Composite cover plate and display device

A display device, comprising:

• a composite cover plate, comprising:
• a plastic substrate, having a haze ranging from 10% to 30% and a thickness ranging from 50 μm to 250 μm;
• a decorative layer, attached to a surface of the plastic substrate, the decorative layer having a thickness ranging from 16 μm to 24 μm and an optical density ranging from 1.5 to 2.5, wherein a peripheral area of the composite cover plate is defined by a vertical projection of the decorative layer;
• a supporting layer comprising a first layer comprising poly carbonate (PC) and a second layer comprising polymethyl methacrylate (PMMA), the first layer having an upper layer surface and the second layer having a lower layer surface, wherein the upper layer surface is adhered to the plastic substrate and the decorative layer;
• and
• a shielding layer, attached to the lower layer surface and having an optical density in a range from 5.0 to 6.2,
• wherein the composite cover plate further has a viewable area connected to the peripheral area, and
• wherein the shielding layer is in contact with a sidewall of the first layer and a sidewall of the second layer;
• a front light guide module, disposed on one side of the supporting layer away from the plastic substrate;
• and
• a display module, disposed on one side of the front light guide module away from the composite cover plate,
• when the front light guide module is turned on, luminance of the viewable area of the display device measured via the plastic substrate is within a range from 100 nits to 140 nits.

A composite cover plate, having a viewable area and a peripheral area located on at least one side of the viewable area and comprising:

• a plastic substrate, having a haze in a range from 10% to 30% and a thickness ranging from 50 μm to 250 μm;
• a decorative layer, attached to a surface of the plastic substrate, the decorative layer having a thickness ranging from 16 μm to 24 μm and an optical density ranging from 1.5 to 2.5, wherein the peripheral area of the composite cover plate is defined by a vertical projection of the decorative layer;
• a supporting layer comprising a first layer comprising poly carbonate (PC) and a second layer comprising polymethyl methacrylate (PMMA), the first layer having an upper layer surface and the second layer having a lower layer surface, wherein the upper layer surface is adhered to the plastic substrate and the decorative layer;
• and
• a shielding layer, attached to the lower layer surface, the shielding layer having an optical density ranging from 5.0 to 6.2,
• wherein an L* of CIELAB color space of the peripheral area of the composite cover plate measured via the plastic substrate is within a range from 90 to 96, and
• wherein the shielding layer is in contact with a sidewall of the plastic substrate.