CN102116948B - Repairing method of display and repaired structure thereof - Google Patents

Abstract

A method for repairing a display and a repaired structure thereof are provided, wherein the method comprises the step of providing the display, and the display comprises a display panel and at least one optical film. The optical film is located on at least one outer surface of the display panel, the optical film is provided with an upper surface layer, a lower surface layer and an intermediate layer located between the upper surface layer and the lower surface layer, and the optical film has defects. And then, performing a laser repairing program to carbonize the corresponding defect of the optical film into a black spot, wherein the laser repairing program is to form the black spot in the upper surface layer of the optical film.

Description

Display repair method and its repaired structure

technical field

The invention relates to a display repair method and its repaired structure.

Background technique

A general liquid crystal panel is composed of an active element array substrate, a color filter substrate, and a liquid crystal layer arranged between the aforementioned two substrates. In addition, the aforementioned two substrates are usually adhered with a frame glue, and the liquid crystal is sealed therebetween. In addition, a polarizer is usually attached to the outer surface of the liquid crystal panel. Through the polarization direction of the polarizer and the twisting direction of the liquid crystal molecules, the bright state or dark state of each pixel unit of the display panel can be controlled. Generally, if there is a defect in the polarizer, a bright spot defect will be generated at a position corresponding to the defect during the operation of the display panel. This is mainly because the above-mentioned defects will cause light leakage in the display panel, so the defect constitutes a bright spot defect.

The traditional method of repairing the defects on the polarizer is to coat a layer of ink on the corresponding defect of the polarizer to cover the bright spots caused by the defect. However, since the ink is very easy to come off from the surface of the polarizer, the effect of this kind of repair is not ideal.

Contents of the invention

The invention provides a display repair method and its repaired structure, which can repair bright spot defects of a display panel.

The present invention provides a method for repairing a display and its repaired structure. The method includes providing a display, which includes: a display panel; and at least one optical film located on at least one outer surface of the display panel, wherein the optical film having an upper surface layer, a lower surface layer, and an intermediate layer located between the upper surface layer and the lower surface layer, wherein the optical film has a defect; and performing a laser repair process to carbonize the optical film corresponding to the defect into a Black spots, wherein the laser repair procedure is to form the black spots in the upper surface layer of the optical film. The laser repair procedure has a wavelength of 400-800 nanometers (nm). A laser pulse time of the laser repair procedure is ≤500 fs (femtosecond or femtosecond, ie 10-15th power second). A laser pulse energy of the laser repair procedure is at a frequency of 1 MHz, and the pulse energy is at a frequency of 1 MHz, and the pulse energy is ≥ 1.0 microjoule (μJ), wherein the frequency of 1 MHz is a preferred implementation mode, but the present invention does not depend on it. This is the limit, and can be changed accordingly according to the design requirements. The material of the upper surface layer and the lower surface layer of the optical film includes triacetyl cellulose. The middle layer of the optical film includes polyvinyl alcohol. The total thickness of the optical film is 100-500 microns (μm). The laser repair procedure is to repair the optical film at 1-100 microns. The display further includes at least one first optical film, and the first optical film is located on the upper surface layer, the lower surface layer, or both the upper surface layer and the lower surface layer of the optical film. The size of the defect is 10-1000 microns. The optical film is a polarizer.

The present invention further provides a repaired display structure, which includes a display panel; and at least one optical film located on at least one outer surface of the display panel, wherein the optical film has an upper surface layer, a lower surface layer and There is a middle layer between the surface layer and the lower surface layer, and there is a carbonized black spot in the upper surface layer of the optical film. The material of the upper surface layer and the lower surface layer of the optical film includes triacetyl cellulose. The middle layer of the optical film includes polyvinyl alcohol. The total thickness of the optical film is 100-500 microns. The carbonized black spots are located in the depth of 1-100 microns of the optical film. It further includes at least one first optical film, the first optical film is located on the upper surface layer, the lower surface layer, or both the upper surface layer and the lower surface layer of the optical film. The size of the carbonized black spots is 10-1000 microns. The optical film is a polarizer.

Based on the above, the present invention uses a laser repair procedure to carbonize the corresponding defects of the optical film into black spots. Since the carbonized black spots can cover the light leakage caused by the defects of the optical film, the defects will not cause the bright spot defects of the display panel.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

1 is a schematic cross-sectional view of a method for repairing a display according to an embodiment of the present invention;

Figures 2 to 3 are enlarged schematic diagrams corresponding to the region R in Figure 1;

FIG. 4 is a schematic cross-sectional view of an optical film according to another embodiment of the present invention.

[Description of main component symbols]

Detailed ways

FIG. 1 is a schematic cross-sectional view of a repairing method for a display according to an embodiment of the present invention. Referring to FIG. 1 , the repairing method of this embodiment firstly provides a display, which includes a display panel 100 and at least one optical film 200 , 300 .

The display panel 100 includes a first substrate 102 , a pixel array layer 104 , a second substrate 110 , an electrode layer/color filter layer 112 and a display medium 120 .

The first substrate 102 and the second substrate 110 are arranged opposite to each other, and the materials of the first substrate 102 and the second substrate 110 can be glass, quartz, organic polymer, or opaque/reflective materials (for example: conductive materials, metal, silicon wafer, ceramics, or other applicable materials), or other applicable materials.

The pixel array layer 104 is disposed on the first substrate 102 . The pixel array layer 104 includes a plurality of scan lines (not shown), a plurality of data lines (not shown) and a plurality of pixel structures (not shown), and each pixel structure corresponds to a scan line and a corresponding A data line is electrically connected. According to this embodiment, each pixel structure has an active element and a pixel electrode. The active device can be a bottom-gate TFT or a top-gate TFT, which includes a gate, a channel, a source and a drain.

The electrode layer/color filter layer 112 is disposed on the second substrate 110 . In more detail, the film layer 112 disposed on the second substrate 110 can be an electrode layer, a color filter layer, or an electrode layer and a color filter layer. According to an embodiment, the film layer 112 is composed of a color filter layer and an electrode layer covering the color filter layer. Here, the electrode layer is a transparent conductive layer, and its material includes metal oxide, such as indium tin oxide or indium zinc oxide. The color filter layer may include red, green and blue filter patterns. In addition, the color filter layer can further include a light-shielding pattern, which can also be called a black matrix.

The display medium 120 is located between the first substrate 102 and the second substrate 110 . The display medium 120 may include liquid crystal molecules, electrophoretic display medium or other applicable display medium.

In addition, the optical films 200 and 300 are located on the outer surface of the display panel 100 . In more detail, the optical film 300 is disposed on the outer surface 102 a of the first substrate 102 of the display panel 100 . The optical film 200 is disposed on the outer surface 110 a of the second substrate 110 of the display panel 100 . In other words, the optical film 300 is attached to the outer surface 102 a of the first substrate 102 , while the pixel array layer 104 is disposed on the inner surface opposite to the outer surface 102 a of the first substrate 102 . The optical film 200 is attached to the outer surface 100 a of the second substrate 110 , and the electrode layer/color filter layer 112 is disposed on the inner surface opposite to the outer surface 100 a of the second substrate 110 . According to this embodiment, the aforementioned optical films 200 and 300 are polarizers.

It is worth mentioning that, in this embodiment, the optical films 200 and 300 are respectively disposed on the two outer surfaces of the display panel 100 as an example, but the present invention is not limited thereto. According to other embodiments, the optical film 300 may be disposed only on the outer surface 102 a of the first substrate 102 of the display panel 100 , or the optical film 200 may be disposed only on the outer surface 110 a of the second substrate 110 of the display panel 100 .

In particular, in this embodiment, the optical film 200 has a defect 202 therein. The aforementioned defects 202 may be particles, dents or other defects that may cause light leakage of the display panel. The size of the aforementioned defects 202 is substantially 10-1000 microns (um). Therefore, in this embodiment, the laser repair procedure L is used to repair the above-mentioned light leakage defect, which is described in detail as follows.

FIG. 2 is an enlarged schematic view of a region R in FIG. 1 . Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the optical film 200 has an upper surface layer 214 , a lower surface layer 210 and an intermediate layer 212 between the upper surface layer 214 and the lower surface layer 210 . According to this embodiment, the material of the upper surface layer 214 and the lower surface layer 210 of the optical film 200 includes triacetyl cellulose (TAC), and the middle layer 212 of the optical film 200 includes polyvinyl alcohol (PVA).

Taking the embodiment of FIG. 2 as an example, the defect 202 of the optical film 200 is located on the upper surface layer 214 . Next, a laser repair procedure L is performed to carbonize the corresponding defects 202 of the optical film 200 into black spots 204 . In particular, the above-mentioned laser repair procedure L is to form black spots 204 in the upper surface layer 214 of the optical film 202 . The size of the carbonized black spots 204 formed by the laser repair procedure L is substantially larger than or equal to the size of the defect 202 . In addition, if the total thickness D1 of the optical film 200 is substantially 100-500 micrometers, the laser repair procedure L is substantially to repair the optical film 200 at 1-100 micrometers (ie, the depth D2). According to this embodiment, the wavelength of the laser repair procedure L is substantially 400-800 micrometers (nm). The laser pulse duration of the laser repair program L is substantially ≤500 fs (femtoseconds or femtoseconds, that is, 10-15 seconds). The laser pulse energy of the laser patch L is substantially ≥ 1.0 microjoule (μJ). The optimum operating frequency of the laser patch L is 1 MHz, but this frequency can be adjusted by technicians according to requirements, and is not limited to this example. And any frequency is included in the protection scope of the present invention.

Based on the above, in this embodiment, the laser repair procedure L is used to form black spots 204 in the upper surface layer 214 of the optical film 202. The carbonized black spots 204 can cover the light leakage caused by the defects 202 in the optical film 200, so The bright spots generated by the defect 202 can be repaired into dark spots.

In the embodiment of FIG. 2 , the defects 202 in the optical film 200 are formed in the upper surface layer 214 . However, the present invention is not limited thereto. According to other embodiments, as shown in FIG. 3 , the defect 202 in the optical film 200 may also be formed in the intermediate layer 212 . Certainly, according to another embodiment, the defect 202 in the optical film 200 may also be formed in the lower surface layer 212 (not shown). Regardless of whether the defect 202 in the optical film 200 is formed on the upper surface layer 214, the lower surface layer 210 or the intermediate layer 212, the laser repair procedure L of this embodiment is to form carbonized black spots 204 on the upper surface layer 214 of the optical film 200 to cover the defect 202 caused by light leakage. This is mainly because the upper surface layer 214 of the optical film 200 is the closest outer film layer, so the light of the laser repair procedure L can easily and quickly form carbonized black spots 204 on the upper surface layer 214 . The carbonized black dots 204 are mainly used to cover the light leakage generated by the defect 202 , so as long as the carbonized black dots 204 can be formed on the light leakage path sufficient to cover the defect 202 . Therefore, in this embodiment, the formation of carbonized black spots 204 on the upper surface layer 214 of the optical film 200 can not only cover the light leakage caused by the defect 202, but also make the laser repair procedure L easy to perform.

It is worth mentioning that most of the traditional methods for repairing the bright spot defects of the display panel are to repair the dark spots on the film layer (such as the color filter layer 112 ) in the display panel 100 . However, the disadvantage of performing dark spot repair on the color filter layer 112 is that if the defects (particles) of the optical film 200 are located in the two color filter patterns of the corresponding color filter layer 112 (such as the green filter pattern and the red filter pattern) patterns), because of light refraction, the area to be repaired by the color filter layer 112 needs to cover the entire green filter pattern and the red filter pattern. In this way, the area to be repaired will be too large, resulting in too obvious carbonized black spots, which will instead affect the display quality of the display panel. Therefore, the repairing method of this embodiment is to repair the optical film 200 outside the display panel 100 , and to carbonize the upper surface layer 214 of the optical film 200 to form black spots. Compared with the traditional repairing method, the repairing procedure of this embodiment is not only easier, but also easier to control the size of carbonized black spots.

In the above embodiments, the defect 202 in the optical film 200 is taken as an example for illustration. However, the present invention is not limited thereto. According to other embodiments, if another optical film 300 under the display panel 100 has a defect, it can also be repaired by using the laser repair procedure L mentioned above. That is, the surface layer of the optical film 300 is carbonized into black spots corresponding to the defects by using a laser repair procedure, so as to cover the light leakage caused by the defects.

In addition, in the above embodiment, the optical film 200 is exemplified with the upper surface layer 214 , the lower surface layer 210 and the intermediate layer 212 between the upper surface layer 214 and the lower surface layer 210 , but the present invention is not limited thereto. According to other embodiments, other optical films may be further disposed on the upper surface layer 214 and/or the lower surface layer 210 of the optical film 200 . Taking the embodiment of Fig. 4 as an example, an antireflection film 220 (Antiglare layer) can be further set on the upper surface layer 214 of the optical film 200, and a phase difference film 240 can be further set on the lower surface layer 210 of the optical film 200, wherein the phase difference An adhesive layer 230 is provided between the film 240 and the lower surface layer 210 . In addition, an adhesive layer 250 may be further disposed on the retardation film 240 , and the adhesive layer 250 is used to bond the laminated optical film of FIG. 4 to the display panel 100 .

To sum up, in this embodiment, a laser repair procedure is adopted to carbonize the corresponding defects of the optical film into black spots. Since the carbonized black spots can cover the light leakage caused by the defects of the optical film, the defects will not cause the bright spot defects of the display panel.

In addition, the repair procedure of this implementation is to form carbonized black spots on the upper surface of the optical film to cover the light leakage caused by the defects in the optical film. Since the upper surface layer of the optical film is the closest to the outer film layer, the light of the laser repair procedure can easily form carbonized black spots on the upper surface layer of the optical film. In other words, in this embodiment, the formation of carbonized black dots on the upper surface of the optical film can not only cover the light leakage caused by defects, but also make the laser repair procedure easy to perform.

Furthermore, the repairing method of this embodiment is to carbonize the optical film on the outside of the display panel, and to carbonize the upper surface of the optical film to form black spots. Compared with the traditional repairing method, the laser repairing procedure in this embodiment is easier, and it is also easier to control the size of the carbonized black spots.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (19)

1. the method for repairing and mending of a display comprises:

One display is provided, and it comprises:

One display panel; And

At least one blooming is positioned at least one outside surface of this display panel, and wherein this blooming has a upper epidermis, once top layer and the middle layer between this upper epidermis and this time top layer,

Wherein this blooming has a defective; And

Carry out a laser preparing program so that this blooming to should the fault location carbonization becoming a stain, wherein this laser preparing program is in this upper epidermis of this blooming, to form this stain.

2. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: the Wavelength of Laser of this laser preparing program is 400～800 nanometers.

3. the method for repairing and mending of display as claimed in claim 1 is characterized in that: the laser pulse time of this laser preparing program is≤500 femtoseconds.

4. the method for repairing and mending of display as claimed in claim 1 is characterized in that: a pulsed laser energy of this laser preparing program is under the frequency of 1MHz, and pulse energy is >=1.0 little joules.

5. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: this upper epidermis of this blooming and the material on this time top layer comprise triacetyl cellulose.

6. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: this middle layer of this blooming comprises polyvinyl alcohol (PVA).

7. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: the gross thickness of this blooming is 100～500 microns.

8. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: this laser preparing program is to repair at 1～100 micron place of this blooming.

9. the method for repairing and mending of display as claimed in claim 1; It is characterized in that: this display further comprises at least one first blooming; Be positioned on this upper epidermis of this blooming maybe on this time top layer, or on this upper epidermis and the following top layer this first blooming arranged all.

10. the method for repairing and mending of display as claimed in claim 1, it is characterized in that: this defective is of a size of 10～1000 microns.

11. the method for repairing and mending of display as claimed in claim 1 is characterized in that: this blooming is a polaroid.

12. the display device structure after the repairing comprises:

One display panel; And at least one blooming; Be positioned at least one outside surface of this display panel; Wherein this blooming has a upper epidermis, once top layer and the middle layer between this upper epidermis and this time top layer, and has a carbonization stain in this upper epidermis of this blooming.

13. the display device structure after the repairing as claimed in claim 12 is characterized in that: this upper epidermis of this blooming and the material on this time top layer comprise triacetyl cellulose.

14. the display device structure after the repairing as claimed in claim 12 is characterized in that: this middle layer of this blooming comprises polyvinyl alcohol (PVA).

15. the display device structure after the repairing as claimed in claim 12 is characterized in that: the gross thickness of this blooming is 100～500 microns.

16. the display device structure after the repairing as claimed in claim 12 is characterized in that: this carbonization stain is 1～100 micron depths that is positioned at this blooming.

17. the display device structure after the repairing as claimed in claim 12 is characterized in that: further comprise at least one first blooming, be positioned on this upper epidermis of this blooming maybe on this time top layer, or on this upper epidermis and the following top layer this first blooming is arranged all.

18. the display device structure after the repairing as claimed in claim 12 is characterized in that: this carbonization stain is of a size of 10～1000 microns.

19. the display device structure after the repairing as claimed in claim 12 is characterized in that: this blooming is a polaroid.

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