factors such as intrusion of metal foreign matter or foreign matter during the manufacturing process. The color filter layer 112 of the liquid crystal panel 1 has a primary pixel 116 corresponding to a bright spot. The alignment film 110 of the color filter and optical substrate 11 has a to-be-destroyed area 117 corresponding to the secondary pixel 116. One of the liquid crystal panels 1 The liquid crystal layer 12 has a region to be evaporated 12 〇 to 200918987 which should be destroyed. The fourth picture of Le Yiyi shows the flow of the method of the bright spot on the board. The second figure indicates the schematic diagram of the method including the steps of Y. (a) generating a bubble: causing a laser beam to be emitted in a region to be evaporated 12 of a laser liquid crystal layer 12, firing the liquid crystal to emit the liquid crystal, wherein the liquid crystal The liquid crystal evaporates to generate bubbles 2, such as one in the second evaporation zone 120. (b) Removal of residual liquid crystal: After the evaporation zone 120 is likely to remain in the right "* (a) step due to the recovery of liquid crystals, this. The evaporating and/or very fast launching device emits a laser beam, and the firing surface is required to utilize the residual liquid crystal of the thunder, wherein the laser beam in the evaporation zone 120 allows the residual of the 12G towel to be evaporated. ^_LCD's step is optional; for example, 'there is no residual liquid crystal, then it does not need to be executed: (4) after the step, the evaporation zone (C) destroys the film: the laser device is launched a laser beam, the to-be-destroyed region 117 of the alignment film 110 is fired, wherein the laser beam is sufficient to break the plurality of trenches of the alignment film 110 in the to-be-destroyed region 117, and the rill structure of the damage-damping region 117 is After the destruction, the alignment state of the liquid crystal can be affected, and the light can not pass, so that the original bright spot becomes a continuous dark state, and the repairing purpose is achieved, as shown in the fourth figure. (d) Resting: The repaired liquid crystal panel is allowed to stand for a while, so that the liquid crystal of the liquid crystal layer 12 is cooled and then returned to the original position, and then the repairing condition of the bright spot is detected. 200918987 The fifth and sixth figures show that the pixel 116 is divided into a first block 116a and a second block H6b. The to-be-destroyed area 117 of the alignment film 11 has a first to-be-destroyed area 117a corresponding to the first block u6a and a second to-be-destroyed area 117b corresponding to the second block i16b. The evaporation zone 120 of the liquid crystal layer 12 has a first to-be-evaporated zone i2a corresponding to the first to-be-destroyed zone i17a, and a first to-be-evaporated zone 12〇b corresponding to the second to-be-destroyed zone ιιπ. The seventh figure shows a detailed flowchart of the above-mentioned bright spot repairing method when the secondary pixel 116 is divided into a first block 116 & and a second block 116b, wherein: (a) the step includes: U1) adjusting the mine The projecting device causes a first laser beam 2〇 to be elongated and slightly shorter than the long side of the first block 116a and parallel to the long side of the first block 116a, as shown in the eighth figure. Causing the laser device to shoot the liquid crystal in the first to be evaporated region 12Ga of the liquid crystal layer 12, the first laser beam 2 is sufficient to evaporate the first evaporation region 12Qa LCD, please refer to the third and sixth figures. U3) adjusting the laser device to form a second laser beam 21 elongated and slightly shorter than the long side of the second block U6b and parallel to the long side of the second block 116b, as shown in the eighth figure Show. (af) causing the laser device to shoot the second laser beam 21 into the liquid crystal in the second evaporation zone 120b of the liquid crystal layer 12, the first laser beam 21 being sufficient to evaporate the second evaporation zone 12Qb LCD, please cooperate with the sixth and eighth pictures. The step (b) includes: 200918987 (bl) s. The laser device completes a third laser beam 22 in a dot shape as shown in the ninth figure. (b2) causing the third laser beam 22 to shoot the residual liquid crystal in the first evaporation zone i2〇a of the liquid crystal layer 12, please refer to Fig. 6. (b3) The laser device is δ-circumferentially shaped to form a fourth laser beam μ as shown in the ninth figure. (b4) causing the laser device to shoot the fourth laser beam μ to the residual liquid crystal in the second to-be-evaporated region 12b of the liquid crystal layer, please refer to the sixth figure. The number of shots of the third laser beam 22 and the fourth laser beam 23 depends on the amount of residual liquid crystal in the first to-be-evaporated region 12a and the second to-be-evaporated region 120b, and the residual liquid crystal is more If the number of shots is large, the number of residual liquid crystals is small, and the number of shots is small. Of course, if the liquid to be evaporated in the first to-be-evaporated region 12 is not left, the steps (b1) and (b2) need not be performed, and the second portion is to be evaporated. The remaining liquid crystals in the region 120b do not need to be performed in the steps (b3) and (b4). The step (c) includes: (c1) adjusting the laser device to form a fifth laser beam 24 into an elongated shape, and having a length slightly shorter than a short side of the first block 116a, and the first The short sides of block 116a are parallel, as shown in the tenth figure. (smart) causing the laser device to intensify the fifth laser beam, sequentially sequentially shooting the first to-be-destroyed area u〇a and the second to-be-destroyed area 110b of the alignment film 11 from the upper direction to the destruction The alignment film 110 is located in the two regions of the 200918987 number of grooves, please refer to the sixth and eleventh drawings. The twelfth figure shows a block diagram of the entire 昼t 116 s. > The thirteenth figure shows a detailed flow chart of the above-mentioned defect repairing method when the halogen element 116 is in a block shape, wherein: (a) the step includes: (al) 5 weeks of the entire laser The apparatus causes a first laser beam 20 to be elongated and slightly shorter than the long side of the secondary pixel 116 and parallel to the long side of the secondary element, as shown in FIG. (a2), the laser device shoots the first laser beam 2 into the liquid crystal in the evaporation region 12 of the liquid crystal layer p, and the first laser beam 2 is sufficient to emit the to-be-fired region 120 The liquid crystal in the middle, as shown in the third figure. The step 5b (b) includes: the second laser beam 21 forms a point (M) to adjust the laser device to be in a shape as shown in Fig. 12. (b2) causing the laser device to shoot the residual liquid crystal in the evaporation zone 120 of the liquid layer 12 by the second laser stop 21. The step (c) includes: (cl) adjusting the laser device such that a third laser beam 22 is elongated and slightly shorter than the short side of the secondary pixel 116, and the secondary pixel 116 The short sides are parallel, as shown in Figure 14. - (c2) causing the laser device to continuously shoot the third laser beam 22 from the top to the bottom to the to-be-destroyed region 11 of the alignment film 110, and destroy the plural of the alignment film 110 in the to-be-destroyed region 110. The groove is shown in Figure 4 and Figure 10, 200918987. The above-mentioned bright spot repair methods are applied to the liquid crystal panel of the bright surface, 'However, in order to improve the situation that the glossy liquid crystal panel is easy to produce reflection, it is common to process the surface of the liquid crystal panel into a non-glossy surface, and the non-glossy surface When the liquid crystal panel 3 is repaired by the above-mentioned bright spots, the surface thereof affects the focusing effect of the laser beam. Therefore, when the method of the present invention is applied to the non-light-surface liquid crystal panel 3, before the first laser beam 20 is fired, a transparent film 4 is first applied to the non-light-surface liquid crystal panel 3 facing the surface of the laser device. So that the non-glossy liquid crystal panel 3 forms a surface through which the laser beam can penetrate. The transparent film 4 includes a transparent flat film 40 and a transparent adhesive 41. The transparent adhesive 41 is formed on one surface of the transparent flat film 40 to be attached to the surface of the non-light surface liquid crystal panel 3. The five figures are shown. From the above description, it can be understood that the method for removing a bright spot on a liquid crystal panel of the present invention can effectively improve the clearing effect of the bright spot. In any case, anyone can obtain sufficient teaching from the description of the above examples and understand that the present invention does have industrial applicability. Further, the same technique as the present invention is not seen, so the present invention is novel. Further, the technique similar to the present invention has not been seen, so the present invention is progressing. Therefore, the present invention clearly meets the requirements of the invention patent and submits an application in accordance with the law. 13 200918987 [Simple description of the drawings] The first figure is a schematic structural view of a liquid crystal panel of the present invention. The second figure is a flow chart of the highlight of the liquid crystal panel of the present invention. The third figure is a schematic diagram of the action of the present invention to generate bubbles. The fourth figure is a schematic view of the action of the present invention to destroy the alignment film. The fifth figure is a top plan view in which the sub-pixels of the present invention are divided into two pieces. The sixth figure is a schematic view of the A-A section of the fifth figure. The seventh figure is a detailed flow chart of the bright spot repair when the secondary quinone of the present invention is divided into two pieces. The eighth figure is a schematic view showing the first laser beam adjusted to a narrow shape in the present invention. The ninth figure is a schematic plan view of the third and fourth laser beams in the present invention adjusted to a dot shape and in the presence of the residual liquid crystal. The tenth figure is a schematic plan view of the fifth laser beam of the present invention which is adjusted to be elongated and is located above the first block of the secondary element. The eleventh drawing is a plan view of the continuous shooting of the fifth laser beam of the present invention. The twelfth figure is a top view of the present invention. The top view is a full block. Detailed flow chart. Fig. 14 is a plan view showing the continuous shooting of the third laser beam of the present invention. Fig. 15 is a schematic cross-sectional view showing the transparent film of the present invention applied to the surface of a non-glossy liquid crystal panel. [Main component symbol description] 1 liquid crystal panel 10 TFT substrate 100 alignment film 101 TFT arrangement 102 glass substrate 103 polarizing plate 104 backlight module 11 color filter substrate 110 alignment film 111 ITO electrode layer 112 color filter layer 113 glass substrate 114 polarizing plate 115 昼116 times halogen 112a first block 116b second block 117 to be damaged area 117a first to-be-destroyed area 117b second to-be-destroyed area 12 liquid crystal layer 120 to be evaporated area 120a first to be evaporated area 120b second to be evaporated 20 first laser beam 21 second laser beam 22 third laser beam 15 200918987 23 fourth laser beam 3 non-glossy liquid crystal panel 40 transparent planar film 24 fifth laser beam 4 transparent film 41 transparent adhesive 16

Claims (1)

200918987 X. Patent application scope: 1. A method for removing a bright spot on a liquid crystal panel, wherein one color filter layer of the liquid crystal panel has a primary pixel corresponding to a bright spot, and the liquid crystal panel is closer to the color filter. One of the optical layers has a to-be-destroyed area corresponding to the secondary element, and one of the liquid crystal layers has a region to be evaporated corresponding to the area to be destroyed, the method comprising: causing a laser device to emit a first laser beam Shooting the liquid crystal in the evaporation zone of the liquid crystal layer, the first laser beam is sufficient to evaporate the liquid crystal; causing the laser device to emit a second laser beam to shoot residual liquid crystal in the evaporation region of the liquid crystal layer The second laser beam is sufficient to evaporate the residual liquid crystal; and the laser device emits a third laser beam to fire the alignment defect, the third laser beam is sufficient to destroy the alignment film a plurality of grooves in the area to be destroyed. 2. The method of claim 1, wherein the laser device is adjusted to emit the first laser beam before the first laser beam is emitted, and the length of the first laser beam is elongated and shorter than the time. The long side of the element is parallel to the long side of the pixel. The method of claim 2, comprising adjusting the laser device prior to transmitting/first laser beam such that the second beam 17 2009 18987 beam is spot shaped. 4. If the second mine body + umbrella* > method described in item 3 of the patent application scope is included in the preparation of a younger brother, a laser beam, the adjustment of the laser equipment fv , , , „ u 土 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The method described in the page includes: before the laser device emits the first laser beam, J is pasted with a transparent film on the surface of the liquid crystal panel facing the laser device, the transparent film including a transparent A flat film and a layer of transparent adhesive are formed on one side of the transparent planar film. 6. A method for removing a bright spot on a liquid crystal panel, wherein one of the color filter layers of the liquid crystal panel has a secondary element a bright spot, the element is divided into a first block and a second block. The alignment film of the liquid crystal panel which is closer to the color filter layer has a first-to-be-destroyed area corresponding to the first block and a second block. The destruction zone corresponds to the second block, and one of the liquid crystal layers of the liquid crystal panel has a first evaporation zone corresponding thereto The first to-be-destroyed area and a first to-be-evaporated area correspond to the second to-be-destroyed area, the method comprising: causing a laser device to emit a first laser beam, and shooting the liquid crystal layer to be in the evaporation zone a liquid crystal, the first laser beam is sufficient to evaporate the liquid crystal in the first evaporation zone; the laser device emits a second laser beam, and the liquid crystal in the second evaporation zone of the liquid crystal layer is shot. The two laser beams are sufficient to evaporate the liquid crystal in the second evaporation zone of 18 200918987; causing the laser device to emit a third laser beam, and shooting the liquid crystal layer: residual liquid crystal in the first to be evaporated region, the third The laser beam is sufficient to emit residual liquid crystal located in the first to-be-evaporated region; 々 causing the:-shooting device to emit a fourth laser beam, and shooting the liquid crystal layer: a residual liquid crystal in the region to be emitted The four laser beams are sufficient to emit residual liquid crystal in the second evaporation zone; and the laser device emits a fifth laser beam, sequentially shooting the first to-be-destroyed area of the alignment film and the second to be destroyed Zone, the fifth laser beam is sufficient Destroying the plurality of grooves in the two regions of the alignment film. 7. The method of claim 6, comprising: adjusting the laser device before the turtle beam The first-laser beam is elongated and slightly shorter than the long side of the first block and parallel to the long side of the first block; and the laser device is adjusted prior to emitting the second laser beam, The second laser beam is formed into an elongated shape and the length is slightly shorter than the long side of the second block, and is parallel to the long side of the second block. 8. The method of claim 7, The method includes: adjusting the laser device to emit a second laser beam to form a dot shape before transmitting the third laser beam; and adjusting the laser device to emit the fourth laser beam to 19 200918987 makes the fourth laser beam into a dot shape. 9. The method of claim 8, comprising adjusting the laser device to cause the fifth laser beam to be elongated and shorter than the length of the fifth laser beam. The short side of the first block is parallel to the short side of the first block. 10. The method of claim 1, comprising: attaching a transparent film to the surface of the liquid crystal panel facing the laser device before the laser device emits the first laser beam, the transparent The film comprises: a genus: a bright flat film and a layer of transparent adhesive formed on the transparent flat film