CN-117529137-B - Display panel and manufacturing method thereof

CN117529137BCN 117529137 BCN117529137 BCN 117529137BCN-117529137-B

Abstract

The application provides a display panel and a manufacturing method of the display panel, the display panel comprises: the light-emitting device comprises a substrate, a shading layer arranged on the surface of the substrate, a driving circuit layer arranged on the surface of the substrate and covering the shading layer, a first light guide layer arranged below the substrate, a second light guide layer arranged below the first light guide layer and a light-emitting layer arranged below the second light guide layer, wherein the first light guide layer comprises a first light dispersing part and a first light collecting part, the second light guide layer comprises a second light dispersing part and a second light collecting part, orthographic projections of the first light dispersing part and the second light dispersing part on the shading layer all cover the shading layer, and the light-emitting side of the light-emitting layer faces the second light guide layer. The backlight emitted by the light-emitting layer is sequentially dispersed by the second light dispersing part and the first light dispersing part in the process of irradiating the light-shielding layer, so that the amount of backlight reaching the light-shielding layer is small, leakage current generated by the photosensitive device is avoided, and the display effect of the display panel is improved.

Inventors

LV HENG
ZHOU YUNHONG
HE QIANG
YU YANG
LI LIJUAN

Assignees

武汉华星光电技术有限公司

Dates

Publication Date: 20260512
Application Date: 20230331

Claims (4)

1. A display panel, comprising: A substrate base; The shading layer is arranged on the surface of the substrate; the driving circuit layer is arranged on the surface of the substrate base plate and covers the shading layer; The first light guide layer comprises a first light dispersing part and a first light collecting part, and the orthographic projection of the first light dispersing part on the shading layer covers the shading layer; the second light guide layer comprises a second light dispersing part and a second light collecting part, and the orthographic projection of the second light dispersing part on the shading layer covers the shading layer; The light emitting side of the light emitting layer faces the second light guide layer; The first light dispersing part comprises a concave lens, and the first light collecting part comprises a convex lens, wherein the refractive power of the convex lens is weaker than that of the concave lens; the second light dispersing part comprises a right-angle triangular prism, the second light collecting part comprises an equilateral triangular prism, the height of the right-angle triangular prism is different from that of the equilateral triangular prism, or the second light dispersing part comprises a first equilateral triangular prism, the bottom of the first equilateral triangular prism is coated with a diffuse reflection material, the second light collecting part comprises a second equilateral triangular prism, and the heights of the first equilateral triangular prism and the second equilateral triangular prism are equal.
2. The display panel according to claim 1, wherein the driving circuit layer includes: the light shielding layer is positioned in the buffer layer; The front projection of the shading layer on the polycrystalline silicon layer covers the polycrystalline silicon layer; The insulating layer is arranged on the surface of the buffer layer and covers the polysilicon layer; and the grid layer is arranged on the surface of the insulating layer.
3. The display panel according to claim 2, wherein the buffer layer includes a first buffer layer and a second buffer layer which are sequentially stacked; the first buffer layer is attached to the surface of the substrate base plate; The second buffer layer is arranged between the first buffer layer and the insulating layer.
4. A method for manufacturing a display panel, comprising: Providing a substrate; Forming a shading layer and a driving circuit layer on the surface of the substrate base plate, wherein the driving circuit layer covers the shading layer; the light guide device comprises a substrate, a first light guide layer, a second light guide layer, a first light guide layer and a second light guide layer, wherein the first light guide layer comprises a first light dispersing part and a first light collecting part, and orthographic projection of the first light dispersing part on the light shielding layer covers the light shielding layer; Preparing a second light guide layer below the first light guide layer, wherein the second light guide layer comprises a second light dispersing part and a second light collecting part, and orthographic projection of the second light dispersing part on the light shielding layer covers the light shielding layer; preparing a light emitting layer below the second light guide layer, wherein the light emitting side of the light emitting layer faces the second light guide layer; The manufacturing method further comprises the following steps: The step of preparing a first light guide layer below the substrate base plate comprises the following steps: preparing a concave lens and a convex lens below the substrate, and arranging the concave lens and the convex lens according to a preset mode; the concave lens is used as the first light dispersing part, and the convex lens is used as the first light collecting part; the step of preparing a second light guiding layer below the first light guiding layer comprises the following steps: Preparing right-angle triangular prisms and equilateral triangular prisms with different heights below the first light guide layer, and arranging the right-angle triangular prisms and the equilateral triangular prisms according to a preset mode; the right-angle triangular prism is used as the second light dispersing part, and the equilateral triangular prism is used as the second light collecting part; Or preparing a first equilateral triangular prism and a second equilateral triangular prism with equal heights below the first light guide layer, and coating diffuse reflection materials on the bottom of the first equilateral triangular prism; the first equilateral triangular prism coated with the diffuse reflection material is used as the second light dispersing part, and the second equilateral triangular prism is used as the second light collecting part.

Description

Display panel and manufacturing method thereof Technical Field The present application relates to the field of display technologies, and in particular, to a display panel and a method for manufacturing the display panel. Background With the continuous development of Display technologies, requirements of people on resolution, power consumption and image quality of Display products are higher and higher, and LTPS (Low Temperature Poly-Silicon, low-temperature polysilicon) is widely applied to various preparation processes of Display panels with high image quality requirements (for example, preparation processes of HUD (Head-up Display) and VR (Virtual Reality technology) Display panels by virtue of the advantages of high resolution, high reaction speed, high brightness and the like. The LTPS has a certain photosensitivity, and when it is in a high brightness environment, it is easy to generate leakage current due to carrier energy jump caused by light energy, thereby affecting a display effect. However, in order to secure the electrostatic protection capability of the display panel, the thickness of the light shielding layer is generally set to be thin, and in addition, in order to secure the display brightness of the display panel, the brightness of the backlight is generally set to be high, so that the backlight can penetrate the light shielding layer and irradiate to LTPS, resulting in generation of leakage current, so that the display effect of the display panel is poor. Disclosure of Invention The application provides a display panel and a manufacturing method of the display panel, which are used for relieving the technical problem that the display effect of the current display panel is poor. In order to solve the technical problems, the application provides the following technical scheme: the present application provides a display panel, comprising: A substrate base; The shading layer is arranged on the surface of the substrate; the driving circuit layer is arranged on the surface of the substrate base plate and covers the shading layer; The first light guide layer comprises a first light dispersing part and a first light collecting part, and the orthographic projection of the first light dispersing part on the shading layer covers the shading layer; the second light guide layer comprises a second light dispersing part and a second light collecting part, and the orthographic projection of the second light dispersing part on the shading layer covers the shading layer; the light emitting layer is arranged below the second light guide layer, and the light emitting side of the light emitting layer faces the second light guide layer. In some embodiments of the present application, the first light dispersing part includes a concave lens; The refractive power of the convex lens is weaker than that of the concave lens. In some embodiments of the application, the second light dispersing part comprises a right-angle prism, and the second light collecting part comprises an equilateral prism; The right-angle triangular prism is different from the equilateral triangular prism in height. In some embodiments of the present application, the second light dispersing part includes a first equilateral prism, and a bottom of the first equilateral prism is coated with a diffuse reflection material; The second light ray gathering part comprises a second equilateral triangular prism; The first equilateral triangular prism and the second equilateral triangular prism are equal in height. In some embodiments of the present application, the driving circuit layer includes: the light shielding layer is positioned in the buffer layer; The front projection of the shading layer on the polycrystalline silicon layer covers the polycrystalline silicon layer; The insulating layer is arranged on the surface of the buffer layer and covers the polysilicon layer; and the grid layer is arranged on the surface of the insulating layer. In some embodiments of the present application, the buffer layer includes a first buffer layer and a second buffer layer that are sequentially stacked; the first buffer layer is attached to the surface of the substrate base plate; The second buffer layer is arranged between the first buffer layer and the insulating layer. The application also provides a manufacturing method of the display panel, which comprises the following steps: Providing a substrate; Forming a shading layer and a driving circuit layer on the surface of the substrate base plate, wherein the driving circuit layer covers the shading layer; the light guide device comprises a substrate, a first light guide layer, a second light guide layer, a first light guide layer and a second light guide layer, wherein the first light guide layer comprises a first light dispersing part and a first light collecting part, and orthographic projection of the first light dispersing part on the light shielding layer covers the light shielding layer; Preparing a second