Patent ID: 11868012
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A transparent display panel, comprising:
a first substrate;
a second substrate;
a liquid crystal layer located between the first substrate and the second substrate;
a light guide plate located on a side of the first substrate away from the second substrate, wherein the light guide plate has a light incident surface on an outer peripheral side of the light guide plate;
a light source assembly configured to emit a light beam toward the light incident surface of the light guide plate; and
a plurality of pixel units on the transparent display panel, wherein the plurality of pixel units comprises a first pixel unit and a second pixel unit,
wherein a distance from a center of an orthographic projection of the first pixel unit on a light exit surface of the light guide plate to the light incident surface of the light guide plate is less than a distance from a center of an orthographic projection of the second pixel unit on the light exit surface of the light guide plate to the light incident surface of the light guide plate;
wherein an area of an orthographic projection of an effective modulation area of the liquid crystal layer in the first pixel unit on the light exit surface of the light guide plate is less than an area of an orthographic projection of an effective modulation area of the liquid crystal layer in the second pixel unit on the light exit surface of the light guide plate;
wherein the first pixel unit comprises a first transparent electrode and a second transparent electrode for modulating the liquid crystal layer, the second pixel unit comprises a third transparent electrode and a fourth transparent electrode for modulating the liquid crystal layer, the effective modulation area of the liquid crystal layer in the first pixel unit is an overlapping area of an orthographic projection of the first transparent electrode on the light exit surface of the light guide plate and an orthographic projection of the second transparent electrode on the light exit surface of the light guide plate, and the effective modulation area of the liquid crystal layer in the second pixel unit is an overlapping area of an orthographic projection of the third transparent electrode on the light exit surface of the light guide plate and an orthographic projection of the fourth transparent electrode on the light exit surface of the light guide plate;
wherein the first transparent electrode and the third transparent electrode are located on a side of the liquid crystal layer facing the light exit surface of the light guide plate, the second transparent electrode and the fourth transparent electrode are located on a side of the liquid crystal layer facing the second substrate, and an area of an orthographic projection of at least one of the first transparent electrode and the second transparent electrode on the light exit surface of the light guide plate is less than an area of an orthographic projection of at least one of the third transparent electrode and the fourth transparent electrode on the light exit surface of the light guide plate; and
wherein the first pixel unit further comprises a dummy electrode, and the dummy electrode is not electrically connected to the first transparent electrode and the second transparent electrode, and the orthographic projection of the first transparent electrode or the second transparent electrode on the light exit surface of the light guide plate has a hollow area, and an orthographic projection of the dummy electrode on the light exit surface of the light guide plate is located in the hollow area.