DISPLAY PANEL

• US 20190317360A1
• Filed: 04/17/2018
• Published: 10/17/2019
• Est. Priority Date: 04/17/2018
• Status: Active Grant

• Current Assignee: Himax Display Incorporated (Himax Technologies Incorporated)
• Original Assignee: Himax Display Incorporated (Himax Technologies Incorporated)
• Inventors: Pan, Po-Hung
• Granted Patent: US 10,976,589 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 2201/50 Protective arrangements

Abstract

A display panel according to an embodiment has a first region and a second region surrounded by the first region. The display panel may include a top substrate, a bottom substrate opposite to the top substrate, and a sealant and a display medium layer disposed between the top substrate and the bottom substrate. The top substrate may include a blanket anti-reflective layer disposed on an upper surface of the top substrate, a patterned light shielding layer disposed in the first region of the display panel, and a packaging structure packing the patterned light shielding layer. The patterned light shielding layer may be in direct contact with an upper surface of the blanket anti-reflective layer.

Claims

1. A display panel, having a first region and a second region surrounded by the first region, the display panel comprising:

a top substrate, comprising;

a support plate;

a blanket anti-reflective layer, disposed on an upper surface of the support plate; and

a patterned light shielding layer disposed on the support plate and located within the first region of the display panel, wherein the patterned light shielding layer is in physical contact with an upper surface of the blanket anti-reflective layer;

a packaging structure packing the patterned light shielding layer;

a bottom substrate opposite to the top substrate;

a display medium layer disposed between the top substrate and the bottom substrate; and

a sealant, disposed between the top substrate and the bottom substrate, wherein the sealant is located in the first region of the display panel and surrounds the display medium layer.

2. The display panel of claim 1, wherein the packaging structure comprises a protective layer in physical contact with a top surface of the patterned light shielding layer.

3. The display panel of claim 2, wherein the protective layer further completely covers the upper surface of the blanket anti-reflective layer in the second region.

4. The display panel of claim 2, wherein the protective layer further covers a side surface of the support plate, a side surface of the sealant, a side surface of the bottom substrate, and a bottom surface of the bottom substrate.

5. The display panel of claim 2, wherein the protective layer extends from the top surface of the patterned light shielding layer toward the second region and has an opening Orevealing at least a portion of the second region of the display panel.

6. The display panel of claim 2, wherein a material of the protective layer comprises an inorganic material.

7. The display panel of claim 2, wherein the patterned light shielding layer has an inner edge surface and an outer edge surface, the inner edge surface defines a boundary between the first region and the second region, the outer edge surface is opposite to the inner edge surface, and the packaging structure further comprises at least one sidewall pattern arranged along and in contact with at least one of the inner edge surface of the patterned light shielding layer and the outer edge surface of the patterned light shielding layer.

8. The display panel of claim 7, wherein a height of the sidewall pattern is not less than a thickness of the patterned light shielding layer at the at least one of the inner edge surface and the outer edge surface.

9. The display panel of claim 7, wherein the protective layer reveals a top surface of the sidewall pattern.

10. The display panel of claim 7, wherein a material of the sidewall pattern comprises an inorganic material.

11. The display panel of claim 7, wherein the protective layer comprises a portion disposed on the blanket anti-reflective layer in the second region and the sidewall pattern is positioned between the patterned light shielding layer and the portion of the protective layer.

12. The display panel of claim 1, wherein an upper surface of the packaging structure is modified, and a layer of hydrophobic material is formed thereon.

13. The display panel of claim 1, wherein the upper surface of the blanket anti-reflective layer in the second region is modified, and a layer of hydrophobic material is formed thereon.

14. A display panel, having a first region and a second region surrounded by the first region, the display panel comprising:

a top substrate, comprising;

a support plate;

a blanket anti-reflective layer, disposed on the support plate; and

a patterned light shielding layer disposed on the blanket anti-reflective layer and located within the first region of the display panel, wherein the patterned light shielding layer has an inner edge surface and an outer edge surface, the inner edge surface defines a boundary between the first region and the second region of the display panel, and the outer edge surface is opposite to the inner edge surface;

a sidewall pattern arranged along at least one of the inner edge surface and the outer edge surface of the patterned light shielding layer;

a bottom substrate opposite to the top substrate; and

a display medium layer disposed between the top substrate and the bottom substrate.

15. The display panel of claim 14, wherein a height of the sidewall pattern is not less than a thickness of the patterned light shielding layer.

16. The display panel of claim 14, wherein the sidewall pattern is localized between the outer edge surface of the patterned light shielding layer and a side edge of the display panel.

17. The display panel of claim 14, wherein the sidewall pattern comprises an outer sidewall in physical contact with the outer edge surface of the patterned light shielding layer and an inner sidewall in physical contact with the inner edge surface of the patterned light shielding layer.

18. The display panel of claim 17, wherein a lateral width of the outer sidewall pattern is greater than a lateral width of the inner sidewall pattern.

19. The display panel of claim 14, further comprising a protective layer in physical contact with a top surface of the patterned light shielding layer.

20. The display panel of claim 19, wherein a material of the sidewall pattern is different than a material of the protective layer.