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CN-121985682-A - Display panel and display device

CN121985682ACN 121985682 ACN121985682 ACN 121985682ACN-121985682-A

Abstract

The invention relates to the technical field of micro display, and discloses a display panel and a display device, wherein the display panel comprises light-emitting units which are arranged in an array, and the light-emitting units comprise light-emitting areas with different colors and pixel definition structures arranged between adjacent light-emitting areas; the light-emitting device comprises a substrate, a pixel defining structure, a first anti-reflection layer, a lens layer and a second anti-reflection layer, wherein the pixel defining structure is arranged on one side, far away from the substrate, of the substrate, the lens layer is arranged on one side, far away from the substrate, of the light-emitting unit, the lens layer comprises micro-lens structures which are in one-to-one correspondence with the light-emitting areas, and the second anti-reflection layer is arranged between any two adjacent micro-lens structures. According to the invention, the multistage anti-reflection paths which work cooperatively are formed among the first anti-reflection layer, the second anti-reflection layer and the third anti-reflection layer, so that the ambient stray light incident from different angles can be absorbed and reduced layer by layer.

Inventors

  • HU QINGJING
  • LUO XIANG
  • ZHU PING

Assignees

  • 安徽熙泰智能科技有限公司

Dates

Publication Date
20260505
Application Date
20260127

Claims (10)

  1. 1. A display panel, comprising The light-emitting units are arranged in an array and comprise light-emitting areas with different colors and pixel definition structures arranged between the adjacent light-emitting areas; the first anti-reflection layer is arranged on one side of the pixel definition structure, which is far away from the substrate; the lens layer is arranged on one side, far away from the substrate, of the light-emitting unit, and comprises micro lens structures which are in one-to-one correspondence with the light-emitting areas; and the second anti-reflection layer is arranged between any two adjacent micro lens structures.
  2. 2. The display panel of claim 1, further comprising a color filter disposed between the light emitting region and the lens layer, and a third anti-reflective layer disposed on an upper surface of an intersection of adjacent color filters.
  3. 3. A display panel according to claim 1 or 2, wherein the first, second and third anti-reflection layers at least partially overlap in a direction perpendicular to the substrate.
  4. 4. A display panel according to claim 1 or2, wherein the materials of the first, second and third anti-reflection layers comprise optically absorbing or optically interfering materials.
  5. 5. A display panel according to claim 4, wherein, The optical absorption material comprises any one of carbon black resin composite material, ferrous metal nitride and graphite; The optical interference type material comprises any one of tantalum pentoxide and silicon dioxide.
  6. 6. A display panel according to claim 4, wherein, The materials of the first anti-reflection layer, the second anti-reflection layer and the third anti-reflection layer are the same; Or, the material of the first anti-reflection layer is different from the material of the second anti-reflection layer and the third anti-reflection layer; Or, the material of the second anti-reflection layer is different from the material of the first anti-reflection layer and the third anti-reflection layer; or, the material of the third anti-reflection layer is different from the material of the first anti-reflection layer and the second anti-reflection layer.
  7. 7. A display panel according to claim 4, wherein the optical absorption material has a light absorption rate of more than 90% in the visible light range.
  8. 8. A display panel according to claim 4, wherein the thickness d and refractive index n of the optical interference material satisfy the following relationship: Wherein, the As a function of the wavelength(s), For the refractive index of the film layer in contact over the optical interference material, Is the refractive index of the film layer contacting under the optical interference type material.
  9. 9. A display panel according to claim 1, wherein, The semiconductor device further comprises an encapsulation layer and a planarization layer; The packaging layer is arranged between the light-emitting unit and the color filter film; the planarization layer is arranged between the packaging layer and the color filter film, and/or the planarization layer is arranged between the color filter film and the lens layer.
  10. 10. A display device comprising the display panel of any one of claims 1-9.

Description

Display panel and display device Technical Field The invention belongs to the technical field of micro display, and particularly relates to a display panel and a display device, in particular to a silicon-based OLED display panel with an optical anti-reflection structure and a display device. Background With the rapid development of near-to-eye display devices such as Augmented Reality (AR) and Virtual Reality (VR), very high performance requirements are being put forward on Micro display panels, especially silicon-based organic light emitting diode (Micro OLED) Micro displays, as core imaging elements. The display needs to have high brightness, high contrast and high resolution, and excellent anti-reflection capability under the conditions of strong external ambient stray light (AR) or stray light (VR) reflected back by an internal optical machine, so as to avoid the external stray light from forming 'ghosts' or virtual images in an optical system and seriously affecting user experience. The conventional solution is to attach additional anti-reflection glass on the outer side of the display panel or to use an optical film such as a polarizer and a quarter wave plate in combination. Such external application schemes can significantly increase the overall thickness and volume of the module. Another solution reduces reflection by optimizing the optical parameters of the film material, with limited suppression of multiple reflections and wide angle incidence stray light caused by the multi-layer complex structure. Therefore, how to suppress the reflection of the ambient light inside the multi-layer film structure caused by the pixel definition layer region, the metal electrode, the lens interface, and the like without significantly increasing the thickness of the device and the complexity of the process has become a technical problem to be solved in the art. Disclosure of Invention The invention aims to provide a display panel and a display device, which solve the problems that the prior silicon-based OLED micro-display is easy to form a virtual image in an AR/VR optical system due to insufficient anti-ambient stray light capability and the volume of equipment is increased due to the fact that an anti-reflection element is externally attached, and realize the effects of thinning the micro-display equipment and inhibiting the reflection of wide-angle incident stray light. The technical scheme adopted by the invention is as follows: according to a first aspect of an embodiment of the present invention, there is provided a display panel including: the light-emitting units are arranged in an array and comprise light-emitting areas with different colors and pixel definition structures arranged between the adjacent light-emitting areas; the first anti-reflection layer is arranged on one side of the pixel definition structure, which is far away from the substrate; the lens layer is arranged on one side, far away from the substrate, of the light-emitting unit, and comprises micro lens structures which are in one-to-one correspondence with the light-emitting areas; and the second anti-reflection layer is arranged between any two adjacent micro lens structures. In some embodiments, the display panel further includes a color filter film disposed between the light emitting region and the lens layer, and a third anti-reflection layer disposed on an upper surface of an intersection of adjacent color filter films. In some embodiments, the first, second, and third anti-reflective layers at least partially overlap in a direction perpendicular to the substrate. In some embodiments, the materials of the first, second, and third anti-reflective layers comprise optically absorptive materials or optically interferometric materials. Optionally, the optical absorption material includes any one of carbon black resin composite material, ferrous metal nitride and graphite; The optical interference type material comprises any one of tantalum pentoxide and silicon dioxide. In some embodiments, the materials of the first, second, and third anti-reflective layers are all the same; Or, the material of the first anti-reflection layer is different from the material of the second anti-reflection layer and the third anti-reflection layer; Or, the material of the second anti-reflection layer is different from the material of the first anti-reflection layer and the third anti-reflection layer; or, the material of the third anti-reflection layer is different from the material of the first anti-reflection layer and the second anti-reflection layer. In some embodiments, the optical absorption material has a light absorption rate of greater than 90% in the visible light band. In some embodiments, the thickness d and refractive index n of the optical interference material satisfy the following relationship: Wherein, the As a function of the wavelength(s),For the refractive index of the film layer in contact over the optical interference material,Is th