WO2014161209A1

WO2014161209A1 - Edge grinding method for glass substrate of display panel

Info

Publication number: WO2014161209A1
Application number: PCT/CN2013/074645
Authority: WO
Inventors: 陈杰; 李春良; 罗长诚
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2013-04-02
Filing date: 2013-04-24
Publication date: 2014-10-09
Also published as: CN103170884B; CN103170884A

Abstract

Disclosed is an edge grinding method for a glass substrate of a display panel, comprising: Step 1. conveying a glass substrate of a display panel to be ground to a grinding device, and positioning the glass substrate to wait for a grinding whetstone of the grinding device to perform an edge grinding; Step 2. providing a first barrier plate and a second barrier plate; Step 3. moving the first barrier plate such that the plate is in contact with the upper surface of the glass substrate, and moving the second barrier plate such that the plate is in contact with the lower surface of the glass substrate; and Step 4. performing an edge grinding operation. In the edge grinding method, by means of arranging the barrier plates between the grinding area and the non-grinding area of the glass substrate, the barrier plates prevent dust for the glass substrate, thereby effectively preventing the glass chips generated when the grinding device grinds the grinding area of the glass substrate from flying onto the non-grinding area of the glass substrate, and further effectively protecting the surface of the non-grinding area and preventing the surface of the non-grinding area from being damaged.

Description

Glass substrate edging method for display panel

The present invention relates to the field of finishing, and more particularly to a glass substrate edging method for a display panel. Background technique

The flat display device has many advantages such as thin body, power saving, no radiation, and has been widely used. The existing flat display devices mainly include a liquid crystal display (LCD) and an organic light emitting display (OLED).

Referring to FIG. 1 , a conventional liquid crystal display device generally includes: a backlight module 100 , a plastic frame 300 disposed on the backlight module 100 , a liquid crystal display panel 500 disposed on the plastic frame 300 , and a liquid crystal display panel 500 . The front panel (Bezel) 700, the backlight module 100 includes: a backplane 110, a backlight 130 disposed in the backplane 110, and a light guide plate disposed on the reflective sheet 150 disposed on the reflective sheet 150. And the optical film set 190 disposed on the light guide plate 170, the plastic frame 300 is used to carry the liquid crystal display panel 500, and the front frame 700 is locked with the back plate 110 of the backlight module 100, and then assembled into a liquid crystal display. Device. The liquid crystal display panel 500 (shown in FIG. 2) includes a thin film transistor (TFT) substrate 502, a color film (CF) substrate 504 disposed opposite to the TFT substrate 502, and a TFT substrate 502 and a CF substrate 504. The liquid crystal molecule 506, the thin film transistor substrate 502 includes a first glass substrate 522 and a thin film transistor 524 formed on the first glass substrate 522. The color filter substrate 504 includes a second glass substrate 542 and a color film formed on the second glass substrate 542. 544.

Referring to FIG. 3 , the conventional organic light emitting display panel generally includes a glass substrate 900 , a transparent conductive layer 902 formed on the glass substrate 900 , and a hole transport layer (HTL) 904 formed on the transparent conductive layer 902. An organic light emitting layer (EML) 906 formed on the hole transport layer 904, an electron transport layer (ETL) 908 formed on the organic light emitting layer 906, and a cathode formed on the electron transport layer 908 (Cathode) 909, wherein the transparent conductive layer 902 is an anode (Anode) of an organic light emitting display panel, which is generally formed of indium tin oxide (ITO), when the organic light emitting display panel is subjected to direct current (DC) , Direct Current ) When the forward bias is generated, the applied voltage energy drives the electrons (Electron) and holes (Hole) into the organic light-emitting display panel from the cathode 909 and the anode 902, respectively, when both electrons and holes Conduction The encounter and combination in the middle form the so-called Electron-Hole Capture. When the chemical molecules of the organic light-emitting layer 906 are excited by the external energy, if the electron spin (electron spin) and the ground state electrons are paired, the singlet state (Singlet), the light released by the light is Fluorescence; If the excited state electrons and the ground state electron spins are unpaired and parallel, they are called triplets, and the light they emit is Phosphorescence. When the state of the electron is returned from the excited state high energy level to the steady state low energy level, its energy will be emitted as Light Emission or Heat Dissipation, respectively, in which part of the photon is used for display function.

The above two kinds of flat display panels all include a glass substrate, and the glass substrate is generally formed by cutting large glass, and is obtained by a process such as edging, and the existing glass substrate edging machine edging the glass substrate, the glass The debris will splash into the non-abrasive area. In order to ensure the cleanliness of the non-abrasive area of the glass substrate and avoid the influence on the subsequent process, the current practice is to directly flush with water during the edging process. However, this method can only be used for glass. The substrate is cleaned and does not prevent the glass debris from being scratched on the surface of the non-abrasive area of the glass substrate of the display panel. Summary of the invention

It is an object of the present invention to provide a method for edging a glass substrate of a display panel, which is simple in operation, can effectively avoid contamination and damage of the glass swarf on the surface of the non-abrasive region, and effectively improve work efficiency.

In order to achieve the above object, the present invention provides a glass substrate edging method for a display panel, comprising the following steps:

Step 1. Transfer the glass substrate of the display panel to be polished to the polishing device, and position the glass substrate to wait for the grinding stone of the polishing device to be edging;

Step 2, providing first and second baffles;

Step 3: moving the first baffle to the upper surface of the contact glass substrate, moving the second baffle to contact the lower surface of the glass substrate;

Step 4. Perform the edging operation.

In step 2, the first and second baffles are flat and have a width greater than a width of the glass substrate.

The first and second baffles after the movement in step 3 are respectively perpendicular to the glass substrate.

In step 2, the first and second baffles are respectively disposed on the side of the glass substrate facing the glass substrate to be in contact with the glass substrate.

The first and second buffer bodies are wedge-shaped in cross section and are made of an elastic material.

The first and second buffer bodies are made of a rubber material. In step 3, the moved first and second baffles are adjacent to the grinding vermiculite.

The step 4 includes: spraying water vapor, and then rotating the grinding stone to grind the glass substrate while discharging the water vapor and the debris generated during the grinding.

The display panel is an OLED display panel.

The display panel is a liquid crystal display panel.

The present invention also provides a glass substrate edging method for a display panel, comprising the following steps: Step 1. Transfer a glass substrate of a display panel to be polished to a polishing device, and position the glass substrate to wait for grinding of the grinding stone of the polishing device;

Step 2, providing first and second baffles;

Step 4. Perform a edging operation;

Wherein, in step 2, the first and second baffles are in the shape of a flat plate, and the width thereof is greater than the width of the glass substrate;

The first and second baffles in the step 3 are respectively perpendicular to the glass substrate; wherein, in the step 2, the first and second baffles are respectively disposed on the side of the glass substrate, and the first and second baffles are respectively disposed. The punch is in contact with the glass substrate;

Wherein the first and second buffer bodies are wedge-shaped in cross section, and are made of an elastic material; wherein the first and second buffer bodies are made of a rubber material;

Wherein, in step 3, the moved first and second baffles are adjacent to the grinding vermiculite;

Wherein, the step 4 includes: spraying water vapor, and then rotating the grinding stone to grind the glass substrate while discharging the water vapor and the debris generated during the grinding;

The display panel is an OLED display panel.

Advantageous Effects of Invention According to the method for edging a glass substrate of a display panel of the present invention, by providing a baffle between the polished region of the glass substrate and the non-abrasive region, the baffle protects the glass substrate from dust during the grinding process, thereby effectively avoiding the polishing device The glass frit generated during the polishing of the polished region of the glass substrate splashes into the non-abrasive region of the glass substrate, thereby effectively protecting the surface of the non-abrasive region, thereby avoiding the influence of surface damage of the non-abrasive region of the glass substrate on subsequent processes, The amplitude reduces the cost. At the same time, since the buffer body is disposed on the end surface of the baffle facing the glass substrate, the vibration generated by the friction between the glass substrate and the polishing device is effectively buffered, and the damage caused by the vibration to the glass substrate is greatly reduced.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings. DRAWINGS

The technical solutions and other advantageous effects of the present invention will be apparent from the following detailed description of embodiments of the invention.

In the drawings,

1 is a perspective exploded view of a conventional liquid crystal display device;

2 is a schematic structural view of a conventional liquid crystal display panel;

3 is a schematic perspective view of a conventional organic light emitting display panel;

4 is a flow chart of a method for edging a glass substrate of a display panel of the present invention;

5 is a schematic view showing a relative movement relationship between a baffle plate, a polishing device, and a glass substrate in a method for edging a glass substrate of a display panel according to the present invention;

6 is a schematic view showing the relative positional relationship between the baffle plate, the glass substrate and the polishing device when the glass substrate is edged by the method for edging the glass substrate of the display panel of the present invention;

Fig. 7 is a view showing the positional relationship of main components in a polishing apparatus for realizing a glass substrate edging method of a display panel of the present invention. detailed description

In order to further clarify the technical means and effects of the present invention, the following detailed description will be made in conjunction with the preferred embodiments of the invention and the accompanying drawings.

Referring to FIG. 4 to FIG. 6, the present invention provides a glass substrate edging method for a display panel, which includes the following steps:

Step 1. Transfer the glass substrate 40 of the display panel to be polished to the polishing apparatus, and position the glass substrate 40 to wait for the grinding vermiculite 24 of the polishing apparatus to be edging.

The glass substrate 40 includes a polishing region 402 and a non-abrasive region 404 on the side of the polishing region 402. The abrasive vermiculite 24 of the polishing apparatus is in contact with the abrasive region 402. Step 1 can be accomplished using prior art techniques which are prior art devices that include securing the glass substrate 40 at a polishing station of the polishing apparatus.

Step 2. Provide first and second baffles 26, 28.

The first and second baffles 26, 28 are flat and have a width greater than the width of the glass substrate 40.

First and second buffer bodies 262 and 282 are respectively disposed on one side of the first and second baffles 26 and 28 facing the glass substrate 40. The first and second buffer bodies 262 and 282 may be made of an elastic material. Preferably, the rubber material has a certain elasticity, and the first and second buffer bodies 262, 282 may be provided in a wedge shape in cross section, the width of which is directed by the first and second baffles 26, 28 toward the glass substrate. 40 gradually shrinking, the first and second baffles 26, 28 respectively contact the glass substrate 40 through the first and second buffer bodies 262, 282, since the first and second buffer bodies 262, 282 have a certain The elasticity does not cause damage to the glass substrate 40, and the first and second buffer bodies 262, 282 can also vibrate the abrasive vermiculite 24 of the polishing apparatus when grinding the polishing area 402 of the glass substrate 40. The buffering is prevented from causing damage to the glass substrate 40 by the vibration generated when the grinding vermiculite 24 of the polishing apparatus grinds the polishing region 402 of the glass substrate 40.

Step 3: moving the first baffle 26 to the upper surface of the contact glass substrate 40, moving the second baffle 28 to contact the lower surface of the glass substrate 40;

The moved first and second shutters 26, 28 are perpendicular to the glass substrate 40, respectively. Preferably, the first and second shutters 26, 28 are movable in a direction perpendicular to the glass substrate 40.

The moved first and second baffles 26, 28 are adjacent to the abrasive vermiculite 24. Preferably, the first and second baffles 26, 28 contact the glass substrate 40 between the polishing region 402 and the non-polishing region 404, thereby blocking the non-abrasive region 404 from the grinding region 402 and the grinding meteorite of the grinding device. Outside of 24, the glass swarf generated when the abrasive region 402 is ground by the abrasive vermiculite 24 that effectively blocks the polishing device splashes into the non-abrasive region 404.

Referring to FIG. 5 (the direction of the arrow indicates the moving direction of each component) and FIG. 6, in the present embodiment, the glass substrate 40 is transported toward the grinding vermiculite 24 of the polishing apparatus, and the polishing area 402 of the glass substrate 40 and the polishing apparatus are After the abrasive vermiculite 24 is in contact, the first and second baffles 26, 28 are respectively moved toward the glass substrate 40 to the position shown in FIG. 6, the first and second buffers of the first and second baffles 26, 28. 262 and 282 respectively abut against the upper surface and the lower surface of the glass substrate 40. In this embodiment, the movement of the first and second baffles 26, 28 is relatively independent. Preferably, the upper limit of the movement of the second baffle 28 is flush with the lower surface of the glass substrate 40. The movement of the first baffle 26 is applied to the glass substrate 40 of different thicknesses.

Step 4. Perform the edging operation.

The step 4 includes: spraying water vapor, and then rotating the grinding vermiculite 24 to grind the glass substrate 40 while discharging the water vapor and the debris generated during the grinding.

Referring to FIG. 7 , in the step 4 , the grinding vertex 24 of the polishing apparatus grinds the polishing area 402 of the glass substrate 40 , and the steam spraying device 27 can be used to spray water vapor onto the upper and lower surfaces of the polishing area 402 of the glass substrate 40 , and the water vapor is used to rinse the glass substrate 40 . At the same time, it also serves as a cooling function to prevent the heat generated by the friction between the grinding vermiculite 24 and the glass substrate 40 of the grinding device from causing deformation of the glass substrate 40, and at the same time, the exhausting device 29 is used for spraying the steaming device 27. The glass flakes generated by the grinding of the grinding vermiculite 24 of the water vapor and the grinding device are discharged, and the polishing region 402 of the glass substrate 40 is further cleaned.

The steaming device 27 can be disposed on the first and second baffles 26, 28 and the grinding meteorite of the grinding device Between 24, the exhaust device 29 can be disposed behind the grinding stone 24 of the grinding device. When grinding, the steam blasting device 27 and the venting device 29 can be used in conjunction with the first and second baffles 26, 28 to further cleanse the stripping debris.

Of course, after step 4 is completed, the first and second baffles 26, 28 are moved away from the glass substrate 40, and then the glass substrate 40 is transported away from the lapping station.

In summary, the glass substrate edging method of the display panel of the present invention provides a baffle between the polished area of the glass substrate and the non-polished area, and the baffle protects the glass substrate from dust during the grinding process, thereby effectively preventing the polishing apparatus from being The glass flakes generated when the polishing area of the glass substrate is polished are splashed into the non-polishing area of the glass substrate, thereby effectively protecting the surface of the non-polishing area, thereby avoiding the influence of surface damage of the non-abrasive area of the glass substrate on subsequent processes, The cost is reduced. At the same time, since the buffer body is disposed on the end surface of the baffle toward the glass substrate, the vibration generated by the friction between the glass substrate and the polishing device is effectively buffered, and the damage caused by the vibration to the glass substrate is greatly reduced.

In the above, various other changes and modifications can be made in accordance with the technical solutions and technical concept of the present invention, and all such changes and modifications are within the scope of the claims of the present invention. .

Claims

Rights request

A method for edging a glass substrate of a display panel, comprising the steps of:

Step 2, providing first and second baffles;

Step 4. Perform the edging operation.

The glass substrate edging method of the display panel according to claim 1, wherein in the step 2, the first and second baffles are in a flat shape, and the width thereof is larger than the width of the glass substrate.

3. The method of edging a glass substrate of a display panel according to claim 1, wherein the first and second barriers after the movement in step 3 are perpendicular to the glass substrate.

The method of edging a glass substrate of a display panel according to claim 1, wherein in the step 2, the first and second baffles are respectively provided with a first and a second buffer body facing a side of the glass substrate. In contact with the glass substrate.

The glass substrate edging method of the display panel according to claim 4, wherein the first and second buffer bodies have a wedge shape in cross section, and are made of an elastic material.

The method of edging a glass substrate of a display panel according to claim 5, wherein the first and second buffer bodies are made of a rubber material.

7. The method of edging a glass substrate of a display panel according to claim 1, wherein in step 3, the moved first and second baffles are adjacent to the ruby vermiculite.

8. The glass substrate edging method of a display panel according to claim 1, wherein the step 4 comprises: spraying water vapor, and then rotating the gangue to grind the glass substrate while discharging the water vapor and the debris generated during the grinding.

9. The glass substrate edging method of a display panel according to claim 1, wherein the display panel is an OLED display panel.

The method of edging a glass substrate of a display panel according to claim 1, wherein the display panel is a liquid crystal display panel.

11. A glass substrate edging method for a display panel, comprising the steps of:

Step 2, providing first and second baffles; Step 3, moving the first baffle to the upper surface of the contact glass substrate, moving the second baffle to contact the lower surface of the glass substrate;

Step 4. Perform a edging operation;

The display panel is an OLED display panel.