Display panel suitable for under-screen camera

Abstract

The invention discloses a display panel suitable for an under-screen camera. The display panel comprises a driving back plate, an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode. The display panel is divided into a display area a and a display area b; the cathode of the display area a is a high-transmittance cathode, the light emitting layer is a quantum dot light emitting layer, and an under-screen camera is arranged below the display area a; the cathode of the display area b is a low-transmittance cathode, and the light-emitting layer is an OLED organic light-emitting layer. According to the novel appropriate display device structure of an under-screen camera and a display panel design, high-color-purity display performance and high transparency of the camera area can be achieved at the same time and a true full screen with excellent performance is realized.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a display panel suitable for an under-display camera. Background technique [0002] Due to the broad intrinsic spectrum of OLED, the spectrum has shoulder peaks, the spectrum cannot be narrowed, and the color purity is not good. Therefore, AMOLED mobile phones and wearable products now adopt the top-emitting AMOLED device structure, that is, the light of the organic light-emitting layer is emitted from the cathode side, and the cathode has a certain degree of impermeability, thereby forming an optical microcavity between the electrodes, and the light in the microcavity The medium vibration is coupled to narrow the spectrum to meet the daily needs of high color purity consumer products ( figure 1 , figure 2 ). [0003] In specific design and production, increasing the thickness of the cathode can obtain a narrowed and enhanced spectrum. In this way, there is a di...

AI Technical Summary

Problems solved by technology

In this way, there is a dilemma in the requirements for the cathode in actual production: if the cathode is too thin and the microcavity effect is too weak, it will show a relatively wide spectrum inherent to OLED, and the spectrum has shoulder peaks, and the spectrum cannot be narrowed. If the cathode is too thick, the transmittance of the AMOLED screen will be affected ( image 3 )

Since different areas of the OLED display screen have different requirements for screen transmittance, the color purity brought about by the thickness of the OLED cathode conflicts with the transmittance requirements, and the camera effect is poor, requiring a lot of image processing corrections ( Figure 5 )

Images