Display panel and manufacturing method

Abstract

This invention discloses a display panel, including a substrate, a glass cover, a reflective structure disposed on the substrate, and a frame adhesive surrounding the reflective structure. OCR adhesive is disposed on the inner side of the reflective structure, and the frame adhesive and OCR adhesive are bonded to the glass cover. The display panel of this invention, by providing a reflective structure between the frame adhesive and the OCR adhesive, can avoid twisting of the adhesive lines on all four sides of the frame adhesive, avoid the risk of the glass cover detaching due to decreased adhesion of the frame adhesive, avoid breakage or overflow of the filled OCR adhesive, avoid side light leakage after the product is lit, improve product display brightness, and increase the yield rate after product bonding. This invention also discloses a method for manufacturing the display panel.

Description

Technical Field

[0001] This invention belongs to the field of optical display technology. Specifically, this invention relates to a display panel and its manufacturing method. Background Technology

[0002] Currently, in the traditional OLED and LED industries, silicon-based devices are manufactured using silicon wafers as the substrate, transparent glass as the cover, DAM (Dielectric Atomization) frame bonding as the adhesive layer, and liquid crystal or OCR (Optical Clear Resin) as the display area.

[0003] During the manufacturing process of display panel products, when DAM adhesive and OCR adhesive or liquid crystal are brought together, an abnormal phenomenon of mutual fusion occurs (OCR or liquid crystal has low adhesion and high fluidity). This abnormality not only causes the adhesive lines on the four sides of the DAM frame adhesive to twist, but also reduces the adhesion of the frame adhesive, posing a risk of the glass cover falling off. It may even cause the filled OCR to break through the frame adhesive or overflow outside the frame adhesive, thus causing the display panel product to be scrapped.

[0004] The aim is to provide an improved display panel and its manufacturing method, particularly regarding how to avoid the problem of glue line twisting in the frame adhesive, thereby improving product quality. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a display panel that avoids the problem of glue line distortion in the frame adhesive, thereby improving product quality.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a display panel, including a substrate, a glass cover, a reflective structure disposed on the substrate, and a frame adhesive disposed around the reflective structure, wherein an OCR adhesive is disposed on the inner side of the reflective structure, and the frame adhesive and the OCR adhesive are bonded to the glass cover.

[0007] A groove is provided on the substrate, and the reflective structure is embedded in the groove.

[0008] The reflective structure is a reflective sheet or reflective film.

[0009] The reflective structure is a rectangular frame structure.

[0010] The frame adhesive is DAM adhesive.

[0011] The present invention also provides a method for manufacturing a display panel, comprising:

[0012] Provide a substrate;

[0013] A reflective structure is mounted on the substrate;

[0014] A frame adhesive is coated on the substrate, and the frame adhesive is disposed around the reflective structure;

[0015] OCR adhesive is filled inside the reflective structure;

[0016] A glass cover is attached to the substrate, and frame adhesive and OCR adhesive are bonded to the glass cover.

[0017] A groove is provided on the substrate, and when the reflective structure is installed on the substrate, the reflective structure is embedded in the groove.

[0018] The grooves are prepared on the substrate using a dry etching process.

[0019] The frame adhesive is DAM adhesive, which is applied to the substrate using a DAM coating machine.

[0020] The OCR adhesive is filled into the inside of the reflective structure using a FILL coating machine.

[0021] The display panel of the present invention, by setting a reflective structure between the frame adhesive and the OCR adhesive, can avoid the twisting of the adhesive lines on the four sides of the frame adhesive, avoid the risk of glass cover falling off due to the decrease of the adhesion of the frame adhesive, avoid the OCR filling breaking or overflowing outside the frame adhesive, avoid the problem of side light leakage after the product is lit, improve the product display brightness, and improve the yield rate after the product is bonded. Attached Figure Description

[0022] This manual includes the following figures, which illustrate the following:

[0023] Figure 1 This is a schematic diagram of the structure of the display panel of the present invention;

[0024] Figure 2 This is a top view of the display panel of the present invention;

[0025] Figure 3 This is a schematic diagram of the substrate structure;

[0026] Figure 4 This is a schematic diagram of the assembly of the substrate and the reflective structure;

[0027] Figure 5 This is a schematic diagram of the assembly of the substrate, reflective structure, and frame adhesive;

[0028] Figure 6 This is a schematic diagram of the reflective structure after it has been filled with OCR adhesive;

[0029] Figure 7 This is a schematic diagram showing the effect of the product after it is lit up;

[0030] Figures 8a to 8d Schematic diagrams of four different reflective structures at the bottom;

[0031] The markings in the diagram are: 1. Substrate; 2. Glass cover; 3. Reflective structure; 4. Frame adhesive; 5. OCR adhesive; 6. Groove; 7. Frame adhesive placement. Detailed Implementation

[0032] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0033] like Figures 1 to 7 As shown, the present invention provides a display panel, including a substrate 1, a glass cover plate 2, a reflective structure 3 disposed on the substrate 1, and a frame adhesive 4 disposed around the reflective structure 3. An OCR adhesive 5 is disposed on the inner side of the reflective structure 3, and the frame adhesive 4 and the OCR adhesive 5 are bonded to the glass cover plate 2.

[0034] Specifically, such as Figures 1 to 7 As shown, a groove 6 is provided on the substrate 1, and a reflective structure 3 is embedded in the groove 6. The substrate 1 and the reflective structure 3 are perpendicular. The substrate 1 is a silicon wafer, and the reflective structure 3 can be made of glass, thin film, or reflective material. A light-emitting device unit is provided on the substrate 1, which can be a Micro OLED or Micro LED, etc. The reflective structure 3 can concentrate light and enhance brightness. The light generated by the light-emitting device unit is reflected and refracted by the reflective structure 3.

[0035] like Figures 1 to 7 As shown, the reflective structure 3 is a reflective sheet or reflective film. The inner wall of the reflective structure 3 is in contact with the OCR adhesive 5, and the outer wall of the reflective structure 3 is in contact with the frame adhesive 4. The frame adhesive 4 is DAM adhesive. The reflective structure 3 separates the OCR adhesive 5 and the frame adhesive 4. The OCR adhesive 5 and the frame adhesive 4 are located between the substrate 1 and the glass cover plate 2.

[0036] like Figures 1 to 7 As shown, the reflective structure 3 is a rectangular frame structure, and the groove 6 extends downward from the top surface of the substrate 1 to the interior of the substrate 1. The lower end of the reflective structure 3 is embedded in the groove 6.

[0037] like Figure 8a As shown, the groove 6 is a rectangular groove, and the bottom surface of the reflective structure 3 and the inner bottom surface of the groove 6 are planes parallel to the substrate 1 and the glass cover plate 2. The bottom surface of the reflective structure 3 is in contact with the inner bottom surface of the groove 6.

[0038] like Figure 8bAs shown, the groove 6 is an arc-shaped groove, and the lower end of the reflective structure 3 is an arc-shaped structure that matches the groove 6. The bottom surface of the reflective structure 3 and the inner bottom surface of the groove 6 are both arc surfaces, and the bottom surface of the reflective structure 3 and the inner bottom surface of the groove 6 are in contact.

[0039] like Figure 8c As shown, the lower end of the reflective structure 3 is an arc-shaped structure that matches the groove 6. The lower end of the reflective structure 3 forms an inwardly recessed arc-shaped groove. The bottom surface of the reflective structure 3 and the inner bottom surface of the groove 6 are both arc surfaces, and the bottom surface of the reflective structure 3 and the inner bottom surface of the groove 6 are in contact.

[0040] like Figure 8d As shown, the groove 6 is a V-shaped groove, and the lower end of the reflective structure 3 is a V-shaped structure that matches the groove 6. The bottom surface of the reflective structure 3 is V-shaped and fits into the inner bottom surface of the groove 6.

[0041] The various reflective structures 3 described above, combined with the grooves 6, form an interlocking structure, which offers the following advantages:

[0042] ① The connection is tighter, and the concave and convex structure restricts displacement;

[0043] ② Positioning accuracy: When placed in automatic alignment, errors can be reduced;

[0044] ③ Stronger pressure resistance: Suitable for high pressure, high temperature or vibration environments.

[0045] The present invention also provides a method for manufacturing a display panel, comprising the following steps:

[0046] S1. Provide a substrate 1;

[0047] S2. Install reflective structure 3 on substrate 1;

[0048] S3. Apply frame adhesive 4 to substrate 1, with frame adhesive 4 surrounding reflective structure 3;

[0049] S4. Fill the inside of the reflective structure 3 with OCR adhesive 5;

[0050] S5. Attach the glass cover plate 2 to the top of the substrate 1. The frame adhesive 4 and OCR adhesive 5 are then attached to the glass cover plate 2.

[0051] In step S1 above, a groove 6 is provided on the substrate 1, and the groove 6 is prepared on the substrate 1 by a dry etching process.

[0052] In step S2 above, when the reflective structure 3 is installed on the substrate 1, the reflective structure 3 is embedded in the groove 6.

[0053] In step S3 above, the frame adhesive 4 is DAM adhesive. The frame adhesive 4 is coated on the substrate 1 using a DAM coating machine, and the outer wall surface of the reflective structure 3 is in contact with the frame adhesive 4.

[0054] In step S4 above, an OCR adhesive 5 is filled into the inner side of the reflective structure 3 using a FILL coating machine, and the inner wall surface of the reflective structure 3 is in contact with the OCR adhesive 5.

[0055] In step S5 above, a vacuum laminator is used to laminate the glass cover plate 2 onto the substrate 1.

[0056] The display panel with the above structure and its manufacturing method have the following advantages:

[0057] 1. It can prevent the twisting of the adhesive lines on the four sides of the DAM frame;

[0058] 2. It can avoid the risk of the glass cover falling off due to a decrease in the adhesion of the frame adhesive;

[0059] 3. It can prevent the OCR glue filling from breaking or overflowing outside the frame glue;

[0060] 4. It can prevent light leakage from the sides after the product is lit up;

[0061] 5. Can improve product display brightness;

[0062] 6. Improve the yield rate after product bonding.

[0063] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A display panel, comprising a substrate and a glass cover, characterized in that, It also includes a reflective structure disposed on the substrate and a frame adhesive disposed around the reflective structure, with OCR adhesive disposed on the inner side of the reflective structure, and the frame adhesive and OCR adhesive being bonded to the glass cover plate.

2. The display panel according to claim 1, characterized in that, A groove is provided on the substrate, and the reflective structure is embedded in the groove.

3. The display panel according to claim 1, characterized in that, The reflective structure is a reflective sheet or reflective film.

4. The display panel according to any one of claims 1 to 3, characterized in that, The reflective structure is a rectangular frame structure.

5. The display panel according to any one of claims 1 to 3, characterized in that, The frame adhesive is DAM adhesive.

6. A method for manufacturing a display panel, characterized in that, include: Provide a substrate; A reflective structure is mounted on the substrate; A frame adhesive is coated on the substrate, and the frame adhesive is disposed around the reflective structure; OCR adhesive is filled inside the reflective structure; A glass cover is attached to the substrate, and frame adhesive and OCR adhesive are bonded to the glass cover.

7. The method for manufacturing a display panel according to claim 6, characterized in that, A groove is provided on the substrate, and when the reflective structure is installed on the substrate, the reflective structure is embedded in the groove.

8. The method for manufacturing a display panel according to claim 7, characterized in that, The grooves are prepared on the substrate using a dry etching process.

9. The method for manufacturing a display panel according to claim 7, characterized in that, The frame adhesive is DAM adhesive, which is applied to the substrate using a DAM coating machine.

10. The method for manufacturing a display panel according to claim 7, characterized in that, The OCR adhesive is filled into the inside of the reflective structure using a FILL coating machine.

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